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The unseen invaders: Tracking phylogeographic dynamics and genetic diversity of cryptic Pomacea canaliculata and P. maculata (Golden apple snails) across Taiwan

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Ecology and Evolution 2024年第4期14卷 e11268页

作者： Banerjee, Pritam Dey, Gobinda Maity, Jyoti Prakash Stewart, Kathryn A. Sharma, Raju Kumar Chan, Michael W. Y. Lee, Kuanhsuen Chen, Chien-Yen Department of Environmental Science Policy and Management University of California Berkeley CA United States Department of Biomedical Sciences Graduate Institute of Molecular Biology National Chung Cheng University Chiayi County Min-Hsiung Taiwan Department of Agricultural Chemistry National Taiwan University Taipei Taiwan Environmental Science Laboratory Department of Chemistry Biological Laboratory School of Applied Sciences KIIT Deemed to be University Odisha Bhubaneswar India Institute of Environmental Sciences Leiden University Leiden Netherlands Doctoral Program in Science Technology Environment and Mathematics Department of Earth and Environmental Sciences National Chung Cheng University Chiayi County Min-Hsiung Taiwan Department of Earth and Environmental Sciences National Chung Cheng University Chiayi County Min-Hsiung Taiwan Department of Emergency Medicine Ditmanson Medical Foundation Chia-Yi Christian Hospital Chiayi Taiwan Center for Nano Bio-Detection Center for Innovative Research on Aging Society AIM-HI National Chung Cheng University Chiayi Taiwan

The cryptic invasion of golden apple snails (Pomacea canaliculata and P. maculata) in Taiwan has caused significant ecological and economical damage over the last few decades, however, their management remains difficult due to inadequate taxonomic identification, complex phylogeny, and limited population genetic information. We aim to understand the current distribution, putative population of origin, genetic diversity, and potential path of cryptic invasion of Pomacea canaliculata and P. maculata across Taiwan to aid in improved mitigation approaches. The present investigation conducted a nationwide survey with 254 samples collected from 41 locations in 14 counties or cities across Taiwan. We identified P. canaliculata and P. maculata based on mitochondrial COI and compared their genetic diversity across Taiwan, as well as other introduced and native countries (based on publicly available COI data) to understand the possible paths of invasion to Taiwan. Based on mitochondrial COI barcoding, sympatric and heterogeneous distributions of invasive P. canaliculata and P. maculata were noted. Our haplotype analysis and mismatch distribution results suggested multiple introductions of P. canaliculata in Taiwan was likely originated directly from Argentina, whereas P. maculata was probably introduced from a single, or a few, introduction event(s) from Argentina and Brazil. Our population genetic data further demonstrated a higher haplotype and genetic diversity for P. canaliculata and P. maculata in Taiwan compared to other introduced regions. Based on our current understanding, the establishment of P. canaliculata and P. maculata is alarming and widespread beyond geopolitical borders, requiring a concerted and expedited national and international invasive species mitigation program. © 2024 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.

关键词： agricultural pest biological invasion DNA barcoding golden apple snails mitochondrial COI Pomacea population genetics

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Highly Efficient Bimetallic Cu-Modified Ni Phyllosilicate Catalysts for Liquid-Phase Selective Hydrogenation of Furfural to Furfuryl Alcohol

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SSRN 2024年

作者： Weerachawanasak, Patcharaporn Shoosri, Tanyarat Chotiwilaiwan, Pisacha Rattanapornchaiwat, Tanisorn Kata, Naruemon Sooknoi, Tawan Teerawatananond, Thapong Miyake, Takanori Panpranot, Joongjai Department of Chemistry School of Science King Mongkut’s Institute of Technology Ladkrabang Bangkok10520 Thailand Catalytic Chemistry Research Unit School of Science King Mongkut’s Institute of Technology Ladkrabang Bangkok10520 Thailand College of Innovation and Industrial Management King Mongkut’s Institute of Technology Ladkrabang Bangkok10520 Thailand Advanced Pure and Applied Chemistry Research Unit School of Science King Mongkut’s Institute of Technology Ladkrabang Bangkok10520 Thailand Graduate School of Science and Engineering Environmental and Urban Major Kansai University 3-3-35 Yamate Osaka Suita564-8680 Japan Center of Excellence on Catalysis and Catalytic Reaction Engineering Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand

The monometallic 20%NiPS and bimetallic Cu-NiPS catalysts with different Ni/Cu ratios (Ni:Cu (wt.%) = 5:15, 10:10, 15:5) were synthesized by ammonia evaporation hydrothermal method for liquid phase selective hydrogenation of furfural (FF) to furfuryl alcohol (FA). According to the results, the bimetallic Cu-NiPS catalysts formed two types of Ni-Cu alloys: a) nickel-rich Ni-Cu alloy and b) copper-rich Ni-Cu alloy. The bimetallic Cu-NiPS showed high dispersion of Ni-Cu alloy in different particle sizes (3.8-4.8 nm) and exhibited higher catalytic performances than monometallic 20%NiPS. The 15%Cu-5%NiPS catalyst showed the best catalytic performance with the highest FF conversion (88%) and the highest FA selectivity (90%) due to the copper-rich Ni-Cu alloy formation with high dispersion and the synergetic effect between Ni and Cu facilitated the easy H2 dissociation and desorption of FA. Therefore, the highest FF conversion with high FA selectivity was obtained. © 2024, The Authors. All rights reserved.

关键词： Nickel compounds

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Modified β-cyclodextrin microspheres towards the application in intumescent fire resistance and smoke-suppressing of bio-based poly(L-lactic acid)

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International Journal of Biological Macromolecules 2023年第1期234卷 123666页

作者： Zhang, Xiaolei Yang, Yubin Li, Meitong Wu, Jingxuan Zhu, Zhe Bi, Chengliang Xie, Yuhong Wang, Taoyun Sun, Yongyan Yin, Jing Xie, Zhanghua Liu, Fude Wang, Junsheng Yang, Jinjun Tianjin Key Laboratory of Hazardous Waste Safety Disposal and Recycling Technology School of Environmental Science and Safety Engineering Tianjin University of Technology 391 Binshui Xidao Xiqing District Tianjin300384 China School of Chemistry and Life Sciences Suzhou University of Science and Technology Suzhou China Tianjin Nengpu Science and Technology Co. Ltd Huading New Area 1-2-10 Haitai Inovation 6 Road Huayuan Industrial Park Tianjin300384 China Tianjin Fire Research Institute of the Ministry of Emergency Management Tianjin300381 China Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka565-0871 Japan

In this work, the β-cyclodextrin (β-CD) was modified by a phosphazene compound to prepare a novel amorphous derivate (β-CDCP), which was combined with the ammonium polyphosphate (APP) as a synergistic flame retardant (FR) of the bio-based poly(L-lactic acid) (PLA). The effects of the APP/β-CDCP on the thermal stability, combustion behavior, pyrolysis process, fire resistance performance and crystallizability of the PLA were investigated comprehensively and in depth by thermogravimetric (TG) analysis, limited oxygen index (LOI) analysis, UL-94 test, cone calorimetry measurement, TG-infrared (TG-IR), scanning electron microscopy-energy dispersive spectrometer, Raman spectroscopy, pyrolysis-gas chromatography/mass spectrometry and differential scanning calorimetry. The PLA/5%APP/10%β-CDCP showed a highest LOI of 33.2 %, passed V-0 rating and exhibited self-extinguish phenomenon in the UL-94 test. Also, it presented a lowest peak of heat release rate, total heat release, peak of smoke production rate and total smoke release, and a highest char yield treated by cone calorimetry analysis. In addition, the 5%APP/10%β-CDCP shortened significantly crystallization time and enhanced crystallization rate of the PLA. Gas phase and intumescent condensed phase fire proofing mechanisms are proposed to elucidate enhanced fire resistance in this system in detail. © 2023

关键词： Cyclodextrins

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Characterization of halotolerant phosphate-solubilizing rhizospheric bacteria from mangrove (Avicennia sp.) with biotechnological potential in agriculture and pollution mitigation

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Biocatalysis and Agricultural Biotechnology 2024年 55卷

作者： Dey, Gobinda Maity, Jyoti Prakash Banerjee, Pritam Sharma, Raju Kumar Etesami, Hassan Bastia, Tapan Kumar Rath, Prasanta Sukul, Uttara Huang, Hsien-Bin Huang, Kuo-Wei Chen, Chien-Yen Department of Agricultural Chemistry National Taiwan University Taipei 106319 Taiwan Department of Biomedical Sciences Graduate Institute of Molecular Biology National Chung Cheng University 168 University Road Chiayi County Ming-Shung 62102 Taiwan Doctoral Program in Science Technology Environment and Mathematics Department of Earth and Environmental Sciences National Chung Cheng University 168 University Rd. Chiayi County Min-Hsiung 62102 Taiwan Environmental Science Laboratory Department of Chemistry Biological Laboratory School of Applied Sciences KIIT Deemed to Be University Odisha Bhubaneswar 751024 India Department of Environmental Science Policy and Management University of California Berkeley CA United States Department of Chemistry and Biochemistry National Chung Cheng University 168 University Road Chiayi County Min-Hsiung 62102 Taiwan Department of Soil Science University of Tehran Tehran 31587-77871 Iran Environmental Science Laboratory Department of Chemistry School of Applied Sciences KIIT Deemed to Be University Odisha Bhubaneswar 751024 India Department of Otolaryngology Ditmanson Medical Foundation Chia-Yi Christian Hospital Taiwan Center for Nano Bio-Detection Center for Innovative Research on Aging Society AIM-HI National Chung Cheng University Chiayi 62102 Taiwan

Mangroves represent intricate and ever-changing ecosystems, exhibiting fluctuations in water level, salinity, and nutrient (such as NPK) availability as well as a wide array of unique bacterial communities. Microbial interactions in different components (e.g., tree roots) of the mangrove ecosystem are crucial to understand the ecosystem functioning for potential application in pollution mitigation and agricultural production. This study aimed to isolate phosphate-solubilizing bacteria (PSB) from the rhizosphere sediment of mangrove (Avicennia sp.) in terms of heavy metals (HMs) and salinity tolerance as well as plant growth promoting (PGP) traits, where the effective PSB were used on Brassica chinensis for their seed priming and growth under salinity stress. The effective two PSB isolates were identified by 16S rRNA, where JKD01 and JKD02 were closely related (99%) to Enterobacter cloacae (OQ271412) and Kocuria rhizophila (OQ271413), respectively. Both the strains exhibited phosphate solubilization, IAA, NH_3, and EPS production ability as well as HMs resistant ability where, E. cloacae (OQ271412) and K. rhizophila (OQ271413), are effectively remove the Cu from the water with 33.23% and 27.54%, respectively. The FTIR results showed functional group shifts (carboxyl, phosphate, and amino) in Cu-treated bacterial biomass and intracellular Cu presence, indicating the involvement of Cu in the bio-sorption and intracellular bioaccumulation process, respectively. The findings suggested PSB tolerance to salinity and HMs are present in mangroves, making them a valuable source for isolating effective bacteria to reduce stress in plants, lower HMs accumulation in mangroves, and aid in the bioremediation of HMs-contaminated environments. © 2023

关键词： Bio-priming Copper remediation Heavy metal tolerant Mangrove Phosphate-solubilizing bacteria Salt tolerant

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Adsorption of single and mixed haloacetonitriles on silica-based porous materials: Mechanisms and effects of porous structures

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Journal of environmental sciences 2019年第5期31卷 346-360页

作者： Panida Prarat Chawalit Ngamcharussrivichai Sutha Khaodhiar Patiparn Punyapalakul International Postgraduate Programs in Hazardous Substance and Environmental Management Graduate School Chulalongkorn University Center of Excellence on Hazardous Substance Management (HSM) Chulalongkorn University Department of Chemical Technology Faculty of Science Chulalongkorn University The Center of Excellence on Petrochemical and Materials Technology (PETROMAT) Chulalongkorn University Department of Environmental Engineering Faculty of Engineering Chulalongkorn University Research unit Control of Emerging Micropollutants in Environment Chulalongkorn University Research Network of NANOTEC - CU on Environment

Adsorption mechanisms and the role of different porous and crystalline structures on the removal of five haloacetonitriles(HANs) over hexagonal mesoporous silica(HMS), titanium substituted mesoporous silica(Ti-HMS), rod-shaped SBA-15 and microporous zeolite Na Y were investigated. In addition, the effect of p H on adsorption mechanism and selective adsorption of five HANs individually and in an equimolar mixed solution were *** results indicated that the intraparticle diffusion rate constants of the mesoporous adsorbents were higher than that of the microporous Na Y. In single solute, the order of adsorption preference(highest to lowest) was mono-HANs > di-HANs > tri-HAN. However,in mixed solute, the large molecular weight of the tri-HAN and di-HANs are more easily adsorbed than the smaller molecular weight mono-HANs. Except for SBA-15, the order of adsorption capacities in mixed HANs solute was not different compared to that observed for the single HAN solute, which might be caused by the higher accessibility to the active sites due to larger pore size. The ion-dipole electrostatic interaction was likely to be the main adsorption mechanism, and was favored at high p H values due to the high negative surface charge density of the adsorbent. The molecular structure of the HANs and hydrophilic/hydrophobic nature affected the adsorption capacities and their selective adsorption from mixed solutes.

关键词： Haloacetonitrile Adsorption mechanism Porous structure Ion-dipole electrostatic interaction Hydrophilicity

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A high-performance ZIF-8 membrane for gas separation applications: Synthesis and characterization

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environmental Technology and Innovation 2023年 31卷

作者： Nguyen, Truc-Mai T. Chen, Jein-Wen Pham, Minh-Thuan Bui, Ha Manh Hu, Chien-Chieh You, Sheng-Jie Wang, Ya-Fen Department of Environmental Engineering Chung Yuan Christian University Chung Li Taoyuan32023 Taiwan Center for Environmental Risk Management Chung Yuan Christian University Chung Li Taoyuan32023 Taiwan Department of Civil Engineering Chung Yuan Christian University Chung Li Taoyuan32023 Taiwan Center for Environmental Toxin and Emerging-Contaminant Research Cheng Shiu University Kaohsiung83347 Taiwan Institute of Environmental Toxin and Emerging-Contaminant Cheng Shiu University Kaohsiung833301 Taiwan Faculty of Environment Saigon University 273 An Duong Vuong Street District 5 Ho Chi Minh City70000 Viet Nam Graduate Institute of Applied Science and Technology Advanced Membrane Materials Research Center National Taiwan University of Science and Technology Daan Taipei City10607 Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Chung Li Taoyuan City32023 Taiwan

The demand for green energy sources is increasing rapidly, such as hydrogen, which is mainly produced through regeneration, filtration, and separation from exhaust gas sources. Inspired by the biological adhesion ability of the marine mussel, the H2 separation performance of ZIF-8 membranes was investigated, which were synthesized on polydopamine-functionalized stainless-steel-nets (SSNs). With the polydopamine (PDA) functionalization, the membrane achieves high separation efficiency while maintaining high membrane permeability, as the PDA layer promotes nucleation and continuous development of the ZIF-8 layer based on covalent bond treatment. First, the performances of the membranes prepared on PDA-functionalized SSNs and those prepared without functionalization were compared. For the single gas permeation test, the PDA functionalized ZIF-8 membrane separation abilities of CO2/N2, H2/N2, and H2/CO2 were found to be 1.25, 4.30, and 3.44, respectively. The separation factors of the ZIF-8 membrane without PDA for CO2/N2, H2/N2, and H2/CO2 were found to be 1.25, 4.06, and 3.16. Then, the effect on the separation ability of ZIF-8 solution concentration was conducted. The best efficiency for H2/CO2 was 11.3, respectively, for 0.2 M of the material solution under optimum conditions. Besides, the commercial ZIF-8 particles were used to prepare the membrane with the same method for comparison with the self-synthesized ZIF-8 particles. The performance of both membranes showed similar efficiency, and self-synthesized ZIF-8 particles showed economic and simplicity. The morphological structure and morphological face of the membrane were analyzed using various characterizations. The ZIF-8 membrane for gas separation is expected to apply to air purification and renewable energy sources in the near future. © 2023 The Author(s)

关键词： Carbon dioxide

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Applications of covalent organic frameworks for the elimination of dyes from wastewater: A state-of-the-arts review

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Chemosphere 2023年 343卷 140223页

作者： Zango, Zakariyya Uba Binzowaimil, Ayed M. Aldaghri, Osamah A. Eisa, Mohamed Hassan Garba, Abdurrahman Ahmed, Naser M. Lim, Jun Wei Ng, Hui-Suan Daud, Hanita Jumbri, Khairulazhar Khoo, Kuan Shiong Ibnaouf, Khalid Hassan Department of Chemistry College of Natural and Applied Science Al-Qalam University Katsina Katsina 2137 Nigeria Institute of Semi-Arid Zone Studies Al-Qalam University Katsina Katsina 2137 Nigeria Riyadh13318 Saudi Arabia School of Physics Universiti Sains Malaysia Penang 11800 Malaysia HICoE-Centre for Biofuel and Biochemical Research Institute of Self-Sustainable Building Department of Fundamental and Applied Sciences Universiti Teknologi PETRONAS Perak Darul Ridzuan Seri Iskandar32610 Malaysia Department of Biotechnology Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai602105 India Centre for Research and Graduate Studies University of Cyberjaya Persiaran Bestari Selangor Cyberjaya63000 Malaysia Mathematical and Statistical Science Department of Fundamental and Applied Sciences Institute of Autonomous System Universiti Teknologi PETRONAS Perak Darul Ridzuan Seri Iskandar32610 Malaysia Institute of Contaminant Management Universiti Teknologi PETRONAS Perak Darul Ridzuan Seri Iskandar32610 Malaysia Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan Taiwan Centre for Herbal Pharmacology and Environmental Sustainability Chettinad Hospital and Research Institute Chettinad Academy of Research and Education Kelambakkam Tamil Nadu 603103 India

Covalent organic frameworks (COFs) are class of porous coordination polymers made up of organic building blocks joined together by covalent bonding through thermodynamic and controlled reversible polymerization reactions. This review discussed versatile applications of COFs for remediation of wastewater containing dyes, emphasizing the advantages of both pristine and modified materials in adsorption, membrane separation, and advanced oxidations processes. The excellent performance of COFs towards adsorption and membrane filtration has been centered to their higher crystallinity and porosity, exhibiting exceptionally high surface area, pore size and pore volumes. Thus, they provide more active sites for trapping the dye molecules. On one hand, the photocatalytic performance of the COFs was attributed to their semiconducting properties, and when coupled with other functional semiconducting materials, they achieve good mechanical and thermal stabilities, positive light response, and narrow band gap, a typical characteristic of excellent photocatalysts. As such, COFs and their composites have demonstrated excellent potentialities for the elimination of the dyes. © 2023 Elsevier Ltd

关键词： Adsorption

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Promotion of the Catalytic Polymerization of Hydroquinone Towards Humic-Like Substances by Graphitic Carbon Nitride

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SSRN 2023年

作者： Ahmed, Mahmoud M.M. Liu, Yu-Ting Venkatesan, Srinivasadesikan Wu, Min Chien Nail, Howida M. Tzou, Der-Lii M. Lin, Ming-Chang Chen, Kai-Yue Tzou, Yu-Min Department of Soil and Environmental Sciences National Chung Hsing University 145 Xingda Rd. Taichung40227 Taiwan Innovation and Development Center of Sustainable Agriculture National Chung Hsing University 145 Xingda Rd. Taichung40227 Taiwan Department of Chemistry School of Science and Humanities Vignan's Foundation for Science Technology and Research Guntur Andhra Pradesh Vadlamudi522 213 India Graduate institute of Biomedical Engineering National Chung Hsing University 145 Xingda Rd. Taichung40227 Taiwan Institute of Chemistry Academia Sinica Nangang Taipei11529 Taiwan Department of Applied Chemistry National Yang Ming Chiao Tung University Hsinchu30010 Taiwan Professional Bachelor Program of Farm Management National Chiayi University Chiayi600355 Taiwan

The utilization of graphitic carbon nitride (C3N4) to enhance the oxidative polymerization of hydroquinone (HQ) within birnessite (δ-MnO2) systems was investigated. C3N4, a Lewis base enriched with nitrogen, acted as a bridge through π−π interactions between metal oxides and polyphenols. These interactions increased the affinity of the reactants, resulting in an enhanced reaction rate of six-fold, accelerated browning, and improved complex stability of C3N4...HQ...MnO2 complex. As a result, a humic-like substance (HS) was rapidly formed with improved surface morphology and larger particle sizes. Electron transfer of HQ...MnO2 promoted by C3N4 played a crucial role in HQ oxidation, expanding atomic distance and composite morphology. Theoretical calculations supported the experimental results, indicating strong affinity and higher binding energies in the C3N4...HQ...MnO2 complex. The complex had a more stable structure with a narrower HOMO-LUMO gap, facilitating HS formation. 13C and 1H NMR spectra confirmed the experimental-theoretical agreement. © 2023, The Authors. All rights reserved.

关键词： Binding energy

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Assessing The Monetary Value Of Ecosystem Services Provided By Gaung – Batang Tuaka Peat Hydrological Unit (Khg), Riau Province

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Heliyon 2021年第10期7卷 e08208页

作者： Rossita, Annuri Nurrochmat, Dodik Ridho Boer, Rizaldi Hein, Lars Riqqi, Akhmad Applied Climatology Study Program The Graduate School Of Ipb University Bogor Indonesia Center For Climate Risk And Opportunity Management In South East Asia And Pacific (Ccrom-Seap) Ipb University Bogor Indonesia Department Of Forest Management Faculty Of Forestry And Environment Ipb University Bogor 16680 Indonesia Environmental Science Analysis Group Wageningen University and Research Wageningen Netherlands Faculty of Earth Science and Technology Bandung Institute of Technology (ITB) Indonesia

Peatland Plays A Pivotal Role In Providing Natural Resource Production And environmental Services For Human Welfare. However, Many Studies Have Mentioned The Impact Of Dryland Cultivation In Peatland On The Shifting Carbon Balance In The Ecosystem That Clearly Will Alter The Interaction Of These Two Ecosystem Services. The Goal Of This Study, Conducted Under The Framework Of The System Of environmental-Economic Accounting (Seea) Was To Monetary Value The Ecosystem Services (Es) Of Provisioning And Carbon Regulating Services Of The Gaung-Batang Tuaka Peat Hydrological Unit (Khg). We Focused On Khg In Response To Regulation No.57/2016, Which Highlights Ecosystem Boundary As A New Basis For Peatland management. Under The Seea Framework, Ecosystem Services Become A Benefit When Utilized By Ecosystem Beneficiaries. In This Case, Provisioning Services Will Be Valued Only For Cultivated Land, While Carbon Services Calculated For The Entire Study Area (Global Beneficiaries). Our Study Showed That The Provisioning Services And Carbon Services Are Under The Trade-Off Condition, Where The Monetary Value Of Provisioning Services Increased At A Slower Rate (0.50 Million Usd Annually) Than The Monetary Loss Of The Benefit Of Carbon Services (5.28 Million Usd Annually), Greatly Exceeded The Monetary Value Of Provisioning Services. We Highlight Two Main Strategies To Increase The Monetary Value Of The Khg Towards A Synergy Condition, Namely Increased Value-Added By Reducing The Productivity Gap Among Es Beneficiaries And Large-Scale Adoption Of A Profitable Cultivation System With Minimum Peat Disturbance. The Main Enablers Required Include Financing Access And Incentives (E.G., Reduce Tax) And Disincentives To Allow For Peat-Adaptive Commodities To Compete With Dryland Commodities In The Future Market © 2021 The Authors. Published by Elsevier Ltd

关键词： Ecosystem Services Monetary Value Peat Hydrological Unit Peatland management Riau

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Thermally chargeable supercapacitor modules with heat transporting systems for powering wireless sensors by natural heat dissipation

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Chemical Engineering Journal 2025年 516卷

作者： Shohei Horike Teruo Ebihara Ryoko Nakae Masakazu Mukaida Yasuko Koshiba Masahiro Funahashi Qingshuo Wei Department of Chemical Science and Engineering Graduate School of Engineering Kobe University 1-1 Rokkodai-cho Kobe 657-8501 Japan Research Center for Membrane and Film Technology Kobe University 1-1 Rokkodai-cho Kobe 657-8501 Japan Center for Environmental Management Kobe University 1-1 Rokkodai-cho Kobe 657-8501 Japan Research Institute of Core Technology for Materials Innovation Department of Materials and Chemistry National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan Graduate School of Pure and Applied Science University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8577 Japan

Heat-to-electricity energy conversion is one of the most important sources for powering various wireless sensors in the future Internet of Things (IoT). In this study, we developed a new class of thermoelectric modules using redox-free electrolytes, namely thermally chargeable supercapacitors (TCS), with extensively large thermoelectromotive force of over 4 V without a DC-to-DC converter. The commercial wireless sensors are driven by the cold start owing to the large voltage output. Furthermore, we combined the TCS module with a heat-dissipation system which uses a heat pipe and sink. The heat pipe efficiently transfers heat to the part of the TCS module, while the heat sink dissipates the heat to the environment, enabling the supply of sufficient temperature difference to the TCS module by natural cooling. The large output voltage generated was further managed by the voltage detector integrated circuit to intermittently power the wireless sensors. The developed systems can use thermal energy even when the heat sources are spatially separated from the sensor units. We believe the proposed device and thermal engineering promote sustainable energy production by harvesting low-grade thermal energy and reducing energy consumption through IoT.

关键词： Thermally chargeable supercapacitor Heat pipe Voltage detector integrated circuit Energy harvesting Internet of Things

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