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Ultralong nitrogen/sulfur Co-doped carbon nano-hollowsphere chains with encapsulated cobalt nanoparticles for highly efficient oxygen electrocatalysis

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Carbon Energy 2023年第8期5卷 15-30页

作者： Wei Zhang Xingmei Guo Cong Li Jiang-Yan Xue Wan-Ying Xu Zheng Niu Hongwei Gu Carl Redshaw Jian-Ping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhouChina State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghaiChina College of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiangChina Department of Chemistry University of HullHullUK

The development of simple and effective strategies to prepare electrocatalysts,which possess unique and stable structures comprised of metal/nonmetallic atoms for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),is currently an urgent ***,an efficient bifunctional electrocatalyst featured by ultralong N,S-doped carbon nano-hollow-sphere chains about 1300 nm with encapsulated Co nanoparticles(Co-CNHSCs)is *** multifunctional catalytic properties of Co together with the heteroatom-induced charge redistribution(i.e.,modulating the electronic structure of the active site)result in superior catalytic activities toward OER and ORR in alkaline *** optimized catalyst Co-CNHSC-3 displays an outstanding electrocatalytic ability for ORR and OER,a high specific capacity of 1023.6 mAh gZn^(-1),and excellent reversibility after 80 h at 10mA cm^(-2)in a Zn-air battery *** work presents a new strategy for the design and synthesis of efficient multifunctional carbon-based catalysts for energy storage and conversion devices.

关键词： Co nanoparticles N S co-doping oxygen electrocatalysts rechargeable Zn-air batteries ultralong carbon nano-hollow-sphere chains

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Sandwich-Structured Solar Cells with Accelerated Conversion Efficiency by Self-Cooling and Self-Cleaning Design

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Journal of Bionic engineering 2024年第6期21卷 2955-2968页

作者： Huide Fu Ben Wang Rui He Yongpu Yang Hongyuan Li Zhiguang Guo College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen518060China State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Engineering ScienceBeijing Innovation Center for Engineering Science and Advanced TechnologyCollege of EngineeringPeking UniversityBeijing100871China Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei UniversityWuhan430062PR China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of ScienceLanzhou730000PR China

Photovoltaic(PV)power generation is highly regarded for its capability to transform solar energy into electrical ***,in real-world applications,PV modules are prone to issues such as increased self-heating and surface dust accumulation,which contribute to a reduction in photoelectric conversion ***,elevated temperatures can adversely affect the components’operational *** augment the efficiency and extend the lifespan of PV modules,it is crucial to implement cooling strategies and periodic surface dust *** this research,we introduce a composite PV module design that amalgamates a hygroscopic hydrogel with self-cleaning *** design incorporates a superhydrophobic polydimethylsiloxane(PDMS)film as its exposed surface layer and employs a PAM-CaCl2-SiC hygroscopic hydrogel for rear *** arrangement is intended to facilitate efficient surface self-cleaning and passive cooling of the composite PV *** studies were conducted to evaluate the performance of this innovative composite PV module design,and the results showed that the composite PV panel had an increase of about 1.39%in power generation compared to an ordinary PV panel in the spring of Shenzhen,China.

关键词： Self-cleaning Solar cell Superhydrophobic Hygroscopic hydrogel Conversion efficiency

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environmental standards and beneficial uses of waste-to-energy(WTE)residues in civil engineering applications

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Waste Disposal and Sustainable Energy 2023年第3期5卷 323-350页

作者： Yixi Tian Shengwei Dai Jianfeng Wang Department of Materials Science and Engineering Massachusetts Institute of Technology77 Massachusetts Avenue CambridgeCambridgeMA02139USA Department of Chemical Engineering Columbia UniversityNew YorkNY10027USA Department of Earth and Environmental Engineering Columbia UniversityNew YorkNY10027USA

The waste-to-energy(WTE)technologies are now recovering energy and materials from over 300 million tonnes of municipal solid wastes *** studies have investigated substituting natural construction materials with WTE residues to relieve the environmental cost of natural resource *** study examined the beneficial uses of WTE residues in civil engineering applications and the corresponding environmental standards in Europe,the U.S.,and *** review presents the opportunities and challenges for current technical approaches and the environmental standards to be met to stabilize WTE *** principal characteristics of WTE residues(bottom ash and fly ash)and the possible solutions for their beneficial use in developed and developing countries are *** leaching procedures and environmental standards for pH,heavy metals,and polychlorinated dibenzo-p-dioxins/furans(PCDD/Fs)are *** current practice and engineering properties of materials using WTE residues,including mixtures with stone aggregate or sand,cement-based or hot-mix asphalt concrete(pavement),fill material in the embankments,substitute of Portland cement or clinker production,and ceramic-based materials(bricks and lightweight aggregate)are comprehensively reviewed.

关键词： Waste-to-energy(WTE) Bottom ash Fly ash Construction building materials Civil engineering applications Leaching standards

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Rheological and stability analysis of cement pastes incorporating silica-based wastes

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Particuology 2024年第6期89卷 144-152页

作者： Julia da Rosa Martins Janaíde Cavalcante Rocha Dachamir Hotza Luciano Senff Graduate Program in Materials Science and Engineering(PPGMAT) Federal University of Santa Catarina(UFSC)Florianópolis88040-900SCBrazil Graduate Program in Civil Engineering(PPGEC) Federal University of Santa Catarina(UFSC)Florianópolis88040-900SCBrazil Graduate Program in Chemical Engineering(POSENQ) Federal University of Santa Catarina(UFSC)Florianópolis88040-900SCBrazil Department of Mobility Engineering Federal University of Santa Catarina(UFSC)Joinville89219-600SCBrazil

This study investigates the influence of waste characteristics,especially zeta potential,on the properties of cement pastes and *** focus is to evaluate the impact of the zeta potential of cement particles and waste materials on the sedimentation speed,rheology,and hardening time of stabilized cement *** Cement II F 40,retarder additive,silica,and fly ash were used in the *** pastes were prepared,and during the stabilization period,their rheological properties and pH were *** zeta potential and sedimentation speed of the cement and waste particles were measured at the pH that the pastes presented during the entire stabilization *** the stabilization period,the pastes were subjected to the hardening time *** zeta potential analyses revealed diverse values for the different powder types,with the cement particles exhibiting a zeta potential of−3.0 mV,the silica particles exhibiting−10.5 mV,and the fly ash particles exhibiting−20.3 *** influence of the high zeta potential modulus was observed on the sedimentation speed,with the solution containing fly ash exhibiting a speed of 40.01μm/s,whereas the solution containing only cement exhibited a speed of 99.38μm/*** the pastes,the results indicate that the presence of fly ash particles with a significantly negative zeta potential led to a 16%reduction in hardening time compared to particles with a lower modulus of zeta *** tests showed that the inclusion of fly ash particles prevented the formation of *** the zeta potential influenced agglomerate formation and hardening time,it was found to have no effect on yield stress or viscosity.

关键词： Wastes Zeta potential Setting time Rheometry

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Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

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Frontiers of chemical science and engineering 2022年第5期16卷 634-660页

作者： Yan Zhao Yangbo Qiu Natalie Mamrol Longfei Ren Xin Li Jiahui Shao Xing Yang Bart van der Bruggen Department of Chemical Engineering KU LeuvenB-3001 LeuvenBelgium School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Materials Science and Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA

Discharged hospital wastewater contains various pathogenic microorganisms,antibiotic groups,toxic organic compounds,radioactive elements,and ionic *** contaminants harm the environment and human health causing the spread of ***,effective treatment of hospital wastewater is an urgent task for sustainable ***,with controllable porous and nonporous structures,have been rapidly developed for molecular *** particular,membrane bioreactor(MBR)technology demonstrated high removal efficiency toward organic compounds and low waste sludge *** further enhance the separation efficiency and achieve material recovery from hospital waste streams,novel concepts of MBRs and their applications are rapidly evolved through hybridizing novel membranes(non hydrophilic ultrafiltration/microfiltration)into the MBR units(hybrid MBRs)or the MBR as a pretreatment step and integrating other membrane processes as subsequent secondary purification step(integrated MBR-membrane systems).However,there is a lack of reviews on the latest advancement in MBR technologies for hospital wastewater treatment,and analysis on its major challenges and future *** review started with an overview of main pollutants in common hospital wastewater,followed by an understanding on the key performance indicators/criteria in MBR membranes(i.e.,solute selectivity)and processes(e.g.,fouling).Then,an in-depth analysis was provided into the recent development of hybrid MBR and integrated MBR-membrane system concepts,and applications correlated with wastewater sources,with a particular focus on hospital *** is anticipated that this review will shed light on the knowledge gaps in the field,highlighting the potential contribution of hybrid MBRs and integrated MBRmembrane systems toward global epidemic prevention.

关键词： membrane technology membrane bioreactor hospital wastewater hybrid MBR integrated MBR-membrane system

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Flexible 2D Cu Metal:Organic Framework@MXene Film Electrode with Excellent Durability for Highly Selective Electrocatalytic NH_(3) Synthesis

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Research 2022年第3期2022卷 321-331页

作者： Jing Wang Tao Feng Jiaxin Chen Jr-Hau He Xiaosheng Fang Department of Materials Science Fudan UniversityShanghai 200433China School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China Department of Materials Science and Engineering City University of Hong KongTat Chee AvenueKowloonHong Kong

Electrocatalytic nitrate reduction to ammonia(ENRA)is an effective strategy to resolve environmental and energy crisis,but there are still great challenges to achieve high activity and stability synergistically for practical application in a fluid *** flexible film electrode may solve the abovementioned problem of practical catalytic application owing to the advantages of low cost,light weight,eco-friendliness,simple and scalable fabrication,extensive structural stability,and electrocatalytic ***,2D hybridization copper 1,4-benzenedi-carboxylate(CuBDC)has been grown on electronegative MXene nanosheets(Ti_(3)C_(2)T_(x))seamlessly to prepare a 2D flexible CuBDC@Ti_(3)C_(2)T_(x)electrode for *** flexible electrode simultaneously exhibits high Faradaic efficiency(86.5%)and excellent stability for NH_(3)synthesis,which are comparable to previously reported nanomaterials toward ***,the flexible electrode maintains outstanding FENH_(3)toward ENRA after the bending,twisting,folding,and crumpling tests,indicating excellent electroconductibility,high stability,and *** work not only provides mild permeation-mediated strategy to fabricate a flexible electrode but also explores the practical applications of the electrode with effectively environmental adaptability in solving global environmental contamination and energy crisis by effective ENRA.

关键词： electrode catalytic stability

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Towards sustainable H2 evolution by using an algal-electro-photosynthetic process: The mediator selection alternates the electron sources for Chlorella sorokiniana SU-1

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International Journal of Hydrogen Energy 2023年第46期48卷 17409-17419页

作者： Li, Shiue-Lin Liao, En-Ci Lin, Yu-Jun Lu, Yun-Ju Zhang, Yu-Sheng Tseng, Yen-Tzu Jiang, Yu-Jie Chiang, Tzu-Hao Gao, Zhi-Xiang Li, Pei-Xuan Chang, Jo-Shu Department of Environmental Science and Engineering Tunghai University Taichung40704 Taiwan Department of Chemical and Material Engineering Tunghai University Taichung40704 Taiwan Department of Chemical Engineering National Cheng Kung University Tainan701 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung40704 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Chung-Li32003 Taiwan

Chlorella sorokiniana SU-1 is employed on the graphite-felt anode of a two-chamber cell connecting potentiostat (+0.4 V vs Ag/AgCl) to study its photoelectrochemical characteristics. Among the mediators selected, the current significantly reached 1.5 mA and 4.0 mA, respectively, when 0.3 mM 2,6-dimethoxy-1,4-benzoquinone and 5.5 mM ferricyanide were spiked. To give significant hydrogen evolution, the applied direct-circuit voltage could be reduced from 2.0 to 1.3 V (producing 1.5 mL-H2 h−1) due to the assistance of the algae-attached anode and platinum-mesh cathode. The current was boosted by spiking 0.2 g L−1 glucose under light/dark conditions. When using ferricyanide as a mediator, the current oscillated under alternating light-on/off conditions, while for 2,6-dimethoxy-1,4-benzoquinone, the increase or decrease of the current was clearly responding to the light going on and off. The microscopic observation of the SU-1 cell attachment indicates successful development by offering adequate illumination and electrode surfaces. © 2023 Hydrogen Energy Publications LLC

关键词： Anodes

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Bending the Rule: Naphthobisthiadiazole-Based Terpolymers with Both High Solubility and Crystallinity for Organic Photovoltaics

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ACS Applied Polymer materials 2024年第5期6卷 2586-2593页

作者： Chou, Li-Hui Chen, Fengkun Nakano, Kyohei Yamanaka, Kodai Mikie, Tsubasa Saito, Masahiko Liu, Cheng-Liang Tajima, Keisuke Osaka, Itaru Department of Applied Chemistry Graduate School of Engineering Hiroshima University Hiroshima Higashi-Hiroshima739-8527 Japan Department of Chemical and Materials Engineering National Central University Taoyuan32001 Taiwan Saitama Wako351-0198 Japan Applied Chemistry Program Graduate School of Advanced Science and Engineering Hiroshima University Hiroshima Higashi-Hiroshima739-8527 Japan Department of Materials Science and Engineering National Taiwan University Taipei10617 Taiwan

Achieving a good balance between the crystallinity and solubility is of great importance in the design of π-conjugated polymers. Here, we synthesized a series of terpolymers in which small fractions of a planar V-shaped fused ring, triphenyleno[1,2-c:7,8-c′]bis([1,2,5]thiadiazole) (TPTz), are incorporated into the linear-shaped backbone of a highly crystalline polymer based on naphtho[1,2-c:5,6-c′]bis([1,2,5]thiadiazole) (NTz), PNTz4T. Due to the "bending" structure induced by the TPTz unit, the terpolymers had greatly improved solubility by about 5-9 times compared to the linear-shaped PNTz4T. In particular, the terpolymers preserved the crystallinity of PNTz4T to a considerable extent with a higher fraction of face-on oriented domains in films. As a result, the highly solution-processable terpolymers exhibited high photovoltaic performances and slightly outperformed PNTz4T. Our results indicate that the incorporation of a V-shaped unit into a linearly shaped polymer is a good strategy to develop π-conjugated polymers with high solubility and crystallinity. © 2024 American chemical Society.

关键词： Solubility

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The historical trend in temperature of a tropical river basin in Kerala, India

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International Journal of Water 2022年第1期15卷 39-52页

作者： Nikhil Raj, P.P. Azeez, P.A. Department of Chemical Engineering and Materials Science Amrita School of Engineering Amrita Vishwa Vidyapeetham India Department of Environmental Science and Management Bharathidasan University Tiruchirappalli620024 India

While the concern about climate change has been significant in academia for a long time, the first assessment of the IPCC (1990) and then the Kyoto protocol (1997) provided a substantial impetus to study climate change worldwide. Local climatic variations are manifestations of global climate changes jointly with local features. In this study, we examine the daily temperature data of the Bharathapuzha river basin for 1969–2005, collected from the India Meteorological department, Pune, for its historical trend. Mann-Kendall rank correlation statistics were used to investigate the basin’s variations in yearly, monthly and seasonal temperatures. It showed that there is a hike in the annual temperature. Significant hikes in monsoons (southwest and northeast) and winter temperatures were also observed. Although the pre-monsoon temperature showed a hike, it was not statistically significant. Copyright © 2022 Inderscience Enterprises Ltd.

关键词： Climate change

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A DFT study of two-dimensional P_2Si monolayer modified by single transition metal(Sc-Cu)atoms for efficient electrocatalytic CO_(2)reduction

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Chinese chemical Letters 2023年第5期34卷 580-586页

作者： Chaozheng He Houyong Yang Xi Fu Xiaoli Cheng Jiyuan Guo Ling Fu Institute of Environmental and Energy Catalysis Shaanxi Key Laboratory of Optoelectronic Functional Materials and DevicesSchool of Materials Science and Chemical EngineeringXi'an Technological UniversityXi'an 710021China College of Science Hunan University of Science and EngineeringYongzhou 425199China Department of Physics Jishou UniversityJishou 416000China School of Science Jiangsu University of Science and TechnologyZhenjiang 212003China College of Resources and Environmental Engineering Tianshui Normal UniversityTianshui 741001China

In the present work,a stable two-dimensional(2D)P_(2)Si monolayer was *** monolayer is semimetallic/metallic under the PBE/HSE06 functional and is mechanically *** stability of the P_(2)Si monolayer has been proved via cohesive energy,mechanical criteria,molecular dynamics simulation,and phonon dispersion respectively,and the monolayer possesses high carrier mobility which is three times that of Mo S_(2).On the other hand,the catalytic performance of the P_(2)Si monolayer modified with a single transition metals(M=Sc-Cu)atom for the electrochemical reduction of CO_(2)was investigated,and the monolayer can catalyze CO_(2)with three constraints:stable molecular dynamics,high migration potential of metal atoms,and suitable band gap for electrocatalyst after metal doping exhibiting excellent catalytic stabilization activity and CRR *** addition,the reduction product of V@P_(2)Si is HCOOH with an overpotential as low as 0.75 V,and the most suitable reaction path is^(*)CO_(2)→^(*)CHOO→O^(*)CHOH→^(*)+HCOOH with the final reduction product HCOOH *** a whole,the above results endow the P_(2)Si monolayer to be a good 2D material holding great promises for applications in nanoelectronics and CO_(2)reduction catalysts.

关键词： First-principles calculation Global optimization method CO_(2)electrochemical reduction reaction Single-atom catalysts Phosphorus silicon compound

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