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Air quality impact of carbon monoxide emission from diesel engine electric power generators

environmental Quality Management 2019年第3期28卷 97-102页

作者： Fakinle, Bamidele Sunday Okedere, Oyetunji Babatunde Adebanjo, Sunday Adekunle Adesanmi, Adewole Johnson Sonibare, Jacob Ademola Department of Chemical Engineering Landmark University Omu-Aran Nigeria College of Science Engineering and Technology Osun State University Osogbo Nigeria Department of Chemical and Polymer Engineering Faculty of Engineering Lagos State University Epe Nigeria Environmental Research Laboratory Department of Chemical Engineering Obafemi Awolowo University Ile-Ife Nigeria

An emissions inventory and the AERMOD View dispersion model were used to estimate the concentrations and the potential effects of carbon monoxide (CO) from diesel engine electric power generators operated by and providing electricity to a textile factory in Nigeria on its host air shed. The CO emissions from simultaneous operations of all of the electric power generators in the factory resulted in: 1-hr average CO emissions of 4.2 to 54.5 micrograms per cubic meters (μg/m³) and 24-hr average CO emissions of 0.3 to 20.9 μg/m³. The estimated 1-hr averaging period maximum ground-level concentrations of CO were deposited within the factory, while the 24-hr maximum ground-level concentrations are estimated at a distance 90 meters (m) from the factory in a southeast direction. The ground-level concentrations of CO emanating from the textile factory are within the stipulated ambient air quality standards. © 2019 Wiley Periodicals, Inc.

关键词： diesel emission inventory energy ground-level concentration textile industry

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Metallic cobalt mediated molybdenum nitride for efficient glycerol upgrading with water electrolysis

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Chinese Chemical Letters 2025年

作者： Yiming Guo Zhouhong Yu Bin He Pengzuo Chen School of Chemistry and Chemical Engineering Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018 China Huzhou Key Laboratory of Environmental Functional Materials and Pollution Control Department of Materials Chemistry Huzhou University Huzhou 313000 China

Integrating electrochemical upgrading of glycerol and water electrolysis is regarded as a promising and energy-saving approach for the co-production of chemicals and hydrogen. However, developing efficient electrocatalyst towards this technology remains challenging. Herein, a metallic cobalt mediated molybdenum nitride heterostructural material has been exploited on nickel foam (Co@Mo₂N/NF) for the glycerol oxidation reaction (GOR) and hydrogen evolution reaction (HER). Remarkably, the obtained Co@Mo₂N/NF realizes eminent performance with low overpotential of 49 mV at 50 mA/cm2 for HER and high Faradaic efficiency of formate of 95.03% at 1.35 V vs. RHE for GOR, respectively. The systematic in-situ experiments reveal that the Co@Mo₂N heterostructure promotes the cleavage of C-C bond in glycerol by active CoOOH species and boosts the conversion of glycerol to aldehyde intermediates to formate product. Moreover, the density functional theory (DFT) calculations confirm the strong interaction at Co@Mo₂N interface, which contributes to the optimized water dissociation and the transformation of H* to H2. Benefiting from those advantages, the built HER||GOR electrolyzer delivers a low voltage of 1.61 V at 50 mA/cm2, high Faradaic efficiency, and robust stability over 120 h for sustained and stable electrolysis.

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Effects of sodium alginate-poly(acrylic acid) cross-linked hydrogel beads on soil conditioner in the absence and presence of phosphate and carbonate ions

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Case Studies in Chemical and environmental engineering 2024年 9卷

作者： Hidayat, Endar Sarbani, Nur Maisarah Mohamad Lahiri, Sudip Kumar Samitsu, Sadaki Yonemura, Seiichiro Mitoma, Yoshiharu Harada, Hiroyuki Graduate School of Comprehensive Scientific Research Program in Biological System Sciences Prefectural University of Hiroshima Shobara 727-0023 Japan Department of Life System Science Faculty of Bioresources Science Prefectural University of Hiroshima Shobara 727-0023 Japan Data-driven Polymer Design Group Research Center for Macromolecules and Biomaterials National Institute for Materials Science 1−2−1 Sengen Tsukuba 305-0047 Japan Department of Mechanical & Industrial Engineering University of Toronto Toronto M5S 3G8 ON Canada Faculty of Allied Health Sciences Chettinad Hospital and Research Institute Chettinad Academy of Research and Education Tamil Nadu Kelambakkam 603103 India

Hydrogel beads, composed of polymers, possess the ability to absorb substantial quantities of water simultaneously and gradually release it in dry conditions. In this work, hydrogel beads were synthesized using sodium alginate (S-Alg) and poly (acrylic acid) (P-Acc), either in the absence or presence of phosphate (PO₄ ³⁻) (S-Alg/P-Acc@PO₄ ³⁻) and carbonate (CO₃ ²⁻) anionic ions (S-Alg/P-Acc@CO₃ ²⁻). Subsequently, these beads were crosslinked with Ca²⁺ ions. The scanning electron microscopy (SEM) images demonstrated that the presence of anionic ions has an impact on the structure of the hydrogel beads and enhances porosity expansion while concurrently reducing the concentration of carboxyl (COOH) groups. The hydrogel beads exhibited a great swelling behavior, with S-Alg/P-Acc@CO₃ ²⁻ capable of absorbing up to 73.5 % of water in acidic conditions, but decreased under neutral and basic conditions. Soil water loss (SWL) experiments confirmed the ability of hydrogel beads to retain water in the soil. Additionally, observations of soil characteristics after a 14-day treatment revealed no significant difference in pH and C/N ratio (P-value <0.05). However, soil's available Fe and N–NO₃ ^- significantly reduced (P-value <0.05) while substantially promoting soil N–NH₄ ⁺, available phosphorus (P), cation exchange capacity (CEC), soil organic carbon (SOC), and exchangeable cation (Ca²⁺, K⁺ and Mg²⁺). The presence of hydroxyl (-OH) and –COOH groups was found to be crucial for enhancing soil properties. © 2024 The Authors

关键词： Anionic ions Hydrogel beads Poly (acrylic acid) Sodium alginate Soil characteristics Soil water retention Swelling

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High efficiency (Eqe>30%) tadf-oled with lightly-doped emitter (0.5%) by using tadf-host 57th

High efficiency (Eqe>30%) tadf-oled with lightly-doped emitt...

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57th SID International Symposium, Seminar and Exhibition, Display Week, 2020

作者： Ding, Wen-Cheng Huang, Jau-Jiun Chen, Chia-Hsun Chiu, Tien-Lung Lin, Chi-Feng Leung, Man-Kit Lee, Jiun-Haw Graduate Institute of Photonics and Optoelectronics Department of Electrical Engineering National Taiwan University Taipei10617 Taiwan Department of Chemistry Institute of Polymer Science and Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Rd. Taipei10617 Taiwan Department of Electrical Engineering Program C Yuan Ze University No.135 Yuandong Rd. Zhongli Dist. Taoyuan City320 Taiwan Department of Electro-Optical Engineering National United University No.2 Lienda Nanshi Li Miaoli City Miaoli County36063 Taiwan

High efficiency (EQE=30.15%) organic light emitting diode (OLED) was demonstrated by lightly doping the thermally activated delayed fluorescence (TADF) emitter (0.5%) into the TADF host, resulting from: (1) efficient energy transfer from host to dopant, (2) long exciton diffusion length in host, and (3) rare concentration quenching due to lightly-doped condition. © 2020 SID.

关键词： Organic light emitting diodes (OLED)

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Harnessing porous carbon/iron oxide nanocomposites for arsenic contaminated water remediation and asymmetric supercapacitor

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Materials Today Chemistry 2025年 47卷

作者： Sourav Acharya Shrabani De Duy Thanh Tran Nam Hoon Kim Brijesh K. Mishra G.C. Nayak Joong Hee Lee Department of Chemistry and Chemical Biology Indian Institute of Technology (ISM) Dhanbad 826004 Jharkhand India Department of Nano Convergence Engineering Jeonbuk National University Jeonju-si Jeollabuk-do 54896 Republic of Korea Department of Environmental Science and Engineering Indian Institute of Technology (ISM) Dhanbad 826004 Jharkhand India Center for Carbon Composite Materials Department of Polymer Nano Science and Technology Jeonbuk National University Jeonju-si Jeollabuk-do 54896 Republic of Korea

This study presents a sustainable, dual-purpose approach that addresses arsenic remediation and cheap energy storage together. Porous carbon derived from walnut shells was synthesized via two-step carbonization, then composited with α-Fe 2 O 3 through hydrothermal treatment to form an efficient As(V) adsorbent. The C/α-Fe 2 O 3 hybrid achieved a maximum removal efficiency of 390 mg g −1 at a temperature of 45 °C with 90 % Arsenic removal within the first 40 min. To immobilize the adsorbed arsenic, the spent adsorbent was heat-treated under an inert atmosphere, leading to the formation of stable FeAs and FeAsO 4 phases, alongside γ-Fe 2 O 3 . The resulting C/Fe–As–O composite as cathode and porous carbon as anode, delivered a specific capacitance of 228 F g −1 and energy density of 81.1 Wh kg −1 at a power density of 800 W kg −1 at 0.5 A g −1 and can maintain C sp of 59 at ED of 21.1 at PD of 8000 at 5 A g −1 . The fabricated device retained nearly 100 % capacitance after 10,000 cycles and successfully powered LEDs in a practical demonstration. This work highlights a scalable and environmentally responsible pathway to convert toxic waste into value-added electrode materials, aligning with circular economy principles and advancing the field of multifunctional energy materials.

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Effect of polyvinylidene fluoride concentration in PVDF-TiO₂-PVP composite membranes properties and its performance in bovine serum albumin rejection

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Case Studies in Chemical and environmental engineering 2024年 9卷

作者： Gayatri, Rianyza Fizal, Ahmad Noor Syimir Yuliwati, Erna Zailani, Muhamad Zulhilmi Jaafar, Juhana Hossain, Md Sohrab Zulkifli, Muzafar Taweepreda, Wirach Ahmad Yahaya, Ahmad Naim Polymer Science Program Division of Physical Science Faculty of Science Prince of Songkla University Hat-Yai Songkhla 90110 Thailand Universiti Kuala Lumpur Malaysian Institute of Chemical and Bioengineering Technology Alor Gajah Melaka 78000 Malaysia Centre for Sustainability of Ecosystem & Earth Resources (Pusat ALAM) Universiti Malaysia Pahang Lebuh Persiaran Tun Khalil Yaakob Pahang Gambang 26300 Malaysia Program Study of Chemical Engineering Faculty of Engineering Universitas Muhammadiyah Palembang Jalan A.Yani 13 Ulu Kota Palembang 30263 Indonesia Advanced Membrane Technology Research Centre (AMTEC) Faculty of Chemical and Energy Engineering Universiti Teknologi Malaysia Johor Skudai 81310 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 Iskandar 32610 Malaysia Green Chemistry and Sustainability Cluster Universiti Kuala Lumpur Branch Campus Malaysian Institute of Chemical and BioEngineering Technology Alor Gajah Melaka 78000 Malaysia

In the present study, the polyvinylidene fluoride (PVDF) was incorporated with polyvinylpyrrolidone (PVP) and titanium dioxide (TiO2) nanoparticles to prepare PVDF-TiO2-PVP composite membrane for Bovine Serum Albumin ... 详细信息

In the present study, the polyvinylidene fluoride (PVDF) was incorporated with polyvinylpyrrolidone (PVP) and titanium dioxide (TiO₂) nanoparticles to prepare PVDF-TiO₂-PVP composite membrane for Bovine Serum Albumin (BSA) rejection from protein contaminated wastewater. The preparation of PVDF-TiO₂-PVP composite membrane was conducted by a non-solvent phase inversion (NIPS) process with varying PVDF weight percentages ranging from 16 to 19 wt%. The polymer concentration plays a critical role in the formation of composite membranes that is commonly overlooked. The primary goal of this study is to examine how the concentration of polymers affects the process of membrane creation, the ensuing structure, and the properties of these membranes. Presently, there is a restricted comprehension concerning the impact of PVDF polymer concentration in the fabrication of membranes using the NIPS approach, particularly for PVDF-TiO₂-PVP composite membranes. FE-SEM analysis revealed the lowest skin layer thickness and the number of macro-void formations in a PVDF composite membrane were at 16 wt% PVDF, compared to composite membranes over higher PVDF concentrations from 17 to 19 wt%. There were only slight variations in the percentages of individual elements across all PVDF-TiO₂-PVP membranes, yet the values were identical for C, O, F, and Ti. The viscosity was lowest at 16 wt percent PVDF (576.5 MPa s) and greatest at 19 wt percent PVDF (2054.3 MPa s). It showed that 19%wt PVDF viscosity increased fourfold higher than 16%wt. As the concentration of PVDF was increased, a related decrease in the surface porosity of the membrane was observed. The highest hydrophobicity with the contact angle of 79.62° of the composite membranes were detected at 19 wt% of PVDF loading. The maximum water flux (265.43 L/m²h) and BSA flux (250.31 L/m²h) were obtained at 19 wt% of PVDF loading. The lowest PVDF concentration of 16

关键词： Bovine serum albumin rejection Composite membrane Flat sheet Membrane separation polymeric composite

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Stabilizing Zinc Anodes with Sodium Lignosulfonate-Doped Polypyrrole

SSRN

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SSRN 2024年

作者： Ni, Yaqi Liu, Qifan Xue, Tao Zang, Limin Qiu, Jianhui Yu, Xiuwen Zhang, Jiali Yang, Chao MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials Guangxi Key Laboratory of Optical and Electronic Materials and Devices Guangxi Colleges Universities Key Laboratory of Natural and Biomedical Polymer Materials Guilin University of Technology Guilin541004 China Guangxi Colleges Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization School of Materials and Environment Guangxi Minzu University Nanning530105 China Department of Machine Intelligence and Systems Engineering Faculty of Systems Science and Technology Akita Prefectural University Yurihonjo015-0055 Japan

Despite zinc-based electrochemical energy storage being considered a safe and efficient energy storage system, problems such as uncontrolled dendrite growth, hydrogen precipitation reactions, and corrosion have seriously hindered its commercialization. Mitigating dendrite growth and other associated issues is crucial for the successful commercialization of these systems. Herein, we propose a sodium lignosulfonate-doped polypyrrole protective layer for zinc anodes with good hydrophilicity, electrical conductivity, and a porous structure, which can effectively inhibit the growth of zinc dendrites and the side reactions. The doping of sodium lignosulfonate introduces numerous zincophilic groups. The sulfonic acid groups enhance zinc ion interaction and regulate flux, while phenolic hydroxyl groups increase zincophilic sites, aiding in the uniform deposition of zinc. As expected, the Zn||Zn symmetric cell with this protective layer provides high cycling stability of more than 1960 hours at 0.5 mAh cm-2, 0.25 mA cm-2. This study presents a feasible approach for realizing stable zinc anodes. © 2024, The Authors. All rights reserved.

关键词： Polypyrroles

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A Universal Strategy for Constructing Anti-Bioadhesion and Robust Coating for Wood

SSRN

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SSRN 2022年

作者： Shen, Xiaofei Han, Shenjie Xiang, Zhongrun Lu, Yutong Qian, Hao Tang, Longxiang Wang, Huiqing Lu, Yun Department of Polymer Science and Engineering School of Chemistry and Chemical Engineering Hefei University of Technology Anhui Province Hefei230009 China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng224051 China Beijing Gas Group Co. Ltd. Fourth Branch No. 5 Hongda North Road Economic-Technological Development Area Beijing100176 China Research Institute of Wood Industry Chinese Academy of Forestry Xiangshan Road Haidian District Beijing100091 China

Nowadays, with the increased concern for healthy living, wood, as the most widely used material for interiors, has an increasing demand for surface antibioadhesion. To achieve antibioadhesion, the surface energy of the material must be reduced and the micro/nanostructure roughness increased. Superhydrophobic surfaces are compatible with solutions for sticking phenomena. Inspired by lotus leaves, poly(pentafluorophenyl isocyanide) (PFPI)-grafted wood (Wood-g-PFPI10) with micro/nanostructured roughness and low surface energy was developed by grafting PFPI on the wood surface via thiol-ene click chemistry. The chemical structure, morphology, and water contact angle of Wood-g-PFPI10 were characterized by FTIR, solid-state 13C NMR, SEM, XPS and contact angle measurements. Wood-g-PFPI10 exhibits excellent hydrophobicity (162°), antibacterial adhesion (S. aureus and E. coli), antifriction, self-cleaning, oil-water separation, and biocompatibility, resulted from increased surface roughness due to the rigid helical structure of grafted PFPI. More importantly, this facile and efficient surface modification method is durable and suitable for all cellulosic substrates (eg, cotton fiber), and regardless of the size and space constraints of the substrate, it is promising potential for antibioadhesion and other application of helical polymer. © 2022, The Authors. All rights reserved.

关键词： Morphology

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Alloy-like ternary polymer solar cells with over 17.2% efficiency

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science Bulletin 2020年第7期65卷 538-545,M0003页

作者： Qiaoshi An Jian Wang Wei Gao Xiaoling Ma Zhenghao Hu Jinhua Gao Chunyu Xu Minghui Hao Xiaoli Zhang Chuluo Yang Fujun Zhang School of Electrical Engineering Beijing Jiaotong UniversityBeijing 100044China College of Physics and Electronic Engineering Taishan UniversityTaian 271021China Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Hubei Key Laboratory on Organic and Polymeric Optoelectronic Materials Department of ChemistryWuhan UniversityWuhan 400072China State Centre for International Cooperation on Designer Low-Carbon&Environmental Materials School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China School of Science Beijing Jiaotong UniversityBeijing 100044China

Ternary strategy has been considered as an efficient method to achieve high performance polymer solar cells(PSCs). A power conversion efficiency(PCE) of 17.22% is achieved in the optimized ternary PSCs with10 wt% MF1 in acceptors. The over 8% PCE improvement by employing ternary strategy is attributed to the simultaneously increased JSCof 25.68 mA cm^-2, VOCof 0.853 V and FF of 78.61% compared with Y6 based binary PSCs. The good compatibility of MF1 and Y6 can be confirmed from Raman mapping, contact angle,cyclic voltammetry and morphology, which is the prerequisite to form alloy-like state. Electron mobility in ternary active layers strongly depends on MF1 content in acceptors due to the different lowest unoccupied molecular orbital(LUMO) levels of Y6 and MF1, which can well explain the wave-like varied FF of ternary PSCs. The third-party certified PCE of 16.8% should be one of the highest values for single bulk heterojunction PSCs. This work provides sufficient references for selecting materials to achieve efficient ternary PSCs.

关键词： polymer solar cells Ternary strategy Nonfullerene acceptor Alloy-like model

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Ultrastrong and Heat-Resistant Poly(ether ether ketone) Separator for Dendrite-Proof and Heat-Resistant Lithium-Ion Batteries

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ACS APPLIED ENERGY MATERIALS 2019年第5期2卷 3886-3895页

作者： Liu, Junchen Mo, Yudi Wang, Shuanjin Ren, Shan Han, Dongmei Xiao, Min Sun, Luyi Meng, Yuezhong The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province State Key Laboratory of Optoelectronic Materials Technologies School of Materials Science and Engineering Sun Yat-sen University Guangzhou 510275 P. R. China Polymer Program Institute of Materials Science and Department of Chemical & Biomolecular Engineering University of Connecticut Storrs Connecticut 06269 United States

Separators are a pivotal component of lithium-ion batteries (LIBs) due to their vital role in maintaining a good ionic flow and preventing internal short circuit. The separators with superior thermal stability, ultrahigh mechanical strength, and excellent electrolyte wettability are essential for ensuring the safety and energy density of LIBs. Herein, an ultrastrong poly(ether ether ketone) (PEEK) separator is fabricated via thermally induced phase separation using a binary diluent for the first time, which maintains the intrinsic outstanding properties of a PEEK resin. Computational simulation and experimental verification are performed to optimize fabrication conditions. The as-prepared PEEK separator with high porosity (70.3%) shows a tortuous and three-dimensional porous structure;furthermore, the abundant polar groups on PEEK endow the separator with excellent electrolyte wettability (contact angle of 19 degrees and electrolyte uptake of 387%). Notably, the PEEK separator exhibits excellent thermal stability (almost no shrinkage at 300 degrees C), flame resistance, and ultrastrong mechanical strength (tensile strength of 124 MPa, Young's modulus of 7.84 GPa, and puncture strength of 10.5 MPa), which can avoid short circuit and greatly guarantee the safety of LIBs. In particular, the PEEK separator presents excellent interfacial compatibility and both a higher ionic conductivity (1.57 mS cm(-1)) and lithium-ion transference number (0.55). Significantly, the PEEK-based LiFePO4/Li cell displays a very stable cycle performance and better rate capability. In addition, the PEEK-based lithium-sulfur cell also shows better battery performance than a commercial polyethylene-based cell. Consequently, the specially fabricated PEEK separator is a promising separator candidate for enhanced safety and electrical performance of lithium-ion and lithium-sulfur batteries.

关键词： separator poly(ether ether ketone) thermally induced phase separation lithium-ion batteries lithium-sulfur batteries

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