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Noble and Non-Noble Metal Based Catalysts for Electrochemical Nitrate Reduction to Ammonia:Activity,Selectivity and Stability

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Electrochemical Energy Reviews 2024年第1期7卷 1384-1422页

作者： Israr Masood ul Hasan Nengneng Xu Yuyu Liu Muhammad Zubair Nawaz Haitao Feng Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Institute for Sustainable Energy College of SciencesShanghai UniversityShanghai 200444China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Laboratory of 2D Optoelectronics and Nanoelectronics(L2DON) Department of Materials Science and EngineeringSouthern University of Science TechnologyShenzhen 518055GuangdongChina Key Laboratory of Green and High-End Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008QinghaiChina

Excessive nitrate(NO_(3)^(-))contamination has emerged as a critical environmental issue owing to the widespread use of nitrogen-based fertilizers,fossil fuel combustion,and the discharge of industrial and domestic ***,electrochemical nitrate reduction(eNO_(3)R)to ammonia(NH3)has emerged as a promising alternative to the traditional Haber-Bosch ***,the industrial implementation ofeNO_(3)R is hindered by low catalytic activity,poor selectiv-ity,and limited stability owing to competing hydrogen evolution *** paper provides a comprehensive overview of recent advancements ineNO_(3)R,particularly evaluating the catalytic activity,selectivity,and stability of both noble and non-noble metal *** review elucidates innovative catalyst design strategies,state-of-the-art developments,and potential directions for future ***,the paper explores the fundamental mechanisms underlyingeNO_(3)R forNH_(3)production,including electrocatalyst development methodologies,electrolyte effects,in situ characterization techniques,theoretical modeling,and cell design ***,factors influencingNH_(3)selectivity and catalyst structural composition are thoroughly ***,this review provides comprehensive insights into optimizingeNO_(3)R processes for synthesizingNH_(3),which can promote further advancements in this field.

关键词： Nitrate reduction Electrocatalysis NH_(3)production Activity Selectivity Stability

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Edge atomic Fe sites decorated porous graphitic carbon as an efficient bifunctional oxygen catalyst for Zinc-air batteries

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Journal of Energy Chemistry 2023年第8期83卷 602-611,I0014页

作者： Ruihui Gan Yali Wang Xiangwu Zhang Yan Song Jingli Shi Chang Ma Tianjin Municipal Key Lab of Advanced Fiber and Energy Storage Technology Tiangong UniversityTianjin 300387China Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695-8301uNITED sTATES CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina

The development of advanced bifunctional oxygen electrocatalysts for oxygen reduction and evolution reactions(ORR and OER) is critical to the practical application of zinc-air batteries(ZABs). Herein, a silica-assisted method is reported to integrate numerous accessible edge Fe-Nx sites into porous graphitic carbon(named Fe-N-G) for achieving highly active and robust oxygen electrocatalysis. Silica facilitates the formation of edge Fe-Nx sites and dense graphitic domains in carbon by inhibiting iron *** purification process creates a well-developed mass transfer channel for Fe-N-G. Consequently,Fe-N-G delivers a half-wave potential of 0.859 V in ORR and an overpotential of 344 m V at10 m A cm^(-2)in OER. During long-term operation, the graphitic layers protect edge Fe-Nx sites from demetallation in ORR and synergize with Fe OOH species endowing Fe-N-G with enhanced OER *** functional theory calculations reveal that the edge Fe-Nx site is superior to the in-plane Fe-Nx site in terms of OH* dissociation in ORR and OOH* formation in OER. The constructed ZAB based on Fe-N-G cathode shows a higher peak power density of 133 m W cm^(-2)and more stable cycling performance than Pt/C + RuO2counterparts. This work provides a novel strategy to obtain high-efficiency bifunctional oxygen electrocatalysts through space mediation.

关键词： Bifunctionality EdgeFe-Nxsites Oxygen catalysis Graphitic domains Zinc-air batteries

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Growth of BiOBr/ZIF‑67 Nanocomposites on Carbon Fiber Cloth as Filter‑Membrane‑Shaped Photocatalyst for Degrading Pollutants in Flowing Wastewater

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Advanced Fiber Materials 2022年第6期4卷 1620-1631页

作者： Xiaolong Li Ting Liu Yan Zhang Jiafeng Cai Mengqiang He Maoquan Li Zhigang Chen Lisha Zhang Department of Interventional and Vascular Surgery Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai 200072China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China College of Materials Science and Engineering Donghua UniversityShanghai 201620China

BiOBr-based nanocomposite photocatalysts are used for removing the organic pollutants,but their poor adsorption/photocatalytic performances and the low potential for recycling limit their *** solve the issue,herein we report a large-area recyclable CFC/BiOBr/ZIF-67 filter-membrane-shaped photocatalyst prepared by in situ growth of BiOBr/ZIF-67 nanocomposites on carbon fiber cloth(CFC).Fabrication process is based on hydrothermal synthesis of BiOBr nanosheets(diameter 0.5–1μm)on carbon fiber cloth(as substrate material)and then a chemical bath route is used to grow ZIF-67 nanoparticles(diameter 300–600 nm)in situ on the surface of CFC/*** composite,CFC/BiOBr/ZIF-67,exhibits a high specific surface area(545.82 m^(2) g^(−1))and a wide photoabsorption,accompanied by an absorption edge(~620 nm).In dark condition,CFC/BiOBr/ZIF-67 adsorbs bisphenol A(BPA)and orange 7(AO7)within 60 min,respectively with 20.0% and 40.1% *** level of efficiencies are correspondingly 2.6 and 3.2 times more that of the bare CFC/BiOBr(7.6%for BPA and 12.4% for AO7).Under visible light irradiation,CFC/BiOBr/ZIF-67 can degrade 69.7% of BPA and 96.0% of AO7,in 120 min,which are,respectively,1.3 and 1.8 times higher than the absorption efficiency of bare CFC/BiOBr(53.2% for BPA,52.0% for AO7).When CFC/BiOBr/ZIF-67 is used as a filter membrane for photocatalytic removal of pollutants in flowing wastewater(AO7,rate:~1.5 L h^(−1)),92.2%of AO7 can be decomposed after 10 filtering *** study suggests CFC/BiOBr/ZIF-67 as a novel highly functional,recyclable and environmental friendly photo-driven membrane filter for purification and recovery of flowing surface waste waters.

关键词： Carbon fiber cloth BiOBr/ZIF-67 Adsorption Photocatalyst Flowing wastewater

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Manipulating dielectric property of polymer coatings toward highretention-rate lithium metal full batteries under harsh critical conditions

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Nano Research 2023年第7期16卷 9240-9249页

作者： Qi Kang Zechao Zhuang Yong Li Yinze Zuo Jian Wang Yijie Liu Chaoqun Shi Jie Chen Hongfei Li Pingkai Jiang Xingyi Huang Department of Polymer Science and Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgeingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Chemistry Tsinghua UniversityBeijing 100084China Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology University of BremenBremen 28359Germany Institute for Sustainable Energy/College of Sciences Shanghai UniversityShanghai 200444China Helmholtz Institute Ulm(HIU) Ulm D89081Germany School of Electrical Engineering Xi’an Jiaotong UniversityXi’an 710049China

Lithium(Li)metal batteries(LMBs)can potentially deliver much higher energy density but remain plagued by uncontrollable Li plating with dendrite growth,unstable interfaces,and highly abundant excess Li(>50 mAh·cm^(-2)).Herein,different from the artificial layer or three-dimensional(3D)matrix host constructions,various dielectric polymers are initially well-comprehensively investigated from experimental characterizations to theoretical simulation to evaluate their functions in modulating Li ion *** a proof of concept,a 3D interwoven high dielectric functional polymer(HDFP)nanofiber network with polar C-F dipole moments electrospun on copper(Cu)foil is designed,realizing uniform and controllable Li deposition capacity up to 5.0 mAh·cm^(-2),thereby enabling stable Li plating/stripping cycling over 1400 h at 1.0 mA·cm^(-2).More importantly,under the highcathode loading(~3.1 mAh·cm^(-2))and only 0.6×excess Li(N/P ratio of 1.6),the full cells retain capacity retention of 97.4%after 200 cycles at 3.36 mA·cm^(-2)and achieve high energy density(297.7 Wh·kg^(-1)at cell-level)under lean electrolyte conditions(15μL),much better than ever-reported *** work provides a new direction for designing high dielectric polymer coating toward high-retention-rate practical Li full batteries.

关键词： high dielectric functional polymer nanofiber Li metal full cell low N/P ratio high-retention capacity

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A Low-cost, Easy-to-Fabricate, and environmentally Friendly Composite Solid Electrolyte for Use in Lithium Metal Cells Paired with Lithium Iron Phosphate and Silicon

A Low-cost, Easy-to-Fabricate, and Environmentally Friendly ...

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Fiber Society 2022 Fall Meeting and Technical Conference: 80 Years of Excellence in Advancing Scientific Knowledge Pertaining to Fibers and Fiber Materials

作者： Orenstein, Raphael Dirican, Mahmut Cheng, Hui Chang, Liang Yan, Chaoyi Wang, Eric Zhiqi Zhang, Xiangwu Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science Wilson College of Textiles North Carolina State University RaleighNC United States

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Stretchable and Biodegradable Electrospun Pan/Pcl Blend Nanofiber Membrane for Highly Efficient Particulate Matter Filtration

SSRN

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SSRN 2023年

作者： Kang, Hong Suk Jo, Gyounglyul Kwon, Jinhyeong Department of Polymer Science and Engineering University of Massachusetts AmherstMA01003 United States 89 Yangdaegiro-gil Ipjang-myeon Seobuk-gu Chungcheongnam-do Cheonan31056 Korea Republic of Department of Polymer Science and Engineering & Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of

Particulate matter (PM) is an air pollutant that poses a significant threat to human health, and efficient air filters are crucial for reducing PM pollution. However, several existing filtration materials fail under vigorous motion, such as twisting or stretching by high-velocity airflows, because of their poor mechanical properties. This study designed and fabricated a highly stretchable and biodegradable PM filtration membrane using electrospun polyacrylonitrile (PAN)/polycaprolactone (PCL) blend nanofibers. The resulting PAN/PCL air filters exhibited 100-times-enhanced stretchability and high filtration efficiency for PM2.5 (99.95%) and PM10 (99.89%), with a simultaneous low-pressure drop (121 Pa, only © 2023, The Authors. All rights reserved.

关键词： Biodegradation

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Attenuation of Chlorinated Contamination in Three Different Depths of Aquifers at Remediation Site

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China Petroleum Processing & Petrochemical Technology 2023年第1期25卷 162-178页

作者： Sun Shaodong Li Weisi Huang Yongjun Jiang Qing Bai Yu Wang Kunhua Xue Jianliang Wang Bo Yan Dongdong Xu Conghai College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China Department of Polymer Science and Engineering University of Science and Technology of ChinaHefei 230026China Shandong Provincial Eco-environment Monitoring Center Jinan 250102China Linyi Junhe Environmental Protection Technology Co. LtdLinyi Shandong 276000 Unicom Digital Technology Co. Ltd. College of Energy Storage Technology Shandong University of Science and TechnologyQingdaoShandong 266590China Shandong Juncheng Environment Examination Co. LtdLinyi Shandong 276000China

The cleanup of carbon tetrachloride(CCl4)in groundwater is challenging due to its high volatility and tendency to form a dense nonaqueous liquid *** the engineering applications perspective,the pump-and-treat(PAT)technology has substantial advantages owing to its large-scale implementation ability to solve groundwater ***,few studies focused on the variation in chloride contaminants in remediation sites after the contaminated groundwater was pumped and ***,we monitored the changes in chlorinated contamination in groundwater from 12 aquifers at the field level for 6 *** that the natural attenuation of chlorinated contamination is inseparable from the action of microorganisms,the major environmental factors influencing biodegradation were also evaluated.A redundancy analysis(RDA)showed that inorganic salts(DS,DN,and DF)were the most important factor(>60%)affecting the concentration of chloride contaminants,including the negative correlation between DN and the degradation of contaminants in shallow *** deep aquifers,DS,DF,and pH explained most of the degradation of chloride *** bedrock layers,DCl was positively relevant to the chloride contaminants in wells PTJ2 and *** addition,EC and DS accounted for 73.2%and 92.4%of the contaminant’s variance in wells PTJ4 and PTJ8,***,the concentrations of the corresponding contaminations and physicochemical variation in three different depths of aquifers were compared;the shallower aquifers showed a higher *** in situ monitoring and analysis of contaminated groundwater in remediation sites under PAT will promote practical wastewater treatment technologies in engineering applications.

关键词： groundwater chloride contaminants pump-and-treat biodegradation engineering application

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Fiber‑Shaped Soft Actuators:Fabrication,Actuation Mechanism and Application

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Advanced Fiber Materials 2023年第3期5卷 868-895页

作者： Yue Yu Juanjuan Wang Xue Han Shuguang Yang Gaihong An Conghua Lu School of Materials Science and Engineering Tianjin Key Laboratory of Building Green Functional MaterialsTianjin Chengjian UniversityTianjin 300384People’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low‑Dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China School of Materials Science and Engineering Tianjin UniversityTianjin 300072People’s Republic of China Environmental and Operational Medicine Research Department Military Medical Sciences AcademyTianjin 300050People’s Republic of China

As mechanical devices for moving or controlling mechanisms or systems,actuators have attracted increasing attention in various *** to traditional actuators with rigid structures,soft actuators made up of stimulus-responsive soft materials are more adaptable to complex working conditions due to soft bodies and diverse control *** from plate-shaped soft actuators,which have the limited deformations between two dimensional(2D)and 3D-configurations such as bending and twisting,fiber-shaped soft actuators(FSAs)own intriguing deformation modes to satisfy diverse practical *** this mini review,the recent progress on the controlled fabrication of the FSAs is *** advantages and disadvantages of each fabrication method are also ***,the as-developed actuation mechanisms of the FSAs are ***,typical examples of the related applications of the FSAs in different fields have been ***,an outlook on the development tendency of the FSAs is put forward as well.

关键词： Soft actuator Actuation mechanism Fiber-shaped structure Smart materials

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Understanding the stability of advanced inorganic-organic hybrid thin films for advanced resist applications 41

Understanding the stability of advanced inorganic-organic hy...

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Advances in Patterning Materials and Processes XLI 2024

作者： Le, Dan N. Chu, Thi Thu Huong Kim, Jin-Hyun Veyan, Jean-Francois Lee, Won-Il Tiwale, Nikhil Lee, Minjong Choi, Seungsoo Woo, Jihoon Nam, Chang-Yong Choi, Rino Kim, Jiyoung Department of Materials Science and Engineering University of Texas at Dallas RichardsonTX75080 United States Department of Materials Science and Chemical Engineering Stony Brook University Stony BrookNY11794 United States Center for Functional Nanomaterials Brookhaven National Laboratory UptonNY11973 United States Department of Electrical and Computer Engineering University of Texas at Dallas RichardsonTX75080 United States Program in Enviromental and Polymer Engineering Inha University Incheon22212 Korea Republic of Department of Materials Science and Engineering Inha University Incheon22212 Korea Republic of

ISBN: (纸本)9781510672208

In this study, we focus on examining the stability of Al-based inorganic-organic hybrid thin films deposited through the molecular atomic layer deposition (MALD) process in ambient environment. Our observations reveal an initial reduction in material thickness within the first 3 days, followed by a period of stability. XPS analysis is employed to further investigate the chemical alternations in the aged Al-based hybrid thin films, revealing an increase in C=O species as well as overall oxygen content in the material. We also evaluate the effects of atmospheric exposure on the sensitivity of the Al-based hybrid thin films using electron flood exposure. This study aims to enhance the understanding of the stability of a vapor-phase synthesized hybrid thin film system for advanced resist applications. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Atomic layer deposition

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Structural evaluation of Poly(lactic acid) degradation at standardized composting temperature of 58 degrees

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Chemosphere 2024年 354卷 141729页

作者： Oh, Jiwon Park, Sung Bae Cha, Chaenyung Hwang, Dong Ki Park, Seul-A Park, Jeyoung Oh, Dongyeop X. Jeon, Hyeonyeol Koo, Jun Mo Ulsan44429 Korea Republic of Ulsan44919 Korea Republic of Pohang37673 Korea Republic of Department of Chemical and Biomolecular Engineering Sogang University Seoul04107 Korea Republic of Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of Daejeon34113 Korea Republic of Department of Organic Materials Engineering Chungnam National University Daejeon34134 Korea Republic of

The accumulation of petroleum-based plastics on our planet is causing serious environmental pollution. Biodegradable plastics, promoted as eco-friendly solutions, hold the potential to address this issue. However, their impact on the environment and the mechanisms of their natural degradation remain inadequately understood. Furthermore, the specific conditions set forth in international standards for evaluating the biodegradability of biodegradable plastics have led to misconceptions about their real-world behavior. To properly elucidate the relationship between their degradability and structure, this study mimics the thermal effect on poly(lactic acid) (PLA) under standardized composting temperature. The higher the crystallinity of PLA, the lower the degradation rate, which suggests that crystallinity is a key factor in determining degradation. The composting temperature of 58 °C induces crystallization by having a structural effect on the polymer, which in turn reduces the degradation rate of PLA. Therefore, control over temperature and crystallization during the processing and degradation of PLA is crucial, as it not only determines the biodegradability but also enhances the utility. © 2024

关键词： Biodegradability

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