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Rare Metals 2023年第11期42卷 3622-3629页

作者： Yu-Bo Ma Yu-Wen Wang Da-Feng Zhang Xiu-Xiu Jia Yin Wang Shu-Xing Zhou Thomas Wagberg Guang-Zhi Hu School of Chemical Engineering Chongqing Chemical Industry Vocational CollegeChongqing401220China School of Materials and Energy Institute for Ecological Research and Pollution Control of Plateau LakesYunnan UniversityKunming650504China School of Materials Science and Engineering Liaocheng UniversityLiaocheng252000China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang441053China Department of Physics UmeåUniversity90187UmeåSweden

The treatment of nitroaromatics in wastewater is a significant issue that must be addressed because of their high cytotoxicity.The catalytic reduction of 4-nitrophenol(4-NP)to the widely used 4-aminophenol(4-AP)is an excellent method for 4-NP removal.However,performing this reaction is difficult.In this study,two-dimensional(2D)graphene oxide(GO)with oxygen-containing surface groups was used as a substrate for the in situ anchoring ofPdAu alloy nanocrystals.

关键词： alloy rapid cluster

Compositional engineering of HKUST-1/sulfidized NiMn-LDH on functionalized MWCNTs as remarkable bifunctional electrocatalysts for water splitting

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Carbon Energy 2023年第12期5卷 1-20页

作者： Mengshan Chen Reza Abazari Soheila Sanati Jing Chen Mingyuzhi Sun Cunhong Bai Alexander M.Kirillov Yingtang Zhou Guangzhi Hu Zhejiang Key Laboratory of Petrochemical Environmental pollution control National Engineering Research Center for Marine AquacultureMarine Science and Technology CollegeZhejiang Ocean UniversityZhoushanChina Department of Chemistry Faculty of ScienceUniversity of MaraghehMaraghehIran State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuanChina Departamento de Engenharia Química Centro de Química EstruturalInstitue of Molecular SciencesInstituto Superior TécnicoUniversidade de LisboaLisbonPortugal School of Ecology and Environmental Science Institute for Ecological Research and Pollution Control of Plateau LakesYunnan UniversityKunmingChina

Water-splitting reactions such as the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)typically require expensive noble metal-based electrocatalysts.This has motivated researchers to develop novel,cost-effective electrocatalytic systems.In this study,a new multicomponent nanocomposite was assembled by combining functionalized multiwalled carbon nanotubes,a Cu-based metal–organic framework(MOF)(HKUST-1 or HK),and a sulfidized NiMn-layered double hydroxide(NiMn-S).The resulting nanocomposite,abbreviated as MW/HK/NiMn-S,features a unique architecture,high porosity,numerous electroactive Cu/Ni/Mn sites,fast charge transfer,excellent structural stability,and conductivity.At a current density of 10 mA cm-2,this dual-function electrocatalyst shows remarkable performance,with ultralow overpotential values of 163 mV(OER)or 73 mV(HER),as well as low Tafel slopes(57 and 75 mV dec-1,respectively).Additionally,its high turnover frequency values(4.43 s-1 for OER;3.96 s-1 for HER)are significantly superior to those of standard noble metal-based Pt/C and IrO2 systems.The synergistic effect of the nanocomposite's different components is responsible for its enhanced electrocatalytic performance.A density functional theory study revealed that the multi-interface and multicomponent heterostructure contribute to increased electrical conductivity and decreased energy barrier,resulting in superior electrocatalytic HER/OER activity.This study presents a novel vision for designing advanced electrocatalysts with superior performance in water splitting.Various composites have been utilized in water-splitting applications.This study investigates the use of the MW/HK/NiMn-S electrocatalyst for water splitting for the first time to indicate the synergistic effect between carbon-based materials along with layered double hydroxide compounds and porous compounds of MOF.The unique features of each component in this composite can be an interesting topic in the field of water splitting.

关键词： bifunctional electrocatalyst electroactive sites multicomponent synergic effect water splitting

Graphene-based electrodes and catalysts for electroreduction of CO_(2)to low-carbon alcohols

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Materials Reports(Energy) 2023年第2期3卷 142-153,I0004页

作者： Lei Wang Patrick Lira Guangzhi Hu Jianmin Luo Zhao Sun Richard Davis Yudai Huang Sam Toan Department of Chemical Engineering University of Minnesota-DuluthDuluthMN55812USA institute for ecological research and pollution control of plateau lakes School of Ecology and Environmental ScienceYunnan UniversityKunming650504China School of Chemistry and Civil Engineering Shaoguan UniversityShaoguan512005China School of Energy Science and Engineering Central South UniversityChangsha410083China State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqi830017China

The electrochemical reduction of CO_(2)(CO_(2)ER)into the renewable and sustainable green fuels,such as low-carbon alcohols,is one of several workable strategies.CO_(2)ER can be combined with renewable electricity to transform intermittent energy sources(such as wind,hydro,and solar)into a fuel that can be stored until it is ready to be used.The intrinsic characteristics of the employed catalyst have a significant and substantial effect on the efficiency of CO_(2)ER and the ensuing economic viability.The paradigmatic multicarbon alcohol catalysts should increase the concentration of*CO in the reaction environment,stabilize the key intermediate products during the reaction,and facilitate the C-C coupling interaction.Since graphene has a large surface area and exceptional conductivity,it has been used as a support for active phases(nanoparticles or nanosheets).It is possible for graphene to enhance charge transport and accelerate CO_(2)conversion through its electronic and structural coupling effects.At the interface,a synergy can be produced that improves CO_(2)ER by increasing*CO adsorption,intermediate binding,and stability.This article focuses on recent advancements in graphene-based catalysts that promote CO_(2)ER to alcohols.Likewise,this paper also describes and discusses the key role graphene plays in catalyzing CO_(2)ER into alcohols.Finally,we hope to provide future ideas for the design of graphene-based electrocatalysts.

关键词： Graphene Electrocatalysts CO_(2)reduction Alcohol Electrode

Electrochemical deposited amorphous FeNi hydroxide electrode for oxygen evolution reaction

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Journal of Energy Chemistry 2022年第6期31卷 585-592,I0016页

作者： Zhengzhi Yin Runze He Yongcai Zhang Ligang Feng Xiang Wu Thomas Wågberg Guangzhi Hu College of Biological Chemical Sciences and EngineeringJiaxing UniversityJiaxing 314001ZhejiangChina School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002JiangsuChina School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina institute for ecological research and pollution control of plateau lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504LiaoningChina National Local Joint Engineering Laboratory to Functional Adsorption Material Technology for the Environmental Protection Soochow UniversitySuzhou 215123JiangsuChina Department of Physics UmeåUniversity90187 UmeåSweden

The electrodeposition approach is significant in electrode fabrication for practical application.Herein,the electrodeposited amorphous NiFe hydroxide species for oxygen evolution reaction (OER) in water splitting reaction is demonstrated by revealing the synergistic effect influenced by the support electrode of Fe and Ni foil and the contents of Fe and Ni in the electrolyte.All the electrodeposited samples have an amorphous structure and similar profiles of binding energy and chemical states for Fe and Ni as characterized by the spectroscopic techniques.While the support effect and Fe/Ni synergistic effect are indeed observed for the varied catalytic performances observed for the different electrodes;the Ni foil supported catalyst exhibits much higher performance than that of the Fe foil supported catalyst,and the different redox potentials of Ni species in the different Fe/Ni electrode resulting from the Fe–Ni synergism are observed in the cyclic voltammetry curve analysis.The surface roughness and the electrochemical surface area are also influenced by the support effect and the Fe/Ni ratio in the plating electrolyte.The optimal electrode shows a very low overpotential of~200 mV to reach 10 mA cm^(-2),and very high catalytic stability by the consecutive cyclic voltammetry measurements and 20 h stability test.Though it has the largest electrochemical surface area,the highest catalytic efficiency for these active sites is also indicated by the specific activity and turnover frequency polarization curves.The current work shows the effective experience for the electrodeposited Fe/Ni based catalysts in large-scale fabrication,which can be more practical for hydrogen generation in the alkaline water electrolysis.

关键词： Electrodeposition Amorphous structure NiFe hydroxide Oxygen evolution reaction Alkaline water electrolysis

Eco-chemical mechanisms govern phytoplankton emissions of dimethylsulfide in global surface waters

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National Science Review 2021年第2期8卷 43-50页

作者： Xuwei Deng Jun Chen Lars-Anders Hansson Xia Zhao Ping Xie Donghu Experimental Station of Lake Ecosystems State Key Laboratory of Freshwater Ecology and Biotechnology of ChinaInstitute of HydrobiologyChinese Academy of Sciences Department of Biology/Aquatic Ecology Lund University State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences institute for ecological research and pollution control of plateau lakes School of Ecology and Environmental ScienceYunnan University

The anti-greenhouse gas dimethylsulfide(DMS) is mainly emitted by algae and accounts for more than half of the total natural flux of gaseous sulfur to the atmosphere, strongly reducing the solar radiation and thereby the temperature on Earth. However, the relationship between phytoplankton biomass and DMS emissions is debated and inconclusive. Our study presents field observations from 100 freshwater lakes, in concert with data of global ocean DMS emissions, showing that DMS and algal biomass show a hump-shaped relationship, i.e. DMS emissions to the atmosphere increase up to a p H of about 8.1 but, at higher p H, DMS concentrations decline, likely mainly due to decomposition. Our findings from lake and ocean ecosystems worldwide were corroborated in experimental studies. This novel finding allows assessments of more accurate global patterns of DMS emissions and advances our knowledge on the negative feedback regulation of phytoplankton-driven DMS emissions on climate.

关键词： phytoplankton lake ecosystem biological regulation of global climate dimethylsulfide global surface oceans

Competition between acidic sites and hydrogenation sites in Cu/ZrO_(2) catalysts with different crystal phases for conversion of biomass-derived organics

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Green Energy & Environment 2021年第4期6卷 557-566页

作者： Yuewen Shao Tingting Wang Kai Sun Zhanming Zhang Lijun Zhang Qingyin Li Shu Zhang Guangzhi Hu Xun Hu School of Material Science and Engineering University of JinanJinan250022China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing210037China institute for ecological research and pollution control of plateau lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504China

Oxides with different crystal phases can have important effects on the configuration of surface atoms,which can further affect the distribution of hydrogenation sites and acidic sites as well as the competitions of these varied types of catalytic sites.This could be potentially used to tailor the distribution of the products.In this study,zirconium oxides with different crystal phases supported copper catalysts were prepared for the hydrogenation of the biomass-derived furfural,vanillin,etc.The results showed that both calcination temperature and Cu species affected the shift of zirconia from tetragonal phase to the monoclinic phase.Monoclinic zirconia supported copper catalyst can effectively catalyze the hydrogenation of furfural to furfuryl alcohol via hydrogenation route due to its low amount of Brønsted acidic sites,although the surface area and the exposed metallic Cu surface area were much lower than the tetragonal zirconia supported copper catalyst.Zirconia with tetragonal or tetragonal/monoclinic phases supported copper catalysts contain abundant acidic sites and especially the Br?nsted acidic sites,which catalyzed mainly the conversion of furfural via the acid-catalyzed routes such as the acetalization,rather than the hydrogenation.The acidic sites over the Cu/ZrO_(2)catalyst played more predominant roles than the hydrogenation sites in determining the conversion of the organics like furfural and vanillin.

关键词： Zirconia supported copper catalyst Crystal phase Hydrogenation Hydrogenation sites Acidic sites

Experimental determination of sediment transport capacity of rill flow over sandified loess slope

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International Soil and Water Conservation research 2023年第2期11卷 301-310页

作者： Ren Feng Jiacun Chen Zhenyue Xie Dingqiang Li Zaijian Yuan National-Regional Joint Engineering research Center for Soil pollution control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou510650China Meizhou International institute of Soil and Water Conservation Meizhou514000China

Rill erosion is affected by the sand particle content in soil,especially in the wind and water erosion transition region of the Loess plateau.The sediment transport capacity(STC)is a key parameter in rill erosion research,assessing the impact of aeolian sand intrusion on the STC of rill flow is of importance for a better understanding of rill erosion.This study aimed to assess the effect of aeolian sand intrusion on the STC on sandified loess slopes,with typical slopes and flow discharges,using a flume system which consisting of a sediment-feeding and a sediment-supply/settlement flume.The sediment feeding flume was jointed by 10°higher than that of the sediment measurement flume section.Three flow discharges(2,4,and 8 L min^(-1))and four slope gradients(5°,10°,15°,and 25°)were used to represent the natural hydrological conditions under three intrusion rates(SIR)of aeolian sands(10%,20%,and 50%).The results show that STC increased with slope gradient and flow discharge,and the relationship between the STC and the SIR was significantly affected by the slope gradient;the STCs decreased with the SIR on a slope of 5°but increased with the SIR on steep slopes of 15°-25°,implying a significant impact of slope gradient on the relationship between SIR and STC.The SIR of 50%resulted in the highest sediment concentration nearly 1200 kg m^(-3)on slopes of 25°.On sandified loess slopes of 10%,20%,and 50%SIR,the STC were about 30%,46%,and 57%higher than on loess slopes,indicating an increased erosion rate by sand particle intrusion into loess soil.These results highlight the impact of sand intrusion on STC of rill flow and provide deeper insights into the soil loss process on the sandified loess slope.

关键词： Sand intrusion Loess soil Rill flow Transport capacity

Heterostructured bimetallic phosphide nanowire arrays with latticetorsion interfaces for efficient overall water splitting

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Journal of Energy Chemistry 2023年第2期77卷 420-427,I0011页

作者： Hua Zhang Hongyi Li Yintang Zhou Fang Tan Ruijie Dai Xijun Liu Guangzhi Hu Laiming Jiang Anran Chen Renbing Wu School of Materials and Energy Institute for Ecological Research and Pollution Control of Plateau LakesSchool of Ecology and Environmental ScienceYunnan UniversityKunming 650091YunnanChina Department of Materials Science Fudan UniversityShanghai 200433China Guangzhou Panyu Polytechnic Guangzhou 511483GuangdongChina National Engineering research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004ZhejiangChina MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004GuangxiChina Engineering research Center of Alternative Energy Materials&Devices Ministry of EducationSichuan UniversityChengdu 610065SichuanChina

Designing cost-effective and high-efficiency electrocatalysts is critical to the water splitting performance during hydrogen generation.Herein,we have developed Fe_(2)P-Co_(2)P heterostructure nanowire arrays with excellent lattice torsions and grain boundaries for highly efficient water splitting.According to the microstructural investigations and theoretical calculations,the lattice torsion interface not only contributes to the exposure of more active sites but also effectively tunes the adsorption energy of hydrogen/oxygen intermediates via the accumulation of charge redistribution.As a result,the Fe_(2)P-Co_(2)P heterostructure nanowire array exhibits exceptional bifunctional catalytic activity with overpotentials of 65 and 198 mV at 10 mA cm^(-2) for hydrogen and oxygen evolution reactions,respectively.Moreover,the Fe_(2)P-Co_(2)P/NF-assembled electrolyzer can deliver 10 mA cm^(-2) at an ultralow voltage of1.51 V while resulting in a high solar-to-hydrogen conversion efficiency of 19.8%in the solar-driven water electrolysis cell.

关键词： Transition metal phosphide Lattice torsion Heterogeneous interfaces Water splitting Theoretical calculation

Molecular Mechanisms of Spawning Habits for the Adaptive Radiation of Endemic East Asian Cyprinid Fishes

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research 2023年第1期2022卷 121-137页

作者： Feng Chen Yeke Wang Jun He Liang Chen Ge xue Yan Zhao Yanghui Peng Carl mith Jia Zhang Jun Chen Ping Xie Donghu Experimental Station of Lake Ecosystems State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhan 430072China University of Chinese Academy of Sciences Beijing 100049China Department of Ecology and Vertebrate Zoology University of LodzLodzPoland institute of Vertebrate Biology Academy of Sciences of the Czech RepublicBrnoCzech Republic institute of ecological research and pollution control of plateau lakes School of Ecology and EnvironmentYunnan UniversityKunming 650500China

Despite the widespread recognition of adaptive radiation as a driver of speciation,the mechanisms by which natural selection generates new species are incompletely understood.The evolutionary radiation of endemic East Asian cyprinids has been proposed as evolving through a change in spawning habits,involving a transition from semibuoyant eggs to adhesive eggs in response to crosslinked river-lake system formation.Here,we investigated the molecular mechanisms that underpin this radiation,associated with egg hydration and adhesiveness.We demonstrated that semibuoyant eggs enhance hydration by increasing the degradation of yolk protein and accumulation of Ca2+and Mga+ions,while adhesive eggs improve adhesiveness and hardness of the egg envelope by producing an adhesive layer and a unique 4th layer to the egg envelope.Based on multiomics analyses and verification tests,we showed that during the process of adaptive radiation,adhesive eggs downregulated the"vitellogenin degradation pathway","zinc metalloprotease pathway,"and"ubiquitin-proteasome pathway"and the pathways of Ca^(2+)and Mg^(2+)active transport to reduce their hydration.At the same time,adhesive eggs upregulated the crosslinks of microfilament-associated proteins and adhesive-related proteins,the hardening-related proteins of the egg envelope,and the biosynthesis of glycosaminoglycan in the ovary to generate adhesiveness.These findings illustrate the novel molecular mechanisms associated with hydration and adhesiveness of freshwater fish eggs and identify critical molecular mechanisms involved in the adaptive radiation of endemic East Asian cyprinids.We propose that these key egg attributes may function as“magic traits”in this adaptive radiation.

关键词： hydration envelope incomplete

Who is the missing “matchmaker” between proteins and nucleic acids?

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The Innovation 2021年第3期2卷 26-27页

作者： Ping Xie Donghu Experimental Station of Lake Ecosystems State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhan 430072P.R.China institute for ecological research and pollution control of plateau lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650500P.R.China

Sixty years has passed since the cracking of the genetic code by Nirenberg and Matthaei in 1961;however,the origin of the code remains one of the greatest mysteries.It is great for a cell to innovate protein synthesis manipulated by RNA,and vice versa,which is a still unsolved“chicken-and-egg”paradox.Finding a solution is of crucial importance.Yet,most biologists hold a pessimistic view that no one knows exactly how the genetic code came into being,as an exact reconstruction of the process of the construction of genetic code may never be possible,or as there is no evidence in physics or chemistry of the control of chemical reactions by a sequence of any sort or of a code between sequences,and many papers have been published with titles indicating that their subject is the origin of the genetic code,while the content actually deals only with the evolution of the genetic code1.

关键词： exact exactly synthesis