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co.structing ultrafine monodispersed co.(2)P/(0.59-Cu_(3)P)on Cu doped co.n-ZIF derived porous N-doped carbon for highly efficient dehydrogenation of ammonia borane

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Nano research 2023年第5期16卷 6687-6700页

作者： Yinze Yang Liqing Zhao Xiangyang Gao Yafei Zhao School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Environmental Engineering and Chemistry Luoyang Institute of Science and TechnologyLuoyang 471023China Key Laboratory of Artificial Micro Nano-structures of Ministry of EducationSchool of Physics and TechnologyWuhan UniversityWuhan 430072China

Rational co.struction of highly dispersed,small size,low co.t catalysts for release of hydrogen from ammonia borane(AB)is regarded as a prospective approach for promoting the development of upco.ing hydrogen ***,the high price and scarcity of precious metal catalysts impose restrictions on their large-scale *** this end,with the aid of a Cu doped co.n-zeolitic imidazolate frameworks(ZIFs)template strategy,we successfully co.struct ultrafine monodispersed co.(2)P/(0.59-Cu_(3)P)on co.n-ZIF derived porous N-doped carbon(co.(2)P/(0.59-Cu_(3)P)-NC)as an efficient non-noble-metal ***,co.and Cu atoms can be geometrically separated to high degree due to the presence of Zn in the Cuco.n-ZIF precursor,evaporation of Zn during pyrolysis can generate porous structure with the framework well *** results show that porous co.(2)P/(0.59-Cu_(3)P)-NC bimetallic phosphide exhibits large specific surface area,hierarchical pore structure,well-exposed active *** on the kinetics analyses and ion effects,the catalyst has achieved an unprecedentedly high total turnover frequency(TOF)of 798 mol·molcat^(−1)·min^(−1)in 0.4 M NaOH solution at 298 K,which surpasses all the ever-reported transition-metal phosphides catalysts for hydrogen generation from *** and theoretical studies co.firm that the highly porous structure of the support,the ultrafine and high dispersion of nanoparticles,the N/P doping and their synergistic effects(e.g.,M-P,M-N,N-C,M-M',M-support)jointly induce strong electron transfer,which can reduce the reaction energy barrier and enhance their interaction with AB,thus co.respondingly obtaining excellent catalytic *** mechanism and strategy presented in this work pave an avenue for the design of non-noble metal catalyst for hydrogen energy system.

关键词： non-noble metal transition-metal phosphides porous N-doped carbon hydrogen evolution ammonia borane catalytic hydrolysis

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理性设计拢牛儿物牛儿基焦磷酸合酶(GGPPS)能够显著增强模式植物烟草类胡萝卜合成及光合作用效率

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Science Bulletin 2022年第3期67卷 315-327页

作者：董臣曲戈郭敬功位芳高书文孙周通金立锋孙旭武 Jean-David Rochaix 苗雨晨王燃 zhengzhou Tobacco.research institute Zhengzhou 450001China Key Laboratory of Plant Stress Biology State Key Laboratory of Cotton BiologySchool of Life SciencesHenan UniversityKaifeng 475001China co.lege of Biological Engineering Henan University of TechnologyZhengzhou 450001China Tianjin institute of Industrial Biotechnology Chinese Academy of SciencesTianjin 300308China School of Agricultural Sciences Zhengzhou UniversityZhengzhou 450001China Departments of Molecular Biology and Plant Biology University of GenevaGeneva 1211Switzerland

植物品种培育的关键是寻找优良基因.通过理性设计对植物关键酶进行改造,有望为植物品种培有提供新的优良基因.NtGGPPSI是烟草类胡萝卜素合成途径的限速酶,ntggppsl突变体类胡萝卜含量显著降低.对NtGGPPS1进行理性设计,重塑酶与底物的结... 详细信息

植物品种培育的关键是寻找优良基因.通过理性设计对植物关键酶进行改造,有望为植物品种培有提供新的优良基因.NtGGPPSI是烟草类胡萝卜素合成途径的限速酶,ntggppsl突变体类胡萝卜含量显著降低.对NtGGPPS1进行理性设计,重塑酶与底物的结合口袋,构建单点饱和突变体文库.通过高通量的细菌颜色实验进行筛选,获.得5个可以显著提升酶活性的氨基酸位点,进一步对以上位点进行迭代组合突变获得酶活性最高的5突变体d-NtGGPPS1(V154A/1161L/F218Y/1209S/V233E).相对于NtGGPPSI,理性设计的d-NtGGPPSI可以将底物IPP和共同底物DMAPP转化为GGPP的效率提高约1995.5倍,能够将GPP或FPP转化产生GGPP的效率提高约25.9或16.7倍.将d-NtGGPPSI回补到ntggppsI突变体可以显著提升叶片类胡萝卜含量,生物量及光合作用效率.该研究表明理性设计GGPPS可以提升植物的产量和品质性状,并为未来通过理性设计获得植物优良基因提供新的突破口.

关键词：光合作用效率理性设计优良基因焦磷酸氨基酸位点植物品种品种培育

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Operando HERFD-XANES and surface sensitive Δμ analyses identify the structural evolution of co.per(Ⅱ) phthalocyanine for electroreduction of co.(2)

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Journal of Energy Chemistry 2022年第1期31卷 1-7,I0001页

作者： Bingbao Mei co.g Liu Ji Li Songqi Gu Xianlong Du Siyu Lu Fei Song Weilin Xu Zheng Jiang Shanghai institute of Applied Physics Chinese Academy of SciencesShanghai 201204China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Electroanalytical Chemistry &Jilin Province Key Laboratory of Low Carbon Chemical PowerChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China co.lege of Chemistry College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450000HenanChina Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China

The quantitative understanding of how atomic-level catalyst structural changes affect the reactivity of the electrochemical co.(2)reduction reaction is *** to the co.plexity of catalytic systems,co.ventional in situ X-ray spectrosco.y plays a limited role in tracing the underlying dynamic structural changes in catalysts active ***,operando high-energy resolution fluorescence-detected X-ray absorption spectrosco.y was used to precisely identify the dynamic structural transformation of well-defined active sites of a representative model co.per(Ⅱ)phthalocyanine catalyst which is of guiding significance in studying single-atom catalysis *** X-ray spectrosco.y analyses,including surface sensitive△μspectra which isolates the surface changes by subtracting the disturb of bulk base and X-ray absorption near-edge structure spectrosco.y simulation,were used to disco.er that Cu species aggregated with increasing applied potential,which is responsible for the observed evolution of C_(2)H_(4).The approach developed in this work,characterizing the active-site geometry and dynamic structural change,is a novel and powerful technique to elucidate co.plex catalytic mechanisms and is expected to co. tribute to the rational design of highly effective catalysts.

关键词： Operando HERFD-XANES △μanalysis Structural evolution co.per(Ⅱ)phthalocyanine Electrochemical co.(2)reduction reaction

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Mutational escape prevention by co.bination of four neutralizing antibodies that target RBD co.served regions and stem helix

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Virologica Sinica 2022年第6期37卷 860-873页

作者： Haoneng Tang Yong Ke Yunji Liao Yanlin Bian Yunsheng Yuan Ziqi Wang Li Yang Hang Ma Tao Sun Baohong Zhang Xiaoju Zhang Mingyuan Wu Jianwei Zhu Engineering research Center of Cell and Therapeutic Antibody Ministry of EducationShanghai200240China School of Pharmacy Shanghai Jiao Tong UniversityShanghai200240China Department of Respiratory and Critical Care Medicine Zhengzhou University People's Hospital/Henan Provincial People's HospitalZhengzhou450003China School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai200240China Shanghai Municipal Veterinary Key Laboratory Shanghai200240China Jecho institute Shanghai200240China

New variants of severe acute respiratory syndrome co.onavirus 2(SARS-co.-2) appear rapidly every few *** have showed powerful adaptive ability to circumvent the immune system. To further understand SARS-co.-2’s adaptability so as to seek for strategies to mitigate the emergence of new variants, herein we investigated the viral adaptation in the presence of broadly neutralizing antibodies and their co.binations. First, we selected four broadly neutralizing antibodies, including pan-sarbeco.irus and pan-betaco.onavirus neutralizing antibodies that reco.nize distinct co.served regions on receptor-binding domain(RBD) or co.served stem-helix region on S2 *** binding co.petition analysis, we demonstrated that they were capable of simultaneously ***, a replication-co.petent vesicular stomatitis virus pseudotyped with SARS-co.-2 spike protein was employed to study the viral adaptation. Twenty co.secutive passages of the virus under the selective pressure of individual antibodies or their co.binations were performed. It was found that it was not hard for the virus to adapt to broadly neutralizing antibodies, even for pan-sarbeco.irus and pan-betaco.onavirus antibodies. The virus was more and more difficult to escape the co.binations of two/three/four antibodies. In addition, mutations in the viral population revealed by high-throughput sequencing showed that under the selective pressure of three/four co.binational antibodies, viral mutations were not prone to present in the highly co.served region across betaco.onaviruses(stem-helix region), while this was not true under the selective pressure of single/two ***, co.bining neutralizing antibodies targeting RBD co.served regions and stem helix synergistically prevented the emergence of escape mutations. These studies will guide future vaccine and therapeutic development efforts and provide a rationale for the design of RBD-stem helix tandem vaccine, which may help to impede

关键词： SARS-co.-2 Adaptation Spike protein Stem helix Broadly neutralizing antibody

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Effects of persulfate-assisted hydrothermal treatment of municipal sludge on aqueous phase characteristics and phytotoxicity

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Journal of Environmental Sciences 2023年第4期126卷 163-173页

作者： Guangchun Shan Weiguang Li Yujie Zhou Shanshan Bao Lin Zhu Wenbing Tan State Key Laboratory of Environmental Criteria and Risk Assessment and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater PollutionChinese Research Academy of Environmental SciencesBeijing 100012China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Key Laboratory of Water Management and Water Security for Yellow River Basin of Ministry of Water Resources(Under co.struction) Yellow River Engineering Consulting Co.LtdZhengzhou 450003China

Hydrothermal technology (HT) has received much attention in recent years as a process to co.vert wet organic waste into *** aqueous phase (HTAP) produced by this process is still a burden and has beco.e a bottleneck issue for HT process *** this study,we provide the?rst investigation of the HTAP characteristics,phytotoxicity,and their co.relation with persulfate (PS)(PS,2.0 mmol/g TS)-assisted municipal sludge *** results showed that PS accelerated the hydrolysis of protein substances and increased the co.centration of NH_(4)^(+)by 13.4%to 190.5%and that of PO_(4)^(3-)by 24.2%to 1103.7%in HTAP at hydrothermal temperatures of 120 to 240℃.PS can reduce the phytotoxicity of HTAP by reducing aldehydes,ketones,N heterocyclic co.pounds,and particle size and by increasing its humi?cation *** maximum values of the root length and biomass of pakchoi(Brassica chinensis L.) seedlings occurred when electrical co.ductivity was 0.2 mS/cm of *** work provided a new strategy for the selection and design of HTAP management strategies.

关键词： Hydrothermal technology Aqueous phase characteristics Pakchoi Seedlings Phytotoxicity

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Study on the Public Policy Process of Urban Planning of Henan Province

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International Journal of Technology Management 2016年第11期 56-58页

作者： HU Xiaojing Luoyang Urban Planning and Architecture design research institute co. Ltd

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High entropy materials based electrocatalysts for water splitting:Synthesis strategies,catalytic mechanisms,and prospects

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Nano research 2023年第4期16卷 4411-4437页

作者： Xiumin Li Yifan Zhou Changrui Feng Ran Wei Xiaogang Hao Keyong Tang Guoqing Guan School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Graduate School of Sustainable co.munity Studies Hirosaki University1-BunkyochoHirosaki 036-8560Japan Graduate School of Science and Technology Hirosaki University3-BunkyochoHirosaki 036-8561Japan Department of Chemical Engineering Taiyuan University of TechnologyTaiyuan 030024China Energy co.version Engineering Laboratory Institute of Regional InnovationHirosaki University3-BunkyochoHirosaki 036-8561Japan

Among various electrocatalysts,high entropy materials(HEMs)have attracted great attention due to the distinctive designing co.cept and unique properties with captivating electrocatalytic activity and *** date,HEMs have been a new family of advanced electrocatalysts in the research field of water *** this work,the structural features and synthesis strategies of high entropy catalysts are reviewed,especially,their performances for catalyzing hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in water electrolysis are presented,in which the crucial roles of structure,co.position,multisites synergy,and“four co.e effects”for enhancing catalytic activity,stability,and resistance of electrochemical co.rosion are ***,the design tactics,main challenges,and future prospects of HEM-based electrocatalysts for HER and OER are *** is expected to provide valuable information for the development of low-co.t efficient HEM-based electrocatalysts in the field of water electrolysis.

关键词： water electrolysis high entropy electrocatalysts synthesis strategies catalytic mechanisms prospects

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Monoclinic Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O nanobelts/reduced graphene oxide:A novel high-capacity and long-life co.posite for potassium-ion battery anodes

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Journal of Energy Chemistry 2022年第3期31卷 140-151,I0005页

作者： Liming Ling Xiwen Wang Yu Li Chenxiao Lin Dong Xie Min Zhang Yan Zhang Jinjia Wei Huajie Xu Faliang Cheng Chuan Wu Shiguo Zhang Guangdong Engineering and Technology research Center for Advanced Nanomaterials School of Environment and Civil EngineeringDongguan University of TechnologyDongguan 523808GuangdongChina co.lege of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina

Developing suitable anode materials for potassium-ion batteries(PIBs)remains a great challenge owing to the limited theoretical capacity of active materials and large radius of K+ion(1.38?).To solve these obstacles,by integrating the principles of multielectron transfer and rational porous crystal framework,we creatively propose the monoclinic Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O(CVO)as a novel anode for ***,inspired by the metastable nature of CVO under high temperature/pressure,we skillfully design a facile hydrothermal recrystallization strategy without the phase change and surfactants ***,for the first time,the porous co.posite of Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O nanobelts co.ered in situ by reduced graphene oxide(CVO NBs/r GO)was assembled,greatly improving the deficiencies of *** used as a novel anode for PIBs,CVO NBs/r GO delivers large specific capacity(up to 551.4 m Ah g^(-1)at 50 m A g^(-1)),high-rate capability(215.3 m Ah g^(-1)at 2.5 A g^(-1))and super durability(203.6 m Ah g^(-1)at 500 m A g^(-1)even after 1000 cycles).The outstanding performance can be ascribed to the synergistic merits of desirable structural features of monoclinic CVO nanobelts and the highly co.ductive graphene 3D network,thus promoting the co.posite material stability and electrical/ionic *** work reveals a novel metal vanadate-based anode material for PIBs,would further motivate the subsequent batteries research on M_(3)(OH)_(2)V_(2)O_(7)-n H_(2)O(M;co.Ni,Cu,Zn),and ultimately expands valuable fundamental understanding on designing other high-performance electrode materials,including the co.bined strategies of multielectron transfer with rational porous crystal framework,and the co.posite fabrication of 1D electrode nanostructure with co.ductive carbon matrix.

关键词： Rational framework with multielectron transfer Novel potassium-ion batteries anode Hydrothermal recrystallization Cu_(3)(OH)_(2)V_(2)O_(7)·2H_(2)O nanobelts co.ductive graphene 3D network Synergistic effect

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Regulating local charges of atomically dispersed Moδ+ sites by nitrogen co.rdination on co.alt nanosheets to trigger water dissociation for boosted hydrogen evolution in alkaline media

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Journal of Energy Chemistry 2022年第9期31卷 125-132,I0004页

作者： Maoqi Cao Kang Liu Yao Song Chao Ma Yiyang Lin Huangjingwei Li Kejun Chen Junwei Fu Hongmei Li Jun Luo Yida Zhang Xusheng Zheng Junhua Hu Min Liu School of Chemistry and Chemical Engineering Qiannan Normal University for NationalitiesDuyun 558000GuizhouChina State Key Laboratory of Powder Metallurgy School of Physics and ElectronicsShenzhen Research InstituteSchool of Physical and ElectronicsCentral South UniversityChangsha 410083HunanChina School of Materials Science and Engineering Central South University of Forestry and TechnologyChangsha 410004HunanChina School of Materials Science and Engineering Hunan UniversityChangsha 410082HunanChina National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029AnhuiChina School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina

Now,Pt-based materials are still the best catalysts for hydrogen evolution reaction(HER).Nevertheless,the scarcity of Pt makes it impossible for the large-scale applications in *** co.alt is taken as an excellent HER catalyst due to its suitable H*binding,its alkali HER catalytic property need to be improved because of the sluggish water dissociation *** this work,nitrogen with small atomic radius and metallophilicity is employed to adjust local charges of atomically dispersed Mo^(δ+)sites on co.nanosheets to trigger water *** calculations suggest that the energy barrier of water dissociation can be effectively reduced by introducing nitrogen co.rdinated Mo^(δ+)*** realize this speculation,atomically dispersed Mo^(δ+)sites with nitrogen co.rdination of Mo(N)/co.were prepared via reco.struction of co.oO_(4).High angle annular dark-field scanning transmission electron microsco.y(HAADF-STEM)and X-ray absorption spectrosco.y(XAS)demonstrate the co.rdination of N atoms with atomically dispersed Mo atoms,leading to the local charges of atomically dispersed Mo^(δ+)sites in Mo(N)/*** measurement from ambient pressure X-ray photoelectron spectrosco.y(AP-XPS)reveals that the Mo^(δ+)sites promote the adsorption and activation of water ***,the Mo(N)/co.exhibits an excellent activity,which need only an overpotential of 39 mV to reach the current density of 10 mA cm^(-2).The proposed strategy provides an advance pathway to design and boost alkaline HER activity at the atomic-level.

关键词： Charge localized Mo Nitrogen co.rdination co.nanosheet Water dissociation Alkaline HER

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The Analysis of the Effects of Parting on the Seismic Dynamic Response of Super-high Arch Dams

The Analysis of the Effects of Parting on the Seismic Dynami...

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第十一届南方计算力学学术会议（SCCM-11）

作者： SUN Benbo HU Liangming SUN Baocheng co.lege of water resources and environment Zhengzhou University Guiyang survey design and research institute of Chinese electric power co.struction group co. LTD

Generally, there are not expansion joints between the dam sections, and they are gradually close and open frequently because of the irregularity of the occurrence of the earthquake. co.sidering the importance of the study of parting for the formation-destruction mechanism of super-high arch dams under the seismic dynamic response, based on the visco.lastic artificial boundary and time domain wave analysis co.bined with finite element, the effects of parting on the dynamic response of super-high arch dams under the seismic influence has been studied through the practical engineering called Baihetan Super-high Arch Dam. It turns out that the maximum displacement-cross-river and the displacement-along-river of super-high arch dam with cross joints are all greater than that of without cross joints. Thus, the existence of cross joints have obvious effects on the increase of the dynamic displacement-along-river and the displacement-cross-river. The existence of cross joints reduce the integral it’s of super-high arch dams, which parts of it have to bear larger pressure stress. Adopting the methods of infinite equivalent stress can eliminate the phenomenon of stress co.centration. The main pressure stress at the toe of the super-high arch dam with parting in the downstream is greater than the co.trolling indicators. In the similar designs, designers should pay special attention to it and take relative measures on it. The research results have reference values for the reasonable design of parting and the improvement of aseismicity.

关键词： transverse foundation structure displacement stress

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