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Hybrid Ni_(2)P/CoP Nanosheets as Efficient and Robust Electrocatalysts for Domestic Wastewater Splitting

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Energy & Environmental Materials 2023年第5期6卷 330-339页

作者： Yeshu Tan Jianrui Feng liqun kang Longxiang Liu Fangjia Zhao Siyu Zhao Dan J.L.Brett Paul R.Shearing Guanjie He Ivan P.Parkin Christopher Ingold Laboratory Department of ChemistryUniversity College LondonLondon WC1H 0AJUK Materials and Catalysis Laboratory Department of Chemical EngineeringUniversity College LondonLondon WC1E 7JEUK Electrochemical Innovation Laboratory Department of Chemical EngineeringUniversity College LondonLondon WC1E 7JEUK School of Chemistry University of LincolnJoseph Banks LaboratoriesLincolnLN67DLUK

The development of low-cost,robust and efficient non-noble metal electrocatalysts is still a pursuit for the hydrogen evolution reaction(HER).Herein,a self-standing electrocatalyst,Ni_(2)P/CoP nanosheet,was fabricated directly on three-dimensional Ni foams by two facile steps,which illustrated both high activity and stability for HER in different *** from the porous structures of nanosheets with large specific surface area and the hybrid Ni_(2)P/CoP,the as-prepared electrocatalyst presented remarkable HER with overpotentials of 65.2 and 87.8 mV to reach a current density of-10 mA cm^(-2)in neutral and alkaline media,*** function theory calculations revealed a lower activation energy of water dissociation and efficient HER steps of hybrid Ni_(2)P/CoP nanosheets compared with mono *** self-standing electrocatalyst maintained excellent chemical ***,the HER process in domestic wastewater was realized with more impressive performance by using Ni_(2)P/CoP nanosheets compared with commercial Pt/*** was continuously generated for 20 h in mildly alkaline dishwashing *** work provides a feasible way to fabricate non-noble metal and self-standing hybrid bimetallic phosphides for HER in neutral and alkaline media,showing great potential for efficient hydrogen production by re-utilizing wastewater resources.

关键词： hybrid hydrogen evolution reaction Ni_(2)P/CoP nanosheet self-standing wastewater splitting

High-silica faujasite zeolite-tailored metal encapsulation for the low-temperature production of pentanoic biofuels

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Journal of Energy Chemistry 2024年第1期88卷 552-560,I0012页

作者： Wenhao Cui Yuanshuai Liu Pengfei Guo Zhijie Wu liqun kang Huawei Geng Shengqi Chu Linying Wang Dong Fan Zhenghao Jia Haifeng Qi Wenhao Luo Peng Tian Zhongmin Liu National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101ShandongChina College of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021Inner MongoliaChina State Key Laboratory of Heavy Oil Processing and Key Laboratory of Catalysis of CNPC China University of PetroleumBeijing 102249China Department of Inorganic Spectroscopy Max Planck Institute for Chemical Energy ConversionMülheim an der Ruhr 45470Germany Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Division of Energy Research Resources Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Leibniz-Institut für Katalyse Albert-Einstein-Straβe 29aRostock 18059Germany

Zeolite-encapsulated metal nanoclusters are at the heart of bifunctional catalysts,which hold great potential for petrochemical conversion and the emerging sustainable ***,efficient encapsulation of metal nanoclusters into a high-silica zeolite Y in particular with good structural integrity still remains a significant ***,we have constructed Ru nanoclusters(~1 nm)encapsulated inside a high-silica zeolite Y(SY)with a SiO_(2)/Al_(2)O_(3) ratio(SAR)of 10 via a cooperative strategy for direct zeolite synthesis and a consecutive impregnation for metal *** with the benchmark Ru/H-USY and other analogues,the as-prepared Ru/H-SY markedly boosts the yields of pentanoic biofuels and stability in the direct hydrodeoxygenation of biomass-derived levulinate even at a mild temperature of 180℃,which are attributed to the notable stabilization of transition states by the enhanced acid accessibility and properly sized constraints of zeolite cavities owing to the good structural integrity.

关键词： High-silica zeolite Y Metal encapsulation Bifunctional catalysis Hydrodeoxygenation Biofuels

Heterogeneous synergistic catalysis by Ru-RuOx nanoparticles for Se-Se bond activation

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Nano Research 2017年第3期10卷 922-932页

作者： Mu Lin liqun kang Jun Gu Linxiu Dai Shengbo Tang Tao Zhang YuhaoWang Lindong Li Xiaoyu Zheng Wei Zhu Rui Si Xuefeng Fu Lingdong Sun Yawen Zhang Chunhua Yan Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications PKU-HKU Joint Laboratory in Rare Earth Materials and 8ioinorganic Chemistry College of Chemistry and Molecular Engineering Peking University 8eijing 100871 China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China

The transition from homogeneous to heterogeneous synthetic chemistry enabled by nanocatalysts necessitates investigations of the reaction mechanism and structure-activity relationships for inorganic nanoparticles and organic substrates. Herein, we report that hydrothermally synthesized ruthenium nano- particles performed differently in the Se--Se bond activation and selenylation of heterocydes, exhibiting a volcano-shaped relationship between catalytic activity and composition. A synergistic effect was observed for Ru-RuOx nanocatalysts, with numerous characterizations and density functional theory （DFT） calculations suggesting that a PhSeSePh molecule can initially be adsorbed on the metallic Ru sites and cleaved into two PhSe＊ species, which subsequently migrate to RuOx sites and react with the nucleophile to achieve the selenylation of heterocycles~

关键词： nanoparticle ruthenium selenium heterogeneous catalysis synergistic effect

企业社会资本参与公司治理的机制与效能:理论分析与实证检验

维普期刊数据库评论

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南开管理评论 2015年第4期18卷 72-81页

作者：康丽群刘汉民暨南大学管理学院

本文从企业视角出发,在界定企业社会资本概念和分析其本质属性的基础上,首先探讨了企业社会资本参与公司治理的机制,认为企业社会资本通过资源通道机制、自我约束机制、非合作行为的惩罚机制、信息披露机制和高层决策的影响机制,分别对... 详细信息

本文从企业视角出发,在界定企业社会资本概念和分析其本质属性的基础上,首先探讨了企业社会资本参与公司治理的机制,认为企业社会资本通过资源通道机制、自我约束机制、非合作行为的惩罚机制、信息披露机制和高层决策的影响机制,分别对股东治理、董事会治理和高管层治理产生影响;然后,根据网络层次分析法(ANP)要求,运用专家评估法和调研数据。从治理收益、治理成本和治理风险三个维度,验证了企业社会资本与物质资本和人力资本共同参与公司治理的效能,证实企业社会资本所有者分享企业控制权、经营权或剩余,在一定条件下能够增加治理收益、降低治理成本、减少治理风险,从而提高公司治理效能;最后,提出了企业社会资本参与公司治理的理论和实践意义,并就需要进一步研究的问题提供了思路。

关键词：企业社会资本资本结构公司治理网络层次分析

In-situ electrochemical modification of pre-intercalated vanadium bronze cathodes for aqueous zinc-ion batteries

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Science China Materials 2022年第5期65卷 1165-1175页

作者： Jianwei Li Ningyun Hong Ningjing Luo Haobo Dong liqun kang Zhengjun Peng Guofeng Jia Guoliang Chai Min Wang Guanjie He State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences(CAS)Fuzhou 350002China Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of Sciences(CAS)Xining 810008China School of Chemistry University of LincolnJoseph Banks LaboratoriesGreen LaneLincolnLN67DLUnited Kingdom Department of Chemistry University College London20 Gordon StreetLondon WC1H 0AJUnited Kingdom Department of Chemical Engineering University College LondonLondon WC1E 7JEUnited Kingdom

Vanadium bronzes have been well-demonstrated as promising cathode materials for aqueous zinc-ion batteries. However, conventional single-ion pre-intercalated V_(4)O_(9)nearly reached its energy/power ceiling due to the nature of micro/electronic structures and unfavourable phase transition during Zn;storage processes. Here, a simple and universal in-situ anodic oxidation method of quasi-layered Ca V_(4)O_(9)in a tailored electrolyte was developed to introduce dual ions(Ca^(2+) and Zn^(2+)) into bilayer δ-V_(4)O_(9)frameworks forming crystallographic ultra-thin vanadium bronzes,Ca^(2+)Zn^(2+)V_(4)O_(9)·n H;O. The materials deliver transcendental maximum energy and power densities of 366 W h kg-1(478 m A h g^(-1)@ 0.2 A g^(-1)) and 6627 W kg-1(245 m A h g^(-1)@10 A g^(-1)), respectively, and the long cycling stability with a high specific capacity up to 205 m A h g^(-1)after 3000 cycles at10 A g^(-1). The synergistic contributions of dual ions and Ca^(2+) electrolyte additives on battery performances were systematically investigated by multiple in-/ex-situ characterisations to reveal reversible structural/chemical evolutions and enhanced electrochemical kinetics, highlighting the significance of electrolyte-governed conversion reaction process. Through the computational approach, reinforced “pillar” effects,charge screening effects and regulated electronic structures derived from pre-intercalated dual ions were elucidated for contributing to boosted charge storage properties.

关键词： in-situ electrochemical conversion dual-ion pre-intercalated V_(2)O_(5) electrolyte-controlled conversion zinc ion batteries

Self-assembled carbon nanoribbons with the heteroatom doping used as ultrafast charging cathodes in zinc-ion hybrid supercapacitors

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Science China Materials 2022年第6期65卷 1495-1502页

作者： Yuying Li Jiajia Huang liqun kang Zhihong Tian Feili Lai Dan J.L.Brett Tianxi Liu Guanjie He School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Department of Chemical Engineering University College LondonLondon WC1E 7JEUK Engineering Research Center for Nanomaterials Henan UniversityKaifeng 475001China Department of Chemistry KU LeuvenCelestijnenlaan 200FLeuven 3001Belgium Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringInternational Joint Research Laboratory for Nano Energy CompositesJiangnan UniversityWuxi 214122China School of Chemistry University of LincolnJoseph Banks LaboratoriesGreen LaneLincolnLN67DLUK

Zinc-ion hybrid supercapacitors(ZHSs)are highly desirable for large-scale energy storage applications owing to the merits of high safety,low cost and ultra-long cycle *** poor rate performance of cathodes,however,severely hinders their ***,aqueous ZHSs with superior performance were fabricated by employing a series of ultrathin carbon nanobelts modified with B,N,O(CPTHBBx).The heteroatom doping can significantly modify the chemical behaviors of carbon frameworks,which could generate numerous active sites and accelerate the charge *** systematic investigation reveals that the B-N groups are active species for fast Zn-ion adsorption and *** a result,the best-performed CPTHB-B2 exhibits an excellent electrochemical performance as cathodes in ZHSs,delivering a high specific capacitance of 415.3 F g^(−1) at 0.5 A g^(−1),a record high capacitance retention of 81%when increasing the current densities from 0.5 to 100 A g^(−1),an outstanding energy density of 131.9 W h kg^(−1) and an exceptionally high power density of 42.1 kW kg^(−1).Our work provides a new cathode design for ultrafast charging Zn-ion storage devices.

关键词： carbon nanoribbons self-assembled heteroatom doping ultrafast charging Zn-ion storage

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孙中山权力制约思想初探

河北省社会主义学院学报 2001年第4期 25-27页

作者：康立群河北省社会科学院河北石家庄050091

孙中山先生总结了中国数千年文明史的政治智慧，深入研究了欧美国家的政治思想、制度，结合中国的国情，提出了一整套治国理念和方针，核心是主权在民与权力制约。主要内容有民主共和思想；五权分立；军政、训政、宪政思想及选举、罢免... 详细信息

孙中山先生总结了中国数千年文明史的政治智慧，深入研究了欧美国家的政治思想、制度，结合中国的国情，提出了一整套治国理念和方针，核心是主权在民与权力制约。主要内容有民主共和思想；五权分立；军政、训政、宪政思想及选举、罢免、创制、复决四大权利学说等。对后人的有益启示是：要用法律切实保障公民的经济地位；要打牢基层民主自治的坚实基础；必须摆正主人与公仆的关系；要重视国家政体的建设与改革。

关键词：权力制约国家政体民主共和思想五权分立主权在民选举基层民主中国经济地位先生

高管长期导向对企业绿色创新的影响研究:环境动态性的调节作用与战略学习能力的中介效应

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商业经济与管理 2021年第10期 34-48页

作者：康丽群刘汉民钱晶晶南昌大学经济管理学院江西南昌330031 暨南大学管理学院广东广州510632

基于战略学习能力和环境动态性视角,探讨了高管长期导向影响企业绿色创新的作用机制和边界条件。通过对中国336家企业第一手数据的分析发现:高管长期导向对企业绿色创新有显著促进作用;战略学习能力在高管长期导向与绿色创新之间起部分... 详细信息

基于战略学习能力和环境动态性视角,探讨了高管长期导向影响企业绿色创新的作用机制和边界条件。通过对中国336家企业第一手数据的分析发现:高管长期导向对企业绿色创新有显著促进作用;战略学习能力在高管长期导向与绿色创新之间起部分中介作用;环境动态性会正向调节高管长期导向与战略学习能力之间的关系。在环境动态性高的情境下,高管长期导向与战略学习能力之间的正向关系更强;在环境动态性低的情境下,高管长期导向与战略学习能力之间的正向关系更弱。环境动态性调节了战略学习能力在高管长期导向与企业绿色创新之间的中介作用,体现为有调节的中介作用。

关键词：高管长期导向战略学习能力环境动态性企业绿色创新

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中熟鲜食苹果新品种‘华丰’

园艺学报 2022年第S01期49卷 7-8页

作者：杨玲丛佩华王强李武兴康立群中国农业科学院果树研究所农业农村部作物基因资源与种质创制辽宁科学观测实验站辽宁兴城125100

‘华丰’是从‘寒富’和‘元帅80-3’杂交后代中选育出的中熟苹果新品种。树体紧凑。果实圆锥形,平均单果质量310.4g。果皮底色黄绿色,盖色浓红色,全红,易着色。果肉淡黄色,质地松脆,肉质细,汁液丰富。可溶性固形物含量13.1%,最高可达15... 详细信息

‘华丰’是从‘寒富’和‘元帅80-3’杂交后代中选育出的中熟苹果新品种。树体紧凑。果实圆锥形,平均单果质量310.4g。果皮底色黄绿色,盖色浓红色,全红,易着色。果肉淡黄色,质地松脆,肉质细,汁液丰富。可溶性固形物含量13.1%,最高可达15.3%,可滴定酸含量0.26%,果实去皮硬度7.1 kg·cm^(-2),综合性状优良。在辽宁兴城9月中下旬成熟,属中熟品种。果实发育期140 d左右,冷藏条件下,贮藏期110 d左右。

关键词：苹果中熟品种