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In-situ La doped Co3O4 as highly efficient photocatalyst for solar hydrogen generation
Xu, Jing1,2; Huo, Feng3; Zhao, Yufei4; Liu, Yaoyao1; Yang, Qingqing1; Cheng, Yuanhui1; Min, Shixiong2; Jin, Zhiliang2; Xiang, Zhonghua1
2018-05-03
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN0360-3199
Volume43Issue:18Pages:8674-8682
AbstractPhotocatalytic hydrogen production via water splitting using metal oxide semiconductors has attract great interests because of the two electrons on the kinetics. Pristine Co3O4 was widely studied as efficient photocatalyst, but prefers to produce oxygen due to its lower band-edge positions with regard to water redox potentials. In this work, high efficient photocatalyst basing on non-noble La doped Co3O4 on graphene, i.e., LaxCo3_(x)O4/G, were first reported and prepared by the microwave hydrothermal synthesis. In this newly developed hybrids, La and Co ions were adsorbed on the surface of graphene (G) and subsequently reacted with ammonia to yield the LaxCo3-xO4/G nanohybrid by in-situ chemical deposition methods. The activity for hydrogen generation of the nanohybrid exhibits 2 times higher than undoped Co3O4/G under visible light irradiation. The H-2 evolution of nanohybrid reaches 6.543 mmol g(-1) h(-1) when the molar ratio of La/Co is 10% in the nanohybrid. Our experimental results indicate the incorporation of La doped in the Co3O4 crystal lattice not only forms the lattice defects, resulting in provision for capture trap and the separation of electrons and holes, but also changes the band structure to eventually improve the photocatalytic activity under visible light. Therefore, non-noble La is a promising substitute to prepare highly efficient hydrogen photocatalyst and can be extendedly applied to the other metal oxide semiconductors for solar hydrogen production. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
KeywordCo3O4 Water splitting Hydrogen evolution Graphene La doping
DOI10.1016/j.ijhydene.2018.03.126
Language英语
WOS KeywordPHOTOELECTROCHEMICAL WATER OXIDATION ; P-N HETEROJUNCTION ; CHARGE SEPARATION ; ENERGY-CONVERSION ; RESEARCH PROGRESS ; EVOLUTION ; SEMICONDUCTOR ; PHOTOANODES ; PRESSURE ; HEMATITE
Funding ProjectNingxia Higher Institutions Scientific Research Program[NGY2016146] ; NSF of China[51502012] ; NSF of China[21676020] ; NSF of China[21463001] ; NSF of China[21263001] ; Beijing Natural Science Foundation[2162032] ; Beijing University of Chemical Technology[buctrc201420] ; Beijing University of Chemical Technology[buctrc201714] ; Talent cultivation of State Key Laboratory of Organic-Inorganic Composites ; Fundamental Research Funds for the Central Universities[ZY1508] ; Fundamental Research Funds for the Central Universities[buctrc201524] ; BUCT Fund for Disciplines Construction and Development[XK1502] ; BUCT ; 111 Project[B14004]
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
Funding OrganizationNingxia Higher Institutions Scientific Research Program ; NSF of China ; Beijing Natural Science Foundation ; Beijing University of Chemical Technology ; Talent cultivation of State Key Laboratory of Organic-Inorganic Composites ; Fundamental Research Funds for the Central Universities ; BUCT Fund for Disciplines Construction and Development ; BUCT ; 111 Project
WOS IDWOS:000432769000009
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24884
Collection中国科学院过程工程研究所
Corresponding AuthorXiang, Zhonghua
Affiliation1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
2.North Minzu Univ, Sch Chem & Chem Engn, Yinchuan 750021, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xu, Jing,Huo, Feng,Zhao, Yufei,et al. In-situ La doped Co3O4 as highly efficient photocatalyst for solar hydrogen generation[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2018,43(18):8674-8682.
APA Xu, Jing.,Huo, Feng.,Zhao, Yufei.,Liu, Yaoyao.,Yang, Qingqing.,...&Xiang, Zhonghua.(2018).In-situ La doped Co3O4 as highly efficient photocatalyst for solar hydrogen generation.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,43(18),8674-8682.
MLA Xu, Jing,et al."In-situ La doped Co3O4 as highly efficient photocatalyst for solar hydrogen generation".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 43.18(2018):8674-8682.
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