南方科技大学知识苑(SUSTech KC): Insights into the Origins of Solar-Assisted Electrochemical Water Oxidation in Allotropic Co<sub>5.</sub><sub>47</sub>N/CoN Heterojunctions

题名	Insights into the Origins of Solar-Assisted Electrochemical Water Oxidation in Allotropic Co_5.₄₇N/CoN Heterojunctions
作者	Liu, Sirui 1; Gao, Qiong 1; Geng, Bo 2; Wu, Lili 1; Xu, Zhikun 3; Ma, Xinzhi 1,4,5; Liu, Shijie 1; Li, Boquan 6; Zhang, Mingyi 1; Zhang, Lirong 1; Zhang, Xitian 1
通讯作者	Ma, Xinzhi; Li, Boquan; Zhang, Mingyi
发表日期	2024-02-01
DOI	10.1002/eem2.12724
发表期刊	ENERGY & ENVIRONMENTAL MATERIALS 影响因子和分区
EISSN	2575-0356
摘要	Solar irradiation can efficiently promote the kinetics of the oxygen evolution reaction (OER) during water splitting, where heterojunction catalysts exhibit excellent photoresponsive properties. However, insights into the origins of photoassisted OER catalysis remain unclear, especially the interfaced promotion under convergent solar irradiation (CSI). Herein, novel allotropic Co5.47N/CoN heterojunctions were synthesized, and corresponding OER mechanisms under CSI were comprehensively uncovered from physical and chemical aspects using the in situ Raman technique and electrochemical cyclic voltammetry method. Our results provide a unique mechanism where high-energy UV light promotes the Co3+/4+ conversion process in addition to the ordinary photoelectric effect excitation of the Co2+ material. Importantly, visible light under CSI can produce a photothermal effect for Co2+ excitation and Co3+/4+ conversion, which promotes the OER significantly more than the usual photoelectric effect. As a result, Co5.47N/CoN (containing 28% CoN) obtained 317.9% OER enhancement, which provides a pathway for constructing excellent OER catalysts.
关键词	chemical origins in situ Raman OER photothermal effect physical origins
相关链接	[来源记录]
收录类别	SCI
语种	英语
学校署名	通讯
资助项目	National Natural Science Foundation of China[51872068] ; Graduate Innovation Project of Harbin Normal University["HSDBSCX2021-12","HSDSSCX2022-51"] ; Joint Guidance Project of the Natural Science Foundation of Heilongjiang Province, China[LH2022E093] ; Heilongjiang Province College students innovation and entrepreneurship training Program["S202210231110","S202210231090"]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001174578200001
出版者	WILEY
来源库	Web of Science
引用统计	被引频次[WOS]：3
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/788940
专题	深圳格拉布斯研究院
作者单位	1.Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Heilongjiang, Peoples R China 2.Henan Univ Sci & Technol, Sch Phys & Engn, Luoyang 471023, Henan, Peoples R China 3.Guangdong Univ Petrochem Technol, Sch Sci, Maoming 525000, Guangdong, Peoples R China 4.Hong Kong Polytech Univ, Res Inst Adv Mfg, Dept Mech Engn, Hong Kong 999077, Peoples R China 5.Southern Univ Sci & Technol, Coll Sci, Shenzhen Grubbs Inst, Shenzhen 518055, Guangdong, Peoples R China 6.Adv Res Inst Multidisciplinary Sci, Beijing Inst Technol, Beijing 100081, Peoples R China
通讯作者单位	深圳格拉布斯研究院
推荐引用方式 GB/T 7714	Liu, Sirui,Gao, Qiong,Geng, Bo,et al. Insights into the Origins of Solar-Assisted Electrochemical Water Oxidation in Allotropic Co_5.₄₇N/CoN Heterojunctions[J]. ENERGY & ENVIRONMENTAL MATERIALS,2024.
APA	Liu, Sirui.,Gao, Qiong.,Geng, Bo.,Wu, Lili.,Xu, Zhikun.,...&Zhang, Xitian.(2024).Insights into the Origins of Solar-Assisted Electrochemical Water Oxidation in Allotropic Co_5.₄₇N/CoN Heterojunctions.ENERGY & ENVIRONMENTAL MATERIALS.
MLA	Liu, Sirui,et al."Insights into the Origins of Solar-Assisted Electrochemical Water Oxidation in Allotropic Co_5.₄₇N/CoN Heterojunctions".ENERGY & ENVIRONMENTAL MATERIALS (2024).