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Synergistically boosting highly selective CO2-to-CO photoreduction over BiOCl nanosheets via in-situ formation of surface defects and non-precious metal nanoparticles

文献类型：期刊论文

作者Gong, Siwen1,3; Zhu, Gangqiang1; Wang, Ran2; Rao, Fei1; Shi, Xianjin3; Gao, Jianzhi1; Huang, Yu3; He, Chaozheng2; Hojamberdiev, Mirabbos4
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2021-11-15
卷号297页码:10
ISSN号0926-3373
关键词BiOCl Metallic bismuth Oxygen vacancy Selectivity Co-2  photoreduction
DOI10.1016/j.apcatb.2021.120413
通讯作者Zhu, Gangqiang(zgq2006@snnu.edu.cn) ; He, Chaozheng(hecz2019@xatu.edu.cn)
英文摘要Hollow hierarchical BiOCl (BOC) assembled by nanosheets with highly exposed (001) facet is synthesized via a gas-bubble-template strategy. The as-synthesized BOC is further modified by thermal treatment in N2 to in-situ introduce oxygen vacancies (OVs) and metallic bismuth (Bi0) nanoparticles from the BOC lattice (Bi0/OVs-BOC). Thermal treatment in N2 enables an intimate contact between OVs-BOC and Bi0 nanoparticles, which is conducive to the transfer of photogenerated charge carriers. In CO2 photoreduction test, the Bi0/OVs-BOCs exhibit almost 100 % selectivity towards CO, and some of the samples also have a significant increase in yield. For instance, BOC-250 shows about 24.82 mu mol center dot g-1 h-1 CO2-to- CO photoreduction efficiency which is nearly four times higher than that of the BOC with high stability. It is found that suitable energy band structure and desirable intrinsic carrier mobility account for the substantial enhancement of CO2-to- CO photoreduction activity due to the in-situ introduction of OVs and Bi0 nanoparticles. Density functional theory (DFT) calculations unveil that the decreased reaction energy, the weakened adsorption energy for CO, and suitable adsorption energy for H and OH of Bi0/OVs-BOC lead to high selectivity. This work sheds light on the synergistic effect of insitu formed OVs and metal nanoparticles on enhancing the photocatalytic activity and selectivity of solar energy materials.
WOS关键词PHOTOCATALYTIC CO2 REDUCTION ; OXYGEN VACANCIES ; CHARGE SEPARATION ; TIO2 ; PERFORMANCE ; EFFICIENT ; ELECTROREDUCTION ; PHOTOOXIDATION ; DEGRADATION ; MECHANISM
资助项目National Key Research and Devel-opment Program of China[2016YFA0203000] ; National Natural Science Foundation of China[51772183] ; National Natural Science Foundation of China[52072230] ; Key Research and Development Program of Shaanxi Province[2018ZDCXL-SF-02-04] ; Fundamental Research Funds for the Central Universities[GK201903023]
WOS研究方向Chemistry ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000697167900005
资助机构National Key Research and Devel-opment Program of China ; National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province ; Fundamental Research Funds for the Central Universities
源URL[http://ir.ieecas.cn/handle/361006/17034]  
专题地球环境研究所_粉尘与环境研究室
通讯作者Zhu, Gangqiang; He, Chaozheng
作者单位1.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
2.Xian Technol Univ, Sch Mat Sci & Chem Engn, Inst Environm & Energy Catalysis, Xian 710021, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710061, Peoples R China
4.Tech Univ Berlin, Inst Chem, Str 17 Juni 135, D-10623 Berlin, Germany
推荐引用方式
GB/T 7714		 Gong, Siwen,Zhu, Gangqiang,Wang, Ran,et al. Synergistically boosting highly selective CO2-to-CO photoreduction over BiOCl nanosheets via in-situ formation of surface defects and non-precious metal nanoparticles[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2021,297:10.
APA Gong, Siwen.,Zhu, Gangqiang.,Wang, Ran.,Rao, Fei.,Shi, Xianjin.,...&Hojamberdiev, Mirabbos.(2021).Synergistically boosting highly selective CO2-to-CO photoreduction over BiOCl nanosheets via in-situ formation of surface defects and non-precious metal nanoparticles.APPLIED CATALYSIS B-ENVIRONMENTAL,297,10.
MLA Gong, Siwen,et al."Synergistically boosting highly selective CO2-to-CO photoreduction over BiOCl nanosheets via in-situ formation of surface defects and non-precious metal nanoparticles".APPLIED CATALYSIS B-ENVIRONMENTAL 297(2021):10.

入库方式： OAI收割

来源：地球环境研究所

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