DOI: 10.1016/j.scib.2019.12.025
论文题名: Designing noble metal single-atom-loaded two-dimension photocatalyst for N2 and CO2 reduction via anion vacancy engineering
作者: Zhou P. ; Chao Y. ; Lv F. ; Lai J. ; Wang K. ; Guo S.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 9 起始页码: 720
结束页码: 725
语种: 英语
中文关键词: CRR
; Noble metal
; NRR
; Photocatalyst
; Single atom
英文关键词: Atoms
; Carbon dioxide
; Catalysts
; Electronic properties
; Energy barriers
; Energy conversion
; Formic acid
; Gold compounds
; Ions
; Layered semiconductors
; Molybdenum compounds
; Photocatalysts
; Rhodium compounds
; Anion vacancy
; Design strategies
; Nitrogen reduction
; Optimize the stabilities
; Photo-excitation process
; Photocatalyst materials
; Renewable energies
; Single atoms
; Precious metals
英文摘要: Building highly active and stable noble metal single atom (MSA) catalyst onto photocatalyst materials for nitrogen reduction reaction (NRR) and CO2 reduction reaction (CRR) is a key to future renewable energy conversion and storage technologies. Here we present a design strategy to optimize the stability and electronic property of noble metal single atoms (MSAs, M = Rh, Pd, Ag, Ir, Pt, Au) catalyst supported on g-C3N4 and 2H-MoS2 photocatalysts towards NRR and CRR. Our results indicate that the MSAs tend to be trapped at the anion-vacancy sites of photocatalyst rather than the pristine photocatalyst surface. This anion vacancy can promise the MSAs with an optimized electron-captured ability in the photoexcitation process, thus decreasing the energy barriers of NRR and CRR on MSAs. Especially, it is revealed that the N-vacancy-stabilized IrSA on g-C3N4 and the S-vacancy-stabilized RhSA on 2H-MoS2 own the lowest energy barrier in NRR. However, for CRR, the HCOOH is the main product on MSAs supported by g-C3N4 and 2H-MoS2. The N-vacancy-stabilized PdSA on g-C3N4 and the S-vacancy-stabilized AuSA on 2H-MoS2 show the lowest energy barrier for HCOOH production in CRR. This finding offers an approach to design specific active MSA centres on photocatalysts by the anion vacancy engineering. © 2019 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170183
Appears in Collections: 气候变化与战略
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作者单位: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China; The Beijing Innovation Center for Engineering Science and Advanced Technology, Peking University, Beijing, 100871, China
Recommended Citation:
Zhou P.,Chao Y.,Lv F.,et al. Designing noble metal single-atom-loaded two-dimension photocatalyst for N2 and CO2 reduction via anion vacancy engineering[J]. Science Bulletin,2020-01-01,65(9)