气候变化领域集成服务门户(CCPortal): Designing noble metal single-atom-loaded two-dimension photocatalyst for N2 and CO2 reduction via anion vacancy engineering

CCPortal

DOI	10.1016/j.scib.2019.12.025
	Designing noble metal single-atom-loaded two-dimension photocatalyst for N2 and CO2 reduction via anion vacancy engineering
	Zhou P.; Chao Y.; Lv F.; Lai J.; Wang K.; Guo S.
发表日期	2020
ISSN	20959273
起始页码	720
结束页码	725
卷号	65 期号:9
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
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
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207335
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
推荐引用方式 GB/T 7714	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],2020,65(9).
APA	Zhou P.,Chao Y.,Lv F.,Lai J.,Wang K.,&Guo S..(2020).Designing noble metal single-atom-loaded two-dimension photocatalyst for N2 and CO2 reduction via anion vacancy engineering.Science Bulletin,65(9).
MLA	Zhou P.,et al."Designing noble metal single-atom-loaded two-dimension photocatalyst for N2 and CO2 reduction via anion vacancy engineering".Science Bulletin 65.9(2020).