Efficient and Robust Hydrogen Evolution: Phosphorus Nitride Imide Nanotubes as Supports for Anchoring Single Ruthenium Sites

doi:10.1002/anie.201804854

	Efficient and Robust Hydrogen Evolution: Phosphorus Nitride Imide Nanotubes as Supports for Anchoring Single Ruthenium Sites
	Chen WX(陈文星); Yang, J; Chen, BX; Liu, XK; Liu, W; Li, ZJ; Dong, JC; Chen, WX; Yan, WS; Yao, T
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2018
卷号	57 期号:30 页码:9495-9500
关键词	carbon-free supports hydrogen evolution reaction (HER) phosphorus nitride ruthenium single atoms
ISSN号	1433-7851
DOI	10.1002/anie.201804854
文献子类	Article
英文摘要	Amorphous phosphorus nitride imide nanotubes (HPN) are reported as a novel substrate to stabilize materials containing single-metal sites. Abundant dangling unsaturated P vacancies play a role in stabilization. Ruthenium single atoms (SAs) are successfully anchored by strong coordination interactions between the d orbitals of Ru and the lone pair electrons of N located in the HPN matrix. The atomic dispersion of Ru atoms can be distinguished by X-ray absorption fine structure measurements and spherical aberration correction electron microscopy. Importantly, RuSAs@PN is an excellent electrocatalyst for the hydrogen evolution reaction (HER) in 0.5 M H2SO4, delivering a low overpotential of 24 mV at 10 mA cm(-2) and a Tafel slope of 38 mV dec(-1). The catalyst exhibits robust stability in a constant current test at a large current density of 162 mA cm(-2) for more than 24 hours, and is operative for 5000 cycles in a cyclic voltammetry test. Additionally, RuSAs@PN presents a turnover frequency (TOF) of 1.67 H(2)s(-1) at 25 mV, and 4.29 H(2)s(-1) at 50 mV, in 0.5 M H2SO4 solution, outperforming most of the reported hydrogen evolution catalysts. Density functional theory (DFT) calculations further demonstrate that the Gibbs free energy of adsorbed H* over the Ru SAs on PN is much closer to zero compared with the Ru/C and Ru SAs supported on carbon and C3N4, thus considerably facilitating the overall HER performance.
电子版国际标准刊号	1521-3773
WOS关键词	OXYGEN REDUCTION ; ATOM CATALYSTS ; CO OXIDATION ; ELECTROCATALYSTS ; ROUTE ; NANOPARTICLES ; PHOSPHIDE ; ELECTRODE ; TRENDS ; H-2
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000438712600050
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286119]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Chen WX,Yang, J,Chen, BX,et al. Efficient and Robust Hydrogen Evolution: Phosphorus Nitride Imide Nanotubes as Supports for Anchoring Single Ruthenium Sites[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2018,57(30):9495-9500.
APA	陈文星.,Yang, J.,Chen, BX.,Liu, XK.,Liu, W.,...&董俊才.(2018).Efficient and Robust Hydrogen Evolution: Phosphorus Nitride Imide Nanotubes as Supports for Anchoring Single Ruthenium Sites.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,57(30),9495-9500.
MLA	陈文星,et al."Efficient and Robust Hydrogen Evolution: Phosphorus Nitride Imide Nanotubes as Supports for Anchoring Single Ruthenium Sites".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 57.30(2018):9495-9500.