Free-standing iridium and rhodium-based hierarchically-coiled ultrathin   nanosheets for highly selective reduction of nitrobenzene to   azoxybenzene under ambient conditions

doi:10.1039/c6nr05058a

CORC > 北京大学 > 化学与分子工程学院

	Free-standing iridium and rhodium-based hierarchically-coiled ultrathin nanosheets for highly selective reduction of nitrobenzene to azoxybenzene under ambient conditions
	Zhang, Zhi-Ping ; Wang, Xin-Yu ; Yuan, Kun ; Zhu, Wei ; Zhang, Tao ; Wang, Yu-Hao ; Ke, Jun ; Zheng, Xiao-Yu ; Yan, Chun-Hua ; Zhang, Ya-Wen
刊名	NANOSCALE
	2016
关键词	INITIO MOLECULAR-DYNAMICS PALLADIUM NANOSHEETS CATALYTIC-PROPERTIES ORIENTED ATTACHMENT HYDROGEN EVOLUTION ALLOY NANOCRYSTALS SURFACE METALS SHEETS TRANSITION
DOI	10.1039/c6nr05058a
英文摘要	The fabrication of atom-layered two dimensional (2D) noble metal nanosheets (NSs) in a face-centered cubic (fcc) structure is of broad scientific and technological importance, yet this remains a challenge due to the intrinsic cubic symmetry and high surface energy of fcc noble metals. Herein, we report a solid-liquid interface mediated 2D growth method towards the synthesis of hierarchically-coiled ultrathin Ir NSs (thickness <2 nm) and Rh NSs (0.8 nm thick), and bimetallic Ir-Rh NSs (1.2 nm thick) and Pt-Rh NSs (1.2 nm thick) using the benzyl alcohol solvothermal approach. The formation of NSs was attributed to the 2D oriented attachment of tiny seeds through the lateral growth stemming from the abundant defect sites of the seeds produced in the heterogeneous system. The free-standing Ir NSs, Rh NSs and Ir-Rh NSs exhibited high selectivities (from 83.9% to 88.5%) towards the selective reduction of nitrobenzene to azoxybenzene in ethanol at room temperature with 1 atm of hydrogen, because the condensation step of nitrosobenzene (PhNO) and phenylhydroxylamine (PhNHOH) was more exothermic than the dissociation step of Ph-NHOH on the (111) facets of the NSs under alkaline conditions, as indicated by density functional theory (DFT) calculations.; National Key Research and Development Program of the MOST of China [2016YFB0701104]; Natural Science Foundation of China [21025101, 21271011, 21321001]; Beijing Natural Science Foundation [2162019]; SCI(E); EI; PubMed; ARTICLE; ywzhang@pku.edu.cn; 34; 15744-15752; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/492437]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, Zhi-Ping,Wang, Xin-Yu,Yuan, Kun,et al. Free-standing iridium and rhodium-based hierarchically-coiled ultrathin nanosheets for highly selective reduction of nitrobenzene to azoxybenzene under ambient conditions[J]. NANOSCALE,2016.
APA	Zhang, Zhi-Ping.,Wang, Xin-Yu.,Yuan, Kun.,Zhu, Wei.,Zhang, Tao.,...&Zhang, Ya-Wen.(2016).Free-standing iridium and rhodium-based hierarchically-coiled ultrathin nanosheets for highly selective reduction of nitrobenzene to azoxybenzene under ambient conditions.NANOSCALE.
MLA	Zhang, Zhi-Ping,et al."Free-standing iridium and rhodium-based hierarchically-coiled ultrathin nanosheets for highly selective reduction of nitrobenzene to azoxybenzene under ambient conditions".NANOSCALE (2016).