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	The formation of (nife)s-2 pyrite mesocrystals as efficient pre-catalysts for water oxidation
	Ni, Bing1; He, Ting1; Wang, Jia-ou2; Zhang, Simin1; Ouyang, Chen1; Long, Yong1; Zhuang, Jing1; Wang, Xun1
刊名	Chemical science
	2018-03-14
卷号	9期号:10页码:2762-2767
ISSN号	2041-6520
DOI	10.1039/c7sc05452a
通讯作者	Wang, xun(wangxun@mail.tsinghua.edu.cn)
英文摘要	Designing intricate structures and searching for functional materials has attracted wide interest in nanoscience. herein we have fabricated (nife)s-2 pyrite mesocrystals in the form of nearly-single crystalline porous cubes, and studied their self-optimization to realize efficient activity toward water oxidation under electrochemical conditions. the growth mechanism of the mesocrystals was a non-classical mechanism, which was initiated by the formation of a large quantity of small nickel sulfide clusters, followed by the aggregation and transformation of these small clusters in an oriented manner. when these mesocrystals were tested for water oxidation under electrocatalytic conditions, the materials served as pre-catalysts and immediately self-optimized to form amorphous s-doped metal (oxy) hydroxides, which are the real catalytically active materials. as a result, the observed overpotential to reach a current density of 10 ma cm(-2) on glassy carbon electrodes was less than 260 mv. the growth mechanism studied here may provide opportunities for constructing intricate sulfide structures, and the self-optimization process during water oxidation can inspire new thoughts on electrocatalysis.
WOS关键词	OXYGEN EVOLUTION REACTION ; SINGLE-CRYSTALS ; ELECTROCATALYSTS ; CRYSTALLIZATION ; SUPERSTRUCTURES ; NANOPLATELETS ; NANOCRYSTALS ; BIOMINERALS ; ALIGNMENT ; OXIDES
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000431100300014
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177588
专题	高能物理研究所
通讯作者	Wang, Xun
作者单位	1.Tsinghua Univ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ni, Bing,He, Ting,Wang, Jia-ou,et al. The formation of (nife)s-2 pyrite mesocrystals as efficient pre-catalysts for water oxidation[J]. Chemical science,2018,9(10):2762-2767.
APA	Ni, Bing.,He, Ting.,Wang, Jia-ou.,Zhang, Simin.,Ouyang, Chen.,...&Wang, Xun.(2018).The formation of (nife)s-2 pyrite mesocrystals as efficient pre-catalysts for water oxidation.Chemical science,9(10),2762-2767.
MLA	Ni, Bing,et al."The formation of (nife)s-2 pyrite mesocrystals as efficient pre-catalysts for water oxidation".Chemical science 9.10(2018):2762-2767.

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