Substrate effect on the growth of monolayer dendritic MoS2 on LaAlO3   (100) and its electrocatalytic applications

doi:10.1088/2053-1583/3/3/035001

CORC > 北京大学 > 化学与分子工程学院

	Substrate effect on the growth of monolayer dendritic MoS2 on LaAlO3 (100) and its electrocatalytic applications
	Li, Cong ; Zhang, Yu ; Ji, Qingqing ; Shi, Jianping ; Chen, Zhaolong ; Zhou, Xiebo ; Fang, Qiyi ; Zhang, Yanfeng
刊名	2D MATERIALS
	2016
关键词	CHEMICAL-VAPOR-DEPOSITION HYDROGEN EVOLUTION REACTION ACTIVE EDGE SITES MOLYBDENUM-DISULFIDE ULTRATHIN NANOSHEETS GRAIN-BOUNDARY ATOMIC LAYERS THIN-FILMS CRYSTALLINE CATALYST
DOI	10.1088/2053-1583/3/3/035001
英文摘要	accommodating the rapid development of two-dimensional (2D) nanomaterials, chemical vapor deposition (CVD) has become a powerful tool for their batch production with desirable characteristics, such as high crystal quality, large domain size, and tunable domain shape. The crystallinity and morphology of the growth substrates usually play a crucial role in the CVD synthesis of high-quality monolayer MoS2, a kind of 2D layered material which has ignited huge interest in nanoelectronics, optoelectronics and energy harvesting, etc. Herein, by utilizing a low-pressure chemical vapor deposition (LPCVD) system, we demonstrate a regioselective synthesis of monolayer MoS2 on the corrugated single-crystal LaAlO3 (100) with twin crystal domains induced by the second-order phase transition. Unique dendritic morphologies with tunable nucleation densities were obtained in different regions of the undulated substrate, presenting a strong substrate modulation effect. Interestingly, the exposure of abundant active edge sites along with the rather high nucleation density makes the monolayer dendritic MoS2 a good electrocatalyst for hydrogen evolution reaction (HER), particularly featured by a rather high exchange current density (70.4 mu A cm(-2)). Furthermore, uniform monolayer MoS2 films can also be obtained and transferred to arbitrary substrates. We believe that this work provides a new growth system for the controllable synthesis of 2D layered materials with unique dendritic morphologies, as well as its great application potential in energy conversion and harvesting.; National Natural Science Foundation of China [51222201, 51290272, 21073003, 21201012, 51121091, 51072004, 51201069]; Ministry of Science and Technology of China [2011CB921903, 2012CB921404, 2012CB933404, 2013CB932603, 2011CB933003]; Keygrant Project of Chinese Ministry of Education [313026]; Program for New Century Excellent Talents in University [NCET-10-0437]; SCI(E); ARTICLE; 3; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/476609]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Li, Cong,Zhang, Yu,Ji, Qingqing,et al. Substrate effect on the growth of monolayer dendritic MoS2 on LaAlO3 (100) and its electrocatalytic applications[J]. 2D MATERIALS,2016.
APA	Li, Cong.,Zhang, Yu.,Ji, Qingqing.,Shi, Jianping.,Chen, Zhaolong.,...&Zhang, Yanfeng.(2016).Substrate effect on the growth of monolayer dendritic MoS2 on LaAlO3 (100) and its electrocatalytic applications.2D MATERIALS.
MLA	Li, Cong,et al."Substrate effect on the growth of monolayer dendritic MoS2 on LaAlO3 (100) and its electrocatalytic applications".2D MATERIALS (2016).