Enhancing catalytic activity of tungsten disulfide through topology
Enhancing catalytic activity of tungsten disulfide through topology
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通过拓扑增强二硫化钨的催化活性
DOI：
10.1016/j.apcatb.2019.117802
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发表时间：
2019-11
期刊：
影响因子：
--
通讯作者：
Lu Bingan
中科院分区：
文献类型：
--
作者：
Wang Longlu;Zhou Gang;Luo Hong;Zhang Qingfeng;Wang Jue;Zhao Chunwang;Rao Apparao M.;Xu Bo;Lu Bingan
Phase transition through local strain engineering is an exciting yet complex phenomenon in nanoscience for enhancing electronic, magnetic, and catalytic properties of nanomaterials. Here we report a topotactic transformation in 2H-WS2nanobelts into 1T-WS2nanohelices, which is mediatedviaan aqueous electrochemical activation method. The resulting nanohelices exhibited superior catalytic properties for HER with a low overpotential of 170 mV for an electrocatalytic current density of 10 mA/cm2. Notably, the electrochemical stability of WS2nanohelices increased after 20,000 cycles, where the stability of the Pt benchmark catalyst is known to decrease, thus implying WS2nanohelices as ideal catalysts for long-term electrochemical processes. The emergence of such enhanced properties is attributed to the strain induced decrease in charge transfer resistance, enhanced per site activity and increased number of active edge sites in 1T-WS2nanohelices. This study points the way for creating topological motifs in 2D materials with novel properties.
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影响因子：
--
作者：
Ming Yang;N. Kotov
通讯作者：
Ming Yang;N. Kotov
影响因子：
9.2
作者：
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通讯作者：
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插有氨离子的稳定金属 1T-WS2 纳米带：结构与电学/光学性质之间的相关性
影响因子：
29.4
作者：
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通讯作者：
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影响因子：
17.1
作者：
Johari, Priya;Shenoy, Vivek B.
通讯作者：
Shenoy, Vivek B.
影响因子：
9.5
作者：
Yan, Xiaodong;Li, KeXue;Chen, Xiaobo
通讯作者：
Chen, Xiaobo