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Investigation on the Growth Mechanism of Cu2 MoS4 Nanotube, Nanoplate and its use as a Catalyst for Hydrogen Evolution in Water.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2020-05-06 , DOI: 10.1002/asia.202000344 Ly T Le 1, 2 , Thao T T Nguyen 2 , Trang T T Nguyen 3 , Mai T T Nguyen 3 , Thuy T D Ung 4 , Phong D Tran 2
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2020-05-06 , DOI: 10.1002/asia.202000344 Ly T Le 1, 2 , Thao T T Nguyen 2 , Trang T T Nguyen 3 , Mai T T Nguyen 3 , Thuy T D Ung 4 , Phong D Tran 2
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Cu2MoS4 is a ternary transition‐metal sulfide that shows great potential in the field of energy conversion and storage, namely catalytic H2 evolution in water and Li‐, Na‐ or Mg‐ion battery. In this work, we report on a growth mechanism of the single‐crystalline Cu2MoS4 nanotube from (NH4)2MoS4 salt and Cu2O nanoparticle. By probing the nature and morphology of solid products generated in function of reaction conditions we find that the crystalline Cu(NH4)MoS4 nanorod is first generated at ambient conditions. The nanorod is then converted into Cu2MoS4 nanotube under hydrothermal treatment due to the Kirkendall effect or a selective etching of the Cu2MoS4 core. Extending the hydrothermal treatment causes a collapse of nanotube generating Cu2MoS4 nanoplate. The catalytic activities of these sulfides are investigated. The Cu2MoS4 shows superior catalytic activity to that of Cu(NH4)MoS4. Catalytic performance of the former largely depends on its morphology. The nanoplate shows superior catalytic activity to the nanotube, thanks to its higher specific electrochemical surface area.
中文翻译：
Cu2 MoS4纳米管，纳米板的生长机理及其在水中析氢催化剂的应用研究。
Cu 2 MoS 4是一种三元过渡金属硫化物，在能量转换和存储领域具有巨大潜力，即在水和锂，钠或镁离子电池中催化生成H 2。在这项工作中，我们报告了由（NH 4）2 MoS 4盐和Cu 2 O纳米粒子形成的单晶Cu 2 MoS 4纳米管的生长机理。通过探查在反应条件下产生的固体产物的性质和形态，我们发现结晶Cu（NH 4）MoS 4纳米棒首先在环境条件下产生。然后将纳米棒转化为铜2 MoS 4纳米管由于Kirkendall效应或对Cu 2 MoS 4核的选择性蚀刻而在水热处理中。延长水热处理会导致纳米管生成Cu 2 MoS 4纳米板塌陷。研究了这些硫化物的催化活性。Cu 2 MoS 4表现出比Cu（NH 4）MoS 4更好的催化活性。前者的催化性能在很大程度上取决于其形态。纳米板由于其较高的比电化学表面积而显示出优于纳米管的催化活性。
更新日期：2020-06-23
中文翻译：
Cu2 MoS4纳米管，纳米板的生长机理及其在水中析氢催化剂的应用研究。
Cu 2 MoS 4是一种三元过渡金属硫化物，在能量转换和存储领域具有巨大潜力，即在水和锂，钠或镁离子电池中催化生成H 2。在这项工作中，我们报告了由（NH 4）2 MoS 4盐和Cu 2 O纳米粒子形成的单晶Cu 2 MoS 4纳米管的生长机理。通过探查在反应条件下产生的固体产物的性质和形态，我们发现结晶Cu（NH 4）MoS 4纳米棒首先在环境条件下产生。然后将纳米棒转化为铜2 MoS 4纳米管由于Kirkendall效应或对Cu 2 MoS 4核的选择性蚀刻而在水热处理中。延长水热处理会导致纳米管生成Cu 2 MoS 4纳米板塌陷。研究了这些硫化物的催化活性。Cu 2 MoS 4表现出比Cu（NH 4）MoS 4更好的催化活性。前者的催化性能在很大程度上取决于其形态。纳米板由于其较高的比电化学表面积而显示出优于纳米管的催化活性。
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