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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >NH3- treated MoS2 nanosheets as photocatalysts for enhanced H-2 evolution under visible-light irradiation
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NH3- treated MoS2 nanosheets as photocatalysts for enhanced H-2 evolution under visible-light irradiation

机译：经NH3处理的MoS2纳米片作为光催化剂，可在可见光照射下增强H-2的释放

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摘要

MoS2 is widely applied in photocatalytic H-2 evolution to function as an efficient cocatalyst, whereas it is not yet reported that this material acted as an effective host photocatalyst in this field. Herein, MoS2 nanosheets were prepared by a general hydrothermal process at first, and then treated with flowing NH3 at temperatures from 400 to 900 degrees C to develop a series of novel MoS2-based photocatalysts, which showed considerable photocatalytic activities for H-2 evolution under visible-light irradiation. It was deduced from different instrumental characterizations on the physicochemical properties of photocatalysts that the enhancement of photocatalytic activity by high-temperature NH3 treatment could be mainly attributed to the modification of surface properties ( such as electric property and acid-base properties) by N, which promoted the adsorption of reactants and further accelerated photocatalytic reaction. This work presented an effective route to explore new H-2-evolution photocatalysts by modifying the appropriate materials that were commonly employed as cocatalysts. (C) 2016 Elsevier B.V. All rights reserved.
机译：MoS 2广泛用于光催化H-2的演变中，以充当有效的助催化剂，而尚未报道该材料在该领域中充当有效的主体光催化剂。在此，首先通过一般的水热工艺制备MoS2纳米片，然后在400至900摄氏度的温度下用流动的NH3处理，以开发出一系列新颖的基于MoS2的光催化剂，该催化剂在H-2分解下表现出相当大的光催化活性。可见光照射。由对光催化剂的理化性质的不同仪器表征推论得出，高温NH3处理提高光催化活性的主要原因是N对表面性质（如电性质和酸碱性质）的改性，促进了反应物的吸附并进一步加速了光催化反应。这项工作提出了一条有效的途径，通过修改通常用作助催化剂的合适材料，探索新的H-2-演化光催化剂。 （C）2016 Elsevier B.V.保留所有权利。

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