In situ growing Bi2MoO6 on g-C3N4 nanosheets with enhanced photocatalytic hydrogen evolution and disinfection of bacteria under visible light irradiation
In situ growing Bi2MoO6 on g-C3N4 nanosheets with enhanced photocatalytic hydrogen evolution and disinfection of bacteria under visible light irradiation
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在 g-C3N4 纳米片上原位生长 Bi2MoO6，增强可见光照射下的光催化析氢和细菌消毒
DOI：
10.1016/j.jhazmat.2016.09.008
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发表时间：
2017-01-05
影响因子：
13.6
通讯作者：
Hu, Xiaoyun
中科院分区：
文献类型：
--
作者：
Li, Juan;Yin, Yunchao;Hu, Xiaoyun
采用原位溶剂热法制备了Bi 2 MoO 6/g-C3 N4异质结。以可见光下分解水制氢和细菌杀菌为实验对象，考察了所制备样品的光催化活性。结果表明，片状剥离的g-C3 N4纳米片大大提高了比表面积，缩短了光生电荷的扩散距离，不仅提高了光催化性能，而且有利于与Bi 2 MoO 6的充分相互作用。此外，BM/CNNs复合材料中Bi 2 MoO 6（BM）和g-C3 N4纳米片（CNNs）的紧密接触促进了光生电子-空穴对的转移和分离。20%-BM/CNNs异质结具有最佳的光催化析氢和光催化杀菌效果。此外，在光催化消毒过程中，h（+）是使细菌细胞失活的主要活性物种。这项研究为g-C3 N4基光催化剂提供了新的机会，以满足日益增长的清洁新能源和饮用水的需求。(C)2016爱思唯尔B. V.保留所有权利。
Bi2MoO6/g-C3N4 heterojunctions were fabricated by an in situ solvothermal method using g-C3N4 nanosheets. The photocatalytic activities of as-prepared samples were evaluated by hydrogen evolution from water splitting and disinfection of bacteria under visible light irradiation. The results indicate that exfoliating bulk g-C3N4 to g-C3N4 nanosheets greatly enlarges the specific surface area and shortens the diffusion distance for photogenerated charges, which could not only promote the photocatalytic performance but also benefit the sufficient interaction with Bi2MoO6. Furthermore, intimate contact of Bi2MoO6 (BM) and g-C3N4 nanosheets (CNNs) in the BM/CNNs composites facilitates the transfer and separation of photogenetrated electron-hole pairs. 20%-BM/CNNs heterojunction exhibits the optimal photocatalytic hydrogen evolution as well as photocatalytic disinfection of bacteria. Furthermore, h(+) was demonstrated as the dominant reactive species which could make the bacteria cells inactivated in the photocatalytic disinfection process. This study extends new chance of g-C3N4-based photocatalysts to the growing demand of clean new energy and drinking water. (C) 2016 Elsevier B.V. All rights reserved.