g-C3N4 decorated ZnO nanorod arrays for enhanced photoelectrocatalytic performance
g-C3N4 decorated ZnO nanorod arrays for enhanced photoelectrocatalytic performance
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g-C3N4 修饰的 ZnO 纳米棒阵列可增强光电催化性能
DOI：
10.1016/j.apsusc.2015.08.066
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发表时间：
2015-12-15
影响因子：
6.7
通讯作者：
Liu, Zhao-Qing
中科院分区：
文献类型：
--
作者：
Kuang, Pan-Yong;Su, Yu-Zhi;Liu, Zhao-Qing
异质结不仅可以提供宽范围的太阳光吸收，而且还可以促进光生载流子的分离，从而提高光电化学效率。在此，我们报告了异质结构的g-C3 N4/ZnO纳米棒阵列（NRA），以增强光电催化性能。通过对三聚氰胺前驱体的热处理，在ZnO纳米棒表面均匀包覆了一层约20-30 nm的g-C3 N4壳层。与ZnO和g-C3 N4相比，所制备的g-C3 N4/ZnO NRA在可见光照射下对亚甲基蓝（MB）具有更高的光电催化脱色活性。这种光电催化性能的增强可能主要归因于提高了载流子从光激发的g-C3 N4到ZnO的跨g-C3 N4/ZnO界面的分离效率。(C)2015爱思唯尔B. V.保留所有权利。
Heterojunction can not only offer a wide range of solar light absorption but also facilitate the separation of photoinduced charge carriers, and thereby lead to enhanced photoelectrochemical efficiency. Herein, we report the heterostructured g-C3N4/ZnO nanorod arrays (NRAs) for enhanced photoelectrocatalytic performance. The g-C3N4 shell layer of about 20-30 nm was coated on the surface of ZnO nanorod uniformly through thermal annealing the melamine precursor. Compared to the pristine ZnO and g-C3N4, the as-prepared g-C3N4/ZnO NRAs exhibit enhanced photoelectrocatalytic activity for methylene blue (MB) decolorization under visible light illumination. This enhancement of photoelectrocatalytic performance may be mainly attributed to improved separation efficiency of charge carriers from photoexcited g-C3N4 to ZnO across the g-C3N4/ZnO interfaces. (C) 2015 Elsevier B.V. All rights reserved.