Large scale preparing carbon nanotube/zinc oxide hybrid and its application for highly reusable photocatalyst

被引：127

作者：

Dai, Kai ^{[1
]}

Dawson, Graham ^{[2
]}

Yang, Song ^{[1
]}

Chen, Zheng ^{[2
]}

Lu, Luhua ^{[2
]}

机构：

[1] Huaibei Normal Univ, Coll Phys & Elect Informat, Huaibei 235000, Peoples R China

[2] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2012年 / 191卷

基金：

中国国家自然科学基金;

关键词：

Photocatalyst; Carbon nanotube/ZnO; Preparation; Characterization; Activity; PHOTOCORROSION INHIBITION; METAL NANOPARTICLES; ZNO; DEGRADATION; FABRICATION; HYBRIDIZATION; ENHANCEMENT; NANOWIRES; EMISSION; BEHAVIOR;

D O I：

10.1016/j.cej.2012.03.008

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

Multi-walled carbon nanotube (MWCNT)/zinc oxide (ZnO) hybrid were large scale synthesized by the reflux method in ethylene glycol with the aid of polyvinylpolypyrrolidone (PVP). The MWCNT/ZnO hybrid was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy spectra (EDS), X-ray photoelectron spectra (XPS), X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM), which have indicated uniform hybrid structure of 18 nm diameter ZnO coating on MWCNT surface. The photocatalytic performance of ZnO nanoparticles and the MWCNT/ZnO hybrid were investigated by removal of methylene blue. Consistent with the shift of its UV-vis diffuse reflectance spectroscopy (DRS) to shorter wavelengths, the heterostructure of MWCNT/ZnO hybrid induces an improvement in photocatalytic performance. The stability of the hybrid was characterized through cyclic photocatalytic test. Results indicated no observable performance degradation for MWCNT/ZnO photocatalyst even after ten recycles. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：571 / 578

页数：8

共 57 条

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