Cobalt doped ZrO2 decorated multiwalled carbon nanotube: A promising nanocatalyst for photodegradation of indigo carmine and eosin Y dyes

被引：57

作者：

Anku, William Wilson ^{[1
]}

Oppong, Samuel Osei-Bonsu ^{[1
]}

Shukla, Sudheesh Kumar ^{[1
]}

Agorku, Eric Selorm ^{[1
]}

Govender, Poomani Penny ^{[1
]}

机构：

[1] Univ Johannesburg, Dept Appl Chem, POB 17011, ZA-2028 Johannesburg, South Africa

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2016年 / 26卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Multiwalled carbon nanotube; Cobalt; ZrO2; Nanocomposite; Photodegradation; PHOTOCATALYTIC DEGRADATION; WASTE-WATER; TIO2; REMOVAL;

D O I：

10.1016/j.pnsc.2016.06.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports the degradation of indigo carmine and eosin Y dyes in water, catalyzed by cobalt and multiwalled carbon nanotube modified zirconium oxide nanocomposite (Co-ZrO2-MWCNTs) under simulated visible light. The bare ZrO2, ZrO2-MWCNTs, Co-ZrO2 and Co-ZrO2-MWCNTs with different percentage compositions of cobalt were synthesized by homogeneous co-precipitation method. Characterization of the prepared nanocomposites was carried out using X-Ray powder Diffraction (XRD), Fourier Transformer Infrared (FTIR) Spectroscopy, Transmission Electron Microscopy (TEM), Raman Spectroscopy, (UVVis)-Spectroscopy and Energy Dispersive Spectroscopy (EDS) for their structure, formation, morphology, size and elemental analysis. The experimental results indicated that all the cobalt and MWCNTs modified nanocomposites demonstrated higher photocatalytic activities compared to the bare ZrO2. The most efficient catalyst (0.5% Co-ZrO2-MWCNTs) with the band gap and Ka values of 5.21eV and 16.86x10(-3) min(-1) respectively exhibited 98% degradation efficiency toward indigo carmine and 87% toward eosin Y in 180 min. (C) 2016 Chinese Materials Research Society. Production and hosting by Elsevier B.V.

引用

页码：354 / 361

页数：8

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