A bamboo-inspired hierarchical nanoarchitecture of Ag/CuO/TiO(2) nanotube array for highly photocatalytic degradation of 2,4-dinitrophenol

Xuhong Zhang; Longlu Wang; Chengbin Liu; Yangbin Ding; Shuqu Zhang; Yunxiong Zeng; Yutang Liu; Shenglian Luo

doi:10.1016/j.jhazmat.2016.03.094

A bamboo-inspired hierarchical nanoarchitecture of Ag/CuO/TiO(2) nanotube array for highly photocatalytic degradation of 2,4-dinitrophenol

J Hazard Mater. 2016 Aug 5:313:244-52. doi: 10.1016/j.jhazmat.2016.03.094. Epub 2016 Apr 1.

Authors

Xuhong Zhang¹, Longlu Wang¹, Chengbin Liu², Yangbin Ding¹, Shuqu Zhang¹, Yunxiong Zeng¹, Yutang Liu³, Shenglian Luo¹

Affiliations

¹ State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China.
² State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China. Electronic address: chem_cbliu@hnu.edu.cn.
³ Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China. Electronic address: liuyutang@126.com.

PMID: 27107324
DOI: 10.1016/j.jhazmat.2016.03.094

Abstract

The optimized geometrical configuration of muitiple active materials into hierarchical nanoarchitecture is essential for the creation of photocatalytic degradation system that can mimic natural photosynthesis. A bamboo-like architecture, CuO nanosheets and Ag nanoparticles co-decorated TiO2 nanotube arrays (Ag/CuO/TiO2), was fabricated by using simple solution-immersion and electrodeposition process. Under simulated solar light irradiation, the 2,4-dinitrophenol (2,4-DNP) photocatalytic degradation rate over Ag/CuO/TiO2 was about 2.0, 1.5 and 1.2 times that over TiO2 nanotubes, CuO/TiO2 and Ag/TiO2, respectively. The enhanced photocatalytic activity of ternary Ag/CuO/TiO2 photocatalyst was ascribed to improved light absorption, reduced carrier recombination and more exposed active sites. Moreover, the excellent stability and reliability of the Ag/CuO/TiO2 photocatalyst demonstrated a promising application for organic pollutant removal from water.

Keywords: 2,4-Dinitrophenol; Bamboo-like architecture; Photocatalytic degradation; Ternary photocatalyst.

Publication types

Research Support, Non-U.S. Gov't