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Fast and Large-Scale Anodizing Synthesis of Pine-Cone TiO2 for Solar-Driven Photocatalysis

By Yan Liu, Yanzong Zhang, Lilin Wang, Gang Yang, Fei Shen, Shihuai Deng, Xiaohong Zhang, Yan He, Yaodong Hu and Xiaobo Chen

Abstract

Anodization has been widely used to synthesize nanostructured TiO2 films with promising photocatalytic performance for solar hydrogen production and pollution removal. However, it usually takes a few hours to obtain the right nanostructures even on a small scale (e.g., 10 mm × 20 mm). In order to attract interest for industrial applications, fast and large-scale fabrication is highly desirable. Herein, we demonstrate a fast and large-scale (e.g., 300 mm × 360 mm) synthesis of pine-cone TiO2 nanostructures within two min. The formation mechanism of pine-cone TiO2 is proposed. The pine-cone TiO2 possesses a strong solar absorption, and exhibits high photocatalytic activities in photo-oxidizing organic pollutants in wastewater and producing hydrogen from water under natural sunlight. Thus, this study demonstrates a promising method for fabricating TiO2 films towards practical photocatalytic applications

Topics: pine-cone TiO2 nanoclusters, formation mechanism, lattice defects, optical absorption, large-sized films, printing and dyeing wastewater, Chemical technology, TP1-1185, Chemistry, QD1-999
Publisher: MDPI AG
Year: 2017
DOI identifier: 10.3390/catal7080229
OAI identifier: oai:doaj.org/article:8717ab940d884e9d80a04a3d56b613e2
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