Fast and large-scale anodizing synthesis of pine-cone TiO2 for solar-driven photocatalysis

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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.

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Liu, Y., Zhang, Y., Wang, L., Yang, G., Shen, F., Deng, S., … Chen, X. (2017). Fast and large-scale anodizing synthesis of pine-cone TiO2 for solar-driven photocatalysis. Catalysts, 7(8). https://doi.org/10.3390/catal7080229

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