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Black TiO2 for Solar Hydrogen Conversion


Titanium dioxide (TiO2 ) has been widely investigated for photocatalytic H2 evolution and photoelectrochemical (PEC) water splitting since 1972. However, its wide bandgap (3.0–3.2 eV) limits the optical absorption of TiO2 for sufficient utilization of solar energy. Blackening TiO2 has been proposed as an effective strategy to enhance its solar absorption and thus the photocatalytic and PEC activities, and aroused widespread research interest. In this article, we reviewed the recent progress of black TiO2 for photocatalytic H2 evolution and PEC water splitting, along with detailed introduction to its unique structural features, optical property, charge carrier transfer property and related theoretical calculations. As summarized in this review article, black TiO2 could be a promising candidate for photoelectrocatalytic hydrogen generation via water splitting, and continuous efforts are deserved for improving its solar hydrogen efficiency.

Funding source: National Natural Science Foundation of China (No. 51672210, No. 51323011, No. 51236007); the Natural Science Foundation of Shaanxi Province (2014KW07-02); the Program for New Century Excellent Talents in University (NCET-13-0455); the Nano Research Program of Suzhou City (ZXG201442); Natural Science Foundation of Jiangsu Province (BK 20141212); Foundation for the Author of National Excellent Doctoral Dissertation of China (No. 201335); National Program for Support of Top-notch Young Professionals; Fundamental Research Funds for the Central Universities; Shenzhen Peacock Plan (No. 1208040050847074).
Related subjects: Production & Supply Chain

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