Facile Preparation of Nanosized MoP as Cocatalyst Coupled with TiO2 for Highly Efficient Photocatalytic H2 Production

• Published in: Catalysis letters Vol. 152; no. 10; pp. 3192 - 3201
• Main Authors: Jiang, Xinxin, Fuji, Masayoshi
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2022; Springer Nature B.V
• Subjects: Catalysis; Catalysts; Catalytic activity; Chemistry; Chemistry and Materials Science; Composite materials; Electrodes; Experiments; Hydrogen; Hydrogen evolution; Industrial Chemistry/Chemical Engineering; Light irradiation; Molybdenum; Organometallic Chemistry; Photocatalysis; Physical Chemistry; Radiation; Spectrum analysis; Titanium dioxide; Ultraviolet radiation; Molybdenum phosphide; Hydrogen; Titanium dioxide; Photocatalysis
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-021-03888-y

Presently, combining MoP as a co-catalyst and another subjective semiconductor into a composite catalyst often requires the use of various complex reduction methods. In this study, a TiO 2 /MoP composite photocatalyst with high catalytic performance was successfully prepared by a facile ultrasonic dispersion method. The results of the hydrogen evolution performance, compared to the TiO 2 , showed that the TiO 2 coupling with the MoP co-catalyst remarkably enhanced the photocatalytic performance. The optimized TiO 2 /MoP-5p catalyst had the highest H 2 -evolution rate of 4.3 mmolg −1  h −1 (AQE = 8.3%) under UV light irradiation, which is 19 times higher than that of pure TiO 2 . In addition, it had a good stability. Due to the low impedance and the metal–semiconductor system between the TiO 2 and MoP, the constructed TiO 2 /MoP hybrid can effectively separate the photogenerated electrons and holes, and further improve the photocatalytic activity. Graphical Abstract