Non-precious molybdenum nanospheres as a novel cocatalyst for full-spectrum-driven photocatalytic CO reforming to CH.

Author(s) Huang, S.; Yi, H.; Zhang, L.; Jin, Z.; Long, Y.; Zhang, Y.; Liao, Q.; Na, J.; Cui, H.; Ruan, S.; Yamauchi, Y.; Wakihara, T.; Kaneti, Y.Valentino; Zeng, Y.J.
Journal J Hazard Mater
Date Published 2020 Jul 05

Photocatalytic CO reforming is considered to be an effective method for clean, low-cost, and environmentally friendly reduction and conversion of CO into hydrocarbon fuels by utilizing solar energy. However, the low separation efficiency of charge carriers and deficient reactive sites have severely hampered the efficiency of the photocatalytic CO reforming process. Therefore, cocatalysts are usually loaded onto the surface of semiconductor photocatalysts to reduce the recombination of charge carriers and accelerate the rates of surface reactions. Herein, molybdenum (Mo) nanospheres are proposed as a novel non-precious cocatalyst to enhance the photocatalytic CO reforming of g-CN significantly. The Mo nanospheres boost the adsorption of CO and activate the surface COvia a photothermal effect. The time-resolved fluorescence decay spectra reveals that the lifetime of photo-induced charge carriers is prolonged by the Mo nanospheres, which guarantees the migration of charge carriers from g-CN to Mo nanospheres. Unexpectedly, Mo loaded g-CN can effectively utilize a wide spectral range from UV to near-infrared region (NIR, up to 800 nm). These findings highlight the potential of Mo nanospheres as a novel cocatalyst for photocatalytic CO reforming to CH.

DOI 10.1016/j.jhazmat.2020.122324
ISSN 1873-3336
Citation J Hazard Mater. 2020;393:122324.