Issue 13, 2018

Enhanced H2 evolution from photocatalytic cellulose conversion based on graphitic carbon layers on TiO2/NiOx

Abstract

Hydrogen evolution from biomass via photocatalytic processes is possible but still challenging in the chemical industry. Herein, we report an enhanced photoreforming of biomass achieved by loading a graphitic carbon layer on TiO2/NiOx nanoparticles. Glucose and polyethylene glycol were used as renewable precursors to prepare a graphitic carbon layer on the NiOx nanoparticles. Enhanced hydrogen production yields of ∼270 μmol h−1 g−1 and ∼4000 μmol h−1 g−1 were obtained at room temperature and 80 °C, respectively, for photoreforming of a cellulose aqueous solution (∼2 wt%) over TiO2/NiOx@Cg. An interface between NiOx and the graphitic overlayer plays a key role in enhancing biomass photoreforming due to carbon modification for the nickel catalyst. This work demonstrates the feasibility of producing hydrogen directly from biomass by a single photocatalytic process, even over a non-precious metal co-catalyst with a fine-tuned structure of the carbon layer.

Graphical abstract: Enhanced H2 evolution from photocatalytic cellulose conversion based on graphitic carbon layers on TiO2/NiOx

Supplementary files

Article information

Article type
Paper
Submitted
04 may 2018
Accepted
25 may 2018
First published
26 may 2018

Green Chem., 2018,20, 3008-3013

Enhanced H2 evolution from photocatalytic cellulose conversion based on graphitic carbon layers on TiO2/NiOx

L. Zhang, W. Wang, S. Zeng, Y. Su and H. Hao, Green Chem., 2018, 20, 3008 DOI: 10.1039/C8GC01398E

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