Issue 19, 2020

Hydrogen generation from toxic formaldehyde catalyzed by low-cost Pd–Sn alloys driven by visible light

Abstract

Noble metal co-catalysts are efficient for photocatalytic hydrogen generation from formaldehyde, but their high cost and low abundance limit their scale-up applications. Alloying a second metal with noble metals offers an available way to decrease their usage and consumption and enhances their catalytic activity. Among the potential candidates, Sn is a high abundance element in the earth. In this work, a new highly active low-cost Pd–Sn/RGO catalyst has been developed. Under optimized conditions, the hydrogen evolution rate reached up to 530.07 μmol h−1 driven by visible light. By taking advantage of the optimized adsorption nature of the active sites on the alloy cocatalyst, effective separation and transfer of photogenerated charges have been achieved; at the same time, the photo-generated electrons have a longer lifetime. More interestingly, it has been found that trace amounts of oxygen are helpful in catalytic hydrogen production from HCHO.

Graphical abstract: Hydrogen generation from toxic formaldehyde catalyzed by low-cost Pd–Sn alloys driven by visible light

Supplementary files

Article information

Article type
Paper
Submitted
11 Mar 2020
Accepted
21 Apr 2020
First published
21 Apr 2020

J. Mater. Chem. A, 2020,8, 9616-9628

Hydrogen generation from toxic formaldehyde catalyzed by low-cost Pd–Sn alloys driven by visible light

H. Liu, M. Wang, J. Ma and G. Lu, J. Mater. Chem. A, 2020, 8, 9616 DOI: 10.1039/D0TA02833A

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