Photocatalytic dehydrogenation of formic acid promoted by a superior PdAg@g-C3N4 Mott–Schottky heterojunction

Herein, we report the production of a superior Mott–Schottky heterojunction that is based on PdAg nanowires (NWs) that grow in situ on graphitic carbon nitride (g-C3N4). Due to the strong Mott–Schottky effect between PdAg NWs and g-C3N4, the heterojunction enhances the photocatalytic dehydrogenation...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2019-01, Vol.7 (5), p.2022-2026
Main Authors: Liu, Hu, Liu, Xinyang, Yang, Weiwei, Shen, Mengqi, Geng, Shuo, Yu, Chao, Shen, Bo, Yu, Yongsheng
Format: Article
Language:English
Subjects:
Additives
Carbon nitride
Catalysis
Catalysts
Catalytic activity
Charge transfer
Dehydrogenation
Formic acid
Heterojunctions
Hydrogen production
Nanotechnology
Nanowires
Palladium
Photocatalysis
Silver
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Herein, we report the production of a superior Mott–Schottky heterojunction that is based on PdAg nanowires (NWs) that grow in situ on graphitic carbon nitride (g-C3N4). Due to the strong Mott–Schottky effect between PdAg NWs and g-C3N4, the heterojunction enhances the photocatalytic dehydrogenation of formic acid (FA) (TOF = 420 h−1) without additives and under visible light (λ > 400 nm) at 25 °C, which is the best value among all heterogeneous catalysts reported for the photocatalytic dehydrogenation of FA. The H2 production rate is almost constant under the current reaction conditions. Detailed studies reveal that a favorable charge transfer from g-C3N4 and Ag to Pd makes Pd electron-rich, which enhances the catalytic activity and stability of the heterojunction for the photocatalytic dehydrogenation of FA under visible light. Our studies open up a new route to the design of a metal–semiconductor heterojunction for visible light-driven photocatalytic dehydrogenation of FA.
ISSN:2050-7488
2050-7496
DOI:10.1039/c8ta11172c