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Updated: Jul 2, 2026

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
Published on: August 17, 2019
Atomically dispersed pt catalysts for hydrogen evolution coupled with selective ethylene glycol oxidation
Wenjing Zhang1, Nan Zhao1, Xuewei Hao1
1Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, Jiangsu 215123, China.
Abstract:
In photocatalytic systems, the coupling of redox reactions plays a significant role in determining overall catalytic performance. However, current research predominantly focuses on individual half-reactions while neglecting the integrated redox system. Herein, we demonstrate an efficient coupling system combining ethylene glycol (EG) oxidation with water reduction for hydrogen evolution using single-atom Pt/TiO2 catalyst. The system simultaneously drives two-electron oxidation of EG to value-added glycolaldehyde and two-electron reduction of water to H2, achieving remarkable photocatalytic performance with glycolaldehyde and hydrogen production rates of 3852 μmol gcat-1 h-1 and 3524 μmol gcat-1 h-1, respectively. Mechanistic studies reveal that single-atom Pt sites regulate the interfacial charge distribution of TiO2, thereby facilitating EG oxidation and promoting electron accumulation on adjacent Ti sites for H2O reduction to hydrogen. This work not only provides fundamental insights into the design principles of coupled redox systems but also establishes a theoretical framework for single-atom catalysts in synergistic photocatalytic reactions.
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