Pt-Rh Alloy as Highly Efficient Cocatalyst Boosting Photocatalytic Hydrogen Production on TiO2
Source abstract
Abstract
Photocatalytic hydrogen evolution has emerged as a promising strategy for the sustainable production of hydrogen energy. Herein, a high-performance Pt-Rh alloy cocatalyst was successfully loaded onto commercial TiO 2 (P25) using a solvothermal method. The optimized Pt-Rh alloy-supported P25 catalyst (Pt-Rh/P25) exhibited exceptional photocatalytic hydrogen evolution activity, achieving a remarkable production rate of 23391.0 μmol·g –1 ·h –1 under simulated solar irradiation. This performance represents significant enhancements of 2.14-, 3.60-, and 377.2-fold compared to the Pt/P25, Rh/P25, and bare P25 catalysts, respectively, outperforming most reported TiO 2 -based photocatalytic systems to date. The remarkable photocatalytic performance of Pt-Rh/P25 was attributed to its improved light absorption capacity and enhanced utilization efficiency of photogenerated carriers. Theoretical calculation indicated that Pt-Rh/P25 exhibited optimized *H adsorption free energy, which significantly promoted photocatalytic hydrogen production kinetics. This work highlights the beneficial impact of alloy cocatalysts on enhancing photocatalytic hydrogen evolution activity and offers insights into the rational design of high-performance photocatalysts.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Electrocatalysts for Energy Conversion · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemistry and Environmental Engineering
Wuhan Institute of Technology
State Key Laboratory of New Textile Materials & Advanced Processing
Wuhan Textile University
Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure
Huazhong University of Science and Technology
Institute of Functional Materials
Hubei University of Arts and Science
Funding
Natural Science Foundation of Hubei Province · National Natural Science Foundation of China
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