Wei Du, Chengxin Zhu, Wei Zhang, Qiong Liu, Guangfang Li, Ying Liang and Rong Chen*,
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Pt-Rh Alloy as Highly Efficient Cocatalyst Boosting Photocatalytic Hydrogen Production on TiO2
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 TiO2 (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 TiO2-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.
期刊介绍：
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.
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