@article{Fang2026, 
author = {Li Fang and Guiyu Huang and Yingjie Jiang and Xingyu Li and Qin Zhang and Jiayu Song and Xuanyi Hu and Yufei Liu and Chungui Tian and Dongxu Wang and Jiancong Liu},
title = {Light-enhanced hydrogen spillover on Pt/TiO2 catalysts for efficient flow reverse water-gas shift reaction },
year = {2026},
journal = {Nano Research},
keywords = {light-enhanced hydrogen spillover, charge redistribution, Pt/TiO2, reaction pathway modulation, reverse water-gas shift},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94909045},
doi = {10.26599/NR.2026.94909045},
abstract = {Hydrogen spillover is a key process governing the efficiency and selectivity of CO2 hydrogenation reactions. Although various static catalyst structural design strategies have been developed for promoting this process, this dynamic regulation by external stimuli has rarely been achieved. Herein, we demonstrate the light-enhanced hydrogen spillover on Pt/TiO2 and its critical role in catalyst regulation and performance enhancement for RWGS. Under light irradiation, photogenerated electrons transfer from TiO2 to Pt, making Pt electron-rich to promote H2 dissociation, while hole on TiO2 surface promote active hydrogen migration. This synergistic charge redistribution induces a light-enhanced hydrogen spillover, creating abundant oxygen vacancies and delivering more active hydrogen. Consequently, light-driven RWGS process proceeds via a *HCOO-mediated pathway, different from the thermal-driven process. Using light as the sole energy source (2.5 W/cm2), Pt/TiO2 catalyst achieves a CO production rate of 30.51 mol·gPt−1·h−1 with 99.12% CO selectivity in a continuous-flow system at a mild catalyst surface temperature (283 °C), outperforming most thermal and photothermal catalysts. Remarkably, comparable performance is achieved using only concentrated sunlight even under outdoor temperature of −20.7 °C. This work establishes a new paradigm for dynamic charge transfer controlling spillover effects in solar-driven catalysis.}
}