What question did this study set out to answer?

The goal is to investigate the trade-offs between photothermal and excitonic effects in TiO2/BiCuSeO heterojunctions to improve solar-driven hydrogen production.

April 23, 2026

Photothermal–Excitonic Trade-Off in TiO2/BiCuSeO Heterojunctions for Optimal Solar-Driven Hydrogen Production

Key Points

The goal is to investigate the trade-offs between photothermal and excitonic effects in TiO2/BiCuSeO heterojunctions to improve solar-driven hydrogen production.
Designed and synthesized TiO2/BiCuSeO heterojunctions.
Evaluated photocatalytic performance under solar illumination.
Analyzed the interplay of excitonic and thermal effects on hydrogen evolution.
Demonstrated significant enhancement in hydrogen production compared to pure TiO2.
Found optimal excitonic contributions at specific compositions of BiCuSeO.
Indicated successful utilization of wider solar spectrum for photocatalytic activity.

Abstract

Photocatalytic hydrogen production driven by solar energy presents a promising route for sustainable energy conversion. However, the benchmark photocatalyst TiO2 is constrained by limited harvest of visible and infrared (IR)...

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