Enhanced solar-light driven CO2 conversion using Pt-doped graphitic carbon nitride photocatalyst

The increasing levels of carbon dioxide (CO₂) in our atmosphere demand innovative and efficient methods for its reduction. In this context, we present an advanced solar-driven photocatalyst, Pt-doped graphitic carbon nitride (Pt/g-C₃N₄), specifically engineered for enhanced photoreduction of CO₂. Our findings highlight the dual advantage of Pt/g-C₃N₄: enhanced visible light absorption and electron-hole pair dynamics, ensuring efficient carrier separation. Notably, the CO and CH₄ yields, when employing Pt/g-C₃N₄, surpassed those with the pristine g-C₃N₄ catalyst by factors of 3.1 and 4.3, respectively. Moreover, the Pt/g-C₃N₄ catalyst exhibited consistent high-efficiency of CO₂ conversion over successive cycles, emphasizing the catalyst's robustness. This work underscores the potential of Pt/g-C₃N₄ as a viable tool against escalating CO₂ levels, paving the way for a green and sustainable conversion of this predominant greenhouse gas into beneficial chemicals. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.