Abstract With the target of bringing out a sustainable carbon–neutral system, halide perovskite materials have been explored to fulfil the requirements of solar-to-fuel conversion. Herein, formamidinium (CH(NH2)2+) lead bromide quantum dot (FAPbBr3 QD) as a novel of photocatalyst is researched, which exhibits an excellent photostability and the optimum CO yield rate of 181.25 μmol·g−1·h−1 towards photocatalytic CO2 reduction in the mixed solvent of deionized water/ethyl acetate. Furthermore, the kinetic features of exciton bleach and photoluminescence spectra infer that FAPbBr3 QDs have an enough lifetime to separate and transfer charges for adsorbing CO2 molecules, thus facilitating the photocatalytic CO2 reduction. This study puts forward a reliable avenue of organic–inorganic hybrid perovskite materials as efficient photocatalysts to convert CO2 into valuable chemical fuels.

中文翻译：

---

用于光催化 CO2 还原的胶体甲脒溴化铅量子点

摘要 为了实现可持续的碳中和系统，人们探索了卤化物钙钛矿材料以满足太阳能到燃料转换的要求。在此，研究了作为新型光催化剂的甲脒 (CH(NH2)2+) 溴化铅量子点 (FAPbBr3 QD)，其表现出优异的光稳定性和 181.25 μmol·g-1·h-1 的最佳 CO 产率。去离子水/乙酸乙酯混合溶剂中光催化CO2还原。此外，激子漂白剂的动力学特征和光致发光光谱推断 FAPbBr3 QD 具有足够的寿命来分离和转移电荷以吸附 CO2 分子，从而促进光催化 CO2 还原。