Abstract
Integrating Ti3C2Tx MXene nanosheets (Ti3C2Tx NSs) as an efficient cocatalyst with MAPbI3 microcrystals results in superior MAPbI3-Ti3C2Tx NS composite photocatalysts for H2 evolution from MAPbI3-saturated HI aqueous solution using visible light. The best MAPbI3 (100 mg)-Ti3C2Tx NS (10 mg) composite exhibits a H2 evolution rate of 63.6 μmol h-1, which is 43 times higher than that of pristine MAPbI3, and a stable H2 evolution activity over a 120 h repeating reaction.
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