Plasmonic Enhancement in Water Splitting Performance for NiFe Layered Double Hydroxide‐N10TC MXene Heterojunction

Abstract MXene‐based material has attracted wide attention due to its tunable band gap, high conductivity and impressive optical and plasmonic properties. Herein, a hetero‐nanostructured water splitting system was developed based on N‐doped Ti 3 C 2 (N 10 TC) MXene and NiFe layered double hydroxide (LDH) nanosheets. The oxygen evolution reaction performance of the NiFe‐LDH significantly enhanced to approximately 8.8‐fold after incorporation of N 10 TC. Meanwhile, the Tafel slope was only 58.1 mV dec −1 with light irradiation, which is lower than pure NiFe‐LDH nanosheets (76.9 mV dec −1 ). All results manifested the vital role of the N 10 TC MXene induced plasmonic hot carriers via electrophoto‐excitation in enhancing the full water splitting performance of the as‐prepared system. This work is expected to provide a platform for designing various plasmonic MXenes‐based heterogeneous structures for highly efficient catalytic applications.