“…The emergence of vdWHs in the 2D field offers a new way to combine different monolayers for novel electronic, optoelectronic, and photocatalytic applications. 36,37 Some vdWHs based on MXene, AlN, and GaN like MoS 2 /MXene, 38 TiO 2 /Mxenes, 39 MXene/graphene, 40 TMDCs/MXenes, 41 SiS/MXenes, 42 BSe/MXenes, 43 AlGaN/GaN, 44 MoSe 2 /GaN, 45 AlN/GaN, 46 WS 2 /GaN, 47 ZnO/GaN, 48 graphene/AlN, 49 BP/AlN, 50 and AlN/InSe, 51 have already been fabricated for practical device applications. Electronic structure, optical properties and overall water splitting performance of GaN/Hf 2 CO 2 and AlN/Hf 2 CO 2 vdWHs have been investigated in ref.…”