Surfactant-free synthesis of ordered 1D/2D NiZn-LDH heterostructure through oriented attachment for efficient photocatalytic CO2 reduction with nearly 100% CO selectivity

Ordered assembly of anisotropic one-dimensional (1D) and 2D nanomaterials is necessary for preparing delicate heterostructures with close contact to alleviate the energy environmental crisis. Here, we exploited oriented attachment, a non-classical growth mechanism, as tool ordered 1D/2D NiZn layered double hydroxide (Ni-Zn LDH) beyond use surfactants. Lattice matching between (101) plane 1D nanoneedles (NNs) (100) nanosheets (NSs) drives spontaneous NiZn-LDH NNs on NSs. Accordingly, oxygen-deficient capable CO2 adsorption is, therefore, well dispersed platform. The generates strong intimate interactions units, enabling efficient transfer photogenerated electrons from NiZn-LDH. heterostructure demonstrates superior photoreduction performance under visible light irradiation, CO yield rate 16,950 µmol g−1 h−1 100% selectivity. findings demonstrate that can be tailored advanced design through attachment alone.