A facile synthesis of novel ε-Fe2O3 grafted 2D h-BN nanostructures for enhanced visible active photocatalytic applications. (8th July 2020) - Mani, Durai
Abstract : Solvothermally synthesized h-BN/ε-Fe2 O3 nanocomposite catalyst exhibited enhanced photocatalytic activity compared to bare h-BN and c-BN catalysts. Abstract : Novel nanostructures of h-BN and ε-Fe2 O3 grafted h-BN (h-BN/ε-Fe2 O3 ) have been synthesized by solvothermal method. The prepared h-BN/ε-Fe2 O3 nanostructures are highly reproducible. XRD analysis confirmed the phase and crystal structure of synthesized h-BN and h-BN/ε-Fe2 O3 nanostructures. The sheet like morphology of the nanostructured h-BN and h-BN/ε-Fe2 O3 are confirmed by SEM, TEM and HRTEM analyses. Moreover, the uniform distributions of ε-Fe2 O3 on the surface of h-BN nanosheets are confirmed by SEM and TEM images. FT-IR and Raman studies are used to identify the functional groups and structure of h-BN and h-BN/ε-Fe2 O3 nanostructures. The optical absorption spectra show a clear red shift in the h-BN/ε-Fe2 O3 nanostructure compared to pure h-BN nanosheets which shows the electronic band structure modification in BN caused by grafting of ε-Fe2 O3 nanoparticles onto the surface of h-BN. The chemical composition of prepared h-BN/ε-Fe2 O3 heterostructure is analyzed by XPS. The photo oxidative performance of pure h-BN and h-BN/ε-Fe2 O3 nanostructure has been studied for oxidative decomposition of formic acid under visible light irradiation. The h-BN/ε-Fe2 O3 nanostructure showed relatively high photo oxidative performance compared to pure h-BN.