Abstract
Self-assembled three-dimensional InVO4 microspheres consisting of nanoparticles were synthesized by a facile template-free hydrothermal method. The resulting InVO4 microspheres had high crystallinity, and were of about 4.5μm in diameter. The band-gap energy estimated from the main absorption edges of the UV–vis diffuse reflectance spectrum was 2.4eV. Compared to the same material created via a solid-state reaction method, the InVO4 microspheres exhibited enhanced photocatalytic activities in the degradation of Rhodamine B(RhB) under visible light irradiation, which was mainly attributed to their higher surface area, and improved light-absorbing ability resulting from their unique morphology and variation of their crystal structure.
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