L. Pei, T. Wei, N. Lin
Sep 1, 2015
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Journal
Nanomaterials and Energy
Abstract
Manganese (Mn) vanadate nanoneedles have been successfully prepared by way of a simple hydrothermal process using sodium vanadate and Mn chloride as the raw materials, and sodium dodecyl sulfate (SDS) as the surfactant. The samples are characterised by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The Mn vanadate nanoneedles are composed of orthorhombic manganese vanadium oxide (MnV2O5) phase, and the diameter of the tips and length is about 50 nm and 10 μm, respectively. The preparation parameters including SDS concentration, hydrothermal temperature and duration have played important roles in the formation of Mn vanadate nanoneedles. The photocatalytic activities of the Mn vanadate nanoneedles are assessed based on the degradation of rhodamine B (RB) in aqueous solution under solar-light irradiation. The roles of irradiation time, dosage of the Mn vanadate nanoneedles and initial concentration of RB solution in the photocatalytic degradation have been investigated. The RB degradation r...