Fig. 4From: Efficient Visible-Light Photocatalytic Properties in Low-Temperature Bi-Nb-O System PhotocatalystsPhoto-degradation of MV with respect to the irradiation time using Bi-Nb-O powders exposed to visible light. Adsorption ability of Bi-Nb-O powders is tested after stirring for 1 h in the absence of light to achieve the equilibrium adsorptionBack to article page