Fig. 2From: Efficient Visible-Light Photocatalytic Properties in Low-Temperature Bi-Nb-O System PhotocatalystsTEM images of Bi-Nb-O powders sintered at a 500 °C, b 550 °C, c 600 °C, d 650 °C, e 700 °C, f 750 °C, and g 800 °C for 3 hBack to article page