【作者】 谭静； 黄维刚； 涂铭旌；

【Author】 TAN Jing HUANG Wei-gang TU Ming-jing (College of Material Science and Engineering,Sichuan University,Chengdu 610065,China)

【机构】 四川大学材料科学与工程学院；

【摘要】 在无氨水调节 pH 值条件下采用液相沉淀法制备了纳米晶 BiVO₄粉体．通过 XRD、SEM、紫外-可见分光光度计、色差仪和 FITR 等手段综合分析了煅烧前后 BiVO₄相结构和微粒形貌及其光学性能。结果表明：未煅烧的 BiVO₄具有四方相和单斜相两种结构,而 500℃煅烧后为单一的等轴状的单斜相结构。与混合相粉体相比,纯单斜相的 BiVO₄具有较好的光学性能,亮度值81．7、黄品值85．9及色饱和度86．5％。更多还原

【Abstract】 Solution precipitation method without ammonia titration was adopted to synthesize BiVO₄ powder.The crystal structure,particle morphologies and optical properties of the BiVO₄ calcined and not calcined were comprehensively analyzed by means of XRD,SEM,UV-Vis spectrophotometer,colorimeter and FITR.The results indicate that not calcined BiVO₄ powder was consisted of two kinds of phase with monoclinic and tetragonal crystalline.But the only monoclinic phase BiVO₄ was obtained by calcined at 500℃.Compared with the mixed phases powder,pure monoclinic phase BiVO₄ owns good optical properties,such as brightness value of 81.7,yellow value of 85.9 and chroma of 86.5%.更多还原