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Enhancement of photocatalytic activity of BiVO4 by barium doping
Indian Journal of Chemistry, Section A ( IF 0.412 ) Pub Date : 2020-07-07
Athul Sunny, N. Manikanda Prabu

BiVO4 has been successfully synthesized by solid state method and doped by barium in the sites of bismuth in 3%, 6%, 9% and 15% to form Bi1-xBaxVO4 (x = 0.03, 0.06, 0.09 & 0.15). The products have been characterized using powder X-ray diffraction, diffuse reflectance spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and photoluminescence spectroscopy. The band gap of undoped BiVO4 is calculated to be 2.19 eV and the barium doped BiVO4 compounds exhibit band gaps which are closer to the band gap of undoped compound. The photocatalytic activities of undoped and doped catalysts for the degradation of methylene blue have been studied using UV-visible spectroscopy and found to be depended largely on the barium content and the particle size of the compounds.

中文翻译:

钡掺杂增强BiVO4的光催化活性

BiVO 4已通过固态方法成功合成,并在3%,6%,9%和15%的铋位置掺杂钡,形成Bi 1-x Ba x VO 4(x = 0.03、0.06、0.09& 0.15)。使用粉末X射线衍射,漫反射光谱,扫描电子显微镜,能量色散X射线光谱和光致发光光谱来表征产品。计算出未掺杂的BiVO 4的带隙为2.19 eV,钡掺杂的BiVO 4化合物的带隙更接近未掺杂化合物的带隙。已使用紫外可见光谱研究了未掺杂和掺杂的催化剂对亚甲基蓝降解的光催化活性,发现其很大程度上取决于化合物的钡含量和粒径。
更新日期:2020-07-28
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