空心球形 Bi2 O3／BiOCl复合材料的制备及光催化性能研究

摘要

将Bi2 O3空心球作为前驱体，利用酸腐蚀法得到 Bi2 O3／BiOCl 复合催化剂。以有机染料罗丹明（ RhB）为目标污染物进行可见光催化性能的研究表明，Bi2 O3／BiOCl复合催化剂的光催化活性较Bi2 O3的催化活性有较大的提高，酸腐处理10分钟的Bi2 O3／BiOCl复合光催化剂表现出最好的光催化活性。对降解后溶液的总有机碳测定表明光敏化过程使溶液中80％的罗丹明分解。%Hollow spherical Bi 2 O3/BiOCl heterostructures were fabricated by acid etching using Bi 2 O3 as precursors , which presenting excellent visible -light-responsive activity on photodegradation of rhodamin B ( RhB) .Bi2 O3/BiOCl composite etched for 10 min shows the best performance and the total organic carbon test verifies that about 80% of the RhB was effectively decom-posed via a photosensitization process .