Preparation and Photocatalytic Activity of ABi2O6/BiOCl (A = Mg, Sr, Ca) Heterojunction

Bulletin of the Korean Chemical Society

Yan Wang¹  Zhenyu Huang² 

[1] Department of Chemistry Wonkwang University Iksan 570749 Korea;Department of Chemistry and Chemical Engineering Hebei Normal University for Nationalities Chengde 067000 China

关键词: ABi2O6;    BiOCl;    Semiconductor;    Heterojunction;    Photocatalytic activity;   

DOI  :  10.1002/bkcs.11542

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

MgBi2O6, CaBi2O6, and SrBi2O6 were successfully synthesized by a substitution reaction of NaBiO3 with MgCl2, CaCl2, and Sr(NO3)2, respectively. Then, ABi2O6/BiOCl (A = Mg, Ca, Sr) heterojunction compounds with different ABi2O6:BiOCl ratios were prepared by treating ABi2O6 with an appropriate amount of HCl. The color of the ABi2O6/BiOCl heterojunction was changed from dark to bright as the amount of BiOCl was increased. The absorbances of the ABi2O6/BiOCl heterojunctions in the visible range were decreased as the ratio of BiOCl became higher. The photocatalytic activities of the heterojunction samples were higher than that of sole ABi2O6 or BiOCl. The highest photocatalytic efficiency was achieved when the ABi2O6:BiOCl ratio was 15:85. The organic pollutant was decomposed completely within 1 h under visible light when the 15:85 catalyst was used. The reactive species in the photocatalytic reaction with the ABi2O6/BiOCl photocatalysts were ·O2‐ and h+ H+.

【 授权许可】

Unknown