【作者】 徐力； 卜凡兴； 胡鸣； 姜继森；

【Author】 Li Xu;Fan-Xing Bu;Ming Hu;Ji-Sen Jiang;Department of Physics,Center for Functional Nanomaterials and Devices,East China Normal University;

【机构】 华东师范大学纳米功能材料与器件应用研究中心；

【摘要】 作为一种新型的功能材料,Bi₂O₃在半导体催化,超导,光电材料,电子陶瓷粉体材料等领域的作用,在近几年受到材料学界研究者的关注。^[1-3]但传统的纯相Bi₂O₃在实际应用方面,特别是光催化剂领域相对于其他半导体催化剂仍表现不足。因此提高Bi₂O₃的催化效率是目前重要的研究课题,这对于Bi₂O₃的应用具有重要意义。铋钴类普鲁士蓝（Bi-Co PBA）可作为目标产物Bi₂O₃的前驱物,在向其热转化的过程中可实现Co³⁺的引入,改善其光催化性能。本工作以Bi₂O₃作为目标产物利用室温沉淀法来合成的Bi-Co PBA,在一定温度条件下煅烧得到了纯相的Bi_2-xCo_xO₃（图1-a）。对比XRD标准卡和EDS确定产物为高比例Co³⁺掺杂的Bi_2-xCo_xO₃,掺杂比例为x≈0.5（图1-b）。Co³⁺的引入使得Bi₂O₃的具有微弱的铁磁性（图1-c）,并使Bi₂O₃的吸收峰发生了红移,且在整个可见光范围都有吸收作用（图1-d）。通过对比商业Bi₂O₃,在对于有机物罗丹明B的光催化效果方面,样品表现出了相对较好的降解性能。更多还原

【Abstract】 As a new type of material,Bi₂O₃ has a good performance on semiconductor catalysis,superconductivity,photoelectric material,electronic ceramic powder materials and other fields,which is paid attention by researchers in recent years.But compare to other semiconductor materials,the traditional pure Bi₂O₃ is still insufficient in practical applications,especially photocatalyst field.So it is one of the important research topics to improve the catalytic efficiency of B₂O₃,which is great significance for multi-functional Bi₂O₃.As the precursor of Bi₂O₃,Bismuth-containing Prussian blue analogous（Bi-Co PBA）,the doping of Co³⁺ can be realized in the progress of thermal conversion,and improve the photocatalysis performance.In this work,we choice the Bi₂O₃ as the target product and have synthetize the Bi-Co PBA with precipitation method successfully.And then we can get phase-pure Bi_2-xCo_xO₃ after calcination（Fig.1 a）.It is identified as Bi_2-xCo_xO₃ with high doping ratio（x≈0.5） by XRD and EDS（Fig.1 b）.As shown in（Fig.1 c）,Co-doping realized the magnetization of Bi₂O₃.The absorption peak of Bi₂-_xCo_xO₃ is occurred a red shift,and it has an absorption in the whole visible light range（Fig.1 d）.By compared with the commercial Bi₂O₃,the sample Bi_2-xCo_xO₃ shows a relatively good performance in the degradation effect of Rhodamine B.更多还原