水热法制备Bi_3O_4 Cl及其光催化降解罗丹明B的研究

Study on preparation of Bi_3 O_4 Cl by hydrothermal synthesis and photocatalytic degradation of Rhodamine B

以硝酸铋为铋源,通过一锅法水热制备新型铋基光催化剂Bi3O4Cl。采用X射线衍射(XRD)、扫描电子显微镜(SEM)和紫外可见漫反射(UV-Vis DRS)手段对所制备的样品进行表征,同时以罗丹明B为目标降解物研究Bi3O4Cl的光催化性能。光催化降解结果表明:水热温度对光催化效率影响较大,水热温度为90℃制备的Bi3O4Cl样品具有较高的光催化效率,这主要是由于其具有较小的禁带宽度和对目标分子较好的吸附能力引起的。本实验提供了一种新型光催化剂Bi3O4Cl的制备方法,有助于促进光催化技术在环境污染控制领域的应用与发展。

Abstract： PhotocatalystBi3O4Cl was successfully prepared using Bi（ NO3 ）3 · 5H2O as a bismuth source through one - pot hydrothermal method. The as - synthesized samples were characterized such as XRD, SEM, and UV -Vis DRS and took Rhodamine B as target degradation subs by the means tance to study the property of photocatalyst of Bi3O4Cl. The result indicated that the photocatalytic efficiency is greatly affected by hydrothermal temperature, and the sample Rhodamine B synthesized at hydrothermal tempera- ture 90 ℃ exhibits satisfactory photodegradation performances, witch mainly attributes to small band width and strong adsorption ability on RhB. The experiment provides a kind of new novel method of photo- catalystBi3O4Cl and contribute to the application and development of photocatalyst technology in control field of environment pollution.