BiOX/g-C_(3)N_(4)的制备及其光催化性能的研究进展

石墨相氮化碳(g-C_(3)N_(4))作为一种新型可见光光催化剂,因制备成本低、资源比较丰富和具有良好的光学性质等特点受到研究者的青睐,但作为一种可见光光催化剂,其对可见光的吸收有限,结晶度较低和电荷的分离效率较低严重限制了其在光催化研究领域的应用。BiOX光催化剂的结构独特,具有良好的化学稳定性,是用于能源和环境方面的优良光催化剂,但其可见光吸收能力和光生电荷载体的严重复合限制了其在光催化领域的发展。为改善这些问题,可利用协同作用通过构建异质结形成新型复合光催化剂BiOX/g-C_(3)N_(4)。该文从光催化剂的种类、制备方法、光催化活性、影响因素和催化剂改性等方面介绍BiOX/g-C_(3)N_(4)催化剂的研究进展和取得的成果,并对其现状和改进方面进行讨论。

As a new type of visible light photocatalyst,graphite phase carbon nitride(g-C_(3)N_(4))is favored by researchers because of its low preparation cost,abundant resources and good optical properties,but as a visible light catalyst,its limited absorption of visible light,low crystallinity and low charge separation efficiency seriously limit its application in the field of photocatalysis.Because of its unique structure and good chemical stability,BiOX photocatalyst is an excellent photocatalyst for energy and environment,but its visible light absorption capacity and the serious recombination of photogenerated charge carriers limit its development in the field of photocatalysis.In order to improve these problems,synergy can be used to form a new composite photocatalyst BiOX/g-C_(3)N_(4) by constructing heterojunctions.In this paper,the research progress and achievements of BiOX/g-C_(3)N_(4) catalysts are introduced from the aspects of types of photocatalysts,preparation methods,photocatalytic activity,influencing factors and catalyst modification,and its present situation and improvement are discussed.