| 苏琼,张博文,张平,王曌,赵乐,苏小平.化学通报,2023,86(9):1119-1125. |
| Ag3PO4/PBN复合材料的制备及可见光催化性能研究 |
| Preparation of Ag3PO4/PBN composites and study on visible light catalytic properties |
| 投稿时间：2022-12-20 修订日期：2023-04-03 |
| DOI： |
| 中文关键词: 光催化 磷酸银 原位沉淀 多孔氮化硼 降解 热解 |
| 英文关键词:Photocatalysis Silver phosphate Precipitation in situ Porous Boron nitride pyrolysis degradatio |
| 基金项目:国家自然科学基金(21968032,22165025)；甘肃省科技计划项目(20YF8FA045,21YF5GA061)；中央高校基本科研业务费项目(31920220044,31920220031,31920220032)；西北民族大学化学学科创新团队建设项目(1110130139,1110130141)；省级一流专业建设(2019SJYLZY-08) |
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| 中文摘要: |
| 在空气氛围下,900℃热解硼酸-三聚氰胺前驱体制备多孔氮化硼(PBN),然后通过原位沉淀法制备出Ag3PO4/PBN复合光催化剂。利用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、X射线光电子能谱(XPS)、紫外-可见漫反射光谱(UV-Vis DRS)、荧光分光光度计(PL)等方法对复合物的结构和形貌进行分析。以罗丹明B(RhB)为降解底物,对光催化性能进行评价。使用异丙醇(PA)、乙二胺四乙酸二钠(EDTA-2Na)、对苯醌(BQ)和AgNO3捕获.OH、h+、.O2-和e-,对光催化机理进行研究。结果表明, Ag3PO4/PBN在PBN含量为70mg时催化效果最好,在可见光照射10min后,0.03g复合光催化剂对RhB溶液(50ml,30mg/L)降解率达到99.6%,具有优良的降解性能；3次重复实验后,催化剂的催化性能几乎没有发生变化,.OH、h+和.O2-在Ag3PO4/PBN光催化降解过程中起主要作用。 |
| 英文摘要: |
| In air atmosphere, fibrous BN(PBN) was prepared by pyrolysis of boric acid melamine precursor at 900 ℃, and then Ag3PO4/PBN composite photocatalyst was prepared by in-situ precipitation method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV Vis DRS) and fluorescence spectrophotometer (PL) were used to analyze the structure and morphology of the composite. Rhodamine B (RhB) was used as the degradation substrate to evaluate the photocatalytic performance. Isopropanol (IPA), disodium ethylenediaminetetraacetate (EDTA-2Na), benzoquinone (BQ) and AgNO3 were used to capture. .OH, h+, O2- and e-, and the photocatalytic mechanism was studied. The results showed that after 10min of visible light irradiation, Ag3PO4/PBN had the best catalytic effect when the PBN content was 70mg. The degradation rate of substances. After three repeated 0.03g composite photocatalyst to RhB solution (50ml, 30mg/L) reached 99.6%, which had |
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