Fe_(3)O_(4)/GO/Ag_(3)PO_(4)三元光催化剂的制备及其光催化性能研究  

Preparation and photocatalytic properties of Fe_(3)O_(4)/GO/Ag_(3)PO_(4)ternary photocatalyst

作　　者：屈沅治 杜国勇[2] 程荣超 王韧 杨月 QU Yuan-zhi;DU Guo-yong;CHENG Rong-chao;WANG Ren;YANG Yue(CNPC Engineering Technology R&D Company Limited,Beijing 102206,China;College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中国石油集团工程技术研究院有限公司,北京102206 [2]西南石油大学化学化工学院,四川成都610500

出　　处：《应用化工》2021年第11期2963-2967,2973,共6页Applied Chemical Industry

基　　金：国家科技重大专项(2016ZX05040-003);中国石油集团科研项目(2018A-3907)。

摘　　要：采用改进Hummers方法制备氧化石墨烯GO和离子交换法制备Ag_(3)PO_(4),并通过硅烷偶联剂KH560的引入合成磁性三元光催化材料Fe_(3)O_(4)/GO/Ag_(3)PO_(4)。利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)等手段对目标复合三元光催化剂进行表征;以罗丹明B作为降解染料,做了光催化的性能评价;以乙二胺四乙酸二钠(Na_(2)-EDTA)、异丙醇(IPA)和对苯醌(BZQ)作为h^(+)、·OH和O_(2)·的捕获剂,对光催化机理进行研究。结果表明,该方法合成步骤简单,通过表征等方法证明了Fe_(3)O_(4)/GO/Ag_(3)PO_(4)三元复合材料的合成并具有良好的磁性,提高了回收利用的价值;在200 W钨丝灯的照射下,对30 mg/L的罗丹明B进行降解,90 min后降解效率可达95%左右,降解效率比纯Ag_(3)PO_(4)降解效率提高了34%。Graphene oxide GO was prepared by the improved Hummers method,Ag_(3)PO_(4)was prepared by the ion exchange method,and the magnetic ternary photocatalyst Fe_(3)O_(4)/GO/Ag_(3)PO_(4)was synthesized by the introduction of the silane coupling agent KH560.Scanning electron microscope(SEM),X-ray diffractometer(XRD),X-ray photoelectron spectroscopy(XPS)and other methods were used to characterize the composite ternary photocatalyst;Rhodamine B was used as a degradation dye to perform photocatalytic performance evaluation;Study on the photocatalytic mechanism by using disodium ethylenediamine tetraacetate(Na_(2)-EDTA),isopropyl alcohol(IPA)and p-benzoquinone(BZQ)as capture agents for h^(+),·OH and O_(2)·.The results show that the method has simple synthesis steps.The characterization of Fe_(3)O_(4)/GO/Ag_(3)PO_(4)ternary materials has been demonstrated through characterization and has good magnetic properties,which enhances the value of recycling.Under the irradiation of a 200 W tungsten filament lamp,the degradation efficiency of 30 mg/L Rhodamine B was 95%after 90 min.The degradation efficiency was 34%higher than that of pure Ag_(3)PO_(4).

关 键 词：三元催化剂 光催化 罗丹明B 硅烷偶联剂 

分 类 号：TQ426[化学工程]