磁纳米复合光催化剂的制备及催化性能研究  

Preparation and Performance of Magnetic Nano-composite Photocatalysts

作　　者：薄新党 柴凤兰 张帆 黄斌 Bo Xindang;Chai Fenglan;Zhang Fan;Huang Bin(School of Chemical Engineering,Henan Technical Institution,Henan,450042;School of Chemical Engineering and Environment,Henan University of Technology,Henan,450001)

机构地区：[1]河南应用技术职业学院化学工程学院,河南450042 [2]河南工业大学化学工程与环境学院,河南450001

出　　处：《当代化工研究》2024年第23期182-184,共3页Modern Chemical Research

基　　金：河南省高等学校重点科研项目“磁纳米颗粒Fe3O4@SiO2固载酶的制备及应用研究”(项目编号:22B150007);开封市重点研发专项“畜禽绿色养殖天然药物的开发与应用研究”(项目编号:2202003);河南应用技术职业学院创新人才项目“秸秆等杂木木醋液制备工艺及应用研究”(项目编号:2021-RC-01)。

摘　　要：采用浸渍-水热联合法合成了磁纳米复合光催化剂Bi_(2)WO_(6)@Fe_(3)O_(4),通过傅里叶转换红外光谱仪(FT-IR)、X射线衍射仪(XRD)、扫描电镜(SEM)、振动样品磁强计(VSM)和电感耦合等离子体发射光谱仪(ICP-OES)等方法对结构和性能进行了表征。结果表明,复合光催化剂Bi_(2)WO_(6)@Fe_(3)O_(4)为尺寸均匀的球形,粒径小于10nm,钨酸铋的负载量为7.0%,具有较强的超顺磁性。以亚甲基蓝为底物,探究了磁纳米复合光催化剂的催化性能,结果表明,60min内亚甲基蓝的降解率达到90.5%,磁回收催化剂重复使用4次,催化活性基本保持。Magnetic nano-composite photocatalyst Bi_(2)WO_(6)@Fe_(3)O_(4)by impregnation-hydrothermal.The structure and properties of the samples were characterized by Fourier transform infrared spectrometry(FT-IR),X-ray diffraction(XRD),scanning electron microscopy(SEM),vibrating sample magnetometry(VSM),inductively coupled plasma optical emission spectroscopy(ICP-OES).The results showed that the composite photocatalyst Bi_(2)WO_(6)@Fe_(3)O_(4)was a uniform spherical shape with a particle size of less than 10 nm.Bi_(2)WO_(6)@Fe_(3)O_(4)loading 7.0%bismuth tungstate have strong superparamagnetic properties.The degradation performance of the magnetic nano-composite photocatalyst was investigated using methylene blue(MB)as the substrate,and the results showed that the degradation rate of methylene blue reached 90.5%within 60 min.The recovered catalyst by magnetic precipitation was reused for four times,and the catalytic activity for MB degradation was basically maintained.

关 键 词：磁纳米颗粒 光催化剂 钨酸铋 

分 类 号：TQ426[化学工程]