摘要
采用微波合成制备Bi_(2)O_(3)/硅藻土复合催化剂,利用X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FT-IR)、扫描电子显微镜(SEM)和比表面积测定仪(BET)对催化剂的结构、形貌等进行了表征;研究了不同微波条件对合成Bi_(2)O_(3)/硅藻土复合催化材料催化性能的影响;结果表明:氧化铋成功负载在硅藻土上,复合材料比表面积相比单一材料有所增大,在微波条件为140℃、10 min、350 W,催化剂投加量为40 mg,氧化剂H_2O_2用量为6 m L时,对浓度为10mg/L的结晶紫去除率可达97%以上。
Bi_(2)O_(3)/diatomite composite catalyst was prepared by microwave synthesis.X-ray diffractometer(XRD),scanning electron microscope(SEM),Fourier transform infrared spectrometer(FT-IR),and specific surface area analyzer(BET)were applied to the catalyst.The structure and morphology were systematically characterized.The effects of different microwave conditions on the catalytic performance of the synthesized Bi_(2)O_(3)/diatomite composite catalytic materials were studied,and the catalytic performance of the composite materials for degradation of crystal violet was studied under natural light conditions.The results showed that the bismuth oxide was successfully supported on diatomite,and the specific surface area of the composite was increased to improve the catalytic activity of the catalyst.Under microwave conditions of 140℃,10 min,350 W,the dosage of catalyst was 40 mg,and the amount of oxidant H2O2 was 6 m L,the removal rate of crystal violet with a concentration of 10 mg/L reached 7%or more.
作者
周千
王瑞琪
林兵
傅敏
ZHOU Qian;WANG Ruiqi;LIN Bing;FU Min(College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Key Laboratory of New Materials for Catalysis and Environment,Chongqing 400067,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2021年第2期130-135,143,共7页
Journal of Chongqing University of Technology：Natural Science
基金
重庆市教委项目(KJ1600624)
重庆市教育委员会科学技术研究重大项目(KJZD-M201800801)。
关键词
微波合成
硅藻土
氧化铋
湿式催化氧化
microwave synthesis
diatomite
Bi_(2)O_(3)
wet catalytic oxidation
