CAJ | 학술논문

采用一积沉淀法和两积沉淀法分别制备了Bi2 WO6-ZrO2-TiO2复合催化剂。利用X射线衍射( XRD),N2吸附( BET),傅里叶变换( FT-IR)光谱技术,X光电子能谱( XPS),紫外-可见( UV-Vis)漫反射光谱等分析技术对样品进行了表征。结果显示,两积沉淀法的Bi、W离子存在于催化剂表面,而一积沉淀法是进入催化剂晶格。利用气相苯进行催化剂的紫外和可见光活性实验,结果表明,两积沉淀法制备的复合催化剂活性最高。
채용일적침정법화량적침정법분별제비료Bi2 WO6-ZrO2-TiO2복합최화제。이용X사선연사( XRD),N2흡부( BET),부리협변환( FT-IR)광보기술,X광전자능보( XPS),자외-가견( UV-Vis)만반사광보등분석기술대양품진행료표정。결과현시,량적침정법적Bi、W리자존재우최화제표면,이일적침정법시진입최화제정격。이용기상분진행최화제적자외화가견광활성실험,결과표명,량적침정법제비적복합최화제활성최고。
The composite catalysts Bi2 WO6-ZrO2-TiO2 were prepared by one-step and two-step precipitation methods, respective-ly. The catalysts were characterized by XRD, N2 adsorption-desorption, FT-IR, XPS and UV-Vis diffused reflectance spectrosco-py. The results showed that Bi and W ions were on the surface of the catalysts prepared by two-step precipitation method,while the ions entered into the crystal lattice of the catalyst synthesized by one-step precipitation method. The catalyst Bi2 WO6-ZrO2-TiO2 with two-step precipitation method presented the best photo-catalytic activity of decomposing benzene both under ultraviolet light and vis-ible light.