WO_(3)/Pt复合薄膜的制备及其光电催化性能  

Preparation and Photoelectrocatalytic Properties of WO_(3)/Pt Composite Film

作　　者：周玉鉴 杨雪 杨继凯 聂德财[2] 于舒睿 肖楠 侯志鹏 赵一铭 王新 王国政[2] 宦克为[2] 刘文新[2] ZHOU Yujian;YANG Xue;YANG Jikai;NIE Decai;YU Shurui;XIAO Nan;HOU Zhipeng;ZHAO Yiming;WANG Xin;WANG Guozheng;HUAN Kewei;LIU Wenxin(Science and Technology on Low-Light-Level Night Vision Laboratory,Xi′an 710065;College of Science,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]微光夜视技术重点实验室,西安710065 [2]长春理工大学理学院,长春130022

出　　处：《光子学报》2021年第3期201-210,共10页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.51502023,11874091);吉林省科技厅研发项目(Nos,20200201077JC,20190701024GH,20180201033GX,20190302125GX);吉林省教育厅项目(Nos.JJKH20181103KJ,JJKH20190588KJ,JJKH20200777KJ)。

摘　　要：导电玻璃作为基底水热法生长了WO_(3)纳米棒,通过电沉积法改变沉积Pt的时间(40 s,80 s,120 s),以WO_(3)纳米棒为基底沉积得到不同的WO_(3)/Pt复合薄膜样品。通过X射线衍射分析和扫描电子显微镜等测试手段将WO_(3)纳米棒薄膜和WO_(3)/Pt复合薄膜样品进行表征。结果表明成功制备了WO_(3)/Pt复合薄膜样品。漫反射结果显示WO_(3)/Pt复合薄膜与WO_(3)薄膜相比具有更强的光吸收。交流阻抗谱显示WO_(3)/Pt复合薄膜与WO_(3)纳米棒薄膜相比增强了电荷转移效率。利用光电流、光电催化对WO_(3)/Pt复合薄膜进行光电性能测试,结果表明WO_(3)/Pt复合薄膜相较于单一WO_(3)薄膜光电流活性更高和光电催化活性更强,并且沉积时间为80 s的WO_(3)/Pt复合薄膜显示最为优异的光电流和光电催化性能。同时,沉积时间为80 s的WO_(3)/Pt复合薄膜的光电催化性能优于其光催化和电催化性能。WO_(3) nano-rods were synthesized on the FTO substrate by hydrothermal method.Pt nanoparticles with different deposition time(40 s,80 s,120 s)was loaded onto WO_(3) nano-rods by an electrodeposition method to prepare WO_(3)/Pt composite film photoanodes.Characterization of samples was conducted by scanning electron microscopy and X-ray diffraction,the results show that the WO_(3)/Pt composite films have been synthesized.Diffuse reflectance spectra show that the WO_(3)/Pt composite film has more strong absorption than pure WO_(3) nano-rods film.Electrochemical impedance spectroscopy shows that the WO_(3)/Pt composite film enhances a charge transfer efficiency compared with pure WO_(3) nano-rods film.The photoelectric properties of the samples were obtained from the photocurrent and the photoelectric catalysis.The WO_(3)/Pt composite film samples have higher photocurrent and photoelectric catalytic(PEC)activity than pure WO_(3),and the sample obtained by depositing for Pt nanoparticles at 80 s(WO_(3)/Pt-80 s)has the highest photocurrent and photoelectric photoelectric catalytic activity.Meanwhile,the photoelectric catalytic activity of WO_(3)/Pt-80s composite film is higher than direct photocatalysis or electric catalysis of WO_(3)/Pt-80s composite film.

关 键 词：WO3 PT 光电流 光电催化 光谱测试 

分 类 号：O643[理学—物理化学]