不同质量聚乙烯吡咯烷酮对Cu_(2)O结构的影响  

Effect of Polyvinylpyrrolidone with Different Masses on Structure of Cu_(2)O

作　　者：刘杨 陈蕊[1] 张梦园 戴支正 穆伟 于鹏程 王丽丽[1] 程岩 LIU Yang;CHEN Rui;ZHANG Mengyuan;DAI Zhizheng;MU Wei;YU Pengcheng;WANG Lili;CHENG Yan(College of Science,Changchun University,Changchun 130022,China;College of Life Sciences,Jilin Agricultural University,Changchun 130118,China)

机构地区：[1]长春大学理学院,长春130022 [2]吉林农业大学生命科学学院,长春130118

出　　处：《吉林大学学报（理学版）》2023年第2期407-412,共6页Journal of Jilin University:Science Edition

基　　金：吉林省科技发展计划项目(批准号:20200201023JC,YDZJ202201ZYTS682,20210509044RQ);吉林省教育厅科学技术研究规划项目(批准号:JJKH20210612KJ);吉林省发改委产业技术研究与开发项目(批准号:2023C028-9);长春市科学技术局关键技术攻关专项-民生科技领域项目(批准号:21ZGM09).

摘　　要：以抗坏血酸为还原剂,通过低温水相法合成Cu_(2)O晶体,调控表面活性剂聚乙烯吡咯烷酮(PVP)的质量,制备不同样品,并采用X射线衍射仪、扫描电子显微镜、紫外-可见分光光度计、Fourier变换红外光谱仪对样品的结构和形貌进行表征.实验结果表明:增加PVP质量可改变Cu_(2)O晶体形貌,提高其(111)/(200)晶面的暴露比;(111)晶面和(200)晶面间形成的晶面异质结可增大光催化过程中光生电子和空穴对的分离能力,从而提高Cu_(2)O晶体的光催化效率;球型Cu_(2)O晶体可作为化合物合成的模板.Using ascorbic acid as reducing agent,Cu_(2)O crystal was synthesized by low temperature aqueous phase method,and the different samples were prepared by controlling the mass of surfactant polyvinylpyrrolidone.The structure and morphology of the samples were characterized by X-ray diffraction,scanning electron microscope,ultraviolet visible spectrophotometer and Fourier transform infrared spectroscopy.The experimental results show that increasing the mass of PVP can change the crystal morphology and increase the exposure ratio of(111)/(200)crystal surface.The crystal plane heterojunction formed between(111)and(200)crystal planes can enhance the separation ability of photogenerated electrons and hole pairs in the photocatalytic process,thus imporving the photocatalytic efficiency of Cu_(2)O crystal.Spherical Cu_(2)O crystal can be used as templates for the compound synthesis.

关 键 词：低温水相法 PVP质量 (111)/(200)晶面的暴露比 

分 类 号：O471.4[理学—半导体物理]