水热合成温度对Ag_3PO_4形貌及光催化降解染料的影响
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  • 英文篇名:Effect of Hydrothermal Synthesis Temperature on Morphology and Photocatalytic Degradation in Dye of Ag_3PO_4
  • 作者:宋哲 ; 贺益强
  • 英文作者:SONG Zhe;HE Yiqiang;College of Chemistry,Changchun Normal University;
  • 关键词:磷酸银 ; 水热法 ; 温度 ; 形貌 ; 光催化
  • 英文关键词:silver phosphate;;hydrothermal method;;temperature;;morphology;;photocatalysis
  • 中文刊名:JLDX
  • 英文刊名:Journal of Jilin University(Science Edition)
  • 机构:长春师范大学化学学院;
  • 出版日期:2018-01-26
  • 出版单位:吉林大学学报(理学版)
  • 年:2018
  • 期:v.56;No.229
  • 基金:吉林省教育厅“十二五”科学技术研究项目(批准号:[2014]268);; 长春师范大学自然科学基金(批准号:[2009]005;[2010]009)
  • 语种:中文;
  • 页:JLDX201801029
  • 页数:6
  • CN:01
  • ISSN:22-1340/O
  • 分类号:173-178
摘要
在水热反应体系中的不同温度下合成可见光催化剂Ag_3PO_4,并利用X射线衍射(XRD)、扫描电子显微镜(SEM)、Fourier变换红外光谱(FT-IR)对其进行表征,进行光降解实验.结果表明:随着水热反应温度的升高,Ag_3PO_4的粒径逐渐增大,形貌趋于规则;当温度为110℃时,光催化剂Ag_3PO_4表面出现少量Ag_3PO_4基元,随着温度的升高,表面基元增多;Ag_3PO_4降解阳离子染料——罗丹明B(RhB)高于降解阴离子染料——甲基橙(MO)的效率;合成的180-APO在光照20min时降解率最大,MO和RhB的降解率分别达96.45%和99.73%;空穴正离子h+与超氧基负离子·O-2为催化体系中的主要活性基团.
        We synthesized visible light catalyst Ag_3PO_4 under different temperatures in the hydrothermal reaction system.It was characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM)and Fourier transform infrared spectrum(FT-IR),and the photodegradation experiments were carried out.The results show that with the increase of the hydrothermal reaction temperature,the partical size of Ag_3PO_4 increases gradually,and the morphology tends to rule;when the temperature is 110 ℃,a small amount of Ag_3PO_4 primitives are found on the surface of the photocatalyst Ag_3PO_4,and the surface primitives increase with the increase of temperature;efficiency of Ag_3PO_4 degradation of cationic dye—rhodamine B(RhB)is higher than that of degrading anionic dye—methyl orange(MO);the degradation rate of 180-APO is the highest after 20 min exposure to visible light,and the degradation rates of MO and RhB are 96.45% and 99.73%,respectively;the hole positive ions h+and superoxide anion ·O-2 are the main active groups in the catalytic system.
引文
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