化学研究与应用
化學研究與應用
화학연구여응용
CHEMICAL RESEARCH AND APPLICATION
2014年
10期
1597-1602
,共6页
二氧化铈%二氧化钛%碳纳米管%溶胶-凝胶%超临界干燥%光催化
二氧化鈰%二氧化鈦%碳納米管%溶膠-凝膠%超臨界榦燥%光催化
이양화시%이양화태%탄납미관%용효-응효%초림계간조%광최화
CeO2%TiO2%CNTs%sol-gel%SCFD%photocatalytic
以四氯化钛、硝酸铈为原料,以碳纳米管为载体,通过溶胶-凝胶法结合超临界干燥技术制备CeO2-TiO2/MWCNTs复合光催化剂。利用热重分析( TG)、X射线衍射( XRD)、扫描电子显微镜( SEM)、傅里叶红外光谱( FT-IR)等手段对催化剂进行表征。结果表明,超临界干燥避免了催化剂的团聚,TiO2为锐钛矿型,平均粒径为12nm。4h 后对甲基橙、亚甲基蓝和苯酚的降解率分别为99.14%、98.98%、98.56%,TOC 的去除率为73.84%、74.56%、84.82%。
以四氯化鈦、硝痠鈰為原料,以碳納米管為載體,通過溶膠-凝膠法結閤超臨界榦燥技術製備CeO2-TiO2/MWCNTs複閤光催化劑。利用熱重分析( TG)、X射線衍射( XRD)、掃描電子顯微鏡( SEM)、傅裏葉紅外光譜( FT-IR)等手段對催化劑進行錶徵。結果錶明,超臨界榦燥避免瞭催化劑的糰聚,TiO2為銳鈦礦型,平均粒徑為12nm。4h 後對甲基橙、亞甲基藍和苯酚的降解率分彆為99.14%、98.98%、98.56%,TOC 的去除率為73.84%、74.56%、84.82%。
이사록화태、초산시위원료,이탄납미관위재체,통과용효-응효법결합초림계간조기술제비CeO2-TiO2/MWCNTs복합광최화제。이용열중분석( TG)、X사선연사( XRD)、소묘전자현미경( SEM)、부리협홍외광보( FT-IR)등수단대최화제진행표정。결과표명,초림계간조피면료최화제적단취,TiO2위예태광형,평균립경위12nm。4h 후대갑기등、아갑기람화분분적강해솔분별위99.14%、98.98%、98.56%,TOC 적거제솔위73.84%、74.56%、84.82%。
CeO2-TiO2/MWCNTs composite photocatalyst samples were prepared by the sol-gel and Super Critical Fluid Drying ( SCFD) method. The morphology and size,structure of the composite were characterized by using X-ray diffraction( XRD) ,scanning electron microscopy( SEM) and other analytical testing methods. The results showed that anatase type TiO2 was formed with uniform size,the average grain diameter was 12nm. The usage of SCFD method avoided the agglomeration of the photocatalyst. The phtotocat-alytic activity was evaluated by phtotocatalytic degradation of the methyl orange,methylene blue and phneol. The degradation rate were 99. 14%,98. 98%and 98. 56%,TOC removal rate were 73. 84%,74. 56%and 84. 82%.