功能材料
功能材料
공능재료
Journal of Functional Materials
2015年
16期
16152-16156
,共5页
氧化石墨烯%TiO2%热还原法%复合材料%光催化
氧化石墨烯%TiO2%熱還原法%複閤材料%光催化
양화석묵희%TiO2%열환원법%복합재료%광최화
graphene oxide%titanium dioxide%thermal reduction method%composite material%photocatalytic per-formance
采用Hummers法制得氧化石墨烯,以钛酸丁酯为钛源,采用原位溶胶‐凝胶技术制备了氧化石墨烯/TiO2复合材料,进一步经过加热还原的方法,制备热还原氧化石墨烯/TiO2复合光催化剂,通过FT‐IR、XRD、Raman、SEM 、TEM 和UV‐Vis光谱等对产物进行了表征,并测试了该复合光催化剂在可见光下对甲基橙的光催化降解性能。结果表明,制备的复合光催化剂主晶相为锐钛矿型TiO2,热还原氧化石墨烯表面富集的颗粒尺寸15 n m左右,颗粒分布均匀。热还原氧化石墨烯/TiO2复合光催化剂在可见光下具有优异的光催化性能。
採用Hummers法製得氧化石墨烯,以鈦痠丁酯為鈦源,採用原位溶膠‐凝膠技術製備瞭氧化石墨烯/TiO2複閤材料,進一步經過加熱還原的方法,製備熱還原氧化石墨烯/TiO2複閤光催化劑,通過FT‐IR、XRD、Raman、SEM 、TEM 和UV‐Vis光譜等對產物進行瞭錶徵,併測試瞭該複閤光催化劑在可見光下對甲基橙的光催化降解性能。結果錶明,製備的複閤光催化劑主晶相為銳鈦礦型TiO2,熱還原氧化石墨烯錶麵富集的顆粒呎吋15 n m左右,顆粒分佈均勻。熱還原氧化石墨烯/TiO2複閤光催化劑在可見光下具有優異的光催化性能。
채용Hummers법제득양화석묵희,이태산정지위태원,채용원위용효‐응효기술제비료양화석묵희/TiO2복합재료,진일보경과가열환원적방법,제비열환원양화석묵희/TiO2복합광최화제,통과FT‐IR、XRD、Raman、SEM 、TEM 화UV‐Vis광보등대산물진행료표정,병측시료해복합광최화제재가견광하대갑기등적광최화강해성능。결과표명,제비적복합광최화제주정상위예태광형TiO2,열환원양화석묵희표면부집적과립척촌15 n m좌우,과립분포균균。열환원양화석묵희/TiO2복합광최화제재가견광하구유우이적광최화성능。
Graphene oxide (GO) was prepared using a modified Hummers method with flake graphite as raw materials ,then the graphene oxide/titanium dioxide (GO/TiO2 ) was synthesized through a in situ sol‐sel meth‐od using tetrabutyl titanium as Ti source ,and themally reduced graphene oxide/TiO2 composite photocatalyst was prepared by annealing under inert atmosphere .The photocatalyst was characterized by FT‐IR ,XRD ,Raman , SEM ,TEM and UV‐Vis spectrophotometry .The photocatalytic degradation of methyl orange using the photo‐catalyst was studied .The results showed that the main phase of products is antase TiO2 ,the TiO2 nanoparticles with the diameter about 15 nm attached on the surface of reduced graphene oxide matrix and formed a layer of dense TiO2 .The composite photocatalyst exhibited a excellent photocatalytic property under visible light region .