江西科学
江西科學
강서과학
JIANGXI SCIENCE
2012年
5期
579-583
,共5页
二氧化钛%离子液体%光催化活性%邻硝基苯酚
二氧化鈦%離子液體%光催化活性%鄰硝基苯酚
이양화태%리자액체%광최화활성%린초기분분
Titanium dioxide%Ionic liquid%Photocatalytic activity%O-nitrophenol
以钛酸四正丁酯为原料,以离子液体溴化1-乙基-3-甲基咪唑以为反应介质,制备未掺杂TiO2（TiO2-IL）和钴离子掺杂的纳米TiO2（Co/TiO2-IL）,并用XRD、UV-Vis、光生电流等进行表征。以邻硝基苯酚作为降解目标,在紫外光下研究Co/TiO2-IL的光催化活性。结果表明,Co/TiO2-IL的光催化活性高于没有离子液体的反应介质中制备的Co/TiO2,这表明了离子液体可以提高TiO2的光催化活性。而且,研究了溶液的pH对Co/TiO2-IL催化活性的影响,Co/TiO2-IL在酸性条件下具有更好的光催化活性。
以鈦痠四正丁酯為原料,以離子液體溴化1-乙基-3-甲基咪唑以為反應介質,製備未摻雜TiO2（TiO2-IL）和鈷離子摻雜的納米TiO2（Co/TiO2-IL）,併用XRD、UV-Vis、光生電流等進行錶徵。以鄰硝基苯酚作為降解目標,在紫外光下研究Co/TiO2-IL的光催化活性。結果錶明,Co/TiO2-IL的光催化活性高于沒有離子液體的反應介質中製備的Co/TiO2,這錶明瞭離子液體可以提高TiO2的光催化活性。而且,研究瞭溶液的pH對Co/TiO2-IL催化活性的影響,Co/TiO2-IL在痠性條件下具有更好的光催化活性。
이태산사정정지위원료,이리자액체추화1-을기-3-갑기미서이위반응개질,제비미참잡TiO2（TiO2-IL）화고리자참잡적납미TiO2（Co/TiO2-IL）,병용XRD、UV-Vis、광생전류등진행표정。이린초기분분작위강해목표,재자외광하연구Co/TiO2-IL적광최화활성。결과표명,Co/TiO2-IL적광최화활성고우몰유리자액체적반응개질중제비적Co/TiO2,저표명료리자액체가이제고TiO2적광최화활성。이차,연구료용액적pH대Co/TiO2-IL최화활성적영향,Co/TiO2-IL재산성조건하구유경호적광최화활성。
Cobalt ion doped titanium dioxide nanoparticles (Co/TiO2-IL) were prepared in ionic liq- uid 1-ethyl-3-methylimidazoliurn bromide using n-butyl titanate as raw material, and were character- ized by X-ray diffraction, UV-Vis spectroscopy and photo-generated current. The photocatalytic aci- tivity of Co/TiO2-IL were evaluated by the degradation of o-nitrophenol under UV light illumination. The photoeatalytic activity of Co/TiO2-IL is higher that the samples which is prepared in the reaction media without ionic liquid, indicating that ionic liquid can enhance the photocatalytic acitivity. More- over, the effect of pH on the photocatalytic acitivity of Co/TiO2-IL was investigated and result showed that Co/TiO2-IL exhibits higher photocatalytic acitivity in acidic solution than neutral or alkaline en- vironment.
