分子催化
分子催化
분자최화
JOURNAL OF MOLECULAR CATALYSIS(CHINA)
2007年
3期
245-248
,共4页
SO-42-/TiO-2-WO-3%超强酸%光催化氧化%邻硝基苯酚
SO-42-/TiO-2-WO-3%超彊痠%光催化氧化%鄰硝基苯酚
SO-42-/TiO-2-WO-3%초강산%광최화양화%린초기분분
SO42-/TiO2-WO3%Superacid%Photocatalytic oxidation%orth-nitrophenol
采用不同浓度的硫酸溶液浸渍处理TiO2-WO3,制得不同SO42-/TiO2-WO3光催化剂.考察了光催化剂对邻硝基苯酚溶液的光催化行为.发现SO42-/TiO2-WO3的光催化活性高于TiO2-WO3的光催化活性,浸渍液中H2SO4的浓度对SO42-/TiO2的催化活性有一定的影响,H2SO4溶液的最佳浓度为0.2 mol/L,最佳焙烧温度为550℃.最佳WO3的掺杂量w(WO3)为3%.催化降解过程符合一级动力学规律.
採用不同濃度的硫痠溶液浸漬處理TiO2-WO3,製得不同SO42-/TiO2-WO3光催化劑.攷察瞭光催化劑對鄰硝基苯酚溶液的光催化行為.髮現SO42-/TiO2-WO3的光催化活性高于TiO2-WO3的光催化活性,浸漬液中H2SO4的濃度對SO42-/TiO2的催化活性有一定的影響,H2SO4溶液的最佳濃度為0.2 mol/L,最佳焙燒溫度為550℃.最佳WO3的摻雜量w(WO3)為3%.催化降解過程符閤一級動力學規律.
채용불동농도적류산용액침지처리TiO2-WO3,제득불동SO42-/TiO2-WO3광최화제.고찰료광최화제대린초기분분용액적광최화행위.발현SO42-/TiO2-WO3적광최화활성고우TiO2-WO3적광최화활성,침지액중H2SO4적농도대SO42-/TiO2적최화활성유일정적영향,H2SO4용액적최가농도위0.2 mol/L,최가배소온도위550℃.최가WO3적참잡량w(WO3)위3%.최화강해과정부합일급동역학규률.
The photocatalysts of SO42-/TiO2-WO3 with different loading of SO42-anion from different concentration of H2SO4 were prepared.The photocatalytic effect of the photocatalysts on orth-nitrophenol was investigated.It was found that the photocatalytic activity of SO42-/TiO2-WO3 was higher than that of TiO2-WO3.The catalytic activity of SO42-/TiO2-WO3 depends on the sulfuric acid concentration and the best sulfuric acid concentration, calcination temperature and doping of tungsten oxide were 0.2 mol.L-1, 550 ℃ and w(WO3)=3%, respectively. The experimental results showed that the degradation rate of orth-nitrophenol approximately follows the first order kinetics.
