| 丁延伟,范崇政,吴缨,张学玉,金辉.纳米TiO2光催化降解CH3OH、HCHO及HCOOH反应的研究[J].分子催化,2002,(3):175-180 |
| 纳米TiO2光催化降解CH3OH、HCHO及HCOOH反应的研究 |
| Research on Photocatalytic Degradation of Methanol,Formaldehyde and Formic Acid with Nanoscale TiO2 |
| 修订日期：2001-09-10 |
| DOI： |
| 中文关键词: 光催化降解 CH3OH HCHO HCOOH 纳米二氧化钛 气相色谱 中间产物 反应机理 有机污染物 甲醇 甲醛 甲酸 光催化剂 |
| 英文关键词:Nanoscale TiO-2,Photocatalysis,Gas chromatograph,Intermediate |
| 基金项目: |
| 丁延伟 范崇政 吴缨 张学玉 金辉 |
| [1]中国科学技术大学化学物理系，安徽合肥230026 [2]合肥联合大学化学生物工程系，安徽合肥230022 |
| 摘要点击次数: 1681 |
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| 中文摘要: |
| 以纳米TiO2为催化剂，采用主波长为364nm的汞灯为光源，分别研究了浓度为0.1mol/L的甲醇、甲醛和甲酸水溶液的光催化氧化反应速率，用TEM、XRD、SSA和FT-IR对催化剂进行了表征，通过气相色谱测定反应物和生成物的浓度变化。并用Langmuir-Hinshelwood方程进行计算，证明该组反应均为零级反应，根据红外光谱的检测结果，提出了甲醇光催化的反应机理。 |
| 英文摘要: |
| Nanoscale TiO-2 was used as the photocatalyst in the oxidation of methanol, formaldehyde, and formic acid with the concentration of 1% aqueous solution, respectively. Mercury lamp with the main wavelength of 364 nm was adopted as the light source. From the change of the concentration of the reactant and product detected by gas chromatography, it was proved that the reaction order of the group was zero order and the Langmuir-Hinshelwood equation also confirmed the conclusion. TiO-2 was characterized by TEM, XRD, SSA and FT-IR, respectively. The infrared spectra of TiO-2 before and after reaction showed that the mechanism of oxidation of methanol was:CH-3OHHCHOHCOOHCO-2+H-2O |
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