石油化工2011，Vol.40Issue(4)：439-443,5.
TiO2纳米光催化剂的低温制备及其性能
Low-Temperature Preparations and Properties of TiO2 Nano-Photocatalysts
摘要
Abstract
Rutile(R) and anatase(A) TiO2 nano-photocatalysts with high specific surface area were prepared by hydrothermal method at low-temperature, and characterized by means of XRD, TEM, HRTEM, UV-Vis DRS and BET. Activities of the prepared nano-photocatalysts were evaluated by decolorization of methyl orange solution under visible light. The performances of the prepared nano-photocatalysts and the commercial TiO2 catalyst ( P25 ) in hydrogen production through water photodecomposition under UV irradiation were investigated. The results showed that TiO2 (R) with rod-like crystalline and TiO2 (A) with hexagon-like crystalline could be prepared with distilled water and anhydrous ethanol as reaction media, respectively. The light absorption of TiO2(R) in the visible light region was stronger than that of P25 according to the UV-Vis DRS results. Under visible light irradiation for 6.0 h, decolorization ratio of methyl orange over TiO2(R) was 72.7% , which was obviously higher than 47. 8 % of P25. Under UV irradiation, the hydrogen production rate of TiO2 (A) reached 24.2μmol/h, slightly lower than 25. 8μmol/h of P25.关键词
二氧化钛光催化剂/光分解水/产氢/甲基橙脱色Key words
titania photocatalyst/water photodecomposition/hydrogen production/methyl orange decolorization分类
化学化工引用本文复制引用
李慧泉,张颖,崔玉民,张文保..TiO2纳米光催化剂的低温制备及其性能[J].石油化工,2011,40(4):439-443,5.基金项目
安徽省科技计划项目(090518026) （090518026）
安徽省高校省级自然科学研究项目(KJ2010A254,KJ2010B149) （KJ2010A254,KJ2010B149）
安徽省高校省级教学研究项目(2010JYXM04,2010JYXM19) （2010JYXM04,2010JYXM19）
阜阳师范学院自然科学研究项目(2008LQ14). （2008LQ14）
