| 李曹龙,上官文峰.TiO2(B)纳米带光催化剂的制备及分解水产氢性能[J].分子催化,2015,(4):382-389 |
| TiO2(B)纳米带光催化剂的制备及分解水产氢性能 |
| Synthesis of TiO2(B) nanobelts photocatalyst for Water Splitting into H2 |
| 投稿时间：2015-06-29 修订日期：2015-08-24 |
| DOI： |
| 中文关键词: 水热，TiO2(B)纳米带，光催化，水分解，氢 |
| 英文关键词:Hydrothermal TiO2 (B) nanobelts photocatalysis water splitting Hydrogen |
| 基金项目: |
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| 摘要点击次数: 2113 |
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| 中文摘要: |
| 经过钛酸四丁酯强碱溶液中水解→水热→质子交换→焙烧路线制备出TiO2(B)纳米带。采用HRTEM、FESEM、XRD、UV-Vis、BET和光解水产氢反应等对催化材料的微观表面结构、光吸收性能以及光催化性能进行了研究。结果表明：该路线制备的TiO2(B)纳米带反应条件温和，便于大批量合成。通过改变实验参数实现晶型结构和微观形貌的调变，且不同晶型结构和微观形貌的材料进行光催化分解水产氢活性对比，它们的活性顺序为：NaxH2-xTi3O7.nH2纳米管 > TiO2(B) >TiO2(anatase)> Na2Ti6O13，表明TiO2(B)纳米带是一类较好的光催化分解水制氢半导体材料。提出了TiO2(B)纳米带的可能经历了Na2Ti3O7 → H2Ti3O7 → H2Ti6O13 → H2Ti12O25 → TiO2(B)的形成过程。 |
| 英文摘要: |
| TiO2(B) nanobelts had been synthesized in highly yield and middle conditions via a simple route including tetrabutyl titanate hydrolysis in an alkali solution → hydrothermal → proton-exchange → roasting. Morphological evolution and crystalline structure transmission were also achieved by just controlling the experiment parameters. HRTEM, FESEM, XRD, UV-vis, BET and photo-stimulated surface reaction technology were used to investigate the surface structure, photo absorption property and photocatalytic performance of TiO2(B). The photocatalytic properties for H2 production were systematically tested. The results were shown that the photocatalytic activity followed the sequence: NaxH2-xTi3O7.nH2 nanowires > TiO2(B) > TiO2(anatase) > Na2Ti6O13. The obtained Ti2O(B) displayed relative excellent photocatalytic properties for H2 production. It was revealed that the morphology and crystalline structure phase played important roles in the photocatalytic reaction. In addition, a possible growth mechanism of TiO2(B) involving Na2Ti3O7 → H2Ti3O7 → H2Ti6O13 → H2Ti12O25 → TiO2(B) was proposed based on the structure examination. |
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