催化学报 ›› 2017, Vol. 38 ›› Issue (4): 636-650.DOI: 10.1016/S1872-2067(17)62766-9

• 论文 • 上一篇    下一篇

超临界合成Pt修饰的TiO2用于光催化CO2还原制备太阳能燃料

Susana Tostón, Rafael Camarillo, Fabiola Martínez, Carlos Jiménez, Jesusa Rincón   

  1. 亚拉曼查大学环境科学与生物化学学院化工系, 托莱多 45071, 西班牙
  • 收稿日期:2016-11-21 修回日期:2016-12-21 出版日期:2017-04-18 发布日期:2017-04-12
  • 通讯作者: Rafael Camarillo
  • 基金资助:

    西班牙政府基金项目(CTM2011-26564);卡斯蒂利亚-拉曼恰地方政府基金项目(PEⅡ10-0310-5840);伊维尔德罗拉公司基金资助(能源及环境研究科研基金2010/12forSusanaTostón).

Supercritical synthesis of platinum-modified titanium dioxide for solar fuel production from carbon dioxide

Susana Tostón, Rafael Camarillo, Fabiola Martínez, Carlos Jiménez, Jesusa Rincón   

  1. University of Castilla-La Mancha, Department of Chemical Engineering, Faculty of Environmental Sciences and Biochemistry, Avda. Carlos Ⅲ, s/n, 45071 Toledo, Spain
  • Received:2016-11-21 Revised:2016-12-21 Online:2017-04-18 Published:2017-04-12
  • Supported by:

    This work was supported by Spanish Government (Project CTM 2011-26564), Regional Government of Castilla-La Mancha (Project PEⅡ10-0310-5840), and Iberdrola Foundation (Research Grant in Energy and the Environment 2010/12 for Susana Tostón).

摘要:

考察了超临界条件下合成TiO2基光催化剂的性质,尤其是在超临界CO2下得到的分散在TiO2上Pt的特性,并与商品化TiO2性能进行了比较.另外,所得催化剂的光催化活性用CO2光还原制太阳能燃料进行了评价.结果表明,该催化剂可得到具有比商用TiO2更好或类似的性能(高比表面积、结晶度、表面羟基浓度,大的孔容、增强的可见光吸收、高的甲烷生成速率)而用于CO2还原制备燃料的反应中.这可归因于该催化剂超临界介质合成过程.

关键词: 二氧化钛, 铂, 光催化剂, 金属分散度, 光还原二氧化碳

Abstract:

This paper investigates the properties of TiO2-based photocatalysts synthesised under supercritical conditions. Specifically, the characteristics of Pt dispersed on TiO2 catalysts obtained in supercritical CO2 are discussed and compared with those of commercial TiO2. The photocatalytic activity of the synthesised catalysts in the CO2 photoreduction reaction to produce solar fuel is tested. The main conclusion of the study is that photocatalysts with better or similar features, including high surface area, crystallisation degree, hydroxyl surface concentration, pore volume, absorbance in the visible range and methane production rate, to those of commercial TiO2 may be produced for the reduction of CO2 to fuel by synthesis in supercritical media.

Key words: Titanium dioxide, Platinum, Photocatalyst, Metal dispersion, Carbon dioxide photoreduction