催化学报 ›› 2016, Vol. 37 ›› Issue (11): 1975-1981.DOI: 10.1016/S1872-2067(16)62519-6

• 论文 • 上一篇    下一篇

电子受体H2O2和O2对TiO2光催化甘油氧化反应中活性氧物种1O2和OH·的影响

Trin Jedsukontorna, Vissanu Meeyoob, Nagahiro Saitoc, Mali Hunsoma,d   

  1. a 朱拉隆功大学科学学院化工系燃料研究中心, 曼谷 10330, 泰国;
    b 马汉科理工大学高级材料与环境研究中心, 曼谷 10530, 泰国;
    c 名古屋大学大学院工学研究科与智能移动协作研究中心, 名古屋, 日本;
    d 朱拉隆功大学石油化学与材料工程卓越中心(PETRO-MAT), 曼谷 10330, 泰国
  • 收稿日期:2016-06-01 修回日期:2016-07-18 出版日期:2016-11-25 发布日期:2016-11-25
  • 通讯作者: Mali Hunsom,Tel:+66(2)2187523-5; Fax:+66(2)2555831; E-mail:mali.h@chula.ac.th

Effect of electron acceptors H2O2 and O2 on the generated reactive oxygen species 1O2 and OH· in TiO2-catalyzed photocatalytic oxidation of glycerol

Trin Jedsukontorna, Vissanu Meeyoob, Nagahiro Saitoc, Mali Hunsoma,d   

  1. a Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;
    b Centre for Advanced Materials and Environmental Research, Mahanakorn University of Technology, Bangkok 10530, Thailand;
    c Graduate School of Engineering & Green Mobility Collaborative Research Center, Nagoya University, Nagoya, Japan;
    d Center of Excellence on Petrochemical and Materials Technology (PETRO-MAT), Chulalongkorn University, Bangkok 10330, Thailand
  • Received:2016-06-01 Revised:2016-07-18 Online:2016-11-25 Published:2016-11-25
  • Contact: Mali Hunsom,Tel:+66(2)2187523-5; Fax:+66(2)2555831; E-mail:mali.h@chula.ac.th

摘要:

在室温条件下研究了电子受体H2O2和O2对TiO2光催化甘油氧化反应中的活性氧物种、甘油转化率和产物分布的影响.当在紫外光辐射和TiO2的体系中不存在电子受体时,只产生HO·自由基.而当在此体系中有电子受体存在时,则产生了HO·自由基和1O2,但它们的浓度不同,这取决于电子受体的浓度.以H2O2为电子受体时甘油转化率的提高大于以O2为电子受体时.甘油转化生成有价值产物的类型则与体系中的活性氧物种浓度有关.

关键词: 甘油氧化, 二氧化钛, 光催化剂, 电子受体

Abstract:

The effect of the electron acceptors H2O2 and O2 on the type of generated reactive oxygen species (ROS), and glycerol conversion and product distribution in the TiO2-catalyzed photocatalytic oxida-tion of glycerol was studied at ambient conditions. In the absence of an electron acceptor, only HO· radicals were generated by irradiated UV light and TiO2. However, in the presence of the two elec-tron acceptors, both HO· radical and 1O2 were produced by irradiated UV light and TiO2 in different concentrations that depended on the concentration of the electron acceptor. The use of H2O2 as an electron acceptor enhanced glycerol conversion more than O2. The type of generated value-added compounds depended on the concentration of the generated ROS.

Key words: Glycerol oxidation, Titanium dioxide, Photocatalyst, Electron acceptor