催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (1): 46-50.DOI: 10.1016/S1872-2067(10)60158-1

• 研究论文 • 上一篇    下一篇

纳米 TiO2 光催化萘转化为 α-萘酚

史慧贤 1, 张天永 1,2, 王红亮 3, 王晓 1, 何萌 1   

  1. 1 天津大学化工学院, 天津 300072; 2 福州大学福建省光催化重点实验室, 福建福州 350002; 3 天津大学药物科学与技术学院, 天津 300072
  • 收稿日期:2010-06-28 修回日期:2010-08-24 出版日期:2011-01-13 发布日期:2014-05-22

Photocatalytic Conversion of Naphthalene to α-Naphthol Using Nanometer-Sized TiO2

SHI Huixian1, ZHANG Tianyong1,2,*, WANG Hongliang3, WANG Xiao1, HE Meng1   

  1. 1School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, Fujian, China; 3School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
  • Received:2010-06-28 Revised:2010-08-24 Online:2011-01-13 Published:2014-05-22

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摘要： 研究了共溶剂、电子受体和表面改性等因素对 TiO2 光催化萘直接合成 α-萘酚反应的影响. 纳米 TiO2 催化剂在紫外光照射下产生 •OH, 使得萘羟基化得到 α-萘酚. 在 TiO2 体系中加入 Fe3+, Fe2+, Fe3+ + H2O2和 Fe2+ + H2O2 时, 均可有效提高萘转化率和 α-萘酚收率, 其中以体系中加入 Fe3+ + H2O2 时, α-萘酚收率最大, 为 22.2%. TiO2 经表面改性后所得样品 La-Eu/TiO2, La-Y/TiO2, H3PW12O40/TiO2, H3PMo12O40/TiO2, Fe/TiO2, Ag/TiO2, Cu/TiO2和 N/TiO2, 萘转化率和 α-萘酚收率均有所提高, 其中以 Fe/TiO2 光催化效率最高.

关键词: 二氧化钛, 改性, 光催化, 萘, α-萘酚

Abstract: The effects of various parameters (co-solvents, electron acceptors, and surface modification) on the direct synthesis of α-naphthol from naphthalene using photocatalytic processes were investigated. The •OH radicals generated on UV-illuminated TiO2 photocatalysts led to the direct hydroxylation of naphthalene to α-naphthol. The addition of Fe3+, Fe2+, Fe3+ + H2O2, and Fe2+ + H2O2 greatly increases the conversion of naphthalene and the yield of α-naphthol in TiO2 suspensions. The addition of Fe3+ + H2O2 to a TiO2 suspension increased the yield to 22.2%. Surface modified-TiO2 had a significant influence on the hydroxylation reaction. La-Eu/TiO2, La-Y/TiO2, H3PW12O40/TiO2, H3PMo12O40/TiO2, Fe/TiO2, Ag/TiO2, Cu/TiO2, and N/TiO2 enhanced the conversion and yield more than TiO2. Fe/TiO2 has the highest photocatalytic efficiency among these species.

Key words: titanium dioxide, modification, photocatalysis, naphthalene, α-naphthol