Photocatalytic selective oxidation of CO with O2 in the presence of H2 over highly dispersed chromium oxide on silica under visible or solar light irradiation

被引：0
|
作者：
Takashi Kamegawa
Masaya Matsuoka
Masakazu Anpo
机构：
[1] Osaka Prefecture University,Department of Applied Chemistry, Graduate School of Engineering
来源：
Research on Chemical Intermediates | 2008年 / 34卷
关键词：
Cr/SiO; photocatalyst; selective oxidation of CO in H; photoluminescence;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A highly dispersed Cr6+-oxide species on silica (Cr/SiO2) was found to act as an efficient photocatalyst for the selective oxidation of CO into CO2 with O2 in the presence of H2 under visible (λ>420 nm) or solar light irradiation at 293 K. UV-Vis, photoluminescence and FT-IR investigations revealed that the selective reactivity of the photoexcited tetrahedral Cr6+-oxide species ([Cr5+−O−]*) with CO, as well as the high reactivity of the photoreduced Cr6+-oxide species (Cr4+-oxide species) with O2 both play significant roles in this reaction.
引用
收藏
页码：427 / 434
页数：7
相关论文
共 50 条
  • [21] Enhanced photocatalytic H2 evolution over micro-SiC by coupling with CdS under visible light irradiation
    Peng, Yuan
    Guo, Zhongnan
    Yang, Jingjing
    Wang, Da
    Yuan, Wenxia
    JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (18) : 6296 - 6300
  • [22] A heterostructured TiO2-C3N4 support for gold catalysts: a superior preferential oxidation of CO in the presence of H2 under visible light irradiation and without visible light irradiation
    Yang, Kai
    Meng, Chao
    Lin, Liuliu
    Peng, Xiaoying
    Chen, Xun
    Wang, Xuxu
    Dai, Wenxin
    Fu, Xianzhi
    CATALYSIS SCIENCE & TECHNOLOGY, 2016, 6 (03) : 829 - 839
  • [23] Assembling polydopamine on TiO2 for visible light photocatalytic selective oxidation of sulfides with aerial O2
    Shi, Ji-Long
    Lang, Xianjun
    CHEMICAL ENGINEERING JOURNAL, 2020, 392
  • [24] Effect of Surface Treatment on the Selective Photocatalytic Oxidation of Benzyl Alcohol into Benzaldehyde by O2 on TiO2 Under Visible Light
    Higashimoto, Shinya
    Okada, Kohei
    Morisugi, Tomoki
    Azuma, Masashi
    Ohue, Hiroyoshi
    Kim, Tae-Ho
    Matsuoka, Masaya
    Anpo, Masakazu
    TOPICS IN CATALYSIS, 2010, 53 (7-10) : 578 - 583
  • [25] Effect of Surface Treatment on the Selective Photocatalytic Oxidation of Benzyl Alcohol into Benzaldehyde by O2 on TiO2 Under Visible Light
    Shinya Higashimoto
    Kohei Okada
    Tomoki Morisugi
    Masashi Azuma
    Hiroyoshi Ohue
    Tae-Ho Kim
    Masaya Matsuoka
    Masakazu Anpo
    Topics in Catalysis, 2010, 53 : 578 - 583
  • [26] Direct production of hydrogen peroxide from H2 and O2 over highly dispersed Au catalysts
    Okumura, M
    Kitagawa, Y
    Yamagcuhi, K
    Akita, T
    Tsubota, S
    Haruta, M
    CHEMISTRY LETTERS, 2003, 32 (09) : 822 - 823
  • [27] Photocatalytic H2 Evolution on CdS Loaded with WS2 as Cocatalyst under Visible Light Irradiation
    Zong, Xu
    Han, Jingfeng
    Ma, Guijun
    Yan, Hongjian
    Wu, Guopeng
    Li, Can
    JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (24): : 12202 - 12208
  • [28] MoS2/Graphene Cocatalyst for Efficient Photocatalytic H2 Evolution under Visible Light Irradiation
    Chang, Kun
    Mei, Zongwei
    Wang, Tao
    Kang, Qing
    Ouyang, Shuxin
    Ye, Jinhua
    ACS NANO, 2014, 8 (07) : 7078 - 7087
  • [29] Photocatalytic H2 evolution under visible-light irradiation on modified TiO2 catalysts
    Liang, Huirong
    Guo, Liejin
    RENEWABLE AND SUSTAINABLE ENERGY II, PTS 1-4, 2012, 512-515 : 1426 - +
  • [30] Photocatalytic activity evaluation of tetragonal CuFe2O4 nanoparticles for the H2 evolution under visible light irradiation
    Yang, Haihua
    Yan, Jianhui
    Lu, Zhouguang
    Cheng, Xiang
    Tang, Yougen
    JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 476 (1-2) : 715 - 719
12345