Dynamics of Adsorbed CO Molecules on the TiO2 Surface under UV Irradiation

被引：0
|
作者：
Bulanin, Kirill M. M. [1 ,2 ]
Emeline, Alexei V. V. [1 ]
Mikhaylov, Ruslan V. V. [1 ]
Mikheleva, Alena Y. Y. [1 ]
Rudakova, Aida V. V. [1 ]
Ryabchuk, Vladimir K. K. [1 ]
机构：
[1] St Petersburg State Univ, Lab Photoact Nanocomposite Mat, St Petersburg 198504, Russia
[2] Irkutsk Natl Res Tech Univ, Inst Quantum Phys, Irkutsk 664074, Russia
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2023年 / 127卷 / 23期
关键词：
HETEROGENEOUS PHOTOCATALYSIS; CARBON-MONOXIDE; METAL-OXIDES; SPECTROSCOPIC CHARACTERIZATION; TITANIUM-DIOXIDE; POINT-DEFECTS; ADSORPTION; REDUCTION; WATER; PHOTOADSORPTION;
D O I：
10.1021/acs.jpcc.3c00757
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, the UV-stimulated processesin the TiO2-COg system were exploredby in situ FTIRspectroscopyand photoelectron spectroscopy. Kinetic dependences of the total bandintensity for adsorbed CO and background absorption, as well as thepositions of the Fermi level in TiO2 before, during, andafter UV irradiation of the system, were analyzed and compared. Theobserved reversible shift in the adsorption-desorption equilibriumwas explained by changing the electronic state of the photocatalystunder UV irradiation. The proposed mechanism of photostimulated COadsorption and CO re-adsorption in the TiO2-COg system is described in detail. A deflection of reversibilityof molecular photodesorption-re-adsorption dynamics is causedby the side reaction of CO photooxidation and the formation of stronglybound surface carbonates.
引用
收藏
页码：11005 / 11013
页数：9
相关论文
共 50 条
  • [21] TiO2 pillared montmorillonite as a photoactive adsorbent of arsenic under UV irradiation
    Li, Yuan
    Liu, Jing Rong
    Jia, Shao Yi
    Guo, Jing Wei
    Zhuo, Jian
    Na, Ping
    CHEMICAL ENGINEERING JOURNAL, 2012, 191 : 66 - 74
  • [22] Chlorobenzene degradation assisted by TiO2 under UV irradiation in aqueous solutions
    Oncescu, Tatiana
    Nitoi, Ines
    Oancea, Petruta
    JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES, 2008, 11 (01) : 105 - 110
  • [23] Fluorinated TiO2 Hollow Spheres for Detecting Formaldehyde under UV Irradiation
    Zhang, Jianwei
    Huang, Baoyu
    Li, Xinlei
    Yang, Chao
    Zhao, Wenzhuo
    Xie, Xiuhua
    Wang, Nan
    Li, Xiaogan
    MATERIALS, 2024, 17 (04)
  • [24] Electronic Properties of TiO2 Thin Films under UV Light Irradiation
    Watanabe, Y.
    Muramoto, Y.
    Shimizu, N.
    2010 ANNUAL REPORT CONFERENCE ON ELECTRICAL INSULATION AND DIELECTIC PHENOMENA, 2010,
  • [25] Rapid proton exchange between surface bridging hydroxyls and adsorbed molecules on TiO2
    Zhao, Yukun
    Shi, Tao
    Shang, Jinting
    Ding, Liyong
    Cao, Xingzhong
    Chen, Chuncheng
    Zhao, Jincai
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2020, 277
  • [26] UV-irradiation-induced bioactivity on TiO2 coatings with nanostructural surface
    Liu, Xuanyong
    Zhao, Xiaobing
    Li, Baoe
    Cao, Cong
    Dong, Yuqi
    Ding, Chuanxian
    Chu, Paul K.
    ACTA BIOMATERIALIA, 2008, 4 (03) : 544 - 552
  • [27] CoS2/TiO2 Nanocomposites for Hydrogen Production under UV Irradiation
    Shanmugaratnam, Sivagowri
    Velauthapillai, Dhayalan
    Ravirajan, Punniamoorthy
    Christy, Alfred Antony
    Shivatharsiny, Yohi
    MATERIALS, 2019, 12 (23)
  • [28] REDUCTION OF CO2 WITH H2O ON TIO2(100) AND TIO2(110) SINGLE-CRYSTALS UNDER UV-IRRADIATION
    YAMASHITA, H
    KAMADA, N
    HE, H
    TANAKA, K
    EHARA, S
    ANPO, M
    CHEMISTRY LETTERS, 1994, (05) : 855 - 858
  • [29] DYNAMICS OF SURFACE ATOMS AND MOLECULES UNDER IRRADIATION
    SHAPIRA, Y
    ISRAEL JOURNAL OF CHEMISTRY, 1982, 22 (04) : 386 - 394
  • [30] The kinetics and activation energy of photocatalytic degradation of phenol by TiO2 and TiO2/PANI photocatalyst under UV irradiation
    Li, Xueyan
    Luo, Qingzhi
    An, Jing
    Wang, Desong
    FRONTIERS OF ADVANCED MATERIALS AND ENGINEERING TECHNOLOGY, PTS 1-3, 2012, 430-432 : 57 - 60
12345