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
  • [41] Optimization of Malachite Green Removal from Water by TiO2 Nanoparticles under UV Irradiation
    Ma, Yongmei
    Ni, Maofei
    Li, Siyue
    NANOMATERIALS, 2018, 8 (06):
  • [42] Effect of Au position on the photoelectrochemical and photocatalytic activity of TiO2 nanotubes under UV irradiation
    Wu, Liang-Peng
    Wang, Wen-Guang
    Mo, Dan
    Duan, Jing-Lai
    Li, Xin-Jun
    INORGANIC AND NANO-METAL CHEMISTRY, 2024, 54 (11) : 1154 - 1162
  • [43] Dynamical and structural properties of adsorbed water molecules at the TiO2 rutile-(110) surface: interfacial hydrogen bonding probed by ab-initio molecular dynamics
    Margineda, Joan
    English, Niall J.
    MOLECULAR PHYSICS, 2020, 118 (9-10) : 9 - 10
  • [44] Surface-adsorbed ions on TiO2 nanosheets for selective photocatalytic CO2 reduction
    Li, Xiaogang
    Bi, Wentuan
    Wang, Zhe
    Zhu, Wenguang
    Chu, Wangsheng
    Wu, Changzheng
    Xie, Yi
    NANO RESEARCH, 2018, 11 (06) : 3362 - 3370
  • [45] Functionalization of Ceramic Tiles with N-doped TiO2 and Their Photocatalytic Function Under UV or Visible Light Irradiation
    Vaiano, Vincenzo
    Sarno, Giuseppe
    Ciambelli, Paolo
    Sannino, Diana
    JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES, 2014, 17 (02) : 193 - 201
  • [46] Photocatalytic degradation kinetics of anti-inflammatory drug balsalazide using semiconductor TiO2 under UV irradiation
    Kadam, Satyendra
    Goyal, Swati
    Sikarwar, Shalini
    Jain, Rajeev
    JOURNAL OF THE INDIAN CHEMICAL SOCIETY, 2016, 93 (03) : 327 - 332
  • [47] Photocatalytic activity enhancement of Dy-doped TiO2 nanoparticles hybrid with TiO2 (B) nanobelts under UV and fluorescence irradiation
    San Nwe, Thida
    Sikong, Lek
    Kokoo, Rungrote
    Khangkhamano, Matthana
    CURRENT APPLIED PHYSICS, 2020, 20 (02) : 249 - 254
  • [48] Cu/TiO2 composite nanofibers with improved photocatalytic performance under UV and UV-visible light irradiation
    Pascariu, Petronela
    Cojocaru, Corneliu
    Samoila, Petrisor
    Airinei, Anton
    Olaru, Niculae
    Rotaru, Aurelian
    Romanitan, Cosmin
    Tudoran, Lucian Barbu
    Suchea, Mirela
    SURFACES AND INTERFACES, 2022, 28
  • [49] Identification of adsorbed molecules via STM tip manipulation: CO, H2O, and O2 on TiO2 anatase (101)
    Setvin, Martin
    Daniel, Benjamin
    Aschauer, Ulrich
    Hou, Weiyi
    Li, Ye-Fei
    Schmid, Michael
    Selloni, Annabella
    Diebold, Ulrike
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, 16 (39) : 21524 - 21530
  • [50] Photocatalysis of fluorene adsorbed onto TiO2
    Gimeno, O.
    Rivas, F. J.
    Beltran, F. J.
    Carbajo, M.
    CHEMOSPHERE, 2007, 69 (04) : 595 - 604
12345