Visible-light-driven deep oxidation of NO over Fe doped TiO2 catalyst: Synergic effect of Fe and oxygen vacancies

被引：201
作者：
Cheng, Gang [1 ,2 ]
Liu, Xin [1 ,2 ]
Song, Xinjie [1 ,2 ]
Chen, Xun [1 ]
Dai, Wenxin [1 ,2 ]
Yuan, Rusheng [1 ,2 ]
Fu, Xianzhi [1 ]
机构：
[1] Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
[2] Fujian Prov Univ, Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350002, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2020年 / 277卷
基金：
中国国家自然科学基金;
关键词：
NO oxidation; Fe-TiO2; Oxygen vacancies; O-2; activation; Photo behavior; TOTAL-ENERGY CALCULATIONS; CO PLUS NO; PHOTOCATALYTIC ACTIVITY; METAL-OXIDES; MIXED OXIDES; REDUCTION; ADSORPTION; REMOVAL; TEMPERATURE; NANOCOMPOSITES;
D O I：
10.1016/j.apcatb.2020.119196
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：
A Fe doped TiO2 catalyst (Fe-TiO2) was evaluated for NO oxidation reaction under visible light irradiation. The Fe-TiO2 not only exhibited better catalytic activity and stability, but also suppressed the production of nitrogen dioxide (NO2) than the undoped TiO2. The results of in situ DRIFTS indicated that visible light benefited the adsorption and activation of NO at Fe sites (Fe-(NO)(2)) and Ti sites (Ti-3-NO) as well as the formation of active intermediates (e.g. Fe3+-NO3- and Ti4+-NO-). After EPR, DRS, PL and XPS testing, it was proposed that incorporating Fe ions into TiO2 induced the formation of more oxygen vacancies (OVs), while visible light further facilitated this process, resulting in an enhanced adsorption & activation of NO and also a promoted formation of reactive oxygen species (ROS). Thus, a strengthened photo-driven effect for oxidizing NO into NO2- and NO3- occurred on Fe-TiO2.
引用
收藏
页数：17
相关论文
共 76 条
[1]   Structure and activity of nanosized iron-doped anatase TiO2 catalysts for phenol photocatalytic degradation [J].
Adan, C. ;
Bahamonde, A. ;
Fernandez-Garcia, M. ;
Martinez-Arias, A. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 72 (1-2) :11-17
[2]   First-principles calculations of the electronic structure and spectra of strongly correlated systems: The LDA+U method [J].
Anisimov, VI ;
Aryasetiawan, F ;
Lichtenstein, AI .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (04) :767-808
[3]  
[Anonymous], 2019, ANGEW CHEM INT
[4]   Effect of Fe3+ ion doping to TiO2 on the photocatalytic degradation of Malachite Green dye under UV and vis-irradiation [J].
Asilturk, Meltem ;
Sayilkan, Funda ;
Arpac, Ertugrul .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2009, 203 (01) :64-71
[5]   Adsorption and Desorption of NOx on Commercial Ceria-Zirconia (CexZr1-xO2) Mixed Oxides: A Combined TGA, TPD-MS, and DRIFTS study [J].
Azambre, B. ;
Zenboury, L. ;
Koch, A. ;
Weber, J. V. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (30) :13287-13299
[6]   PROJECTOR AUGMENTED-WAVE METHOD [J].
BLOCHL, PE .
PHYSICAL REVIEW B, 1994, 50 (24) :17953-17979
[7]   Identification of active sites and adsorption complexes in Fe/MFI catalysts for NOx reduction [J].
Chen, HY ;
El-Malki, EM ;
Wang, X ;
van Santen, RA ;
Sachtler, WMH .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 162 (1-2) :159-174
[8]   Removal of NOX Using Hydrogen Peroxide Vapor over Fe/TiO2 Catalysts and an Absorption Technique [J].
Chen, Lei ;
Li, Yuxin ;
Zhao, Qinxin ;
Wang, Yungang ;
Liang, Zhiyuan ;
Lu, Qiang .
CATALYSTS, 2017, 7 (12)
[9]   Synergistic photo-thermal catalytic NO purification of MnOx/g-C3N4: Enhanced performance and reaction mechanism [J].
Chen, Peng ;
Dong, Fan ;
Ran, Maoxi ;
Li, Jiarui .
CHINESE JOURNAL OF CATALYSIS, 2018, 39 (04) :619-629
[10]   Visible light assisted thermocatalytic reaction of CO plus NO over Pd/LaFeO3 [J].
Cheng, Gang ;
Tan, Xiaofang ;
Song, Xinjie ;
Chen, Xun ;
Dai, Wenxin ;
Yuan, Rusheng ;
Fu, Xianzhi .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 251 :130-142
12345678