Characterizations and enhanced photocatalytic property of disorder-engineered TiO2 nanomaterials

被引：3

作者：

Sun, Chuan ^{[1
]}

Wang, Shu ^{[1
]}

Ji, Guangju ^{[1
]}

Wu, Haijun ^{[1
]}

Huang, Fuping ^{[1
]}

Lv, Jiaxing ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Sci, Harbin, Heilongjiang, Peoples R China

来源：

FERROELECTRICS | 2018年 / 529卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Titanium oxide; disorder-engineered; characterization; photocatalysis; VISIBLE-LIGHT; TITANIUM-DIOXIDE; HYDROGEN-PRODUCTION; OPTICAL-PROPERTIES; NANOWIRE ARRAYS; BLACK TIO2; THIN-FILMS; WATER; NANOPARTICLES; ABSORPTION;

D O I：

10.1080/00150193.2018.1458532

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Disorder-engineered TiO2 nanoparticles were synthesized by sol-gel method with twice sintering processes. The analyses of TEM, XPS and PL showed that the structural disorders existed in disorder-engineered TiO2 nanoparticles were caused by introducing a certain concentration of oxygen vacancies (V(O)s). These structural disorders could tailor the band structure of modified TiO2 by inducing a valence band (VB) tail detected from VB-XPS. This fabrication could not only narrow the bandgap of TiO2 to extend the optical absorption to visible response, but also provide an improvement on photocatalytic activity of TiO2. To compare with the reference TiO2, disorder-engineered TiO2 showed a remark photodecomposition rate which is beyond 3 times higher than that of reference TiO2.

引用

页码：149 / 158

页数：10

共 25 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[2] Ultrafast electron transfer dynamics from molecular adsorbates to semiconductor nanocrystalline thin films [J].

Asbury, JB ;

Hao, E ;

Wang, YQ ;

Ghosh, HN ;

Lian, TQ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (20) :4545-4557

[3] The electronic origin of the visible-light absorption properties of C-, N- and S-doped TiO2 nanomaterials [J].

Chen, Xiaobo ;

Burda, Clemens .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (15) :5018-+

[4] Titanium dioxide nanomaterials: Synthesis, properties, modifications, and applications [J].

Chen, Xiaobo ;

Mao, Samuel S. .

CHEMICAL REVIEWS, 2007, 107 (07) :2891-2959

[5] Properties of Disorder-Engineered Black Titanium Dioxide Nanoparticles through Hydrogenation [J].

Chen, Xiaobo ;

Liu, Lei ;

Liu, Zhi ;

Marcus, Matthew A. ;

Wang, Wei-Cheng ;

Oyler, Nathan A. ;

Grass, Michael E. ;

Mao, Baohua ;

Glans, Per-Anders ;

Yu, Peter Y. ;

Guo, Jinghua ;

Mao, Samuel S. .

SCIENTIFIC REPORTS, 2013, 3

[6] Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals [J].

Chen, Xiaobo ;

Liu, Lei ;

Yu, Peter Y. ;

Mao, Samuel S. .

SCIENCE, 2011, 331 (6018) :746-750

[7] Reduced and n-Type Doped TiO2: Nature of Ti3+ Species [J].

Di Valentin, Cristiana ;

Pacchioni, Gianfranco ;

Selloni, Annabella .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (48) :20543-20552

[8] Excess electron states in reduced bulk anatase TiO2: Comparison of standard GGA, GGA plus U, and hybrid DFT calculations [J].

Finazzi, Emanuele ;

Di Valentin, Cristiana ;

Pacchioni, Gianfranco ;

Selloni, Annabella .

JOURNAL OF CHEMICAL PHYSICS, 2008, 129 (15)

[9] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

[10] Design of Narrow-Gap TiO2: A Passivated Codoping Approach for Enhanced Photoelectrochemical Activity [J].

Gai, Yanqin ;

Li, Jingbo ;

Li, Shu-Shen ;

Xia, Jian-Bai ;

Wei, Su-Huai .

PHYSICAL REVIEW LETTERS, 2009, 102 (03)

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