A variety of carbon-modified titania powders were prepared by impregnation method using a commercial available titania powder, Hombikat UV100, as matrix material while a range of alcohols from propanol to hexanol were used as precursors of carbon sources. Rising the carbon number of alcoholic precursor molecule, the modified titania showed increasing visible activities of NOx photodegradation. The catalyst modified with cyclohexanol exhibited the best activities of 62%, 62%, 59%, and 54% for the total NOx removal under UV, blue, green, and red light irradiation, respectively. The high activity with long wavelength irradiation suggested a good capability of photocatalysis in full visible light spectrum. Analysis of UV-visible spectrum indicated that carbon modification promoted visible light absorption and red shift in band gap. XPS spectroscopic analysis identified the existence of carbonate species (C=O), which increased with the increasing carbon number of precursor molecule. Photoluminescence spectra demonstrated that the carbonate species suppressed the recombination rate of electron-hole pair. As a result, a mechanism of visible-light-active photocatalyst was proposed according to the formation of carbonate species on carbon-modified TiO2.
机构:
Nankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Nankai Univ, Teda Appl Phys Sch, Tianjin 300071, Peoples R China
Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R ChinaNankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Wang, Enjun
Zhang, Peng
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Nankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Nankai Univ, Teda Appl Phys Sch, Tianjin 300071, Peoples R ChinaNankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Zhang, Peng
Chen, Yongmei
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Beijing Univ Chem Technol, Sch Sci, Beijing 100029, Peoples R ChinaNankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Chen, Yongmei
Liu, Zhanwei
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Nankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Nankai Univ, Teda Appl Phys Sch, Tianjin 300071, Peoples R ChinaNankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Liu, Zhanwei
He, Tao
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Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R ChinaNankai Univ, Coll Phys, Tianjin 300071, Peoples R China
He, Tao
Cao, Yaan
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Nankai Univ, Coll Phys, Tianjin 300071, Peoples R China
Nankai Univ, Teda Appl Phys Sch, Tianjin 300071, Peoples R ChinaNankai Univ, Coll Phys, Tianjin 300071, Peoples R China
机构:
NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Zhang, Mingyi
Shao, Changlu
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Shao, Changlu
Li, Xinghua
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Li, Xinghua
Zhang, Peng
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Zhang, Peng
Sun, Yangyang
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Sun, Yangyang
Su, Chunyan
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Su, Chunyan
Zhang, Xin
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Zhang, Xin
Ren, Jingjing
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
Ren, Jingjing
Liu, Yichun
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NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R ChinaNE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China
机构:
Univ Teknol MARA, Fak Kejuruteraan Kimia, Shah Alam 40450, Selangor, MalaysiaUniv Teknol MARA, Fak Kejuruteraan Kimia, Shah Alam 40450, Selangor, Malaysia
Sikirman, Arman
Krishnan, Jagannathan
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Univ Teknol MARA, Fak Kejuruteraan Kimia, Shah Alam 40450, Selangor, MalaysiaUniv Teknol MARA, Fak Kejuruteraan Kimia, Shah Alam 40450, Selangor, Malaysia
机构:
Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R ChinaShanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
Tang, Yiwen
Zhou, Han
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Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R ChinaShanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
Zhou, Han
Zhang, Ke
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Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R ChinaShanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
Zhang, Ke
Ding, Jian
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Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R ChinaShanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
Ding, Jian
Fan, Tongxiang
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Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R ChinaShanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
Fan, Tongxiang
Zhang, Di
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Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R ChinaShanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
机构:
Tianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R ChinaTianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China
Ge, Yanhui
Luo, Hao
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Tianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China
Tianjin Univ Technol, Inst New Energy Mat & Low Carbon Technol, Tianjin 300384, Peoples R ChinaTianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China
Luo, Hao
Huang, Juanru
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机构:
Tiangong Univ, Sch Environm Sci & Engn, Tianjin 300387, Peoples R China
Tianjin Univ Technol, Inst New Energy Mat & Low Carbon Technol, Tianjin 300384, Peoples R ChinaTianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China
Huang, Juanru
Zhang, Zhiming
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Tianjin Univ Technol, Inst New Energy Mat & Low Carbon Technol, Tianjin 300384, Peoples R ChinaTianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China