Ni2+ and Ti3+ co-doped porous black anatase TiO2 with unprecedented-high visible-light-driven photocatalytic degradation performanceElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ra23743b
A novel Ni 2+ and Ti 3+ co-doped porous black anatase TiO 2 is successfully synthesized by a facile sol-gel technique combined with an in situ solid-state chemical reduction approach, followed by mild calcinations (350 °C) in argon atmosphere. The obtained photocatalysts are characterized in detail...
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Format | Journal Article |
Published |
17.12.2015
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Abstract | A novel Ni
2+
and Ti
3+
co-doped porous black anatase TiO
2
is successfully synthesized by a facile sol-gel technique combined with an
in situ
solid-state chemical reduction approach, followed by mild calcinations (350 °C) in argon atmosphere. The obtained photocatalysts are characterized in detail by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, electron paramagnetic resonance, N
2
adsorption, and transmission electron microscopy. The results indicate that the Ni
2+
and Ti
3+
elements are co-doped into the lattice of anatase TiO
2
. The prepared Ni
2+
/Ti
3+
co-doped black anatase TiO
2
possesses a mesoporous structure, consisting of disordered Ti
3+
and oxygen vacancy layers. Based on UV-vis diffuse reflectance spectra and valence band analysis, the doped Ni
2+
and Ti
3+
species can significantly narrow the band gap of anatase TiO
2
due to the formation of mid-gap states, which allows utilization of visible-light and prevents fast recombination of photogenerated charges effectively. Furthermore, the prepared co-doped photocatalysts exhibit unprecedented higher photocatalytic activity than that of the pure TiO
2
and the Ni
2+
doped TiO
2
. The degradation ratio of methyl orange and rhodamine B is up to 95.38 and 95.86%, respectively, within 150 min irradiation of visible-light by the obtained Ni
2+
/Ti
3+
co-doped porous black anatase TiO
2
. The high visible-light photocatalytic degradation performance may be ascribed to the efficient doping of Ni
2+
and Ti
3+
in favor of the absorption of visible-light and the separation of photogenerated charges, and the porous structure facilitating the diffusion of reactants and products.
A black Ni doped porous TiO
2
were fabricated
via
an
in situ
solid-state chemical reduction approach, which exhibited excellent visible-light-driven performance. |
---|---|
AbstractList | A novel Ni
2+
and Ti
3+
co-doped porous black anatase TiO
2
is successfully synthesized by a facile sol-gel technique combined with an
in situ
solid-state chemical reduction approach, followed by mild calcinations (350 °C) in argon atmosphere. The obtained photocatalysts are characterized in detail by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, electron paramagnetic resonance, N
2
adsorption, and transmission electron microscopy. The results indicate that the Ni
2+
and Ti
3+
elements are co-doped into the lattice of anatase TiO
2
. The prepared Ni
2+
/Ti
3+
co-doped black anatase TiO
2
possesses a mesoporous structure, consisting of disordered Ti
3+
and oxygen vacancy layers. Based on UV-vis diffuse reflectance spectra and valence band analysis, the doped Ni
2+
and Ti
3+
species can significantly narrow the band gap of anatase TiO
2
due to the formation of mid-gap states, which allows utilization of visible-light and prevents fast recombination of photogenerated charges effectively. Furthermore, the prepared co-doped photocatalysts exhibit unprecedented higher photocatalytic activity than that of the pure TiO
2
and the Ni
2+
doped TiO
2
. The degradation ratio of methyl orange and rhodamine B is up to 95.38 and 95.86%, respectively, within 150 min irradiation of visible-light by the obtained Ni
2+
/Ti
3+
co-doped porous black anatase TiO
2
. The high visible-light photocatalytic degradation performance may be ascribed to the efficient doping of Ni
2+
and Ti
3+
in favor of the absorption of visible-light and the separation of photogenerated charges, and the porous structure facilitating the diffusion of reactants and products.
A black Ni doped porous TiO
2
were fabricated
via
an
in situ
solid-state chemical reduction approach, which exhibited excellent visible-light-driven performance. |
Author | Li, Zhenzi Liu, Chuntao Zhang, Hang Wu, Xiaoyan Xing, Zipeng Zhang, Yan Zhou, Wei Zhu, Qi |
AuthorAffiliation | Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion College of Heilongjiang Province Key Laboratory of Functional Inorganic Material Chemistry Department of Epidemiology and Biostatistics Harbin Medical University Ministry of Education of the People's Republic of China Heilongjiang University |
AuthorAffiliation_xml | – name: Department of Epidemiology and Biostatistics – name: Heilongjiang University – name: Harbin Medical University – name: Ministry of Education of the People's Republic of China – name: Key Laboratory of Chemical Engineering Process and Technology for High-Efficiency Conversion – name: College of Heilongjiang Province – name: Key Laboratory of Functional Inorganic Material Chemistry |
Author_xml | – sequence: 1 givenname: Hang surname: Zhang fullname: Zhang, Hang – sequence: 2 givenname: Zipeng surname: Xing fullname: Xing, Zipeng – sequence: 3 givenname: Yan surname: Zhang fullname: Zhang, Yan – sequence: 4 givenname: Zhenzi surname: Li fullname: Li, Zhenzi – sequence: 5 givenname: Xiaoyan surname: Wu fullname: Wu, Xiaoyan – sequence: 6 givenname: Chuntao surname: Liu fullname: Liu, Chuntao – sequence: 7 givenname: Qi surname: Zhu fullname: Zhu, Qi – sequence: 8 givenname: Wei surname: Zhou fullname: Zhou, Wei |
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Notes | 10.1039/c5ra23743b Electronic supplementary information (ESI) available. See DOI |
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Snippet | A novel Ni
2+
and Ti
3+
co-doped porous black anatase TiO
2
is successfully synthesized by a facile sol-gel technique combined with an
in situ
solid-state... |
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Title | Ni2+ and Ti3+ co-doped porous black anatase TiO2 with unprecedented-high visible-light-driven photocatalytic degradation performanceElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ra23743b |
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