(Bi, C and N) codoped TiO2 nanoparticles

Lv, Kangle; Zuo, Housong; Sun, Jie; Deng, Kejian; Song-cui, Liu; Li, Xiaofang; Wang, Duoyuan

doi:10.1016/j.jhazmat.2008.03.111

Cited by 140 publications

(55 citation statements)

References 27 publications

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“…However, conventional TiO 2 can only be activated in the UV region (\400 nm), about 5% of the solar spectrum, due to its wind band gap of about 3.2 eV. Therefore, band gap engineering is required if we want to use TiO 2 as an efficient catalyst under visible light irradiation [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Photocatalytic Performance of TiO2 Codoped with Bismuth and Nitrogen

Kang

Yuan

et al. 2011

Catal Lett

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Bi-N-TiO 2 nanoparticles were synthesized via anneal after a simple sol-gel combined hydrothermal method. X-ray diffraction (XRD), UV-Visible diffuse reflectance spectra, Scanning Electron Microscope (SEM) and X-ray photoelectron spectra (XPS) confirm that the grain sizes are almost uniform diameters of about 11 nm, the response to light extends to visible region, the doped ions substitute some of the lattice titanium atoms, and furthermore Bi 3? and Bi 4? ions coexist. The photodegradation of acid orange 7 (AO7) is used to evaluate the photocatalytic activity of the prepared Bi-N-TiO 2 nanoparticles. The experiments indicated that Bi-N-TiO 2 showed higher photocatalytic activity than that of P25, TiO 2 , N-TiO 2 and Bi-TiO 2 in the visible light area and ultraviolet light. The improvement of photocatalytic activity of Bi-N-TiO 2 is more likely because the N doping causes the visible light response and improves the quantum yield and photocatalytic activity of TiO 2 , and Bi doping causes the enhancement of the separation of photogenerated charges.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Photocatalytic Performance of TiO2 Codoped with Bismuth and Nitrogen

Kang

Yuan

et al. 2011

Catal Lett

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“…Precursor samples show bands at 3000-3500 cm −1 attributed to stretching vibration modes of OH group (TiO 2 -OH) (Figure 2(a)). It was believed that such TiO 2 -OH groups arise due to the hydrolysis reaction in the microemulsion process [20]. Peak at 1628 cm −1 is attributed to bending modes of -OH groups of water molecules adsorbed on the surface of catalyst [21].…”

Section: Ftir Studymentioning

confidence: 99%

Synthesis, Characterization, and Investigation of Visible Light Photocatalytic Activity of C Doped TiO₂/CdS Core-Shell Nanocomposite

Lavand

Malghe

Singh

2015

Indian Journal of Materials Science

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Carbon (C) doped TiO 2 /CdS core-shell nanocomposite (C/TiO 2 /CdS) was synthesized using microemulsion method. Synthesized powder was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive Xray spectroscopy (EDX), transmission electron microscopy (TEM), and UV-visible spectrophotometery. TEM images reveal that C/TiO 2 /CdS core-shell heterostructure is successfully prepared with CdS as a core and C doped TiO 2 as a shell. UV-visible absorption spectra show that CdS nanoparticles act as a sensitizer and effectively enhance the photoabsorption capacity of C/TiO 2 /CdS nanocomposite in visible region. Visible light photocatalytic activity of synthesized nanocomposite was evaluated for the degradation of methylene blue. C/TiO 2 /CdS core-shell nanocomposite exhibits better photocatalytic activity as compared to bare TiO 2 , CdS, CdS/TiO 2 , and C doped TiO 2 .

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“…Ion dopingP P [6] has frequently been applied to extend photo-response into the visible region. Some researches [7][8][9][10][11] indicated that BiP 3+ P ions could successfully incorporated into TiOB 2 B and extended the absorption of TiO 2 into visible light region. Xu et al [8] found that the formation of BiB 4 Ti 3 BO1 12 B phase in Bi-doped TiO 2 could inhibit the recombination of electrons/holes and enhance photogenerated holes migrating to the surface.…”

Section: Introductionmentioning

confidence: 99%

“…In Bi/S-doped TiO 2 , both S 3p acceptor states and partially occupied Bi 6s donor states hybridized with S 3p appear simultaneously; this observation suggests that photocatalytic efficiency would be improved significantly due to greater separation of electron-hole pairs. Bi, C and N codoped TiO 2 photocatalysts were prepared by doping TiO 2 B with BiClB 3 B and KSCN in a sol-gel process [11]. It was found that the cation and the anion affected the properties of TiO 2 differently.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Bi-doped TiOB2B modified by TEA and Its Enhanced Photocatalytic Properties under visible light illumination

Cheng¹,

Feng²,

Wang³

2012

Proceedings of the 2nd International Conference on Electronic and Mechanical Engineering and Information Technology (2012)

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Abstract. Bi-doped TiO 2 powders were synthetised by sol-gel method and triethanolamine(TEA) was added to the Bi-doped TiO 2 colloid to improve the perfenmance of prepared photocatalyst. The powder samples were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and UV-vis spectroscopy, respectively. The results show that the addition of TEA influenced both the morphology and the light absorption performance of the catalysts. The photocatalytic activity was investigated by employing methylene blue (MB) as the target pollutant under visible light illumination. Compared with Bi-doped TiO 2 , the samples modified by TEA exhibited an enhanced photocatalytic activity. The enhanced photocatalytic activity observed could be attributed to the porous surface and the red shift of visible light absorption which was caused by a narrowing of bandgap of semiconductor. IntroductionSemiconductor heterogeneous photocatalysis has been widely studied and recognized as a highly efficient and promising advanced oxidization technology for the degradation of environmental contaminants for several decades. TiO 2 is the most popular photocatalyst because of its high reactivity, chemical stability under ultraviolet light, nontoxicity, and low cost. The applications of TiO 2 photocatalytic technology on degradation of pollutants [1], splitting of water, as well as electro-optical conversion and other fields [2-3], have been receiving great attention. However, TiO 2 can be excited only under illumination with UV light at wavelengths of less than 387nm because of the wide band gap [1][2][3]. Several techniques for improving the photoresponse of oxide electrodes, which have led to higher sunlight conversion efficiency, have already been proposed. Combing TiO 2 with other materials [4] can improve its PEC performance. Surface noble metal [5] modified TiO 2 exhibited higher photocatalytic activity. Ion dopingP P[6] has frequently been applied to extend photo-response into the visible region. Some researches [7][8][9][10][11] indicated that BiP

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(Bi, C and N) codoped TiO2 nanoparticles

Cited by 140 publications

References 27 publications

Synthesis, Characterization and Photocatalytic Performance of TiO2 Codoped with Bismuth and Nitrogen

Synthesis, Characterization and Photocatalytic Performance of TiO2 Codoped with Bismuth and Nitrogen

Synthesis, Characterization, and Investigation of Visible Light Photocatalytic Activity of C Doped TiO₂/CdS Core-Shell Nanocomposite

Preparation of Bi-doped TiOB2B modified by TEA and Its Enhanced Photocatalytic Properties under visible light illumination

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(Bi, C and N) codoped TiO2 nanoparticles

Cited by 140 publications

References 27 publications

Synthesis, Characterization and Photocatalytic Performance of TiO2 Codoped with Bismuth and Nitrogen

Synthesis, Characterization and Photocatalytic Performance of TiO2 Codoped with Bismuth and Nitrogen

Synthesis, Characterization, and Investigation of Visible Light Photocatalytic Activity of C Doped TiO2/CdS Core-Shell Nanocomposite

Preparation of Bi-doped TiOB2B modified by TEA and Its Enhanced Photocatalytic Properties under visible light illumination

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Synthesis, Characterization, and Investigation of Visible Light Photocatalytic Activity of C Doped TiO₂/CdS Core-Shell Nanocomposite