Carbon Coated N-Doping of TiO2 Nanotube Films with Enhanced Visible-Light Photocatalytic Activity

2012 ◽  
Vol 512-515 ◽  
pp. 1564-1567 ◽  
Author(s):  
Fang Zhou Jia ◽  
Zhong Ping Yao ◽  
Zhao Hua Jiang
Keyword(s):  
Raman Spectroscopy ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Region ◽  
Step Process ◽  
Graphitized Carbon ◽  
N Doping ◽  
Carbon Coated ◽  
Visible Light Photocatalytic ◽  
Nanotube Films

Carbon coated N-doping of TiO2 nanotube films were successfully prepared by a two-step process of anodization and gas thermal penetration. The morphologies and structures of composites were characterized by SEM, XRD, XPS and Raman spectroscopy analyses, respectively. The results show that graphitized carbon deposited on the surface of TiO2NTs nanotubes under gas thermal penetration conditions, by which N atoms are incorporated into the lattice of TiO2NTs through substituting the site of oxygen atoms. Such Carbon coated N-doping of TiO2 nanotube films presents the enhance absorption in visible region. The photo catalytic tests show that the prepared films at 600°C reveal higher photocatalytic activity for splitting of water than other samples.

The nanocomposite of polyaniline and nitrogen-doped layered HTiNbO5with excellent visible-light photocatalytic performance

2014 ◽  
Vol 16 (26) ◽  
pp. 13409-13417 ◽  
Author(s):  
Chao Liu ◽  
Liang Wu ◽  
Jing Chen ◽  
Ji-yuan Liang ◽  
Chang-shun Li ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
High Efficiency ◽  
Nitrogen Doped ◽  
Visible Light Photocatalytic Activity ◽  
N Doping ◽  
Visible Light Photocatalytic

N-doping and intercalation resulted in a PANI–N-HTiNbO5lamellar nanocomposite, which showed a dramatic enhanced visible-light photocatalytic activity and stability for the degradation of methylene blue (MB), due to the high efficiency of charge separation.

scholarly journals Enhanced Visible Light Photocatalytic Activity of Mesoporous AnataseTiO2Codoped with Nitrogen and Chlorine

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Xiuwen Cheng ◽  
Xiujuan Yu ◽  
Zipeng Xing ◽  
Lisha Yang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Light Absorption ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Visible Region ◽  
X Ray ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Anatase mesoporous titanium dioxide codoped with nitrogen and chlorine (N-Cl-TiO2) photocatalysts were synthesized through simple one-step sol-gel reactions in the presence of ammonium chloride. The resulting materials were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible diffuse reflection spectrum (UV-vis DRS). XRD results indicated that codoping with nitrogen and chlorine could effectively retard the phase transformation of TiO2from anatase to rutile and the growth of the crystallite sizes. XPS revealed that nitrogen and chlorine elements were incorporated into the lattice of TiO2through substituting the lattice oxygen atoms. DRS exhibited that the light absorption of N-Cl-TiO2in visible region was greatly improved. As a result, the band gap of TiO2was reduced to 2.12 eV. The photocatalytic activity of the as-synthesized TiO2was evaluated for the degradation of RhB and phenol under visible light irradiation. It was found that N-Cl-TiO2catalyst exhibited higher visible light photocatalytic activity than that of P25 TiO2and N-TiO2, which was attributed to the small crystallite size, intense light absorption in visible region, and narrow band gap.

Preparation of CdS nanoparticle loaded flower-like Bi2O2CO3 heterojunction photocatalysts with enhanced visible light photocatalytic activity

2015 ◽  
Vol 44 (25) ◽  
pp. 11321-11330 ◽  
Author(s):  
Yanhui Ao ◽  
Liya Xu ◽  
Peifang Wang ◽  
Chao Wang ◽  
Jun Hou ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Step Process ◽  
Visible Light Photocatalytic Activity ◽  
Cds Nanoparticle ◽  
Visible Light Photocatalytic

In this work, a series of novel flower-like Bi2O2CO3/CdS heterojunctions were prepared by a simple and feasible two-step process. The results showed that the as-prepared Bi2O2CO3/CdS heterojunctions exhibited much higher activity than pure Bi2O2CO3.

Dealloying induced N-doping in spindle-like porous rutile TiO 2 for enhanced visible light photocatalytic activity

2018 ◽  
Vol 137 ◽  
pp. 204-211 ◽  
Author(s):  
Zhengfeng Zhao ◽  
Tianyi Kou ◽  
Lanxiang Zhang ◽  
Sicheng Zhai ◽  
Wen Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Photocatalytic Activity ◽  
N Doping ◽  
Visible Light Photocatalytic

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

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Atul B. Lavand ◽  
Yuvraj S. Malghe ◽  
Suraj H. Singh
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Region ◽  
Cds Nanoparticles ◽  
Core Shell ◽  
Visible Absorption ◽  
X Ray ◽  
Visible Light Photocatalytic Activity ◽  
Uv Visible ◽  
Visible Light Photocatalytic

Carbon (C) doped TiO2/CdS core-shell nanocomposite (C/TiO2/CdS) was synthesized using microemulsion method. Synthesized powder was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and UV-visible spectrophotometery. TEM images reveal that C/TiO2/CdS core-shell heterostructure is successfully prepared with CdS as a core and C doped TiO2 as a shell. UV-visible absorption spectra show that CdS nanoparticles act as a sensitizer and effectively enhance the photoabsorption capacity of C/TiO2/CdS nanocomposite in visible region. Visible light photocatalytic activity of synthesized nanocomposite was evaluated for the degradation of methylene blue. C/TiO2/CdS core-shell nanocomposite exhibits better photocatalytic activity as compared to bare TiO2, CdS, CdS/TiO2, and C doped TiO2.

Pronounced Visible Light Photocatalytic Activity Obtained from Coupling of TiO2 with Metal Organic Macromolecule

2017 ◽  
Vol 727 ◽  
pp. 508-513
Author(s):  
Zhi Dong Wei ◽  
Rui Wang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Step Process ◽  
Visible Light Photocatalytic Activity ◽  
Metal Organic ◽  
Visible Photocatalytic Activity ◽  
Organic Macromolecule ◽  
Visible Light Photocatalytic

In this work, a new catalyst TiO2@MOM has been successfully synthesized by coupling TiO2 with metal organic macromolecule (MOM) through hydrothermal-solvothermal two-step process. Having a high visible photocatalytic activity considerably superior to that of single TiO2, the fabrication of TiO2@MOM should provide a new way of upgrading the TiO2–based catalyst.

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