A comparative study of two techniques for determining photocatalytic activity of nitrogen doped TiO2 nanotubes under visible light irradiation: Photocatalytic reduction of dye and photocatalytic oxidation of organic molecules

2011 ◽  
Vol 222 (1) ◽  
pp. 258-262 ◽  
Author(s):  
Su-Il In ◽  
Peter C.K. Vesborg ◽  
Billie L. Abrams ◽  
Yidong Hou ◽  
Ib Chorkendorff
Keyword(s):  
Photocatalytic Activity ◽  
Comparative Study ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Tio2 Nanotubes ◽  
Photocatalytic Oxidation ◽  
Organic Molecules ◽  
Photocatalytic Reduction ◽  
Light Irradiation ◽  
Nitrogen Doped

Ultrathin HNb3O8 nanosheets with oxygen vacancies for enhanced photocatalytic oxidation of amines under visible light irradiation

2019 ◽  
Vol 7 (10) ◽  
pp. 5493-5503 ◽  
Author(s):  
Junli Chen ◽  
Hai Wang ◽  
Zhiqiang Zhang ◽  
Lifeng Han ◽  
Yonghui Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Oxidation ◽  
Oxygen Vacancies ◽  
Hydrothermal Process ◽  
Light Irradiation ◽  
Excellent Photocatalytic Activity ◽  
Simple Hydrothermal Process

Ultrathin HNb3O8 nanosheets with oxygen vacancies were successfully synthesized by a simple hydrothermal process. HNb3O8 NSs showed excellent photocatalytic activity.

Photocatalytic reduction of triclosan on Au–Cu2O nanowire arrays as plasmonic photocatalysts under visible light irradiation

2015 ◽  
Vol 17 (26) ◽  
pp. 17421-17428 ◽  
Author(s):  
Junfeng Niu ◽  
Yunrong Dai ◽  
Lifeng Yin ◽  
Jianying Shang ◽  
John C. Crittenden
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Sandwich Structure ◽  
Photocatalytic Reduction ◽  
Nanowire Arrays ◽  
Light Irradiation ◽  
Reductive Degradation

Au/Cu2O/Cu “sandwich” structure nanowire arrays showed reinforced photocatalytic activity for reductive degradation of triclosan under visible light irradiation.

Photocatalytic reduction of CO2 with H2O to CH4 over ultrathin SnNb2O6 2D nanosheets under visible light irradiation

2016 ◽  
Vol 18 (5) ◽  
pp. 1355-1363 ◽  
Author(s):  
Shuying Zhu ◽  
Shijing Liang ◽  
Jinhong Bi ◽  
Minghua Liu ◽  
Limin Zhou ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Structural Features ◽  
Photocatalytic Reduction ◽  
Light Irradiation ◽  
Reduction Of Co2 ◽  
2D Nanosheets

Ultrathin SnNb2O6 2D nanosheets could be used as an efficient photocatalyst for the reduction of CO2 to methane and exhibit much higher photocatalytic activity than that of the bulk counterpart due to the unique structural features.

Structure and Photocatalytic Activity of Nitrogen-doped HTiNbO5 Nanosheet Aggregation

NANO ◽  
2017 ◽  
Vol 12 (01) ◽  
pp. 1750003 ◽  
Author(s):  
Wei Lv ◽  
Jie He ◽  
Andong Xu ◽  
Lifang Hu ◽  
Liangguo Da
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Diffuse Reflectance Spectroscopy ◽  
Proton Exchange ◽  
Light Irradiation ◽  
Laser Raman Spectroscopy ◽  
X Ray ◽  
Nitrogen Doped

Nitrogen-doped HTiNbO5 nanosheet (N-HTiNbO5-NS) aggregation was successfully obtained through a series of process, including preparation of nitrogen-doped precursor (N-KTiNbO5), proton-exchange of N-KTiNbO5 and exfoliation of N-HTiNbO5. The structures of the as-prepared samples are characterized by means of powder X-ray diffraction (XRD), Scan electron microscopy (SEM), Transmission electron microscopy (TEM), N2 adsorption-desorption isotherms UV-visible diffuse reflectance spectroscopy (UV-Vis-DRS), Laser Raman spectroscopy (LRS), X-ray photoelectron spectroscopy (XPS) and Thermogravimetric analysis-differential scanning calorimetry (TG-DSC). The catalytic activities of the as-prepared samples are evaluated by the photocatalytic degradation of methylene blue (MB) aqueous solution under visible light irradiation. The results reveal that N-HTiNbO5-NS due to the large specific surface area and brilliant visible light response exhibits a relatively excellent photocatalytic activity in the decomposition of MB under visible light irradiation.

scholarly journals Synthesis of Nitrogen-Doped ZnS with Camellia Brushfield Yellow Nanostructures for Enhanced Photocatalytic Activity under Visible Light Irradiation

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Gang-Juan Lee ◽  
Chi-Lun Hong ◽  
Valentina Batalova ◽  
Gennady Mokrousov ◽  
Jerry Wu
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photoelectron Spectroscopy ◽  
Light Irradiation ◽  
X Ray ◽  
Nitrogen Doped ◽  
Composite Catalysts ◽  
N Doping

Nitrogen modified zinc sulfide photocatalysts were successfully prepared and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS), and surface area analysis. Thermal decomposition of the semisolid was carried out under nitrogen conditions at 500°C for 2 hours, and a series of nitrogen-doped ZnS photocatalysts were produced by controlling inflow flow rate of nitrogen at 15–140 mL/min. Optical characterizations of the synthesized N-doping ZnS substantially show the shifted photoabsorption properties from ultraviolet (UV) region to visible light. The band gaps of nitrogen-doped ZnS composite catalysts were calculated to be in the range of 2.58~2.74 eV from the absorptions edge position. The 15N/ZnS catalyst shows the highest photocatalytic activity, which results in 75.7% degradation of Orange II dye in 5 hrs by visible light irradiation, compared with pristine ZnS and higher percentage N-doping ZnS photocatalysts.

Synthesis, electron transfer and photocatalytic activity of TiO2 nanotubes sensitized by meso-tetra(4-carboxyphenyl)porphyrin under visible-light irradiation

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58184-58190 ◽  
Author(s):  
Meng Wei ◽  
Junmin Wan ◽  
Zhiwen Hu ◽  
Bing Wang ◽  
Zhiqin Peng
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Solar Energy ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Crucial Role ◽  
Tio2 Nanotubes ◽  
Chemical Conversion ◽  
Light Irradiation

Porphyrin plays a crucial role in the process of photocatalysis, porphyrin compounds are naturally suitable antennas for solar energy collection and promising direct solar energy-to-chemical conversion equipment.

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