Enhanced visible-light photocatalytic H2-generation activity of carbon/g-C3N4 nanocomposites prepared by two-step thermal treatment

2017 ◽  
Vol 46 (32) ◽  
pp. 10611-10619 ◽  
Author(s):  
Quanlong Xu ◽  
Chuanjia Jiang ◽  
Bei Cheng ◽  
Jiaguo Yu
Keyword(s):  
Thermal Treatment ◽  
Visible Light ◽  
Light Response ◽  
Brown Carbon ◽  
H2 Generation ◽  
Visible Light Response ◽  
Response Range ◽  
Photocatalytic H2 Generation ◽  
Visible Light Photocatalytic ◽  
Generation Activity

Brown carbon/g-C3N4 nanocomposites synthesized by two-step calcination exhibited a wide visible light response range and improved photocatalytic H2-generation performance.

Enhanced visible light photocatalytic activity of anatase TiO2 through C, N, and F codoping

2014 ◽  
Vol 92 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Zongbao Li ◽  
Wang Xia ◽  
Lichao Jia
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Density Functional ◽  
Light Response ◽  
Anatase Tio2 ◽  
Functional Theory ◽  
Visible Light Response ◽  
Elemental Doping ◽  
Visible Light Photocatalytic ◽  
Good Agreement

The electronic and optical properties of pure, C-doped, (C, F)-codoped, (C, N)-codoped, and (C, N, F)-codoped anatase TiO2 are investigated by using density functional theory (DFT). The results indicate that elemental doping creates a much more efficient and stable photocatalyst than pristine, which narrows the band gap of TiO2 and realizes its visible light response activity. With the incorporation of F into (C, N)-codoped TiO2, strong visible light absorption and photocatalytic activity are further increased. It also verifies the reliability of our calculations for good agreement with the experimental results in the optical absorption of (C, N)-codoped and (C, N, F)-codoped.

scholarly journals Preparation and Property of Mo-Doped Visible-Light Response Titaniumdioxide Photocatalyst

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Yingying Li ◽  
Xianliang Song ◽  
Zhedong Wei ◽  
Jianguang Zhang ◽  
Lijuan Qin ◽  
...  
Keyword(s):  
Visible Light ◽  
Crystal Lattice ◽  
Raw Materials ◽  
Light Response ◽  
Ammonium Molybdate ◽  
Electron Hole ◽  
Degradation Study ◽  
Visible Light Response ◽  
Photocatalytic Activities ◽  
Visible Light Photocatalytic

Mo-titaniumdioxide (P25) photocatalyst with visible-light response was prepared with the ammonium molybdate for Mo source and titaniumdioxide for the raw materials by the method of dissolving and calcining. The photocatalysts’ structure was characterized by XRD, XPS, and UV-Vis absorption spectrum and TEM. The photocatalytic activities of Mo-titaniumdioxide were measured by the degradation of methylene blue (MB) under visible-light irradiation. The results showed that Mo characteristic peaks appeared at the point of 235.45 eV, 234.2 eV, 232.3 eV, and 231.1 eV. In Mo-titaniumdioxide crystal lattice, Mo6+had the highest percentage (about 84.08%), indicating that Mo element was inserted into titaniumdioxide crystal lattice and considerable amount of Mo dopant was in the 6+ valence state, which restrained the recombination of electron-hole and had the visible-light photocatalytic activity. Photocatalytic degradation study indicated that the samples prepared at calcination temperature of 500°C were used to degrade MB; after 3 h, the degradation reached up to 80.67%.

In situ photodeposition of amorphous NixP on CdS nanorods for efficient visible-light photocatalytic H2 generation

2019 ◽  
Vol 9 (19) ◽  
pp. 5394-5400 ◽  
Author(s):  
Simeng Zhu ◽  
Jing Wang ◽  
Yishan He ◽  
Zhiyang Yu ◽  
Xuxu Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Metal Free ◽  
H2 Generation ◽  
Cds Nanorods ◽  
Photocatalytic H2 Generation ◽  
Visible Light Photocatalytic

Noble metal-free amorphous NixP modified CdS with superior photocatalytic H2 evolution activity has been successfully fabricated.

Efficient visible light photocatalytic activity and enhanced stability of BiOBr/Cd(OH)2 heterostructures

2015 ◽  
Vol 39 (9) ◽  
pp. 7153-7163 ◽  
Author(s):  
Bilal Masood Pirzada ◽  
Owais Mehraj ◽  
Niyaz A. Mir ◽  
Mohammad Zain Khan ◽  
Suhail Sabir
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Response ◽  
Charge Recombination ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Response ◽  
Visible Light Photocatalytic ◽  
Enhanced Stability

The BiOBr/Cd(OH)2 heterojunction formation decreased the charge recombination phenomenally and imparted significant visible light response.

scholarly journals Optimizing the synthesis of SnO2/TiO2/RGO nanocomposites with excellent visible light photocatalytic and antibacterial activities

2019 ◽  
Vol 18 (12) ◽  
pp. 2989-2999 ◽  
Author(s):  
Shujuan Yao ◽  
Shanshan Zhou ◽  
Jie Wang ◽  
Wenzhi Li ◽  
Zhihui Li
Keyword(s):  
Visible Light ◽  
Growth Inhibition ◽  
Synergistic Effects ◽  
Light Response ◽  
Antibacterial Activities ◽  
E Coli ◽  
Visible Light Response ◽  
Visible Light Photocatalytic

The as-prepared SnO2/TiO2/RGO hybrids exhibit enhanced visible-light-response photocatalytic efficiencies of RhB degradation and growth inhibition of E. coli due to the combined merits of SnO2, TiO2 and RGO to achieve maximum synergistic effects.

Facile synthesis of mesoporous carbon nitride and titanium dioxide nanocomposites with enhanced visible light photocatalytic activity

2017 ◽  
Vol 41 (19) ◽  
pp. 10542-10549 ◽  
Author(s):  
Sapanbir S. Thind ◽  
Christian C. Mustapic ◽  
Jiali Wen ◽  
Carl D. Goodwin ◽  
Aicheng Chen
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Light Response ◽  
Combustion Method ◽  
Facile Synthesis ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
Visible Light Response ◽  
Mesoporous Carbon Nitride ◽  
Visible Light Photocatalytic

C3N4–TiO2 nanocomposites with a large surface area and strong visible light response were fabricated via a rapid solution combustion method.

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