Enhanced extrinsic absorption promotes the visible light photocatalytic activity of wide band-gap (BiO)2CO3 hierarchical structure

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56307-56312 ◽  
Author(s):  
Ting Xiong ◽  
Fan Dong ◽  
Zhongbiao Wu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Hierarchical Structure ◽  
Wide Band ◽  
Wide Band Gap ◽  
Visible Light Photocatalytic Activity ◽  
Hierarchical Microspheres ◽  
Extrinsic Absorption ◽  
Visible Light Photocatalytic

(BiO)2CO3 hierarchical microspheres showed higher visible light photocatalytic activity due to enhanced extrinsic absorption benefiting from light reflecting and scattering.

BaTiO3–graphene nanocomposites: synthesis and visible light photocatalytic activity

2015 ◽  
Vol 39 (6) ◽  
pp. 4407-4413 ◽  
Author(s):  
Rui-Xia Wang ◽  
Qing Zhu ◽  
Wan-Sheng Wang ◽  
Cong-Min Fan ◽  
An-Wu Xu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Wide Band ◽  
Wide Band Gap ◽  
Graphene Nanocomposites ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

The new role of graphene as a macromolecular photosensitizer transforms the wide band gap BaTiO3 to have visible light photoactivity.

Enhanced visible light photocatalytic activity in BiOCl/SnO2: heterojunction of two wide band-gap semiconductors

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22740-22752 ◽  
Author(s):  
Menglin Sun ◽  
Qihang Zhao ◽  
Chunfang Du ◽  
Zhiliang Liu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Photocatalytic Performance ◽  
Wide Band ◽  
Wide Band Gap ◽  
Visible Light Photocatalytic Activity ◽  
Solution Route ◽  
Wide Band Gap Semiconductors ◽  
Visible Light Photocatalytic

A series of BiOCl/SnO2 heterojunctions exhibiting exceptional visible light photocatalytic performance has been successfully prepared using a two-step solution route.

Visible Light Photocatalytic Activity of Zinc Oxide-Copper Oxide Composites

2016 ◽  
Vol 705 ◽  
pp. 385-389 ◽  
Author(s):  
Dustin Loren V. Almanza ◽  
Maria Carmela T. Garcia ◽  
Alenn D. Prodigalidad ◽  
Marvin U. Herrera
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Wide Band ◽  
Ceramic Composites ◽  
Light Illumination ◽  
Wide Band Gap ◽  
Visible Light Photocatalytic Activity ◽  
Light Region ◽  
Photocatalytic Material ◽  
Visible Light Photocatalytic

Many traditional photocatalytic materials such as ZnO and TiO2 are ultraviolet light-triggered due to their wide band gap, however indoor light and sunlight reaching the surface of the earth are in the visible light region. This research aims to fabricate a photocatalytic material that can be triggered using visible light. Ceramic composites with ZnO and CuO interfaces were constructed using heterogeneous mixing technique. The photocatalytic activities of the samples were determined through their ability to degrade methyl orange dye under visible light illumination. Results show that the existence of the ZnO-CuO interface improved the visible light photocatalytic activity of the material.

Coupling with a narrow-band-gap semiconductor for the enhancement of visible-light photocatalytic activity: preparation of Bi2OxS3−x/Nb6O17 and application to the degradation of methyl orange

2016 ◽  
Vol 45 (35) ◽  
pp. 13944-13950 ◽  
Author(s):  
Gang Yan ◽  
Hongfei Shi ◽  
Huaqiao Tan ◽  
Wanbin Zhu ◽  
Yonghui Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Band Gap ◽  
Photocatalytic Performance ◽  
Narrow Band ◽  
Visible Light Photocatalytic Activity ◽  
Degradation Of Methyl Orange ◽  
Visible Light Photocatalytic

A new 2D sheet composite Bi2OxS3−x/Nb6O17 has been prepared, which shows good visible light photocatalytic performance for the degradation of methyl orange.

In situ formed Bi/BiOBrxI1−x heterojunction of hierarchical microspheres for efficient visible-light photocatalytic activity

2015 ◽  
Vol 17 (20) ◽  
pp. 13347-13354 ◽  
Author(s):  
Chunrui Zheng ◽  
Chuanbao Cao ◽  
Zulfiqar Ali
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Solvothermal Method ◽  
Visible Light Photocatalytic Activity ◽  
Hierarchical Microspheres ◽  
One Step ◽  
Visible Light Photocatalytic

Bi/BiOBrxI1−x heterojunction of hierarchical microspheres formed in situ with efficient visible-light photocatalytic activity were synthesized by a facile one-step solvothermal method.

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.

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