Graphene quantum dot modified Bi2WO6 with enhanced photocatalytic activity by reinforcing the charge separation

2020 ◽  
Vol 44 (44) ◽  
pp. 19220-19226
Author(s):  
Shaofeng Xiong ◽  
Weian Wang ◽  
Guangyue Fu ◽  
Jian Hao ◽  
Pingle Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Quantum Dot ◽  
Charge Separation ◽  
Graphene Quantum Dot ◽  
Excellent Photocatalytic Activity

The GQDs/BWO composites consisting of size-controllable GQDs and Bi2WO6 nanosheets were synthesized, and they exhibited an excellent photocatalytic activity.

Enhancement of charge separation in ferroelectric heterogeneous photocatalyst Bi4(SiO4)3/Bi2SiO5 nanostructures

2017 ◽  
Vol 46 (44) ◽  
pp. 15582-15588 ◽  
Author(s):  
Amar Al-Keisy ◽  
Long Ren ◽  
Tian Zheng ◽  
Xun Xu ◽  
Michael Higgins ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Separation ◽  
Excellent Photocatalytic Activity

Excellent photocatalytic activity is given rise to enhanced charge separation in ferroelectric heterogeneous Bi4(SiO4)3/Bi2SiO5 photocatalyst.

Enhancing visible light photocatalytic activity of bismuth vanadate with the loading of zinc oxide

2019 ◽  
Vol 12 (01) ◽  
pp. 1850110 ◽  
Author(s):  
Mengjun Liang ◽  
Lu Chen ◽  
Zhiyuan Yang ◽  
Zhen Zeng ◽  
Shuijin Yang
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Specific Surface ◽  
Visible Light Irradiation ◽  
Charge Separation ◽  
Facile Hydrothermal Method ◽  
Excellent Photocatalytic Activity ◽  
Efficient Charge ◽  
Visible Light Photocatalytic

ZnO/Bi4V2O[Formula: see text] nanocomposites were prepared via a facile hydrothermal method by loading different amounts of ZnO onto the surface of Bi4V2O[Formula: see text]. The resulting ZnO/Bi4V2O[Formula: see text] composites showed excellent photocatalytic activity than that of pure ZnO under visible light irradiation. When the ratio of ZnO to Bi4V2O[Formula: see text] was 1:1 (ZB2), the photocatalytic activity was best, which could degrade RhB almost completely within 30[Formula: see text]min. The enhanced photocatalytic activity of ZnO/Bi4V2O[Formula: see text] composites could be mainly ascribed to the efficient charge separation and the increased specific surface area. Based on the experimental and bandgap calculations, a possible photocatalytic mechanism was proposed.

scholarly journals Boosting charge separation and nitrogen vacancies in graphitic carbon nitride by implanted strontium vanadate for highly efficient photocatalytic reduction of hexavalent chromium

RSC Advances ◽  
2021 ◽  
Vol 11 (26) ◽  
pp. 16034-16039
Author(s):  
Yuzhi Zhou ◽  
Shi-Zhao Kang ◽  
Lixia Qin ◽  
Xiangqing Li
Keyword(s):  
Photocatalytic Activity ◽  
Hexavalent Chromium ◽  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Photocatalytic Reduction ◽  
Graphitic Carbon Nitride ◽  
Highly Efficient ◽  
Excellent Photocatalytic Activity ◽  
Nitrogen Vacancies

A well-dispersed strontium vanadate implanted into graphitic carbon nitride showed excellent photocatalytic activity for Cr(vi) reduction. The improved charge separation owing to more nitrogen vacancies was the main reason for its enhanced activity.

Designed C3N4/CdS–CdWO4 core–shell heterostructure with excellent photocatalytic activity

2017 ◽  
Vol 41 (3) ◽  
pp. 1028-1036 ◽  
Author(s):  
Qizhao Wang ◽  
Yanbiao Shi ◽  
Yang Sun ◽  
Houde She ◽  
Jie Yu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Electric Field ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Core Shell ◽  
Excellent Photocatalytic Activity ◽  
Charge Separation Efficiency

Charge separation efficiency is improved by the enhanced built-in photogenerated electric field.

Subpicosecond Charge Separation Time Scale at Graphene Quantum Dot Surface

2020 ◽  
Vol 124 (44) ◽  
pp. 24115-24125
Author(s):  
Krishna Mishra ◽  
Ayendrila Das ◽  
Subhadip Ghosh
Keyword(s):  
Quantum Dot ◽  
Time Scale ◽  
Charge Separation ◽  
Graphene Quantum Dot ◽  
Separation Time

Graphene quantum dot sensitized leaf-like InVO4/BiVO4 nanostructure: a novel ternary heterostructured QD-RGO/InVO4/BiVO4 composite with enhanced visible-light photocatalytic activity

2015 ◽  
Vol 44 (44) ◽  
pp. 19185-19193 ◽  
Author(s):  
Xue Lin ◽  
Yushuang Wang ◽  
Jia Zheng ◽  
Chang Liu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Quantum Dot ◽  
Visible Light ◽  
Graphene Quantum Dot ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

A QD-RGO/InVO4/BiVO4 nanoheterostructure exhibiting enhanced photocatalytic activity was synthesized. The heterostructure included QD-RGO assembled on the surface of leaf-like InVO4/BiVO4.

NiAg-graphene quantum dot-graphene hybrid with high oxidase-like catalytic activity for sensitive colorimetric detection of malathion

2021 ◽  
Author(s):  
Xu Dan ◽  
Ruiyi Li ◽  
Qinsheng Wang ◽  
Yongqiang Yang ◽  
Haiyan Zhu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Quantum Dot ◽  
Colorimetric Detection ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene ◽  
Graphene Quantum Dot ◽  
Nickel Silver

The paper reports the synthesis of nickel-silver-graphene quantum dot-graphene hybrid. Histidine-functionalized graphene quantum dots (His-GQDs) were bonded to graphene oxide (GO) and then combined with Ni2+ and Ag+ to form...

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