Enhancement of photocatalytic performance via a P3HT-g-C3N4 heterojunction

2015 ◽  
Vol 3 (6) ◽  
pp. 2741-2747 ◽  
Author(s):  
Xiaojuan Bai ◽  
Changpo Sun ◽  
Songling Wu ◽  
Yongfa Zhu
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Photocatalytic Processes

Schematic illustration of charge separation and photocatalytic processes over g-C3N4 and P3HT-g-C3N4 photocatalysts under visible light irradiation.

Tuning the Photocatalytic Performance of Tungsten Oxide by Incorporating Cu3V2O8 Nanoparticles for H2 Evolution Under Visible Light Irradiation

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
M. B. Tahir ◽  
T. Iqbal ◽  
I. Zeba ◽  
A. Hasan ◽  
Shabbir Muhammad ◽  
...  
Keyword(s):  
Visible Light ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Green Energy ◽  
Light Irradiation ◽  
Composite Sample ◽  
Average Crystalline Size

Abstract The green energy production through water splitting under visible light irradiation has become an emerging challenge in the 21st century. Photocatalysis, being a cost-competitive and efficient technique, has grabbed much more attention for environmental applications, especially for hydrogen evolution. In this article, the hybrid Cu3V2O8-WO3 nanostructures were prepared through the hydrothermal method by using copper acetate, ammonium metavanadate, and Na2WO4 · 2H2O as precursors. The varying contents of Cu3V2O8 in WO3 were 0.2%, 0.5%, 1.0%, 2.0%, and 3.0%. The X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), UV-Vis, and photoluminescence (PL) emission spectroscopy were used to investigate the structural, morphological, surface area, and optical properties of prepared samples. The average crystalline size of the pure WO3 ranges from 10 to 15 nm and 70 to 195 nm for an optimal composite sample. The structural phase of the hybrid WO3-Cu3V2O8 nanoparticles was found to transfer from monoclinic to hexagonal by incorporating the Cu3V2O8 contents. The enhanced photocatalytic performance for hydrogen evolution was observed for 2% Cu3V2O8-WO3 composite sample. The key to this enhancement lies at the heterojunction interface, where charge separation occurs. In addition, the excellent photocatalytic activity was attributed to a higher surface area, efficient charge separation, and extended visible light absorption. This work provides an in-depth understanding of efficient separation of charge carriers and transfer processes and steer charge flow for efficient solar-to-chemical energy applications.

CdS/Ag2S/g-C3N4 ternary composites with superior photocatalytic performance for hydrogen evolution under visible light irradiation

2021 ◽  
Vol 50 (9) ◽  
pp. 3253-3260 ◽  
Author(s):  
Shan Zhao ◽  
Junbiao Wu ◽  
Yan Xu ◽  
Xia Zhang ◽  
Yide Han ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Synergic Effect

CdS/Ag2S/g-C3N4 ternary composites showed excellent photocatalytic performance toward H2 evolution. Their improved photocatalytic activity could be attributed not only to the synergic effect, but also to the introduction of Ag2S.

D–π–A-type triphenylamine dye covalent-functionalized g-C3N4 for highly efficient photocatalytic hydrogen evolution

2020 ◽  
Vol 10 (6) ◽  
pp. 1609-1618 ◽  
Author(s):  
Chao Zhang ◽  
Jiandong Liu ◽  
Xingliang Liu ◽  
Shiai Xu
Keyword(s):  
Reaction Mechanism ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient

Reaction mechanism for the higher photocatalytic performance of H2 production of g-C3N4NSs/TC1 under visible light irradiation (λ ≥ 400 nm).

One-step synthesis of CoO/g-C3N4 composites by thermal decomposition for overall water splitting without sacrificial reagents

2017 ◽  
Vol 4 (10) ◽  
pp. 1691-1696 ◽  
Author(s):  
Mumei Han ◽  
Huibo Wang ◽  
Siqi Zhao ◽  
Lulu Hu ◽  
Hui Huang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Overall Water Splitting ◽  
One Step ◽  
Good Photocatalytic Performance

10%CoO/g-C3N4 exhibits good photocatalytic performance under visible light irradiation without any sacrificial reagents.

Boosting the photocatalytic performance of (001) BiOI: enhancing donor density and separation efficiency of photogenerated electrons and holes

2016 ◽  
Vol 52 (30) ◽  
pp. 5316-5319 ◽  
Author(s):  
Wenjie Fan ◽  
Haibo Li ◽  
Fengyi Zhao ◽  
Xujing Xiao ◽  
Yongchao Huang ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Light Irradiation ◽  
Donor Density ◽  
Photogenerated Electrons ◽  
Bioi Nanosheets

BiOI nanosheets with highly exposed (001) and surface disorders are used for efficient photocatalytic HCHO oxidation under visible light irradiation.

SiO2@Ag/AgCl: a low-cost and highly efficient plasmonic photocatalyst for degrading rhodamine B under visible light irradiation

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64747-64755 ◽  
Author(s):  
Xuefeng Xu ◽  
Man Wang ◽  
Yanyan Pei ◽  
Changchun Ai ◽  
Liangjie Yuan
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
Light Irradiation ◽  
Nano Structure ◽  
Plasmonic Photocatalyst ◽  
Highly Efficient

The micro/nano-structure composite SiO2@Ag/AgCl was employed as a low cost photocatalyst for the degradation of RhB in aqueous solution under visible light irradiation, which exhibited excellent photocatalytic performance and stability.

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