Enhanced photocatalytic performance and stability of visible-light-driven Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst

2018 ◽  
Vol 42 (15) ◽  
pp. 12437-12448 ◽  
Author(s):  
Yingying Qin ◽  
Hong Li ◽  
Hongjun Dong ◽  
Changchang Ma ◽  
Xiuying Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Ag Nanoparticles ◽  
Carrier Transport ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Electron Hole ◽  
Visible Light Driven ◽  
Transport Channels ◽  
Deposition Techniques

A novel Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst was synthesized by combining the hydrothermal and photo-deposition techniques, where Ag nanoparticles as carrier transport channels significantly improve the separation efficiency of electron–hole pairs.

scholarly journals Construction of Ag3PO4/SnO2 Heterojunction on Carbon Cloth with Enhanced Visible Light Photocatalytic Degradation

2020 ◽  
Vol 10 (9) ◽  
pp. 3238
Author(s):  
Min Liu ◽  
Guangxin Wang ◽  
Panpan Xu ◽  
Yanfeng Zhu ◽  
Wuhui Li
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Photogenerated Electron ◽  
Carbon Cloth ◽  
Electron Hole ◽  
Step Process ◽  
Photogenerated Electrons ◽  
Rapid Transfer ◽  
Visible Light Photocatalytic

In this study, the Ag3PO4/SnO2 heterojunction on carbon cloth (Ag3PO4/SnO2/CC) was successfully fabricated via a facile two-step process. The results showed that the Ag3PO4/SnO2/CC heterojunction exhibited a remarkable photocatalytic performance for the degradation of Rhodamine B (RhB) and methylene blue (MB), under visible light irradiation. The calculated k values for the degradation of RhB and MB over Ag3PO4/SnO2/CC are 0.04716 min−1 and 0.04916 min−1, which are higher than those calculated for the reactions over Ag3PO4/SnO2, Ag3PO4/CC and SnO2/CC, respectively. The enhanced photocatalytic activity could mainly be attributed to the improved separation efficiency of photogenerated electron-hole pairs, after the formation of the Ag3PO4/SnO2/CC heterojunction. Moreover, carbon cloth with a large specific surface area and excellent conductivity was used as the substrate, which helped to increase the contact area of dye solution with photocatalysts and the rapid transfer of photogenerated electrons. Notably, when compared with the powder catalyst, the catalysts supported on carbon cloth are easier to quickly recycle from the pollutant solution, thereby reducing the probability of recontamination.

scholarly journals A Three-Component Hybrid Templated by Asymmetric Viologen Exhibiting Visible-Light-Driven Photocatalytic Degradation on Dye Pollutant in Maritime Accident Seawater

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 640
Author(s):  
Xueqiang Zhuang ◽  
Qiqi Wu ◽  
Xihe Huang ◽  
Haohong Li ◽  
Tianjin Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Dye Degradation ◽  
Chemical Pollutants ◽  
Degradation Ratio ◽  
Visible Light Driven ◽  
Charge Separation Efficiency ◽  
Photocatalytic Material ◽  
Absorption Zone

The increasing dangerous chemical pollutants led by shipping accidents call for the new pollutant treatment strategy. In this work, a new three-component hybrid {[(BiI6)I13]·2I3·(H-BPA)4}n (1) can be used in dye degradation in seawater. The highly interesting feature of 1 lies in its unique 1-D Z-shape [(BiI6)I13]n6− infinite chain constructed from the I···I contacts between mono-nuclear (BiI6)3− anions and I133− polyiodide anions. Finally, the hydrogen bonds between [(BiI6)I13]n6− polyanions and H-BPA2+ cations contribute to the formation a quasi-3-D network. Specifically, 1 exhibits the wide absorption zone from ultraviolet to visible regions and high charge-separation efficiency, hinting its application in visible-light catalysis. As expected, 1 represents photocatalytic activity for the degradation of rhodamine B in seawater with degradation ratio of 90%, and the photocatalytic performance is stable. This work might provide new photocatalytic material for pollutant treatment in shipping accidents.

Visible-light-driven TiO2/Ag3PO4 heterostructures with enhanced antifungal activity against agricultural pathogenic fungi Fusarium graminearum and mechanism insight

2017 ◽  
Vol 4 (1) ◽  
pp. 255-264 ◽  
Author(s):  
Bingkun Liu ◽  
Yongfei Xue ◽  
Jingtao Zhang ◽  
Bing Han ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Visible Light ◽  
Fusarium Graminearum ◽  
Separation Efficiency ◽  
Pathogenic Fungi ◽  
Electron Hole ◽  
Photocatalytic Disinfection ◽  
Visible Light Driven

TiO2/Ag3PO4 heterostructures improved the separation efficiency of electron–hole pairs and enhanced the photocatalytic disinfection efficiency for F. graminearum macroconidia.

Enhanced Photocatalytic Activity of GO-Ag@CoCN Composite for RhB Degradation under Visible Light Irradiation

2021 ◽  
Vol 1027 ◽  
pp. 76-80
Author(s):  
Meng Fan Ma ◽  
Ling Fang Qiu ◽  
Ping Li ◽  
Shu Wang Duo
Keyword(s):  
Photocatalytic Activity ◽  
Optical Property ◽  
Visible Light ◽  
Ag Nanoparticles ◽  
Separation Efficiency ◽  
Light Illumination ◽  
Electron Hole ◽  
Heterojunction Structure ◽  
Visible Light Illumination ◽  
Spr Effect

Ag nanoparticles and GO co-modified Co-g-C3N4 composites were prepared successfully. The visible-light adsorption of the optimized GO-Ag@Co-g-C3N4 was improved significantly by the SPR effect of Ag nanoparticles, and the separation efficiency of photo-induced electron-hole pairs of g-C3N4 was accelerated to a large extent by the heterojunction structure of the composite and the superior conductivity of GO. The optimized GO-Ag@CoCN showed promising degradation efficiency for RhB (10 mg/L) under visible light illumination (λ>420 nm) for 160 min, which was 130% and 16.5% higher than the performance using bare g-C3N4 and optimized Ag@Co-g-C3N4, respectively. This work provided a novel way for improving the optical property and photocatalytic activity of g-C3N4.

An in situ ion exchange grown visible-light-driven Z-scheme AgVO3/AgI graphene microtube for enhanced photocatalytic performance

2020 ◽  
Vol 44 (4) ◽  
pp. 1579-1587
Author(s):  
Yong Liang ◽  
Yuexing Chen ◽  
Li Lin ◽  
Maojun Zhao ◽  
Li Zhang ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Visible Light ◽  
Charge Separation ◽  
Photocatalytic Oxidation ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Visible Light Driven ◽  
Charge Separation Efficiency ◽  
Hydrothermal Methods

The visible-light-driven Z-scheme AgVO3/AgI graphene microtube is prepared by in situ ion exchange and hydrothermal methods for enhancing charge separation efficiency and photocatalytic oxidation ability.

An inverse opal TiO2/g-C3N4 composite with a heterojunction for enhanced visible light-driven photocatalytic activity

2019 ◽  
Vol 48 (10) ◽  
pp. 3486-3495 ◽  
Author(s):  
Juying Lei ◽  
Bin Chen ◽  
Weijia Lv ◽  
Liang Zhou ◽  
Lingzhi Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Separation Efficiency ◽  
Photogenerated Electron ◽  
Absorption Efficiency ◽  
Inverse Opal ◽  
Electron Hole ◽  
Visible Light Absorption ◽  
Visible Light Driven

An inverse opal TiO2/g-C3N4 composite with excellent photogenerated electron–hole separation efficiency and enhanced visible light absorption efficiency was constructed.

scholarly journals Metal-free C 60 /CNTs/g-C 3 N 4 ternary heterostructures: synthesis and enhanced visible-light-driven photocatalytic performance

2018 ◽  
Vol 5 (5) ◽  
pp. 172290 ◽  
Author(s):  
Xue Lin ◽  
Rui Zhao ◽  
Yang Xi ◽  
Xiangyu Li ◽  
Junyou Shi ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Carbon Materials ◽  
Organic Pollutant ◽  
Phase Method ◽  
Electron Hole ◽  
Metal Free ◽  
Visible Light Driven ◽  
Temperature Solution ◽  
Solution Phase Method

A metal-free C 60 /CNTs/g-C 3 N 4 nanoheterostructure with excellent visible-light photocatalysis for rhodamine B (Rh B) degradation has been reported. Via a convenient low-temperature solution-phase method, g-C 3 N 4 nanosheets can serve as substrate for dispersion of C 60 /CNTs. The loading of C 60 /CNTs onto g-C 3 N 4 nanosheets surfaces significantly enhanced visible-light-driven photocatalytic activity of g-C 3 N 4 catalyst, for oxidation of organic pollutant (Rh B, 100%). Excellent photocatalytic properties of C 60 /CNTs/g-C 3 N 4 can be predominantly attributed to the intimate interfacial contact among constructing compounds, increased specific surface area and enhanced light adsorption efficiency resulted from C 60 /CNTs carbon materials. Particularly, the synergistic heterostructure interaction remarkably hinders the electron–hole pairs recombination, giving rise to significantly enhanced photocatalytic performance of C 60 /CNTs/g-C 3 N 4 in comparison with other counterparts.

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