Novel visible light induced Ag2S/g-C3N4/ZnO nanoarrays heterojunction for efficient photocatalytic performance

Feng, Yimeng; Wang, Yazi; Li, Mingyang; Lv, Shasha; Li, Wei; Li, Zhengcao

doi:10.1016/j.apsusc.2018.08.086

Cited by 39 publications

(21 citation statements)

References 35 publications

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“…The binding energy of the S 2p 3/2 peak located at 161.5 eV is in accordance with the binding energy of ZnS. The lowest energy peak of S 2p 3/2 is located at 160.93 eV, which corresponds to Ag 2 S [ 44 , 45 , 46 , 47 ]. These results illustrate that Ag 2 S/ZnS/ZnO nanocomposites were formed after immersion.…”

Section: Resultssupporting

confidence: 66%

Enhanced UV Photoresponsivity of ZnO Nanorods Decorated with Ag2S/ZnS Nanoparticles by Successive Ionic Layer Adsorption and Reaction Method

et al. 2021

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Recently, different kinds of energy band structures have been utilized to improve the photoelectric properties of zinc oxide (ZnO). In this work, ZnO nanorods were prepared by the hydrothermal method and then decorated with silver sulfide (Ag2S)/zinc sulfide (ZnS) via two-step successive ionic layer adsorption and reaction method. The photoelectric properties of nanocomposites are investigated. The results show that ZnO decorated with Ag2S/ZnS can improve the photocurrent of photodetectors from 0.34 to 0.56 A at bias of 9 V. With the immersion time increasing from 15 to 60 minutes, the photocurrent of photodetectors increases by 0.22 A. The holes in the valence band of ZnO can be transferred to the valence band of ZnS and Ag2S, which promotes the separation and suppresses the recombination of hole-electron pairs generated in ZnO. Moreover, electrons excited by ultraviolet (UV) light in Ag2S can also be injected into the conduction band of ZnO, which causes the photocurrent to increase more than the ZnO photodetector.

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Section: Resultssupporting

confidence: 66%

Enhanced UV Photoresponsivity of ZnO Nanorods Decorated with Ag2S/ZnS Nanoparticles by Successive Ionic Layer Adsorption and Reaction Method

et al. 2021

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Section: Mechanismmentioning

confidence: 99%

“…The proposed photocatalytic MB degradation mechanism over the CZS-25 photocatalyst under sunlight radiation is depicted in 75,76 The trapped holes on g-C 3 N 4 yield hydroxyl radicals (OHc) by reacting with H 2 O. 76,77 In addition, the accumulated h + in the VB of g-C 3 N 4 might directly degrade MB. [78][79][80][81][82] The produced (O 2 À and OHc) reactive species interact with the MB molecules and decompose them by following a sequence of redox reactions, as given by eqn (2)-( 6).…”

Section: Mechanismmentioning

confidence: 99%

Highly efficient visible light active Cu–ZnO/S-g-C₃N₄ nanocomposites for efficient photocatalytic degradation of organic pollutants

et al. 2021

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“…), then ltered to analyze the concentration of RhB dye using a UV-Vis spectrophotometer by the distinctive absorption peak at the range of ~554 nm [19]. The photodegradation e ciency of the as-given PCs was further extent as ensuing formula, E ciency (%) = (C 0 -C t )/C 0 *100, where C 0 and C t are the absorbance rate of RhB dye solution earlier and afterwards photodegradation actions [18,20]. Lastly, over the photo-degradation exercise, the PCs was separated by centrifuge from the reaction mixture and dry to succeed for the reusability assessments.…”

Section: Photocatalytic Activity For Rhb Dyementioning

confidence: 99%

Investigation on Cu2O Combined g-C3N4/ZnO Heterostructures For High-Performance Photocatalytic Dye Degradation Under Visible-Light Exposure

Rajendran

Sasireka

Priya

et al. 2021

Preprint

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To assess a highly effective recyclable for visible-light photocatalysts (PCs), in this work, as-formed a ternary g-C3N4-ZnO/Cu2O nanocomposite PCs which was aimed at the photo-degradation of RhB dye. The essential structural, morphological and optical performance of the nanocomposites (NCs) were categorized by XRD, FT-IR, FE-SEM with EDS, UV-Vis DRS absorption and PL spectra analysis. Photocatalytic actions of the as-obtained g-C3N4-ZnO/Cu2O PCs has remained remarkably upgraded, and those showed greater degradation rate than those of other as-obtained samples. Also, that specified existence of the heterojunction among the interfaces of g-C3N4 and ZnO/Cu2O hence developed the response of visible-light absorptions and separation efficacy of the photo-excited charges which heightened the photocatalytic events of the g-C3N4-ZnO/Cu2O PCs. The photo-degradation efficiency of RhB dye over g-C3N4, g-C3N4/ZnO, g-C3N4/Cu2O and g-C3N4-ZnO/Cu2O PCs were 36.4 %, 53 % and 66 %, and 91.4 % in 100 min, which was owing to the number of dye molecules adsorbed on the PCs under visible-light treatment. The recycling stability test was exposed, the g-C3N4-ZnO/Cu2O PCs exhibit a greater photocatalytic action after five reuses. Therefore, the eco-friendly PCs might be broadly useful to the treatment of dye polluted wastewater.

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Novel visible light induced Ag2S/g-C3N4/ZnO nanoarrays heterojunction for efficient photocatalytic performance

Cited by 39 publications

References 35 publications

Enhanced UV Photoresponsivity of ZnO Nanorods Decorated with Ag2S/ZnS Nanoparticles by Successive Ionic Layer Adsorption and Reaction Method

Enhanced UV Photoresponsivity of ZnO Nanorods Decorated with Ag2S/ZnS Nanoparticles by Successive Ionic Layer Adsorption and Reaction Method

Highly efficient visible light active Cu–ZnO/S-g-C₃N₄ nanocomposites for efficient photocatalytic degradation of organic pollutants

Investigation on Cu2O Combined g-C3N4/ZnO Heterostructures For High-Performance Photocatalytic Dye Degradation Under Visible-Light Exposure

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Novel visible light induced Ag2S/g-C3N4/ZnO nanoarrays heterojunction for efficient photocatalytic performance

Cited by 39 publications

References 35 publications

Enhanced UV Photoresponsivity of ZnO Nanorods Decorated with Ag2S/ZnS Nanoparticles by Successive Ionic Layer Adsorption and Reaction Method

Enhanced UV Photoresponsivity of ZnO Nanorods Decorated with Ag2S/ZnS Nanoparticles by Successive Ionic Layer Adsorption and Reaction Method

Highly efficient visible light active Cu–ZnO/S-g-C3N4 nanocomposites for efficient photocatalytic degradation of organic pollutants

Investigation on Cu2O Combined g-C3N4/ZnO Heterostructures For High-Performance Photocatalytic Dye Degradation Under Visible-Light Exposure

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Highly efficient visible light active Cu–ZnO/S-g-C₃N₄ nanocomposites for efficient photocatalytic degradation of organic pollutants