Synthesis and characterization of Ag3PO4 immobilized with graphene oxide (GO) for enhanced photocatalytic activity and stability over 2,4-dichlorophenol under visible light irradiation

Chen, Xiaojuan; Dai, Yong; Wang, Xing-yan; Guo, Jing; Liu, Tan-hua; Li, Fenfang

doi:10.1016/j.jhazmat.2015.01.032

Cited by 123 publications

(27 citation statements)

References 36 publications

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“…5(b) shows the band gaps of samples by Tauc plots of (˛hv) 2 vs. hv. The direct band gap energy of the Ag 3 PO 4 is 2.45 eV, which is similar to the theoretical volumes of 2.43 eV [34]. The band gap of CPAN is 2.21 eV (shown in inset of Fig.…”

Section: Optical Properties Of As-prepared Samplessupporting

confidence: 83%

Cyclized polyacrynitrile modified Ag 3 PO 4 photocatalysts with enhanced photocatalytic activity under visible-light irradiation

Zheng

Luo

et al. 2015

Applied Surface Science

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Section: Optical Properties Of As-prepared Samplessupporting

confidence: 83%

Cyclized polyacrynitrile modified Ag 3 PO 4 photocatalysts with enhanced photocatalytic activity under visible-light irradiation

Zheng

Luo

et al. 2015

Applied Surface Science

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“…Degradation efficiency of MB dye under these scavengers is shown in Figure 10b. In the dark adsorption 30-min phase, the adsorption efficiency of MB dye decreased as the reactive species scavenger was added, which may be on account of the competitive adsorption between MB and the additives [56]. When OH• scavenger (TBA) or h + scavenger (EDTA-Na2) was added to the reaction system, the photocatalytic activity of MTGA obviously decreased from 93.4% down to 83.5% and 61.2%, respectively.…”

Section: Resultsmentioning

confidence: 99%

Effective Electron Transfer Pathway of the Ternary TiO2/RGO/Ag Nanocomposite with Enhanced Photocatalytic Activity under Visible Light

et al. 2017

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Abstract:Mesoporous TiO 2 /reduced graphene oxide/Ag (TiO 2 /RGO/Ag) ternary nanocomposite with an effective electron transfer pathway is obtained by an electrostatic self-assembly method and photo-assisted treatment. Compared with bare mesoporous TiO 2 (MT) and mesoporous TiO 2 /RGO (MTG), the ternary mesoporous TiO 2 /RGO/Ag (MTGA) nanocomposite exhibited superior photocatalytic performance for the degradation of methylene blue (MB) under visible light, and the degradation rate reached 0.017 min −1 , which was 3.4-times higher than that of MTG. What is more, the degradation rate of MTGA nanocomposite after three cycle times is 91.2%, and the composition is unchanged. In addition, we found that the OH•, h + and especially O 2•− contribute to the high photocatalytic activity of MTGA for MB degradation. It is proposed that Ag nanoparticles can form the local surface plasmon resonance (LSPR) to absorb the visible light and distract the electrons into MT, and RGO can accept the electrons from MT to accelerate the separation efficiency of photogenerated carriers. The establishment of MTGA ternary nanocomposite makes the three components act synergistically to enhance the photocatalytic performance.

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“…First, the high surface area of GO provides more active adsorption sites and photocatalytic reaction sites, which has the benefit of improving the photocatalytic activity. Second, GO acts as an effective acceptor of the photoexcited electrons, making ·O 2 − radicals produced by the reduction of O 2 molecules adsorbed on catalyst surface48.…”

Section: Resultsmentioning

confidence: 99%

Fabrication, Characterization and Response Surface Method (RSM) Optimization for Tetracycline Photodegration by Bi3.84W0.16O6.24- graphene oxide (BWO-GO)

Song

Wang

et al. 2016

Sci Rep

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RSM is a powerful tool for optimizing photocatalytic processes. The BWO-GO photocatalysts have been successfully synthesized via inorganic-salt-assisted hydrothermal method. XRD, TEM, FESEM, HRTEM and STEM are used to characterize BWO-GO heterojunction. UV-vis, PL, ESR and radical scavenger experiments are used to explore the photocatalysis mechanism. The photocatalysts are evaluated by TC photodegradation under visible light irradiation. And the main active species in TC photodegradation is ·O2−. Response surface methodology is used to optimize three key independent operating parameters, namely photocatalyst dosage (X1), percentages of GO (X2) and reaction time (X3), for TC photodegradation. The central composite design (CCD) is used to conduct experiments. The results showed that TC removal is significantly affected by the synergistic effect of linear term of X1 and X3. However, the quadratic terms of X12 and X32 had an antagonistic effect on T removal. The obtained RSM model (R2 = 0.9206) shows a satisfactory correlation between experimental and predicted values of TC removal. The optimized conditions is of 0.3 g photocatalyst dosage, 1.49 wt% GO loaded percentage and 90 min reaction time. Under this condition, theoretical prediction removal is 80.22% and the actual removal is 78.43%.

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Synthesis and characterization of Ag3PO4 immobilized with graphene oxide (GO) for enhanced photocatalytic activity and stability over 2,4-dichlorophenol under visible light irradiation

Cited by 123 publications

References 36 publications

Cyclized polyacrynitrile modified Ag 3 PO 4 photocatalysts with enhanced photocatalytic activity under visible-light irradiation

Cyclized polyacrynitrile modified Ag 3 PO 4 photocatalysts with enhanced photocatalytic activity under visible-light irradiation

Effective Electron Transfer Pathway of the Ternary TiO2/RGO/Ag Nanocomposite with Enhanced Photocatalytic Activity under Visible Light

Fabrication, Characterization and Response Surface Method (RSM) Optimization for Tetracycline Photodegration by Bi3.84W0.16O6.24- graphene oxide (BWO-GO)

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