Hierarchical assembly of graphene-bridged Ag3PO4/Ag/BiVO4 (040) Z-scheme photocatalyst: An efficient, sustainable and heterogeneous catalyst with enhanced visible-light photoactivity towards tetracycline degradation under visible light irradiation

Chen, Fei; Yang, Qi; Li, Xiaoming; Zeng, Guangming; Wang, Dongbo; Niu, Cheng-Gang; Zhao, Jianwei; An, Hongxue; Xie, Ting; Deng, Yaocheng

doi:10.1016/j.apcatb.2016.07.021

Cited by 766 publications

(196 citation statements)

References 48 publications

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“…The Ag 3d 5/2 and 3d 3/2 of Ag 3 PO 4 were located at 367.8 and 373.8 eV, which are consistent with the value of Ag + in the Ag 3 PO 4 [43]. The P 2p has a peak at 132.4 eV, corresponding to P 5+ in the Ag 3 PO 4 [15].…”

Section: Structure and Composition Of Ag3po4/g-c3n4 Photocatalystssupporting

confidence: 67%

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Synthesis of Ag3PO4/G-C3N4 Composite with Enhanced Photocatalytic Performance for the Photodegradation of Diclofenac under Visible Light Irradiation

et al. 2018

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Abstract:A new visible-light-driven heterojunction Ag 3 PO 4 /g-C 3 N 4 was prepared by a simple deposition-precipitation method for the degradation analysis of diclofenac (DCF), a model drug component, under visible-light irradiation. The heterojunction photocatalysts were characterized by a suite of tools. The results revealed that the introduction of Ag 3 PO 4 on the surface of g-C 3 N 4 greatly promoted its stability and light absorption performance. In addition, the effects of the heterojunction mixing ratios were studied, when the molar ratio of Ag 3 PO 4 to g-C 3 N 4 in the composite was 30%, the as-prepared photocatalyst Ag 3 PO 4 /g-C 3 N 4 (30%) possessed the best photocatalytic activity toward the photodegradation of DCF, and the optimal photocatalyst showed a DCF degradation rate of 0.453 min −1 , which was almost 34.8 and 6.4 times higher than those of pure g-C 3 N 4 (0.013 min −1 ) and Ag 3 PO 4 (0.071 min −1 ) under visible light irradiation (λ ≥ 400 nm). The trapping experimental results showed that h + , ·OH, and ·O 2 − were the main reactive oxygen species during the photocatalytic reaction. The improved performance of the composites was induced by the high charge separation efficiency of the photogeneration electron-hole pairs as well as the surface plasmon resonance (SPR) endowed in the Ag 0 nanoparticles, and ultimately enhanced the DCF photodegradation.

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Section: Structure and Composition Of Ag3po4/g-c3n4 Photocatalystssupporting

confidence: 67%

“…located at 367.8 and 373.8 eV, which are consistent with the value of Ag + in the Ag3PO4 [43]. The P 2p has a peak at 132.4 eV, corresponding to P 5+ in the Ag3PO4 [15]. The optical properties of the prepared photocatalysts were measured via UV-vis DRS.…”

Section: Structure and Composition Of Ag3po4/g-c3n4 Photocatalystssupporting

confidence: 53%

Synthesis of Ag3PO4/G-C3N4 Composite with Enhanced Photocatalytic Performance for the Photodegradation of Diclofenac under Visible Light Irradiation

et al. 2018

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“…10) To explore the underlying photocatalytic mechanism, RhB degradation was conducted under visible light irradiation [39], adding a hole (h + ) scavenger (ammonium oxalate ((NH 4 ) 2 C 2 O 4 )), a superoxide radical (•O 2− ) scavenger (1.4-benzoquinone, BQ) [40], or hydroxyl radical (•OH) scavengers (tert-Butanol, t-BuOH) [41]. Following the addition of BQ, no obvious decrease was observed, but an acceleration in the degradation rate was detected compared to that of Ag/BiV 0.9925-Mo 0.0075 O 4 (Fig.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Effects of Ag Nanoparticles/BiV1-xMoxO4 with Enhanced Photocatalytic Activity

Zhou

Meng

et al. 2017

Nanoscale Res Lett

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In recent years, BiVO 4 has drawn much attention as a novel photocatalyst given its excellent ability to absorb visible light. This work reports the development of Ag-modified BiV 1-x Mo x O 4 composites through a facile hydrothermal synthesis with the subsequent photoinduced reduction of Ag + at almost neutral pH conditions. Metallic Ag nanoparticles were deposited on the (040) facet of Mo-doped BiVO 4 powders. The crystal structure and morphology of the as-prepared samples were studied by XRD and SEM analyses. Moreover, the photocatalytic performance of BiVO 4 , Ag/BiVO 4 , and Ag-modified BiV 1-x Mo x O 4 were evaluated by the degradation of rhodamine B (RhB). The Ag/BiV 0.9925 Mo 0.0075 O 4 composite exhibited the most efficient photocatalytic performance. The present work provides greater insight into the application of BiVO 4 in the field of photocatalysis.

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“…Fortunately, some previous studies have proved that introducing electron mediators (including Au [21][22][23] , Ag [16,24,25] , reduced graphene oxide [26] and so on) at the interface between PS Ⅰ and PS Ⅱ could reduce the transmission impedance of electrons and improve electron transfer rate across the interface, in which electron mediators act as a transfer channel for carriers. Regrettably, because free electron and hole are photo-excited simultaneously at the surface of PS Ⅰ or PS Ⅱ, and the isotropic migration of photo-induced electron-hole pairs from the bulk to surface of each semiconductor, opposite charge carriers can accumulate inevitably in the surface and its density will gradually increase, inducing serious surface self-recombination [20] .…”

Section: Introductionmentioning

confidence: 98%

Construction of dual-channel for optimizing Z-scheme photocatalytic system

Zhang

Feng

Wang

et al. 2017

Applied Catalysis B: Environmental

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Hierarchical assembly of graphene-bridged Ag3PO4/Ag/BiVO4 (040) Z-scheme photocatalyst: An efficient, sustainable and heterogeneous catalyst with enhanced visible-light photoactivity towards tetracycline degradation under visible light irradiation

Cited by 766 publications

References 48 publications

Synthesis of Ag3PO4/G-C3N4 Composite with Enhanced Photocatalytic Performance for the Photodegradation of Diclofenac under Visible Light Irradiation

Synthesis of Ag3PO4/G-C3N4 Composite with Enhanced Photocatalytic Performance for the Photodegradation of Diclofenac under Visible Light Irradiation

Synergistic Effects of Ag Nanoparticles/BiV1-xMoxO4 with Enhanced Photocatalytic Activity

Construction of dual-channel for optimizing Z-scheme photocatalytic system

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