Facile synthesis of sulfate-doped Ag3PO4 with enhanced visible light photocatalystic activity

Cao, Wenrong; Gui, Zhenyou; Chen, Lifang; Zhu, Xuedong; Qi, Zhiwen

doi:10.1016/j.apcatb.2016.07.030

Cited by 73 publications

(22 citation statements)

References 41 publications

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“…They found an upward shift in CB of SO 4 À 2 doped Ag 3 PO 4 , enhancing the oxidizability of photogenerated (h + ). [57] A comparative study demonstrated a higher photooxidation ability of Ag 3 PO 4 prepared via precipitation and ion-exchange methods to remove dissolved humic acid. This was attributed to a larger surface area (12.7 m 2 • g À 1 ) of Ag 3 PO 4 after the precipitation technique, which was almost seven times larger than 1.2 m 2 • g À 1 after the ion-exchange process.…”

Section: Precipitation Methodsmentioning

confidence: 99%

“…investigated the electronic changes in Ag 3 PO 4 lattice on the substitution of PO 4 −2 by SO 4 −2 via a simple precipitation method. They found an upward shift in CB of SO 4 −2 doped Ag 3 PO 4 , enhancing the oxidizability of photogenerated (h + ) [57] . A comparative study demonstrated a higher photooxidation ability of Ag 3 PO 4 prepared via precipitation and ion‐exchange methods to remove dissolved humic acid.…”

Section: Potential and Limitations Of Ag3po4 For Visible‐light‐driven Water Splittingmentioning

confidence: 99%

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A Strategy to Develop Efficient Ag₃PO₄‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges

et al. 2021

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The escalating demands for energy sources and cumulative global environmental apprehensions have synergistically contributed to advancements in solar-driven technologies to utilize renewable energy resources. Photocatalytic water splitting, which is considered the most promising and sustainable process to harness solar energy for H 2 and O 2 evolution, is of particular interest. The photocatalytic performance of Ag 3 PO 4 is attributed to its visible-light active 2.43 eV band gap energy, tunable facet crystal structure, and high thermal stability. The suitable valence band (+ 2.85 V) potential of Ag 3 PO 4 is suggestive of its extraordinary oxidation capability. Herein, recent advances in preparation, characterization, and photocatalytic activity of silver orthophosphate (Ag 3 PO 4 ) based photocatalytic materials for water splitting are reviewed. The well-suited synthesis methods and rational engineering aspects for eliminating the significant limitations of self-photocorrosion and minimum absorption in the solar spectrum are highlighted. The achievement of Ag 3 PO 4 -based photocatalytic materials in water splitting is elaborately discussed, with the main focus on heterostructure formation, facet morphology, and plasmonic phenomena. Besides, some vital accomplishments in bandgap modulation and attaining the required surface energy to achieve an attractive yield of H 2 and O 2 in the region of visiblelight are also presented. Finally, a conclusive summary outlines this all-inclusive review with appropriate recommendations for photocatalytic water splitting to meeting a green approach shortly. We expect this comprehensive study could provide a guideline to tailor more efficient Ag 3 PO 4 -based photocatalytic materials with broad research prospects toward water splitting and other sustainable applications.

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Section: Precipitation Methodsmentioning

confidence: 99%

Section: Potential and Limitations Of Ag3po4 For Visible‐light‐driven Water Splittingmentioning

confidence: 99%

A Strategy to Develop Efficient Ag₃PO₄‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges

et al. 2021

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“…Among various AOPs, the photocatalytic method has become an emerging and promising method for the removal of antibiotics in aqueous environment. Titanium dioxide (TiO 2 ) is one of the most common used photocatalysts owing to its low cost, non-toxicity, mechanical robustness, and environmental friendliness [22,23]. However, the wide band gap (E g = 3.2 eV for anatase) and the high recombination rate of photogenerated electron-hole pairs (e − /h + ) became its two hindrances to high photocatalytic performance [24,25].…”

Section: •−mentioning

confidence: 99%

Photocatalytic degradation of flumequine by N-doped TiO2 catalysts under simulated sunlight

Zeng

Sun

Wang

2020

Environmental Engineering Research

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Flumequine (FLU) is one of the most used fluoroquinolone antibiotics in intensive aquaculture, however, it has become a typical pollutant in water environment at present due to inappropriate use. Therefore, it is necessary to develop facile techniques for efficient degradation of FLU. In this work, three N-doped TiO2 photocatalysts were synthesized for degradation of FLU. The obtained photocatalysts were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectrum and UV-Vis diffuse reflection spectra (UV-Vis-DRS). The XRD and XPS results from NH4NO3-doped catalyst (TiO2/AN) confirmed that NO3- ions were successfully incorporated into the lattice of TiO2. The TiO2/AN sample exhibited higher photocatalytic performance than other N-doped catalysts under simulated sunlight irradiation, and 100% removal efficiency of FLU was achieved after 4 hours of illumination. The photogenerated holes (h+) and hydroxyl radicals (•OH) are main reactive species involved in the photocatalytic degradation of FLU. Eight intermediates for photocatalytic degradation of FLU were detected and their toxicities to aquatic organisms were predicted. This study might have important implications for further research on the removal of fluoroquinolone antibiotics in wastewater.

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“…For example, Ag 3 PO 4 tetrahedron exposed (111) plane has high surface energy, and its photocatalytic activity was better than that of Ag 3 PO 4 exposed other crystal planes [12]. Doping SO 4 2-into Ag 3 PO 4 lattice could enhance the separation efficiency of charge carriers and tune the electronic structure of Ag 3 PO 4 , resulting in enhanced photocatalytic performance [13]. In addition, Ag 3 PO 4 coupled with other semiconductors to construct the heterojunctions, such as Ag 3 PO 4 /g-C 3 N 4 [14], Ag 3 PO 4 /Ag/In 2 O 3 [15], Ag 3 PO 4 /MoS 2 [16], and Ag 3 PO 4 /CuBi 2 O 4 [17], could enhance the photocatalytic activity and stability of Ag 3 PO 4 .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of organic contaminants by magnetic Ag3PO4/MFe2O4 (M = Zn, Ni, Co) composites: a comparative study and a new insight into mechanism

2020

J Mater Sci: Mater Electron

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A two-step hydrothermal method was used to synthesize Ag 3 PO 4 /MFe 2 O 4 (M = Zn, Ni, Co) composites, which were characterized in detail and employed as the visible light-response catalysts in the removal of different organic pollutants such as methyl orange (MO), methylene blue (MB), tetracycline (TC), and levofloxacin (LVF). Compared with Ag 3 PO 4 /ZnFe 2 O 4 and Ag 3 PO 4 /NiFe 2-O 4 , Ag 3 PO 4 /CoFe 2 O 4 showed a higher photocatalytic performance because of its larger BET surface area and higher separation rate of charge carriers. After exposure to visible light for 40 min, the efficiency of MO degradation by optimized Ag 3 PO 4 /CoFe 2 O 4 reached 94.8%, and the degradation efficiency of MB, TC, and LVF was 99.0%, 80.5%, and 75.5% after 60 min, respectively. Only MO was selected as the target contaminant, the visible light-driven catalytic activity of Ag 3 PO 4 /CoFe 2 O 4 was slightly higher than that of pure Ag 3 PO 4 . The magnetic Ag 3 PO 4 /CoFe 2 O 4 can be easily recovered and its recyclability was superior to bare Ag 3 PO 4 . Due to the narrow bandgap of MFe 2 O 4 (M = Zn, Ni, Co), the photoexcited holes and electrons cannot transfer to the surface of MFe 2 O 4 and participate in photocatalytic reaction, thus the reactive species generated in Ag 3 PO 4 /MFe 2 O 4 suspension were derived only from irradiated Ag 3 PO 4 . This study provided a new insight into the photocatalytic mechanism of Ag 3 PO 4 / MFe 2 O 4 (M = Zn, Ni, Co).

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Facile synthesis of sulfate-doped Ag3PO4 with enhanced visible light photocatalystic activity

Cited by 73 publications

References 41 publications

A Strategy to Develop Efficient Ag₃PO₄‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges

A Strategy to Develop Efficient Ag₃PO₄‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges

Photocatalytic degradation of flumequine by N-doped TiO2 catalysts under simulated sunlight

Photocatalytic degradation of organic contaminants by magnetic Ag3PO4/MFe2O4 (M = Zn, Ni, Co) composites: a comparative study and a new insight into mechanism

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Facile synthesis of sulfate-doped Ag3PO4 with enhanced visible light photocatalystic activity

Cited by 73 publications

References 41 publications

A Strategy to Develop Efficient Ag3PO4‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges

A Strategy to Develop Efficient Ag3PO4‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges

Photocatalytic degradation of flumequine by N-doped TiO2 catalysts under simulated sunlight

Photocatalytic degradation of organic contaminants by magnetic Ag3PO4/MFe2O4 (M = Zn, Ni, Co) composites: a comparative study and a new insight into mechanism

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A Strategy to Develop Efficient Ag₃PO₄‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges

A Strategy to Develop Efficient Ag₃PO₄‐based Photocatalytic Materials Toward Water Splitting: Perspectives and Challenges