Solar photocatalytic water oxidation over Ag 3 PO 4 /g-C 3 N 4 composite materials mediated by metallic Ag and graphene

Cui, Xingkai; Tian, Lin; Xian, Xiaozhai; Tang, Hua; Yang, Xiaofei

doi:10.1016/j.apsusc.2017.07.290

Cited by 91 publications

(18 citation statements)

References 44 publications

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“…7a). The photocurrent of the PCN electrode was obviously larger than that of CN, indicating that the electron-hole pair separation efficiency was improved in protonated carbon nitride [61]. Moreover, the composite PCN-20 demonstrated the highest photocurrent intensity, possibly because the surface recombination of the photoinduced electrons and holes was significantly suppressed by the 2D MXene nanosheets with high electrical mobility.…”

Section: Resultsmentioning

confidence: 98%

In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

Xiao

Huang

et al. 2021

Chinese Journal of Catalysis

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186

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Section: Resultsmentioning

confidence: 98%

In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

Xiao

Huang

et al. 2021

Chinese Journal of Catalysis

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186

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“…The samples of Ag 3 PO 4 (SP) and defect-Ag/Ag 3 PO 4 (DMSP) showed the structure of a body-centered cubic (JCPDS No. 06-0505) [16] (Fig. 1(a)).…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Design of Defect and Metallic Silver in Silver Phosphate Photocatalyst Using the Hydroxyapatite and Glucose

et al. 2020

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The defect and metallic silver (Ag) in silver phosphate (Ag3PO4) photocatalyst were successfully generated using hydroxyapatite (HA) and glucose. Two steps of synthesis were done in these experiments. Firstly, the Ag/HA powder was prepared by reacting AgNO3 and HA, followed by the addition of a glucose solution. Secondly, the suspension of Ag/HA was reacted with AgNO3 aqueous solution. The yellow product of Ag/Ag3PO4 photocatalyst was produced. The products were characterized using X-Ray Diffraction (XRD), Diffuse Reflectance Spectroscopy (DRS), Scanning Electron Microscope (SEM), Brunauer–Emmett–Teller (BET) and X-ray Photoelectron Spectroscopy (XPS). The decreased ratio of O/Ag and metallic Ag formation observed by the XPS was detected as the possible defect and Ag-doping in the photocatalyst. The enhanced photocatalytic activity might be caused by the oxygen vacancy and metallic Ag in Ag3PO4 that enables the separation of photo-generated electrons and holes.

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“…To this end, the construction of semiconductor‐based composite photocatalysts presents a promising approach to facilitate the separation and transfer of photogenerated electrons and holes, where the narrow bandgap semiconductors, noble metals, and carbonaceous materials usually serve as electron acceptor or conductor. [ 163–167 ] Generally, narrow bandgap semiconductor can absorb the major parts of sunlight and generate more electrons. However, the lower CB position of most narrow bandgap semiconductors considerably diminishes their ability to transfer the photogenerated electrons to targeted acceptor and simultaneously weakens their reduction functionality.…”

Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

“…To effectively suppress the rapid recombination of photogenerated charge carriers on the semiconductor surface, the capture rate of photogenerated charge carriers must be promoted. To this end, the construction of semiconductor‐based composite photocatalysts presents a promising approach to facilitate the separation and transfer of photogenerated electrons and holes, where the narrow bandgap semiconductors, noble metals, and carbonaceous materials usually serve as electron acceptor or conductor 163–167. Generally, narrow bandgap semiconductor can absorb the major parts of sunlight and generate more electrons.…”

Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Kuang

Sayed

Fan

et al. 2020

Advanced Energy Materials

253

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Hydrogen (H2) has been deemed as the most promising and valuable alternative to nonrenewable fossil fuels. Photocatalytic and electrocatalytic water splitting are considered to be the most efficient and environmentally friendly approaches for the sustainable H2 evolution reaction (HER). Graphene with a 3D framework has been utilized for the HER due to its unique structure and properties, including its hierarchical network, large specific surface area, diverse pore distribution, outstanding light absorption ability, and excellent electrical conductivity. The large specific surface area and hierarchically porous structure of 3D graphene can not only maximize the exposure of active sites but also promote electron transfer and gas product diffusion. In addition, the free‐standing 3D graphene monolith is easily recycled compared with powder phase support, which can prevent the loss of active catalysts. By making full use of the aforementioned merits, 3D graphene‐based composite materials show great promise as high‐performance catalysts toward photocatalytic and electrocatalytic HER. In this review, recent advances in fabricating 3D graphene‐based composite materials and their applications in both photocatalytic and electrocatalytic HER are summarized and discussed. Furthermore, the current challenges and future vision associated with the design, fabrication, and integration of 3D graphene‐based composite materials toward HER are put forward.

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Solar photocatalytic water oxidation over Ag 3 PO 4 /g-C 3 N 4 composite materials mediated by metallic Ag and graphene

Cited by 91 publications

References 44 publications

In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

Design of Defect and Metallic Silver in Silver Phosphate Photocatalyst Using the Hydroxyapatite and Glucose

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

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Solar photocatalytic water oxidation over Ag 3 PO 4 /g-C 3 N 4 composite materials mediated by metallic Ag and graphene

Cited by 91 publications

References 44 publications

In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production

Design of Defect and Metallic Silver in Silver Phosphate Photocatalyst Using the Hydroxyapatite and Glucose

3D Graphene‐Based H2‐Production Photocatalyst and Electrocatalyst

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3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst