Use of Mn doping to suppress defect sites in Ag                         3                         PO                         4: Applications in photocatalysis

Mohammad Afif; Uyi Sulaeman; Anung Riapanitra; Roy Andreas; Shu Yin

doi:10.1016/j.apsusc.2018.10.049

Use of Mn doping to suppress defect sites in Ag ₃ PO ₄: Applications in photocatalysis

Mohammad Afif, Uyi Sulaeman, Anung Riapanitra, Roy Andreas, Shu Yin

Center for Exploration of New Inorganic Materials

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The highly active Mn-doped Ag ₃ PO ₄ photocatalyst was successfully synthesized under coprecipitation method using AgNO ₃ , Na ₂ HPO ₄ ·12H ₂ O, and MnSO ₄ ·H ₂ O, followed by annealing. The products were characterized using the SEM, XRD, DRS, XPS, and BET. The results showed that the Mn doping decreased the broad absorption in the visible region and increased the atomic ratio of O/Ag. The hydroxyl defects and oxygen vacancies can be suppressed by Mn doping and the photocatalytic activity under visible light irradiation could be improved. This excellent photocatalytic activity was caused by decreasing the recombination of electron and holes due to suppressing the defect sites in the surface of Ag ₃ PO ₄ .

Original language	English
Pages (from-to)	352-357
Number of pages	6
Journal	Applied Surface Science
Volume	466
DOIs	https://doi.org/10.1016/j.apsusc.2018.10.049
Publication status	Published - 2019 Feb 1

Keywords

Ag PO
Defect sites
Hydroxyl defect
Mn doping
Oxygen vacancy
Photocatalysis

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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title = "Use of Mn doping to suppress defect sites in Ag 3 PO 4: Applications in photocatalysis",

abstract = " The highly active Mn-doped Ag 3 PO 4 photocatalyst was successfully synthesized under coprecipitation method using AgNO 3 , Na 2 HPO 4 ·12H 2 O, and MnSO 4 ·H 2 O, followed by annealing. The products were characterized using the SEM, XRD, DRS, XPS, and BET. The results showed that the Mn doping decreased the broad absorption in the visible region and increased the atomic ratio of O/Ag. The hydroxyl defects and oxygen vacancies can be suppressed by Mn doping and the photocatalytic activity under visible light irradiation could be improved. This excellent photocatalytic activity was caused by decreasing the recombination of electron and holes due to suppressing the defect sites in the surface of Ag 3 PO 4 . ",

keywords = "Ag PO, Defect sites, Hydroxyl defect, Mn doping, Oxygen vacancy, Photocatalysis",

author = "Mohammad Afif and Uyi Sulaeman and Anung Riapanitra and Roy Andreas and Shu Yin",

year = "2019",

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doi = "10.1016/j.apsusc.2018.10.049",

language = "English",

volume = "466",

pages = "352--357",

journal = "Applied Surface Science",

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T1 - Use of Mn doping to suppress defect sites in Ag 3 PO 4

T2 - Applications in photocatalysis

AU - Afif, Mohammad

AU - Sulaeman, Uyi

AU - Riapanitra, Anung

AU - Andreas, Roy

AU - Yin, Shu

PY - 2019/2/1

Y1 - 2019/2/1

N2 - The highly active Mn-doped Ag 3 PO 4 photocatalyst was successfully synthesized under coprecipitation method using AgNO 3 , Na 2 HPO 4 ·12H 2 O, and MnSO 4 ·H 2 O, followed by annealing. The products were characterized using the SEM, XRD, DRS, XPS, and BET. The results showed that the Mn doping decreased the broad absorption in the visible region and increased the atomic ratio of O/Ag. The hydroxyl defects and oxygen vacancies can be suppressed by Mn doping and the photocatalytic activity under visible light irradiation could be improved. This excellent photocatalytic activity was caused by decreasing the recombination of electron and holes due to suppressing the defect sites in the surface of Ag 3 PO 4 .

AB - The highly active Mn-doped Ag 3 PO 4 photocatalyst was successfully synthesized under coprecipitation method using AgNO 3 , Na 2 HPO 4 ·12H 2 O, and MnSO 4 ·H 2 O, followed by annealing. The products were characterized using the SEM, XRD, DRS, XPS, and BET. The results showed that the Mn doping decreased the broad absorption in the visible region and increased the atomic ratio of O/Ag. The hydroxyl defects and oxygen vacancies can be suppressed by Mn doping and the photocatalytic activity under visible light irradiation could be improved. This excellent photocatalytic activity was caused by decreasing the recombination of electron and holes due to suppressing the defect sites in the surface of Ag 3 PO 4 .

KW - Ag PO

KW - Defect sites

KW - Hydroxyl defect

KW - Mn doping

KW - Oxygen vacancy

KW - Photocatalysis

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