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

Uyi Sulaeman; Suhendar Suhendar; Hartiwi Diastuti; Roy Andreas; Shu Yin

doi:10.22146/ijc.48647

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

https://doi.org/10.22146/ijc.48647

Uyi Sulaeman^(1*), Suhendar Suhendar⁽²⁾, Hartiwi Diastuti⁽³⁾, Roy Andreas⁽⁴⁾, Shu Yin⁽⁵⁾

(1) Department of Chemistry, Universitas Jenderal Soedirman, Jl. dr. Soeparno 61, Karangwangkal, Purwokerto 53123, Indonesia
(2) Department of Chemistry, Universitas Jenderal Soedirman, Jl. dr. Soeparno 61, Karangwangkal, Purwokerto 53123, Indonesia
(3) Department of Chemistry, Universitas Jenderal Soedirman, Jl. dr. Soeparno 61, Karangwangkal, Purwokerto 53123, Indonesia
(4) Department of Chemistry, Universitas Jenderal Soedirman, Jl. dr. Soeparno 61, Karangwangkal, Purwokerto 53123, Indonesia
(5) Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan
(*) Corresponding Author

Abstract

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.

Keywords

Ag3PO4; glucose; hydroxyapatite; oxygen vacancy

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DOI: https://doi.org/10.22146/ijc.48647