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The Surface Modification of Ag3PO4 using Tetrachloroaurate(III) and Metallic Au for Enhanced Photocatalytic Activity

1Department of Chemistry, Jenderal Soedirman University, Purwokerto, 53123, Indonesia

2Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan

Received: 20 Apr 2021; Revised: 30 Jul 2021; Accepted: 30 Jul 2021; Published: 20 Dec 2021; Available online: 13 Aug 2021.
Open Access Copyright (c) 2021 by Authors, Published by BCREC Group
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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The improvement of Ag3PO4 photocatalytic activity was successful by incorporating tetrachloroaurate(III) (AuCl4)  and metallic Au on the surface of Ag3PO4. The photocatalysts were synthesized using the coprecipitation and chemisorption method. Coprecipitation of Ag3PO4 was carried out under ethanol-water solution using the starting material of AgNO3 and Na2HPO4.12H2O. AuCl4 ion and metallic Au were incorporated on the surface of Ag3PO4 using a chemisorption method under auric acid solution. The photocatalysts were characterized using XRD, DRS, SEM, and XPS. The AuCl4 ion and metallic Au were simultaneously incorporated on the Ag3PO4 surface. The high photocatalytic activity might be caused by increasing the separation of hole and electron due to capturing photogenerated electrons by metallic Au and Au(III) as electron acceptors. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (


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Keywords: Chemisorption; Metallic Au; Photocatalyst; Silver Phosphate; Tetrachloroaurate(III)
Funding: Ministry of Research and Technology/National Research and Innovation Agency under contract 176/SP2H/AMD/LT/DRPM/2020

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Section: Original Research Articles
Language : EN
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