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Synthesis of Bi2O3/Ag3Po4 Composites and their Photocatalytic Activities under Visible Light Irradiation

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Abstract:

The Bi2O3/Ag3PO4 composites consisting of the monoclinic α-Bi2O3 and body-centered cubic Ag3PO4 were successfully synthesized by grinding Ag3PO4 and Bi2O3 mixtures in ethanol using an agate mortar, followed by calcination at 500°C for 5 hours, where the Ag3PO4 was synthesized by co-precipitation method using AgNO3 and NaH2PO4.2H2O as starting materials. The Bi2O3 content in the composite materials changed from 5 to 25 mol.%. The composites were characterized using XRD, DRS and BET specific surface area. The photocatalytic activities were evaluated using Rhodamin B degradation under visible light irradiation of blue LED (λ = 445 nm). The highest photocatalytic activities could be obtained at 5 mol.% Bi2O3 in Bi2O3/Ag3PO4 composite. The enhanced photocatalytic activity could be attributed to the effective separation of hole (h+) and electron (e-) pairs in the Bi2O3/Ag3PO4 composite.

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Periodical:

Advanced Materials Research (Volume 1112)

Pages:

163-167

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1112.163

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Online since:

July 2015

Authors:

Uyi Sulaeman, Estri Yunari, Ponco Iswanto, Shu Yin, Tsugio Sato

Keywords:

Ag3PO4, Bi2O3, Composite, Photocatalyst, Visible Light

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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