Effect of Bi3+
on the Visible Light Photocatalyic Activity of AgInS2

Abstract

Abstract: AgInS2 and AgInS2 with different ratios of Bi3+（denoted as Bi-AgInS2） were prepared by the low temperature liquid method. The visible light photocatalytic activities of AgInS2 and Bi-AgInS2 were studied through the degradation of Rhodamine B（RhB） and 4-nitrophenol（PNP）. The experimental results displayed that the prepared samples without adding Bi3+ were orthorhombic phase AgInS2， while samples were face-centered cubic structure when different amount of Bi3+ were added into AgInS2. The addition of Bi3+ did not change the elements oxidation state in the AgInS2， but enhanced the binding ability of Ag+ to electrons， and weakened the binding ability of S2- to electrons. As the amount of Bi3+ increased， the visible light absorption abilities of the samples increased， but the emission intensities decreased. Bi-AgInS2 with the optimal ratio（Bi3+ ∶In3+=14.3∶2.7） showed the highest visible light photocatalytic activity for the degradations of RhB and PNP.

Key words:

"> AgInS2, Bi3+, Rhodamine B, 4-nitrophenol, visible light photocatalysis

CLC Number:

O611.3

Wang Jinxue, Wang Ying, Yan Ya.

Effect of Bi3+ on the Visible Light Photocatalyic Activity of AgInS2 [J]. Journal of Dali University, 2021, 6(12): 40-45.

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Effect of Bi3+ on the Visible Light Photocatalyic Activity of AgInS2

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