碳酸银光催化性能研究

doi:10.11962/1006-4990.2019-0251

Abstract

Abstract:

Silver-based photocatalysts have attracted extensive attention due to their good photocatalytic effects under visible light irradiation,which have simple preparation method and narrow band gap.Using Rhodamine B as a degradant,the photolytic degradation experiment was carried out by using silver carbonate（Ag₂CO₃） under simulated visible light to characterize its photocatalytic performance.The photocatalytic performance of Ag₂CO₃ and TiO₂ under the same conditions was compared.The photocatalytic activities of Ag₂CO₃ under the different pH,degradation concentration and Ag₂CO₃ mass were investigated and the mineralization degree was analyzed by using TOC.Ag₂CO₃ was characterized and its crystal phase composition was analyzed by X-ray diffractometry（XRD）,laser Raman spectroscopy（RRS）,Fourier transform infrared spectroscopy（FT-IR） and ultraviolet absorption spectroscopy（UV-Vis）.Results showed Ag₂CO₃ had the better photolytic degradation rate than TiO₂ under the same conditions.Under the conditions,such as solution pH of less than 7 and the Ag₂CO₃ dosage of 1 g/L,the photocatalytic degradation effect of catalyst on Rhodamine B with the mass concentration of 5 mg/L was the best.After 100 min of UV lamp irradiation,the degradation rate of Rhodamine B dye was above 98%,and the final mineralization rate was 66%.

Key words: Ag₂CO₃, Rhodamine B, photocatalyst

CLC Number:

TQ131.22

An Weijia,Xie Wanli. Study on photocatalytic performance of silver carbonate[J]. Inorganic Chemicals Industry, 2020, 52(3): 107-111.

Figures/Tables 6

References 32

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Inorganic Acid-Base-Salt Committee of CIESC

Study on photocatalytic performance of silver carbonate

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