Facile Synthesis of Ag/AgCl Grafted AgBi(MoO4)2 with Enhanced Photocatalytic Performance Under Visible Light

Xu Yan; Ziyang Wu; Yong Zhao; Biao Liu; Yong Zhao

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자료유형: 학술저널

저자정보: Xu Yan (Henan University) Ziyang Wu (Jiangsu University) Yong Zhao (Jiangsu University) Biao Liu (Henan University) Yong Zhao (Jiangsu University)

저널정보: 성균관대학교 성균나노과학기술원 NANO NANO Vol.13 No.8

발행연도: 2018.1

수록면: 18 - 28 (11page)

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Silver nanoparticles (NPs) and related semiconductors are a family of very important and widely applied photocatalysts. However, the preparation of high stability and activity of this photocatalyst is still a challenge. In this work, we report a stable Ag/AgCl/AgBi(MoO4)2 heterojunction photocatalyst fabricated via a simple in situ anion-exchange reaction followed by the photoreduction treatment. In the treatment of tetracycline (TC) wastewater under visible light, the AC-0.4 sample (prepared with 0.4 mmol KCl) exhibits the significantly improved activity (degradation ratio, DR of 71.3%) compared with the pristine AgBi(MoO4)2 (30% DR) and Ag/AgCl sample (synthesized by the photoreduction of AgCl) (37% DR) under identical experimental conditions. This activity promotion is from the fast interfacial electron transfer between the heterojunction phases of AgCl/AgBi(MoO4)2 and the SPR effect of Ag NPs. After five successive recycles, the AC-0.4 sample still maintains good stability and activity for TC degradation, which shows a great potential to be used in practical application. Through the ESR and controlled scavenged experiments, we found the · OH and · O- 2 are the major reactive intermediate species in the TC photodegradation reaction. Our work provides a new insight into the synthesis of stable and high efficient Ag-based heterojunction photocatalysts for the application of wastewater treatment.

참고문헌 (40)

참고문헌 신청

X. B. Li / 2018 / Angew. Chem. Int. Ed 57:6848

R. Kuriki / 2018 / J. Am. Chem. Soc 140:6648

W. Y. Lei / 2017 / Chem. Soc. Rev 46:3492

Y. F. Zhang / 2018 / ACS Sustain. Chem. Eng 6:3840

G. Zhang / 2016 / Chem. Soc. Rev 45:5951

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