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논문 기본 정보

자료유형
학술저널
저자정보
Myeongjun Ji (Seoul National University of Science and Technology) Young-In Lee (Seoul National University of Science and Technology)
저널정보
한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제22권 제4호
발행연도
2021.8
수록면
386 - 393 (8page)
DOI
10.36410/jcpr.2021.22.4.386

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In this study, Ag-ZnO heterojunction composite nanofibers with an average diameter of about 100 nm and coupled Agnanoparticles with a size of 10 nm were synthesized by facile electrospinning followed by thermal treatment whereby the Agcontent was tuned by controlling the precursor concentration. Rhodamine B (RhB) was employed as a representative dyepollutant to evaluate the ultraviolet (UV) and visible light photocatalytic activity of the pure ZnO and Ag-ZnO compositenanofibers. The photocatalytic activity of 1.5 at% Ag-ZnO nanofibers toward RhB degradation was the greatest,outperforming pure ZnO nanofiber by a factor of more than 5 times. Further increasing the Ag content led to lowerphotocatalytic activity, most likely due to the growth of the Ag nanoparticles. It was found that the enhanced photocatalyticactivity is caused by the heterojunction structure promoting the charge separation of the photogenerated charge carriers, whilethe effect of surface plasmon resonance by the Ag nanoparticles on the photoreactivity is insufficient. The Ag-ZnO nanofibersshow great promise as innovative and highly performing photocatalyst for photocatalytic waste-water treatment.

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