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        Monitoring the photoinduced surface catalytic coupling reaction and environmental exhaust fumes with an Ag/PDA/CuO modified 3D glass microfiber platform

        Pei-Ying Lin,Gongchun He,Jyunde Chen,Atul Kumar Dwivedi,Shuchen Hsieh 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.82 No.-

        We demonstrate an efficient plasmon catalytic activity of a newly constructed metal–molecular–semiconductor, SERS substrate Ag/PDA/CuO@GMF. The support of tubular GMF surface and strongadhesion of PDA layer provided a uniform and well-packed distribution of Ag NPs and CuO to derive anefficient surface plasmon catalytic activity of Ag/PDA/CuO@GMF for the conversion of 4-Nitrothiophenol(4-NTP) to 4,40-Dimercaptoazobenzene (4,40-DMAB). Significant surface-enhanced Raman scattering(SERS) signal of 4,40-DMAB and efficient catalytic activities of Ag/PDA/CuO@GMF were related to thecombined cofactors, (a) a long-range electromagnetic effect of Ag NPs and (b) a stimulated chargetransfer due to the presence of CuO and Ag NPs. In addition, charge redistributions among adsorbent 4,40-DMAB and metal segments (Ag and CuO) via PDA played an important role in obtaining enhanced surfaceplasmon induced catalytic activities. Moreover, we utilized the structural properties of the 3D microfiberto enhance the applicability of the substrate. It was further demonstrated that the substrate could be usedto adsorb and detect the gaseous pollutants in the environment, thus providing an effective method forrapid on-site analysis.

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