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Rapid synthesis of MoS_(2)-Ag nanocomposites via photoreduction for optical tuning and surface-enhanced Raman scattering applications

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Journal of Materiomics 2023年第2期9卷 229-234页

作者： Yoonkyung Lee Eunpa kim Hyeongkeun kim kyunghoon kim School of Mechanical Engineering Sungkyunkwan UniversitySuwon16419Republic of Korea Samsung Electronics Semiconductor R&DAdvanced Manufacturing Engineering TeamPyeongtaek17786Republic of Korea Korea Electronics Technology Institute Seongnam13509Republic of Korea

Semiconductoremetal nanocomposites have been widely investigated to modify the intrinsic properties of materials used for optoelectronic devices and sensing *** this study,a method for rapid synthesis of MoS_(2)-Ag nanocomposites via laser-assisted photoreduction was *** the photoreduction process,we used AgNO_(3)solution as a metal *** laser irradiation,Ag ions were easily reduced on MoS_(2)by photo-generated electrons from MoS_(2).The optical properties of MoS_(2)-Ag nanocomposites were easily controlled by simple adjustment of the photoreduction *** investigate the surface-enhanced Raman scattering(SERS)effect of the MoS_(2)-Ag nanocomposites,the SERS spectra of methylene blue(MB)on MoS_(2)-Ag nanocomposites were measured,and the nanocomposites were found to enhance the Raman scattering intensity of MB up to~***,the laser-assisted photoreduction method has great potential for rapid synthesis and optical tuning of semiconductoremetal nanocomposites.

关键词： Molybdenum disulfide(MoS2) Silver(Ag) Photoreduction Optical tuning Surface-enhanced Raman scattering(SERS)

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Polydopamine/carbon nanotube nanocomposite coating for corrosion resistance

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Journal of Materiomics 2020年第1期6卷 158-166页

作者： Min-Sung Hong Yunjeong Park Teayeop kim kyunghoon kim Jung-Gu kim School of Advanced Material Science and Engineering Sungkyunkwan University(SKKU)Suwon16419Republic of Korea School of Mechanical Engineering Sungkyunkwan University(SKKU)Suwon16419Republic of Korea

Carbon nanotube(CNT)has excellent properties as a coating ***,most methods for CNT coating have *** studies have shown that polydopamine(PDA)can be used as a good and eco-friendly corrosion resistance coating ***,the effect of PDA/CNT nanocomposite coating on the corrosion mitigation property of carbon steel(CS)remains ***,the objective of this study was to determine the effect of PDA/CNT nanocomposite coating on the corrosion mitigation property of carbon steel(CS).A dopamine(DA)/CNT composite was first *** length was controlled by *** on dynamic light scattering,field emission transmission electron microscopy,and atomic force microscopy analyses,average lengths of CNTs in long and short DA-CNTs were 500 and 50 nm,*** steel specimens were subjected to corrosion resistance analysis using electrochemical *** of electrochemical tests showed that corrosion resistance of CS coated with PDA and PDA/CNTs were dramatically higher than those of bare *** corrosion mitigation was attributed to two ***,PDA decreased the corrosion rate due to the generation of a thin and dense layer on the ***,CNTs suppressed the cathodic partial reaction due to oxygen adsorption at defect sites of CNTs.

关键词： Polydopamine(PDA) Carbon nanotube(CNT) Corrosion Coating Nanocomposite Electrochemical analysis

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Photodeposited metal-semiconductor nanocomposites and their applications

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Journal of Materiomics 2018年第2期4卷 83-94页

作者： Yoonkyung Lee Eunpa kim Yunjeong Park Jangho kim WonHyoung Ryu Junsuk Rho kyunghoon kim School of Mechanical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea Semiconductor R&D Center Samsung ElectronicsHwaseong 18448Republic of Korea Department of Rural and Biosystems Engineering Chonnam National UniversityGwangju 61186Republic of Korea Department of Mechanical Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea

While two-dimensional layered nanomaterials including transition metal oxides and transition metal dichalcogenides have been widely researched because of their unique electronic and optical properties,they still have some *** overcome these limitations,transition metal oxides and transition metal dichalcogenides based nanocomposites have been developed using various methods and have exhibited superior *** this paper,we introduce the photodeposition method and review the photodeposition of metal nanoparticles on the surface of transition metal oxide and transition metal *** current applications are also explained,such as photocatalysis,hydrogen evolution reaction,surface enhanced Ramanscattering,*** approach for nanocomposites has potential for future research areas such as photocatalysis,hydrogen evolution reaction,surface enhanced Raman scattering,and other *** approach for nanocomposite has the potential for future research areas.

关键词： Photodeposition Nanocomposite Transition metal oxide Transition metal dichalcogenide

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