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Novel Method for Silver Nanowires Preparation from Electrospinning and Surface-enhanced Raman Scattering of Ag/PVA Nanofiber Composite  
Novel Method for Silver Nanowires Preparation from Electrospinning and Surface-enhanced Raman Scattering of Ag/PVA Nanofiber Composite
資料類型: PDF文件
關(guān)鍵詞: silver  nanowires  electrospinning  (agn03)  surface-enhanced  raman  poly  
(  vinyl  alcohol)  (pva)  silver  nitrate  scattering  
(sers)  
資料大小: 101K
所屬學(xué)科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
Anewandsimpleprocesstomanufacturesilvernanowiresandsurface-enhancedRamanscattering(SERS)substratebyelectrospinningtechniquehasbeensuccessfullydeveloped.ThisprocessutilitiedelectrospinningtechniquetoprepareAgN03/PVAprecursornanofiberfirstly.TheAg+ionswithinPVAnanofiberwerereducedtoone-dimensionalsilvernanowiresalongthefiber-templatebyheatingprocess.Weinvestigatedtheeffectsofreductiontemperatureonsilverwires,thenweusedthehighspeeddrawingdeviceasthecollectorintheelectrospinningsystemandinvestigatedtheeffectsofPVAchainorientationonthemorphologyofsilver.Finally,theAg/PVAnanofibercompositewasasSERSsubstrate.TherelationshipbetweenSERSintensityandthereductiontemperatureandPVAchainorientationhasbeeninvestigatedfor4-mercaptobenzoicacid(4-MBA)moleculeadsorbedonSERSsubstrate.SilvernanowireswerecharacterizedusingX-raydiffraction(XRD),transmissionelectronmicroscopy(TEM),andUV-Visabsorptionspectroscopy.TheresultsshowedthataspectratioofsilvernanowireswerecontrolledbytwoimportantfactorswhichwerereductiontemperatureandorientationofpolymerchaininPVAnanofiber.Thehighratioofsilvernanowireswasobtainedunderreductiontimewith5minutesat800Canddrawingspeedwas6000rpm.Then,theresultsalsoshowthatSERSintensityandmorphologyofsilverarecloselylinkedandinseparable.
作者: F. D. Lin, J. H. Chiu, J. W. Jhang, C. M. Wu
上傳時間: 2013-07-01 15:33:33
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