Microfluidic System for Synthesis of Trigonal Selenium Nanowires-中国期刊网

摘要 Amicrofluidicsystemwasdevelopedforthesynthesisoftrigonalselenium(t-Se)nanowires,whichwascomposedofaglassmicrochipcoupledwithapoly(methylmethacrylate)(PMMA)microchip.Intheglassmicrochip,amorphousselenium(a-Se)colloidwaspreparedbyreducingseleniousacidwithanexcessamountofhydrazineatatemperatureof100℃.InthecoupledPMMAmicrochip,a-Sewastransformedintomorestablet-Seseedsviasonicationatroomtemperature.Theresidencetimeofthereactantsinbothmicrochipswasoptimizedbyvaryingthedimensionandlengthofthemicrochanneleach.Thet-Senanowireswereformedbyanisotropicgrowthofseleniumcrystalliteduringsonicationandagingundertheassistanceofβ-cyclodextrin(β-CD).Variousstagesofthenanowires'growthwereinvestigated.Theas-synthesizedproductswerecharacterizedbypowderX-Raydiffraction(XRD),Ramanspectroscopy,scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM)andselected-areaelectrondiffraction(SAED).

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Microfluidic System for Synthesis of Trigonal Selenium Nanowires

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Microfluidic System for Synthesis of Trigonal Selenium Nanowires

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