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1、特殊形貌鎳氧化物納米粒子的制備摘要本文主要闡述了一種新的制備卜Ni(OH)2納米晶的方法及其表而改性的途徑。本文改變以往用以水為介質(zhì)的傳統(tǒng)做法,采用乙醇為反應(yīng)介質(zhì),以濃氨水、NaOH來使Ni?+離子沉淀,在水熱條件下得到了尺寸均一,微觀形貌可控p-Ni(OH)2納米晶;然后利用種子乳液聚合的方法對這些特殊形貌的納米晶進行表而改性。即以卜Ni(OH)2納米晶作為乳液聚合的晶種,使苯乙烯在其表而進行聚合,通過控制聚合時間,在體系屮引入甲基丙烯酸,最終得到表面富含竣基的p-Ni(OH)2納米晶陳苯乙烯納米復(fù)合物。表
2、而改性極大擴展了p-Ni(OH)2納米晶的應(yīng)用范圍。透射電境結(jié)果表明,用乙醇為反應(yīng)介質(zhì),以濃氨水、NaOH來使Ni?+離子沉淀,可以在水熱條件下得到了尺寸均一,微觀形貌可控p-Ni(OH)2納米晶;產(chǎn)物在乙醇溶劑中的較好的分散性直觀表明了復(fù)合物表面已經(jīng)引入親水性基團;紫外可見吸收光譜、紅外光譜分析進一步證明了我們己經(jīng)實現(xiàn)了P-Ni(OH)2納米晶/聚苯乙烯納米復(fù)合物的表面竣基化,而且不是簡單的物理混合。X射線衍射結(jié)果也有力地證明了p-Ni(OH)2納米晶的表面己經(jīng)實現(xiàn)了有機化。關(guān)鍵詞:納米晶,p-Ni(OH)
3、2,特殊形貌,種子聚合,功能化PREPARATIONANDCHARACTERIZATIONOFNi(OH)2NANOPARTICLESWITHSPECIALMORPHOLOGYABSTARACTSThisarticlemainlyexpatiateonanewmethodofpreparing卩-Ni(OH)2nanocrystalsandrealizingtheirsurfacemodification.Thetraditionalwayofusingwaterasmediumisreplacedbyusi
4、ngethanol.StrongaquaammoniaandNaOHareusedtosettleNiions.Onhydrothermalcondition卩?Ni(OH)2nanocrystalsinonesizeandtheirmicrocosmictopographycanbecontrolled.Thenthesurfacemodificationofthesenanocrystalswithspecialtopographycanberealizedbymeansofseedemulsionpol
5、ymerization.Tobeexact,卩?Ni(OH)2nanocrystalsareusedasseedcrystalofemulsionpolymerizationandcinnameneismadetopolymerizeonthesurface?Methacrylicacidisthenintroducedtothesystemaccordingtoourcontrolofthepolymerizingprocedureandatlast卩?Ni(0H)2nanocrystals(polysty
6、renenm?complexus)whichsurfaceisrichincarboxylareobtained?Thesurfacemodificationexpandstheappliedrangeof卩?Ni(OH)2nanocrystalstoalargeextent.TheresultoftransmissionelectronmicroscopyindicatesthatbyusingethanolasmediumandusingstrongaquaammoniaandNaOHtosettleNi
7、2+ions,onhydrothermalcondition,卩-Ni(OH)2nanocrystalsinonesizeandofwhichmicrocosmictopographycanbecontrolled?Theproducts5gooddispersivityinethanolsolventshowsdirectlythathydrophilicradicalhavealreadybeenintroducedtothesurfaceofthecomplexus?Theanalysisthoughu
8、ltravioletabsorptionspectrumandinfraredspectrumfurtherprovethatwehaverealizedthesurfacecarboxylationofp-Ni(OH)2nanocrystals(polystyrenenm-complexus)ratherthanjustphysicalblending.TheresultsofX-raydiffr