陕西师范大学学报:自然科学版
陝西師範大學學報:自然科學版
협서사범대학학보:자연과학판
Journal of Shaanxi Normal University: Nat Sci Ed
2012年
2期
46-52
,共7页
杨曦%刘守信%徐超%齐晓君%党莉%吕海燕%韦聪聪
楊晞%劉守信%徐超%齊曉君%黨莉%呂海燕%韋聰聰
양희%류수신%서초%제효군%당리%려해연%위총총
纳米二氧化钛%聚N,N-二乙基胺基甲基丙烯酸乙酯(PDEAEMA)%贵金属%表面引发原子转移自由基聚合(SI-ATRP)%复合纳米微球
納米二氧化鈦%聚N,N-二乙基胺基甲基丙烯痠乙酯(PDEAEMA)%貴金屬%錶麵引髮原子轉移自由基聚閤(SI-ATRP)%複閤納米微毬
납미이양화태%취N,N-이을기알기갑기병희산을지(PDEAEMA)%귀금속%표면인발원자전이자유기취합(SI-ATRP)%복합납미미구
TiO2 nanoparticles poly(N N-diethylamino ethyl methacrylate)(PDEAEMA) noble metal surface-initiated atom transfer radical polymerization(SI-ATRP) composite nanoparticles
制备了一种由聚N,N-二乙基胺基甲基丙烯酸乙酯(PDEAEMA)介导、贵金属M(Pd,Pt,Au)纳米颗粒复合的二氧化钛(TiO2)纳米微球.将合成的多巴胺基引发剂通过羟基键合在纳米TiO2微球的表面,利用表面引发原子转移自由基聚合技术(SI-ATRP)将N,N-二乙基胺基甲基丙烯酸乙酯(DEAEMA)接枝在纳米TiO2微球表面形成PDEAEMA聚合物刷.PDEAEMA聚合物刷包覆在TiO2微球表面后进一步与碘代甲烷(CH3I)反应形成季铵化的聚电解质Q-PDEAEMA,Q-PDEAEMA与贵金属离子(如PdCl42-、AuCl4-、PtCl62-)进行离子交换后用硼氢化钠(NaBH4)还原后得TiO2-Q-PDEAEMA/M(0)复合纳米微球.贵金属颗粒粒径为2~10nm,且均匀分布于Q-PDEAEMA聚电解质刷中.红外、透射电镜(TEM)和EDS能谱等对所制备的复合纳米微球进行了表征.
製備瞭一種由聚N,N-二乙基胺基甲基丙烯痠乙酯(PDEAEMA)介導、貴金屬M(Pd,Pt,Au)納米顆粒複閤的二氧化鈦(TiO2)納米微毬.將閤成的多巴胺基引髮劑通過羥基鍵閤在納米TiO2微毬的錶麵,利用錶麵引髮原子轉移自由基聚閤技術(SI-ATRP)將N,N-二乙基胺基甲基丙烯痠乙酯(DEAEMA)接枝在納米TiO2微毬錶麵形成PDEAEMA聚閤物刷.PDEAEMA聚閤物刷包覆在TiO2微毬錶麵後進一步與碘代甲烷(CH3I)反應形成季銨化的聚電解質Q-PDEAEMA,Q-PDEAEMA與貴金屬離子(如PdCl42-、AuCl4-、PtCl62-)進行離子交換後用硼氫化鈉(NaBH4)還原後得TiO2-Q-PDEAEMA/M(0)複閤納米微毬.貴金屬顆粒粒徑為2~10nm,且均勻分佈于Q-PDEAEMA聚電解質刷中.紅外、透射電鏡(TEM)和EDS能譜等對所製備的複閤納米微毬進行瞭錶徵.
제비료일충유취N,N-이을기알기갑기병희산을지(PDEAEMA)개도、귀금속M(Pd,Pt,Au)납미과립복합적이양화태(TiO2)납미미구.장합성적다파알기인발제통과간기건합재납미TiO2미구적표면,이용표면인발원자전이자유기취합기술(SI-ATRP)장N,N-이을기알기갑기병희산을지(DEAEMA)접지재납미TiO2미구표면형성PDEAEMA취합물쇄.PDEAEMA취합물쇄포복재TiO2미구표면후진일보여전대갑완(CH3I)반응형성계안화적취전해질Q-PDEAEMA,Q-PDEAEMA여귀금속리자(여PdCl42-、AuCl4-、PtCl62-)진행리자교환후용붕경화납(NaBH4)환원후득TiO2-Q-PDEAEMA/M(0)복합납미미구.귀금속과립립경위2~10nm,차균균분포우Q-PDEAEMA취전해질쇄중.홍외、투사전경(TEM)화EDS능보등대소제비적복합납미미구진행료표정.
A new kind of TiO2-based ternary composite nanoparticles containing poly(N,N-diethylamino ethyl methacrylate)(PDEAEMA) and noble metal nanoparticles(Pd,Pt,Au) was prepared.PDEAEMA brushes was grafted from dopamine-based initiator anchored on TiO2 nanoparticles via surface-initiated atom transfer radical polymerization(SI-ATRP) at ambient conditions.The PDEAEMA brushes reacted with CH3I to form quaternized-PDEAEMA(Q-PDEAEMA) for exchange with metal anions(such as PdCl2-4,AuCl-4 or PtCl2-6).After that,the resultant was reducted by NaBH4 to form the noble metal nanoparticles on the surface.Fianlly,the ternary nanocomposites(TiO2 nanoparticles-Q-PDEAEMA /noble metal) were obtained.The results indicated that the size of the noble metal nanoparticles in nanocomposite is about 2-10 nm,uniformly distributed among polymer brushes.The obtained composite nanomaterials were characterized by FT-IR,TEM and EDS.