期刊文献+

聚电解质复合膜中原位合成纳米结构氧化铁中空微球并用于释氧光阳极(英文) 被引量:1

In Situ Synthesis of Nanoparticles within Polyelectrolytes Multilayer Films to Fabricate Nanostructured Hematite Hollow Microspheres Used for Oxygen-Evolving Photoanode
原文传递
导出
摘要 利用层层静电自组装技术,将PSS-Fe3+复合物与聚二烯丙基二甲基氯化铵(PDADMAC,Poly(diallyldimethylammonium)Chloride)交替吸附在三聚氰胺甲醛树脂(MF)微球外。以聚电解质复合层作为纳米反应器,原位合成了氧化铁纳米颗粒;高温热处理可将中心的MF微球去除,生成中空纳米结构的铁氧化物微球。TEM说明,中空微球具有单分散性;XRD说明纳米颗粒是α-Fe2O3,壁的孔径约为7 nm。在紫外灯开启和关闭时,由该氧化铁微球修饰的释氧光阳极会引起光电流的即时变化,显示该中空α-Fe2O3微球组成的薄膜具有灵敏的光电催化活性。 Alternating layers of PSS - Fe complexes and poly ( diallyldimethylammonium chloride) ( PD- DA) were assembled on the melamine formaldehyde (MF) microspheres by layerby -layer technique. Hematite nanoparticles were in situ synthesized within polyelectrolyte multilayer films ( PEMFs ) , and nanostructured hollow hematite microspheres were formed after the removal of MF template through further heating treatment. TEM showed that hollow microspheres were monodisperse; XRD showed that those nano - particles consisted by α- Fe203 with 7nm medium pores. Excitated by ultraviolet radiation, the nanostructured hematite hollow microsphcrcs used for oxygen -evolving photoanode can generate photoelectrons to induce photocurrent, which indicate its photoelcctriochemical oxidation activity.
出处 《功能材料与器件学报》 CAS CSCD 北大核心 2009年第4期384-388,共5页 Journal of Functional Materials and Devices
基金 National Natural Science Foundation(No.20676038) Key Project of Science and Technology for Ministry of Education(107045) the Special Projects for key laboratories in Shanghai(05DZ22302,06DZ22008)
关键词 原位合成 层层子组装 氧化铁纳米粒子 光电活性 In situ synthesis Layer - by - layer serf assembly hematite nanoparticles photoelectriochemical
  • 相关文献

参考文献13

  • 1Kidambi S, Bruening M L. Multilayered polyelectrolyte films containing palladium nanoparticles: synthesis, characterization, and application in selective hydrogenation [J]. Chem Mater, 2005, 17(5): 301 -307.
  • 2Lee D, Rubner M F, Cohen R E. Formation of nanoparticle -loaded microcapsules based on hydrogen- bonded multilayers[J]. Chem Mater, 2005, 17(5) : 1099 -1105.
  • 3Kidambi S, Dai J H, Li J, et al. Selective hydrogenation by Pd nanoparticles embedded in polyelectrolyte multilayers [J]. J Am Chem Soe, 2004, 126(9) : 2658 -2659.
  • 4Beecroft L L, Ober C K. Nanocomposite materials for optical applications[J]. Chem Mater, 1997, 9(6) : 1302 - 1317.
  • 5Sohn B H, Cohen R E, Papaefthymiou G C. Magnetic prop erties of iron oxide nanoclusters within microdomains of block copolymers[J]. J Magn Magn Mater, 1998, 182 (1 -2) : 216 -224.
  • 6Pulgrin C, Kiwi J. Iron oxide -mediated degradation, photodegradation, and biodegradation of aminophenols [ J ]. Langmuir, 1995, 11(2) : 519 -526.
  • 7Decher G. Fuzzy nanoassemblies: toward layered polymeric multicomposites[ J]. Science, 1997, 277:1232 - 1237.
  • 8Gaponik N, Radtchenko I, Sukhorukov G, et al. Luminescent polymer microcapsules addressable by a magnetic field [J]. Langmuir, 2004, 20(4) : 1449 - 1452.
  • 9Shi X Y, Shen M W, Mohwald H. Polyelectrolyte muhilayer nanoreactors toward the synthesis of diverse nanostructured materials[J]. Prog Polyin Sci, 2004, 29(10) : 987 -1016.
  • 10Zhang Suqiu, Zhu Yihua, Yang Xiaoling, et al. Fabrication of core - shell latex spheres with CdS/polyelectrolyte composite multilayers [ J ]. Colloid Surf A, 2005, 264 ( 1 -3) : 215 -218.

同被引文献3

引证文献1

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部