项目名称: 利用静电纺丝纳米纤维作为纳米反应器可控制备负载型贵金属纳米粒子及其催化性质研究
项目编号: No.51273075
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 一般工业技术
项目作者: 卢晓峰
作者单位: 吉林大学
项目金额: 80万元
中文摘要: 负载型贵金属纳米粒子催化剂的设计合成是目前基础科学研究的热点课题,如何实现小尺寸、具有特定形貌和暴露晶面的贵金属纳米粒子在特殊载体上的可控制备是相关研究的难点。在本项目中,我们提出利用静电纺丝纳米纤维作为纳米反应器来制备负载型贵金属纳米粒子。将静电纺丝半导体纳米纤维中具有氧化还原特性的导电高分子作为还原剂,利用半导体纳米纤维的限域作用或者作为电子通道在其内部或者表面可控制备贵金属纳米粒子。探讨贵金属纳米粒子在半导体纳米纤维载体上的成核生长规律,阐明静电纺丝纳米纤维中导电高分子的含量、分布、导电状态与贵金属纳米粒子的尺寸、形貌、暴露晶面等之间的关系。以负载型贵金属纳米粒子的催化研究为导向,探索静电纺丝半导体纳米纤维负载贵金属纳米粒子催化性质。系统研究贵金属纳米粒子的尺寸、组成、形貌、暴露晶面及其与载体之间的相互作用对催化剂性能的影响规律,为制备高效负载型贵金属纳米粒子催化剂提供重要依据。
中文关键词: 静电纺丝;贵金属纳米粒子;导电高分子;催化;
英文摘要: The study of supported noble metal nanoparticle catalyst is becoming one of the focus of scientific-researcher's attention now. It is a still challenge to prepare noble metal nanoparticles with small size, particular shape and exposed facets on the surface of supports. In this project, we have proposed to synthesis noble metal nanoparticles by using electrospun nanofibers as nanoreactors. We have incorporated conducting polymer into electrospun semiconductor metal oxides nanofibers, which could be as the reducing agents for the synthesis of noble metal nanoparticles. The semiconductor metal oxides afford the confinement environment or the electron transfer channel. Here, we will discuss the nucleation and growth of noble metal nanoparticles within or on the surface of electrospun metal oxide nanofibers, and illustrate the relationship between the content,dispersion and conduction state of conducting polymers and the size,morphology,exposed facets of the noble metal nanoparticles. In addition, we will study the catalytic properties of the electrospun metal oxide nanofibers supported noble metal nanoparticles. The relationship between the size,composition,morphology,exposed facets of the noble metal nanoparticles and the catalytic performance will be studied in detail. The effect of the interactions between the su
英文关键词: Electrospinning;noble metal nanoparticles;conducting polymer;catalysis;