首页> 外文会议>Structure-Property Relationships of Oxide Surfaces and Interfaces II >Characterization of Porous Pt/Al_2O_3 Films Produced by Hybrid Gas-to-Particle Conversion and Chemical Vapor Deposition
【24h】

Characterization of Porous Pt/Al_2O_3 Films Produced by Hybrid Gas-to-Particle Conversion and Chemical Vapor Deposition

机译:混合气-颗粒转化和化学气相沉积法制备多孔Pt / Al_2O_3薄膜的表征

获取原文
获取原文并翻译 | 示例

摘要

A hybrid process, based upon gas-to-particle conversion and chemical vapor deposition, is presented as an alternative technique for producing porous films with the main advantage of solvent-free, low-substrate temperature operation. Starting from precursors of platinum acetylacetonate and aluminum acetylacetonate, nanoparticles were produced by chemical reaction followed by gas-to-particle conversion. Downstream of this reaction zone, these nanoparticles were collected via thermophoresis onto a cooled substrate forming a porous, nanocermet film that may have possible uses in catalytic, sensor, or coating applications. In this study, Pt/Alumina nanocermet films were produced by two routes: either simultaneous precursor injection processing or a layer-by-layer approach. Energy-dispersive X-ray spectroscopy revealed that this hybrid process results in reasonable control of the amount of Pt within each sample. From transmission electron spectroscopy images taken of films produced by simultaneous processing, Pt nanoparticles appear to be co-agglomerated with alumina. The results may identify changes that can be made to the process to improve properties, such as catalytic activity, in the nanocermet films.
机译:提出了一种基于气体-颗粒转化和化学气相沉积的混合工艺,作为生产多孔膜的替代技术,其主要优点是无溶剂,低底物温度操作。从乙酰丙酮铂和乙酰丙酮铝的前体开始,通过化学反应,然后进行气-粒转化,制备了纳米颗粒。在此反应区的下游,这些纳米颗粒通过热泳收集到冷却的基材上,形成多孔的纳米金属陶瓷膜,该膜可能在催化,传感器或涂层应用中具有潜在用途。在这项研究中,Pt / Alumina纳米金属陶瓷薄膜是通过两种途径生产的:同时进行前驱物注入工艺或逐层方法。能量色散X射线光谱学表明,这种混合过程可合理控制每个样品中Pt的量。从通过同时加工生产的薄膜拍摄的透射电子光谱图像中,Pt纳米颗粒似乎与氧化铝共凝聚。结果可以确定可对工艺进行的改变,以改善纳米金属陶瓷膜中的性质,例如催化活性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号