Influence of Surface States on Gas Response Properties of Pt/TiO2
Source abstract
Abstract
通过浸渍法用H 2 PtCl 6 溶液修饰TiO 2 厚膜, 经过不同的处理工艺, 获得表面负载Pt粒子的Pt/TiO 2 厚膜. 采用XRD和SEM分析了Pt/TiO 2 的物相结构和表面形貌, 并通过电阻-氧分压关系计算Pt/TiO 2 厚膜活化能. 然后分别通过静态和动态测试法, 表征了Pt/TiO 2 厚膜在H 2 /O 2 中的稳态阻值和动态响应时间. 结果表明: 受“spill-over”机制影响, Pt/TiO 2 厚膜在H 2 /O 2 气氛下的稳态电阻与Pt的散布状态有关. 而样品响应时间不仅与Pt粒子的分布有关, 还受表面活化能的影响, 在Pt散布基本相同情况下, 活化能越低, 样品响应速度越快.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Analytical Chemistry and Sensors · Advanced Memory and Neural Computing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (16)
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