| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7149355 | Sensors and Actuators B: Chemical | 2013 | 6 Pages |
Abstract
Platinum is widely used to modify TiO2 based gas sensing materials, and the promotion mechanism accompanied by praiseworthy results are discussed deeply. In this work, the growth mechanism of Pt dispersed on TiO2 thick film surface is discussed. The surface state of Pt is studied by XRD, XPS, SEM and Kröger-Vink defect theory in depth. Results indicate that Pt is not only dispersed on TiO2 thick film surface in metallic state but also occupy the lattice of Ti vacancy and form the oxidation state Ti1âxPtxO2. A simple model is proposed to explain the growth process of Pt and Ti1âxPtxO2.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Maolin Zhang, Zhanheng Yuan, Tao Ning, Jianping Song, Cheng Zheng,