NDLI: High resolution electron microscopy analysis of Pt-nanoparticles embedded on crystalline TiO2

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High resolution electron microscopy analysis of Pt-nanoparticles embedded on crystalline TiO2

Content Provider	Scilit
Author	Arbiol, J. Ruiz, A. Cirera, A. Peiró, F. Cornet, A. Morante, J. R. Alimoussa, A. Casanove, M-J
Copyright Year	2018
Description	As it is well known, metal nanoparticles distributed on a $TiO_{2}$ surface can improve dramatically the reaction rate and selectivity of reaction in gas sensing. In this work, we studied the Pt particles embedded on crystalline $TiO_{2}$ nanopowders used as a semiconductor gas sensor. We prepared a wide set of $TiO_{2}$ samples grown at different temperatures and with different nominal Pt concentrations using the impregnation method. The aim of this study was to analyze the Pt distribution on the $TiO_{2}$ surface as well as the possible epitaxial relationships between the metal nanoparticles and the semiconductor oxide support. We used high-resolution electron microscopy (HRTEM) to study Pt nanoparticle morphology. The HRTEM images were compared with computer simulations to confirm the results obtained. In this way we used the EMS software package to create the image simulations. Our supercell files were created using INDEM, a homemade program developed in CEMES laboratories, which allowed us to build epitaxial structures between two different materials. Good epitaxial relationships were found for platinum nanoparticles smaller than 3 nm in diameter, which adopted a cuboctahedral morphology. Book Name: Microscopy of Semiconducting Materials 2001
Related Links	https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9781351074629-15&type=chapterpdf
Ending Page	72
Page Count	4
Starting Page	69
DOI	10.1201/9781351074629-15
Language	English
Publisher	Informa UK Limited
Publisher Date	2018-01-18
Access Restriction	Open
Subject Keyword	Book Name: Microscopy of Semiconducting Materials 2001 Atmospheric Sciences Tio2 Crystalline Hrtem Package Structures Build Epitaxial Nanoparticles Different Nominal Using Indem
Content Type	Text
Resource Type	Chapter

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