Understanding the Interactions of CO2 with Doped and Undoped SrTiO3.
SrTiO3 and doped SrTiO3 have a wide range of applications in different fields. For example, Rh-doped SrTiO3 has been shown to have photocatalytic activity for both hydrogen production and CO2 conversion. In this study, both undoped and Rh-doped SrTiO3 were synthesized by hydrothermal and polymerizable complex methods. Different characterizations techniques including X-ray photoelectron spectroscopy (XPS), XRD, Raman, and UV/Vis spectroscopy were utilized to establish correlations between the preparation methods and the electronic/structural properties of Rh-doped SrTiO3 . The presence of dopants and oxygen vacancies substantially influenced the CO2 interactions with the surface, as revealed by the in situ infrared spectroscopic study. The presence of distinctly different adsorption sites was correlated to oxygen vacancies and oxidation states of Ti and Rh.
Department of Material Science and Engineering, Stony Brook University, Stony Brook, New York, 11794, USA.
Qiyuan
0000-0002-8751-2003
Q
Wu
Department of Material Science and Engineering, Stony Brook University, Stony Brook, New York, 11794, USA.
Jiajie
J
Cen
Chemistry Department, Stony Brook University, Stony Brook, New York, 11794, USA.
Kenneth R
KR
Goodman
Chemistry Department, Stony Brook University, Stony Brook, New York, 11794, USA.|Chemistry Department, Brookhaven National Laboratory, Upton, New York, 11973, USA.
Michael G
MG
White
Department of Material Science and Engineering, Stony Brook University, Stony Brook, New York, 11794, USA.
Girish
G
Ramakrishnan
Department of Material Science and Engineering, Stony Brook University, Stony Brook, New York, 11794, USA. alexander.orlov@stonybrook.edu.
Alexander
A
Orlov
D002245:Carbon Dioxide / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012238:Rhodium / Q000737:chemistry; D013057:Spectrum Analysis / Q000379:methods; D013324:Strontium / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D010087:Oxides; D002245:Carbon Dioxide; D014025:Titanium; D012238:Rhodium; C119252:strontium titanium oxide; D013324:Strontium
SrTiO3; catalysis; doping; rhodium; surface modification