Microstructure-performance study of cerium-doped TiO2 prepared by using pressurized fluids in photocatalytic mitigation of N2O

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10314549" target="_blank" >RIV/00216208:11320/15:10314549 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27710/15:86095573 RIV/00216275:25310/15:39900537

Result on the web

<a href="http://dx.doi.org/10.1007/s11164-015-1985-6" target="_blank" >http://dx.doi.org/10.1007/s11164-015-1985-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11164-015-1985-6" target="_blank" >10.1007/s11164-015-1985-6</a>

Result language

angličtina

Original language name

Microstructure-performance study of cerium-doped TiO2 prepared by using pressurized fluids in photocatalytic mitigation of N2O

Original language description

Parent TiO2 and cerium-doped TiO2 photocatalysts with various Ce molar loadings (Ce0.05Ti0.95O2, Ce0.30Ti0.70O2) were prepared unconventionally using the sol-gel process controlled within the reverse micelles and the processing by pressurized hot fluids as an alternative to standard calcination. Purity, textural, micro/structural and optical properties of prepared photocatalysts were characterized by organic elementary analysis, nitrogen physisorption, powder X-ray diffraction, and DRS UV-Vis spectroscopy. The activity of developed cerium-doped TiO2 catalysts was investigated in the photocatalytic decomposition of N2O for the first time. It was revealed that photocatalysts processed by pressurized hot fluids show significantly improved textural properties and different crystallinity compared to their calcined analogues. Ce loading as well as the processing procedure had a key effect on the crystallization of CexTi1-xO2 materials. The maximum N2O conversion (77 % after 20 h of illumination) in inert gas was reached over the Ce0.05Ti0.95O2 photocatalyst and it can be attributed to the simultaneous N2O photocatalytic decomposition and N2O photolysis. Reaction kinetics of N2O photocatalytic decomposition was described well by the pseudo-first-rate law. The lower photocatalytic activity of the Ce0.30Ti0.70O2 photocatalyst compared to the Ce0.05Ti0.95O2 photocatalyst can be correlated with two factors; the lower disorder within anatase crystal structure and possible presence of some cerium-containing amorphous phase (e.g., CeO2 or CeTi2O6), which can partially block the surface active sites within the anatase crystal structure.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Research on Chemical Intermediates

ISSN

0922-6168

e-ISSN

—

Volume of the periodical

41

Issue of the periodical within the volume

12

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

9217-9231

UT code for WoS article

000365743300006

EID of the result in the Scopus database

2-s2.0-84953353511