Photocatalytic degradation of nitric oxide on various cerium doped TiO2 thin layers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F17%3A10238178" target="_blank" >RIV/61989100:27710/17:10238178 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Photocatalytic degradation of nitric oxide on various cerium doped TiO2 thin layers

Original language description

The photocatalytic methods for removal of nitrogen oxides have recently become very interesting research field. Photo-deNOx processes offer attractive method for the reduction of these harmful gases. The photocatalytic degradation of nitric oxide is a promising method, especially after finding the optimal photocatalyst, which will increase the efficiency of the method and allow the photocatalytic degradation of nitric oxide under visible light irradiation. This work describes photocatalytic degradation of nitric oxide using thin layers of cerium doped TiO2. TiO2 photocatalysts with cerium content of 0.7; 1.4 and 6.3 wt. % were prepared by the sol-gel method followed by calcination at 450 °C. Photocatalysts were coated on concrete blocks. Prepared thin layers were characterized by XRD, XRF, UV-Vis spectrometry and nitrogen physisorption. The photocatalytic measurements were carried out in the flow reactor constructed according the ISO 22197-1:2007. The addition of cerium led to an increase of specific surface area and decrease of absorption edge energies. Nevertheless, the specific surface area is not the decisive parameter in photocatalysis and the experimental results showed that the sample with the highest specific surface area was the least photocatalytically active. The most photocatalytically active thin layer for the decomposition of NO was the one containing 0.7 wt. % Ce. The highest conversion of NO in presence of this thin layer reached 27 % but only small part of NO was decomposed to O2 and N2. Majority of converted NO was oxidized to NO2 and NO3- and NO2- species.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/LO1208" target="_blank" >LO1208: Theoretical aspects of Energetic treatment of Waste and Environment Protection against negative impacts</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Name of the periodical

Waste Forum

ISSN

1804-0195

e-ISSN

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Volume of the periodical

2

Issue of the periodical within the volume

June

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

9

Pages from-to

46-54

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85031101129