Photocatalytic degradation of gaseous pollutants on nanostructured TiO2 films of various thickness and surface area

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43927964" target="_blank" >RIV/60461373:22310/23:43927964 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/23:39920413 RIV/60461373:22350/23:43927964 RIV/00216305:26620/23:PU148510

Result on the web

<a href="https://link.springer.com/article/10.1007/s43630-022-00359-0" target="_blank" >https://link.springer.com/article/10.1007/s43630-022-00359-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s43630-022-00359-0" target="_blank" >10.1007/s43630-022-00359-0</a>

Result language

angličtina

Original language name

Photocatalytic degradation of gaseous pollutants on nanostructured TiO2 films of various thickness and surface area

Original language description

This work deals with the preparation of TiO2 nanoparticulate layers of various mass (0.05 mg/cm2 to 2 mg/cm2) from three commercial nanopowder materials, P90, P25 and CG 300, their characterisation (profilometry, BET and SEM) and evaluation of their photocatalytic activity in the gaseous phase in a flow-through photoreactor according to the ISO standard (ISO 22197-2). Hexane was chosen as a single model pollutant and a mixture of four compounds, namely acetaldehyde, acetone, heptane and toluene was used for the evaluation of the efficiency of simultaneous removal of several pollutants. A linear dependence between the layer mass and the layer thickness for all materials was found. Up to a layer mass 0.5 mg/cm2, the immobilisation P90 and P25 powder did not result in a decrease in BET surface area, whereas with an increase in layer mass to 1 mg/cm2, a decrease of the BET surface was observed, being more significant in the case of P90. The photocatalytic conversion of hexane was comparable for all immobilised powders up to a layer mass of 0.5 mg/cm2. For higher layer mass, the photocatalytic conversion of hexane on P25 and P90 differ; the latter achieved about 30% higher conversion. In the case of the simultaneous degradation of four compounds, acetaldehyde was degraded best, followed by acetone and toluene; the least degraded compound was heptane. The measurement of released CO2 revealed that 90% of degraded hexane was mineralised to CO2 and water while for a mixture of 4 VOCs, the level of mineralisation was 83%. Graphical abstract: [Figure not available: see fulltext.] © 2023, The Author(s).

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/GA21-27243S" target="_blank" >GA21-27243S: Synthesis of large area TiO2 nanotube layers for effective photocatalytic degradation of pollutants in gas phase and viruses</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

PHOTOCHEMICAL &amp; PHOTOBIOLOGICAL SCIENCES

ISSN

1474-905X

e-ISSN

1474-9092

Volume of the periodical

22

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

883-892

UT code for WoS article

000926878400001

EID of the result in the Scopus database

2-s2.0-85147532742