Structure and Photocatalytic Properties of Ni-, Co-, Cu-, and Fe-Doped TiO₂ Aerogels

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU149878" target="_blank" >RIV/00216305:26620/23:PU149878 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2310-2861/9/5/357" target="_blank" >https://www.mdpi.com/2310-2861/9/5/357</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/gels9050357" target="_blank" >10.3390/gels9050357</a>

Result language

angličtina

Original language name

Structure and Photocatalytic Properties of Ni-, Co-, Cu-, and Fe-Doped TiO₂ Aerogels

Original language description

TiO2 aerogels doped with Ni, Co, Cu, and Fe were prepared, and their structure and photocatalytic activity during the decomposition of a model pollutant, acid orange (AO7), were studied. After calcination at 500 degrees C and 900 degrees C, the structure and composition of the doped aerogels were evaluated and analyzed. XRD analysis revealed the presence of anatase/brookite and rutile phases in the aerogels along with other oxide phases from the dopants. SEM and TEM microscopy showed the nanostructure of the aerogels, and BET analysis showed their mesoporosity and high specific surface area of 130 to 160 m2 g(-1). SEM-EDS, STEM-EDS, XPS, EPR methods and FTIR analysis evaluated the presence of dopants and their chemical state. The concentration of doped metals in aerogels varied from 1 to 5 wt.%. The photocatalytic activity was evaluated using UV spectrophotometry and photodegradation of the AO7 pollutant. Ni-TiO2 and Cu-TiO2 aerogels calcined at 500 degrees C showed higher photoactivity coefficients (kaap) than aerogels calcined at 900 degrees C, which were ten times less active due to the transformation of anatase and brookite to the rutile phase and the loss of textural properties of the aerogels.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/LTC20019" target="_blank" >LTC20019: New multi-component aerogels for environmental catalysis</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

Gels

ISSN

2310-2861

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

5

Country of publishing house

CH - SWITZERLAND

Number of pages

21

Pages from-to

1-21

UT code for WoS article

001011283100001

EID of the result in the Scopus database

2-s2.0-85160307893