Active carbon/TiO2 composites for photocatalytic decomposition of benzoic acid in water and toluene in air

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43920551" target="_blank" >RIV/60461373:22310/22:43920551 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22350/22:43920551

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S092058612030434X?dgcid=author" target="_blank" >https://www.sciencedirect.com/science/article/pii/S092058612030434X?dgcid=author</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2020.06.048" target="_blank" >10.1016/j.cattod.2020.06.048</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Active carbon/TiO2 composites for photocatalytic decomposition of benzoic acid in water and toluene in air

Popis výsledku v původním jazyce

The present work describes the preparations of active carbon (AC) – titania composites with 2 different AC/TiO2 ratios, their characterization using SEM, BET, determination of particle size, and evaluation of adsorption ability and photocatalytic activity using benzoic acid (BA) in the aqueous phase and toluene in the gaseous phase. Composite materials based on AC/TiO2 were prepared from two types of active carbon (having a BET surface area of 1737 m2 g−1 and 890 m2 g−1, respectively) and TiO2 (P25, BET surface area 45 m2 g−1) by mixing. The main studied parameter was milling of AC. Immobilized photocatalyst films were prepared by drop-casting of aqueous composite suspensions on glass substrates and drying. The composite films prepared from milled AC have much better adhesion to substrate in aqueous media than those from non-milled AC, which is due to a decrease of particle size by about 1 order during milling. The ability of composites prepared from milled AC to remove BA was more than 2.5 times higher than that of composites from non-milled AC. In comparison with TiO2, prepared composites showed similar or higher photocatalytic activity and the irradiation of AC/TiO2 composites in aqueous suspensions resulted in the generation of a comparable concentration of the hydroxyl radical spin-adduct ([rad]DMPO-OH) as with TiO2. © 2020 Elsevier B.V.

Název v anglickém jazyce

Active carbon/TiO2 composites for photocatalytic decomposition of benzoic acid in water and toluene in air

Popis výsledku anglicky

The present work describes the preparations of active carbon (AC) – titania composites with 2 different AC/TiO2 ratios, their characterization using SEM, BET, determination of particle size, and evaluation of adsorption ability and photocatalytic activity using benzoic acid (BA) in the aqueous phase and toluene in the gaseous phase. Composite materials based on AC/TiO2 were prepared from two types of active carbon (having a BET surface area of 1737 m2 g−1 and 890 m2 g−1, respectively) and TiO2 (P25, BET surface area 45 m2 g−1) by mixing. The main studied parameter was milling of AC. Immobilized photocatalyst films were prepared by drop-casting of aqueous composite suspensions on glass substrates and drying. The composite films prepared from milled AC have much better adhesion to substrate in aqueous media than those from non-milled AC, which is due to a decrease of particle size by about 1 order during milling. The ability of composites prepared from milled AC to remove BA was more than 2.5 times higher than that of composites from non-milled AC. In comparison with TiO2, prepared composites showed similar or higher photocatalytic activity and the irradiation of AC/TiO2 composites in aqueous suspensions resulted in the generation of a comparable concentration of the hydroxyl radical spin-adduct ([rad]DMPO-OH) as with TiO2. © 2020 Elsevier B.V.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/LTACH17007" target="_blank" >LTACH17007: Kompozitní fotokatalyzátory na bázi TiO2 - aktivní uhlí pro čištění vody a vzduchu</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

0920-5861

Svazek periodika

388-389

Číslo periodika v rámci svazku

2022

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

417-423

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85087484598