Facile synthesis of soft-templated carbon monoliths with hierarchical porosity for fast adsorption from liquid media

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901UPU" target="_blank" >RIV/61988987:17310/18:A1901UPU - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.micromeso.2018.06.024" target="_blank" >http://dx.doi.org/10.1016/j.micromeso.2018.06.024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.micromeso.2018.06.024" target="_blank" >10.1016/j.micromeso.2018.06.024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Facile synthesis of soft-templated carbon monoliths with hierarchical porosity for fast adsorption from liquid media

Popis výsledku v původním jazyce

An easy synthesis of carbon monoliths with hierarchical porosities is presented here combining phenolic sol-geland soft-templating methods (use of amphiphilic surfactant Pluronic F127 as mesopores template). By varyingthe synthesis conditions, purely microporous or micro-mesoporous or micro-meso-macroporous carbon materialswere obtained. While micropores and mesopores arise during the carbonisation, macropores formation occursduring the gelling step through a controlled macroscopic phase separation process. The same pyrolytic tem-perature was used to ensure comparable surface chemistry (proved by FTIR and TGA-MS measurements for thetemplated samples), textural properties were investigated by a group of techniques: TEM, CO2and N2sorption,Hg porosimetry and SAXS. The bene?t of the di?erent porosities was evidenced on blocs of 1-2.5 mm diameterby studying adsorption kinetic of phenol and methylene blue aqueous solutions. Due to comparable surfacechemistry of the templated samples, only their di?erence of porosity was considered as a decisive factor for thekinetics of adsorption. The relative role of each porosity was evidenced and quanti?ed. It was found that me-sopores are crucial for a fast transport of adsorptive into the adsorption sites (micropores/smaller mesopores)while the additional presence of macropores further accelerates the rate of sorption for both adsorptives.

Název v anglickém jazyce

Facile synthesis of soft-templated carbon monoliths with hierarchical porosity for fast adsorption from liquid media

Popis výsledku anglicky

An easy synthesis of carbon monoliths with hierarchical porosities is presented here combining phenolic sol-geland soft-templating methods (use of amphiphilic surfactant Pluronic F127 as mesopores template). By varyingthe synthesis conditions, purely microporous or micro-mesoporous or micro-meso-macroporous carbon materialswere obtained. While micropores and mesopores arise during the carbonisation, macropores formation occursduring the gelling step through a controlled macroscopic phase separation process. The same pyrolytic tem-perature was used to ensure comparable surface chemistry (proved by FTIR and TGA-MS measurements for thetemplated samples), textural properties were investigated by a group of techniques: TEM, CO2and N2sorption,Hg porosimetry and SAXS. The bene?t of the di?erent porosities was evidenced on blocs of 1-2.5 mm diameterby studying adsorption kinetic of phenol and methylene blue aqueous solutions. Due to comparable surfacechemistry of the templated samples, only their di?erence of porosity was considered as a decisive factor for thekinetics of adsorption. The relative role of each porosity was evidenced and quanti?ed. It was found that me-sopores are crucial for a fast transport of adsorptive into the adsorption sites (micropores/smaller mesopores)while the additional presence of macropores further accelerates the rate of sorption for both adsorptives.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Microporous and Mesoporous Materials

ISSN

1387-1811

e-ISSN

1873-3093

Svazek periodika

272

Číslo periodika v rámci svazku

272

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

155-165

Kód UT WoS článku

000445309600019

EID výsledku v databázi Scopus

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