Effect of intercalated metal ions on the specific surface area and porosity of dibasic calcium silicate hydrate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F22%3APU146946" target="_blank" >RIV/00216305:26310/22:PU146946 - isvavai.cz</a>

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S2468023022005089?token=90B9514DC71F33DFF661320A642C0B1AB50E53194CEAE64A8440A7A43A38BADE8D766F7F06AB3CC4DA697CB22193BAEE&originRegion=eu-west-1&originCreation=20230117125516" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S2468023022005089?token=90B9514DC71F33DFF661320A642C0B1AB50E53194CEAE64A8440A7A43A38BADE8D766F7F06AB3CC4DA697CB22193BAEE&originRegion=eu-west-1&originCreation=20230117125516</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfin.2022.102243" target="_blank" >10.1016/j.surfin.2022.102243</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of intercalated metal ions on the specific surface area and porosity of dibasic calcium silicate hydrate

Popis výsledku v původním jazyce

This work aims to determine the influence of adsorbed Cu2+, Co2+, and Cr3+ ions on the porosity of synthetic calcium silicate hydrate by analyzing nitrogen adsorption and desorption isotherms. The calcium silicate hydrate sample was synthesized under saturated steam pressure at a 175 degrees C temperature when the duration of isothermal curing was 16 h. The intercalation of Cu2+, Co2+, or Cr3+ ions was based on the adsorption experiment at 25 degrees C temperature. It was obtained that after adsorption 100 mg of metal ions were intercalated in 1 g of the sample. The analysis of nitrogen adsorption-desorption isotherms showed, that the nature of intercalated metal ions strongly affects the specific surface area and porosity of adsorbent. It was calculated that the specific surfaces area of the adsorbent increases during adsorption of Cu2+ and Co2+ ions and decreases during adsorption of Cr3+ ions. During calcination, adsorbent and adsorbent with intercalated Co2+ ions became non-porous materials, while samples with intercalated Cr3+ and Cu2+ ions showed a different tendency. The classification of hysteresis loops and calculations by using the corrected Kelvin equation and Orr et al. scheme revealed that the shape of pores depends on the nature of adsorbate. The obtained results were confirmed by analysis of nitrogen adsorption-desorption isotherms as well as SEM and TEM analysis.

Název v anglickém jazyce

Effect of intercalated metal ions on the specific surface area and porosity of dibasic calcium silicate hydrate

Popis výsledku anglicky

This work aims to determine the influence of adsorbed Cu2+, Co2+, and Cr3+ ions on the porosity of synthetic calcium silicate hydrate by analyzing nitrogen adsorption and desorption isotherms. The calcium silicate hydrate sample was synthesized under saturated steam pressure at a 175 degrees C temperature when the duration of isothermal curing was 16 h. The intercalation of Cu2+, Co2+, or Cr3+ ions was based on the adsorption experiment at 25 degrees C temperature. It was obtained that after adsorption 100 mg of metal ions were intercalated in 1 g of the sample. The analysis of nitrogen adsorption-desorption isotherms showed, that the nature of intercalated metal ions strongly affects the specific surface area and porosity of adsorbent. It was calculated that the specific surfaces area of the adsorbent increases during adsorption of Cu2+ and Co2+ ions and decreases during adsorption of Cr3+ ions. During calcination, adsorbent and adsorbent with intercalated Co2+ ions became non-porous materials, while samples with intercalated Cr3+ and Cu2+ ions showed a different tendency. The classification of hysteresis loops and calculations by using the corrected Kelvin equation and Orr et al. scheme revealed that the shape of pores depends on the nature of adsorbate. The obtained results were confirmed by analysis of nitrogen adsorption-desorption isotherms as well as SEM and TEM analysis.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/GA19-16646S" target="_blank" >GA19-16646S: Potlačení negativního vlivu zinku v Portlandském cementu pomocí akcelerátorů hydratace</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

SURFACES AND INTERFACES

ISSN

2468-0230

e-ISSN

—

Svazek periodika

33

Číslo periodika v rámci svazku

OCT 2022

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

„“-„“

Kód UT WoS článku

000841481100002

EID výsledku v databázi Scopus

2-s2.0-85135385955