Detail publikace

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

DAMBRAUSKAS, T. DAVIDOVICIENE, D. BALTAKYS, K. EISINAS, A. JASKUNAS, A. ŠILER, P. RUDELIS, V. ŠVEDAITĖ, E.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Calcium silicate hydrate; Adsorption-desorption isotherms; BET analysis; Specific surface area; Transitions metal ions

Autoři

DAMBRAUSKAS, T.; DAVIDOVICIENE, D.; BALTAKYS, K.; EISINAS, A.; JASKUNAS, A.; ŠILER, P.; RUDELIS, V.; ŠVEDAITĖ, E.

Vydáno

29. 7. 2022

Nakladatel

ELSEVIER

Místo

AMSTERDAM

ISSN

2468-0230

Periodikum

SURFACES AND INTERFACES

Ročník

33

Číslo

OCT 2022

Stát

Nizozemsko

Strany počet

11

URL

https://reader.elsevier.com/reader/sd/pii/S2468023022005089?token=90B9514DC71F33DFF661320A642C0B1AB50E53194CEAE64A8440A7A43A38BADE8D766F7F06AB3CC4DA697CB22193BAEE&originRegion=eu-west-1&originCreation=20230117125516

BibTex

@article{BUT181452,
  author="Tadas {Dambrauskas} and Domante {Davidoviciene} and Kestukis {Baltakys} and Anatolijus {Eisinas} and Andrius {Jaskunas} and Pavel {Šiler} and Valdas {Rudelis} and Evelina {Švedaitė}",
  title="Effect of intercalated metal ions on the specific surface area and porosity of dibasic calcium silicate hydrate",
  journal="SURFACES AND INTERFACES",
  year="2022",
  volume="33",
  number="OCT 2022",
  pages="11",
  doi="10.1016/j.surfin.2022.102243",
  issn="2468-0230",
  url="https://reader.elsevier.com/reader/sd/pii/S2468023022005089?token=90B9514DC71F33DFF661320A642C0B1AB50E53194CEAE64A8440A7A43A38BADE8D766F7F06AB3CC4DA697CB22193BAEE&originRegion=eu-west-1&originCreation=20230117125516"
}