Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders

V. Grehov; J. Kalnacs; A. Mishnev; K. Kundzins

doi:10.1515/lpts-2017-0025

Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders

V. Grehov
, J. Kalnacs
, A. Mishnev
, K. Kundzins

Thin Films Laboratory, Institute of Solid State Physics

Institute of Physical Energetics
Latvian Institute of Organic Synthesis

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Adsorption by graphene sponge (GS) manufactured by annealing nickel-carbon powder mixture in inert atmosphere has been studied. By determining the specific surface area (SSA) for the GS sample, it has been found that Brunauer, Emmett, Teller method (BET) of approximation of experimental isotherms gives wrong results in the pressure range of 0.025-0.12 because adsorption in this pressure region is affected by walls of ampoule. Real SSA value has been found by subtracting pore effect method (SPE) or by BET approximation in a low range of relative pressure of 0.0004-0.002.

Original language	English
Pages (from-to)	36-48
Number of pages	13
Journal	Latvian Journal of Physics and Technical Sciences
Volume	54
Issue number	4
DOIs	https://doi.org/10.1515/lpts-2017-0025
Publication status	Published - 1 Aug 2017

Keywords

BET approximation
graphene sponge
nitrogen adsorption
specific surface area

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title = "Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders",

abstract = "Adsorption by graphene sponge (GS) manufactured by annealing nickel-carbon powder mixture in inert atmosphere has been studied. By determining the specific surface area (SSA) for the GS sample, it has been found that Brunauer, Emmett, Teller method (BET) of approximation of experimental isotherms gives wrong results in the pressure range of 0.025-0.12 because adsorption in this pressure region is affected by walls of ampoule. Real SSA value has been found by subtracting pore effect method (SPE) or by BET approximation in a low range of relative pressure of 0.0004-0.002.",

keywords = "BET approximation, graphene sponge, nitrogen adsorption, specific surface area",

author = "V. Grehov and J. Kalnacs and A. Mishnev and K. Kundzins",

note = "Publisher Copyright: {\textcopyright} 2017 V. Grehov et al., published by De Gruyter Open 2017.",

year = "2017",

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doi = "10.1515/lpts-2017-0025",

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T1 - Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders

AU - Grehov, V.

AU - Kalnacs, J.

AU - Mishnev, A.

AU - Kundzins, K.

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Adsorption by graphene sponge (GS) manufactured by annealing nickel-carbon powder mixture in inert atmosphere has been studied. By determining the specific surface area (SSA) for the GS sample, it has been found that Brunauer, Emmett, Teller method (BET) of approximation of experimental isotherms gives wrong results in the pressure range of 0.025-0.12 because adsorption in this pressure region is affected by walls of ampoule. Real SSA value has been found by subtracting pore effect method (SPE) or by BET approximation in a low range of relative pressure of 0.0004-0.002.

AB - Adsorption by graphene sponge (GS) manufactured by annealing nickel-carbon powder mixture in inert atmosphere has been studied. By determining the specific surface area (SSA) for the GS sample, it has been found that Brunauer, Emmett, Teller method (BET) of approximation of experimental isotherms gives wrong results in the pressure range of 0.025-0.12 because adsorption in this pressure region is affected by walls of ampoule. Real SSA value has been found by subtracting pore effect method (SPE) or by BET approximation in a low range of relative pressure of 0.0004-0.002.

KW - BET approximation

KW - graphene sponge

KW - nitrogen adsorption

KW - specific surface area

UR - https://www.scopus.com/pages/publications/85030538976

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DO - 10.1515/lpts-2017-0025

M3 - Article

AN - SCOPUS:85030538976

SN - 0868-8257

VL - 54

SP - 36

EP - 48

JO - Latvian Journal of Physics and Technical Sciences

JF - Latvian Journal of Physics and Technical Sciences

IS - 4

ER -

Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders

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Keywords

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