Synthesis of Quaternary Hydrotalcite-Carbon Nanotube Composite and Its Sulfate Adsorption Performance in Cement Paste

Ke, G; Duanxiong, K; Zhang, X; Tang, Z; Yang, R; Li, W

Synthesis of Quaternary Hydrotalcite-Carbon Nanotube Composite and Its Sulfate Adsorption Performance in Cement Paste

Ke, G Duanxiong, K Zhang, X Tang, Z Yang, R Li, W

Permalink

Publisher:: ASCE-AMER SOC CIVIL ENGINEERS
Publication Type:: Journal Article
Citation:: Journal of Materials in Civil Engineering, 2023, 35, (11)
Issue Date:: 2023-11-01

Closed Access

	Filename	Description	Size
	li-et-al-2023-synthesis-of-quaternary-hydrotalcite-carbon-nanotube-composite-and-its-sulfate-adsorption-performance-in.pdf	Published version	6.51 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Ke, G
dc.contributor.author	Duanxiong, K
dc.contributor.author	Zhang, X
dc.contributor.author	Tang, Z
dc.contributor.author	Yang, R
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215
dc.date.accessioned	2024-05-10T07:37:23Z
dc.date.available	2024-05-10T07:37:23Z
dc.date.issued	2023-11-01
dc.identifier.citation	Journal of Materials in Civil Engineering, 2023, 35, (11)
dc.identifier.issn	0899-1561
dc.identifier.issn	1943-5533
dc.identifier.uri	http://hdl.handle.net/10453/178799
dc.description.abstract	In this paper, quaternary hydrotalcite [layered double hydroxide (LDH)] (CoFeMgAl-LDH) was first fabricated based on the coprecipitation method, and then, CoFeMgAl-LDH/carbon nanotubes (CNTs) composite was synthesized by CNTs and CoFeMgAl-LDH through the solid phase mixing method. Subsequently, the physical-chemical properties of CoFeMgAl-LDH/CNT composite were investigated by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, energy dispersive spectroscopy (EDS), and Brunauer-Emmett-Teller (BET) analysis. Meanwhile, the performance of CoFeMgAl-LDH/CNT composite for SO42- adsorption was evaluated under different conditions, including different initial concentration, contact time, adsorbent dosage, solution pH, temperature, and coexisting ions. Afterward, the SO42- adsorption capacity of CoFeMgAl-LDH/CNT in cement paste was further studied. The results showed that the CoFeMgAl-LDH/CNT composite exhibited a three-dimensional structure with high specific surface area. The maximum SO42- adsorption amount of the CoFeMgAl-LDH/CNT composite was 116.27 mg/g, which was significantly higher compared with other absorbents of the same type. Pseudosecond-order kinetic model could reasonably describe the adsorption kinetics, and Freundlich isotherm could fit the adsorption data accurately. The results also suggest that the synthesized CoFeMgAl-LDH/CNT composite can serve as a potential material for the sulfate binding in cementitious materials.
dc.language	English
dc.publisher	ASCE-AMER SOC CIVIL ENGINEERS
dc.relation.ispartof	Journal of Materials in Civil Engineering
dc.relation.isbasedon	10.1061/JMCEE7.MTENG-15248
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0912 Materials Engineering
dc.subject.classification	Building & Construction
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.title	Synthesis of Quaternary Hydrotalcite-Carbon Nanotube Composite and Its Sulfate Adsorption Performance in Cement Paste
dc.type	Journal Article
utslib.citation.volume	35
utslib.for	0905 Civil Engineering
utslib.for	0912 Materials Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
pubs.organisational-group	University of Technology Sydney/Strength - CGT - Centre for Green Technology
utslib.copyright.status	closed_access	*
dc.date.updated	2024-05-10T07:37:07Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	35
utslib.citation.issue	11

Abstract:

In this paper, quaternary hydrotalcite [layered double hydroxide (LDH)] (CoFeMgAl-LDH) was first fabricated based on the coprecipitation method, and then, CoFeMgAl-LDH/carbon nanotubes (CNTs) composite was synthesized by CNTs and CoFeMgAl-LDH through the solid phase mixing method. Subsequently, the physical-chemical properties of CoFeMgAl-LDH/CNT composite were investigated by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, energy dispersive spectroscopy (EDS), and Brunauer-Emmett-Teller (BET) analysis. Meanwhile, the performance of CoFeMgAl-LDH/CNT composite for SO42- adsorption was evaluated under different conditions, including different initial concentration, contact time, adsorbent dosage, solution pH, temperature, and coexisting ions. Afterward, the SO42- adsorption capacity of CoFeMgAl-LDH/CNT in cement paste was further studied. The results showed that the CoFeMgAl-LDH/CNT composite exhibited a three-dimensional structure with high specific surface area. The maximum SO42- adsorption amount of the CoFeMgAl-LDH/CNT composite was 116.27 mg/g, which was significantly higher compared with other absorbents of the same type. Pseudosecond-order kinetic model could reasonably describe the adsorption kinetics, and Freundlich isotherm could fit the adsorption data accurately. The results also suggest that the synthesized CoFeMgAl-LDH/CNT composite can serve as a potential material for the sulfate binding in cementitious materials.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/178799