Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removal
Chitosan/MOF composite porous monolith used in water remediation as adsorbent can realize high-efficient removal of pollutant in water and facile recycling from water. However, dissolution of chitosan (without crosslinking) in acidic aqueous solution will cause breakage of composite monolith. Herein...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2020-06-01
|
Series: | Arabian Journal of Chemistry |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535220301131 |
id |
doaj-9dfac82830494f53afcb6f492225fa59 |
---|---|
record_format |
Article |
spelling |
doaj-9dfac82830494f53afcb6f492225fa592020-11-25T02:53:45ZengElsevierArabian Journal of Chemistry1878-53522020-06-0113656695678Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removalLang Wen0Xuedan Chen1Chao Chen2Ruisong Yang3Min Gong4Yiguo Zhang5Qingshan Fu6College of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, ChinaCollege of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, ChinaCollege of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, ChinaCollege of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, ChinaCollege of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, ChinaYuxing carbon production company limited, Zigong 643000, ChinaCollege of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China; Key Laboratory of Material Corrosion and Protection of Sichuan Province, Zigong 643000, China; Corresponding author at: College of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China.Chitosan/MOF composite porous monolith used in water remediation as adsorbent can realize high-efficient removal of pollutant in water and facile recycling from water. However, dissolution of chitosan (without crosslinking) in acidic aqueous solution will cause breakage of composite monolith. Herein, we report a chitosan/UiO-66 monolith prepared by ice-templating method. Specially, a pre-crosslinking treatment (by glutaraldehyde) is employed before the monolith formation, which obviously boosts its stability in aqueous solution. The composite monolith is evaluated by SEM, N2 adsorption, XRD, and batch adsorption tests for Congo Red (CR). The results show that the composite monolith possesses a typical ice-templating structure with hierarchical (mirco- / meso- and macro-) pores. UiO-66 particles are embedded on the surface of chitosan matrix, and the crystal structure of UiO-66 is not changed obviously by the crosslinking and freezing process. The composite monolith exhibits high adsorption efficiency (90% of CR was removed from its aqueous solution in 60 min) and the maximum adsorption capacity of 246.21 mg/g (derived from Langmuir model) can be reached. After adsorption, the monolith is collected by a facile procedure and recovered using ethanol for evaluating its reusability. After 4 cycles, the CR removal efficiency of the composite monolith still remains ~90% of the initial efficiency. This work demonstrates that the simple crosslinking procedure before monolith formation can ensure the intact shape of the chitosan/MOF monolith during adsorption.http://www.sciencedirect.com/science/article/pii/S1878535220301131Water treatmentUiO-66AdsorptionCongo RedIce templatingCross-linking |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lang Wen Xuedan Chen Chao Chen Ruisong Yang Min Gong Yiguo Zhang Qingshan Fu |
spellingShingle |
Lang Wen Xuedan Chen Chao Chen Ruisong Yang Min Gong Yiguo Zhang Qingshan Fu Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removal Arabian Journal of Chemistry Water treatment UiO-66 Adsorption Congo Red Ice templating Cross-linking |
author_facet |
Lang Wen Xuedan Chen Chao Chen Ruisong Yang Min Gong Yiguo Zhang Qingshan Fu |
author_sort |
Lang Wen |
title |
Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removal |
title_short |
Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removal |
title_full |
Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removal |
title_fullStr |
Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removal |
title_full_unstemmed |
Ice-templated porous polymer/UiO-66 monolith for Congo Red adsorptive removal |
title_sort |
ice-templated porous polymer/uio-66 monolith for congo red adsorptive removal |
publisher |
Elsevier |
series |
Arabian Journal of Chemistry |
issn |
1878-5352 |
publishDate |
2020-06-01 |
description |
Chitosan/MOF composite porous monolith used in water remediation as adsorbent can realize high-efficient removal of pollutant in water and facile recycling from water. However, dissolution of chitosan (without crosslinking) in acidic aqueous solution will cause breakage of composite monolith. Herein, we report a chitosan/UiO-66 monolith prepared by ice-templating method. Specially, a pre-crosslinking treatment (by glutaraldehyde) is employed before the monolith formation, which obviously boosts its stability in aqueous solution. The composite monolith is evaluated by SEM, N2 adsorption, XRD, and batch adsorption tests for Congo Red (CR). The results show that the composite monolith possesses a typical ice-templating structure with hierarchical (mirco- / meso- and macro-) pores. UiO-66 particles are embedded on the surface of chitosan matrix, and the crystal structure of UiO-66 is not changed obviously by the crosslinking and freezing process. The composite monolith exhibits high adsorption efficiency (90% of CR was removed from its aqueous solution in 60 min) and the maximum adsorption capacity of 246.21 mg/g (derived from Langmuir model) can be reached. After adsorption, the monolith is collected by a facile procedure and recovered using ethanol for evaluating its reusability. After 4 cycles, the CR removal efficiency of the composite monolith still remains ~90% of the initial efficiency. This work demonstrates that the simple crosslinking procedure before monolith formation can ensure the intact shape of the chitosan/MOF monolith during adsorption. |
topic |
Water treatment UiO-66 Adsorption Congo Red Ice templating Cross-linking |
url |
http://www.sciencedirect.com/science/article/pii/S1878535220301131 |
work_keys_str_mv |
AT langwen icetemplatedporouspolymeruio66monolithforcongoredadsorptiveremoval AT xuedanchen icetemplatedporouspolymeruio66monolithforcongoredadsorptiveremoval AT chaochen icetemplatedporouspolymeruio66monolithforcongoredadsorptiveremoval AT ruisongyang icetemplatedporouspolymeruio66monolithforcongoredadsorptiveremoval AT mingong icetemplatedporouspolymeruio66monolithforcongoredadsorptiveremoval AT yiguozhang icetemplatedporouspolymeruio66monolithforcongoredadsorptiveremoval AT qingshanfu icetemplatedporouspolymeruio66monolithforcongoredadsorptiveremoval |
_version_ |
1724724618404560896 |