Enhanced adsorptive removal of p-nitrophenol from water by aluminum metal–organic framework/reduced graphene oxide composite

Persistent Link:
http://hdl.handle.net/10150/614746
Title:
Enhanced adsorptive removal of p-nitrophenol from water by aluminum metal–organic framework/reduced graphene oxide composite
Author:
Wu, Zhibin; Yuan, Xingzhong; Zhong, Hua; Wang, Hou; Zeng, Guangming; Chen, Xiaohong; Wang, Hui; zhang, Lei; Shao, Jianguang
Affiliation:
Univ Arizona, Dept Soil Water & Environm Sci
Issue Date:
2016-05-16
Publisher:
NATURE PUBLISHING GROUP
Citation:
Enhanced adsorptive removal of p-nitrophenol from water by aluminum metal–organic framework/reduced graphene oxide composite 2016, 6:25638 Scientific Reports
Journal:
Scientific Reports
Rights:
This work is licensed under a Creative Commons Attribution 4.0 International License.
Collection Information:
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract:
In this study, the composite of aluminum metal-organic framework MIL-68(Al) and reduced graphene oxide (MA/RG) was synthesized via a one-step solvothermal method, and their performances for pnitrophenol (PNP) adsorption from aqueous solution were systematically investigated. The introduction of reduced graphene oxide (RG) into MIL-68(Al) (MA) significantly changes the morphologies of the MA and increases the surface area. The MA/RG-15% prepared at RG-to-MA mass ratio of 15% shows a PNP uptake rate 64% and 123% higher than MIL-68(Al) and reduced graphene oxide (RG), respectively. The hydrogen bond and pi-pi dispersion were considered to be the major driving force for the spontaneous and endothermic adsorption process for PNP removal. The adsorption kinetics, which was controlled by film-diffusion and intra-particle diffusion, was greatly influenced by solution pH, ionic strength, temperature and initial PNP concentration. The adsorption kinetics and isotherms can be well delineated using pseudo-second-order and Langmuir equations, respectively. The presence of phenol or isomeric nitrophenols in the solution had minimal influence on PNP adsorption by reusable MA/RG composite.
ISSN:
2045-2322
DOI:
10.1038/srep25638
Keywords:
AQUEOUS-SOLUTION; WASTE-WATER; FACILE SYNTHESIS; METHYLENE-BLUE; GRAPHITE OXIDE; REDUCTION; CARBON; PERFORMANCE; ADSORBENT; CAPACITY
Version:
Final published version
Sponsors:
The authors gratefully acknowledge the financial support provided by Collaborative Innovation Center of Resource-Conserving & Environment-friendly Society and Ecological Civilization, the National Natural Science Foundation of China (Nos 21276069, 51378192, 71431006).
Additional Links:
http://www.nature.com/articles/srep25638

Full metadata record

DC FieldValue Language
dc.contributor.authorWu, Zhibinen
dc.contributor.authorYuan, Xingzhongen
dc.contributor.authorZhong, Huaen
dc.contributor.authorWang, Houen
dc.contributor.authorZeng, Guangmingen
dc.contributor.authorChen, Xiaohongen
dc.contributor.authorWang, Huien
dc.contributor.authorzhang, Leien
dc.contributor.authorShao, Jianguangen
dc.date.accessioned2016-06-24T23:30:19Z-
dc.date.available2016-06-24T23:30:19Z-
dc.date.issued2016-05-16-
dc.identifier.citationEnhanced adsorptive removal of p-nitrophenol from water by aluminum metal–organic framework/reduced graphene oxide composite 2016, 6:25638 Scientific Reportsen
dc.identifier.issn2045-2322-
dc.identifier.doi10.1038/srep25638-
dc.identifier.urihttp://hdl.handle.net/10150/614746-
dc.description.abstractIn this study, the composite of aluminum metal-organic framework MIL-68(Al) and reduced graphene oxide (MA/RG) was synthesized via a one-step solvothermal method, and their performances for pnitrophenol (PNP) adsorption from aqueous solution were systematically investigated. The introduction of reduced graphene oxide (RG) into MIL-68(Al) (MA) significantly changes the morphologies of the MA and increases the surface area. The MA/RG-15% prepared at RG-to-MA mass ratio of 15% shows a PNP uptake rate 64% and 123% higher than MIL-68(Al) and reduced graphene oxide (RG), respectively. The hydrogen bond and pi-pi dispersion were considered to be the major driving force for the spontaneous and endothermic adsorption process for PNP removal. The adsorption kinetics, which was controlled by film-diffusion and intra-particle diffusion, was greatly influenced by solution pH, ionic strength, temperature and initial PNP concentration. The adsorption kinetics and isotherms can be well delineated using pseudo-second-order and Langmuir equations, respectively. The presence of phenol or isomeric nitrophenols in the solution had minimal influence on PNP adsorption by reusable MA/RG composite.en
dc.description.sponsorshipThe authors gratefully acknowledge the financial support provided by Collaborative Innovation Center of Resource-Conserving & Environment-friendly Society and Ecological Civilization, the National Natural Science Foundation of China (Nos 21276069, 51378192, 71431006).en
dc.language.isoenen
dc.publisherNATURE PUBLISHING GROUPen
dc.relation.urlhttp://www.nature.com/articles/srep25638en
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License.en
dc.subjectAQUEOUS-SOLUTIONen
dc.subjectWASTE-WATERen
dc.subjectFACILE SYNTHESISen
dc.subjectMETHYLENE-BLUEen
dc.subjectGRAPHITE OXIDEen
dc.subjectREDUCTION; CARBONen
dc.subjectPERFORMANCEen
dc.subjectADSORBENTen
dc.subjectCAPACITYen
dc.titleEnhanced adsorptive removal of p-nitrophenol from water by aluminum metal–organic framework/reduced graphene oxide compositeen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Dept Soil Water & Environm Scien
dc.identifier.journalScientific Reportsen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
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