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Article: Highly crystalline lithium chloride-intercalated graphitic carbon nitride hollow nanotubes for effective lead removal

TitleHighly crystalline lithium chloride-intercalated graphitic carbon nitride hollow nanotubes for effective lead removal
Authors
KeywordsAdsorption capacities
Batch adsorption experiments
Environmental remediation
Geometric configurations
Graphitic carbon nitrides
Issue Date2019
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/journals-books-databases/about-journals/environmental-science-nano/
Citation
Environmental Science: Nano, 2019, v. 6 n. 11, p. 3324-3335 How to Cite?
AbstractThe functional groups and intercalated ions in the structure of graphitic carbon nitrides can be tailored to attain excellent physiochemical properties for environmental remediation. In this work, a highly crystallized lithium chloride-intercalated graphitic carbon nitride (LiCl-CN) material was fabricated through well controlled molten salt synthesis. The as-prepared materials presented hollow tube morphology with tetragonal geometric configurations. Batch adsorption experiments showed that the LiCl-intercalated graphitic carbon nitride (LiCl-CN-4 h) exhibited excellent lead cation (PbIJII)) adsorption capacity (172.41 mg g−1) at pH 5.5. Thermodynamic parameters revealed the endothermic and spontaneous nature of Pb(II) adsorption on LiCl-CN-4 h, and the kinetics results demonstrated that chemisorption dominated the adsorption process. X-ray diffraction analysis indicated that the intercalation of Cl and Li can lead to a larger interlayer spacing between carbon nitride layers. An X-ray photoelectron spectroscopy and X-ray absorption spectroscopy investigation further elucidated the chemical binding sites of Cl–Pb in the lattice of LiCl-CN, indicating the intercalation of Cl− ions contributed to the large improvement of Pb(II) adsorption capacity in g-C3N4 materials. The experimental results demonstrate that this is a facile and environmentally friendly strategy for synthesizing highly crystalline LiCl-CN with hollow tube morphology, and that the material showed promise for efficient PbIJII) removal in environmental remediation applications.
Persistent Identifierhttp://hdl.handle.net/10722/290874
ISSN
2020 Impact Factor: 8.131
2015 SCImago Journal Rankings: 1.675
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhou, Y-
dc.contributor.authorLiao, C-
dc.contributor.authorFAN, Y-
dc.contributor.authorMA, S-
dc.contributor.authorSu, M-
dc.contributor.authorZhou, Z-
dc.contributor.authorChan, T-
dc.contributor.authorLu, Y-
dc.contributor.authorShih, K-
dc.date.accessioned2020-11-02T05:48:20Z-
dc.date.available2020-11-02T05:48:20Z-
dc.date.issued2019-
dc.identifier.citationEnvironmental Science: Nano, 2019, v. 6 n. 11, p. 3324-3335-
dc.identifier.issn2051-8153-
dc.identifier.urihttp://hdl.handle.net/10722/290874-
dc.description.abstractThe functional groups and intercalated ions in the structure of graphitic carbon nitrides can be tailored to attain excellent physiochemical properties for environmental remediation. In this work, a highly crystallized lithium chloride-intercalated graphitic carbon nitride (LiCl-CN) material was fabricated through well controlled molten salt synthesis. The as-prepared materials presented hollow tube morphology with tetragonal geometric configurations. Batch adsorption experiments showed that the LiCl-intercalated graphitic carbon nitride (LiCl-CN-4 h) exhibited excellent lead cation (PbIJII)) adsorption capacity (172.41 mg g−1) at pH 5.5. Thermodynamic parameters revealed the endothermic and spontaneous nature of Pb(II) adsorption on LiCl-CN-4 h, and the kinetics results demonstrated that chemisorption dominated the adsorption process. X-ray diffraction analysis indicated that the intercalation of Cl and Li can lead to a larger interlayer spacing between carbon nitride layers. An X-ray photoelectron spectroscopy and X-ray absorption spectroscopy investigation further elucidated the chemical binding sites of Cl–Pb in the lattice of LiCl-CN, indicating the intercalation of Cl− ions contributed to the large improvement of Pb(II) adsorption capacity in g-C3N4 materials. The experimental results demonstrate that this is a facile and environmentally friendly strategy for synthesizing highly crystalline LiCl-CN with hollow tube morphology, and that the material showed promise for efficient PbIJII) removal in environmental remediation applications.-
dc.languageeng-
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/journals-books-databases/about-journals/environmental-science-nano/-
dc.relation.ispartofEnvironmental Science: Nano-
dc.subjectAdsorption capacities-
dc.subjectBatch adsorption experiments-
dc.subjectEnvironmental remediation-
dc.subjectGeometric configurations-
dc.subjectGraphitic carbon nitrides-
dc.titleHighly crystalline lithium chloride-intercalated graphitic carbon nitride hollow nanotubes for effective lead removal-
dc.typeArticle-
dc.identifier.emailZhou, Y: yzhou223@hku.hk-
dc.identifier.emailLiao, C: liaocz@hku.hk-
dc.identifier.emailShih, K: kshih@hku.hk-
dc.identifier.authorityShih, K=rp00167-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/C9EN00817A-
dc.identifier.scopuseid_2-s2.0-85074885879-
dc.identifier.hkuros318186-
dc.identifier.volume6-
dc.identifier.issue11-
dc.identifier.spage3324-
dc.identifier.epage3335-
dc.identifier.isiWOS:000496482700008-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl2051-8153-

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