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Article: Highly crystalline lithium chloride-intercalated graphitic carbon nitride hollow nanotubes for effective lead removal
Title | Highly crystalline lithium chloride-intercalated graphitic carbon nitride hollow nanotubes for effective lead removal |
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Authors | |
Keywords | Adsorption capacities Batch adsorption experiments Environmental remediation Geometric configurations Graphitic carbon nitrides |
Issue Date | 2019 |
Publisher | Royal 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? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/290874 |
ISSN | 2023 Impact Factor: 5.8 2023 SCImago Journal Rankings: 1.463 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhou, Y | - |
dc.contributor.author | Liao, C | - |
dc.contributor.author | FAN, Y | - |
dc.contributor.author | MA, S | - |
dc.contributor.author | Su, M | - |
dc.contributor.author | Zhou, Z | - |
dc.contributor.author | Chan, T | - |
dc.contributor.author | Lu, Y | - |
dc.contributor.author | Shih, K | - |
dc.date.accessioned | 2020-11-02T05:48:20Z | - |
dc.date.available | 2020-11-02T05:48:20Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Environmental Science: Nano, 2019, v. 6 n. 11, p. 3324-3335 | - |
dc.identifier.issn | 2051-8153 | - |
dc.identifier.uri | http://hdl.handle.net/10722/290874 | - |
dc.description.abstract | The 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.language | eng | - |
dc.publisher | Royal 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.ispartof | Environmental Science: Nano | - |
dc.subject | Adsorption capacities | - |
dc.subject | Batch adsorption experiments | - |
dc.subject | Environmental remediation | - |
dc.subject | Geometric configurations | - |
dc.subject | Graphitic carbon nitrides | - |
dc.title | Highly crystalline lithium chloride-intercalated graphitic carbon nitride hollow nanotubes for effective lead removal | - |
dc.type | Article | - |
dc.identifier.email | Zhou, Y: yzhou223@hku.hk | - |
dc.identifier.email | Liao, C: liaocz@hku.hk | - |
dc.identifier.email | Shih, K: kshih@hku.hk | - |
dc.identifier.authority | Shih, K=rp00167 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1039/C9EN00817A | - |
dc.identifier.scopus | eid_2-s2.0-85074885879 | - |
dc.identifier.hkuros | 318186 | - |
dc.identifier.volume | 6 | - |
dc.identifier.issue | 11 | - |
dc.identifier.spage | 3324 | - |
dc.identifier.epage | 3335 | - |
dc.identifier.isi | WOS:000496482700008 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 2051-8153 | - |