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Dendritic Fibrous Nanosilica Coated with a Graphitic Carbon Nitride Shell as a Selective Catalyst for N‑Dealkylation.

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Τίτλος: Dendritic Fibrous Nanosilica Coated with a Graphitic Carbon Nitride Shell as a Selective Catalyst for N‑Dealkylation.
Συγγραφείς: Lebedev MD; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia., Goncharenko AA; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia., Filippov DV; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia., Yunin PA; Institute for Physics of Microstructures, Russian Academy of Sciences (IPM RAS), Nizhny Novgorod RF-603950, Russia., Siaglova ED; Sirius University of Science and Technology, Sochi RF 354340, Russia., Kalyagin AA; G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo RF 153045, Russia., Pudikov DA; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia., Skvortsov IA; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia.; Sirius University of Science and Technology, Sochi RF 354340, Russia.
Πηγή: Precision chemistry [Precis Chem] 2026 Feb 27; Vol. 4 (8), pp. 1141-1154. Date of Electronic Publication: 2026 Feb 27 (Print Publication: 2026).
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: American Chemical Society Country of Publication: United States NLM ID: 9918574281706676 Publication Model: eCollection Cited Medium: Internet ISSN: 2771-9316 (Electronic) Linking ISSN: 27719316 NLM ISO Abbreviation: Precis Chem Subsets: PubMed not MEDLINE
Imprint Name(s): Original Publication: Washington, District of Columbia : Anhui, China : American Chemical Society ; University of Science and Technology of China, [2023]-
Περίληψη: KCC-1@g-C3N4 composites, synthesized via thermal condensation of the melamine-cyanuric acid (MCA) complex on mesoporous KCC-1 silica nanoparticles, were developed with g-C3N4 content ranging from 7 to 45 wt %. Characterization by SEM, STEM, FTIR, XPS, and UV-vis DRS revealed a core-shell structure with band gaps of 2.82 and 2.86 eV and specific surface areas of 167.5-526.8 m2/g. These composites were evaluated as photocatalysts for the transformation of rhodamine B under visible light. At low g-C3N4 content (7-33 wt %), the composites selectively promote N-dealkylation, converting rhodamine B to rhodamine-110, as confirmed by UV-vis spectroscopy and mass spectrometry MALDI-TOF. Higher g-C3N4 content (38-45 wt %) leads to chromophore destruction, resembling pure g-C3N4 behavior. The enhanced N-dealkylation selectivity at lower g-C3N4 ratios is attributed to efficient charge separation facilitated by KCC-1 impurity electronic levels and the defects in the g-C3N4 shell. These findings highlight the potential of KCC-1@g-C3N4 composites for selective photocatalytic transformations, offering applications in environmental remediation and organic synthesis.
(© 2026 The Authors. Co-published by University of Science and Technology of China and American Chemical Society.)
References: Phys Chem Chem Phys. 2012 May 21;14(19):6889-97. (PMID: 22498770)
Chemosphere. 2024 Mar;352:141354. (PMID: 38311034)
Small. 2024 Jan;20(2):e2304404. (PMID: 37670529)
ACS Omega. 2024 Jan 22;9(4):4581-4593. (PMID: 38313520)
Int J Mol Sci. 2025 Feb 19;26(4):. (PMID: 40004219)
Chemosphere. 2024 Aug;362:142787. (PMID: 38972261)
Proc Natl Acad Sci U S A. 2020 Mar 24;117(12):6383-6390. (PMID: 32156731)
Sci Rep. 2015 Aug 28;5:13475. (PMID: 26315657)
Environ Sci Pollut Res Int. 2023 Sep;30(44):98732-98746. (PMID: 36622589)
Langmuir. 2012 Aug 21;28(33):12341-7. (PMID: 22861383)
Polymers (Basel). 2024 Jul 06;16(13):. (PMID: 39000791)
ACS Omega. 2024 Mar 26;9(14):16187-16195. (PMID: 38617626)
Acc Chem Res. 2022 May 17;55(10):1395-1410. (PMID: 35499964)
Phys Chem Chem Phys. 2016 Nov 23;18(46):31410-31418. (PMID: 27748477)
Photochem Photobiol. 2025 Jul-Aug;101(4):1000-1012. (PMID: 39572390)
Entry Date(s): Date Created: 20260827 Date Completed: 20260827 Latest Revision: 20260828
Update Code: 20260828
PubMed Central ID: PMC13508478
DOI: 10.1021/prechem.5c00195
PMID: 42657014
Βάση Δεδομένων: MEDLINE
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  Data: Dendritic Fibrous Nanosilica Coated with a Graphitic Carbon Nitride Shell as a Selective Catalyst for N‑Dealkylation.
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  Data: <searchLink fieldCode="AU" term="%22Lebedev+MD%22">Lebedev MD</searchLink>; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia.<br /><searchLink fieldCode="AU" term="%22Goncharenko+AA%22">Goncharenko AA</searchLink>; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia.<br /><searchLink fieldCode="AU" term="%22Filippov+DV%22">Filippov DV</searchLink>; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia.<br /><searchLink fieldCode="AU" term="%22Yunin+PA%22">Yunin PA</searchLink>; Institute for Physics of Microstructures, Russian Academy of Sciences (IPM RAS), Nizhny Novgorod RF-603950, Russia.<br /><searchLink fieldCode="AU" term="%22Siaglova+ED%22">Siaglova ED</searchLink>; Sirius University of Science and Technology, Sochi RF 354340, Russia.<br /><searchLink fieldCode="AU" term="%22Kalyagin+AA%22">Kalyagin AA</searchLink>; G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo RF 153045, Russia.<br /><searchLink fieldCode="AU" term="%22Pudikov+DA%22">Pudikov DA</searchLink>; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia.<br /><searchLink fieldCode="AU" term="%22Skvortsov+IA%22">Skvortsov IA</searchLink>; Department of Organic Chemistry, Ivanovo State University of Chemistry and Technology (ISUCT), Ivanovo RF-153000, Russia.; Sirius University of Science and Technology, Sochi RF 354340, Russia.
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  Data: <searchLink fieldCode="JN" term="%229918574281706676%22">Precision chemistry</searchLink> [Precis Chem] 2026 Feb 27; Vol. 4 (8), pp. 1141-1154. <i>Date of Electronic Publication: </i>2026 Feb 27 (<i>Print Publication: </i>2026).
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  Data: KCC-1@g-C<subscript>3</subscript>N<subscript>4</subscript> composites, synthesized via thermal condensation of the melamine-cyanuric acid (MCA) complex on mesoporous KCC-1 silica nanoparticles, were developed with g-C<subscript>3</subscript>N<subscript>4</subscript> content ranging from 7 to 45 wt %. Characterization by SEM, STEM, FTIR, XPS, and UV-vis DRS revealed a core-shell structure with band gaps of 2.82 and 2.86 eV and specific surface areas of 167.5-526.8 m<superscript>2</superscript>/g. These composites were evaluated as photocatalysts for the transformation of rhodamine B under visible light. At low g-C<subscript>3</subscript>N<subscript>4</subscript> content (7-33 wt %), the composites selectively promote N-dealkylation, converting rhodamine B to rhodamine-110, as confirmed by UV-vis spectroscopy and mass spectrometry MALDI-TOF. Higher g-C<subscript>3</subscript>N<subscript>4</subscript> content (38-45 wt %) leads to chromophore destruction, resembling pure g-C<subscript>3</subscript>N<subscript>4</subscript> behavior. The enhanced N-dealkylation selectivity at lower g-C<subscript>3</subscript>N<subscript>4</subscript> ratios is attributed to efficient charge separation facilitated by KCC-1 impurity electronic levels and the defects in the g-C<subscript>3</subscript>N<subscript>4</subscript> shell. These findings highlight the potential of KCC-1@g-C<subscript>3</subscript>N<subscript>4</subscript> composites for selective photocatalytic transformations, offering applications in environmental remediation and organic synthesis.<br /> (© 2026 The Authors. Co-published by University of Science and Technology of China and American Chemical Society.)
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  Data: Phys Chem Chem Phys. 2012 May 21;14(19):6889-97. (PMID: <searchLink fieldCode="PM" term="%2222498770%22">22498770)</searchLink><br />Chemosphere. 2024 Mar;352:141354. (PMID: <searchLink fieldCode="PM" term="%2238311034%22">38311034)</searchLink><br />Small. 2024 Jan;20(2):e2304404. (PMID: <searchLink fieldCode="PM" term="%2237670529%22">37670529)</searchLink><br />ACS Omega. 2024 Jan 22;9(4):4581-4593. (PMID: <searchLink fieldCode="PM" term="%2238313520%22">38313520)</searchLink><br />Int J Mol Sci. 2025 Feb 19;26(4):. (PMID: <searchLink fieldCode="PM" term="%2240004219%22">40004219)</searchLink><br />Chemosphere. 2024 Aug;362:142787. (PMID: <searchLink fieldCode="PM" term="%2238972261%22">38972261)</searchLink><br />Proc Natl Acad Sci U S A. 2020 Mar 24;117(12):6383-6390. (PMID: <searchLink fieldCode="PM" term="%2232156731%22">32156731)</searchLink><br />Sci Rep. 2015 Aug 28;5:13475. (PMID: <searchLink fieldCode="PM" term="%2226315657%22">26315657)</searchLink><br />Environ Sci Pollut Res Int. 2023 Sep;30(44):98732-98746. (PMID: <searchLink fieldCode="PM" term="%2236622589%22">36622589)</searchLink><br />Langmuir. 2012 Aug 21;28(33):12341-7. (PMID: <searchLink fieldCode="PM" term="%2222861383%22">22861383)</searchLink><br />Polymers (Basel). 2024 Jul 06;16(13):. (PMID: <searchLink fieldCode="PM" term="%2239000791%22">39000791)</searchLink><br />ACS Omega. 2024 Mar 26;9(14):16187-16195. (PMID: <searchLink fieldCode="PM" term="%2238617626%22">38617626)</searchLink><br />Acc Chem Res. 2022 May 17;55(10):1395-1410. (PMID: <searchLink fieldCode="PM" term="%2235499964%22">35499964)</searchLink><br />Phys Chem Chem Phys. 2016 Nov 23;18(46):31410-31418. (PMID: <searchLink fieldCode="PM" term="%2227748477%22">27748477)</searchLink><br />Photochem Photobiol. 2025 Jul-Aug;101(4):1000-1012. (PMID: <searchLink fieldCode="PM" term="%2239572390%22">39572390)</searchLink>
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