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Title: Grafting of (3-chloropropyl)-trimethoxy silane on halloysite nanotubes surface
Authors: Abu, El-Soad, A. M.
Lazzara, G.
Pestov, A. V.
Tambasova, D. P.
Antonov, D. O.
Cavallaro, G.
Kovaleva, E. G.
Issue Date: 2021
Publisher: MDPI AG
Citation: Grafting of (3-chloropropyl)-trimethoxy silane on halloysite nanotubes surface / A. M. Abu El-Soad, G. Lazzara, A. V. Pestov, et al. — DOI 10.3390/app11125534 // Applied Sciences (Switzerland). — 2021. — Vol. 11. — Iss. 12. — 5534.
Abstract: Modified halloysite nanotubes (HNTs-Cl) were synthesized by a coupling reaction with (3-chloropropyl) trimethoxysilane (CPTMS). The incorporation of chloro-silane onto HNTs surface creates HNTs-Cl, which has great chemical activity and is considered a good candidate as an active site that reacts with other active molecules in order to create new materials with great applications in chemical engineering and nanotechnology. The value of this work lies in the fact that improving the degree of grafting of chloro-silane onto the HNT’s surface has been accomplished by incorporation of HNTs with CPTMS under different experimental conditions. Many parameters, such as the dispersing media, the molar ratio of HNTs/CPTMS/H2O, refluxing time, and the type of catalyst were studied. The greatest degree of grafting was accomplished by using toluene as a medium for the grafting process, with a molar ratio of HNTs/CPTMS/H2O of 1:1:3, and a refluxing time of 4 h. The addition of 7.169 mmol of triethylamine (Et3N) and 25.97 mmol of ammonium hydroxide (NH4OH) led to an increase in the degree of grafting of CPTMS onto the HNT’s surface. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords: CPTMS
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85108827302
PURE ID: 22196819
ISSN: 20763417
DOI: 10.3390/app11125534
metadata.dc.description.sponsorship: This research was funded by Program 211 of the Government of the Russian Federation No. 02.A03.21.0006, RFBR grants 17-03-00641 and 18-29-12129 mk, the State Task from the Ministry of the Education and Science of the Russian Federation No. 4.9514.2017/8.9.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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