Superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.

The goal of this work is the incorporation of zirco-nium, in the process of self-assembly of the tem-plate agents (P123) and hydrolyzed TEOS, and a source of carbon in the original synthesis mixture. This direct incorporation of zirconia leads, after carbonization, to ordered mesoporous carbon mate-...

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Detalles Bibliográficos
Autor principal: Anunziata, Oscar A.
Formato: Documento de conferencia publisherVersion
Lenguaje:Inglés
Publicado: 2022
Materias:
sulphated zirconia
mesoporous cabon
superacid material
antimicrobial
anticancer
anti-fungal
nanobiomedical applications
Acceso en línea:http://hdl.handle.net/20.500.12272/6591
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-6591
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic sulphated zirconia
mesoporous cabon
superacid material
antimicrobial
anticancer
anti-fungal
nanobiomedical applications
spellingShingle sulphated zirconia
mesoporous cabon
superacid material
antimicrobial
anticancer
anti-fungal
nanobiomedical applications
Anunziata, Oscar A.
Superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.
topic_facet sulphated zirconia
mesoporous cabon
superacid material
antimicrobial
anticancer
anti-fungal
nanobiomedical applications
description The goal of this work is the incorporation of zirco-nium, in the process of self-assembly of the tem-plate agents (P123) and hydrolyzed TEOS, and a source of carbon in the original synthesis mixture. This direct incorporation of zirconia leads, after carbonization, to ordered mesoporous carbon mate-rial, with zirconium in its structure (SZr-MC), and without zirconium oxide as a bulky species. The sulfated mesoporous carbon has a high acidity that can make the SZr-MC nanoscopic material, with super acidic properties. We have designed a novel synthesis procedure for the formation of acidic mesoporous carbon-based nanomaterials function-alized with sulfated zirconia. During the crystalliza-tion process, P123, A-type starch, zirconia and sili-con were able to cohesionize. After sulphuric treat-ments, the physical characteristics of the parent car-bon were retained in the ultimate material, reveal-ing a great surface area (1300 m2/g), a large pore volume and a well-ordered porosity composed of uniform mesopores of approximately 3.5 nm. XRD, SEM, TEM and XPS studies indicated the absence of ZrO2 as a bulk species. Therefore, Zr as an iso-lated species was successfully anchored in the MC for subsequent sulfation. Furthermore, evidence from the XPS C 1s data can be attributed to the sp2 hybridized carbon (from the graphitic structure of the mesoporous carbon), which would form Zr-C bonds. In addition, the large amount of -OH groups, coming from the starch used as carbon source, would promote the formation of Zr-O-C species (also detected by XPS), forming part of the MC walls, in the self-assembly process.The evidence of two high temperature desorption peaks in the NH3-TPD profile and the high pyridine retention temper-ature determined by FTIR revealed medium, strong and super-strong acid sites in the SZrMC, and it can be assumed that these sites correspond to a su-peracid nanomaterial.
format Documento de conferencia
publisherVersion
author Anunziata, Oscar A.
author_facet Anunziata, Oscar A.
author_sort Anunziata, Oscar A.
title Superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.
title_short Superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.
title_full Superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.
title_fullStr Superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.
title_full_unstemmed Superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.
title_sort superacid sulfated-zirconia mesoporous carbon (szrmc) “efficient chemotherapeutic agent”.
publishDate 2022
url http://hdl.handle.net/20.500.12272/6591
work_keys_str_mv AT anunziataoscara superacidsulfatedzirconiamesoporouscarbonszrmcefficientchemotherapeuticagent
bdutipo_str Repositorios
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