New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels
The fine tuning of porosity in sol gel based devices makes possible the design of novel applications in which the transport of molecules through the oxide gel plays a crucial role. In this work we develop a new method for the simultaneous analysis of diffusion and adsorption of small diffusing probe...
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v425_n_p91_Perullini http://hdl.handle.net/20.500.12110/paper_00219797_v425_n_p91_Perullini |
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paper:paper_00219797_v425_n_p91_Perullini2025-07-30T17:27:13Z New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels Perullini, Ana Mercedes Japas, María Laura Adsorption Diffusion Silica hydrogel Sol-gel Adsorption Diffusion Field emission microscopes Silica Sol-gel process Sol-gels Adsorption properties Anionic and cationic dyes Characterization methods Field emission scanning electron microscopy High throughput screening Simultaneous analysis Simultaneous determinations Textural characterization Hydrogels anion cation dye nitrogen silicon dioxide adsorption article diffusion field emission scanning electron microscopy high throughput screening hydrogel isotherm mathematical model molecular probe physical chemistry porosity priority journal The fine tuning of porosity in sol gel based devices makes possible the design of novel applications in which the transport of molecules through the oxide gel plays a crucial role. In this work we develop a new method for the simultaneous analysis of diffusion and adsorption of small diffusing probes, as anionic and cationic dyes, through silica mesoporous hydrogels synthesized by sol-gel. The novelty of the work resides in the simplicity of acquisition of the experimental data (by means of a desk scanner) and further mathematical modeling, which is in line with high throughput screening procedures, enabling rapid and simultaneous determination of relevant diffusion and adsorption parameters. Net mass transport and adsorption properties of the silica based hydrogels were contrasted to dye adsorption isotherms and textural characterization of the wet gels by SAXS, as well as that of the corresponding aerogels determined by Field Emission Scanning Electron Microscopy (FESEM) and N 2 adsorption. Thus, the validation of the results with well-established characterization methods demonstrates that our approach is robust enough to give reliable physicochemical information on these systems. © 2014 Elsevier Inc. Fil:Perullini, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Japas, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v425_n_p91_Perullini http://hdl.handle.net/20.500.12110/paper_00219797_v425_n_p91_Perullini |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Adsorption Diffusion Silica hydrogel Sol-gel Adsorption Diffusion Field emission microscopes Silica Sol-gel process Sol-gels Adsorption properties Anionic and cationic dyes Characterization methods Field emission scanning electron microscopy High throughput screening Simultaneous analysis Simultaneous determinations Textural characterization Hydrogels anion cation dye nitrogen silicon dioxide adsorption article diffusion field emission scanning electron microscopy high throughput screening hydrogel isotherm mathematical model molecular probe physical chemistry porosity priority journal |
| spellingShingle |
Adsorption Diffusion Silica hydrogel Sol-gel Adsorption Diffusion Field emission microscopes Silica Sol-gel process Sol-gels Adsorption properties Anionic and cationic dyes Characterization methods Field emission scanning electron microscopy High throughput screening Simultaneous analysis Simultaneous determinations Textural characterization Hydrogels anion cation dye nitrogen silicon dioxide adsorption article diffusion field emission scanning electron microscopy high throughput screening hydrogel isotherm mathematical model molecular probe physical chemistry porosity priority journal Perullini, Ana Mercedes Japas, María Laura New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels |
| topic_facet |
Adsorption Diffusion Silica hydrogel Sol-gel Adsorption Diffusion Field emission microscopes Silica Sol-gel process Sol-gels Adsorption properties Anionic and cationic dyes Characterization methods Field emission scanning electron microscopy High throughput screening Simultaneous analysis Simultaneous determinations Textural characterization Hydrogels anion cation dye nitrogen silicon dioxide adsorption article diffusion field emission scanning electron microscopy high throughput screening hydrogel isotherm mathematical model molecular probe physical chemistry porosity priority journal |
| description |
The fine tuning of porosity in sol gel based devices makes possible the design of novel applications in which the transport of molecules through the oxide gel plays a crucial role. In this work we develop a new method for the simultaneous analysis of diffusion and adsorption of small diffusing probes, as anionic and cationic dyes, through silica mesoporous hydrogels synthesized by sol-gel. The novelty of the work resides in the simplicity of acquisition of the experimental data (by means of a desk scanner) and further mathematical modeling, which is in line with high throughput screening procedures, enabling rapid and simultaneous determination of relevant diffusion and adsorption parameters. Net mass transport and adsorption properties of the silica based hydrogels were contrasted to dye adsorption isotherms and textural characterization of the wet gels by SAXS, as well as that of the corresponding aerogels determined by Field Emission Scanning Electron Microscopy (FESEM) and N 2 adsorption. Thus, the validation of the results with well-established characterization methods demonstrates that our approach is robust enough to give reliable physicochemical information on these systems. © 2014 Elsevier Inc. |
| author |
Perullini, Ana Mercedes Japas, María Laura |
| author_facet |
Perullini, Ana Mercedes Japas, María Laura |
| author_sort |
Perullini, Ana Mercedes |
| title |
New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels |
| title_short |
New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels |
| title_full |
New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels |
| title_fullStr |
New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels |
| title_full_unstemmed |
New method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels |
| title_sort |
new method for the simultaneous determination of diffusion and adsorption of dyes in silica hydrogels |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v425_n_p91_Perullini http://hdl.handle.net/20.500.12110/paper_00219797_v425_n_p91_Perullini |
| work_keys_str_mv |
AT perullinianamercedes newmethodforthesimultaneousdeterminationofdiffusionandadsorptionofdyesinsilicahydrogels AT japasmarialaura newmethodforthesimultaneousdeterminationofdiffusionandadsorptionofdyesinsilicahydrogels |
| _version_ |
1840326965776613376 |