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The adsorbing properties of mesoporous silica/carbon composites prepared by direct carbonization of the template as the sole source of the carbon phase
- Source :
- Advanced Composites Letters, Vol 28 (2019)
- Publication Year :
- 2019
- Publisher :
- SAGE Publishing, 2019.
-
Abstract
- The objective of this study was to prepare composite materials based on mesoporous silica/carbon, functionalized with acid groups, and also to analyze its application in the adsorption of dyes. These materials were prepared in a simplified unconventional route. The carbon phase was generated by direct carbonization of organic surface-active templates, which are used in the synthesis of meso-ordered silicas. The resulting composite materials were characterized in terms of their structure, texture, chemical composition, and surface chemical reactivity. Data obtained demonstrate uniform and ordered porous structures of approximately 70–200 Å, with a developed surface area of approximately 400–500 m2 g−1 and a large total pore volume of approximately 1.0–1.5 cm3 g−1. The potential of synthesized composite materials functionalized by oxygenated groups as adsorbents of cationic dyes was analyzed, the values of the maximum adsorption capacity between 317 mg g−1 and 245 mg g−1 were obtained. The adsorbing properties of silica/carbon composite materials obtained in an unconventional method using an organic template as the only carbon source were compared with the properties of silica/carbon composite materials manufactured by the conventional method using external precursors of the carbon phase. It has been proved that composite materials synthesized using an unconventional procedure, despite the fact that they have a lower carbon phase content, exhibit adsorption properties that are comparable or superior to materials elaborated in the traditional way, removing up to 85–90% of methylene blue from water contaminated with dye.
- Subjects :
- Materials science
Carbonization
chemistry.chemical_element
02 engineering and technology
Mesoporous silica
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Psychiatry and Mental health
Neuropsychology and Physiological Psychology
Adsorption
Chemical engineering
chemistry
Phase (matter)
lcsh:TA401-492
Carbon composites
lcsh:Materials of engineering and construction. Mechanics of materials
0210 nano-technology
Carbon
Subjects
Details
- Language :
- English
- ISSN :
- 09636935
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Advanced Composites Letters
- Accession number :
- edsair.doi.dedup.....5f381fcfa1519be4728e47d825cb6679