Bisphenol A adsorption in aqueous medium by investigating organic and inorganic components of hybrid polymer (polyvinylpyridine/SiO2/APTMS)

Autor(es)

Prete, Maiyara Carolyne ^[1] ; Teixeira Tarley, Cesar Ricardo ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Londrina, Dept Quim, Ctr Ciencias Exatas, Rodovia Celso Garcia Cid, PR 445 Km 380, BR-86050482 Londrina, PR - Brazil

^[2] Univ Estadual Campinas, UNICAMP, Inst Nacl Ciencia & Tecnol INCT Bioanalit, Inst Quim, Dept Quim Analit, Cidade Univ Zeferino Vaz S-N, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CHEMICAL ENGINEERING JOURNAL; v. 367, p. 102-114, JUL 1 2019.
• Citações Web of Science: 2

Resumo

The synthesis, characterization, and evaluation of new hybrid polymers towards bisphenol A (BPA) adsorption in aqueous medium were described. Different parameters related to the synthesis, such as catalyst nature, solvent type and the influence of 4-vynilpyridine (4-VP), 3-aminopropyltrimethoxysilane (APTMS) and tetraorthosilicate (TEOS) were investigated. The synthesized materials were named as polyvinylpyridine/SiO2/APTMS, polyvinylpyridine/SiO2, and polyvinylpyridine and characterized by FT-IR, SEM, TGA, elemental analysis and nitrogen adsorption/desorption measurements, as well as by kinetics and isotherms assays. From textural data results and binding adsorption assays, it was observed that the presence of APTMS in the hybrid polymer (polyvinylpyridine/SiO2/APTMS) gives rise to a adsorbent with lower adsorption capacity towards BPA and lower porosity. On the other hand, the presence of TEOS in the hybrid polymer (polyvinylpyridine/SiO2) provided a substantial improvement on the surface area and satisfactory adsorption capacity towards BPA compared with polyvinylpyridine/SiO2/APTMS. The organic polymer polyvinylpyridine, in turn, presented a slight superior adsorption capacity towards BPA (295 mg g(-1)) and lower surface area (75.1 m(2) g(-1)) compared with polyvinylpyridine/SiO2 (232 mg g(-1) and 132.5 m(2) g(-1)), but drawbacks of overpressure when packed into extraction columns, which limits its use in solid phase extraction (SPE) procedures. Therefore, polyvinylpyridine/SiO2 has demonstrated the best performance towards BPA adsorption in aqueous medium, thereby showing the symbiosis of organic and inorganic components for obtaining materials with complementary properties. (AU)

• Processo FAPESP: 14/50867-3 - INCT 2014: Instituto Nacional de Ciência e Tecnologia de Bioanalítica
• Beneficiário: Marco Aurelio Zezzi Arruda
• Modalidade de apoio: Auxílio à Pesquisa - Temático