Characterization and comprehension of zeolite NaY/mesoporous SBA-15 composite as adsorbent for paraquat

• Published in: Materials chemistry and physics Vol. 193; pp. 470 - 476
• Main Authors: Osakoo, Nattawut, Pansakdanon, Chaianun, Sosa, Narongrit, Deekamwong, Krittanun, Keawkumay, Chalermpan, Rongchapo, Wina, Chanlek, Narong, Jitcharoen, Juthamas, Prayoonpokarach, Sanchai, Wittayakun, Jatuporn
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.06.2017; Elsevier BV
• Subjects: Adsorbents; Adsorption; Basicity; Chemical synthesis; Composite; Langmuir; NaY; Paraquat; SBA-15; Silica; Silica fume; Silicon dioxide; Studies; XPS; Paraquat; XPS; Composite; SBA-15; Langmuir; NaY
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2017.03.002

NaY was synthesized from fumed silica and further modified to form a composite with SBA-15. Textural properties and basicity of the composite NaY-SBA-15 were between those of the parent materials. Paraquat adsorption on NaY was 204.1 mg/g, higher than that on NaY synthesized with rice husk silica from the previous work. SBA-15 was a poor adsorbent for paraquat. Based on the weight of NaY, the adsorption capacity of analytical-grade paraquat on the NaY-SBA-15 composite was 241.5 mg/g-NaY. Moreover, the composite adsorbed blue dye from a commercial grade paraquat. Interaction between the NaY-SBA-15 and paraquat could be from C and N atoms in paraquat with oxygen atom on NaY-SBA-15. [Display omitted] •Zeolite NaY/mesoporous SBA-15 composite was synthesized with a simple method.•NaY and SBA-15 coexisted in the composite confirmed by FTIR, CO2-TPD and XPS.•Adsorption capacity of paraquat (mg/g-NaY) was improved by NaY and SBA-15 composite.•C and N atoms in paraquat could interact with oxygen atom on NaY-SBA-15 composite.