Dual template using P123-gelatin for synthesized large mesoporous silica for enhanced adsorption of dyes

• Published in: South African journal of chemical engineering Vol. 43; pp. 312 - 326
• Main Authors: Safitri, Widiya Nur, Habiddin, Habiddin, Ulfa, Maria, Trisunaryanti, Wega, Bahruji, Hasliza, Holilah, Holilah, Rohmah, Alya Awinatul, Sholeha, Novia Amalia, Jalil, Aishah Abdul, Santoso, Eko, Prasetyoko, Didik
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-01-2023; Elsevier
• Subjects: Dual template; Dye; Gelatin; Mesoporous silica; Pluronic P123; Pluronic P123; Dye; Dual template; Gelatin; Mesoporous silica
• ISSN: 1026-9185
• DOI: 10.1016/j.sajce.2022.11.011

•Mesoporous silica (MS) with large mesopores was synthesized using a sol-gel method.•Dual template gelatin and Pluronic P123 was used for constructing mesopore structure.•MS-0.2 showed the highest adsorption capacity for MB adsorption.•Isothermal and kinetics of all MS followed Langmuir and pseudo second order.•MS-0.2 showed good potential as a reusable adsorbent for removing MB.
Mesoporous Silica with a large mesopore channel was synthesized using the sol-gel method for dye adsorption. A dual template consisting of P123 and gelatin at different ratios was employed in the sol-gel synthesis to enhance surface area and mesopore diameter. Gelatin is a green pore directing agent that strengthens P123 thermal stability during the calcination of silicate gel. Optimization of P123:gelatin ratio to 1:0.02 increased the surface area of mesoporous silica to 561.9 m2/g and expanded the pore diameter to 10 nm. The large pore diameter and surface area enhanced methylene blue adsorption capacity to 363.63 mg/g. The adsorption of methylene blue on mesoporous silica follows the pseudo second-order kinetic and the Langmuir model. Regeneration studies using thermal and chemical treatments exhibited the potential of mesoporous silica as an adsorbent for multiple adsorption-desorption of dyes.