SBA-16 mesoporous nanosilica: synthesis, characterization and sorption properties

Abstract

Dyes are intensively used in industries such as textiles, plastics, cosmetics, etc., and they are considered major wastes. Due to their chemical structures, dyes are resistant on exposure to sun or water, therefore being difficult to be removed once released into the aquatic environment, having serious environmental impact. Among these dyes, rhodamine is a fluorescent dye. The mesoporous SBA-16 nanosilica has been synthesized by sol−gel process. The rhodamine 110 adsorption process on SBA-16 was explained by Langmuir and Henry isotherm models. The excellent adsorption and fluorescence properties reduction indicated that the mesoporous silica can be efficiently applied in the wastewater treatment.

Mesoporous Silica Nanocatalyst-Based Pyrolysis of a By-Product of Paper Manufacturing, Black Liquor

“…The BL used in the pyrolysis processes was in a viscous liquid state, with a coloration ranging from dark brown to black, and was not subjected to any other treatment, as shown in Figure 2. Within the framework of this study, three types of catalysts (Ni-SBA-16, Ni-SBA-3, and Cu-Zn-MCM-41) were previously developed [8,18]. Briefly, for the Ni-SBA-16 catalyst, Pluronic P127 (Sigma Aldrich, Darmstadt, Germany) was solvated in ultrapure water and 37% hydrochloric acid (Sigma Aldrich, Darmstadt, Germany).…”

“…The mixture was then subjected to hydrothermal treatment (100 °C) for 24 h, and the resulting solid was filtered, dried, and calcined at 550 °C (6 h) to eliminate the residual surfactant. The resulting material, denoted as SBA-16 was used as a support to impregnate the nickel acetate solution (1.34% Ni concentration) (Sigma Aldrich, Darmstadt, Germany), and the resulting product was dried for 24 h in air and then calcined at 550 °C (6 h) [8,18]. Within the framework of this study, three types of catalysts (Ni-SBA-16, Ni-SBA-3, and Cu-Zn-MCM-41) were previously developed [8,18].…”

“…The resulting material, denoted as SBA-16 was used as a support to impregnate the nickel acetate solution (1.34% Ni concentration) (Sigma Aldrich, Darmstadt, Germany), and the resulting product was dried for 24 h in air and then calcined at 550 °C (6 h) [8,18]. Within the framework of this study, three types of catalysts (Ni-SBA-16, Ni-SBA-3, and Cu-Zn-MCM-41) were previously developed [8,18]. Briefly, for the Ni-SBA-16 catalyst, Pluronic P127 (Sigma Aldrich, Darmstadt, Germany) was solvated in ultrapure water and 37% hydrochloric acid (Sigma Aldrich, Darmstadt, Germany).…”

“…Then, n-butanol was used as co-surfactant (Sigma Aldrich, Darmstadt, Germany), together with tetraethyl orthosilicate (Sigma Aldrich, Darmstadt, Germany) as silica source, under vigorous mixing for 24 h at 45 • C. The mixture was then subjected to hydrothermal treatment (100 • C) for 24 h, and the resulting solid was filtered, dried, and calcined at 550 • C (6 h) to eliminate the residual surfactant. The resulting material, denoted as SBA-16 was used as a support to impregnate the nickel acetate solution (1.34% Ni concentration) (Sigma Aldrich, Darmstadt, Germany), and the resulting product was dried for 24 h in air and then calcined at 550 • C (6 h) [8,18].…”

Eco-Friendly Alternative Disposal through the Pyrolysis Process of Meat and Bone Meal

“…The SBA-16 support was prepared following a previously developed method [ 35 ]. Briefly, 1.5 g Pluronic P127 (Sigma Aldrich, Darmstadt, Germany) was dissolved (under magnetic stirring at ambient temperature) in 72 mL ultrapure water and 7 mL 37% HCl (Sigma Aldrich, Darmstadt, Germany).…”