Optimization of Mesoporous Carbon Adsorbents from Sucrose and Aerosil 380 Hydrophilic Silica by Hard Templating
Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Mesoporous carbon materials were synthesized by using sucrose as a carbon source and hydrophilic Aerosil 380 as a hard template. A two-stage optimization process based on the response surface methodology using a central composite design (RSM-CCD) was employed to enhance the adsorption performance of the material for the crystal violet (CV) dye. The first stage of optimization yielded a maximum adsorption capacity of 155.4 mg g –1 under carbonization conditions of 800 °C, 18.41 °C min –1, and 60 min. Further, optimization of sucrose (23% m/V) and silica template (17.07% m/V) concentrations led to a significantly higher capacity of 223.5 mg g –1 . Characterization techniques confirmed the formation of amorphous graphitic structure (XRD), thermal decomposition of the organic phase near 350 °C (TGA-DTG), and effective Aerosil 380 removal confirmed by EDS and LIBS. Morphological and structural analyses using scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) revealed a disordered mesoporous structure with turbostratic carbon layers. The optimized carbon exhibited a hierarchical mesoporous structure, with an A total of 607.8 m 2 g –1, V total of 1.458 cm 3 g –1, and an average D p of 9.6 nm, demonstrating strong potential for micropollutant adsorption applications.
Source: ACS Omega
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,935
OpenAlex ID: W4413273622