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Meso-architectured siliceous hollow quasi-capsule
Roozbeh Soltani1, Azam Marjani1, Mina Hosseini2
1Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran.
Journal of Colloid and Interface Science
|March 18, 2020
Summary
Meso-architectured mercapto-modified siliceous hollow quasi-capsules (SH-SHQC) effectively remove hazardous reactive dyes like rhodamine B and methylene blue. This novel adsorbent shows high capacity and is synthesized via a facile, one-step ultrasonic-assisted method.
Area of Science:
- Environmental Chemistry
- Materials Science
Background:
- Reactive dyes are highly toxic pollutants, posing risks to mammals.
- Existing methods for dye removal face challenges in efficiency and environmental impact.
Purpose of the Study:
- To synthesize and evaluate novel meso-architectured mercapto-modified siliceous hollow quasi-capsules (SH-SHQC) for reactive dye removal.
- To investigate the adsorption performance of SH-SHQC for rhodamine B (RhB) and methylene blue (MB).
Main Methods:
- A facile, ultrasonic-assisted, one-step sol-gel synthesis protocol was employed to prepare SH-SHQC.
- Batch adsorption experiments were conducted to study the removal of RhB and MB.
- Adsorption isotherms and kinetic models (Langmuir, pseudo-first-order) were analyzed.
Main Results:
- SH-SHQC demonstrated high adsorption capacities for RhB (147.06 mg g⁻¹) and MB (119.05 mg g⁻¹).
- Adsorption data fitted well with the Langmuir isotherm model, indicating monolayer adsorption.
- The pseudo-first-order kinetic model best described the adsorption process.
Conclusions:
- SH-SHQC is a promising and efficient adsorbent for removing reactive dyes from aqueous solutions.
- The novel synthesis method offers a facile and effective route to produce advanced adsorbent materials.
- This study presents the first report on using SH-SHQC for reactive dye cation adsorption.
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