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Ordered mesoporous carbon coating on cordierite: synthesis and application as an efficient adsorbent
Ying Wan1, Xiangting Cui, Zhentao Wen
1Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, PR China. ywan@shnu.edu.cn
Journal of Hazardous Materials
|November 4, 2011
Summary
Ordered mesoporous carbon coatings on cordierite substrates effectively adsorb chlorinated organic pollutants from water. These reusable adsorbents show high capacity and efficiency for environmental remediation.
Area of Science:
- Materials Science
- Environmental Chemistry
- Nanotechnology
Background:
- Ordered mesoporous carbons (OMCs) are advanced materials with high surface area and tunable pore structures.
- Developing efficient adsorbents for water purification is crucial for environmental protection.
- Cordierite substrates offer thermal stability and mechanical strength for adsorbent applications.
Purpose of the Study:
- To prepare ordered mesoporous carbon coatings on cordierite substrates.
- To evaluate the adsorption performance of these OMCs for chlorinated organic pollutants in water.
- To assess the reusability and long-term stability of the developed adsorbents.
Main Methods:
- Evaporation induced self-assembly (EISA) using phenolic resins and triblock copolymer F127.
- Characterization using High-Resolution Scanning Electron Microscopy (HRSEM), Transmission Electron Microscopy (TEM), and Nitrogen Sorption.
- Adsorption experiments with p-chlorophenol and p-chloroaniline in aqueous solutions.
Main Results:
- Hexagonally ordered mesoporous carbon structures were successfully coated onto the cordierite substrate.
- High adsorption capacities were achieved: 200 mg/g for p-chlorophenol and 178 mg/g for p-chloroaniline.
- The adsorbents demonstrated excellent reusability over 200 cycles with no significant loss in performance.
Conclusions:
- Ordered mesoporous carbon-coated cordierite monoliths are effective and reusable adsorbents for chlorinated organic pollutants.
- The EISA method provides a viable route for fabricating high-performance water purification materials.
- These materials show promise for large-scale environmental remediation applications.
