Scholarlink

<p>Spherical mesoporous carbon was synthesized via in situ formation of ZIF-8/chitosan composites using acetic acid as the solvent. ZIF-8 acted as a morphology template, while chitosan functioned as an eco-friendly activator that enhanced pore formation and surface development during carbonization. Varying the chitosan content revealed that 60% provided the optimal structure, yielding mesoporous carbon with a high surface area of 749.7 m<sup>2</sup>&#xa0;g<sup>−1</sup> and an adsorption capacity of 294.1&#xa0;mg&#xa0;g<sup>−1</sup> for methylene blue. Adsorption followed the Langmuir and pseudo-second-order models, governed by boundary-layer diffusion, with an enthalpy change of 25.4&#xa0;kJ&#xa0;mol<sup>−1</sup> indicating endothermic physical interaction. This study demonstrates a simple and green approach for producing mesoporous carbon with enhanced dye-removal efficiency, highlighting chitosan’s potential as a sustainable activator for advanced carbon materials.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Chitosan as an eco-green activator of mesoporous carbon synthesis for methylene blue adsorbent in water

  • 期刊论文

  • 发表日期：

    2025年12月10日

查看全文
  • E. Santoso,
  • R. Ediati,
  • Y. Kusumawati,
  • D. Prasetyoko,
  • R. Subagyo,
  • L. L. Zulfa,
  • S. Jovita

摘要

Spherical mesoporous carbon was synthesized via in situ formation of ZIF-8/chitosan composites using acetic acid as the solvent. ZIF-8 acted as a morphology template, while chitosan functioned as an eco-friendly activator that enhanced pore formation and surface development during carbonization. Varying the chitosan content revealed that 60% provided the optimal structure, yielding mesoporous carbon with a high surface area of 749.7 m2 g−1 and an adsorption capacity of 294.1 mg g−1 for methylene blue. Adsorption followed the Langmuir and pseudo-second-order models, governed by boundary-layer diffusion, with an enthalpy change of 25.4 kJ mol−1 indicating endothermic physical interaction. This study demonstrates a simple and green approach for producing mesoporous carbon with enhanced dye-removal efficiency, highlighting chitosan’s potential as a sustainable activator for advanced carbon materials.