期刊
NANOMATERIALS
卷 11, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/nano11020388
关键词
bentonite; porous clay heterostructure; volatile organic carbon; toluene; adsorption– desorption
类别
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2017M1A2A2086647]
- Seoul National University of Science and Technology
- National Research Foundation of Korea [2017M1A2A2086647] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
By compounding alginate biopolymer with a porous clay heterostructure, an improved adsorbent for volatile organic compounds was successfully prepared. Through optimization, Alg-PCH demonstrated enhanced thermal stability and adsorption capacity.
A volatile organic compound adsorbent based on a porous clay heterostructure (PCH) with alginate biopolymer was successfully prepared. From N-2 adsorption-desorption analysis, the specific surface area, pore volume, and pore size of bentonite were dramatically increased after introducing the porous structure. Following complexation with alginate (Alg-PCH), the pore volume and pore size were not significantly affected by pore structure. The thermal stability of Alg-PCH shows enhanced thermal stability compared to alginate and alginate beads. The morphology layered structure of Alg-PCH was carried out by transmission electron microscopy (TEM), suggesting the disorder and re-order of the c-axis layer stacking by porous structure and complexation with alginate, respectively, which was well-matched with X-ray diffraction results. To optimize the preparation of Alg-PCH, various reaction conditions (alginate, CaCl2 concentration, bead size, and weight ratio between alginate and PCH) were utilized. According to the toluene adsorption-desorption experiments, the preparation conditions for Alg-PCH were selected as a 2 mm extrusion tip, 0.5% of alginate, and 2% of CaCl2 solution with a 1:50 alginate:PCH weight ratio. Additionally, it shows 61.63 mg/g adsorption capacity with around 49% desorption efficacy under atmospheric temperature and pressure.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据