期刊
MOLECULES
卷 23, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/molecules23061485
关键词
beta-cyclodextrin; hybrid silicon; nano-adsorbent material; adsorption
资金
- National Key Research and Development Program [2017YFC1601000, 2016YFD0400304]
- Natural Science Foundation of Jiangsu Province [BK20140143]
- National first-class discipline program of Food Science and Technology [JUFSTR20180203]
A novel cyclodextrin-functionalized hybrid silicon nano-adsorbent material (6-EA-beta-CD-Si) was synthesized via the nucleophilic substitution method. The structure was detected by Fourier transform infrared (FT-IR), X-ray, thermogravimetric analysis, and Brunauer-Emmett-Teller (BET) analysis. Results reveal that the BET surface area of 6-EA-beta-CD-Si is 240 m(2)/g and the average pore size is 4.16 nm. The adsorption properties of 6-EA-beta-CD-Si onto methylene blue (MB) were studied and fitted with adsorption kinetic models. Both the Freundlich adsorption isotherm model and pseudo-second-order model were fitted with well shows that the multi-layer adsorption with chemisorption and physisorption co-existing in the system. The maximum adsorption capacities are 39.37, 39.21, 36.90, and 36.36 mg/g at temperatures 303, 313, 323, and 333 K, respectively. The maximum removal rate of MB could reach 99.5%, indicating the potential application value of 6-EA-beta-CD-Si in wastewater treatment. The adsorption mechanisms of 6-EA-beta-CD-Si showed that the hydrophobic cave of beta-CD plays an important role on the adsorption of MB.
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