功能化-MnO2/壳聚糖纳米复合材料：一种有前途的用于去除铅离子的吸附剂。
Functionalized-MnO2/chitosan nanocomposites: A promising adsorbent for the removal of lead ions.
机构信息
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Center of Excellence in Sensors and Green Chemistry, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
出版信息
Carbohydr Polym. 2016 Aug 20;147:53-59. doi: 10.1016/j.carbpol.2016.03.076. Epub 2016 Mar 28.
In the current study, the surface of alpha manganese dioxide nanorod (α-MnO2) functionalized with γ-aminopropyltriethoxysilane (APTS). The α-MnO2-APTS was used as filler for preparation of chitosan (CS) nanocomposites (NCs). The α-MnO2-APTS/CS NCs were crosslinked with different amount of glutaraldehyde (GA). The effects of the GA content on the morphology, thermal properties and adsorption of NC films were studied. The Fourier transform infrared (FT-IR) results verified the grafting of APTS onto α-MnO2. The amount of APTS grafted onto α-MnO2 was found to be 20wt% by thermo gravimetric analysis. Presented results also show that with increasing crosslinker agent concentration, the thermal stability of CS films were increased. The α-MnO2-APTS/CS NCs were tested and evaluated as a potential adsorbent for the removal of lead ions. The results showed that the adsorbent exhibited a favorable performance for the removal of lead ions. Therefore, α-MnO2-APTS/CS NCs could serve as promising adsorbents.
在当前的研究中，对 γ-氨丙基三乙氧基硅烷（APTS）功能化的α-二氧化锰纳米棒（α-MnO2）的表面进行了研究。α-MnO2-APTS 被用作壳聚糖（CS）纳米复合材料（NCs）的制备的填充剂。用不同量的戊二醛（GA）对α-MnO2-APTS/CS NCs 进行交联。研究了 GA 含量对 NC 薄膜形貌、热性能和吸附性能的影响。傅里叶变换红外（FT-IR）结果证实了 APTS 接枝到α-MnO2 上。通过热重分析发现，α-MnO2 上接枝的 APTS 量为 20wt%。结果还表明，随着交联剂浓度的增加，CS 薄膜的热稳定性增加。对α-MnO2-APTS/CS NCs 作为潜在的铅离子去除吸附剂进行了测试和评估。结果表明，该吸附剂对铅离子的去除表现出良好的性能。因此，α-MnO2-APTS/CS NCs 可以作为有前途的吸附剂。
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