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Investigation on preparation of carboxymethyl chitosan modified sodium ferric silicate and its adsorption properties
Journal of Vinyl and Additive Technology ( IF 2.7 ) Pub Date : 2021-07-28 , DOI: 10.1002/vnl.21855
Mingyan Chen 1 , Xinkai Feng 1 , Jie Liu 1 , Yucheng Liu 1 , Yihong Bai 1 , Ziying Wang 1
Affiliation  

The layered material of sodium ferric silicate (SFS) has good adsorption properties for cationic dyes, but its stacking properties limit its application. The organic–inorganic composite assembled by macromolecular polymer and inorganic material can improve this situation. Carboxymethyl chitosan (CC) was loaded onto SFS, and the compound was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscope (TEM), Brunauer–Emmett–Teller (BET), zero energy thermonuclear assembly (Zeta), and Fourier transform infrared spectroscopy (FT-IR). The results showed that CC was successfully supported in the layered structure of SFS, and the adsorption capacity of the composite for methylene blue (MB) was 729.67 mg g−1. The adsorption process was described by pseudo second-order kinetics, Langmuir isothermal equation, and intraparticle diffusion. The adsorption process was endothermic and spontaneous, and the monomolecular adsorption was dominant.

中文翻译:

羧甲基壳聚糖改性硅酸铁钠的制备及其吸附性能研究

硅酸铁钠(SFS)层状材料对阳离子染料具有良好的吸附性能,但其堆积性能限制了其应用。由高分子聚合物和无机材料组装而成的有机-无机复合材料可以改善这种情况。将羧甲基壳聚糖 (CC) 加载到 SFS 上,并通过 X 射线衍射 (XRD)、X 射线光电子能谱 (XPS)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、Brunauer-Emmett 进行表征–Teller (BET)、零能热核组装 (Zeta) 和傅里叶变换红外光谱 (FT-IR)。结果表明,CC成功负载在SFS的层状结构中,复合材料对亚甲基蓝(MB)的吸附量为729.67 mg g -1. 吸附过程由拟二级动力学、Langmuir 等温方程和颗粒内扩散描述。吸附过程是吸热自发的,以单分子吸附为主。
更新日期:2021-07-28
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