Open AccessSynthesis of amino-functionalized silicon fiber cloth composite for effective removal of Cu (II) from wastewater
Author(s) -
Yaoyao Zhang,
Zhengwen Wei,
Guiying Zhang,
Wei Wang
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/983/1/012102
Subject(s) - triethoxysilane , adsorption , fourier transform infrared spectroscopy , langmuir adsorption model , endothermic process , desorption , materials science , surface modification , chemical engineering , composite number , nuclear chemistry , polymer chemistry , chemistry , organic chemistry , composite material , engineering
In this paper, amino modified silica fiber cloth (KSF) was prepared by the chemical grafting method. The SEM, FTIR and TGA techniques were employed for the characterization of the silica fiber cloth (SF) and KSF. FTIR analysis suggests that functional amino groups of γ-aminopropyl triethoxysilane (KH550) were grafted on the surface of KSF. The influence of single factor on adsorption performance was studied. The results showed that the adsorption capacity of KSF can reach 178.46 mg-g 1 , the experimental adsorption data were fitted closely by pseudo-second-order kinetic model, adsorption isotherms were simulated well by Langmuir model. Thermodynamic analysis revealed that the adsorption process was endothermic, entropy-driven and spontaneous. The adsorption-desorption experiments demonstrated that KSF showed no significant removal efficiency loss even after ten consecutive cycles, indicating the good stability of prepared KSF material. Our findings suggested the KSF can serve as potential candidates for the practical application of wastewater containing heavy metals.