无机材料学报2021，Vol.36Issue(12)：1330-1336,中插3-中插4,9.DOI:10.15541/jim20210063
多级多孔硅酸镍微球的合成及其对碱性品红的高效吸附
Synthesis of Hierarchical Porous Nickel Phyllosilicate Microspheres as Efficient Adsorbents for Removal of Basic Fuchsin
摘要
Abstract
Nickel phyllosilicates have shown considerable potential in many fields such as electrochemistry and catalysis owing to their specific structures, attracting a great attention on preparation and properties of them in recent years. In this study, Ni3Si2O5(OH)4 microspheres were synthesized via a hydrothermal method by using NiCl2 and tetraethyl orthosilicate (TEOS) as the raw materials. Effects of Ni/Si molar ratio and alkali source on the phase composition, morphology and textural property of the products were investigated. Under optimized conditions, the as-synthesized Ni3Si2O5(OH)4 microspheres presented a nanosheets-assembled morphology with an average diameter of ca. 2.5 μm, SBET of 119.6 m2·g-1, pore volume of 0.673 cm3·g-1, and Zeta potential measurements showed that they were negatively charged with pH ranging from 3 to 10. When employed as the adsorbents for basic fuchsin (BF), the Ni3Si2O5(OH)4 microspheres showed an adsorption capacity of 120.7 mg·g-1 with the removal efficiency up to 96.6％ from 50 mg·L-1 solution, superior to most of the referred adsorbents in literatures, and the adsorption kinetic data can be well interpretated via the pseudo-second-order model. Data of the relationship between equilibrium adsorption capacity and BF concentration were well fitted by Freundlich isotherm model with the 1/n value of 0.1678, indicating that the surface was heterogeneous and the adsorption strength was strong.关键词
硅酸镍/水热合成/染料去除/吸附/碱性品红Key words
nickel phyllosilicate/hydrothermal synthesis/dye removal/adsorption/basic fuchsin分类
化学化工引用本文复制引用
王婷婷,史书梅,柳晨媛,朱万诚,张恒..多级多孔硅酸镍微球的合成及其对碱性品红的高效吸附[J].无机材料学报,2021,36(12):1330-1336,中插3-中插4,9.基金项目
Natural Science Foundation of Shandong Province(ZR2018MB033) （ZR2018MB033）
Undergraduate Training Program for Innovation and Entrepreneurship of Shandong Province(S201910446015) （S201910446015）
