Synthesis of 3D hierarchical flower-like calcium sulfate microspheres for cadmium removal from wastewater

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED Microporous and Mesoporous Materials Pub Date : 2024-08-22 DOI:10.1016/j.micromeso.2024.113304

Hengdiao Xu , Chang Chen , Yanxin Chen , Shaowu Jiu , Yan Liu

引用次数: 0

Abstract

Novel three-dimensional hierarchical flower-like calcium sulfate microspheres (CSMs) were successfully prepared with the assistance of polyethylene glycol, trisodium citrate, and polyacrylic acid. The CSMs were monodispersed as flower-like microspheres constructed from interspersed nanosheets. Their average diameter and Brunauer–Emmett–Teller specific surface area were 15 μm and 16.09 m²/g, respectively. The prepared CSMs were employed as adsorbents in cadmium (Cd(II)) removal from wastewater and their Cd(II) adsorption performances were analyzed. The adsorption kinetic data were best fitted to the pseudo-first-order kinetic model and the experimental isotherm data were precisely fitted to the Freundlich isothermal model. The maximum adsorption capacity of the CSMs could reach up to 18.13 mg/g at 293 K under neutral conditions, affirming the potential utility of the CSMs in Cd(II) removal from wastewater.

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合成用于去除废水中镉的三维分层花状硫酸钙微球

在聚乙二醇、柠檬酸三钠和聚丙烯酸的辅助下，成功制备了新型三维分层花状硫酸钙微球（CSMs）。这些 CSMs 单分散为由穿插的纳米片构成的花状微球。它们的平均直径和布鲁瑙尔-艾美特-泰勒比表面积分别为 15 μm 和 16.09 m2/g。将制备的 CSMs 作为吸附剂用于去除废水中的镉（Cd(II)），并分析了它们对镉（Cd(II)）的吸附性能。吸附动力学数据与伪一阶动力学模型拟合最佳，实验等温线数据与 Freundlich 等温线模型拟合精确。在 293 K 中性条件下，CSMs 的最大吸附容量可达 18.13 mg/g，这肯定了 CSMs 在去除废水中镉(II)方面的潜在用途。

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.