Chien Minyuan, Chen Shiachung, Huang Kuanyi, Moja Tlou Nathaniel, Hwang Shyhshin
Department of Vehicle Engineering, Chien-hsin University of Science and Technology, Taoyuan 320678, Taiwan.
R&D Center for Smart Manufacturing, Chung Yuan Christian University, Taoyuan 32023, Taiwan.
Polymers (Basel). 2025 Jan 14;17(2):189. doi: 10.3390/polym17020189.
Graphene's incorporation into polymers has enabled the development of advanced polymer/graphene nanocomposites with superior properties. This study focuses on the use of a microcellular foamed polystyrene (PS)/graphene (GP) nanocomposite (3 wt%) for nickel (II) ion removal from aqueous solutions. Adsorption behavior was evaluated through FTIR, TEM, SEM, TGA, and XRD analyses. Key factors, including initial ion concentration, pH, temperature, and sorbent dosage, were examined. Results showed optimal nickel removal at specific pH levels with removal efficiency decreasing from 91 to 80% as Ni (II) concentrations increased from 10 to 100 mg/L. The adsorption capacity improved from 11 to 130 mg/g. Equilibrium data aligned with Langmuir and Freundlich isotherm models, while adsorption kinetics followed a second-order kinetic model. These findings highlight the potential of PS/GP nanocomposites for nickel ion removal, offering a promising solution for small-scale industrial applications.
将石墨烯掺入聚合物中，使得具有优异性能的先进聚合物/石墨烯纳米复合材料得以开发。本研究聚焦于使用微孔发泡聚苯乙烯（PS）/石墨烯（GP）纳米复合材料（3 wt%）从水溶液中去除镍（II）离子。通过傅里叶变换红外光谱（FTIR）、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、热重分析（TGA）和X射线衍射（XRD）分析对吸附行为进行了评估。研究了初始离子浓度、pH值、温度和吸附剂用量等关键因素。结果表明，在特定pH值水平下镍的去除效果最佳，随着镍（II）浓度从10 mg/L增加到100 mg/L，去除效率从91%降至80%。吸附容量从11 mg/g提高到130 mg/g。平衡数据符合朗缪尔和弗伦德里希等温线模型，而吸附动力学遵循二级动力学模型。这些发现突出了PS/GP纳米复合材料在去除镍离子方面的潜力，为小规模工业应用提供了一个有前景的解决方案。
