用于去除环丙沙星抗生素的聚丙烯酰胺功能化氧化石墨烯/藻酸盐珠粒
Polyacrylamide Functionalized Graphene Oxide/Alginate Beads for Removing Ciprofloxacin Antibiotics.
作者信息
Choi Jung-Weon, Choi Sang-June
机构信息
Green Carbon Catalysis Center, Korea Research Institute of Chemical Technology, 141 Gajeong-Ro, Yuseong, Daejeon 34114, Korea.
School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu 41566, Korea.
出版信息
Toxics. 2022 Feb 7;10(2):77. doi: 10.3390/toxics10020077.
Ciprofloxacin (CPX), a widely used antibiotic, was removed by synthesizing graphene oxide/calcium alginate-polyacrylamide (GO/Ca-Alg-PAM) beads, a three-dimensional double-network complex. The synthesis of GO/Ca-Alg-PAM beads was performed by crosslinking and cation exchange mechanisms with graphene oxide (GO), sodium alginate (Na-Alg), and polyacrylamide (PAM). The properties of GO/Ca-Alg-PAM beads were confirmed using field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and a thermogravimetric analysis. Furthermore, isothermal adsorption experiments were performed and fitted using three isothermal adsorption models (Langmuir, Freundlich, and Temkin). The adsorption isotherm experimental data fit well with the Langmuir isotherm model with a value of 6.846 mg/g. In addition, the spontaneous reaction of the CPX adsorption using GO/Ca-Alg-PAM was confirmed by temperature-dependent experiments.
环丙沙星（CPX）是一种广泛使用的抗生素，通过合成氧化石墨烯/海藻酸钙-聚丙烯酰胺（GO/Ca-Alg-PAM）珠粒（一种三维双网络复合物）将其去除。GO/Ca-Alg-PAM珠粒的合成是通过氧化石墨烯（GO）、海藻酸钠（Na-Alg）和聚丙烯酰胺（PAM）的交联和阳离子交换机制进行的。使用场发射扫描电子显微镜、傅里叶变换红外光谱和热重分析对GO/Ca-Alg-PAM珠粒的性能进行了确认。此外，进行了等温吸附实验，并使用三种等温吸附模型（朗缪尔、弗伦德里希和坦金）进行拟合。吸附等温线实验数据与朗缪尔等温线模型拟合良好，值为6.846 mg/g。此外，通过温度依赖性实验证实了使用GO/Ca-Alg-PAM吸附CPX的自发反应。
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