{"title":"用于吸附环丙沙星的SiO2/GO/Al2O3纳米复合吸附剂的合成与表征：等温和可重复使用性研究","authors":"Prerna Higgins, Rajeev Kumar, Shaziya H. Siddiqui","doi":"10.1007/s13738-024-03158-9","DOIUrl":null,"url":null,"abstract":"<div><p>Silicon dioxide/graphene oxide/aluminum oxide (SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub>) nanocomposite was prepared for the ciprofloxacin (CPF) drug adsorption. The characterization techniques involving field-emission-scanning-electron-microscopy (FE-SEM) determined the topography of the nanocomposite and high resolution transmission electron microscopy (HR-TEM) determined the particle size for SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub>. The EDX confirmed the elemental composition of the materials incorporated, while the X-RD analysis inferred the crystalline nature of SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub>. The FT-IR analysis showcased the role of the capping groups involved. The present study focuses on the adsorption of ciprofloxacin (CPF) drug onto SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub> regarding kinetics, isotherm, thermodynamics studies, and factors, such as solution pH, temperature, concentration, and time. The outcome showed that the highest adsorption of CPF was observed onto the SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub> composite at pH 6.0. Similarly, the utmost adsorptive capacity of 499.44 mg g<sup>−1</sup> was achieved in 180 min and 500 mgL<sup>−1</sup> CPF solution concentration. The CPF uptake on SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub> was in coordination with the pseudo-second-order equation and Langmuir isotherm, respectively. The thermodynamic parameters ciphered that the uptake of the CPF drug was spontaneous. The drug was easily desorbed using 0.1 M (aq) ethanol solution for six adsorption–desorption cycles.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 2","pages":"407 - 418"},"PeriodicalIF":2.4000,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis and characterization of SiO2/GO/Al2O3 nanocomposite adsorbent for the uptake of ciprofloxacin: isothermal and reusability studies\",\"authors\":\"Prerna Higgins, Rajeev Kumar, Shaziya H. Siddiqui\",\"doi\":\"10.1007/s13738-024-03158-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Silicon dioxide/graphene oxide/aluminum oxide (SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub>) nanocomposite was prepared for the ciprofloxacin (CPF) drug adsorption. The characterization techniques involving field-emission-scanning-electron-microscopy (FE-SEM) determined the topography of the nanocomposite and high resolution transmission electron microscopy (HR-TEM) determined the particle size for SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub>. The EDX confirmed the elemental composition of the materials incorporated, while the X-RD analysis inferred the crystalline nature of SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub>. The FT-IR analysis showcased the role of the capping groups involved. The present study focuses on the adsorption of ciprofloxacin (CPF) drug onto SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub> regarding kinetics, isotherm, thermodynamics studies, and factors, such as solution pH, temperature, concentration, and time. The outcome showed that the highest adsorption of CPF was observed onto the SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub> composite at pH 6.0. Similarly, the utmost adsorptive capacity of 499.44 mg g<sup>−1</sup> was achieved in 180 min and 500 mgL<sup>−1</sup> CPF solution concentration. The CPF uptake on SiO<sub>2</sub>/GO/Al<sub>2</sub>O<sub>3</sub> was in coordination with the pseudo-second-order equation and Langmuir isotherm, respectively. The thermodynamic parameters ciphered that the uptake of the CPF drug was spontaneous. 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引用次数: 0
摘要
制备了二氧化硅/氧化石墨烯/氧化铝（SiO2/GO/Al2O3）纳米复合材料对环丙沙星（CPF）药物的吸附。表征技术包括场发射扫描电子显微镜（FE-SEM）确定纳米复合材料的形貌，高分辨率透射电子显微镜（HR-TEM）确定SiO2/GO/Al2O3的粒度。EDX证实了所加入材料的元素组成，而X-RD分析推断了SiO2/GO/Al2O3的结晶性质。FT-IR分析显示了所涉及的封顶基团的作用。本文研究了环丙沙星（CPF）药物在SiO2/GO/Al2O3表面的吸附动力学、等温线、热力学以及溶液pH、温度、浓度和时间等因素。结果表明，当pH为6.0时，CPF在SiO2/GO/Al2O3复合材料上的吸附量最高。同样，在180 min和500 mgL−1 CPF溶液浓度下，CPF的最大吸附量为499.44 mg g−1。CPF在SiO2/GO/Al2O3上的吸附分别符合拟二阶方程和Langmuir等温线。热力学参数表明CPF药物的摄取是自发的。用0.1 M （aq）的乙醇溶液进行6次吸附-解吸。
Synthesis and characterization of SiO2/GO/Al2O3 nanocomposite adsorbent for the uptake of ciprofloxacin: isothermal and reusability studies
Silicon dioxide/graphene oxide/aluminum oxide (SiO2/GO/Al2O3) nanocomposite was prepared for the ciprofloxacin (CPF) drug adsorption. The characterization techniques involving field-emission-scanning-electron-microscopy (FE-SEM) determined the topography of the nanocomposite and high resolution transmission electron microscopy (HR-TEM) determined the particle size for SiO2/GO/Al2O3. The EDX confirmed the elemental composition of the materials incorporated, while the X-RD analysis inferred the crystalline nature of SiO2/GO/Al2O3. The FT-IR analysis showcased the role of the capping groups involved. The present study focuses on the adsorption of ciprofloxacin (CPF) drug onto SiO2/GO/Al2O3 regarding kinetics, isotherm, thermodynamics studies, and factors, such as solution pH, temperature, concentration, and time. The outcome showed that the highest adsorption of CPF was observed onto the SiO2/GO/Al2O3 composite at pH 6.0. Similarly, the utmost adsorptive capacity of 499.44 mg g−1 was achieved in 180 min and 500 mgL−1 CPF solution concentration. The CPF uptake on SiO2/GO/Al2O3 was in coordination with the pseudo-second-order equation and Langmuir isotherm, respectively. The thermodynamic parameters ciphered that the uptake of the CPF drug was spontaneous. The drug was easily desorbed using 0.1 M (aq) ethanol solution for six adsorption–desorption cycles.
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