Abstract
AbstractThe Ni-Al-NO3 layered double hydroxide (LDH) compound has been intercalated with benzoate anion through an anion exchange process for amoxicillin drug adsorption. The purpose of this research is to synthesize Ni-Al-NO3, ion exchange with benzoate anion to form Ni-Al-Benzoate, and then applying it as an adsorbent of amoxicillin. The adsorption process was carried out using the batch technique. The materials synthesized in this study were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), X-ray ray diffraction (XRD), and Thermogravimetric Analysis/Differential Thermal Analysis (TGA/DTA). The exchange of benzoate in Ni-Al-Benzoate LDH by amoxicillin was followed by UV-Vis spectrophotometry. The pH, LDH amount, and contact time are optimized. The adsorption of amoxicillin by Ni-Al-Benzoate is fit to the pseudo-second-order kinetics model, with an adsorption capacity of 40 mg/ g. The results showed that anion exchange was successfully carried out between benzoate anion and amoxicillin.
Highlights
Layered double hydroxide (LDH), known as hydrotalcite or mixed metal hydroxide, is a group of inorganic materials formed with positive charged layers of layered double hydroxide (LDH) is a biocompatible material
The LDH which was intercalated by organic anions was obtained through a simple method involving mixing Mg-Al-LDH, Ni-Al-LDH, or Zn-Al-LDH which contain carbonate as a precursor
Other works have been carried in the determination of mesalamine content in human serum through the process of preconcentration by SPE with Ni-Al LDH as an anion exchanger and obtained up to 99% percent recovery [12]
Summary
Layered double hydroxide (LDH), known as hydrotalcite or mixed metal hydroxide, is a group of inorganic materials formed with positive charged layers of LDH is a biocompatible material. It has been widely studied due to the anion exchange capacity, both inorganic and organic anions. The positive charge of the LDH layer is balanced by negative charged ions, which can be flexibly exchanged [5]. In the ion exchange method, anion replacement process occurs in the area between layers of hydrotalcite to produce hydrotalcite with specific anions. Carboxylic anions (citrate, oxalate, tartrate, and malate) have been intercalated in the synthesis of LDH through an ion exchange process [6]. Anion acrylate has been successfully exchanged with NO3- anion in the Zn-Al-NO3 interlayer space [7]. The intercalation of benzoate anion in the Ni-Al-NO3 interlayer space was carried out through an ion exchange process
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