The dye adsorption and antibacterial properties of composite polyacrylamide cryogels modified with ZnO
| Autor: | Murat İnal, Murat Gökgöz, Nuran Erduran |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
Composite number Polyacrylamide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry X-ray photoelectron spectroscopy Freundlich equation Orange G Fourier transform infrared spectroscopy 0210 nano-technology Antibacterial activity Nuclear chemistry |
| Zdroj: | Journal of Industrial and Engineering Chemistry. 98:200-210 |
| ISSN: | 1226-086X |
| DOI: | 10.1016/j.jiec.2021.04.001 |
| Popis: | The present study aimed to modify the surface of polyacrylamide cryogels (PAC) with ZnO nanorods (ZNR) to provide them with antibacterial properties. The synthesized ZNR-modified composite PAC (ZMC) characterized by AAS, FTIR, SEM, XRD, XPS, BET surface analysis and TGA studies. A study of the adsorption of Orange G (OG) and antibacterial effect was performed on the synthesized ZMC. The highest adsorption capacity was determined to be at a dye concentration of 142.79 mg/g at 400 ppm, and a pH of 2. From the data obtained, it was found that adsorption fitted the pseudo-second-order kinetic model and Freundlich isotherm. Modified cryogels could be desorbed in a very short time – such as 30 min – and reused approximately twenty times with 80% efficiency. While ZMC cryogels did not show antibacterial activity in the dark, inhibition percentages were determined as 99.79 ± 3.94% and 99.81 ± 1.76%, at 1.78 mg/mL cryogel application, MIC90 values were determined as 1.589 ± 0.063 and 0.660 ± 0.028 mg/mL for Escherichia coli, and Staphylococcus aureus, respectively under visible light. The results showed that the composite cryogels obtained had a very high potential to be applied both in the removal of dyes from wastewater and in the purification of microorganism-contaminated water. |
| Databáze: | OpenAIRE |
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