Pseudo-SILAR assisted unique synthesis of ZnO/Ag2O nanocomposites for improved photocatalytic and antibacterial performance without cytotoxic effect
| Autor: | Muneeb Ahmad, Tae Joo Park, Muhammad Shahid, Syed Jazib Abbas Zaidi, Muhammad Abdul Basit, Muhammad Saad Khan, Summal Zoha |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanocomposite Cationic polymerization Oxide chemistry.chemical_element 02 engineering and technology Zinc 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Colloid and Surface Chemistry Adsorption chemistry Chemical engineering X-ray photoelectron spectroscopy Rhodamine B Photocatalysis 0210 nano-technology |
| Zdroj: | Colloids and Surfaces A: Physicochemical and Engineering Aspects. 603:125200 |
| ISSN: | 0927-7757 |
| DOI: | 10.1016/j.colsurfa.2020.125200 |
| Popis: | The combination of silver (I) oxide (Ag2O) with zinc oxide (ZnO) evolves the magnificent response of composite for antimicrobial and photocatalytic applications concomitantly. A novel, cost-effective and facile wet-chemical recipe for developing ZnO/Ag2O nanocomposites is realized by customizing pseudo-successive ionic layer adsorption and reaction (p-SILAR) process. Quantitatively as well as qualitatively controlled Ag2O was deposited on flower-like ZnO, termed as ZnO NFs, by carrying out 1–4 cycles of customized p-SILAR. It was affirmed that the cationic adsorption of Ag+ from AgNO3 solution instigates the formation of Ag2O over ZnO NFs via a simple heat-treatment process. Followed by the customary material characterizations including SEM, TEM, XPS etc., the ZnO/Ag2O nanocomposites were tested for controlling the toxic organic dye (Rhodamine B) and harmful bacterial species i.e. E. coli and B. subtilis. A significant increase in the photocatalytic performance of ZnO NFs under ultra-violet (UV) as well as visible (vis) irradiation was obtained by incorporating 2 cycles of Ag2O deposition. Consequently, the degradation rate constant of optimal ZnO/Ag2O-2C was increased to 0.1077 and 0.0104 from 0.0235 and 0.0011 min−1, under UV and vis light respectively. Similarly, ZnO/Ag2O evolved a significant increase in the inhibition zones without exhibiting a considerable decrease in the cell viability of HepG2, which further avowed the bio-compatibility of ZnO NFs having Ag2O. |
| Databáze: | OpenAIRE |
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