Synthesis of CTAB functionalized MnS/PVP-Ag nanocomposite for Hg2+ detection, photocatalysis and antibacterial application
| Autor: | Ajith M. Thomas, B. Hari Kumar, Asad Syed, Lija L. Raju, R. Janani, Abdallah M. Elgorban, S. Sudheer Khan, M. Rubashree, Ali H. Bahkali |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Metal ions in aqueous solution 02 engineering and technology 010402 general chemistry 01 natural sciences Inorganic Chemistry chemistry.chemical_compound mental disorders medicine Surface charge Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy Aqueous solution Nanocomposite Polyvinylpyrrolidone Organic Chemistry 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Transmission electron microscopy Photocatalysis Agarose 0210 nano-technology medicine.drug Nuclear chemistry |
| Zdroj: | Optical Materials. 110:110452 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2020.110452 |
| Popis: | Heavy metal contamination was increasing day by day due to the discharge of waste from industries, mines, oil refineries, etc. Among them mercury is the most toxic pollutant that adversely affect the quality of environmental waters. The present study reports the preparation of CTAB functionalized MnS/PVP-Ag nanocomposites (NCs) for Hg2+ detection form aqueous samples. MnS/PVP-Ag NCs was analyzed by zeta sizer, transmission electron microscope (TEM), energy dispersive X-ray spectroscopy (EDAX), UV–visible spectrophotometer, particle size analyzer and X-ray diffraction (XRD). The NCs average size was 36 ± 1 nm and the surface charge was 33.54 ± 2.5 mV. The Hg2+ ion detection was indicated by the disappearance of NCs brownish yellow colour into colourless. The probe showed excellent linearity in Hg2+ detection from 0.1 nM to 1 μM with R2 value of 0.96. The LOD of reported probe was determined to be 2.12 nM. The MnS/PVP-Ag NCs incorporated paper and agarose gel showed selective and sensitive Hg2+ detection. The environmental parameters (pH, temperature, salinity) influence on Hg2+ detection was investigated. The interference of competitive metal ions on Hg2+ detection was found to be negligible. In addition, the NCs showed outstanding photocatalytic activity. The NCs were also showed good antimicrobial activity against Bacillus subtilis and Escherichia coli. Hence, the reported CTAB-MnS/PVP-Ag NCs can be applied for Hg2+ detection, environmental remediation, water treatment, etc. |
| Databáze: | OpenAIRE |
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