Hassle free synthesis of nanodimensional Ni, Cu and Zn sulfides for spectral sensing of Hg, Cd and Pb: A comparative study
| Autor: | Zarina Ansari, Abhijit Saha, Kamalika Sen, Shib Shankar Singha |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Nickel sulfide Absorption spectroscopy Sulfide Metal ions in aqueous solution Inorganic chemistry Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Zinc sulfide Atomic and Molecular Physics and Optics 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Copper sulfide symbols.namesake chemistry symbols 0210 nano-technology Raman spectroscopy Instrumentation Spectroscopy |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 176:67-78 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2017.01.005 |
| Popis: | A simple room temperature synthesis method of Ni, Cu and Zn sulfide nanoparticles (NPs) in aqueous medium is reported here. The NPs stabilized in aqueous medium by the citrate ions were characterized by UV–vis, ζ potentials, TEM and Raman spectroscopic techniques. The solid NPs could be isolated from the aqueous medium when allowed to stand for a prolonged time (~ 20 h). The solids were also characterized by IR and powder X-ray analysis. The nanoparticles were further used for the development of facile optical sensing and detection of heavy metal ions at trace scale. Alterations in the absorption spectra of the generated NPs were indicative of their interactions with heavy metal ions. Raman spectral measurements further validate the detection technique. It is found that out of the three synthesized nanoparticles, nickel sulfide NP is a specific sensor for mercury ions whereas zinc sulfide and copper sulfide NPs act as sensors for Hg2 +, Cd2 + and Pb2 +. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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