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Green and simple synthesized graphene/MnO2 quantum dot nanocomposite: characterization and application as an efficient adsorbent for solid-phase extraction of heavy metals by Maryam Babaei; Parviz Aberoomand Azar; Mohammad Saber Tehrani; Manoochehr Farjaminezhad; Syed Waqif Hussain is a Materials Science article available to read on EtoBox.
What is Green and simple synthesized graphene/MnO2 quantum dot nanocomposite: characterization and application as an efficient adsorbent for solid-phase extraction of heavy metals about?
The green and simple synthesized novel graphene/MnO 2 -QD (quantum dot) nanocomposites are reported in the present work. The nanocomposite was applied as solid-phase extraction (SPE) adsorbent for removing Ni 2+ and Cr 6+ heavy metal ions from water and wastewater samples. Graphene (G) and MnO 2 as the nanocomposite components were successfully synthesized by totally green methods. Pomegranate juice was applied to prepare graphene nanosheets and wheat extract for MnO 2 -QDs. The nanocomposite was subsequently characterized by UV-Vis spectroscopy, Fourier transformed infrared spectroscopy, Raman spectrum, high-resolution transmission electron microscope, field-emission scanning electron microscope, and X-ray diffraction techniques. The particle size distribution of MnO 2 -QDs was in the range of 2-6 nm. Important experimental variables that could affect SPE performance (removal time and temperature, dosage of adsorbent and analyte, pH values) were investigated and optimized. Under optimized conditions, the limits of detection of heavy metal elements ranged from 0.33 to 0.58 mg L -1 . Repeatability and reproducibility of the proposed method investigated and varied between 3.9% and 5.
Who reads Green and simple synthesized graphene/MnO2 quantum dot nanocomposite: characterization and application as an efficient adsorbent for solid-phase extraction of heavy metals?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Maryam Babaei; Parviz Aberoomand Azar; Mohammad Saber Tehrani; Manoochehr Farjaminezhad; Syed Waqif Hussain
- Publisher
- Springer Science and Business Media LLC
- Published
- 2021
- Language
- EN
- Field
- Materials Science (Physical Sciences)