Journal
NANOMATERIALS
Volume 10, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/nano10091647
Keywords
metal organic framework; active carbon; heavy metal; low-cost adsorbents; lead sensor; Cortaderia selloana
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Funding
- Welsh Government at Swansea University [80761-su-100]
- European Commission under European Regional Development Funds (ERDF) through Ser Cymru II Fellowship at Swansea University [80761-su-100]
- Iran University of Science and Technology
- Welsh Government
- European Commission under ERDF [80761-su-100]
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A new nanocomposite consisting of activated carbon (AC) from theCortaderia selloanaflower and copper-based metal-organic framework (HKUST-1) was synthesized through a single-step solvothermal method and applied for the removal of lead ions from aqueous solution through adsorption. The nanocomposite, AC/HKUST-1, was characterized by Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), and Energy-Dispersive X-ray Spectroscopy (EDX) methods. The SEM images of both HKUST-1 and AC/HKUST-1 contain octahedral crystals. Different factors affecting adsorption processes, such as solution pH, contact time, adsorbent dose, and initial metal pollution concentration, were studied. The adsorption isotherm was evaluated with Freundlich and Langmuir models, and the latter was fitted with the experimental data on adsorption of lead ion. The adsorption capacity was 249.4 mg g(-1)for 15 min at pH 6.1, which is an excellent result rivalling previously reported lead adsorbents considering the conditions. These nanocomposites show considerable potential for use as a functional material in the ink formulation of lead sensors.
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