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The Synthesis and Effect of Silver Nanoparticles on the Adsorption of Cu2+ from Aqueous Solutions

Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
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Appl. Sci. 2020, 10(14), 4840; https://doi.org/10.3390/app10144840
Received: 30 May 2020 / Revised: 17 June 2020 / Accepted: 13 July 2020 / Published: 14 July 2020
(This article belongs to the Section Chemical and Molecular Sciences)
The adsorption of Cu2+ ions from an aqueous solution using AgNPs synthesized from Convolvulus arvensis leaf extract was investigated. The characterization of AgNPs was investigated before and after the adsorption of Cu2+ ions via Fourier-transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS), and scanning electron microscopy (SEM) analyses. The adsorbent contained various functional groups in addition to the AgNPs, which contributed to the Cu2+ ions adsorption. The silver nanoparticle surface consisted of spherical particles and deep pores, which adsorbed numerous Cu2+ ions. The influences of dosage, pH, and contact time on adsorption of 10 and 50 mg/L Cu2+ at 298 K, and initial Cu2+ concentrations at 298 and 323 K were studied. It was found that the highest percentage of Cu2+ ions adsorbed from an aqueous solution was 98.99%; the aqueous solution had 10 mg/L of Cu2+ ions and 0.2 g of AgNPs, at pH 12 and 298 K. A pseudo-second kinetics model offered the most accurate description of the process of adsorption. The process of Cu2+ adsorption more resembled a Langmuir rather than a Freundlich isotherm model, including chemical and physical mixed adsorption (mixed adsorption) processes, and was exothermic and spontaneous. View Full-Text
Keywords: AgNPs; Cu2+; green synthesis; adsorption; nanoparticles AgNPs; Cu2+; green synthesis; adsorption; nanoparticles
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MDPI and ACS Style

Al-Senani, G.M.; Al-Kadhi, N. The Synthesis and Effect of Silver Nanoparticles on the Adsorption of Cu2+ from Aqueous Solutions. Appl. Sci. 2020, 10, 4840. https://doi.org/10.3390/app10144840

AMA Style

Al-Senani GM, Al-Kadhi N. The Synthesis and Effect of Silver Nanoparticles on the Adsorption of Cu2+ from Aqueous Solutions. Applied Sciences. 2020; 10(14):4840. https://doi.org/10.3390/app10144840

Chicago/Turabian Style

Al-Senani, Ghadah M., and Nada Al-Kadhi. 2020. "The Synthesis and Effect of Silver Nanoparticles on the Adsorption of Cu2+ from Aqueous Solutions" Applied Sciences 10, no. 14: 4840. https://doi.org/10.3390/app10144840

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