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Tene T, Bellucci S, Guevara M, Arias Arias F, Sáez Paguay MÁ, Quispillo Moyota JM, Arias Polanco M, Scarcello A, Vacacela Gomez C, Straface S, Caputi LS, Torres FJ. Adsorption of Mercury on Oxidized Graphenes. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12173025. [PMID: 36080061 PMCID: PMC9457566 DOI: 10.3390/nano12173025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/17/2022] [Accepted: 08/25/2022] [Indexed: 06/01/2023]
Abstract
Graphene oxide (GO) and its reduced form, reduced graphene oxide (rGO), are among the most predominant graphene derivatives because their unique properties make them efficient adsorbent nanomaterials for water treatment. Although extra-functionalized GO and rGO are customarily employed for the removal of pollutants from aqueous solutions, the adsorption of heavy metals on non-extra-functionalized oxidized graphenes has not been thoroughly studied. Herein, the adsorption of mercury(II) (Hg(II)) on eco-friendly-prepared oxidized graphenes is reported. The work covers the preparation of GO and rGO as well as their characterization. In a further stage, the description of the adsorption mechanism is developed in terms of the kinetics, the associated isotherms, and the thermodynamics of the process. The interaction between Hg(II) and different positions of the oxidized graphene surface is explored by DFT calculations. The study outcomes particularly demonstrate that pristine rGO has better adsorbent properties compared to pristine GO and even other extra-functionalized ones.
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Affiliation(s)
- Talia Tene
- Departamento de Química, Universidad Técnica Particular de Loja, Loja 110160, Ecuador
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, I-00044 Frascati, RM, Italy
| | - Marco Guevara
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, CS, Italy
| | - Fabian Arias Arias
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, CS, Italy
| | - Miguel Ángel Sáez Paguay
- Facultad de Recursos Naturales, Escuela Superior Politécnica de Chimborazo (ESPOCH), Coca 220201, Ecuador
| | | | - Melvin Arias Polanco
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, CS, Italy
- Instituto Tecnológico de Santo Domingo, Área de Ciencias Básicas y Ambientales, Av. Los Próceres, Santo Domingo 10602, Dominican Republic
| | - Andrea Scarcello
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, CS, Italy
- Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, CS, Italy
| | | | - Salvatore Straface
- Department of Environmental Engineering (DIAm) University of Calabria, Via P. Bucci, Cubo 42B, I-87036 Rende, CS, Italy
| | - Lorenzo S. Caputi
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, CS, Italy
- Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, CS, Italy
| | - F. Javier Torres
- Grupo de Química Computacional y Teórica (QCT-UR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá 111711, Colombia
- Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Diego de Robles y Vía Interoceánica, Quito 17-1200-841, Ecuador
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Schumacher PD, Woods NA, Schenk JO, Clark SB. Preconcentration of Trivalent Lanthanide Elements on a Mercury Film from Aqueous Solution Using Rotating Disk Electrode Voltammetry. Anal Chem 2010; 82:5663-8. [DOI: 10.1021/ac101180w] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul D. Schumacher
- Department of Chemistry, Washington State University, Pullman, Washington 99164
| | - Nicholas A. Woods
- Department of Chemistry, Washington State University, Pullman, Washington 99164
| | - James O. Schenk
- Department of Chemistry, Washington State University, Pullman, Washington 99164
| | - Sue B. Clark
- Department of Chemistry, Washington State University, Pullman, Washington 99164
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