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Rashidi S, Soleiman-Beigi M, Kohzadi H. Rapid and efficient removal of water-soluble dyes via natural asphalt oxide as a new carbonaceous super adsorbent; NA-oxide synthesis and characterization. Sci Rep 2024; 14:24384. [PMID: 39420048 DOI: 10.1038/s41598-024-75106-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 10/01/2024] [Indexed: 10/19/2024] Open
Abstract
In this study, natural asphalt was oxidized to synthesize a new nano-structure adsorbent for dye removal. The functionalization of natural asphalt by oxidation introduced new properties that influenced its activity. The process of oxidizing natural asphalt with potassium permanganate resulted in a low-cost adsorbent, which can potentially be a more affordable option compared with synthetic alternatives. Characterization analysis confirmed the enhanced surface area, improving dye interaction and adsorption. The interconnected channels and capillaries of the oxidized natural asphalt facilitated the capillary action drawing in liquids, including dyes. The distinctive porosity of natural asphalt oxide (NA-oxide) was noted, and the experimental results showed that the NA-oxide nanoadsorbent efficiently adsorbed cationic and anionic dyes in water, with maximum capacities of 14.68 mg.g-1, 17.81 mg.g-1 and 16.47 mg.g-1 for methyl orange, methylene blue and Rhodamine B, respectively. The study investigated various parameters, such as concentration, adsorption dose, pH, contact time, and temperature, affecting the dye removal process. Langmuir, Freundlich, and Temkin isotherms along with pseudo-first and pseudo-second-order kinetic equations were applied to assess the adsorption process, indicating that dyes adhered to the pseudo-first-order model and Langmuir isotherm. Analysis of MO, MB, and RhB dyes revealed conformity to Langmuir isotherm and first-order kinetics. Thermodynamic evaluations like ΔH°, ΔS°, and ∆G° displayed the exothermic and spontaneous nature of dye adsorption on the NA-oxide adsorbent. Furthermore, the absorbent displayed remarkable stability with a recovery rate of 98.45% after ten cycles, signifying its potential for enduring effectiveness in dye removal processes.
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Affiliation(s)
- Shabnam Rashidi
- Department of Chemistry, Faculty of Basic Sciences, Ilam University, P.O. Box 69315-516, Ilam, Iran
| | - Mohammad Soleiman-Beigi
- Department of Chemistry, Faculty of Basic Sciences, Ilam University, P.O. Box 69315-516, Ilam, Iran.
| | - Homa Kohzadi
- Department of Chemistry, Faculty of Basic Sciences, Ilam University, P.O. Box 69315-516, Ilam, Iran
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2
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Le HN, Dao TBT, Nguyen TD, Dinh DA, Ha Thuc CN, Le VH. Revisiting oxidation and reduction reactions for synthesizing a three-dimensional hydrogel of reduced graphene oxide. RSC Adv 2024; 14:30844-30858. [PMID: 39346523 PMCID: PMC11427890 DOI: 10.1039/d4ra05385k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2024] [Accepted: 09/12/2024] [Indexed: 10/01/2024] Open
Abstract
An improvement to Hummers' method involving a cascade-design graphite oxidation reaction is reported to optimize safety and efficiency in the production of graphite oxide (GrO) and graphene oxide (GO). Chemical reduction using highly alkaline ammonia solution is a novel approach to synthesizing reduced graphene oxide (RGO). In this original research, we revisit the oxidation and reduction reactions, providing significant findings regarding the synthetic pathway to obtain a bioinspired water-intercalated hydrogel of RGO nanosheets. Influential factors in the graphite oxidation reaction, typically the exothermic reaction temperature and hydrogen peroxide effect, are described. Furthermore, the chemical reaction of GO reduction using highly alkaline ammonia solution (pH 14) was investigated to produce hydrated RGO nanosheets assembled in a hydrogel structure (97% water). Three-dimensional assembly and water intercalation are key to preserve the non-stacking state of RGO nanosheets. Therefore, ultrasound transmission to aqueous channels in the macroscopic RGO hydrogel vibrated and dispersed the RGO nanosheets in water. Analytical results revealed the single-layer nanostructures, functional groups, optical band gaps, optimized C/O ratios, particle sizes and zeta potentials of GO and RGO nanosheets. The reversible self-assembly of RGO hydrogels is essential for many applications, such as RGO coatings and polymer/RGO nanocomposites. In a water purification application, the RGO hydrogel was dispersed in aqueous solution by simple agitation and showed a high capacity for organic dye adsorption. After the adsorption, the RGO/dye particles were easily removed by filtration through ordinary cellulose paper. The process of adsorption and filtration is effective and inexpensive for practical environmental remediation. In summary, a bioinspired structure of RGO hydrogel is conceptualized for prospective nanotechnology.
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Affiliation(s)
- Hon Nhien Le
- Faculty of Materials Science and Technology, University of Science 227 Nguyen Van Cu Street, Ward 4, District 5 Ho Chi Minh City 700000 Vietnam
- Vietnam National University Linh Trung Ward, Thu Duc City Ho Chi Minh City 700000 Vietnam
| | - Thi Bang Tam Dao
- Faculty of Materials Science and Technology, University of Science 227 Nguyen Van Cu Street, Ward 4, District 5 Ho Chi Minh City 700000 Vietnam
- Vietnam National University Linh Trung Ward, Thu Duc City Ho Chi Minh City 700000 Vietnam
| | - Trung Do Nguyen
- Faculty of Materials Science and Technology, University of Science 227 Nguyen Van Cu Street, Ward 4, District 5 Ho Chi Minh City 700000 Vietnam
- Vietnam National University Linh Trung Ward, Thu Duc City Ho Chi Minh City 700000 Vietnam
| | - Duc Anh Dinh
- NTT Hi-Tech Institute, Nguyen Tat Thanh University Ho Chi Minh City 700000 Vietnam
| | - Chi Nhan Ha Thuc
- Faculty of Materials Science and Technology, University of Science 227 Nguyen Van Cu Street, Ward 4, District 5 Ho Chi Minh City 700000 Vietnam
- Vietnam National University Linh Trung Ward, Thu Duc City Ho Chi Minh City 700000 Vietnam
| | - Van Hieu Le
- Faculty of Materials Science and Technology, University of Science 227 Nguyen Van Cu Street, Ward 4, District 5 Ho Chi Minh City 700000 Vietnam
- Multifunctional Materials Laboratory, University of Science Ho Chi Minh City 700000 Vietnam
- Vietnam National University Linh Trung Ward, Thu Duc City Ho Chi Minh City 700000 Vietnam
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Thakur S, Badoni A, Samriti, Sharma P, Ojha A, Swart HC, Kuznetsov AY, Prakash J. Standalone Highly Efficient Graphene Oxide as an Emerging Visible Light-Driven Photocatalyst and Recyclable Adsorbent for the Sustainable Removal of Organic Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:18486-18502. [PMID: 39172065 DOI: 10.1021/acs.langmuir.4c01727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Carbon-based nanostructures are promising eco-friendly multifunctional nanomaterials because of their tunable surface and optoelectronic properties for a variety of energy and environmental applications. The present study focuses on the synthesis of graphene oxide (GO) with particular emphasis on engineering its surface and optical properties for making it an excellent adsorbent as well as a visible light-active photocatalyst. It was achieved by modifying the improved Hummers method through optimizing the synthesis parameters involved in the oxidation process. This controlled synthesis allows for systematic tailoring of structural, optical, and surface functionality, leading to improved adsorption and photocatalytic properties for the sustainable removal of organic pollutants in water treatment. Several spectroscopic and microscopic characterization techniques, such as XRD, SEM, Raman, UV-visible, FTIR, TEM, XPS, BET, etc. were employed to analyze the degree of oxidation, surface chemistry/functionalization, morphological, optical, and structural properties of the synthesized GO nanostructures. The analyses showed excellent surface functionality with surface active sites for better adsorptive removal and a tunable band gap from 2.51 to 2.76 eV exhibiting excellent natural sunlight activity (>99%) for photocatalytic removal of the organic pollutant. Various adsorption isotherms have been studied with excellent adsorption capability (Qmax = 454.54 mg/g) as compared to the literature. The study introduces GO both as a proficient stand-alone (sole) nanoadsorbent as well as a nanophotocatalyst for the efficient removal of organic dye pollutants in water treatment. Additionally, the article highlights the sustainable solar light-induced green chemistry aspects of GO as an excellent recyclable adsorbent as a result of its self-cleaning ability under natural sunlight, demonstrating its potential in real eco-friendly environmental and practical applications.
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Affiliation(s)
- Sahil Thakur
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Ayush Badoni
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Samriti
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Pratibha Sharma
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Abhijeet Ojha
- Department of Materials Science and Engineering, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
| | - Hendrik C Swart
- Department of Physics, University of the Free State, Bloemfontein 9301, Republic of South Africa
| | - Andrej Yu Kuznetsov
- Department of Physics, Centre for Materials Science and Nanotechnology, University of Oslo, Oslo N-0316, Norway
| | - Jai Prakash
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur (H.P.) 177005, India
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Shaha CK, Mahmud MAA, Saha S, Karmaker S, Saha TK. Efficient removal of sparfloxacin antibiotic from water using sulfonated graphene oxide: Kinetics, thermodynamics, and environmental implications. Heliyon 2024; 10:e33644. [PMID: 39040378 PMCID: PMC11261116 DOI: 10.1016/j.heliyon.2024.e33644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 06/14/2024] [Accepted: 06/25/2024] [Indexed: 07/24/2024] Open
Abstract
Pharmaceutical contamination poses a significant threat to global health. Due to their high solubility in water, antibiotics are difficult to remove. This study produced and used sulfonated graphene oxide (SGO) to adsorb sparfloxacin from aquatic environments. UV-Visible, Fourier transform infrared (FTIR), X-ray diffraction (XRD), XPS, SEM, TEM, EDX, particle size, Thermogravimetric analysis (TGA), and acid-base titration were used to characterize synthesized SGO particles. The BET technique determined SGO's surface area (32.25 m2/g). The calculated pHPZC of SGO was 2.5. Sparfloxacin adsorption onto SGO was analyzed using adsorption duration, medium pH, adsorbent dosages, antibiotic concentration, cations, and solution temperature. The pseudo-second-order kinetic model better described experimental kinetic data than the pseudo-first-order and Elovich models. Equilibrium isotherm data supported the Langmuir model, revealing a peak absorption capacity of 1428.57 μmol/g at 25 °C. The kinetic and isotherm models' applicability was assessed using error analysis. A thermodynamic analysis revealed an endothermic, spontaneous adsorption process with a change in entropy (ΔS) of 114.15 J/mol K and enthalpy (ΔH) of 8.44 kJ/mol. A regeneration analysis showed that SGO adsorption efficiency topped 86.4 % after five cycles.
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Affiliation(s)
- Chironjit Kumar Shaha
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment (AERE), Gonokbari, Savar, Dhaka 1349, Bangladesh
| | | | - Sudipta Saha
- Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology, Dhaka 1205, Bangladesh
| | - Subarna Karmaker
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Tapan Kumar Saha
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
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Mahich S, Saini YK, Devra V, Aggarwal K, Kumar A, Kumar D, Singh A, Arya Y. Metal-free adsorption and photodegradation methods for methylene blue dye removal using different reduction grades of graphene oxide. Heliyon 2024; 10:e31702. [PMID: 38867945 PMCID: PMC11167305 DOI: 10.1016/j.heliyon.2024.e31702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 06/14/2024] Open
Abstract
The release of organic pollutants and dyes into the environment by industries has had profound and harmful effects on both humans and ecosystems. Graphene oxide (GO) and its reduced form have been investigated for their effectiveness in removing pollutant dyes. GO nano-powder was synthesized using an improved version of Hummer's method and subsequently thermally reduced at various temperatures, including 125, 150, 175, and 200 °C, under vacuum conditions. In the X-ray diffraction spectra, an intense (001) diffraction peak was initially observed at 9.136° (2θ) for pristine GO. This peak gradually shifted towards higher angles as the reduction process took place and eventually disappeared when the GO was reduced at 200 °C. The intensity ratio of the D and G bands (ID/IG ratio) for GO nano-powder in the Raman spectra decreased from 0.94 to 0.76 due to the reduction process. The FTIR spectra of GO and reduced graphene oxide (rGO) also illustrated the reduction process. The bandgap of pristine GO significantly decreased from 2.31 to 0.73 eV, as determined by ultraviolet-visible (UV-Vis) diffuse reflectance spectrophotometry during the reduction process. The surface area and pore volume of both pristine GO and rGO-150 were determined using the BET (Brunauer-Emmett-Teller) and BJH (Barrett-Joyner-Halenda) methods. The results indicated an increase in the BET surface area from 6.61 to 7.86 m2/g and a corresponding enhancement in pore volume from 0.118 to 0.128 cc/g after reduction. The adsorption and photocatalytic degradation behavior of pristine GO and reduced graphene oxides (rGOs) were examined using methylene blue dye. The pristine GO demonstrated impressive adsorption capability, effectively removing the dye by 85.78 % within just 15 min and achieving nearly 97 % removal after 4 h. In contrast, the highest photocatalytic degradation of methylene blue, about 47.58 %, was attained for the rGO sample reduced at 150 °C under the illumination of visible light.
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Affiliation(s)
- Sanju Mahich
- Department of Physics, University of Rajasthan, Jaipur, Rajasthan, 302004, India
| | - Yogesh Kumar Saini
- Department of Physics, University of Rajasthan, Jaipur, Rajasthan, 302004, India
| | - Vijay Devra
- Janki Devi Bajaj Government Girls College, Kota, Rajasthan, 324001, India
| | - Kanika Aggarwal
- Department of Physics, Sant Longowal Institute of Engineering and Technology, Longowal, Punjab, 148106, India
| | - Anuj Kumar
- Department of Physics, J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, 121006, India
| | - Dinesh Kumar
- Gurugram University, Gurugram, Haryana, 122003, India
| | - Amanpal Singh
- Department of Physics, University of Rajasthan, Jaipur, Rajasthan, 302004, India
| | - Yogendra Arya
- Department of Electrical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, 121006, India
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Nayana K, Sunitha AP. Amphi-Luminescent MoS 2 nanostructure for photocatalytic splitting of water and removal of Methylene Blue. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124190. [PMID: 38554694 DOI: 10.1016/j.saa.2024.124190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 02/24/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
Chemical dyes used in the textile industries are one of the major pollutants in water. Methylene blue (MB) is a commonly seen dye that creates hazardous health problems. In this article the photocatalytic degradation of MB by the nanocatalyst MoS2 (Nano-MoS2) and carbon dot (C Dots) incorporated MoS2 (Nano-CD-MoS2) is reported. The photocatalytic degradation of MB is analyzed based on the electron-hole recombination rate of the catalyst. Photoluminescence emission exhibited by the catalyst is used as a key indicator to probe the electron-hole recombination rate. Nano-MoS2 was synthesized hydrothermally at 180 0C for 8 h from ammonium tetra thiomolybdate (ATTM). C Dot was prepared following a green root from ash guard extract which later mixed with Nano-MoS2 and kept in an autoclave at a temperature 140 °C for 4 h to get Nano-CD-MoS2. The photoluminescence (PL) and photocatalytic behavior of Nano-MoS2 and Nano-CD-MoS2 and their application for water splitting and water purification are reported. The incorporation of graphene and artificial C Dot into MoS2 nanostructures are reported to increase the conductivity and active edge sites of MoS2 that enhances the photocatalytic action. Since green C Dots are eco-friendly and easily synthesizable than artificial C Dots, as a novel study, this article investigated the influence of green C Dots on the PL and photocatalytic performance of nanosized MoS2. Nano-MoS2 and Nano-CD-MoS2 exhibited both upconversion and downconversion PL; accordingly the nanostructures were termed as amphi-luminescent. The amphi-luminescence property widens the photon absorption range and hence enhances the catalytic degradation of dyes. Nano-MoS2 which exhibited lesser intensity of amphi-luminescence emission compared to Nano-CD-MoS2 showed better results in degradation of MB. C Dots may bind with the valence band electrons of MoS2, resulting in the reduction of dangling bonds. Dangling bonds can trap photo-induced excitons to hinder the rate of electron-hole recombination. So, fast electron-hole recombination occurs in Nano-CD-MoS2 than Nano-MoS2. Fast electron-hole recombination supports radiative electron-hole recombination while suppresses the non-radiative energy transfer of electrons and causes high PL intensity. However, according to the energy level diagram, Nano-MoS2 with minimal electron-hole recombination rate is more favorable for O2/O2-,.OH/ OH- and.OH/H2O reactions that facilitate MB degradation. Photocatalytic activity of catalysts were confirmed by measuring the photocurrent from a simple custom-made two-electrode water photolysis cell where the nanocatalysts were dispersed in electrolyte. Lead and steel rods were used as electrodes. Multimeter was used to measure current. Nano-MoS2 exhibited better performance with a maximum photocurrent of 141 µA. Influence of green C Dots in energy levels, PL and photocatalysis of MoS2 and mechanisms of PL and degradation of MB are thoroughly investigated in this article.
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Affiliation(s)
- K Nayana
- Department of Physics, Government Victoria College, Affiliated to University of Calicut, Palakkad, Kerala 678001, India; Department of Physics, N. S. S. College, Affiliated to University of Calicut, Ottapalam, Kerala 679103, India
| | - A P Sunitha
- Department of Physics, Government Victoria College, Affiliated to University of Calicut, Palakkad, Kerala 678001, India.
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7
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Jaramillo-Fierro X, Cuenca G. Theoretical and Experimental Analysis of Hydroxyl and Epoxy Group Effects on Graphene Oxide Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:714. [PMID: 38668208 PMCID: PMC11054681 DOI: 10.3390/nano14080714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/13/2024] [Accepted: 04/16/2024] [Indexed: 04/29/2024]
Abstract
In this study, we analyzed the impact of hydroxyl and epoxy groups on the properties of graphene oxide (GO) for the adsorption of methylene blue (MB) dye from water, addressing the urgent need for effective water purification methods due to industrial pollution. Employing a dual approach, we integrated experimental techniques with theoretical modeling via density functional theory (DFT) to examine the atomic structure of GO and its adsorption capabilities. The methodology encompasses a series of experiments to evaluate the performance of GO in MB dye adsorption under different conditions, including differences in pH, dye concentration, reaction temperature, and contact time, providing a comprehensive view of its effectiveness. Theoretical DFT calculations provide insights into how hydroxyl and epoxy modifications alter the electronic properties of GO, improving adsorption efficiency. The results demonstrate a significant improvement in the dye adsorption capacity of GO, attributed to the interaction between the functional groups and MB molecules. This study not only confirms the potential of GO as a superior adsorbent for water treatment, but also contributes to the optimization of GO-based materials for environmental remediation, highlighting the synergy between experimental observations and theoretical predictions in advances in materials science to improve sustainability.
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Affiliation(s)
- Ximena Jaramillo-Fierro
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - Guisella Cuenca
- Ingeniería Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador;
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8
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Jaramillo-Fierro X, Cuenca G. Enhancing Methylene Blue Removal through Adsorption and Photocatalysis-A Study on the GO/ZnTiO 3/TiO 2 Composite. Int J Mol Sci 2024; 25:4367. [PMID: 38673952 PMCID: PMC11049837 DOI: 10.3390/ijms25084367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
This study focuses on synthesizing and characterizing a graphene oxide/ZnTiO3/TiO2 (GO/ZTO/TO) composite to efficiently remove methylene blue (MB) from water, presenting a novel solution to address industrial dye pollution. GO and ZTO/TO were synthesized by the modified Hummers and sol-gel methods, respectively, while GO/ZTO/TO was prepared using a hydrothermal process. The structural and surface properties of the composite were characterized using various analytical techniques confirming the integration of the constituent materials and suitability for dye adsorption. The study revealed that GO/ZTO/TO exhibits an adsorption capacity of 78 mg g-1 for MB, with only a 15% reduction in adsorption efficiency until the fifth reuse cycle. Furthermore, the study suggests optimal adsorption near neutral pH and enhanced performance at elevated temperatures, indicating an endothermic reaction. The adsorption behavior fits the Langmuir isotherm, implying monolayer adsorption on homogeneous surfaces, and follows pseudo-second-order kinetics, highlighting chemical interactions at the surface as the rate-limiting step. The photocatalytic degradation of MB by GO/ZTO/TO follows pseudo-first-order kinetics, with a higher rate constant than that of GO alone, demonstrating the enhanced photocatalytic activity of the composite. In conclusion, GO/ZTO/TO emerges as a promising and sustainable approach for water purification, through an adsorption process and subsequent photocatalytic degradation.
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Affiliation(s)
- Ximena Jaramillo-Fierro
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - Guisella Cuenca
- Ingeniería Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador;
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9
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Yesmin S, Mahiuddin M, Nazmul Islam ABM, Karim KMR, Saha P, Khan MAR, Ahsan HM. Piper chaba Stem Extract Facilitated the Synthesis of Iron Oxide Nanoparticles as an Adsorbent to Remove Congo Red Dye. ACS OMEGA 2024; 9:10727-10737. [PMID: 38463303 PMCID: PMC10918656 DOI: 10.1021/acsomega.3c09557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/31/2024] [Accepted: 02/07/2024] [Indexed: 03/12/2024]
Abstract
In this study, a straightforward, eco-friendly, and facile method for synthesizing iron oxide nanoparticles (IONPs) utilizing Piper chaba steam extract as a reducing and stabilizing agent has been demonstrated. The formation of stable IONPs coated with organic moieties was confirmed from UV-vis, FTIR, and EDX spectroscopy and DLS analysis. The produced IONPs are sufficiently crystalline to be superparamagnetic having a saturation magnetization value of 58 emu/g, and their spherical form and size of 9 nm were verified by XRD, VSM, SEM, and TEM investigations. In addition, the synthesized IONPs exhibited notable effectiveness in the removal of Congo Red (CR) dye with a maximum adsorption capacity of 88 mg/g. The adsorption kinetics followed pseudo-second-order kinetics, meaning the adsorption of CR on IONPs is mostly controlled by chemisorption. The adsorption isotherms of CR on the surface of IONPs follow the Langmuir isotherm model, indicating the monolayer adsorption on the homogeneous surface of IONPs through adsorbate-adsorbent interaction. The IONPs have revealed good potential for their reusability, with the adsorption efficiency remaining at about 85% after five adsorption-desorption cycles. The large-scale, safe, and cost-effective manufacturing of IONPs is made possible by this environmentally friendly process.
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Affiliation(s)
| | - Md. Mahiuddin
- Chemistry Discipline, Khulna University, Khulna9208, Bangladesh
| | | | | | - Prianka Saha
- Chemistry Discipline, Khulna University, Khulna9208, Bangladesh
| | | | - Habib Md. Ahsan
- Chemistry Discipline, Khulna University, Khulna9208, Bangladesh
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10
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Ghasemi AH, Zoqi MJ, Zanganeh Ranjbar P. Enhanced photocatalytic degradation of methylene blue using a novel counter-rotating disc reactor. Front Chem 2024; 12:1335180. [PMID: 38464603 PMCID: PMC10920357 DOI: 10.3389/fchem.2024.1335180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/09/2024] [Indexed: 03/12/2024] Open
Abstract
Introduction: This research introduces an innovative photocatalytic reactor designed to address challenges in wastewater treatment, with a focus on enhancing dye degradation and reducing Chemical Oxygen Demand (COD). Methods: The reactor is designed with counter-rotational movements of discs to enhance hydrodynamics and mass transfer, along with a 3D-printed, interchangeable component system to boost efficacy. TiO2 nanoparticles, composed of 80% anatase and 20% rutile, are thermally immobilized on glass discs. The effectiveness of various treatment variables was assessed through a Central Composite Design (CCD), guided by a Response Surface Methodology (RSM) model. Results: The RSM analysis reveals that the linear, quadratic, and interactive effects of the counter-rotational movements significantly influence the efficiency of dye and COD removal. The RSM model yields coefficients of determination (R2) values of 0.9758 and 0.9765 for the predictive models of dye and COD removal, respectively. Optimized parameters for dye removal include a pH of 6.05, disc rotation speed of 22.35 rpm, initial dye concentration of 3.15 × 10-5 M, residence time of 7.98 h, and the number of nanoparticle layers set at 3.99, resulting in 96.63% dye removal and 65.81% COD removal under optimal conditions. Discussion: Notably, the reactor demonstrates potential for efficient treatment within a near-neutral pH range, which could reduce costs and resource use by eliminating the need for pH adjustments. The implementation of discs rotating in opposite directions marks a significant advancement in the process of dye removal.
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Affiliation(s)
- Amir Hossein Ghasemi
- Department of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran
| | - Mohamad Javad Zoqi
- Department of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran
| | - Payam Zanganeh Ranjbar
- Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran
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11
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Islam AN, Saha P, Hossain ME, Habib MA, Karim KMR, Mahiuddin M. Green Coffee Bean Extract Assisted Facile Synthesis of Reduced Graphene Oxide and Its Dye Removal Activity. GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2300247. [PMID: 38223893 PMCID: PMC10784199 DOI: 10.1002/gch2.202300247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 11/20/2023] [Indexed: 01/16/2024]
Abstract
To discharge the colored effluents from industries there needs to be effective and affordable treatment options. Adsorption using reduced graphene oxide (rGO) as an adsorbent is a prominent one. In this study, green coffee bean extract (GCBE) is utilized as a safe reducing agent for the reduction of graphene oxide (GO) to synthesize rGO. The formation of rGO is confirmed by a new peak in the UV-vis spectra at 275 nm and a diffraction peak in the XRD patterns at 22°. The effective formation of rGO is further substantiated by a change in the GO peak's properties in the FTIR, EDX, and Raman spectra and a weight loss change in TGA. The SEM and TEM analyses demonstrate the effective production of the nano-sheets of rGO having exfoliated and segregated in a few layers. Furthermore, the obtained rGO exhibited outstanding efficacy in wastewater cleanup, effectively adsorbing MB as a prototype organic dye. The kinetics and isotherm study suggested that the adsorption leads by the chemisorption and monolayer formation on the homogeneous surface of rGO. The maximum adsorption capacity is found to be 89.3 mg g-1. This process offers a fresh opportunity for the economical and safe production of rGO for wastewater treatment.
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Affiliation(s)
| | - Prianka Saha
- Chemistry DisciplineKhulna UniversityKhulna9208Bangladesh
| | | | | | | | - Md. Mahiuddin
- Chemistry DisciplineKhulna UniversityKhulna9208Bangladesh
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12
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Zielińska-Górska M, Sosnowska-Ławnicka M, Jaworski S, Lange A, Daniluk K, Nasiłowska B, Bartosewicz B, Chwalibog A, Sawosz E. Silver Nanoparticles and Graphene Oxide Complex as an Anti-Inflammatory Biocompatible Liquid Nano-Dressing for Skin Infected with Staphylococcus aureus. J Inflamm Res 2023; 16:5477-5493. [PMID: 38026239 PMCID: PMC10676867 DOI: 10.2147/jir.s431565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 10/05/2023] [Indexed: 12/01/2023] Open
Abstract
Background Bacterial skin infections, including Staphylococcus aureus, are a powerful and still not fully resolved problem. The aim of this research was to determine the possibility of using a complex of graphene oxide (GO) encrusted with silver nanoparticles as an effective antibacterial agent against S. aureus and to assess its pro-inflammatory properties. Methods The tests were carried out in vitro on EpiDerm™ Skin, an artificial skin model (MatTek in vitro Life Science Laboratories, Slovak Republic), and the fibroblast cell line (HFF-2 from ATCC, USA). Both models were infected with S. aureus bacteria (ATCC 25923) and then treated with antibiotics or our experimental factors: silver nanoparticles (AgNPs, Nano-koloid, Poland), graphene oxide (GO, NanoPoz, Poland), and complex AgNP-GO (hydrocolloid created by self-assembly). Results The antibacterial effectiveness of the AgNP-GO complex was equivalent to that of the antibiotic. In addition, an increase in the level of pro-inflammatory cytokines was observed under the influence of antibiotic administration, in contrast to the effect of AgNP-GO, which showed very limited pro-inflammatory activity. Conclusion Hydrocolloid of the AgNP-GO complex, administered in the form of a liquid dressing, may act as an antibacterial agent and also reduce inflammation induced by S. aureus infection.
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Affiliation(s)
- Marlena Zielińska-Górska
- Department of Nanobiotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, 02-787, Poland
| | - Malwina Sosnowska-Ławnicka
- Department of Nanobiotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, 02-787, Poland
| | - Sławomir Jaworski
- Department of Nanobiotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, 02-787, Poland
| | - Agata Lange
- Department of Nanobiotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, 02-787, Poland
| | - Karolina Daniluk
- Department of Nanobiotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, 02-787, Poland
| | - Barbara Nasiłowska
- Institute of Optoelectronics, Military University of Technology, Warsaw, 00-908, Poland
| | - Bartosz Bartosewicz
- Institute of Optoelectronics, Military University of Technology, Warsaw, 00-908, Poland
| | - André Chwalibog
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, 1870, Denmark
| | - Ewa Sawosz
- Department of Nanobiotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, 02-787, Poland
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13
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Vassileva P, Tumbalev V, Kichukova D, Voykova D, Kovacheva D, Spassova I. Study on the Dye Removal from Aqueous Solutions by Graphene-Based Adsorbents. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5754. [PMID: 37687447 PMCID: PMC10488637 DOI: 10.3390/ma16175754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/16/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023]
Abstract
In the current investigation, the removal efficiency regarding a cationic dye, methylene blue (MB), from three graphene-based materials was investigated. The materials' characterization process involved instrumental methods such as XRD, XPS, SEM, TEM, FTIR, and nitrogen adsorption at 77 K. The survey examined how various process factors influenced the ability of the studied materials to adsorb cationic dyes. These parameters encompassed contact time, initial dye concentrations, solution pH, and temperature. The adsorption procedure was effectively explained through the application of pseudo-second-order and Langmuir models. The maximum adsorption capacity for the best adsorbent at 293 K was found to be 49.4 mg g-1. In addition, the study also determined the entropy, enthalpy, and Gibbs free energy values associated with the removal of MB and showed that the adsorption of MB is endothermic, feasible, and spontaneous. The results also revealed that the studied materials are suitable adsorbents for the removal of cationic dyes.
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Affiliation(s)
- Paunka Vassileva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (V.T.); (D.K.); (D.V.); (D.K.); (I.S.)
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14
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Ortiz-Anaya I, Nishina Y. Unveiling the Reduction Process of Graphene Oxide by Ascorbic Acid: Grafting and Reduction Sequences for High Surface Area Graphene Materials. Chempluschem 2023; 88:e202300328. [PMID: 37428458 DOI: 10.1002/cplu.202300328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 07/08/2023] [Accepted: 07/10/2023] [Indexed: 07/11/2023]
Abstract
This work reports the synthesis of high surface area reduced graphene oxides using L-ascorbic acid as a reducing agent by precisely controlling the interaction between graphene oxide and L-ascorbic acid. Based on the structural characterization, such as textural properties (specific surface area, pore structure), crystallinity, and carbon chemical state, we identified that the temperature and reaction time are critical parameters to control the stacking degree of the final reduced product. Besides, by performing a time course analysis of the reaction, we identified the side products of the reducing agent by LC-MS and verified the reduction mechanism. Following our results, we proposed an optimum condition for producing a graphene derivative adsorbent with a high surface area. This graphene derivative was tested in an aqueous solution with organic and inorganic pollutants such as methylene blue, methyl orange, and cadmium.
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Affiliation(s)
- Israel Ortiz-Anaya
- Graduate School of Natural Sciences and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Yuta Nishina
- Graduate School of Natural Sciences and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
- Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
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15
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Tene T, Guevara M, Benalcázar Palacios F, Morocho Barrionuevo TP, Vacacela Gomez C, Bellucci S. Optical properties of graphene oxide. Front Chem 2023; 11:1214072. [PMID: 37547907 PMCID: PMC10397392 DOI: 10.3389/fchem.2023.1214072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/29/2023] [Indexed: 08/08/2023] Open
Abstract
The study of the optical properties of graphene oxide (GO) is crucial in designing functionalized GO materials with specific optical properties for various applications such as (bio) sensors, optoelectronics, and energy storage. The present work aims to investigate the electronic transitions, optical bandgap, and absorption coefficient of GO under different conditions. Specifically, the study examines the effects of drying times ranging from 0 to 120 h while maintaining a fixed temperature of 80°C and low temperatures ranging from 40℃ to 100℃ , with a constant drying time of 24 h. Our findings indicate that exposing the GO sample to a drying time of up to 120 h at 80°C can lead to a reduction in the optical bandgap, decreasing it from 4.09 to 2.76 eV. The π - π * transition was found to be the most affected, shifting from approximately 230 nm at 0 h to 244 nm after 120 h of drying time. Absorption coefficients of 3140-5507 ml mg-1 m-1 were measured, which are similar to those reported for exfoliated graphene dispersions but up to two times higher, confirming the improved optical properties of GO. Our findings can provide insights into determining the optimal temperature and duration required for transforming GO into its reduced form for a specific application through extrapolation. The study is complemented by analyzing the elemental composition, surface morphology change, and electrical properties.
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Affiliation(s)
- Talia Tene
- Department of Chemistry, Universidad Técnica Particular de Loja, Loja, Ecuador
| | - Marco Guevara
- Facultad de Ingeniería Mecánica, Escuela Superior Politécnica de Chimborazo (ESPOCH), Riobamba, Ecuador
| | - Freddy Benalcázar Palacios
- Facultad de Ingeniería en Sistemas Electrónica e Industrial, Universidad Técnica de Ambato, Ambato, Ecuador
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16
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Charmas B, Zięzio M, Jedynak K. Assessment of the Porous Structure and Surface Chemistry of Activated Biocarbons Used for Methylene Blue Adsorption. Molecules 2023; 28:4922. [PMID: 37446585 DOI: 10.3390/molecules28134922] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
In the presented research, activated carbons from wheat bran were obtained as a result of pyrolysis and physical activation (CO2 or/and steam). In addition, the obtained materials were subjected to additional modification with superheated steam using the microwave radiation as an energy source. The detailed materials characterization was performed using low-temperature nitrogen adsorption/desorption, Raman spectroscopy, X-ray diffraction, thermal analysis (TG), Boehm's titration, point of zero charge (pHpzc), scanning electron microscopy (SEM) and FT-IR/ATR methods. Moreover, the sorption capacity towards methylene blue (MB) was determined. The activated carbons were characterized with a well-developed surface and pore structure (SBET = 339.6-594.0 m2/g; Vp = 0.157-0.356 cm3/g). Activation in the presence of steam and additional modification with microwave radiation resulted in much better development of the porous structure (SBET = 600.4 m2/g; Vp = 0.380 cm3/g). The materials were shown to possess amorphous structure and thermal stability up to the temperatures of ~450-500 °C. They have good adsorption capacity towards MB varying from 150 mg/g to 241 mg/g depending on activation manner. The adsorption can be described by the pseudo-second order model (R2 = 0.99) and fitted to the Langmuir isotherm.
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Affiliation(s)
- Barbara Charmas
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Magdalena Zięzio
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Katarzyna Jedynak
- Institute of Chemistry, Jan Kochanowski University, Uniwersytecka Str. 7, 25-406 Kielce, Poland
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17
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Cao K, Tian Z, Zhang X, Wang Y, Zhu Q. Green preparation of graphene oxide nanosheets as adsorbent. Sci Rep 2023; 13:9314. [PMID: 37291198 DOI: 10.1038/s41598-023-36595-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 06/06/2023] [Indexed: 06/10/2023] Open
Abstract
As a basic building block of graphene-based materials, graphene oxide (GO) plays an important role in scientific research and industrial applications. At present, numerous methods have been employed to synthesize GO, there are still some issues that need to be solved, thus it is of importance to develop a green, safe and low-cost GO preparation method. Herein, a green, safe and fast method was designed to prepare GO, namely, graphite powder was firstly oxidized in a dilute sulfuric acid solution (H2SO4, 6 mol/L) with hydrogen peroxide (H2O2, 30 wt%) as oxidant, and then exfoliated to GO by ultrasonic treatment in water. In this process, H2O2 was the only oxidant, and no other oxidants were used, thus the explosive nature of GO preparation reaction in the conventional methods could be completely eliminated. This method has other advantages such as green, fast, low-cost and no Mn-based residues. The experimental results confirm that obtained GO with oxygen-containing groups has better adsorption property compared to the graphite powder. As adsorbent, GO can remove methylene blue (50 mg/L) and Cd2+ (56.2 mg/L) from water with removal capacity of 23.8 mg/g and 24.7 mg/g, respectively. It provides a green, fast and low-cost method to prepare GO for some applications such as adsorbent.
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Affiliation(s)
- Kesheng Cao
- School of Chemistry and Environmental Engineering, Henan Key Laboratory of Germplasm Innovation and Utilization of Eco-Economic Woody Plant, Pingdingshan University, Weilai Road, Pingdingshan, 467000, China
| | - Zhengshan Tian
- School of Chemistry and Environmental Engineering, Henan Key Laboratory of Germplasm Innovation and Utilization of Eco-Economic Woody Plant, Pingdingshan University, Weilai Road, Pingdingshan, 467000, China.
| | - Xunyou Zhang
- College of Mechanical and Electrical Engineering, Chizhou University, Chizhou, 247000, China.
| | - Yabo Wang
- School of Chemistry and Environmental Engineering, Henan Key Laboratory of Germplasm Innovation and Utilization of Eco-Economic Woody Plant, Pingdingshan University, Weilai Road, Pingdingshan, 467000, China
| | - Qiuxiang Zhu
- College of Information and Electronic Engineering, Hunan City University, Yingbin East Road, Yiyang, 413000, China
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18
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Han Z, Sun L, Chu Y, Wang J, Wei C, Liu Y, Jiang Q, Han C, Yan H, Song X. Ultrasonication-Tailored Graphene Oxide of Varying Sizes in Multiple-Equilibrium-Route-Enhanced Adsorption for Aqueous Removal of Acridine Orange. Molecules 2023; 28:4179. [PMID: 37241919 PMCID: PMC10223085 DOI: 10.3390/molecules28104179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/15/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Graphene oxide (GO) has shown remarkable performance in the multiple-equilibrium-route adsorption (MER) process, which is characterized by further activation of GO through an in-situ reduction process based on single-equilibrium-route adsorption (SER), generating new adsorption sites and achieving an adsorption capacity increase. However, the effect of GO on MER adsorption in lateral size and thickness is still unclear. Here, GO sheets were sonicated for different lengths of time, and the adsorption of MER and SER was investigated at three temperatures to remove the typical cationic dye, acridine orange (AO). After sonication, we found that freshly prepared GO was greatly reduced in lateral size and thickness. In about 30 min, the thickness of GO decreased dramatically from several atomic layers to fewer atomic layers to a single atomic layer, which was completely stripped off; after that, the monolayer lateral size reduction dominated until it remained constant. Surface functional sites, such as hydroxyl groups, showed little change in the experiments. However, GO mainly reduces the C=O and C-O bonds in MER, except for the conjugated carbon backbone (C-C). The SER adsorption kinetics of all temperatures fitted the pseudo-first-order and pseudo-second-order models, yet room temperature preferred the latter. An overall adsorption enhancement appeared as sonication time, but the equilibrium capacity of SER GO generally increased with thickness and decreased with the single-layer lateral size, while MER GO conversed concerning the thickness. The escalated temperature facilitated the exfoliation of GO regarding the adsorption mechanism. Thus, the isotherm behaviors of the SER GO changed from the Freundlich model to Langmuir as size and temperature changed, while the MER GO were all of the Freundlich. A record capacity of ~4.3 g of AO per gram of GO was obtained from the MER adsorption with a sixty-minute ultrasonicated GO at 313.15 K. This work promises a cornerstone for MER adsorption with GO as an adsorbent.
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Affiliation(s)
- Zhaoyang Han
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Ling Sun
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
- Beijing Guyue New Materials Research Institute, Beijing University of Technology, Beijing 100124, China
| | - Yingying Chu
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Jing Wang
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Chenyu Wei
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Yifang Liu
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Qianlei Jiang
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Changbao Han
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Hui Yan
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Xuemei Song
- Key Laboratory of Advanced Functional Materials, Institute of Advanced Energy Materials and Devices, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
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Munonde TS, Nqombolo A, Hobongwana S, Mpupa A, Nomngongo PN. Removal of methylene blue using MnO 2@rGO nanocomposite from textile wastewater: Isotherms, kinetics and thermodynamics studies. Heliyon 2023; 9:e15502. [PMID: 37151643 PMCID: PMC10161714 DOI: 10.1016/j.heliyon.2023.e15502] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 04/06/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023] Open
Abstract
In this study, the adsorptive removal of methylene blue dye, which is commonly used in textile industries, was investigated using the MnO2@reduced graphene oxide (rGO) adsorbent. The sonication-assisted synthesis from rGO nanosheets and MnO2 nanoparticles resulted to the MnO2@rGO nanocomposite with improved physicochemical properties. The characterization results showed the improved surface area, porous structure and adsorption sites from the nitrogen adsorption-desorption studies, improved morphology from the Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) and the improved crystal structure from X-ray powder diffraction (XRD). The improved physicochemical properties on the MnO2@rGO nanocomposite played a significant role in enhancing the dye removal in textile wastewater. The equilibrium experimental data was best described by the Langmuir isotherm model with a maximum adsorption capacity of 156 mg g-1, suggesting a monolayer adsorption. The kinetic data best fitted the pseudo-second order kinetic model, suggesting a chemisorption adsorption process. The thermodynamic data (ΔG°, ΔH° and ΔS°) confirmed the feasibility, randomness and spontaneous nature of the adsorption process. The mechanism of adsorption involved the hydrogen bonding, π-π interactions and electrostatic interactions. The removal of methylene blue using MnO2@rGO nanocomposite in spiked textile wastewater yielded a 98-99% removal. The method demonstrated competitiveness when compared with literature reported results, paving way for further investigations towards industrial scale applications.
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Affiliation(s)
- Tshimangadzo S. Munonde
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, 2028, South Africa
- Department of Science and Innovation-National Research Foundation South African Research Chair Initiative (DSI-NRF SARChI) in Nanotechnology for Water, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Azile Nqombolo
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, 2028, South Africa
- Department of Science and Innovation-National Research Foundation South African Research Chair Initiative (DSI-NRF SARChI) in Nanotechnology for Water, University of Johannesburg, Doornfontein, 2028, South Africa
- Department of Chemistry, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
| | - Siphosethu Hobongwana
- Department of Science and Innovation-National Research Foundation South African Research Chair Initiative (DSI-NRF SARChI) in Nanotechnology for Water, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Anele Mpupa
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, 2028, South Africa
- Department of Science and Innovation-National Research Foundation South African Research Chair Initiative (DSI-NRF SARChI) in Nanotechnology for Water, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Philiswa Nosizo Nomngongo
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, 2028, South Africa
- Department of Science and Innovation-National Research Foundation South African Research Chair Initiative (DSI-NRF SARChI) in Nanotechnology for Water, University of Johannesburg, Doornfontein, 2028, South Africa
- DSI/Mintek Nanotechnology Innovation Centre, University of Johannesburg, Doornfontein, 2028, South Africa
- Corresponding author.Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, 2028, South Africa.
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Wei D, Guo Y, Feng Y, Lu W, Zhang J, Lin M, Lan X, Liao Y, Lan P, Lan L. Synthesis, characterization, DFT studies, and adsorption properties of sulfonated starch synthesized in deep eutectic solvent. Int J Biol Macromol 2023; 238:124083. [PMID: 36934821 DOI: 10.1016/j.ijbiomac.2023.124083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/01/2023] [Accepted: 03/14/2023] [Indexed: 03/21/2023]
Abstract
In this study, sulfonated starch (SS) was successfully synthesized using sulfamic acid as a sulfonating agent in a deep eutectic solvent (DES). Four-factor and three-level orthogonal experiments were conducted to determine the optimal preparation conditions, which were found to be a molar ratio of starch to urea of 1:20, a reaction temperature of 90 °C, a reaction time of 5 h, and a stirring speed of 200 rpm. The sulfonation reaction mechanism was extensively studied using various techniques, including Fourier transform infrared spectroscopy, elemental analysis, X-ray diffraction, molecular weight, particle distribution, X-ray photoelectron spectroscopy, scanning electron microscopy, and DFT calculations. The results showed that the sulfonation reaction slightly damaged starch granules, occurred on the surface of starch granules, and on the O6 atoms of the glucose unit. SS exhibited a wide pH range of application (5-10), a fast adsorption rate (400 s to reach adsorption equilibrium), and a high adsorption capacity (118.3 mg/g) under optimal conditions. The adsorption process of SS for methylene blue followed the pseudo-first-order kinetic model and was consistent with the Langmuir model, which was endothermic and spontaneous. The adsorption process was attributed to hydrogen bonding and electrostatic interactions.
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Affiliation(s)
- Donglai Wei
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Yingtao Guo
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Yuxian Feng
- Department of Guangxi Industrial Research Institute of New Functional Materials Co., Ltd., Nanning 530022, PR China
| | - Wenqing Lu
- Department of Guangxi Gaoyuan Starch Co., Ltd, Nanning 530108, PR China
| | - Jintao Zhang
- Department of Guangxi Gaoyuan Starch Co., Ltd, Nanning 530108, PR China
| | - Minghao Lin
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Xiongdiao Lan
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Yexin Liao
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China
| | - Ping Lan
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China.
| | - Lihong Lan
- Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, Key Laboratory of New Technology for Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Nanning 530006, PR China.
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21
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Influence of flake size and electrolyte conditions on graphene oxide adsorption of ionic dyes. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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22
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Sarmiento V, Lockett M, Sumbarda-Ramos EG, Vázquez-Mena O. Effective Removal of Metal ion and Organic Compounds by Non-Functionalized rGO. Molecules 2023; 28:649. [PMID: 36677707 PMCID: PMC9864598 DOI: 10.3390/molecules28020649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 01/11/2023] Open
Abstract
Effective removal of heavy metals from water is critical for environmental safety and public health. This work presents a reduced graphene oxide (rGO) obtained simply by using gallic acid and sodium ascorbate, without any high thermal process or complex functionalization, for effective removal of heavy metals. FTIR and Raman analysis show the effective conversion of graphene oxide (GO) into rGO and a large presence of defects in rGO. Nitrogen adsorption isotherms show a specific surface area of 83.5 m2/g. We also measure the zeta-potential of the material showing a value of -52 mV, which is lower compared to the -32 mV of GO. We use our rGO to test adsorption of several ion metals (Ag (I), Cu (II), Fe (II), Mn (II), and Pb(II)), and two organic contaminants, methylene blue and hydroquinone. In general, our rGO shows strong adsorption capacity of metals and methylene blue, with adsorption capacity of qmax = 243.9 mg/g for Pb(II), which is higher than several previous reports on non-functionalized rGO. Our adsorption capacity is still lower compared to functionalized graphene oxide compounds, such as chitosan, but at the expense of more complex synthesis. To prove the effectiveness of our rGO, we show cleaning of waste water from a paper photography processing operation that contains large residual amounts of hydroquinone, sulfites, and AgBr. We achieve 100% contaminants removal for 20% contaminant concentration and 63% removal for 60% contaminant concentration. Our work shows that our simple synthesis of rGO can be a simple and low-cost route to clean residual waters, especially in disadvantaged communities with low economical resources and limited manufacturing infrastructure.
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Affiliation(s)
- Viviana Sarmiento
- Facultad de Odontología, Universidad Autónoma de Baja California, Tijuana 22427, BC, Mexico
- Department of NanoEngineering and Center for Memory and Recording Research, University of California San Diego, La Jolla, CA 92093, USA
| | - Malcolm Lockett
- Department of NanoEngineering and Center for Memory and Recording Research, University of California San Diego, La Jolla, CA 92093, USA
| | - Emigdia Guadalupe Sumbarda-Ramos
- Facultad de Ciencias de la Ingeniería y Tecnología (FCITEC), Universidad Autónoma de Baja California, Valle de las Palmas, Tijuana 22427, BC, Mexico
| | - Oscar Vázquez-Mena
- Department of NanoEngineering and Center for Memory and Recording Research, University of California San Diego, La Jolla, CA 92093, USA
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Fatimah I, Fadillah G, Ayu Rednasari R, Wahyuningsih S. Green reduction of graphene oxide using Annona muricata leaves extract for adsorption of methylene blue. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Verástegui-Domínguez LH, Elizondo-Villarreal N, Martínez-Delgado DI, Gracia-Pinilla MÁ. Eco-Friendly Reduction of Graphene Oxide by Aqueous Extracts for Photocatalysis Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3882. [PMID: 36364657 PMCID: PMC9655637 DOI: 10.3390/nano12213882] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
In the present work, reduced graphene oxide was obtained by green synthesis, using extracts of Larrea tridentata (gobernadora) and Capsicum Chinense (habanero). Graphene oxide was synthesized by the modified Hummers' method and subsequently reduced using natural extracts to obtain a stable and environmentally friendly graphene precursor. Consequently, the gobernadora aqueous extract was found to have a better reducing power than the habanero aqueous extract. This opportunity for green synthesis allows the application of RGO in photocatalysis for the degradation of the methylene blue dye. Degradation efficiencies of 60% and 90% were obtained with these materials.
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Affiliation(s)
- Luz H. Verástegui-Domínguez
- Materiales Nanoestructurados (CICFIM), Facultad de Ciencias Físico Matemáticas (FCFM), Universidad Autónoma de Nuevo León (UANL), 66450 San Nicolás de los Garza, N.L., Mexico
| | - Nora Elizondo-Villarreal
- Materiales Nanoestructurados (CICFIM), Facultad de Ciencias Físico Matemáticas (FCFM), Universidad Autónoma de Nuevo León (UANL), 66450 San Nicolás de los Garza, N.L., Mexico
| | - Dora Irma Martínez-Delgado
- Materiales Nanoestructurados (CICFIM), Facultad de Ciencias Físico Matemáticas (FCFM), Universidad Autónoma de Nuevo León (UANL), 66450 San Nicolás de los Garza, N.L., Mexico
| | - Miguel Ángel Gracia-Pinilla
- Materiales Nanoestructurados (CICFIM), Facultad de Ciencias Físico Matemáticas (FCFM), Universidad Autónoma de Nuevo León (UANL), 66450 San Nicolás de los Garza, N.L., Mexico
- Mesoscale Chemical Systems, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
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Efficient removal of noxious methylene blue and crystal violet dyes at neutral conditions by reusable montmorillonite/NiFe2O4@amine-functionalized chitosan composite. Sci Rep 2022; 12:15499. [PMID: 36109538 PMCID: PMC9478098 DOI: 10.1038/s41598-022-19570-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/31/2022] [Indexed: 11/08/2022] Open
Abstract
The jeopardy of the synthetic dyes effluents on human health and the environment has swiftly aggravated, threatening human survival. Hence, sustained studies have figured out the most acceptable way to eliminate this poisonous contaminant. Thereby, our investigation aimed to fabricate montmorillonite/magnetic NiFe2O4@amine-functionalized chitosan (MMT-mAmCs) composite as a promising green adsorbent to remove the cationic methylene blue (MB) and crystal violet (CV) dyes from the wastewater in neutral conditions. Interestingly, MMT-mAmCs composite carries high negative charges at a wide pH range from 4 to 11 as clarified from zeta potential measurements, asserting its suitability to adsorb the cationic contaminants. In addition, the experimental study confirmed that the optimum pH to adsorb both MB and CV was pH 7, inferring the ability of MMT-mAmCs to adsorb both cationic dyes in simple process conditions. Furthermore, the ferromagnetic behavior of the MMT-mAmCs composite is additional merit to our adsorbent that provides facile, fast, and flawless separation. Notably, the as-fabricated composite revealed an auspicious adsorbability towards the adsorptive removal of MB and CV, since the maximum adsorption capacity of MB and CV were 137 and 118 mg/g, respectively. Moreover, the isotherm and kinetic investigatins depicted that the adsorption of both cationic dyes fitted Langmuir and Pseudo 2nd order models, respectively. Besides, the advanced adsorbent preserved satisfactory adsorption characteristics with maximal removal efficacy exceeding 87% after reuse for ten consecutive cycles. More importantly, MMT-mAmCs efficiently adsorbed MB and CV from real agricultural water, Nile river water and wastewater samples at the neutral pH medium, reflecting its potentiality to be a superb reusable candidate for adsorptive removal cationic pollutants from their aquatic media.
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Fandzloch M, Bodylska W, Barszcz B, Trzcińska-Wencel J, Roszek K, Golińska P, Lukowiak A. Effect of ZnO on sol–gel glass properties toward (bio)application. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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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Efficient dual adsorption of eosin Y and methylene blue from aqueous solution using nanocomposite of graphene oxide nanosheets and ZnO nanospheres. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1164-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Removal of mercury(II) from aqueous solution by partially reduced graphene oxide. Sci Rep 2022; 12:6326. [PMID: 35440687 PMCID: PMC9018808 DOI: 10.1038/s41598-022-10259-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 04/05/2022] [Indexed: 12/12/2022] Open
Abstract
Mercury (Hg(II)) has been classified as a pollutant and its removal from aqueous sources is considered a priority for public health as well as ecosystem protection policies. Oxidized graphenes have attracted vast interest in water purification and wastewater treatment. In this report, a partially reduced graphene oxide is proposed as a pristine adsorbent material for Hg(II) removal. The proposed material exhibits a high saturation Hg(II) uptake capacity of 110.21 mg g−1, and can effectively reduce the Hg(II) concentration from 150 mg L−1 to concentrations smaller than 40 mg L−1, with an efficiency of about 75% within 20 min. The adsorption of Hg(II) on reduced graphene oxide shows a mixed physisorption–chemisorption process. Density functional theory calculations confirm that Hg atom adsorbs preferentially on clean zones rather than locations containing oxygen functional groups. The present work, therefore, presents new findings for Hg(II) adsorbent materials based on partially reduced graphene oxide, providing a new perspective for removing Hg(II).
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Ali SA, Mubarak SA, Yaagoob IY, Arshad Z, Mazumder MAJ. A sorbent containing pH-responsive chelating residues of aspartic and maleic acids for mitigation of toxic metal ions, cationic, and anionic dyes. RSC Adv 2022; 12:5938-5952. [PMID: 35424571 PMCID: PMC8981974 DOI: 10.1039/d1ra09234k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/13/2022] [Indexed: 11/21/2022] Open
Abstract
t-Butyl hydroperoxide-initiated cycloterpolymerization of diallylaminoaspartic acid hydrochloride [(CH2[double bond, length as m-dash]CHCH2)2NH+CH(CO2H)CH2CO2H Cl-] (I), maleic acid (HO2CH[double bond, length as m-dash]CHCO2H) (II) and cross-linker tetraallylhexane-1,6-diamine dihydrochloride [(CH2[double bond, length as m-dash]CHCH2)2NH+(CH2)6NH+ (CH2CH[double bond, length as m-dash]CH2)2 2Cl-] (III) afforded a new pH-responsive resin (IV), loaded with four CO2H and a chelating motif of NH+⋯CO2 - in each repeating unit. The removal of cationic methylene blue (MB) (3000 ppm) at pH 7.25 and Pb(ii) (200 ppm) at pH 6 by IV at 298, 313, and 328 K followed second-order kinetics with E a of 33.4 and 40.7 kJ mol-1, respectively. Both MB and Pb(ii) were removed fast, accounting for 97.7% removal of MB within 15 min at 313 K and 94% of Pb(ii) removal within 1 min. The super-adsorbent resin gave respective q max values of 2609 mg g-1 and 873 mg g-1 for MB and Pb(ii). IV was also found to trap anionic dyes; it removed 91% Eriochrome Black T (EBT) from its 50 ppm solutions at pH 2. The resin was found to be effective in reducing priority metal contaminants (like Cr, Hg, Pb) in industrial wastewater to sub-ppb levels. The synthesis of the recyclable resin can be easily scaled up from inexpensive starting materials. The resin has been found to be better than many recently reported sorbents.
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Affiliation(s)
- Shaikh A Ali
- Chemistry Department, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia +966 13 860 4277 +966 13 860 7836
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
| | - Shuaib A Mubarak
- Chemistry Department, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia +966 13 860 4277 +966 13 860 7836
| | - Ibrahim Y Yaagoob
- Chemistry Department, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia +966 13 860 4277 +966 13 860 7836
| | - Zeeshan Arshad
- Chemistry Department, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia +966 13 860 4277 +966 13 860 7836
| | - Mohammad A J Mazumder
- Chemistry Department, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia +966 13 860 4277 +966 13 860 7836
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
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Tene T, Bellucci S, Guevara M, Viteri E, Arias Polanco M, Salguero O, Vera-Guzmán E, Valladares S, Scarcello A, Alessandro F, Caputi LS, Vacacela Gomez C. Cationic Pollutant Removal from Aqueous Solution Using Reduced Graphene Oxide. NANOMATERIALS 2022; 12:nano12030309. [PMID: 35159653 PMCID: PMC8838539 DOI: 10.3390/nano12030309] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/12/2022] [Accepted: 01/13/2022] [Indexed: 12/12/2022]
Abstract
Reduced graphene oxide (rGO) is one of the most well-known graphene derivatives, which, due to its outstanding physical and chemical properties as well as its oxygen content, has been used for wastewater treatment technologies. Particularly, extra functionalized rGO is widely preferred for treating wastewater containing dyes or heavy metals. Nevertheless, the use of non-extra functionalized (pristine) rGO for the removal of cationic pollutants is not explored in detail or is ambiguous. Herein, pristine rGO—prepared by an eco-friendly protocol—is used for the removal of cationic pollutants from water, i.e., methylene blue (MB) and mercury-(II) (Hg-(II)). This work includes the eco-friendly synthesis process and related spectroscopical and morphological characterization. Most importantly, the investigated rGO shows an adsorption capacity of 121.95 mg g−1 for MB and 109.49 mg g−1 for Hg (II) at 298 K. A record adsorption time of 30 min was found for MB and 20 min for Hg (II) with an efficiency of about 89% and 73%, respectively. The capture of tested cationic pollutants on rGO exhibits a mixed physisorption–chemisorption process. The present work, therefore, presents new findings for cationic pollutant adsorbent materials based on oxidized graphenes, providing a new perspective for removing MB molecules and Hg(II) ions.
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Affiliation(s)
- Talia Tene
- Grupo de Investigación Ciencia y Tecnología de Materiales, Universidad Técnica Particular de Loja, Loja 110160, Ecuador;
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, I-00044 Frascati, Italy;
| | - Marco Guevara
- School of Physical Sciences and Nanotechnology, Yachay Tech University, Urcuquí 100119, Ecuador;
- ITECA—Instituto de Tecnologías y Ciencias Avanzadas, Villarroel y Larrea, Riobamba 060104, Ecuador
| | - Edwin Viteri
- Faculty of Mechanical Engineering, Escuela Superior Politécnica de Chimborazo, Riobamba 060155, Ecuador;
| | - Malvin Arias Polanco
- Instituto Tecnológico de Santo Domingo, Área de Ciencias Básicas y Ambientales, Av. Los Próceres, Santo Domingo 10602, Dominican Republic;
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
| | - Orlando Salguero
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
| | - Eder Vera-Guzmán
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
| | - Sebastián Valladares
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
| | - Andrea Scarcello
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
- Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, Italy
- INFN, Sezione LNF, Gruppo Collegato di Cosenza, Via P. Bucci, I-87036 Rende, Cosenza, Italy
| | - Francesca Alessandro
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
- Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, Italy
| | - Lorenzo S. Caputi
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
- Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, Italy
| | - Cristian Vacacela Gomez
- School of Physical Sciences and Nanotechnology, Yachay Tech University, Urcuquí 100119, Ecuador;
- UNICARIBE Research Center, University of Calabria, I-87036 Rende (CS), Italy; (O.S.); (E.V.-G.); (S.V.); (A.S.); (F.A.); (L.S.C.)
- Correspondence:
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Abstract
The unavailability of clean drinking water is one of the significant health issues in modern times. Industrial dyes are one of the dominant chemicals that make water unfit for drinking. Among these dyes, methylene blue (MB) is toxic, carcinogenic, and non-biodegradable and can cause a severe threat to human health and environmental safety. It is usually released in natural water sources, which becomes a health threat to human beings and living organisms. Hence, there is a need to develop an environmentally friendly, efficient technology for removing MB from wastewater. Photodegradation is an advanced oxidation process widely used for MB removal. It has the advantages of complete mineralization of dye into simple and nontoxic species with the potential to decrease the processing cost. This review provides a tutorial basis for the readers working in the dye degradation research area. We not only covered the basic principles of the process but also provided a wide range of previously published work on advanced photocatalytic systems (single-component and multi-component photocatalysts). Our study has focused on critical parameters that can affect the photodegradation rate of MB, such as photocatalyst type and loading, irradiation reaction time, pH of reaction media, initial concentration of dye, radical scavengers and oxidising agents. The photodegradation mechanism, reaction pathways, intermediate products, and final products of MB are also summarized. An overview of the future perspectives to utilize MB at an industrial scale is also provided. This paper identifies strategies for the development of effective MB photodegradation systems.
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Nguyen VT, Ha LQ, Nguyen TDL, Ly PH, Nguyen DM, Hoang D. Nanocellulose and Graphene Oxide Aerogels for Adsorption and Removal Methylene Blue from an Aqueous Environment. ACS OMEGA 2022; 7:1003-1013. [PMID: 35036764 PMCID: PMC8756800 DOI: 10.1021/acsomega.1c05586] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/08/2021] [Indexed: 05/12/2023]
Abstract
The characteristics of aerogel materials such as the low density and large surface area enable them to adsorb large amounts of substances, so they show great potential for application in industrial wastewater treatment. Herein, using a combination of completely environmentally friendly materials such as cellulose nanofibers (CNFs) extracted from the petioles of the nipa palm tree and graphene oxide (GO) fabricated by simple solvent evaporation, a composite aerogel was prepared by a freeze-drying method. The obtained aerogel possessed a light density of 0.0264 g/cm3 and a porosity of more than 98.2%. It was able to withstand a weight as much as 2500 times with the maximum force (1479.5 N) to break up 0.2 g of an aerogel by compression strength testing and was stable in the aquatic environment, enabling it to be reused five times with an adsorption capacity over 90%. The CNF/GO aerogel can recover higher than 85% after 30 consecutive compression recovery cycles, which is convenient for the reusability of this material in wastewater treatments. The obtained aerogel also showed a good interaction between the component phases, a high thermal stability, a 3D network structure combined with thin walls and pores with a large specific surface area. In addition, the aerogel also exhibited a fast adsorption rate for methylene blue (MB) adsorption, a type of waste from the textile industry that pollutes water sources, and it can adsorb more than 99% MB in water in less than 20 min. The excellent adsorption of MB onto the CNF/GO aerogel was driven by electrostatic interactions, which agreed with the pseudo-second-order kinetic model with a correlation coefficient R 2 = 0.9978. The initial results show that the CNF/GO aerogel is a highly durable "green" light material that might be applied in the treatment of domestic organic waste water and is completely recoverable and reusable.
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Affiliation(s)
- Vy T. Nguyen
- Faculty
of Materials Science and Technology, University
of Science, Ho Chi
Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Lam Q. Ha
- Faculty
of Applied Sciences, HCMC University of
Technology and Education, Ho Chi
Minh City 700000, Vietnam
| | - Tu D. L. Nguyen
- Faculty
of Materials Science and Technology, University
of Science, Ho Chi
Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Phuong H. Ly
- Faculty
of Materials Science and Technology, University
of Science, Ho Chi
Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Dang Mao Nguyen
- Faculty
of Materials Science and Technology, University
of Science, Ho Chi
Minh City 700000, Vietnam
- Laboratoire
Innovation Matériau Bois Habitat Apprentissage (LIMBHA), Ecole Supérieure du Bois, 7 Rue Christian Pauc, 44306 Nantes, France
| | - DongQuy Hoang
- Faculty
of Materials Science and Technology, University
of Science, Ho Chi
Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
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Lemon Juice Assisted Green Synthesis of Reduced Graphene Oxide and Its Application for Adsorption of Methylene Blue. TECHNOLOGIES 2021. [DOI: 10.3390/technologies9040096] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Sustainable synthesis of reduced graphene oxide (rGO) is of crucial significance within the development of carbon nanomaterials. In this study, a green and eco-friendly strategy for the synthesis of rGO using lemon juice as the reducing agent for graphene oxide (GO) without using toxic and harmful chemicals was demonstrated. The reduction with lemon juice effectively eliminated the oxygen-containing functionalities of GO and regenerated the conjugated systems as confirmed by the UV-vis and FTIR spectroscopic and X-ray diffraction analyses. Microscopic evaluation showed the successful manufacturing of exfoliated and separated few layers of nano-sheets of rGO. The application of the resultant rGO as an adsorbent for organic pollutants was investigated using methylene blue (MB) as a model. The adsorption kinetics of MB on rGO is best matched with the pseudo-second-ordered kinetic model and the Langmuir model with a high adsorption capacity of 132.2 mg/g. The rGO exhibited good reusability with a removal efficiency of 80.4% in the fourth cycle. This green method provides a new prospect for the large-scale production of rGO in a cost-effective and safe manner.
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Sadegh N, Haddadi H, Arabkhani P, Asfaram A, Sadegh F. Simultaneous elimination of Rhodamine B and Malachite Green dyes from the aqueous sample with magnetic reduced graphene oxide nanocomposite: Optimization using experimental design. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117710] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Aljar MAA, Rashdan S, Abd El-Fattah A. Environmentally Friendly Polyvinyl Alcohol-Alginate/Bentonite Semi-Interpenetrating Polymer Network Nanocomposite Hydrogel Beads as an Efficient Adsorbent for the Removal of Methylene Blue from Aqueous Solution. Polymers (Basel) 2021; 13:4000. [PMID: 34833299 PMCID: PMC8618515 DOI: 10.3390/polym13224000] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 11/30/2022] Open
Abstract
Hazardous chemicals like toxic organic dyes are very harmful to the environment and their removal is quite challenging. Therefore there is a necessity to develop techniques, which are environment friendly, cost-effective and easily available in nature for water purification and remediation. The present research work is focused on the development` and characterization of the ecofriendly semi-interpenetrating polymer network (semi-IPN) nanocomposite hydrogels composed of polyvinyl alcohol (PVA) and alginate (Alg) hydrogel beads incorporating natural bentonite (Bent) clay as a beneficial adsorbent for the removal of toxic methylene blue (MB) from aqueous solution. PVA-Alg/Bent nanocomposite hydrogel beads with different Bent content (0, 10, 20, and 30 wt%) were synthesized via external ionic gelation method. The designed porous and steady structure beads were characterized by the use of Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM). The performance of the beads as MB adsorbents was investigated by treating aqueous solutions in batch mode. The experimental results indicated that the incorporation of Bent (30 wt%) in the nanocomposite formulation sustained the porous structure, preserved water uptake, and increased MB removal efficiency by 230% compared to empty beads. Designed beads possessed higher affinity to MB at high pH 8, 30 °C, and fitted well to pseudo-second-order kinetic model with a high correlation coefficient. Moreover, the designed beads had good stability and reusability as they exhibited excellent removal efficiency (90%) after six consecutive adsorption-desorption cycles. The adsorption process was found be combination of both monolayer adsorption on homogeneous surface and multilayer adsorption on heterogeneous surface. The maximum adsorption capacity of the designed beads system as calculated by Langmuir isotherm was found to be 51.34 mg/g, which is in good agreement with the reported clay-related adsorbents. The designed semi-IPN PVA-Alg/Bent nanocomposite hydrogel beads demonstrated good adsorbent properties and could be potentially used for MB removal from polluted water.
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Affiliation(s)
- Mona A. Aziz Aljar
- Department of Chemistry, College of Science, University of Bahrain, Sakhir P.O. Box 32038, Bahrain; (M.A.A.A.); (S.R.)
| | - Suad Rashdan
- Department of Chemistry, College of Science, University of Bahrain, Sakhir P.O. Box 32038, Bahrain; (M.A.A.A.); (S.R.)
| | - Ahmed Abd El-Fattah
- Department of Chemistry, College of Science, University of Bahrain, Sakhir P.O. Box 32038, Bahrain; (M.A.A.A.); (S.R.)
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, Alexandria 21526, Egypt
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Sarwar Z, Tichonovas M, Krugly E, Masione G, Abromaitis V, Martuzevicius D. Graphene oxide loaded fibrous matrixes of polyether block amide (PEBA) elastomer as an adsorbent for removal of cationic dye from wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 298:113466. [PMID: 34371223 DOI: 10.1016/j.jenvman.2021.113466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/22/2021] [Accepted: 07/31/2021] [Indexed: 06/13/2023]
Abstract
Novel highly porous nanoparticle materials are increasingly being applied in adsorption processes, but they need to be supported by robust matrixes to maintain their functionality. We present a study of hosting graphene oxide (GO) particles on polyether block amide (PEBA) melt electrospun fibers and applying such composite matrix to the adsorption of the cationic dye (crystal violet) from water. Various amounts of GO (from 0.5 to 2.0%) were mixed into pure PEBA and electrospun by melt electrospinning obtaining micro fibrous matrixes. These were characterized for morphology (SEM), chemical composition (FTIR), crystallinity (XRD), and wetting behavior (WCA). The increasing amount of GO adversely affected fiber diameter (reduced from 13.18 to 4.38 μm), while the hydrophilic properties (Water contact angle decrease from 109 to 76°) and overall dye adsorption was increased. Efficient adsorption has been demonstrated, reaching approximately 100 % removal efficiency using a 2% GO composite matrix at a dose of 40 mg/l and pH of 10. Further increase of GO concentration in polymer is not feasible due to instability in the electrospinning process.
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Affiliation(s)
- Zahid Sarwar
- Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, Kaunas, Lithuania.
| | - Martynas Tichonovas
- Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, Kaunas, Lithuania
| | - Edvinas Krugly
- Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, Kaunas, Lithuania
| | - Goda Masione
- Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, Kaunas, Lithuania
| | - Vytautas Abromaitis
- Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, Kaunas, Lithuania
| | - Dainius Martuzevicius
- Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, Kaunas, Lithuania
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Statistical screening and optimization of photocatalytic degradation of methylene blue by ZnO–TiO2/rGO nanocomposite. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127464] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gupta K, Yasa SR, Khan A, Sharma OP, Khatri OP. Charge-driven interaction for adsorptive removal of organic dyes using ionic liquid-modified graphene oxide. J Colloid Interface Sci 2021; 607:1973-1985. [PMID: 34695746 DOI: 10.1016/j.jcis.2021.10.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/10/2021] [Accepted: 10/04/2021] [Indexed: 02/08/2023]
Abstract
A facile approach is presented to synthesize the ionic liquid-grafted graphene oxide (GO-ImOH) for fast and efficient adsorptive removal of cationic dyes. A coupling reaction between the hydroxyl terminal of imidazolium ionic liquid and the carboxylic group of GO, yielded the GO-ImOH hybrid material. The higher surface negative charge (-32 mV) and excellent dispersibility make the GO-ImOH an efficient adsorbent for cationic dyes. The GO-ImOH showed excellent removal efficiency for methylene blue (cationic dye), whereas it could adsorb only 22% methyl orange (anionic dye). The GO-ImOH displayed significantly higher adsorptive removal capacity for cationic dye compared to that of GO adsorbent. The chemical and structural features of GO-ImOH and spectroscopic analyses (FTIR and Raman) of pristine and recovered GO-ImOH adsorbent suggested multiple adsorptive interaction pathways (electrostatic, π-cation, π-π interactions, and hydrogen linkages) between the GO-ImOH adsorbent and the dye molecules. The work paves a new direction for the development of ionic liquids-modified 2D nanomaterials for efficient and fast adsorptive removal of organic pollutants, where the adsorptive sites on the surface of 2D nanomaterials can be tuned by selecting the desired functionalities from a diversified library of cations and anions of ionic liquids.
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Affiliation(s)
- Kanika Gupta
- CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | | | - Amzad Khan
- CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Om P Sharma
- CSIR-Indian Institute of Petroleum, Dehradun 248005, India
| | - Om P Khatri
- CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Academy of Scientific and Innovative Research, Ghaziabad 201002, India.
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Li D, Hua T, Yuan J, Xu F. Methylene blue adsorption from an aqueous solution by a magnetic graphene oxide/humic acid composite. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127171] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Al-Aoh HA, Darwish AAA. Enhancement of the adsorptive performance of TiO 2nanoparticles towards methylene blue by adding suspended nanoparticles of Pt: kinetics, isotherm, and thermodynamic studies. NANOTECHNOLOGY 2021; 32:415706. [PMID: 34233310 DOI: 10.1088/1361-6528/ac121f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Methylene blue (MB) is one of the most dangerous dyes found in numerous industries' wastewaters. Thus, the effect of suspended Pt nanoparticles (NPs) on the adsorption capability of TiO2NPs towards MB was investigated in this research. Factors affecting (adsorbate initial concentration, agitation time, solution pH, and temperature) the adsorption capacity of MB on the modified TiO2NPs were also studied. It was found that the first two factors have a positive effect, the temperature has an adverse impact, and the maximum uptake was observed when pH is 11. Isotherm parameters of Langmuir, Freundlich, and Timken models were determined. Langmuir's model was found to be the best one for analyzing the experimental data. The adsorption capacities obtained were 100.61, 90.66, and 80.26 mg g-1at 25 °C, 40 °C, and 55 °C, respectively. 1storder, 2ndorder, and intra-particle diffusion kinetic models were utilized to analyze experimental data. It found that these data were explained well by the 2ndorder model, indicating that this adsorption is chemisorption. Thermodynamic parameters were also determined, and the results obtained suggest that this adsorption is an exothermic and spontaneous process. The findings show that TiO2NPs modified by suspended Pt NPs will get a strong attraction in the treatment of fluids and wastewaters.
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Affiliation(s)
- Hatem A Al-Aoh
- Water Treatment Laboratory, Department of Chemistry, Faculty of Science, University of Tabuk, 71474 Tabuk, Saudi Arabia
| | - A A A Darwish
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
- Nanotechnology Research Unit, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department of Physics, Faculty of Education at Al-Mahweet, Sana'a University, Al-Mahweet, Yemen
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Tene T, Guevara M, Valarezo A, Salguero O, Arias Arias F, Arias M, Scarcello A, Caputi LS, Vacacela Gomez C. Drying-Time Study in Graphene Oxide. NANOMATERIALS 2021; 11:nano11041035. [PMID: 33921582 PMCID: PMC8072584 DOI: 10.3390/nano11041035] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 11/16/2022]
Abstract
Graphene oxide (GO) exhibits different properties from those found in free-standing graphene, which mainly depend on the type of defects induced by the preparation method and post-processing. Although defects in graphene oxide are widely studied, we report the effect of drying time in GO and how this modifies the presence or absence of edge-, basal-, and sp3-type defects. The effect of drying time is evaluated by Raman spectroscopy, UV-visible spectroscopy, and transmission electron microscopy (TEM). The traditional D, G, and 2D peaks are observed together with other less intense peaks called the D', D*, D**, D+G, and G+D. Remarkably, the D* peak is activated/deactivated as a direct consequence of drying time. Furthermore, the broad region of the 2D peak is discussed as a function of its deconvoluted 2D1A, 2D2A, and D+G bands. The main peak in UV-visible absorption spectra undergoes a redshift as drying time increases. Finally, TEM measurements demonstrate the stacking of exfoliated GO sheets as the intercalated (water) molecules are removed.
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Affiliation(s)
- Talia Tene
- Grupo de Fisicoquímica de Materiales, Universidad Técnica Particular de Loja, Loja EC-110160, Ecuador;
| | - Marco Guevara
- CompNano, School of Physical Sciences and Nanotechnology, Yachay Tech University, Urcuquí EC-100119, Ecuador;
| | - Andrea Valarezo
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, Italy; (A.V.); (O.S.); (M.A.); (A.S.); (L.S.C.)
| | - Orlando Salguero
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, Italy; (A.V.); (O.S.); (M.A.); (A.S.); (L.S.C.)
| | - Fabian Arias Arias
- Facultad de Ciencias, Escuela Superior Politécnica de Chimborazo, Riobamba EC-060155, Ecuador;
| | - Melvin Arias
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, Italy; (A.V.); (O.S.); (M.A.); (A.S.); (L.S.C.)
- Laboratorio de Nanotecnología, Area de Ciencias Básicas y Ambientales, Instituto Tecnológico de Santo Do-mingo, Av. Los Próceres, Santo Domingo 10602, Dominican Republic
| | - Andrea Scarcello
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, Italy; (A.V.); (O.S.); (M.A.); (A.S.); (L.S.C.)
- Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, Italy
- INFN, Sezione LNF, Gruppo Collegato di Cosenza, Via P. Bucci, I-87036 Rende, Italy
| | - Lorenzo S. Caputi
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, Italy; (A.V.); (O.S.); (M.A.); (A.S.); (L.S.C.)
- Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, Italy
| | - Cristian Vacacela Gomez
- CompNano, School of Physical Sciences and Nanotechnology, Yachay Tech University, Urcuquí EC-100119, Ecuador;
- UNICARIBE Research Center, University of Calabria, I-87036 Rende, Italy; (A.V.); (O.S.); (M.A.); (A.S.); (L.S.C.)
- Correspondence:
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Thomas G, Spitzer D. Double-side microcantilevers as a key to understand the adsorption mechanisms and kinetics of chemical warfare agents on vertically-aligned TiO 2 nanotubes. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124672. [PMID: 33310337 DOI: 10.1016/j.jhazmat.2020.124672] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/20/2020] [Accepted: 11/22/2020] [Indexed: 06/12/2023]
Abstract
Microgravimetric sensor platforms with physico- or chemo-selective interfaces offer promising sensing properties. They are widely used to detect chemical warfare agents (CWAs). However, a comprehensive insight into adsorption mechanisms and interactions between low concentrations of these adsorbates and low-mass adsorbents is still lacking. In this study, we report a complete and detailed analytical method to model the adsorption processes of low traces of vapor-phase DiMethyl MethylPhosphonate (DMMP), a conventional simulant of CWAs, on a double-side nanostructured microcantilever coated with vertically-aligned titanium dioxide nanotubes (TiO2-NTs). We find that the geometrical configuration of NTs plays an important role in the diffusion regimes of molecules during the adsorption. This study shines light on the adsorption and kinetic mechanisms of low-traces DMMP offering opportunities to have a better insight of the adsorption of CWAs on complex nanostructures and to improve microcantilever sensors.
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Affiliation(s)
- Guillaume Thomas
- Laboratoire Nanomatériaux pour les Systèmes Sous Sollicitations Extrêmes (NS3E), UMR 3208 ISL/CNRS/UNISTRA, French-German Research Institute of Saint-Louis, 5 rue du Général Cassagnou, 68300 Saint-Louis, France
| | - Denis Spitzer
- Laboratoire Nanomatériaux pour les Systèmes Sous Sollicitations Extrêmes (NS3E), UMR 3208 ISL/CNRS/UNISTRA, French-German Research Institute of Saint-Louis, 5 rue du Général Cassagnou, 68300 Saint-Louis, France.
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Jiang L, Wen Y, Zhu Z, Liu X, Shao W. A Double cross-linked strategy to construct graphene aerogels with highly efficient methylene blue adsorption performance. CHEMOSPHERE 2021; 265:129169. [PMID: 33310315 DOI: 10.1016/j.chemosphere.2020.129169] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/19/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
A novel lysine and EDA double cross-linked graphene aerogel (LEGA) was constructed. The prepared LEGA was utilized as a methylene blue (MB) adsorbent in the wastewater treatment. It exhibits a three-dimensional interconnected porous structure benefiting dye adsorption. Its compression property is highly enhanced with the addition of lysine. Adsorption isotherm and kinetics of MB onto LEGA were discussed. Their results show that MB adsorption onto LEGA was fitted to follow Langmuir adsorption isotherm model and the pseudo-second-order kinetic model. LEGA has an excellent adsorption capacity towards MB as high as 332.23 mg/g and its MB adsorption process is proved to be an exothermic process. The mechanism for MB adsorption onto LEGA was proposed as the ion exchange, electrostatic interaction, π-π stacking interaction and hydrogen bonding. Thus, LEGA is confirmed to be a sustainable and green MB adsorbent with highly removal efficiency in the treatment of wastewater.
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Affiliation(s)
- Lei Jiang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, PR China; College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, PR China
| | - Yanyi Wen
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, PR China
| | - Zhongjie Zhu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, PR China
| | - Xiufeng Liu
- State Key Laboratory of Natural Medicines, Department of Biotechnology of TCM, China Pharmaceutical University, Nanjing, 210009, PR China.
| | - Wei Shao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, PR China; College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, PR China.
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Venkatesan RA, Balachandran M. Novel carbon nano-onions from paraffinum liquidum for rapid and efficient removal of industrial dye from wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43845-43864. [PMID: 32737789 DOI: 10.1007/s11356-020-09981-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 07/01/2020] [Indexed: 05/28/2023]
Abstract
Carbon nano-onions (CNOs) are fascinating zero-dimensional carbon materials owning distinct multi-shell architecture. Their physicochemical properties are highly related to the parent material selected and the synthesis protocol involved. In the present work, we report for the first time novel CNO structures encompassing discrete carbon allotropes, namely, H18 carbon, Rh6 carbon, and n-diamond. These structures were cost-effectively synthesized in gram scale by facile flame pyrolysis of paraffinum liquidum, a highly refined mineral oil. The as-synthesized and chemically refashioned CNOs are quasi-spherical self-assembled mesopores, manifesting remarkable stability and hydrophilicity. The CNO structures exhibit excellent dye adsorption characteristics with high removal capacity of 1397.35 mg/g and rapid adsorption kinetics with a minimal adsorbent dosage of 10 mg/L, for a low concentration of 20 mg/L methylene blue dye. The novel CNOs assure potential implementation in the remediation of low concentration and high volume of dye-contaminated wastewater.Graphical abstract.
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Affiliation(s)
- Ramya Athiyanam Venkatesan
- Materials Science Research Laboratory, Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, 560029, India
| | - Manoj Balachandran
- Materials Science Research Laboratory, Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, 560029, India.
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Merlano AS, Hoyos LM, Gutiérrez GJ, Valenzuela MA, Salazar Á. Effect of Zn precursor concentration in the synthesis of rGO/ZnO composites and their photocatalytic activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj03683h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This work focuses on the synthesis of composite materials based on reduced graphene oxide reinforced with zinc oxide.
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Affiliation(s)
- Aura S. Merlano
- Grupo de Óptica y Espectroscopía (GOE)
- Centro de Ciencia Básica
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
| | - Lina M. Hoyos
- Grupo de Investigación en Biología de Sistemas
- Escuela de Ciencias de la Salud
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
| | - Guadalupe J. Gutiérrez
- Sección de Estudios de Posgrado e Investigación
- ESIME Azcapotzalco-Instituto Politécnico Nacional
- Santa Catarina
- Mexico
| | | | - Ángel Salazar
- Grupo de Óptica y Espectroscopía (GOE)
- Centro de Ciencia Básica
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
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