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Rakhshan N, Mansournia M, Kashi FJ. A Magnetic Four Component Nanocomposite: Biosynthesis Using Melissa officinalis Leaves Extract, Application in High-Performance Naked-Eye Sensing of Mercury(II) and Efficient Catalytic Reduction of Para-nitrophenol. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02385-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Novikau R, Lujanienė G, Pakštas V, Talaikis M, Mažeika K, Drabavičius A, Naujokaitis A, Šemčuk S. Adsorption of caesium and cobalt ions on the muscovite mica clay-graphene oxide-γ-Fe 2O 3-Fe 3O 4 composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:74933-74950. [PMID: 35648351 DOI: 10.1007/s11356-022-21078-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The muscovite mica clay-graphene oxide-maghemite-magnetite (γ-Fe2O3-Fe3O4) composite was first used for the adsorption of caesium(I) and cobalt(II). The presence of clay minerals, graphene oxide, maghemite, and magnetite was detected in the prepared composite by XRD, WD-XRF, Mössbauer spectroscopy, and ATR-FTIR. The SEM and TEM results show that the composite has a layered structure with irregularly shaped pores on the surface. It was found that the adsorption of ions depends on the initial concentration, pH (except for caesium), mass of adsorbent, temperature, and contact time. The maximum adsorption capacity for Cs(I) and Co(II) was 2286 mg/g and 652 mg/g, respectively, and was obtained at concentrations (Cs(I) = 12,630 mg/L; Co(II) = 3200 mg/L), adsorbent mass of 0.01 g, pH (Cs(I) = 7; Co(II) = 5), temperature of 20 ± 1 °C, and contact time of 24 h. The high adsorption capacity of the composite could be due to a diversity of functional groups, a large number of active sites or the multilayer adsorption of caesium and cobalt ions on the surface of the composite. The Freundlich, Langmuir isotherms, and the pseudo-second-order kinetic model better describe the adsorption of these ions on the composite. The adsorption was non-spontaneous endothermic for Cs(I) and spontaneous endothermic for Co(II). The proposed mechanism of adsorption of Cs and Co ions on the composite is complex and involves electrostatic interactions and ion exchange. The ANFIS model proved to be quite effective in predicting the adsorption of Cs(I) and Co(II), as shown by the obtained values of R2, MSE, SSE, and ARE.
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Affiliation(s)
- Raman Novikau
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania.
| | - Galina Lujanienė
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
| | - Vidas Pakštas
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Martynas Talaikis
- Department of Organic Chemistry, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Kęstutis Mažeika
- Department of Nuclear Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
| | - Audrius Drabavičius
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Arnas Naujokaitis
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Sergej Šemčuk
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
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Insight into Structural Features of Magnetic Kaolinite Nanocomposite and Its Potential for Methylene Blue Dye Removal from Aqueous Solution. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2022. [DOI: 10.9767/bcrec.17.1.12733.205-215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An in-depth understanding on the structural features of engineered magnetic adsorbent is important for forecasting its efficiencies for environmental clean-up studies. A magnetic kaolinite nanocomposite (MKN) was prepared using Malaysia’s natural kaolinite via co-precipitation method with a three different clay: iron oxide mass ratio (MKN 1:1, MKN 2:1 and MKN 5:1). The morphology and structural features of the magnetic composites were systematically investigated using techniques, such as: Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), surface area analysis (BET), Vibrating Sample Magnetometer (VSM), and zeta potential measurement. The removal efficiencies of the adsorbent for Methylene Blue (MB) dye were studied in batch method as a function of pH and initial concentration. MKN1:1 demonstrated the highest magnetisation susceptibility (Ms) of 35.9 emu/g with four-fold-increase in specific surface area as compared to the pristine kaolinite. Preliminary experiment reveals that all MKNs showed almost 100% removal of MB at low initial concentration (<50 ppm). The spent MKN adsorbent demonstrated an easy recovery via external magnetic field separation and recorded maximum adsorption capacity of 18.1 mg/g. This research gives an insight on the surface characteristics of magnetic clay composite for potential application as an effective and low-cost adsorbent in treating dye contaminated water. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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Li N, Fang J, Jiang P, Li C, Kang H, Wang W. Adsorption Properties and Mechanism of Attapulgite to Graphene Oxide in Aqueous Solution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:2793. [PMID: 35270485 PMCID: PMC8910037 DOI: 10.3390/ijerph19052793] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 02/04/2023]
Abstract
In order to remove toxic graphene oxide (GO) from aqueous solution, attapulgite (ATP) was used as adsorbent to recycle it by adsorption. In this paper, the effects of different pH, adsorbent mass, GO concentration, time and temperature on the adsorption of GO by attapulgite were studied, and the adsorption performance and mechanism were further explored by XRD, AFM, XPS, FTIR, TEM and SEM tests. The results show that when T = 303 K, pH = 3, and the GO concentration is 100 mg/L in 50 mL of aqueous solution, the removal rate of GO by 40 mg of attapulgite reaches 92.83%, and the partition coefficient Kd reaches 16.31. The adsorption kinetics results showed that the adsorption equilibrium was reached at 2160 min, and the adsorption process could be described by the pseudo-second-order adsorption equation, indicating that the adsorption process was accompanied by chemical adsorption and physical adsorption. The isotherm and thermodynamic parameters show that the adsorption of GO by attapulgite is more consistent with the Langmuir isotherm model, and the reaction is a spontaneous endothermic process. The analysis shows that attapulgite is a good material for removing GO, which can provide a reference for the removal of GO in an aqueous environment.
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Affiliation(s)
- Na Li
- School of Civil Engineering, Shaoxing University, Shaoxing 312000, China; (N.L.); (J.F.); (P.J.); (C.L.)
| | - Jiyuan Fang
- School of Civil Engineering, Shaoxing University, Shaoxing 312000, China; (N.L.); (J.F.); (P.J.); (C.L.)
| | - Ping Jiang
- School of Civil Engineering, Shaoxing University, Shaoxing 312000, China; (N.L.); (J.F.); (P.J.); (C.L.)
| | - Cuihong Li
- School of Civil Engineering, Shaoxing University, Shaoxing 312000, China; (N.L.); (J.F.); (P.J.); (C.L.)
| | - Haibo Kang
- School of Civil Engineering, College of Transportation Engineering, Nanjing Tech University, Nanjing 210009, China;
| | - Wei Wang
- School of Civil Engineering, Shaoxing University, Shaoxing 312000, China; (N.L.); (J.F.); (P.J.); (C.L.)
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576, Singapore
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Plant Extract-Strategy Using Teucrium Polium Stems to Green Synthesize Ag/AgCl Bionanocomposite Imprinted on Fe3O4/kaolinite and Potentials in Catalytic and Chemosensor Applications. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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Improved adenylate cyclase activity via affinity immobilization onto co-modified GO with bio-inspired adhesive and PEI. Colloids Surf B Biointerfaces 2021; 205:111888. [PMID: 34091372 DOI: 10.1016/j.colsurfb.2021.111888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 11/23/2022]
Abstract
Adenylate cyclase (AC) can efficiently catalyze the conversion of adenosine triphosphate (ATP) to cyclic adenosine-3', 5'-monophosphate (cAMP). However, AC directly immobilized on substrate is not desirable due to enzyme inactivation. Herein, bio-inspired adhesive of polydopamine and polyethyleneimine (PDA/PEI) was used as flexible chains to graft on graphene oxide (GO), and the AC was directionally immobilized through affinity between metal ions and his-tags of AC. The properties of modified GO and the activity of immobilized AC were studied in detail. PDA/PEI layers have been proved to improve the amino density of GO surface for affinity groups decoration and adjust the interaction between AC and support. And modified GO by this novel method contributes to subsequent grafting and immobilization of AC by affinity. AC immobilized on modified GO exhibited high activity recovery with about 90 % of free AC, while enzyme immobilized on unmodified GO has been inactivated. This study offers a versatile approach for support modification and enzyme oriented immobilization. PDA/PEI functionalized GO can be used as a promising carrier to immobilize other his-tagged enzymes.
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Amini K, Soleimani Amiri S, Ghasemi A, Mirvalad S, Habibnejad Korayem A. Evaluation of the dispersion of metakaolin-graphene oxide hybrid in water and cement pore solution: can metakaolin really improve the dispersion of graphene oxide in the calcium-rich environment of hydrating cement matrix? RSC Adv 2021; 11:18623-18636. [PMID: 35480938 PMCID: PMC9033477 DOI: 10.1039/d1ra01504d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/16/2021] [Indexed: 11/25/2022] Open
Abstract
Graphene oxide (GO) is a promising candidate for reinforcing cement composites due to its prominent mechanical properties and good dispersibility in water. However, the severe agglomeration of GO nanosheets in the Ca2+ ion loaded environment of a freshly mixed cement composite is the main obstacle against the mentioned goal. Recent studies, based on the SEM images, have shown that the incorporation of pozzolans can ameliorate the GO agglomeration in cement matrix. Considering the fact that, for identifying the GO dispersion in cement matrix, SEM characterization is not preferred due to the hydrated cement matrix complexity and presence of small dosages of GO, this research has investigated the potential of Metakaolin (MK) as a highly reactive pozzolan against GO agglomeration in the non-hydrated environment of simulated cement pore solution (SCPS) for different MK/GO weight ratios. Additionally, the interaction between MK and GO in water is evaluated through different characterization methods. Visual investigation and UV-vis spectroscopy revealed that there should be a probable interaction between MK particles and GO nanosheets in water which was interpreted by Lewis acid-base interaction and further examined by FTIR spectroscopy. Moreover, the zeta potential measurements indicated that the increase in MK/GO weight ratio could lead to higher adsorption of GO on the surface of MK particles which was confirmed by the particle size analysis. Almost all of the conducted experiments on the MK-GO hybrid in simulated cement pore solution showed that different dosages of MK particles were incapable of preventing GO agglomeration; thus, despite the proposed mechanisms in previous studies, MK cannot effectively restrict the unfavorable effects of Ca2+ ions on GO dispersion in SCPS and analogously in the hydrating cement matrix.
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Affiliation(s)
- Kasra Amini
- School of Civil Engineering, Iran University of Science and Technology Tehran Iran
| | | | - Ali Ghasemi
- School of Civil Engineering, Iran University of Science and Technology Tehran Iran
| | - Sajjad Mirvalad
- School of Civil Engineering, Iran University of Science and Technology Tehran Iran
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Chang YS, Au PI, Mubarak NM, Khalid M, Jagadish P, Walvekar R, Abdullah EC. Adsorption of Cu(II) and Ni(II) ions from wastewater onto bentonite and bentonite/GO composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:33270-33296. [PMID: 32529626 DOI: 10.1007/s11356-020-09423-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
Two superior adsorbents, namely bentonite and graphene oxide (GO), were hybridised to study the removal of copper and nickel ions from synthetic and industrial wastewater. The as-synthesised GO, bentonite/GO and bentonite were characterised by Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and N2 adsorption-desorption analysis. The factors influencing the adsorption behaviours including contact time, initial solution pH, ionic strength, initial concentration of metal ions, temperature and adsorbent dosage were systematically investigated by batch equilibrium method. The adsorption equilibrium for copper and nickel onto bentonite was attained in 90 min while equilibrium was reached in 60 min on bentonite/GO. The adsorption of copper and nickel was pH-dependent in the range from pH 2 to pH 7 and from pH 2 to pH 8. Pseudo-first-order kinetic model excellently described the adsorption of copper and nickel onto bentonite and bentonite/GO. The equilibrium adsorption data was well described by the Langmuir isotherm model and the maximum adsorption capacity was 248.9 mg/g, 558.4 mg/g, 215.8 mg/g and 402.5 mg/g for bentonite-copper, bentonite/GO-copper, bentonite-nickel and bentonite/GO-nickel adsorption systems, respectively. The bentonite/GO composite exhibited a higher adsorption capacity of both cations from synthetic wastewater than pure bentonite owning to the synergistic effect between bentonite and GO. In all adsorption studies, copper was more efficiently removed than nickel due to its higher tendency to form bond with adsorbent surfaces. The adsorption of copper and nickel on bentonite/GO was mainly due to cation exchange, intermolecular and electrostatic interactions and physisorption dominated the adsorption processes. The practical application of bentonite/GO on adsorption of copper was investigated using real wastewater and its removal efficiency was beyond 98%. The excellent adsorption performances of composites for the copper and nickel removal from wastewater demonstrated its significant potential for pollution mitigations.
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Affiliation(s)
- Yii Shiuan Chang
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Pek Ing Au
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Nabisab Mujawar Mubarak
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - Mohammad Khalid
- Graphene & Advanced 2D Materials Research Group (GAMRG), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500, Subang Jaya, Selangor, Malaysia
| | - Priyanka Jagadish
- Graphene & Advanced 2D Materials Research Group (GAMRG), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500, Subang Jaya, Selangor, Malaysia
| | - Rashmi Walvekar
- Department of Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900, Sepang, Selangor, Malaysia
| | - Ezzat Chan Abdullah
- Department of Chemical Process Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM), Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
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Modrogan C, Pandele AM, Bobirică C, Dobrotǎ D, Dăncilă AM, Gârleanu G, Orbuleţ OD, Borda C, Gârleanu D, Orbeci C. Synthesis, Characterization and Sorption Capacity Examination for a Novel Hydrogel Composite Based on Gellan Gum and Graphene Oxide (GG/GO). Polymers (Basel) 2020; 12:polym12051182. [PMID: 32455787 PMCID: PMC7285009 DOI: 10.3390/polym12051182] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 01/08/2023] Open
Abstract
A novel hydrogel composite based on gellan gum and graphene oxide (GG/GO) was synthesized, characterized and tested for sorption capacity in this work. The microstructural, thermogravimetric and spectroscopic analysis confirmed the formation of the GG/GO composite. Comparative batch sorption experiments revealed a sorption capacity of the GG/GO composite for Zn (II) ions of approximately 2.3 higher than that of pure GG. The GG/GO composite exhibits a maximum sorption capacity of 272.57 mg/g at a pH of Zn (II) initial solution of 6. Generally, the sorption capacity of the sorbents is approximately 1.5 higher in slightly acidic conditions (pH 6) comparative with that for strong acidic conditions (pH 3). The sorption isotherms revealed that the sorption followed a monolayer/homogenous behavior. The sorption kinetic data were well fitted by the pseudo-second-order kinetic model, and were consistent with those derived from sorption isotherms. The intraparticle diffusion was considered to be the rate-determining step. Two main sorption mechanisms for Zn (II) were identified namely, ion exchange at low pH values, and both ion exchange and chemisorption in weekly acidic conditions.
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Affiliation(s)
- Cristina Modrogan
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, Polizu 1-7, 060042 Bucharest, Romania; (C.M.); (A.M.P.); (A.M.D.); (O.D.O.); (C.O.)
| | - Andreea Mădălina Pandele
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, Polizu 1-7, 060042 Bucharest, Romania; (C.M.); (A.M.P.); (A.M.D.); (O.D.O.); (C.O.)
| | - Constantin Bobirică
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, Polizu 1-7, 060042 Bucharest, Romania; (C.M.); (A.M.P.); (A.M.D.); (O.D.O.); (C.O.)
- Correspondence: (C.B.); (D.D.); Tel.: +40-214-023-820 (C.B.); +40-0722-446-082 (D.D.)
| | - Dan Dobrotǎ
- Faculty of Engineering, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania
- Correspondence: (C.B.); (D.D.); Tel.: +40-214-023-820 (C.B.); +40-0722-446-082 (D.D.)
| | - Annette Madelene Dăncilă
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, Polizu 1-7, 060042 Bucharest, Romania; (C.M.); (A.M.P.); (A.M.D.); (O.D.O.); (C.O.)
| | - Gabriel Gârleanu
- Faculty of Industrial Engineering and Robotics, Politehnica University of Bucharest, 060042 Bucharest, Romania; (G.G.); (C.B.); (D.G.)
| | - Oanamari Daniela Orbuleţ
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, Polizu 1-7, 060042 Bucharest, Romania; (C.M.); (A.M.P.); (A.M.D.); (O.D.O.); (C.O.)
| | - Claudia Borda
- Faculty of Industrial Engineering and Robotics, Politehnica University of Bucharest, 060042 Bucharest, Romania; (G.G.); (C.B.); (D.G.)
| | - Delia Gârleanu
- Faculty of Industrial Engineering and Robotics, Politehnica University of Bucharest, 060042 Bucharest, Romania; (G.G.); (C.B.); (D.G.)
| | - Cristina Orbeci
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, Polizu 1-7, 060042 Bucharest, Romania; (C.M.); (A.M.P.); (A.M.D.); (O.D.O.); (C.O.)
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