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Bahadi SA, Drmosh QA, Onaizi SA. Adsorptive removal of organic pollutants from aqueous solutions using novel GO/bentonite/MgFeAl-LTH nanocomposite. ENVIRONMENTAL RESEARCH 2024; 248:118218. [PMID: 38266892 DOI: 10.1016/j.envres.2024.118218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/05/2024] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
The contamination of water with organic pollutants such as dyes and phenols is a serious environmental problem, requiring effective treatment methods. In the present study, a novel nanocomposite was synthesized by intercalating graphene oxide and bentonite clay into MgFeAl-layered triple hydroxide (GO/BENT/LTH), which was characterized using different techniques. The adsorption efficacy of the GO/BENT/LTH nanocomposite was assessed via the removal of two harmful organic water pollutants, namely methyl orange (MO) and 2-nitrophenol (2NP). The obtained results revealed that the maximum adsorption capacities (qmax) of MO and 2NP reached 3106.3 and 2063.5 mg/g, respectively, demonstrating the excellent adsorption performance of the nanocomposite. Furthermore, this study examined the effects of contact time, initial MO and 2NP concentrations, pH, and temperature of the wastewater samples on the adsorptive removal of MO and 2NP by the GO/BENT/LTH nanocomposite. The pH, zeta potential, and FTIR investigations suggested the presence of more than one adsorption mechanism. Thermodynamic investigations elucidated the exothermic nature of the adsorption of MO and 2NP onto the GO/BENT/LTH nanocomposite, with MO adsorption being more sensitive to temperature change. Additionally, regeneration studies revealed a marginal loss in the MO and 2NP removal with the repetitive use of the GO/BENT/LTH nanocomposite, demonstrating its reusability. Overall, the findings of this study reveal the promise of the GO/BENT/LTH nanocomposite for effective water decontamination.
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Affiliation(s)
- Salem A Bahadi
- Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia
| | - Q A Drmosh
- Department of Materials Science and Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia
| | - Sagheer A Onaizi
- Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia; Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia.
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2
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Lyra KM, Tournis I, Subrati M, Spyrou K, Papavasiliou A, Athanasekou C, Papageorgiou S, Sakellis E, Karakassides MA, Sideratou Z. Carbon Nanodisks Decorated with Guanidinylated Hyperbranched Polyethyleneimine Derivatives as Efficient Antibacterial Agents. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:677. [PMID: 38668171 PMCID: PMC11054016 DOI: 10.3390/nano14080677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/29/2024]
Abstract
Non-toxic carbon-based hybrid nanomaterials based on carbon nanodisks were synthesized and assessed as novel antibacterial agents. Specifically, acid-treated carbon nanodisks (oxCNDs), as a safe alternative material to graphene oxide, interacted through covalent and non-covalent bonding with guanidinylated hyperbranched polyethyleneimine derivatives (GPEI5K and GPEI25K), affording the oxCNDs@GPEI5K and oxCNDs@GPEI25K hybrids. Their physico-chemical characterization confirmed the successful and homogenous attachment of GPEIs on the surface of oxCNDs, which, due to the presence of guanidinium groups, offered them improved aqueous stability. Moreover, the antibacterial activity of oxCNDs@GPEIs was evaluated against Gram-negative E. coli and Gram-positive S. aureus bacteria. It was found that both hybrids exhibited enhanced antibacterial activity, with oxCNDs@GPEI5K being more active than oxCNDs@GPEI25K. Their MIC and MBC values were found to be much lower than those of oxCNDs, revealing that the GPEI attachment endowed the hybrids with enhanced antibacterial properties. These improved properties were attributed to the polycationic character of the oxCNDs@GPEIs, which enables effective interaction with the bacterial cytoplasmic membrane and cell walls, leading to cell envelope damage, and eventually cell lysis. Finally, oxCNDs@GPEIs showed minimal cytotoxicity on mammalian cells, indicating that these hybrid nanomaterials have great potential to be used as safe and efficient antibacterial agents.
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Affiliation(s)
- Kyriaki-Marina Lyra
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
| | - Ioannis Tournis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
| | - Mohammed Subrati
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
| | - Konstantinos Spyrou
- Department of Material Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (K.S.); (M.A.K.)
| | - Aggeliki Papavasiliou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
| | - Chrysoula Athanasekou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
| | - Sergios Papageorgiou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
| | - Elias Sakellis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
- Physics Department, Condensed Matter Physics Section, National and Kapodistrian University of Athens, Panepistimiopolis, Zografos, 15784 Athens, Greece
| | - Michael A. Karakassides
- Department of Material Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (K.S.); (M.A.K.)
| | - Zili Sideratou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Reasearch “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece; (K.-M.L.); (I.T.); (M.S.); (A.P.); (C.A.); (S.P.); or (E.S.)
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Rissanou A, Konstantinou A, Karatasos K. Morphology and Dynamics in Hydrated Graphene Oxide/Branched Poly(ethyleneimine) Nanocomposites: An In Silico Investigation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1865. [PMID: 37368295 DOI: 10.3390/nano13121865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023]
Abstract
Graphene oxide (GO)-branched poly(ethyleneimine) (BPEI) hydrated mixtures were studied by means of fully atomistic molecular dynamics simulations to assess the effects of the size of polymers and the composition on the morphology of the complexes, the energetics of the systems and the dynamics of water and ions within composites. The presence of cationic polymers of both generations hindered the formation of stacked GO conformations, leading to a disordered porous structure. The smaller polymer was found to be more efficient at separating the GO flakes due to its more efficient packing. The variation in the relative content of the polymeric and the GO moieties provided indications for the existence of an optimal composition in which interaction between the two components was more favorable, implying more stable structures. The large number of hydrogen-bonding donors afforded by the branched molecules resulted in a preferential association with water and hindered its access to the surface of the GO flakes, particularly in polymer-rich systems. The mapping of water translational dynamics revealed the existence of populations with distinctly different mobilities, depending upon the state of their association. The average rate of water transport was found to depend sensitively on the mobility of the freely to move molecules, which was varied strongly with composition. The rate of ionic transport was found to be very limited below a threshold in terms of polymer content. Both, water diffusivity and ionic transport were enhanced in the systems with the larger branched polymers, particularly with a lower polymer content, due to the higher availability of free volume for the respective moieties. The detail afforded in the present work provides a new insight for the fabrication of BPEI/GO composites with a controlled microstructure, enhanced stability and adjustable water transport and ionic mobility.
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Affiliation(s)
- Anastassia Rissanou
- Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Apostolos Konstantinou
- Chemical Engineering Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Kostas Karatasos
- Chemical Engineering Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Bang KR, Kwon C, Lee H, Kim S, Cho ES. Horizontally Asymmetric Nanochannels of Graphene Oxide Membranes for Efficient Osmotic Energy Harvesting. ACS NANO 2023. [PMID: 37196224 DOI: 10.1021/acsnano.2c11975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Reverse electrodialysis (RED) directly harvests renewable energy from salinity gradients, and the achievable potential power heavily relies on the ion exchange membranes. Graphene oxides (GOs) are considered a solid candidate for the RED membrane because the laminated GO nanochannels with charged functional groups provide an excellent ionic selectivity and conductivity. Yet, a high internal resistance and poor stability in aqueous solutions limit the RED performance. Here, we develop a RED membrane that concurrently achieves high ion permeability and stable operation based on epoxy-confined GO nanochannels with asymmetric structures. The membrane is fabricated by reacting epoxy-wrapped GO membranes with ethylene diamine via vapor diffusion, overcoming the swelling properties in aqueous solutions. More importantly, the resultant membrane exhibits asymmetric GO nanochannels in terms of both channel geometry and electrostatic surface charges, leading to the rectified ion transport behavior. The demonstrated GO membrane exhibits the RED performance up to 5.32 W·m-2 with >40% energy conversion efficiency across a 50-fold salinity gradient and 20.3 W·m-2 across a 500-fold salinity gradient. Planck-Nernst continuum models coupled to molecular dynamics simulations rationalize the improved RED performance in terms of the asymmetric ionic concentration gradient within the GO nanochannel and the ionic resistance. The multiscale model also provides the design guidelines for ionic diode-type membranes configuring the optimum surface charge density and ionic diffusivity for efficient osmotic energy harvesting. The synthesized asymmetric nanochannels and their RED performance demonstrate the nanoscale tailoring of the membrane properties, establishing the potentials for 2D material-based asymmetric membranes.
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Affiliation(s)
- Ki Ryuk Bang
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Choah Kwon
- Department of Nuclear Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Ho Lee
- Department of Nuclear Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sangtae Kim
- Department of Nuclear Engineering, Hanyang University, Seoul 04763, Republic of Korea
- Department of Materials Science and Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Eun Seon Cho
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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Samuel AG, Subramanian S, Vijendran V, Bhagavathsingh J. Copper(II)-Bis-Cyclen Intercalated Graphene Oxide as an Efficient Two-Dimensional Nanocomposite Material for Copper-Catalyzed Azide–Alkyne Cycloaddition Reaction. Front Chem 2022; 9:754734. [PMID: 35071181 PMCID: PMC8782203 DOI: 10.3389/fchem.2021.754734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/06/2021] [Indexed: 11/18/2022] Open
Abstract
We report stable and heterogeneous graphene oxide (GO)–intercalated copper as an efficient catalyst for the organic transformations in green solvents. The GO-intercalated copper(II) complex of bis(1,4,7,10-tetraazacyclododecane) [Cu(II)-bis-cyclen] was prepared by a facile synthetic approach with a high dilution technique. The as-prepared GO-Cu(II)-bis-cyclen nanocomposite was used as a click catalyst for the 1,3 dipolar Huisgen cycloaddition reaction of terminal alkyne and azide substrates. On directing a great deal of attention toward the feasibility of the rapid electron transfer rate of the catalyst in proliferating the yield of 1,2,3-triazole products, the click catalyst GO-Cu(II)-bis-cyclen nanocomposite was designed and synthesized via non-covalent functionalization. The presence of a higher coordination site in an efficient 2D nanocomposite promotes the stabilization of Cu(I) L-acetylide intermediate during the catalytic cycle initiated by the addition of reductants. From the XRD analysis, the enhancement in the d-interlayer spacing of 1.04 nm was observed due to the intercalation of the Cu(II)-bis-cyclen complex in between the GO basal planes. It was also characterized by XPS, FT-IR, RAMAN, UV, SEM, AFM, and TGA techniques. The recyclability of the heterogeneous catalyst [GO-Cu(II)-cyclen] with the solvent effect has also been studied. This class of GO-Cu(II)-bis-cyclen nanocomposite paves the way for bioconjugation of macromolecules through the click chemistry approach.
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Liu K, Wang S, Duan L, Jiang L, Wang S. Effect of ionic liquids on catalytic characteristics of hyperthermophilic and halophilic phenylalanine dehydrogenase and mechanism study. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Samuel AG, Nagarajan K, Cidhuraj K, Gopal B, Chakravarty S, Selvaraj V, Lourdusamy E, Bhagavathsingh J. Copper(II) complex intercalated graphene oxide nanocomposites as versatile, reusable catalysts for click reaction. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Angel Green Samuel
- Department of Chemistry Karunya Institute of Technology and Sciences Coimbatore Tamilnadu India
| | - Karthikeyan Nagarajan
- Department of Chemistry Karunya Institute of Technology and Sciences Coimbatore Tamilnadu India
- Quality Control Lab GVK Biosciences Pvt. Ltd. Jigani Karnataka India
| | - Karthick Cidhuraj
- Department of Chemistry Karunya Institute of Technology and Sciences Coimbatore Tamilnadu India
| | - Bhalerao Gopal
- Material Characterization Division UGC‐DAE‐Consortium for Research, IGCAR‐Kalpakkam Node, Kalpakkam Chennai India
| | - Sujay Chakravarty
- Material Characterization Division UGC‐DAE‐Consortium for Research, IGCAR‐Kalpakkam Node, Kalpakkam Chennai India
| | | | - Emmanuvel Lourdusamy
- Department of Chemistry Karunya Institute of Technology and Sciences Coimbatore Tamilnadu India
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8
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Huang X, Zhang K, Luo B, Hu H, Sun D, Wang S, Hu Y, Lin T, Jia Z, Wang L. Polyethylenimine Expanded Graphite Oxide Enables High Sulfur Loading and Long-Term Stability of Lithium-Sulfur Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804578. [PMID: 30680923 DOI: 10.1002/smll.201804578] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/08/2018] [Indexed: 06/09/2023]
Abstract
To realize practical lithium-sulfur batteries (LSBs) with long cycling life, designing cathode hosts with a high specific surface area (SSA) is recognized as an efficient way to trap the soluble polysulfides. However, it is also blamed for diminishing the volumetric energy density and being susceptible to side reactions. Herein, polyethylenimine intercalated graphite oxide (PEI-GO) with a low SSA of 4.6 m2 g-1 and enlarged interlayer spacing of 13 Å is proposed as a superior sulfur host, which enables homogeneous distribution of high sulfur content (73%) and facilitates Li+ transfer in thick sulfur electrode. LSBs with a moderate sulfur loading (3.4 mg S cm-2 ) achieve an initial capacity of 1157 and 668 mAh g-1 after 500 cycles at 0.5 C. Even when the sulfur loading is increased to 7.3 mg cm-2 , the electrode still delivers a high areal capacity of 4.7 mAh cm-2 (641 mAh g-1 ) after 200 cycles at 0.2 C. The excellent electrochemical properties of PEI-GO are mainly attributed to the homogeneous distribution of sulfur in PEI-GO and the strong chemical interactions between polysulfides and amine groups, which can mitigate the loss of active phases and contribute to the better cycling stability.
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Affiliation(s)
- Xia Huang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Kai Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Bin Luo
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Han Hu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Dan Sun
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Yuxiang Hu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Tongen Lin
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Zhongfan Jia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
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Wu F, Zhao S, Li J, Lu Y, Su Y, Chen L, Bao L, Yao J, Liu X. Hand-in-Hand Reinforced rGO Film Used as an Auxiliary Functional Layer for High-Performance Li-S Batteries. ACS APPLIED MATERIALS & INTERFACES 2019; 11:12544-12553. [PMID: 30864779 DOI: 10.1021/acsami.9b00845] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
For lithium-sulfur (Li-S) batteries, a promising candidate for future high-energy storage devices, several prominent problems still need to be solved urgently, such as limited rate capability and poor cycle life caused by the insulating nature of sulfur and the shuttle of soluble polysulfides produced during battery operation. In this work, a facile vacuum filtration method is employed to graft polyethyleneimine to reduced graphene oxide (rGO) in a "hand-in-hand" way using the amino and catechol groups from polydopamine. The resulting polymer-reinforced rGO (PPG) film is applied as a free-standing auxiliary functional layer for Li-S batteries. It has been confirmed by both theoretical calculations and experimental methods that, benefiting from the rich amine groups and oxygen-containing functional groups, the as-prepared PPG composite film shows great ability to capture polysulfides. Moreover, its high conductivity enables itself to function as a polysulfide reservoir, thus facilitating the successive reutilization of the trapped active materials and improving sulfur utilization. For this reason, the PPG film can also be regarded as a cathode material, serving as a novel "SPPG cathode" together with the pure sulfur cathode. The cell assembled with the pure sulfur cathode and the PPG auxiliary functional layer displays high reversible capacity, excellent Coulombic efficiency, and good cycling stability, suggesting that the rational auxiliary functional layer design ensures a good match with pure sulfur cathodes and shows the potential to achieve energy-dense Li-S batteries.
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Affiliation(s)
- Feng Wu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
| | - Shuangyi Zhao
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
| | - Jian Li
- Aerospace Institute of Advanced Materials & Processing Technology , Beijing 100074 , China
| | - Yun Lu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
| | - Yuefeng Su
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
| | - Lai Chen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
| | - Liying Bao
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
| | - Jinyu Yao
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
| | - Xingxing Liu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China
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Athanasekou C, Sapalidis A, Katris I, Savopoulou E, Beltsios K, Tsoufis T, Kaltzoglou A, Falaras P, Bounos G, Antoniou M, Boutikos P, Romanos GE. Mixed Matrix PVDF/Graphene and Composite-Skin PVDF/Graphene Oxide Membranes Applied in Membrane Distillation. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24930] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- C. Athanasekou
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
| | - A. Sapalidis
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
| | - I. Katris
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
- Department of Materials Science and Engineering; University of Ioannina; 45110 Ioannina Greece
| | - E. Savopoulou
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
- Department of Materials Science and Engineering; University of Ioannina; 45110 Ioannina Greece
| | - K. Beltsios
- Department of Materials Science and Engineering; University of Ioannina; 45110 Ioannina Greece
| | - T. Tsoufis
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
| | - A. Kaltzoglou
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
| | - P. Falaras
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
| | - G. Bounos
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
| | - M. Antoniou
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
- Department of Materials Science and Engineering; University of Ioannina; 45110 Ioannina Greece
| | - P. Boutikos
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
| | - G. Em. Romanos
- Institute of Nanoscience and Nanotechnology; National Center for Scientific Research Demokritos; Agia Paraskevi, Athens 153 41 Greece
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11
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Yi L, Zhang Y, Shi X, Du X, Wang X, Yu A, Zhai G. Recent progress of functionalised graphene oxide in cancer therapy. J Drug Target 2018; 27:125-144. [DOI: 10.1080/1061186x.2018.1474359] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lingyun Yi
- Department of Pharmaceutics, College of Pharmacy, Shandong University, Jinan, China
| | - Yanan Zhang
- Department of Pharmaceutics, College of Pharmacy, Shandong University, Jinan, China
| | - Xiaoqun Shi
- Department of Pharmaceutics, College of Pharmacy, Shandong University, Jinan, China
| | - Xiyou Du
- Department of Pharmaceutics, College of Pharmacy, Shandong University, Jinan, China
| | - Xinyi Wang
- College of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Aihua Yu
- Department of Pharmaceutics, College of Pharmacy, Shandong University, Jinan, China
| | - Guangxi Zhai
- Department of Pharmaceutics, College of Pharmacy, Shandong University, Jinan, China
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12
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A Green Route to Copper Loaded Silica Nanoparticles Using Hyperbranched Poly(Ethylene Imine) as a Biomimetic Template: Application in Heterogeneous Catalysis. Catalysts 2017. [DOI: 10.3390/catal7120390] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Zhang K, Hu Y, Wang L, Monteiro MJ, Jia Z. Pyrene-Functionalized PTMA by NRC for Greater π-π Stacking with rGO and Enhanced Electrochemical Properties. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34900-34908. [PMID: 28956591 DOI: 10.1021/acsami.7b09604] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nitroxide radical polymers can undergo both excellent electrochemical redox reactions and a rapid "click" coupling reaction with carbon-centered radicals (i.e., nitroxide radical coupling (NRC) reaction). In this work, we report a strategy to functionalize poly(2,2,6,6,-tetramethylpiperidinyl-1-oxyl methacrylate) (PTMA) with pyrene side groups through a rapid and near quantitative NRC reaction. This resulted in P(TMA-co-PyMA) random copolymers with near quantitative amounts of pyrene along the PTMA chain for greater π-π interaction with rGO, while the nitroxide radicals on the polymer could simultaneously be used for energy storage. These copolymers can bind with reduced graphene oxide (rGO) and form layered composites through noncovalent π-π stacking, attaining molecular-level dispersion. Electrochemical performance of the composites with different polymer contents (24, 35, and 45 wt %), tested in lithium ion batteries, indicated that the layered structures consisting of P(TMA-co-PyMA) maintained greater capacities at high C-rates. This simple and efficient strategy to synthesize pyrene-functionalized polymers will provide new opportunities to fabricate many other polymer composite electrodes for desired electrochemical performance.
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Affiliation(s)
- Kai Zhang
- Australian Institute for Bioengineering and Nanotechnology and ‡School of Chemical Engineering, University of Queensland , Brisbane, Queensland 4072, Australia
| | - Yuxiang Hu
- Australian Institute for Bioengineering and Nanotechnology and ‡School of Chemical Engineering, University of Queensland , Brisbane, Queensland 4072, Australia
| | - Lianzhou Wang
- Australian Institute for Bioengineering and Nanotechnology and ‡School of Chemical Engineering, University of Queensland , Brisbane, Queensland 4072, Australia
| | - Michael J Monteiro
- Australian Institute for Bioengineering and Nanotechnology and ‡School of Chemical Engineering, University of Queensland , Brisbane, Queensland 4072, Australia
| | - Zhongfan Jia
- Australian Institute for Bioengineering and Nanotechnology and ‡School of Chemical Engineering, University of Queensland , Brisbane, Queensland 4072, Australia
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14
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Shen H, Wang N, Ma K, Wang L, Chen G, Ji S. Tuning inter-layer spacing of graphene oxide laminates with solvent green to enhance its nanofiltration performance. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.01.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Zhang Y, Han L, Hu LL, Chang YQ, He RH, Chen ML, Shu Y, Wang JH. Mesoporous carbon nanoparticles capped with polyacrylic acid as drug carrier for bi-trigger continuous drug release. J Mater Chem B 2016; 4:5178-5184. [PMID: 32263516 DOI: 10.1039/c6tb00987e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pH and redox responsive bi-trigger continuous drug release nanocarrier is developed by capping mesoporous carbon nanoparticles (MCNs) with polyacrylic acid (PAA), termed as PAA-ss-MCN. The nanocarrier contains disulfide bond units and exhibits pH responsive behavior. It provides promising potential for drug loading due to the internal uniform channels and large surface area of MCNs. PAA grafted on the exterior surface of MCNs acts as a gating layer, generating a novel nano-container and a pH-responsive intelligent nanovalve. By loading doxorubicin (DOX) in PAA-ss-MCN, its sequential release is achieved via two approaches: (1) the intracellular acidic environment induces partial release from the surface of the PAA gating layer, (2) release of the drug sealed in nanochannels via disruption of the integrity of the nanocarrier by glutathione (GSH) caused dissociation of disulfide bonds in the physiological environment. As a result, release of 62% loaded drug is readily achieved. After culturing with HeLa cells, DOX transports into the cell interior and therein exhibits pH- and GSH-sensitive release. As most tumor sites exhibit more acidic environments or high redox potential, the pH- and GSH-sensitive releasing capability of PAA-ss-MCN is particularly useful for controllable drug delivery by taking advantage of the inherent characteristics of tumor cells.
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Affiliation(s)
- Yang Zhang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China.
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16
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Kumar S, Raj S, Sarkar K, Chatterjee K. Engineering a multi-biofunctional composite using poly(ethylenimine) decorated graphene oxide for bone tissue regeneration. NANOSCALE 2016; 8:6820-36. [PMID: 26955801 DOI: 10.1039/c5nr06906h] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Toward preparing strong multi-biofunctional materials, poly(ethylenimine) (PEI) conjugated graphene oxide (GO_PEI) was synthesized using poly(acrylic acid) (PAA) as a spacer and incorporated in poly(ε-caprolactone) (PCL) at different fractions. GO_PEI significantly promoted the proliferation and formation of focal adhesions in human mesenchymal stem cells (hMSCs) on PCL. GO_PEI was highly potent in inducing stem cell osteogenesis leading to near doubling of alkaline phosphatase expression and mineralization over neat PCL with 5% filler content and was ≈50% better than GO. Remarkably, 5% GO_PEI was as potent as soluble osteoinductive factors. Increased adsorption of osteogenic factors due to the amine and oxygen containing functional groups on GO_PEI augment stem cell differentiation. GO_PEI was also highly efficient in imparting bactericidal activity with 85% reduction in counts of E. coli colonies compared to neat PCL at 5% filler content and was more than twice as efficient as GO. This may be attributed to the synergistic effect of the sharp edges of the particles along with the presence of the different chemical moieties. Thus, GO_PEI based polymer composites can be utilized to prepare bioactive resorbable biomaterials as an alternative to using labile biomolecules for fabricating orthopedic devices for fracture fixation and tissue engineering.
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Affiliation(s)
- Sachin Kumar
- Department of Materials Engineering, Bangalore 560012, India.
| | - Shammy Raj
- Department of Materials Engineering, Bangalore 560012, India.
| | - Kishor Sarkar
- Department of Chemical Engineering, Indian Institute of Science, Bangalore 560012, India
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17
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Romanos G, Pastrana-Martínez L, Tsoufis T, Athanasekou C, Galata E, Katsaros F, Favvas E, Beltsios K, Siranidi E, Falaras P, Psycharis V, Silva A. A facile approach for the development of fine-tuned self-standing graphene oxide membranes and their gas and vapor separation performance. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.07.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Gao Y, Chen X, Zhang J, Asakura H, Tanaka T, Teramura K, Ma D, Yan N. Popping of graphite oxide: application in preparing metal nanoparticle catalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:4688-4694. [PMID: 26179983 DOI: 10.1002/adma.201500644] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 06/09/2015] [Indexed: 06/04/2023]
Abstract
A popcorn-like transformation of graphite oxide (GO) is reported and used to synthesize metal nanoparticle catalysts. The popping step is unique and essential, not only generating a high-surface-area support but also partially decomposing the metal precursors to form well-separated metal oxide nuclei, which would further evolve into highly dispersed and uniform-sized nanoparticles in the subsequent reduction.
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Affiliation(s)
- Yongjun Gao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Xi Chen
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
| | - Jiaguang Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
| | - Hiroyuki Asakura
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Tsunehiro Tanaka
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto, 615-8520, Japan
| | - Kentaro Teramura
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto, 615-8520, Japan
| | - Ding Ma
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Ning Yan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
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19
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Novel acid-base hybrid membrane based on amine-functionalized reduced graphene oxide and sulfonated polyimide for vanadium redox flow battery. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.159] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Cai X, Ozawa TC, Funatsu A, Ma R, Ebina Y, Sasaki T. Tuning the surface charge of 2D oxide nanosheets and the bulk-scale production of superlatticelike composites. J Am Chem Soc 2015; 137:2844-7. [PMID: 25686203 DOI: 10.1021/jacs.5b00317] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The surface charge of various anionic unilamellar nanosheets, such as graphene oxide (GO), Ti0.87O2(0.52-), and Ca2Nb3O10(-) nanosheets, has been successfully modified to be positive by interaction with polycations while maintaining a monodispersed state. A dilute anionic nanosheet suspension was slowly added dropwise into an aqueous solution of high molecular weight polycations, which attach on the surface of the anionic nanosheets via electrostatic interaction. Surface modification and transformation to positively charged nanosheets were confirmed by various characterizations including atomic force microscopy and zeta potential measurements. Because the sizes of the polycations used are much larger than the nanosheets, the polymer chains may run off the nanosheet edges and fold to the fronts of the nanosheets, which could be a reason for the continued dispersion of the modified nanosheets in the suspension. By slowly adding a suspension of polycation-modified nanosheets and pristine anionic nanosheet dropwise into water under suitable conditions, a superlatticelike heteroassembly can be readily produced. Characterizations including transmission electron microscopy and X-ray diffraction measurements provide evidence for the formation of the alternately stacked structures. This approach enables the combination of various pairs of anionic nanosheets with different functionalities, providing a new opportunity for the creation of unique bulk-scale functional materials and their applications.
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Affiliation(s)
- Xingke Cai
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS) , Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
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21
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Gupta A, Shaw BK, Saha SK. Photoluminescence study of optically active diaminopyridine intercalated graphene oxide. RSC Adv 2014. [DOI: 10.1039/c4ra08748h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The optical property of a diaminopyridine intercalated GO composite with interlayer separation ∼1.03 nm was investigated by both experimental and theoretical approaches.
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Affiliation(s)
- Abhisek Gupta
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
| | - Bikash Kumar Shaw
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
| | - Shyamal Kumar Saha
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
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