1
|
Jiang S, Huang L, Chen H, Zhao J, Ly TH. Unraveling the Atomistic Mechanisms Underlying Effective Reverse Osmosis Filtration by Graphene Oxide Membranes. SMALL METHODS 2024:e2400323. [PMID: 38940224 DOI: 10.1002/smtd.202400323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 06/12/2024] [Indexed: 06/29/2024]
Abstract
The graphene oxide (GO) membrane displays promising potential in efficiently filtering ions from water. However, the precise mechanism behind its effectiveness remains elusive, particularly due to the lack of direct experimental evidence at the atomic scale. To shed light on this matter, state-of-the-art techniques are employed such as integrated differential phase contrast-scanning transmission electron microscopy and electron energy loss spectroscopy, combined with reverse osmosis (RO) filtration experiments using GO membranes. The atomic-scale observations after the RO experiments directly reveal the binding of various ions including Na+, K+, Ca2+, and Fe3+ to the defects, edges, and functional groups of GO. The remarkable ion-sieving capabilities of GO membranes are confirmed, which can be attributed to a synergistic interplay of size exclusion, electrostatic interactions, cation-π, and other non-covalent interactions. Moreover, GO membranes modified by external pressure and cation also demonstrated further enhanced filtration performance for filtration. This study significantly contributes by uncovering the atomic-scale mechanism responsible for ion sieving in GO membranes. These findings not only enhance the fundamental understanding but also hold substantial potential for the advancement of GO membranes in reverse osmosis (RO) filtration.
Collapse
Affiliation(s)
- Shan Jiang
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518000, China
- Department of Chemistry and Center of Super-Diamond & Advanced Films, City University of Hong Kong, Kowloon, Hong Kong, P. R. China
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518000, China
| | - Lingli Huang
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518000, China
- Department of Chemistry and Center of Super-Diamond & Advanced Films, City University of Hong Kong, Kowloon, Hong Kong, P. R. China
| | - Honglin Chen
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518000, China
| | - Jiong Zhao
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518000, China
| | - Thuc Hue Ly
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518000, China
- Department of Chemistry and Center of Super-Diamond & Advanced Films, City University of Hong Kong, Kowloon, Hong Kong, P. R. China
- Department of Chemistry and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
| |
Collapse
|
2
|
Rabiee N, Ahmadi S, Rahimizadeh K, Chen S, Veedu RN. Metallic nanostructure-based aptasensors for robust detection of proteins. NANOSCALE ADVANCES 2024; 6:747-776. [PMID: 38298588 PMCID: PMC10825927 DOI: 10.1039/d3na00765k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/29/2023] [Indexed: 02/02/2024]
Abstract
There is a significant need for fast, cost-effective, and highly sensitive protein target detection, particularly in the fields of food, environmental monitoring, and healthcare. The integration of high-affinity aptamers with metal-based nanomaterials has played a crucial role in advancing the development of innovative aptasensors tailored for the precise detection of specific proteins. Aptamers offer several advantages over commonly used molecular recognition methods, such as antibodies. Recently, a variety of metal-based aptasensors have been established. These metallic nanomaterials encompass noble metal nanoparticles, metal oxides, metal-carbon nanotubes, carbon quantum dots, graphene-conjugated metallic nanostructures, as well as their nanocomposites, metal-organic frameworks (MOFs), and MXenes. In general, these materials provide enhanced sensitivity through signal amplification and transduction mechanisms. This review primarily focuses on the advancement of aptasensors based on metallic materials for the highly sensitive detection of protein targets, including enzymes and growth factors. Additionally, it sheds light on the challenges encountered in this field and outlines future prospects. We firmly believe that this review will offer a comprehensive overview and fresh insights into metallic nanomaterials-based aptasensors and their capabilities, paving the way for the development of innovative point-of-care (POC) diagnostic devices.
Collapse
Affiliation(s)
- Navid Rabiee
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Sepideh Ahmadi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Kamal Rahimizadeh
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Suxiang Chen
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Rakesh N Veedu
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| |
Collapse
|
3
|
Flauzino JMR, Nalepa MA, Chronopoulos DD, Šedajová V, Panáček D, Jakubec P, Kührová P, Pykal M, Banáš P, Panáček A, Bakandritsos A, Otyepka M. Click and Detect: Versatile Ampicillin Aptasensor Enabled by Click Chemistry on a Graphene-Alkyne Derivative. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207216. [PMID: 36703534 DOI: 10.1002/smll.202207216] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/20/2022] [Indexed: 06/18/2023]
Abstract
Tackling the current problem of antimicrobial resistance (AMR) requires fast, inexpensive, and effective methods for controlling and detecting antibiotics in diverse samples at the point of interest. Cost-effective, disposable, point-of-care electrochemical biosensors are a particularly attractive option. However, there is a need for conductive and versatile carbon-based materials and inks that enable effective bioconjugation under mild conditions for the development of robust, sensitive, and selective devices. This work describes a simple and fast methodology to construct an aptasensor based on a novel graphene derivative equipped with alkyne groups prepared via fluorographene chemistry. Using click chemistry, an aptamer is immobilized and used as a successful platform for the selective determination of ampicillin in real samples in the presence of interfering molecules. The electrochemical aptasensor displayed a detection limit of 1.36 nM, high selectivity among other antibiotics, the storage stability of 4 weeks, and is effective in real samples. Additionally, structural and docking simulations of the aptamer shed light on the ampicillin binding mechanism. The versatility of this platform opens up wide possibilities for constructing a new class of aptasensor based on disposable screen-printed carbon electrodes usable in point-of-care devices.
Collapse
Affiliation(s)
- José M R Flauzino
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Martin-Alex Nalepa
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Demetrios D Chronopoulos
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Veronika Šedajová
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - David Panáček
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Petr Jakubec
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Petra Kührová
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Martin Pykal
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Pavel Banáš
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Aleš Panáček
- Department of Physical Chemistry, Faculty of Science, Palacký University, Olomouc, 771 46, Czech Republic
| | - Aristides Bakandritsos
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
- Nanotechnology Centre, Centre of Energy and Environmental Technologies, VSB - Technical University of Ostrava, 17. listopadu 2172/15, 708 00, Ostrava-Poruba, Czech Republic
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
- IT4Innovations, VSB - Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba, 708 00, Czech Republic
| |
Collapse
|
4
|
Zhang Y, Yu W, Wang J, Zhan T, Kamran MA, Wang K, Zhu X, Chu C, Zhu X, Chen B. Long-Term Exposure of Graphene Oxide Suspension to Air Leading to Spontaneous Radical-Driven Degradation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:14407-14416. [PMID: 37695219 DOI: 10.1021/acs.est.3c05788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Understanding the environmental transformation and fate of graphene oxide (GO) is critical to estimate its engineering applications and ecological risks. While there have been numerous investigations on the physicochemical stability of GO in prolonged air-exposed solution, the potential generation of reactive radicals and their impact on the structure of GO remain unexplored. In this study, using liquid-PeakForce-mode atomic force microscopy and quadrupole time-of-flight mass spectroscopy, we report that prolonged exposure of GO to the solution leads to the generation of nanopores in the 2D network and may even cause the disintegration of its bulk structure into fragment molecules. These fragments can assemble themselves into films with the same height as the GO at the interface. Further mediated electrochemical analysis supports that the electron-donating active components of GO facilitate the conversion of O2 to •O2- radicals on the GO surface, which are subsequently converted to H2O2, ultimately leading to the formation of •OH. We experimentally confirmed that attacks from •OH radicals can break down the C-C bond network of GO, resulting in the degradation of GO into small fragment molecules. Our findings suggest that GO can exhibit chemical instability when released into aqueous solutions for prolonged periods of time, undergoing transformation into fragment molecules through self-generated •OH radicals. This finding not only sheds light on the distinctive fate of GO-based nanomaterials but also offers a guideline for their engineering applications as advanced materials.
Collapse
Affiliation(s)
- Yuyao Zhang
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
- Department of Chemical & Environmental Engineering, School of Engineering and Applied Science, Yale University, New Haven, Connecticut 06511, United States
| | - Wentao Yu
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Jian Wang
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Tingjie Zhan
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, New Jersey 08854, United States
| | - Muhammad Aqeel Kamran
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Kun Wang
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Xiangyu Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Chiheng Chu
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Xiaoying Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| |
Collapse
|
5
|
Piñeiro-García A, Semetey V. The "How" and "Where" Behind the Functionalization of Graphene Oxide by Thiol-ene "Click" Chemistry. Chemistry 2023; 29:e202301604. [PMID: 37367388 DOI: 10.1002/chem.202301604] [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: 05/20/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 06/28/2023]
Abstract
Graphene oxide (GO) is a 2D nanomaterial with unique chemistry due to the combination of sp2 hybridization and oxygen functional groups (OFGs) even in single layer. OFGs play a fundamental role in the chemical functionalization of GO to produce GO-based materials for diverse applications. However, traditional strategies that employ epoxides, alcohols, and carboxylic acids suffer from low control and undesirable side reactions, including by-product formation and GO reduction. Thiol-ene "click" reaction offers a promising and versatile chemical approach for the alkene functionalization (-C=C-) of GO, providing orthogonality, stereoselectivity, regioselectivity, and high yields while reducing by-products. This review examines the chemical functionalization of GO via thiol-ene "click" reactions, providing insights into the underlying reaction mechanisms, including the role of radical or base catalysts in triggering the reaction. We discuss the "how" and "where" the reaction takes place on GO, the strategies to avoid unwanted side reactions, such as GO reduction and by-product formation. We anticipate that multi-functionalization of GO via the alkene groups will enhance GO physicochemical properties while preserving its intrinsic chemistry.
Collapse
Affiliation(s)
| | - Vincent Semetey
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 11 Rue Pierre et Marie Curie, 75005, Paris, France
| |
Collapse
|
6
|
McMahon CJ, Martinez B, Henry CS. Characterization of Factors Affecting Stripping Voltammetry on Thermoplastic Electrodes. JOURNAL OF THE ELECTROCHEMICAL SOCIETY 2023; 170:096507. [PMID: 37807977 PMCID: PMC10552556 DOI: 10.1149/1945-7111/acfa68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Thermoplastic carbon electrodes (TPEs) are an alternative form of carbon composite electrodes that have shown excellent electrochemical performance with applications in biological sensing. However, little has been done to apply TPEs to environmental sensing, specifically heavy metal analysis. The work here focuses on lead analysis and based on their electrochemical properties, TPEs are expected to outperform other carbon composite materials; however, despite testing multiple formulations, TPEs showed inferior performance. Detailed electrode characterization was conducted to examine the cause for poor lead sensing behavior. X-Ray photoelectron spectroscopy (XPS) was used to analyze the surface functional groups, indicating that acidic and alkaline functional groups impact lead electrodeposition. Further, scanning electron microscopy (SEM) and electrochemical characterization demonstrated that both the binder and graphite can influence the surface morphology, electroactive area, and electron kinetics.
Collapse
Affiliation(s)
| | | | - Charles S Henry
- Colorado State University, Fort Collins, Colorado 80523, USA
| |
Collapse
|
7
|
Jayaramulu K, Mukherjee S, Morales DM, Dubal DP, Nanjundan AK, Schneemann A, Masa J, Kment S, Schuhmann W, Otyepka M, Zbořil R, Fischer RA. Graphene-Based Metal-Organic Framework Hybrids for Applications in Catalysis, Environmental, and Energy Technologies. Chem Rev 2022; 122:17241-17338. [PMID: 36318747 PMCID: PMC9801388 DOI: 10.1021/acs.chemrev.2c00270] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Indexed: 11/06/2022]
Abstract
Current energy and environmental challenges demand the development and design of multifunctional porous materials with tunable properties for catalysis, water purification, and energy conversion and storage. Because of their amenability to de novo reticular chemistry, metal-organic frameworks (MOFs) have become key materials in this area. However, their usefulness is often limited by low chemical stability, conductivity and inappropriate pore sizes. Conductive two-dimensional (2D) materials with robust structural skeletons and/or functionalized surfaces can form stabilizing interactions with MOF components, enabling the fabrication of MOF nanocomposites with tunable pore characteristics. Graphene and its functional derivatives are the largest class of 2D materials and possess remarkable compositional versatility, structural diversity, and controllable surface chemistry. Here, we critically review current knowledge concerning the growth, structure, and properties of graphene derivatives, MOFs, and their graphene@MOF composites as well as the associated structure-property-performance relationships. Synthetic strategies for preparing graphene@MOF composites and tuning their properties are also comprehensively reviewed together with their applications in gas storage/separation, water purification, catalysis (organo-, electro-, and photocatalysis), and electrochemical energy storage and conversion. Current challenges in the development of graphene@MOF hybrids and their practical applications are addressed, revealing areas for future investigation. We hope that this review will inspire further exploration of new graphene@MOF hybrids for energy, electronic, biomedical, and photocatalysis applications as well as studies on previously unreported properties of known hybrids to reveal potential "diamonds in the rough".
Collapse
Affiliation(s)
- Kolleboyina Jayaramulu
- Department
of Chemistry, Indian Institute of Technology
Jammu, Jammu
and Kashmir 181221, India
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute (CATRIN), Palacký
University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
| | - Soumya Mukherjee
- Inorganic
and Metal−Organic Chemistry, Department of Chemistry and Catalysis
Research Centre, Technical University of
Munich, Garching 85748, Germany
| | - Dulce M. Morales
- Analytical
Chemistry, Center for Electrochemical Sciences (CES), Faculty of Chemistry
and Biochemistry, Ruhr-Universität
Bochum, Universitätsstrasse 150, Bochum D-44780, Germany
- Nachwuchsgruppe
Gestaltung des Sauerstoffentwicklungsmechanismus, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, Berlin 14109, Germany
| | - Deepak P. Dubal
- School
of Chemistry and Physics, Queensland University
of Technology (QUT), 2 George Street, Brisbane, Queensland 4001, Australia
| | - Ashok Kumar Nanjundan
- School
of Chemistry and Physics, Queensland University
of Technology (QUT), 2 George Street, Brisbane, Queensland 4001, Australia
| | - Andreas Schneemann
- Lehrstuhl
für Anorganische Chemie I, Technische
Universität Dresden, Bergstrasse 66, Dresden 01067, Germany
| | - Justus Masa
- Max
Planck Institute for Chemical Energy Conversion, Stiftstrasse 34−36, Mülheim an der Ruhr D-45470, Germany
| | - Stepan Kment
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute (CATRIN), Palacký
University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- Nanotechnology
Centre, CEET, VŠB-Technical University
of Ostrava, 17 Listopadu
2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Wolfgang Schuhmann
- Analytical
Chemistry, Center for Electrochemical Sciences (CES), Faculty of Chemistry
and Biochemistry, Ruhr-Universität
Bochum, Universitätsstrasse 150, Bochum D-44780, Germany
| | - Michal Otyepka
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute (CATRIN), Palacký
University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- IT4Innovations, VŠB-Technical University of Ostrava, 17 Listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Radek Zbořil
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute (CATRIN), Palacký
University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- Nanotechnology
Centre, CEET, VŠB-Technical University
of Ostrava, 17 Listopadu
2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Roland A. Fischer
- Inorganic
and Metal−Organic Chemistry, Department of Chemistry and Catalysis
Research Centre, Technical University of
Munich, Garching 85748, Germany
| |
Collapse
|
8
|
Mechanistic insights into ion-beam induced reduction of graphene oxide: An experimental and theoretical study. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
9
|
Kayan DB, Baran T, Menteş A. Functionalized rGO-Pd nanocomposites as high-performance catalysts for hydrogen generation via water electrolysis. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
10
|
Hochvaldová L, Panáček D, Válková L, Prucek R, Kohlová V, Večeřová R, Kolář M, Kvítek L, Panáček A. Restoration of antibacterial activity of inactive antibiotics via combined treatment with a cyanographene/Ag nanohybrid. Sci Rep 2022; 12:5222. [PMID: 35338239 PMCID: PMC8956642 DOI: 10.1038/s41598-022-09294-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 03/14/2022] [Indexed: 11/18/2022] Open
Abstract
The number of antibiotic-resistant bacterial strains is increasing due to the excessive and inappropriate use of antibiotics, which are therefore becoming ineffective. Here, we report an effective way of enhancing and restoring the antibacterial activity of inactive antibiotics by applying them together with a cyanographene/Ag nanohybrid, a nanomaterial that is applied for the first time for restoring the antibacterial activity of antibiotics. The cyanographene/Ag nanohybrid was synthesized by chemical reduction of a precursor material in which silver cations are coordinated on a cyanographene sheet. The antibacterial efficiency of the combined treatment was evaluated by determining fractional inhibitory concentrations (FIC) for antibiotics with different modes of action (gentamicin, ceftazidime, ciprofloxacin, and colistin) against the strains Escherichia coli, Pseudomonas aeruginosa, and Enterobacter kobei with different resistance mechanisms. Synergistic and partial synergistic effects against multiresistant strains were demonstrated for all of these antibiotics except ciprofloxacin, which exhibited an additive effect. The lowest average FICs equal to 0.29 and 0.39 were obtained for colistin against E. kobei and for gentamicin against E. coli, respectively. More importantly, we have experimentally confirmed for the first time, that interaction between the antibiotic's mode of action and the mechanism of bacterial resistance strongly influenced the combined treatment’s efficacy.
Collapse
Affiliation(s)
- Lucie Hochvaldová
- Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - David Panáček
- Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic.,Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University in Olomouc, Křížkovského 511/8, 779 00, Olomouc, Czech Republic
| | - Lucie Válková
- Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Robert Prucek
- Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Věra Kohlová
- Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Renata Večeřová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacký University in Olomouc, Hněvotínská 5, 775 15, Olomouc, Czech Republic
| | - Milan Kolář
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacký University in Olomouc, Hněvotínská 5, 775 15, Olomouc, Czech Republic
| | - Libor Kvítek
- Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Aleš Panáček
- Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic.
| |
Collapse
|
11
|
Zhang Y, Melchionna M, Medved M, Błoński P, Steklý T, Bakandritsos A, Kment Š, Zbořil R, Otyepka M, Fornaserio P, Naldoni A. Enhanced On‐Site Hydrogen Peroxide Electrosynthesis by a Selectively Carboxylated N‐Doped Graphene Catalyst. ChemCatChem 2021. [DOI: 10.1002/cctc.202100805] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yu Zhang
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
| | - Michele Melchionna
- Department of Chemical and Pharmaceutical Sciences, INSTM University of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Miroslav Medved
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
| | - Piotr Błoński
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
| | - Tomáš Steklý
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
| | - Aristides Bakandritsos
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
- Nanotechnology Centre CEET VŠB – Technical University Ostrava 17 listopadu 2172/15 Ostrava-Poruba 70800 Czech Republic
| | - Štěpán Kment
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
- Nanotechnology Centre CEET VŠB – Technical University Ostrava 17 listopadu 2172/15 Ostrava-Poruba 70800 Czech Republic
| | - Radek Zbořil
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
- Nanotechnology Centre CEET VŠB – Technical University Ostrava 17 listopadu 2172/15 Ostrava-Poruba 70800 Czech Republic
| | - Michal Otyepka
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
- IT4Innovations, VSB – Technical University of Ostrava 17. listopadu 2172/15 70800 Ostrava-Poruba Czech Republic
| | - Paolo Fornaserio
- Department of Chemical and Pharmaceutical Sciences, INSTM University of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Alberto Naldoni
- Czech Advanced Technology and Research Institute Regional Centre of Advanced Technologies and Materials Palacky University Slechtitelu 27 77900 Olomouc Czech Republic
- Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 P. R. China
| |
Collapse
|
12
|
Hydrothermally reduced graphene oxide as a sensing material for electrically transduced pH sensors. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
13
|
Veloso AD, Oliveira MC. Redox-active water-soluble carbon nanomaterials generated from graphite. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Barry E, Burns R, Chen W, De Hoe GX, De Oca JMM, de Pablo JJ, Dombrowski J, Elam JW, Felts AM, Galli G, Hack J, He Q, He X, Hoenig E, Iscen A, Kash B, Kung HH, Lewis NHC, Liu C, Ma X, Mane A, Martinson ABF, Mulfort KL, Murphy J, Mølhave K, Nealey P, Qiao Y, Rozyyev V, Schatz GC, Sibener SJ, Talapin D, Tiede DM, Tirrell MV, Tokmakoff A, Voth GA, Wang Z, Ye Z, Yesibolati M, Zaluzec NJ, Darling SB. Advanced Materials for Energy-Water Systems: The Central Role of Water/Solid Interfaces in Adsorption, Reactivity, and Transport. Chem Rev 2021; 121:9450-9501. [PMID: 34213328 DOI: 10.1021/acs.chemrev.1c00069] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The structure, chemistry, and charge of interfaces between materials and aqueous fluids play a central role in determining properties and performance of numerous water systems. Sensors, membranes, sorbents, and heterogeneous catalysts almost uniformly rely on specific interactions between their surfaces and components dissolved or suspended in the water-and often the water molecules themselves-to detect and mitigate contaminants. Deleterious processes in these systems such as fouling, scaling (inorganic deposits), and corrosion are also governed by interfacial phenomena. Despite the importance of these interfaces, much remains to be learned about their multiscale interactions. Developing a deeper understanding of the molecular- and mesoscale phenomena at water/solid interfaces will be essential to driving innovation to address grand challenges in supplying sufficient fit-for-purpose water in the future. In this Review, we examine the current state of knowledge surrounding adsorption, reactivity, and transport in several key classes of water/solid interfaces, drawing on a synergistic combination of theory, simulation, and experiments, and provide an outlook for prioritizing strategic research directions.
Collapse
Affiliation(s)
- Edward Barry
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Raelyn Burns
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Wei Chen
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Guilhem X De Hoe
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Joan Manuel Montes De Oca
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Juan J de Pablo
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - James Dombrowski
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Jeffrey W Elam
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Alanna M Felts
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Giulia Galli
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - John Hack
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Qiming He
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Xiang He
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Eli Hoenig
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Aysenur Iscen
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Benjamin Kash
- Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Harold H Kung
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Nicholas H C Lewis
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Chong Liu
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Xinyou Ma
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Anil Mane
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Alex B F Martinson
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Karen L Mulfort
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Julia Murphy
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Kristian Mølhave
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, Kgs. Lyngby, Lyngby, Hovedstaden 2800, DK Denmark
| | - Paul Nealey
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Yijun Qiao
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Vepa Rozyyev
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - George C Schatz
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Steven J Sibener
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Dmitri Talapin
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - David M Tiede
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Matthew V Tirrell
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Andrei Tokmakoff
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Gregory A Voth
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Zhongyang Wang
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Zifan Ye
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Murat Yesibolati
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, Kgs. Lyngby, Lyngby, Hovedstaden 2800, DK Denmark
| | - Nestor J Zaluzec
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Photon Sciences Directorate, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Seth B Darling
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| |
Collapse
|
15
|
Panáček D, Hochvaldová L, Bakandritsos A, Malina T, Langer M, Belza J, Martincová J, Večeřová R, Lazar P, Poláková K, Kolařík J, Válková L, Kolář M, Otyepka M, Panáček A, Zbořil R. Silver Covalently Bound to Cyanographene Overcomes Bacterial Resistance to Silver Nanoparticles and Antibiotics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2003090. [PMID: 34194925 PMCID: PMC8224420 DOI: 10.1002/advs.202003090] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 02/22/2021] [Indexed: 05/26/2023]
Abstract
The ability of bacteria to develop resistance to antibiotics is threatening one of the pillars of modern medicine. It was recently understood that bacteria can develop resistance even to silver nanoparticles by starting to produce flagellin, a protein which induces their aggregation and deactivation. This study shows that silver covalently bound to cyanographene (GCN/Ag) kills silver-nanoparticle-resistant bacteria at concentrations 30 times lower than silver nanoparticles, a challenge which has been so far unmet. Tested also against multidrug resistant strains, the antibacterial activity of GCN/Ag is systematically found as potent as that of free ionic silver or 10 nm colloidal silver nanoparticles. Owing to the strong and multiple dative bonds between the nitrile groups of cyanographene and silver, as theory and experiments confirm, there is marginal silver ion leaching, even after six months of storage, and thus very high cytocompatibility to human cells. Molecular dynamics simulations suggest strong interaction of GCN/Ag with the bacterial membrane, and as corroborated by experiments, the antibacterial activity does not rely on the release of silver nanoparticles or ions. Endowed with these properties, GCN/Ag shows that rigid supports selectively and densely functionalized with potent silver-binding ligands, such as cyanographene, may open new avenues against microbial resistance.
Collapse
Affiliation(s)
- David Panáček
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
| | - Lucie Hochvaldová
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Aristides Bakandritsos
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
- Nanotechnology CentreCentre of Energy and Environmental TechnologiesVŠB–Technical University of Ostrava17. listopadu 2172/15Ostrava‐Poruba708 00Czech Republic
| | - Tomáš Malina
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Michal Langer
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
| | - Jan Belza
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Jana Martincová
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Renata Večeřová
- Department of MicrobiologyFaculty of Medicine and DentistryPalacký University OlomoucHněvotínská 3Olomouc775 15Czech Republic
| | - Petr Lazar
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Kateřina Poláková
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
| | - Jan Kolařík
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Lucie Válková
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Milan Kolář
- Department of MicrobiologyFaculty of Medicine and DentistryPalacký University OlomoucHněvotínská 3Olomouc775 15Czech Republic
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Aleš Panáček
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Nanotechnology CentreCentre of Energy and Environmental TechnologiesVŠB–Technical University of Ostrava17. listopadu 2172/15Ostrava‐Poruba708 00Czech Republic
| |
Collapse
|
16
|
Cho JY, Kim JH, Han JT. Extraordinary thermal behavior of graphene oxide in air for electrode applications. NANOSCALE ADVANCES 2021; 3:1597-1602. [PMID: 36132569 PMCID: PMC9417645 DOI: 10.1039/d0na00805b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/01/2021] [Indexed: 06/15/2023]
Abstract
The thermal stability of solution-exfoliated graphene oxide (GO) in air is one of the most important physical properties influencing its potential applications. To date, the majority of the GO prepared by the KMnO4-based oxidation of graphite is thermally unstable in air due to the presence of highly oxidative functional groups, such as carboxyl and lactol groups that possess defective basal plane structures. Here, we demonstrate that less defective and metal ion-free GO nanosheets including those with a high oxidation level can remain very stable even above 300 °C under ambient conditions. These GO nanosheets were produced by the exfoliation of graphite oxide fabricated by the modified Brodie method in NH4OH solution, effectively excluding metal ions that can promote the thermal decomposition of GO in air at elevated temperatures. The deoxygenation of ammonia-assisted GO (AGO) was initiated at temperatures above 200 °C, while GO exfoliated in the KOH solution (KGO) decomposed, even at 180 °C. Notably, AGO was exceptionally resistant at 400 °C, even at a very slow heating rate of 2 °C min-1. Conversely, KGO was significantly oxidized, even at 250 °C. The superior thermal stability of AGO is favorable for the fabrication of conductive surface graphene films and conductive fibers by low-temperature annealing.
Collapse
Affiliation(s)
- Joon Young Cho
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 51543 Republic of Korea
- Department of Electro-Functionality Materials Engineering, University of Science and Technology (UST) Changwon 51543 Republic of Korea
| | - Jung Hoon Kim
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 51543 Republic of Korea
| | - Joong Tark Han
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 51543 Republic of Korea
- Department of Electro-Functionality Materials Engineering, University of Science and Technology (UST) Changwon 51543 Republic of Korea
| |
Collapse
|
17
|
Kolařík J, Bakandritsos A, Bad'ura Z, Lo R, Zoppellaro G, Kment Š, Naldoni A, Zhang Y, Petr M, Tomanec O, Filip J, Otyepka M, Hobza P, Zbořil R. Carboxylated Graphene for Radical-Assisted Ultra-Trace-Level Water Treatment and Noble Metal Recovery. ACS NANO 2021; 15:3349-3358. [PMID: 33464824 DOI: 10.1021/acsnano.0c10093] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sorption technologies, enabling removal of heavy metals, play a pivotal role in meeting the global demands for unrestricted access to drinking water. Standard sorption technologies suffer from limited efficiency related to the weak sorbent-metal interaction. Further challenges include the development of technologies enabling smart metal recovery and sorbent regeneration. To this end, a densely functionalized graphene, with 33% by mass content of carboxyl groups, linked through direct C-C bonds (graphene acid, GA) represents a previously unexplored solution to this challenge. GA revealed excellent efficiency for removal of highly toxic metals, such as Cd2+ and Pb2+. Due to its selective chemistry, GA can bind heavy metals with high affinity, even at concentrations of 1 mg L-1 and in the presence of competing ions of natural drinking water, and reduce them down to drinking water allowance levels of a few μg L-1. This is not only due to carboxyl groups but also due to the stable radical centers of the GA structure, enabling metal ion-radical interactions, as proved by EPR, XPS, and density functional theory calculations. GA offers full structural integrity during the highly acidic and basic treatment, which is exploited for noble metal recovery (Ga3+, In3+, Pd2+) and sorbent regeneration. Owing to these attributes, GA represents a fully reusable metal sorbent, applicable also in electrochemical energy technologies, as illustrated with a GA/Pt catalyst derived from Pt4+-contaminated water.
Collapse
Affiliation(s)
- Jan Kolařík
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Aristides Bakandritsos
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
- Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Zdeněk Bad'ura
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
- Department of Experimental Physics, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Rabindranath Lo
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Giorgio Zoppellaro
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Štěpán Kment
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
- Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Alberto Naldoni
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Yu Zhang
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Martin Petr
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Ondřej Tomanec
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Jan Filip
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
| | - Pavel Hobza
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Křížkovského 511/8, 779 00 Olomouc, Czech Republic
- Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| |
Collapse
|
18
|
Solodov AN, Shayimova J, Amirov RR, Dimiev AM. Mimicking the graphene oxide structure in solutions by interaction of Fe(III) and Gd(III) with model small-size ligands. The NMR relaxation study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
19
|
Iakunkov A, Talyzin AV. Swelling properties of graphite oxides and graphene oxide multilayered materials. NANOSCALE 2020; 12:21060-21093. [PMID: 33084722 DOI: 10.1039/d0nr04931j] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Graphite oxide (GtO) and graphene oxide (GO) multilayered laminates are hydrophilic materials easily intercalated by water and other polar solvents. By definition, an increase in the volume of a material connected to the uptake of a liquid or vapour is named swelling. Swelling is a property which defines graphite oxides and graphene oxides. Less oxidized materials not capable of swelling should be named oxidized graphene. The infinite swelling of graphite oxide yields graphene oxide in aqueous dispersions. Graphene oxide sheets dispersed in a polar solvent can be re-assembled into multilayered structures and named depending on applications as films, papers or membranes. The multilayered GO materials exhibit swelling properties which are mostly similar to those of graphite oxides but not identical and in some cases surprisingly different. Swelling is a key property of GO materials in all applications which involve the sorption of water/solvents from vapours, immersion of GO into liquid water/solvents and solution based chemical reactions. These applications include sensors, sorption/removal of pollutants from waste waters, separation of liquid and gas mixtures, nanofiltration, water desalination, water-permeable protective coatings, etc. Swelling defines the distance between graphene oxide sheets in solution-immersed GO materials and the possibility for penetration of ions and molecules inside of interlayers. A high sorption capacity of GO towards many molecules and cations is defined by swelling which makes the very high surface area of GO accessible. GtO and GO swelling is a surprisingly complex phenomenon which is manifested in a variety of different ways. Swelling is strongly different for materials produced using the most common Brodie and Hummers oxidation procedures; it depends on the degree of oxidation, ad temperature and pressure conditions. The value of the GO interlayer distance is especially important in membrane applications. Diffusion of solvent molecules and ions is defined by the size of "permeation channels" provided by the swelled GO structure. According to extensive studies performed over the last decade the exact value of the inter-layer distance in swelled GO depends on the nature of solvent, temperature and pressure conditions, and the pH and concentration of solutions and exhibits pronounced aging effects. This review provides insight into the fundamental swelling properties of multilayered GO and demonstrates links to advanced applications of these materials.
Collapse
Affiliation(s)
- Artem Iakunkov
- Department of Physics, Umeå University, SE-901 87 Umeå, Sweden.
| | | |
Collapse
|
20
|
Mohd Firdaus R, Berrada N, Desforges A, Mohamed AR, Vigolo B. From 2D Graphene Nanosheets to 3D Graphene-based Macrostructures. Chem Asian J 2020; 15:2902-2924. [PMID: 32779360 DOI: 10.1002/asia.202000747] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/09/2020] [Indexed: 12/29/2022]
Abstract
The combination of exceptional functionalities offered by 3D graphene-based macrostructures (GBMs) has attracted tremendous interest. 2D graphene nanosheets have a high chemical stability, high surface area and customizable porosity, which was extensively researched for a variety of applications including CO2 adsorption, water treatment, batteries, sensors, catalysis, etc. Recently, 3D GBMs have been successfully achieved through few approaches, including direct and non-direct self-assembly methods. In this review, the possible routes used to prepare both 2D graphene and interconnected 3D GBMs are described and analyzed regarding the involved chemistry of each 2D/3D graphene system. Improvement of the accessible surface of 3D GBMs where the interface exchanges are occurring is of great importance. A better control of the chemical mechanisms involved in the self-assembly mechanism itself at the nanometer scale is certainly the key for a future research breakthrough regarding 3D GBMs.
Collapse
Affiliation(s)
- Rabita Mohd Firdaus
- School of Chemical Engineering, Engineering Campus Universiti Sains, Malaysia, 14300, Nibong Tebal, Seberang, Perai Selatan, P., Pinang, Malaysia.,Université de Lorraine, CNRS, IJL, F-54000, Nancy, France
| | - Nawal Berrada
- Université de Lorraine, CNRS, IJL, F-54000, Nancy, France
| | | | - Abdul Rahman Mohamed
- School of Chemical Engineering, Engineering Campus Universiti Sains, Malaysia, 14300, Nibong Tebal, Seberang, Perai Selatan, P., Pinang, Malaysia
| | | |
Collapse
|
21
|
Theranostic Nanoplatforms of Thiolated Reduced Graphene Oxide Nanosheets and Gold Nanoparticles. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10165529] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this study, graphene oxide (GO) and reduced-thiolated GO (rGOSH) were used as 2D substrate to fabricate nanocomposites with nanoparticles of gold nanospheres (AuNS) or nanorods (AuNR), via in situ reduction of the metal salt precursor and seed-mediated growth processes. The plasmonic sensing capability of the gold-decorated nanosheets were scrutinized by UV-visible (UV-VIS) spectroscopy. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), thermogravimetric analyses (TGA), and atomic force microscopy (AFM) were performed in order to prove the actual reduction that occurred concomitantly with the thiolation of GO, the increase in the hydrophobic character as well as the size, and preferential gathering of the gold nanoparticles onto the nanosheet substrates, respectively. Moreover, the theoretical electronic and infrared absorption (UV-VIS and IR) spectra were calculated within a time-dependent approach of density functional theory (DFT). Eventually, in vitro cellular experiments on human neuroblastoma cells (SH-SY5Y line) were carried out in order to evaluate the nanotoxicity of the nanocomposites by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide tetrazolium reduction (MTT) colorimetric assay. Results pointed out the promising potential of these hybrids as plasmonic theranostic platforms with different hydrophilic or hydrophobic features as well as cytotoxic effects against cancer cells.
Collapse
|
22
|
Piñeiro-García A, Vega-Díaz SM, Tristán F, Meneses-Rodríguez D, Labrada-Delgado GJ, Semetey V. Photochemical Functionalization of Graphene Oxide by Thiol–Ene Click Chemistry. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01252] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexis Piñeiro-García
- Departamento de Ingeniería Química, Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Avenida Tecnológico esq., A. Garcia Cubas S/N, Celaya CP 38010, Guanajuato, Mexico
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 11 Rue Pierre et Marie Curie, 75005 Paris, France
| | - Sofia M. Vega-Díaz
- Departamento de Ingeniería Química, Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Avenida Tecnológico esq., A. Garcia Cubas S/N, Celaya CP 38010, Guanajuato, Mexico
| | - Ferdinando Tristán
- Departamento de Ingeniería Química, Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Avenida Tecnológico esq., A. Garcia Cubas S/N, Celaya CP 38010, Guanajuato, Mexico
| | - David Meneses-Rodríguez
- Cátedras-CONACYT CINVESTAV, Mérida Km 6, Carretera Antigua a Progreso, Cordemex, Mérida CP 97310, Yucatán, Mexico
| | | | - Vincent Semetey
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 11 Rue Pierre et Marie Curie, 75005 Paris, France
| |
Collapse
|
23
|
Ahmad K, Hui YZ, Bairq ZAS. Comparison of the performance of a hydrogel and hybrid graphene oxide with hydrogel to remove iron (III) and phenol from wastewater. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04110-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Kouloumpis A, Chronopoulos DD, Potsi G, Pykal M, Vlček J, Scheibe M, Otyepka M. One-Step Synthesis of Janus Fluorographene Derivatives. Chemistry 2020; 26:6518-6524. [PMID: 32027766 DOI: 10.1002/chem.201905866] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Indexed: 11/06/2022]
Abstract
Fluorographene, a two-dimensional derivative of graphene, is an excellent starting material for the synthesis of graphene derivatives. In this work, a one-step, substrate-free method for the asymmetric functionalization of fluorographene layers with hydroxyl groups by a facile nucleophilic substitution reaction is reported. Such a chemical modification occurs in a biphasic aqueous-organic system under mild conditions, leading to Janus graphene nanosheets functionalized by hydroxyl groups on one side and retaining fluorine atoms on the other. The reported experimental route paves the way for two-dimensional bifacial graphene templates, thus broadening the application potential of graphene materials.
Collapse
Affiliation(s)
- Antonios Kouloumpis
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Demetrios D Chronopoulos
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Georgia Potsi
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Martin Pykal
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Jakub Vlček
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Magdalena Scheibe
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Michal Otyepka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| |
Collapse
|
25
|
Yang D, Mo W, Zhang S, Li B, Hu D, Chen S. A graphene oxide functionalized energetic coordination polymer possesses good thermostability, heat release and combustion catalytic performance for ammonium perchlorate. Dalton Trans 2020; 49:1582-1590. [PMID: 31939968 DOI: 10.1039/c9dt03491a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A new energetic coordination polymer (ECP) composite, namely GO-Cu(ii)-AmTZ, has been synthesized by 3-amino-1,2,4-triazole (AmTZ) and multifunctional graphene oxide (GO) coordination with Cu(ii) successively. The ECP composite was further characterized through SEM, EDS and XPS analysis as well as FTIR and Raman spectroscopy. It shows high thermostability, high decomposition heat release and insensitivity to mechanical stimuli. What's more, thermal analysis data for ammonium perchlorate (AP) have been obtained by mechanically mixing GO-Cu(ii)-AmTZ and AP. The low-temperature decomposition (LTD, 335.3 °C) and high-temperature decomposition (HTD, 441.3 °C) peaks of AP were reduced to an exothermic peak at 298.4 °C at a heating rate of 10 °C min-1. GO-Cu(ii)-AmTZ exhibits outstanding catalytic performance by decreasing the activation energy from 168.7 kJ mol-1 to 122.4 kJ mol-1, indicating its promising application as a combustion catalyst for improving the thermal-catalytic decomposition performance of energetic materials largely. In addition, thermal analysis techniques including thermogravimetry coupled with mass spectrometry (TG/MS) and thermogravimetry coupled with infrared spectrometry (TG/IR) were employed to determine the decomposition mechanisms.
Collapse
Affiliation(s)
- Desuo Yang
- College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China.
| | | | | | | | | | | |
Collapse
|
26
|
Seelajaroen H, Bakandritsos A, Otyepka M, Zbořil R, Sariciftci NS. Immobilized Enzymes on Graphene as Nanobiocatalyst. ACS APPLIED MATERIALS & INTERFACES 2020; 12:250-259. [PMID: 31816230 PMCID: PMC6953471 DOI: 10.1021/acsami.9b17777] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/09/2019] [Indexed: 05/23/2023]
Abstract
Using enzymes as bioelectrocatalysts is an important step toward the next level of biotechnology for energy production. In such biocatalysts, a sacrificial cofactor as an electron and proton source is needed. This is a great obstacle for upscaling, due to cofactor instability and product separation issues, which increase the costs. Here, we report a cofactor-free electroreduction of CO2 to a high energy density chemical (methanol) catalyzed by enzyme-graphene hybrids. The biocatalyst consists of dehydrogenases covalently bound on a well-defined carboxyl graphene derivative, serving the role of a conductive nanoplatform. This nanobiocatalyst achieves reduction of CO2 to methanol at high current densities, which remain unchanged for at least 20 h of operation, without production of other soluble byproducts. It is thus shown that critical improvements on the stability and rate of methanol production at a high Faradaic efficiency of 12% are possible, due to the effective electrochemical process from the electrode to the enzymes via the graphene platform.
Collapse
Affiliation(s)
- Hathaichanok Seelajaroen
- Linz
Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, Linz, 4040, Austria
| | - Aristides Bakandritsos
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry Faculty of Science, Palacký
University Olomouc, Listopadu 1192/12, Olomouc, 771 46, Czech Republic
| | - Michal Otyepka
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry Faculty of Science, Palacký
University Olomouc, Listopadu 1192/12, Olomouc, 771 46, Czech Republic
| | - Radek Zbořil
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry Faculty of Science, Palacký
University Olomouc, Listopadu 1192/12, Olomouc, 771 46, Czech Republic
| | - Niyazi Serdar Sariciftci
- Linz
Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, Linz, 4040, Austria
| |
Collapse
|
27
|
Lenarda A, Bakandritsos A, Bevilacqua M, Tavagnacco C, Melchionna M, Naldoni A, Steklý T, Otyepka M, Zbořil R, Fornasiero P. Selective Functionalization Blended with Scaffold Conductivity in Graphene Acid Promotes H 2O 2 Electrochemical Sensing. ACS OMEGA 2019; 4:19944-19952. [PMID: 31788627 PMCID: PMC6882107 DOI: 10.1021/acsomega.9b02881] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
The widespread industrial use of H2O2 has provoked great interest in the development of new and more efficient materials for its detection. Enzymatic electrochemical sensors have drawn particular attention, primarily because of their excellent selectivity. However, their high cost, instability, complex immobilization, and inherent tendency toward denaturation of the enzyme significantly limit their practical usefulness. Inspired by the powerful proton-catalyzed H2O2 reduction mechanism of peroxidases, we have developed a well-defined and densely functionalized carboxylic graphene derivative (graphene acid, GA) that serves as a proton source and conductive electrode for binding and detecting H2O2. An unprecedented H2O2 sensitivity of 525 μA cm-2 mM-1 is achieved by optimizing the balance between the carboxyl group content and scaffold conductivity of GA. Importantly, the GA sensor greatly outperforms all reported carbon-based H2O2 sensors and is superior to enzymatic ones because of its simple immobilization, low cost, and uncompromised sensitivity even after continuous operation for 7 days. In addition, GA-based sensing electrodes remain highly selective in the presence of interferents such as ascorbic acid, paracetamol, and glucose, as well as complex matrices such as milk. GA-based sensors thus have considerable potential for use in practical industrial sensing technologies.
Collapse
Affiliation(s)
- Anna Lenarda
- Department
of Chemical and Pharmaceutical Sciences, INSTM and ICCOM-CNR, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Aristides Bakandritsos
- Regional
Centre of Advanced Technologies and Materials and Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Manuela Bevilacqua
- Department
of Chemical and Pharmaceutical Sciences, INSTM and ICCOM-CNR, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Claudio Tavagnacco
- Department
of Chemical and Pharmaceutical Sciences, INSTM and ICCOM-CNR, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Michele Melchionna
- Department
of Chemical and Pharmaceutical Sciences, INSTM and ICCOM-CNR, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Alberto Naldoni
- Regional
Centre of Advanced Technologies and Materials and Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Tomáš Steklý
- Regional
Centre of Advanced Technologies and Materials and Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Michal Otyepka
- Regional
Centre of Advanced Technologies and Materials and Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Radek Zbořil
- Regional
Centre of Advanced Technologies and Materials and Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Paolo Fornasiero
- Department
of Chemical and Pharmaceutical Sciences, INSTM and ICCOM-CNR, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| |
Collapse
|
28
|
Rezvani Moghaddam A, Kamkar M, Ranjbar Z, Sundararaj U, Jannesari A, Ranjbar B. Tuning the Network Structure of Graphene/Epoxy Nanocomposites by Controlling Edge/Basal Localization of Functional Groups. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03607] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amir Rezvani Moghaddam
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 Canada
| | - Milad Kamkar
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 Canada
| | - Zahra Ranjbar
- Department of Surface Coatings and Novel technologies, Institute for Color Science and Technology, No. 55, Vafamanesh Street, Hossein Abad Square, Pasdaran, Tehran 16688-36471, Iran
- Center of Excellence for Color Science and Technology, Tehran, Iran
| | - Uttandaraman Sundararaj
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 Canada
| | - Ali Jannesari
- Department of Surface Coatings and Novel technologies, Institute for Color Science and Technology, No. 55, Vafamanesh Street, Hossein Abad Square, Pasdaran, Tehran 16688-36471, Iran
| | | |
Collapse
|
29
|
Direct imaging of light-element impurities in graphene reveals triple-coordinated oxygen. Nat Commun 2019; 10:4570. [PMID: 31594951 PMCID: PMC6783479 DOI: 10.1038/s41467-019-12537-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 09/17/2019] [Indexed: 12/03/2022] Open
Abstract
Along with hydrogen, carbon, nitrogen and oxygen are the arguably most
important elements for organic chemistry. Due to their rich variety of possible
bonding configurations, they can form a staggering number of compounds. Here, we
present a detailed analysis of nitrogen and oxygen bonding configurations in a
defective carbon (graphene) lattice. Using aberration-corrected scanning
transmission electron microscopy and single-atom electron energy loss spectroscopy,
we directly imaged oxygen atoms in graphene oxide, as well as nitrogen atoms
implanted into graphene. The collected data allows us to compare nitrogen and oxygen
bonding configurations, showing clear differences between the two elements. As
expected, nitrogen forms either two or three bonds with neighboring carbon atoms,
with three bonds being the preferred configuration. Oxygen, by contrast, tends to
bind with only two carbon atoms. Remarkably, however, triple-coordinated oxygen with
three carbon neighbors is also observed, a configuration that is exceedingly rare in
organic compounds. Annular dark field scanning transmission electron microscopy is able to
distinguish the contrasts between light elements. Here, the authors directly image
the bonding configurations of oxygen and nitrogen atoms in defective graphene, and
surprisingly identify instances of unusual triple-coordinated oxygen with three
carbon neighbors.
Collapse
|
30
|
Marrani AG, Motta A, Schrebler R, Zanoni R, Dalchiele EA. Insights from experiment and theory into the electrochemical reduction mechanism of graphene oxide. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.02.108] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
31
|
Zhang ZY, Ji D, Mao W, Cui Y, Wang Q, Han L, Zhong H, Wei Z, Zhao Y, Nørgaard K, Li T. Dry Chemistry of Ferrate(VI): A Solvent-Free Mechanochemical Way for Versatile Green Oxidation. Angew Chem Int Ed Engl 2018; 57:10949-10953. [DOI: 10.1002/anie.201805998] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Zhao-Yang Zhang
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Deyang Ji
- Center for Nanotechnology; Heisenbergstraße 11 48149 Münster Germany
| | - Wenting Mao
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Yu Cui
- State Key Laboratory of Superlattices and Microstructures; Institute of Semiconductors; Chinese Academy of Sciences; Beijing 100083 China
| | - Qing Wang
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Lu Han
- School of Chemical Science and Engineering; Tongji University; Shanghai 200092 China
| | - Hongliang Zhong
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Zhongming Wei
- State Key Laboratory of Superlattices and Microstructures; Institute of Semiconductors; Chinese Academy of Sciences; Beijing 100083 China
| | - Yixin Zhao
- School of Environmental Science and Engineering; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Kasper Nørgaard
- Nano-Science Center & Department of Chemistry; University of Copenhagen; Universitetsparken 5 Copenhagen 2100 Denmark
| | - Tao Li
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| |
Collapse
|
32
|
Zhang ZY, Ji D, Mao W, Cui Y, Wang Q, Han L, Zhong H, Wei Z, Zhao Y, Nørgaard K, Li T. Dry Chemistry of Ferrate(VI): A Solvent-Free Mechanochemical Way for Versatile Green Oxidation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805998] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zhao-Yang Zhang
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Deyang Ji
- Center for Nanotechnology; Heisenbergstraße 11 48149 Münster Germany
| | - Wenting Mao
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Yu Cui
- State Key Laboratory of Superlattices and Microstructures; Institute of Semiconductors; Chinese Academy of Sciences; Beijing 100083 China
| | - Qing Wang
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Lu Han
- School of Chemical Science and Engineering; Tongji University; Shanghai 200092 China
| | - Hongliang Zhong
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| | - Zhongming Wei
- State Key Laboratory of Superlattices and Microstructures; Institute of Semiconductors; Chinese Academy of Sciences; Beijing 100083 China
| | - Yixin Zhao
- School of Environmental Science and Engineering; Shanghai Jiao Tong University; Shanghai 200240 China
| | - Kasper Nørgaard
- Nano-Science Center & Department of Chemistry; University of Copenhagen; Universitetsparken 5 Copenhagen 2100 Denmark
| | - Tao Li
- School of Chemistry and Chemical Engineering and Key Laboratory of Thin Film and Microfabrication, (Ministry of Education); Shanghai Jiao Tong University; Shanghai 200240 China
| |
Collapse
|
33
|
Matochová D, Medved’ M, Bakandritsos A, Steklý T, Zbořil R, Otyepka M. 2D Chemistry: Chemical Control of Graphene Derivatization. J Phys Chem Lett 2018; 9:3580-3585. [PMID: 29890828 PMCID: PMC6038093 DOI: 10.1021/acs.jpclett.8b01596] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Controllable synthesis of graphene derivatives with defined composition and properties represents the holy grail of graphene chemistry, especially in view of the low reactivity of graphene. Recent progress in fluorographene (FG) chemistry has opened up new routes for synthesizing a plethora of graphene derivatives with widely applicable properties, but they are often difficult to control. We explored nucleophilic substitution on FG combining density functional theory calculations with experiments to achieve accurate control over the functionalization process. In-depth analysis revealed the complexity of the reaction and identified basic rules for controlling the 2D chemistry. Their application, that is, choice of solvent and reaction time, enabled facile control over the reaction of FG with N-octylamine to form graphene derivatives with tailored content of the alkylamine functional group (2.5-7.5% N atomic content) and F atoms (31.5-3.5% F atomic content). This work substantially extends prospects for the controlled covalent functionalization of graphene.
Collapse
|
34
|
Medveď M, Zoppellaro G, Ugolotti J, Matochová D, Lazar P, Pospíšil T, Bakandritsos A, Tuček J, Zbořil R, Otyepka M. Reactivity of fluorographene is triggered by point defects: beyond the perfect 2D world. NANOSCALE 2018; 10:4696-4707. [PMID: 29442111 PMCID: PMC5892133 DOI: 10.1039/c7nr09426d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 02/06/2018] [Indexed: 05/02/2023]
Abstract
Preparation of graphene derivatives using fluorographene (FG) as a precursor has become a key strategy for the large-scale synthesis of new 2-D materials (e.g. graphene acid, cyanographene, allyl-graphene) with tailored physicochemical properties. However, to gain full control over the derivatization process, it is essential to understand the reaction mechanisms and accompanying processes that affect the composition and structure of the final products. Despite the strength of C-F bonds and high chemical stability of perfluorinated hydrocarbons, FG is surprisingly susceptible to reactions under ambient conditions. There is clear evidence that nucleophilic substitution on FG is accompanied by spontaneous defluorination, and solvent-induced defluorination can occur even in the absence of any nucleophilic agent. Here, we show that distributed radical centers (fluorine vacancies) on the FG surface need to be taken into account in order to rationalize the defluorination mechanism. Depending on the environment, these radical centers can react as electron acceptors, electrophilic sites and/or cause homolytic bond cleavages. We also propose a new radical mechanism of FG defluorination in the presence of N,N'-dimethylformamide (DMF) solvent. Spin-trap experiments as well as 19F NMR measurements unambiguously confirmed formation of N,N'-dimethylformyl radicals and also showed that N,N'-dimethylcarbamoyl fluoride plays a key role in the proposed mechanism. These findings imply that point defects in 2D materials should be considered as key factor determining their chemical properties and reactivity.
Collapse
Affiliation(s)
- Miroslav Medveď
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Giorgio Zoppellaro
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Juri Ugolotti
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Dagmar Matochová
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Petr Lazar
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Tomáš Pospíšil
- Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Chemical Biology and Genetics, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Aristides Bakandritsos
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Jiří Tuček
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic.
| |
Collapse
|
35
|
Kudo A, Jung SM, Strano MS, Kong J, Wardle BL. Catalytic synthesis of few-layer graphene on titania nanowires. NANOSCALE 2018; 10:1015-1022. [PMID: 29265129 DOI: 10.1039/c7nr05853e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Growth mechanisms of graphitic nanostructures on metal oxides by chemical vapor deposition (CVD) are observed at 750 °C, using titania nanowire aerogel (NWAG) as a three-dimensional substrate and without metal catalysts. We temporally observed catalytic transformation of amorphous carbon into few-layer graphene on the surface of 5-10 nm diameter titania nanowires. The graphitization spontaneously terminates when the titania nanowires are encapsulated by a shell of approximately three graphene layers. Extended CVD time beyond the termination point (>1125 seconds) yields only additional amorphous carbon deposits on top of the few-layer graphene. Furthermore, it was discovered that the islands of amorphous carbon do not graphitize unless they catalytically grow beyond a threshold size of 5-7 nm along the nanowire length, even after an extended thermal treatment. The electrical conductivity of the NWAG increased by four orders of magnitude, indicating that the graphene shell mediated by titania nanowires yielded a network of graphene throughout the three-dimensional nanostructure of the aerogel. Our results help us understand the growth mechanisms of few-layer graphene on nanostructured metal oxides, and inspire facile and controllable processing of metal oxide-nanocarbon fiber-shell composites.
Collapse
Affiliation(s)
- Akira Kudo
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | | | | | | | | |
Collapse
|
36
|
Cunha E, Ren H, Lin F, Kinloch IA, Sun Q, Fan Z, Young RJ. The chemical functionalization of graphene nanoplatelets through solvent-free reaction. RSC Adv 2018; 8:33564-33573. [PMID: 35548120 PMCID: PMC9086447 DOI: 10.1039/c8ra04817g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/21/2018] [Indexed: 11/21/2022] Open
Abstract
Graphene nanoplatelets (GNPs) were functionalized through 1,3-dipolar cycloaddition of azomethine ylide using a solvent-free approach and under different reaction conditions. The yield and the functionality of the carboxyl-terminated pyrrolidine ring attached on the surface of GNPs could be affected by varying the reaction temperature as well as the reactant to GNP weight ratio. The functionalized GNPs were characterized extensively using a range of spectroscopic and microscopy techniques. Carboxyl-terminated pyrrolidine functionalized graphene nanoplatelets through a solvent-free reaction.![]()
Collapse
Affiliation(s)
- Eunice Cunha
- National Graphene Institute and School of Materials
- University of Manchester
- Manchester M13 9PL
- UK
| | - He Ren
- Beijing Institute of Aeronautical Materials (BIAM)
- Beijing
- China
| | - Fei Lin
- National Graphene Institute and School of Materials
- University of Manchester
- Manchester M13 9PL
- UK
| | - Ian A. Kinloch
- National Graphene Institute and School of Materials
- University of Manchester
- Manchester M13 9PL
- UK
| | - Quanji Sun
- Beijing Institute of Aeronautical Materials (BIAM)
- Beijing
- China
| | - Zhaodong Fan
- Beijing Institute of Aeronautical Materials (BIAM)
- Beijing
- China
| | - Robert J. Young
- National Graphene Institute and School of Materials
- University of Manchester
- Manchester M13 9PL
- UK
| |
Collapse
|
37
|
Chronopoulos DD, Bakandritsos A, Pykal M, Zbořil R, Otyepka M. Chemistry, properties, and applications of fluorographene. APPLIED MATERIALS TODAY 2017; 9:60-70. [PMID: 29238741 PMCID: PMC5721099 DOI: 10.1016/j.apmt.2017.05.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 05/10/2017] [Accepted: 05/11/2017] [Indexed: 05/23/2023]
Abstract
Fluorographene, formally a two-dimensional stoichiometric graphene derivative, attracted remarkable attention of the scientific community due to its extraordinary physical and chemical properties. We overview the strategies for the preparation of fluorinated graphene derivatives, based on top-down and bottom-up approaches. The physical and chemical properties of fluorographene, which is considered as one of the thinnest insulators with a wide electronic band gap, are presented. Special attention is paid to the rapidly developing chemistry of fluorographene, which was advanced in the last few years. The unusually high reactivity of fluorographene, which can be chemically considered perfluorinated hydrocarbon, enables facile and scalable access to a wide portfolio of graphene derivatives, such as graphene acid, cyanographene and allyl-graphene. Finally, we summarize the so far reported applications of fluorographene and fluorinated graphenes, spanning from sensing and bioimaging to separation, electronics and energy technologies.
Collapse
|
38
|
Bakandritsos A, Pykal M, Błoński P, Jakubec P, Chronopoulos DD, Poláková K, Georgakilas V, Čépe K, Tomanec O, Ranc V, Bourlinos AB, Zbořil R, Otyepka M. Cyanographene and Graphene Acid: Emerging Derivatives Enabling High-Yield and Selective Functionalization of Graphene. ACS NANO 2017; 11:2982-2991. [PMID: 28208019 PMCID: PMC5371925 DOI: 10.1021/acsnano.6b08449] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 02/16/2017] [Indexed: 05/18/2023]
Abstract
Efficient and selective methods for covalent derivatization of graphene are needed because they enable tuning of graphene's surface and electronic properties, thus expanding its application potential. However, existing approaches based mainly on chemistry of graphene and graphene oxide achieve only limited level of functionalization due to chemical inertness of the surface and nonselective simultaneous attachment of different functional groups, respectively. Here we present a conceptually different route based on synthesis of cyanographene via the controllable substitution and defluorination of fluorographene. The highly conductive and hydrophilic cyanographene allows exploiting the complex chemistry of -CN groups toward a broad scale of graphene derivatives with very high functionalization degree. The consequent hydrolysis of cyanographene results in graphene acid, a 2D carboxylic acid with pKa of 5.2, showing excellent biocompatibility, conductivity and dispersibility in water and 3D supramolecular assemblies after drying. Further, the carboxyl groups enable simple, tailored and widely accessible 2D chemistry onto graphene, as demonstrated via the covalent conjugation with a diamine, an aminothiol and an aminoalcohol. The developed methodology represents the most controllable, universal and easy to use approach toward a broad set of 2D materials through consequent chemistries on cyanographene and on the prepared carboxy-, amino-, sulphydryl-, and hydroxy- graphenes.
Collapse
Affiliation(s)
- Aristides Bakandritsos
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Martin Pykal
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Piotr Błoński
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Petr Jakubec
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Demetrios D. Chronopoulos
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Kateřina Poláková
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | | | - Klára Čépe
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Ondřej Tomanec
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Václav Ranc
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Athanasios B. Bourlinos
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
- Physics
Department, University of Ioannina, Ioannina 455 00, Greece
| | - Radek Zbořil
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
- E-mail:
| | - Michal Otyepka
- Regional
Centre for Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký
University Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
- E-mail:
| |
Collapse
|
39
|
Eng AYS, Sofer Z, Sedmidubský D, Pumera M. Synthesis of Carboxylated-Graphenes by the Kolbe-Schmitt Process. ACS NANO 2017; 11:1789-1797. [PMID: 28094511 DOI: 10.1021/acsnano.6b07746] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Graphene oxide is an oxidized form of graphene containing a large variety of oxygen groups. Although past models have suggested carboxylic acids to be present in significant amounts, recent evidence has shown otherwise. Toward the production of carboxyl-graphene, a synthetic method is presented herein based on the Kolbe-Schmitt process. A modified procedure of heating graphite oxide in the presence of a KOH/CaO mixture results in up to 11 atom % of carboxylic groups. The graphite oxide starting material and reaction temperature were investigated as two important factors, where a crumpled morphology of graphite oxide flakes and a lower 220 °C temperature preferentially led to greater carboxyl functionalization. Successful carboxylation caused a band gap opening of ∼2.5 eV in the smallest carboxyl-graphene particles, which also demonstrated a yellow fluorescence under UV light unseen in its counterpart produced at 500 °C. These results are in good agreement with theoretical calculations showing band gap opening and spin polarization of impurity states. This demonstrates the current synthetic process as yet another approach toward tuning the physical properties of graphene.
Collapse
Affiliation(s)
- Alex Yong Sheng Eng
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
| | - David Sedmidubský
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6, Czech Republic
| | - Martin Pumera
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
| |
Collapse
|
40
|
Froning JP, Lazar P, Pykal M, Li Q, Dong M, Zbořil R, Otyepka M. Direct mapping of chemical oxidation of individual graphene sheets through dynamic force measurements at the nanoscale. NANOSCALE 2017; 9:119-127. [PMID: 27735008 PMCID: PMC5310523 DOI: 10.1039/c6nr05799c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/26/2016] [Indexed: 05/30/2023]
Abstract
Graphene oxide is one of the most studied nanomaterials owing to its huge application potential in many fields, including biomedicine, sensing, drug delivery, optical and optoelectronic technologies. However, a detailed description of the chemical composition and the extent of oxidation in graphene oxide remains a key challenge affecting its applicability and further development of new applications. Here, we report direct monitoring of the chemical oxidation of an individual graphene flake during ultraviolet/ozone treatment through in situ atomic force microscopy based on dynamic force mapping. The results showed that graphene oxidation expanded from the graphene edges to the entire graphene surface. The interaction force mapping results correlated well with X-ray photoelectron spectroscopy data quantifying the degree of chemical oxidation. Density functional theory calculations confirmed the specific interaction forces measured between a silicon tip and graphene oxide. The developed methodology can be used as a simple protocol for evaluating the chemical functionalization of other two-dimensional materials with covalently attached functional groups.
Collapse
Affiliation(s)
- Jens P. Froning
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Aarhus C 8000 , Denmark .
| | - Petr Lazar
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
| | - Martin Pykal
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
| | - Qiang Li
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Aarhus C 8000 , Denmark .
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Aarhus C 8000 , Denmark .
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials (RCPTM) , Department of Physical Chemistry , Palacký University Olomouc , Olomouc 78371 , Czech Republic . ;
| |
Collapse
|
41
|
Shin DS, Kim HG, Ahn HS, Jeong HY, Kim YJ, Odkhuu D, Tsogbadrakh N, Lee HBR, Kim BH. Distribution of oxygen functional groups of graphene oxide obtained from low-temperature atomic layer deposition of titanium oxide. RSC Adv 2017. [DOI: 10.1039/c7ra00114b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The island-like distribution of the oxygen functional groups of graphene oxide was identified by deposition of TiO2 on the graphene oxide surface using low-temperature atomic layer deposition.
Collapse
Affiliation(s)
- Dong Seok Shin
- Department of Physics
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - Hyun Gu Kim
- Department of Materials Science and Engineering, and Innovation Center for Chemical Engineering
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - Ho Seon Ahn
- Department of Mechanical Engineering
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - Hu Young Jeong
- UNIST Central Research Facilities (UCRF)
- School of Materials Science and Engineering
- UNIST
- Ulsan 44919
- Republic of Korea
| | - Youn-Jung Kim
- Department of Marine Science
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - Dorj Odkhuu
- Department of Physics
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - N. Tsogbadrakh
- Department of Physics
- National University of Mongolia
- Ulaanbaatar 14201
- Mongolia
| | - Han-Bo-Ram Lee
- Department of Materials Science and Engineering, and Innovation Center for Chemical Engineering
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - Byung Hoon Kim
- Department of Physics
- Incheon National University
- Incheon 22012
- Republic of Korea
| |
Collapse
|
42
|
Eng AYS, Chua CK, Pumera M. Facile labelling of graphene oxide for superior capacitive energy storage and fluorescence applications. Phys Chem Chem Phys 2016; 18:9673-81. [PMID: 26998537 DOI: 10.1039/c5cp07254a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The majority of supercapacitor research studies on graphene materials today have been based upon developing electrochemical double-layer capacitors (EDLCs) using reduced graphenes. In contrast, graphene oxide (GO) is often neglected as a supercapacitor candidate due to its low electrical conductivity and surface area. Nonetheless, we present herein a fast (1 h) labelling of GO with o-phenylenediamine (PD) to produce PD-GO, exploiting inherent oxygen groups in creating new functionalities that exhibit capacitive enhancement from pseudo-capacitance. A high specific capacitance of 191 F g(-1) was obtained (at 0.2 A g(-1)), comparable to recent binder-free graphene supercapacitors. The large surface-normalized capacitance of up to 628 μF cm(-2) is also many times greater than the intrinsic capacitance of single-layer graphene (21 μF cm(-2)) as a result of additional pseudo-capacitance. A high capacity retention of ∼85% with each 10-fold increase in current density further indicates excellent rate performance. Hence, this approach in enhancing GO pseudo-capacitance may be similarly feasible as graphene EDLCs. Additionally, PD-GO was also found to exhibit a bright green fluorescence with a 540 nm maximum. The strongest fluorescence intensities arose from the smallest PD-GO fragments, and we attribute the origin to localised sp(2) domains and newly formed phenazine edge groups. The dual enhancement of dissimilar properties such as capacitance and fluorescence emphasizes the continued significance of covalent functionalisation towards tuning of properties in graphene-type materials.
Collapse
Affiliation(s)
- Alex Yong Sheng Eng
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| | - Chun Kiang Chua
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| | - Martin Pumera
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| |
Collapse
|
43
|
Vacchi IA, Spinato C, Raya J, Bianco A, Ménard-Moyon C. Chemical reactivity of graphene oxide towards amines elucidated by solid-state NMR. NANOSCALE 2016; 8:13714-13721. [PMID: 27411370 DOI: 10.1039/c6nr03846h] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Graphene oxide (GO) is an attractive nanomaterial for many applications. Controlling the functionalization of GO is essential for the design of graphene-based conjugates with novel properties. But, the chemical composition of GO has not been fully elucidated yet. Due to the high reactivity of the oxygenated moieties, mainly epoxy, hydroxyl and carboxyl groups, several derivatization reactions may occur concomitantly. The reactivity of GO with amine derivatives has been exploited in the literature to design graphene-based conjugates, mainly through amidation. However, in this study we undoubtedly demonstrate using magic angle spinning (MAS) solid-state NMR that the reaction between GO and amine functions occurs via ring opening of the epoxides, and not by amidation. We also prove that there is a negligible amount of carboxylic acid groups in two GO samples obtained by a different synthesis process, hence eliminating the possibility of amidation reactions with amine derivatives. This work brings additional insights into the chemical reactivity of GO, which is fundamental to control its functionalization, and highlights the major role of MAS NMR spectroscopy for a comprehensive characterization of derivatized GO.
Collapse
Affiliation(s)
- Isabella A Vacchi
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| | - Cinzia Spinato
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| | - Jésus Raya
- Membrane Biophysics and NMR, Institute of Chemistry, UMR 7177, University of Strasbourg, Strasbourg, France
| | - Alberto Bianco
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| | - Cécilia Ménard-Moyon
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| |
Collapse
|