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Stefanović A, Kepić D, Momčilović M, Mead JL, Huskić M, Haddadi K, Sebbache M, Todorović Marković B, Jovanović S. Determination of Photothermal and EMI Shielding Efficiency of Graphene-Silver Nanoparticle Composites Prepared under Low-Dose Gamma Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:912. [PMID: 38869537 PMCID: PMC11173576 DOI: 10.3390/nano14110912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 05/15/2024] [Accepted: 05/19/2024] [Indexed: 06/14/2024]
Abstract
Silver nanoparticles (Ag NPs) have been produced by low-dose (1-20 kGy) gamma irradiation of silver nitrate in the presence of graphene-based material (graphene oxide or electrochemically exfoliated graphene). The large surface area of those graphene-based materials combined with the presence of oxygen-containing functional groups on the surface provided successful nucleation and growth of Ag nanoparticles, which resulted in a uniformly covered graphene surface. The obtained Ag nanoparticles were spherical with a predominant size distribution of 10-50 nm for graphene oxide and 10-100 nm for electrochemically exfoliated graphene. The photothermal efficiency measurement showed a temperature increase upon exposure to a 532 nm laser for all samples and the highest photothermal efficiency was measured for the graphene oxide/Ag NP sample prepared at 5 kGy. Electromagnetic interference (EMI) shielding efficiency measurements showed poor shielding for the composites prepared with graphene oxide. On the other hand, all composites prepared with electrochemically exfoliated graphene showed EMI shielding to some extent, and the best performance was measured for the samples prepared at 5 and 20 kGy doses.
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Affiliation(s)
- Andjela Stefanović
- Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Dejan Kepić
- Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - Miloš Momčilović
- Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - James L. Mead
- Department of Computing Science, University of Oldenburg, D-26129 Oldenburg, Germany
| | - Miroslav Huskić
- Faculty of Polymer Technology, Ozare 19, 2380 Slovenj Gradec, Slovenia
| | - Kamel Haddadi
- University of Lille, CNRS, University Polytechnique Hauts-de-France, UMR 8520-IEMN-Institut d’électronique de microélectronique et de nanotechnologie, F-59000 Lille, France; (K.H.)
| | - Mohamed Sebbache
- University of Lille, CNRS, University Polytechnique Hauts-de-France, UMR 8520-IEMN-Institut d’électronique de microélectronique et de nanotechnologie, F-59000 Lille, France; (K.H.)
| | - Biljana Todorović Marković
- Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - Svetlana Jovanović
- Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
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2
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Singh A, Gautam A, Banerjee S, Singh A, Kushwaha HR. Synthesis of copper-reduced graphene oxide nanomaterials using glucose and study of its antibacterial and anticancer activities. Biomed Mater 2023; 18:065025. [PMID: 37820688 DOI: 10.1088/1748-605x/ad0274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/11/2023] [Indexed: 10/13/2023]
Abstract
In this work, glucose-capped copper nanoparticles decorated reduced graphene oxide nanomaterial are synthesized at 100 °C and 200 °C via chemical reduction method and studied for their antibacterial and anticancer activities. Synthesized nanomaterials were characterized using x-ray diffraction, Fourier-transform infrared, transmission electron microscope, and RAMAN. It is observed in transmission electron microscopy and selected area electron diffraction studies that copper nanoparticles deposited onto reduced graphene oxide are smaller than nanoparticles generated in the absence of reduced graphene oxide. Also, the size of copper nanoparticles synthesized at 200 °C is smaller than at 100 °C. Results suggest that Cu/Glu/rGO synthesized at both temperatures showed significant antibacterial activity againstEscherichia coliandBacillus anthracis,similarly, showed significant cell death in cancer cell lines [Cal33 and HCT-116 p53 (+/+)]. Interestingly, the nanomaterials were seen to be more effective against the cancer cell lines harboring aggregating mutant p53. Tumors with aggregating mutants of p53 are difficult to treat hence, Cu/Glu/rGO can be promising therapeutic agents against these difficult cancers. However, the antibacterial and anticancer activity of Cu/Glu/rGO synthesized at 100 °C where Cu2O form is obtained was found to be more effective compared to Cu/Glu/rGO synthesized at 200 °C where Cu form is obtained. Though fine-tuning of the material may be required for its commercial applications.
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Affiliation(s)
- Anu Singh
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Akanksha Gautam
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Sagarika Banerjee
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Awantika Singh
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Hemant R Kushwaha
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi 110067, India
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3
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Kepić DP, Stefanović AM, Budimir MD, Pavlović VB, Bonasera A, Scopelliti M, Todorović-Marković BM. Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2022.110545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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4
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Zabierowski P, Osička J, Šťastný J, Filip J. Imprinting of different types of graphene oxide with metal cations. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Festinger N, Kisielewska A, Burnat B, Ranoszek-Soliwoda K, Grobelny J, Koszelska K, Guziejewski D, Smarzewska S. The Influence of Graphene Oxide Composition on Properties of Surface-Modified Metal Electrodes. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15217684. [PMID: 36363278 PMCID: PMC9654030 DOI: 10.3390/ma15217684] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 05/20/2023]
Abstract
The present paper describes the effect of the concentration of two graphene oxides (with different oxygen content) in the modifier layer on the electrochemical and structural properties of noble metal disk electrodes used as working electrodes in voltammetry. The chemistry of graphene oxides was tested using EDS, FTIR, UV-Vis spectroscopy, and combustion analysis. The structural properties of the obtained modifier layers were examined by means of scanning electron and atomic force microscopy. Cyclic voltammetry was employed for comparative electrochemical studies.
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Affiliation(s)
- Natalia Festinger
- Łukasiewicz Research Network-Lodz Institute of Technology, Maria Skłodowska-Curie 19/27, 90-570 Lodz, Poland
| | - Aneta Kisielewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
| | - Barbara Burnat
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland
| | - Katarzyna Ranoszek-Soliwoda
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
| | - Jarosław Grobelny
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
| | - Kamila Koszelska
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland
| | - Dariusz Guziejewski
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland
| | - Sylwia Smarzewska
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland
- Correspondence:
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Mechanisms of NO 2 Detection in Hybrid Structures Containing Reduced Graphene Oxide: A Review. SENSORS 2022; 22:s22145316. [PMID: 35890996 PMCID: PMC9324878 DOI: 10.3390/s22145316] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 12/10/2022]
Abstract
The sensitive detection of harmful gases, in particular nitrogen dioxide, is very important for our health and environment protection. Therefore, many papers on sensor materials used for NO2 detection have been published in recent years. Materials based on graphene and reduced graphene oxide deserve special attention, as they exhibit excellent sensor properties compared to the other materials. In this paper, we present the most recent advances in rGO hybrid materials developed for NO2 detection. We discuss their properties and, in particular, the mechanism of their interaction with NO2. We also present current problems occuring in this field.
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Biswas HS, Bala S, Kundu AK, Saha I, Poddar S, Sarkar S, Mandal P. Tuned synthesis and designed characterization of graphene oxide thin film. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Deshmukh AR, Dikshit PK, Kim BS. Green in situ immobilization of gold and silver nanoparticles on bacterial nanocellulose film using Punica granatum peels extract and their application as reusable catalysts. Int J Biol Macromol 2022; 205:169-177. [PMID: 35181323 DOI: 10.1016/j.ijbiomac.2022.02.064] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/27/2022] [Accepted: 02/12/2022] [Indexed: 12/18/2022]
Abstract
In this study, Punica granatum peels extract induced in situ deposition was applied to prepare Au and Ag nanoparticles on bacterial nanocellulose film. Bacterial nanocellulose provided as an eco-friendly and excellent support for the interaction of P. granatum peel biomolecules and further reduction of Au and Ag ions. Meanwhile, a possible in situ growth mechanism of Au and Ag on bacterial cellulose by P. granatum peel extract biomolecules was presented. Further, the metal nanoparticles incorporated bacterial cellulose films were used to catalyze the reduction of 4-nitrophenol. The results of the present study indicated excellent catalytic reduction properties of Au and Ag nanocellulose films for 4 consecutive cycles. In addition, Au and Ag incorporated cellulose nanofiber films exhibited superior antioxidant activity and improved mechanical properties compared to pristine cellulose nanofiber film. The findings of this study may provide new insights and broad application of bacterial cellulose and green synthesis method for the development of various metal-cellulose composites.
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Affiliation(s)
- Aarti R Deshmukh
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Pritam Kumar Dikshit
- Department of Biotechnology, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur 522502, Andhra Pradesh, India
| | - Beom Soo Kim
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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9
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One-Step Formation of Reduced Graphene Oxide from Insulating Polymers Induced by Laser Writing Method. CRYSTALS 2021. [DOI: 10.3390/cryst11111308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Finding a low-cost and effective method at low temperatures for producing reduced graphene oxide (rGO) has been the focus of many efforts in the research community for almost two decades. Overall, rGO is a promising candidate for use in supercapacitors, batteries, biosensors, photovoltaic devices, corrosion inhibitors, and optical devices. Herein, we report the formation of rGO from two electrically insulating polymers, polytetrafluoroethylene (PTFE) and meta-polybenzimidazole fiber (m-PBI), using an excimer pulsed laser annealing (PLA) method. The results from X-ray diffraction, scanning electron microscopy, electron backscattered diffraction, Raman spectroscopy, and Fourier-transform infrared spectroscopy confirm the successful generation of rGO with the formation of a multilayered structure. We investigated the mechanisms for the transformation of PTFE and PBI into rGO. The PTFE transition occurs by both a photochemical mechanism and a photothermal mechanism. The transition of PBI is dominated by a photo-oxidation mechanism and stepwise thermal degradation. After degradation and degassing procedures, both the polymers leave behind free molten carbon with some oxygen and hydrogen content. The free molten carbon undergoes an undercooling process with a regrowth velocity (<4 m·s−1) that is necessary for the formation of rGO structures. This approach has the potential for use in creating future selective polymer-written electronics.
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Das P, Tantubay K, Ghosh R, Dam S, Baskey Sen M. Transformation of CuS/ZnS nanomaterials to an efficient visible light photocatalyst by 'photosensitizer' graphene and the potential antimicrobial activities of the nanocomposites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:49125-49138. [PMID: 33932204 DOI: 10.1007/s11356-021-14068-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
We report the growth of CuS/ZnS (CZS) nanoparticles (NPs) on the graphene sheet by a facile green synthesis process. The CuS/ZnS-graphene (CZSG) nanocomposites exhibit enhanced visible light photocatalytic activity towards organic dye (methylene blue) degradation than that of CZS nanoparticles. To find the reason for the enhanced photo-activity, we propose a new photocatalytic mechanism where graphene in the CZSG nanocomposites acts as a 'photosensitizer' for CZS nanoparticles. This distinctive photocatalytic mechanism is noticeably different from all other previous research works on semiconductor-graphene hybrid photocatalysts where graphene behaves as an electron reservoir to capture the electrons from photo-excited semiconductor. This novel idea of the photocatalytic mechanism in semiconductor-graphene photocatalysts could draw a new track in thinking for designing of graphene-based photocatalysts for solving environmental pollution problems and they also show remarkable antimicrobial activities.
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Affiliation(s)
- Piu Das
- Materials Research Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India
| | - Kartik Tantubay
- Materials Research Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India
| | - Raktim Ghosh
- Department of Microbiology, The University of Burdwan, Burdwan, West Bengal, 713104, India
| | - Somasri Dam
- Department of Microbiology, The University of Burdwan, Burdwan, West Bengal, 713104, India
| | - Moni Baskey Sen
- Materials Research Laboratory, Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, 713104, India.
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11
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Yang Y, Xu L, Shen H, Wang J. Construction of three-dimensional reduced graphene oxide wrapped nZVI doped with Al 2O 3 as the ternary Fenton-like catalyst: Optimization, characterization and catalytic mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146576. [PMID: 33765472 DOI: 10.1016/j.scitotenv.2021.146576] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/14/2021] [Accepted: 03/14/2021] [Indexed: 06/12/2023]
Abstract
The rational design and synthesis of novel nanocomposites as effective heterogeneous catalysts is meaningful for the advances in Fenton-like technology. Herein, multiple variants of three-dimensional reduced graphene oxide wrapped nZVI doped with Al2O3 (3D-RGO@nZVI/Al2O3) were prepared by three different self-assembly methods. The composites were characterized by field emission scanning electron microscopy, nitrogen adsorption/desorption isotherms, Raman spectrum analysis, X-ray diffraction, and X-ray photoelectron spectroscopy. A series of experiments on chloramphenicol degradation at different pH values were employed to evaluate the catalytic properties of the prepared catalysts. With the systematical investigation of their morphologies, chemical components and catalytic performance, the optimal 3D-RGO@nZVI/Al2O3 catalyst was synthesized, which was favorable for inducing the Fenton-like reaction by activation of dissolved oxygen (DO) within a wide pH range. The anchored nZVI particles were the main active sites for catalytic oxidation, and doped Al3+ played a major role in buffering the pH of CAP solution. Electron spin resonance spectroscopy revealed the existence of the superoxide radicals (·O2-) and singlet oxygen (1O2), which provides a new insight into the reaction mechanism of reactive oxygen species in the Fenton-like system. This work is an essential effort to explore the promoting effect of synthesis methods on the catalytic behavior of catalysts, and to further study the Fenton-like reaction triggered by DO activation.
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Affiliation(s)
- Yujia Yang
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Lejin Xu
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| | - Huiyi Shen
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET and Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, PR China
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12
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Spilarewicz-Stanek K, Jakimińska A, Kisielewska A, Batory D, Piwoński I. Understanding the Role of Silver Nanostructures and Graphene Oxide Applied as Surface Modification of TiO 2 in Photocatalytic Transformations of Rhodamine B under UV and Vis Irradiation. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4653. [PMID: 33086525 PMCID: PMC7603215 DOI: 10.3390/ma13204653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 11/16/2022]
Abstract
This work is focused on photocatalytic properties of titanium dioxide thin coatings modified with silver nanostructures (AgNSs) and graphene oxide (GO) sheets which were analyzed in processes of chemical transformations of rhodamine B (RhB) under ultraviolet (UV) or visible light (Vis) irradiation, respectively. UV-Vis spectroscopy was applied to analyze the changes in the RhB spectrum during photocatalytic processes, revealing decolorization of RhB solution under UV irradiation while the same process coexisting with the transformation of RhB to rhodamine 110 was observed under Vis irradiation. The novelty of this study is the elaboration of a methodology for determining the parameters characterizing the processes occurring under the Vis irradiation, which enables the comparison of photocatalysts' activity. For the first time, the method for quantification of rhodamine B transformation into rhodamine 110 in the presence of a semiconductor under visible light irradiation was proposed. Photocatalysts with various surface architectures were designed. TiO2 thin coatings were obtained by the sol-gel method. GO sheets were deposited on their surface using the dip-coating method. AgNSs were photogenerated on TiO2 or grown spontaneously on GO flakes. For characterization of obtained photocatalysts, scanning electron microscopy (SEM), X-ray diffraction (XRD) and diffuse-reflectance spectroscopy (DRS) techniques were applied. The results indicate that the surface architecture of prepared coatings does not affect the main reaction path but have an influence on the reaction rates and yields of observed processes.
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Affiliation(s)
- Kaja Spilarewicz-Stanek
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
| | - Anna Jakimińska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Aneta Kisielewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
| | - Damian Batory
- Department of Vehicles and Fundamentals in Machine Design, Lodz University of Technology, Stefanowskiego 1/15, 90-924 Lodz, Poland
| | - Ireneusz Piwoński
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236 Lodz, Poland
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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.
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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
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Electrochemical Sodium Ion Sensor Based on Silver Nanoparticles/Graphene Oxide Nanocomposite for Food Application. CHEMOSENSORS 2020. [DOI: 10.3390/chemosensors8030058] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
High sodium ion (Na+) consumption leads to high blood pressure which causes many health issues. Real-time determination of Na+ content in food is still important to limit Na+ intake and control the taste of food. In this work, we have developed an electrochemical sensor based on agglomeration of silver nanoparticles (AgNPs) and graphene oxide (GO) modified on a screen-printed silver electrode (SPE) for Na+ detection at room temperature by using cyclic voltammetry (CV). The AgNPs were synthesized through a simple green route using Pistia stratiotes extract as a reducing agent under blue light illumination and mixed with the GO to be a Na+ selective sensing nanocomposite. The AgNPs/GO/SPE sensor showed high sensitivity (0.269 mA/mM/cm2), high selectivity, linear relationship (0–100 mM), good stability, and excellent reproducibility to Na+ detection as well as low limit of detection (9.344 mM) for food application. The interfering species such as K+, Zn2+, Na+, Mg2+, glucose, and ascorbic acid did not have any influence on the Na+ determination. The AgNPs/GO/SPE sensor was successfully applied to determine Na+ in real samples such as fish sauce and seasoning powder of instant noodle.
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15
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Yang S, Tan M, Yu T, Li X, Wang X, Zhang J. Hybrid Reduced Graphene Oxide with Special Magnetoresistance for Wireless Magnetic Field Sensor. NANO-MICRO LETTERS 2020; 12:69. [PMID: 34138286 PMCID: PMC7770704 DOI: 10.1007/s40820-020-0403-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 02/02/2020] [Indexed: 06/12/2023]
Abstract
Very few materials show large magnetoresistance (MR) under a low magnetic field at room temperature, which causes the barrier to the development of magnetic field sensors for detecting low-level electromagnetic radiation in real- time. Here, a hybrid reduced graphene oxide (rGO)-based magnetic field sensor is produced by in situ deposition of FeCo nanoparticles (NPs) on reduced graphene oxide (rGO). Special quantum magnetoresistance (MR) of the hybrid rGO is observed, which unveils that Abrikosov's quantum model for layered materials can occur in hybrid rGO; meanwhile, the MR value can be tunable by adjusting the particle density of FeCo NPs on rGO nanosheets. Very high MR value up to 21.02 ± 5.74% at 10 kOe at room temperature is achieved, and the average increasing rate of resistance per kOe is up to 0.9282 Ω kOe-1. In this paper, we demonstrate that the hybrid rGO-based magnetic field sensor can be embedded in a wireless system for real-time detection of low-level electromagnetic radiation caused by a working mobile phone. We believe that the two-dimensional nanomaterials with controllable MR can be integrated with a wireless system for the future connected society.
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Affiliation(s)
- Songlin Yang
- Department of Chemical and Biochemical Engineering, Western University, 1151 Richmond St., London, ON, N6A 5B9, Canada
| | - Mingyan Tan
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Fusionopolis Way, #08-03, Innovis, Singapore, 138634, Singapore
| | - Tianqi Yu
- Department of Electrical and Computer Engineering, Western University, 1151 Richmond St., London, ON, N6A 5B9, Canada
| | - Xu Li
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Fusionopolis Way, #08-03, Innovis, Singapore, 138634, Singapore
| | - Xianbin Wang
- Department of Electrical and Computer Engineering, Western University, 1151 Richmond St., London, ON, N6A 5B9, Canada
| | - Jin Zhang
- Department of Chemical and Biochemical Engineering, Western University, 1151 Richmond St., London, ON, N6A 5B9, Canada.
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Filip J, Wechsler P, Stastny J, Malkova V, Minarik A, Vinter S, Osicka J. Simplified synthesis of silver nanoparticles on graphene oxide and their applications in electrocatalysis. NANOTECHNOLOGY 2020; 32:025502. [PMID: 32932247 DOI: 10.1088/1361-6528/abb8a4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work the possibility of synthesizing in situ silver nanoparticles (AgNPs) on graphene oxide (GO) surfaces without commonly used additional reducing or alkalizing agents or increased temperature was investigated. Using diverse microscopic (atomic force microscopy, transmission electron microscopy) and spectroscopic methods, it was proved that very small AgNPs were formed on GO by simple incubation for 2 h in a mixture of GO dispersion and AgNO3. The prepared nanomaterial (GO_Ag) was also assessed using electrochemical methods, and it exhibited electrochemical behavior similar to the GO_Ag nanomaterial prepared with a help of citric acid as a reducing agent. Furthermore, it was found that (i) the electrochemical reduction of the GO_Ag on the electrode surface decreased the voltammetric response even though this step increased the surface conductivity and (ii) GO_Ag can be employed for the sensing of chlorides with a detection limit of 79 μM and a linear range of up to 10 mM. It could also provide an electrochemical response toward the chloroacetanilide herbicide metazachlor. Hence, the reducing capabilities of GO were proved to be applicable for in situ synthesis of metal nanoparticles with the highest possible simplification, and the as-prepared nanomaterials could be employed for fabrication of different electrochemical sensors.
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Affiliation(s)
- Jaroslav Filip
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, Zlín 76001, Czech Republic
| | - Philipp Wechsler
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, CH-8093, Zürich, Switzerland
| | - Josef Stastny
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, Zlín 76001, Czech Republic
| | - Veronika Malkova
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, Zlín 76001, Czech Republic
| | - Antonin Minarik
- Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 76001 Zlín, Czech Republic
- Centre of Polymer Systems, Tomas Bata University in Zlín, Třída Tomáše Bati 5678, 76001 Zlín, Czech Republic
| | - Stepan Vinter
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, Zlín 76001, Czech Republic
| | - Josef Osicka
- Centre of Polymer Systems, Tomas Bata University in Zlín, Třída Tomáše Bati 5678, 76001 Zlín, Czech Republic
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17
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Siong VLE, Tai XH, Lee KM, Juan JC, Lai CW. Unveiling the enhanced photoelectrochemical and photocatalytic properties of reduced graphene oxide for photodegradation of methylene blue dye. RSC Adv 2020; 10:37905-37915. [PMID: 35515183 PMCID: PMC9057187 DOI: 10.1039/d0ra06703b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/07/2020] [Indexed: 02/04/2023] Open
Abstract
Graphene oxide (GO) and reduced graphene oxide (rGO) can act as metal-free photocatalysts to remove aqueous dye pollutants under light illumination. However, there is some disparity in past reports on the origin of the photoactivity of GO and rGO for photodegradation of dye pollutants. In this work, the photoactivity of GO and rGO for methylene blue (MB) dye photodegradation were investigated with photoelectrochemical (PEC) measurements. The optimized rGO sample (G-2) exhibited a stable photocatalytic rate, which was 2.5 times higher than that of pure GO. PEC measurements revealed that the photocatalytic activity of G-2 was elevated due to higher photocurrent density, higher charge carrier density, and better charge separation. The changes in band gap and band positions of rGO were determined through optical characterization and Mott–Schottky (M–S) plots. Finally, the photocatalytic degradation mechanism of GO and rGO on MB dye was determined. Photoactivity of graphene oxide (GO) was enhanced after reduction, this is due to improved photoelectrochemical properties.![]()
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Affiliation(s)
- Valerie Ling Er Siong
- Nanotechnology & Catalysis Research Centre (NANOCAT)
- Institute for Advanced Studies (IAS)
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Xin Hong Tai
- Nanotechnology & Catalysis Research Centre (NANOCAT)
- Institute for Advanced Studies (IAS)
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Kian Mun Lee
- Nanotechnology & Catalysis Research Centre (NANOCAT)
- Institute for Advanced Studies (IAS)
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Joon Ching Juan
- Nanotechnology & Catalysis Research Centre (NANOCAT)
- Institute for Advanced Studies (IAS)
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Centre (NANOCAT)
- Institute for Advanced Studies (IAS)
- University of Malaya
- Kuala Lumpur
- Malaysia
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18
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Sahoo G, Polaki SR, Anees P, Ghosh S, Dhara S, Kamruddin M. Insights into the electrochemical capacitor performance of transition metal-vertical graphene nanosheet hybrid electrodes. Phys Chem Chem Phys 2019; 21:25196-25205. [PMID: 31696882 DOI: 10.1039/c9cp05656d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Vertical graphene nanosheets (VGN) are envisioned as supercapacitor (SC) electrode materials due to their distinct geometry and remarkable properties. Of late, the hybrid structures of graphene-transition metal (TM) or oxides were found to exhibit enhanced charge storage capacity. Herein, we report the charge storage performance of VGN-transition metal nanoparticle (Au, Ag, Cu, and Ni) hybrid electrodes. Amongst them, Ni-decorated VGN exhibited the highest enhancement, up to 3.04 mF cm-2 (121.6 F g-1) compared to 0.16 mF cm-2 (6.4 F g-1) for as-grown VGN. Further, this was corroborated by the improved electrical as well as ionic conductivity of the metal-decorated VGN structures. Additionally, the presence of metal-oxygen-carbon bonding ensured a contribution of pseudocapacitance. Ab initio calculations elucidated the extent as well as the nature of charge (e-) transfer in TM nanoparticle-VGN hybrid structures. These findings are well corroborated with the charge storage performance. A combined effect from charge transfer and pseudocapacitance on the charge storage performance of TM nanoparticle-VGN hybrid electrodes is demonstrated. A symmetric coin-cell supercapacitor device using Ni/VGN electrodes was fabricated and the sustained performance tested over 10 000 charge-discharge cycles.
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Affiliation(s)
- Gopinath Sahoo
- Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India.
| | - S R Polaki
- Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India.
| | - P Anees
- Materials Physics Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India
| | - Subrata Ghosh
- Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India.
| | - Sandip Dhara
- Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India.
| | - M Kamruddin
- Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India.
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19
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Zhang R, Wang Y, Ma D, Ahmed S, Qin W, Liu Y. Effects of ultrasonication duration and graphene oxide and nano-zinc oxide contents on the properties of polyvinyl alcohol nanocomposites. ULTRASONICS SONOCHEMISTRY 2019; 59:104731. [PMID: 31442767 DOI: 10.1016/j.ultsonch.2019.104731] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/25/2019] [Accepted: 08/11/2019] [Indexed: 05/04/2023]
Abstract
Nanofibrous composite membranes consisting of polyvinyl alcohol (PVA), graphene oxide (GO), and zinc oxide nanoparticles (ZnO NPs) were prepared by and ultrasonic processing, and electrospinning. The performance of the membranes containing different GO-to-ZnO NP mass ratios was comprehensively investigated in terms of density, mechanical properties, water vapor permeability, optical property, biodegradability and antimicrobial properties. The results showed that an appropriate sonication time (30 min) improved the membrane performance; the composite nanofibrous membrane with a GO-to-ZnO NP mass ratio of 3:7 and 30 min sonication exhibited the best performance with a water vapor permeability of (0.62 ± 0.01) × 10-2 g·h-1 m-2 pa-1, and strain and stress values of 307.84 ± 2.96% and 12.82 ± 0.56 MPa, respectively. Particularly, the UV barrier property of the composite nanofibrous membrane was enhanced. Furthermore, the membrane exhibited strong antibacterial activity against foodborne pathogenic and spoilage bacteria. Thu, it can thus be used as an active food packaging material to ensure the safety of food products and to extend their shelf-life.
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Affiliation(s)
- Rong Zhang
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Yihao Wang
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Donghui Ma
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Saeed Ahmed
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Yaowen Liu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.
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20
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Mirzajani R, Karimi S. Ultrasonic assisted synthesis of magnetic Ni-Ag bimetallic nanoparticles supported on reduced graphene oxide for sonochemical simultaneous removal of sunset yellow and tartrazine dyes by response surface optimization: Application of derivative spectrophotometry. ULTRASONICS SONOCHEMISTRY 2019; 50:239-250. [PMID: 30274892 DOI: 10.1016/j.ultsonch.2018.09.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 08/22/2018] [Accepted: 09/18/2018] [Indexed: 06/08/2023]
Abstract
The magnetic Ni-Ag bimetallic nanoparticles supported on reduced graphene oxide (Ni-Ag NPs/rGO) was synthesized and characterized by transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), field emission scanning electron microscopy (FE-SEM) and vibrating sample magnetometer (VSM). Subsequently, this magnetic hybrid material as a novel adsorbent was applied for the sonochemical simultaneous removal of sunset yellow and tartrazine dyes in combination with first-order derivative spectrophotometric method to resolve the overlap between the spectra of these dyes. With magnetic properties, the adsorbent could easily be collected from aqueous solution using an external magnetic field. The parameters including initial concentration of each dye, adsorbent dosage and sonication time were studied by Box-Behnken design (BBD) and response surface methodology (RSM), while pH was studied by one-at-a-time approach. According to Box-Behnken design based on desirability function (DF), the best experimental conditions was set as initial sunset yellow concentration 10 mgL-1, initial tartrazine concentration 8.5 mgL-1, adsorbent dosage 0.045 g and sonication time of 15 min. The equilibrium data was fitted to different isotherm models and the results revealed the suitability of the Langmuir model. The maximum sorption capacity calculated from the Langmuir model was 28.57 and 26.31 mg g-1 for sunset yellow and tartrazine, respectively. Kinetic data revealed that the adsorption process followed a pseudo-second-order model. The reusability of the magnetite nanoparticles revealed about 8% decrease in the removal efficiency within four consecutive runs.
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Affiliation(s)
- Roya Mirzajani
- Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Somayeh Karimi
- Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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21
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Siong VLE, Lee KM, Juan JC, Lai CW, Tai XH, Khe CS. Removal of methylene blue dye by solvothermally reduced graphene oxide: a metal-free adsorption and photodegradation method. RSC Adv 2019; 9:37686-37695. [PMID: 35542257 PMCID: PMC9075724 DOI: 10.1039/c9ra05793e] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 11/12/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, reduced graphene oxide (rGO) was fabricated at different reduction temperatures via an environmentally friendly solvothermal approach. The rGO formed at 160 °C clearly showed the partial restoration of the sp2 hybridization brought about by the elimination of oxygenated functionalities from the surface. Owing to the augmented surface area and the band gap reduction, rGO-160 exhibited the best adsorption (29.26%) and photocatalytic activity (32.68%) towards the removal of MB dye. The effects of catalyst loading, initial concentration of dye, light intensity, and initial pH of solution were evaluated. It was demonstrated that rGO-160 could achieve a higher adsorptive removal (87.39%) and photocatalytic degradation (98.57%) of MB dye when 60 mg of catalyst, 50 ppm of dye at pH 11, and 60 W m−2 of UV-C light source were used. The MB photodegradation activity of rGO-160 displayed no obvious decrease after five successive cycles. This study provides a potential metal-free adsorbent-cum-photocatalyst for the decontamination of dyes from wastewater. A metal-free MB dye removal process was carried out by solvothermally synthesized rGO. After optimization, near-complete dye removal was achieved via an adsorption and UV photodegradation route.![]()
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Affiliation(s)
- Valerie Ling Er Siong
- Nanotechnology & Catalysis Research Centre
- Institute for Advanced Studies
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Kian Mun Lee
- Nanotechnology & Catalysis Research Centre
- Institute for Advanced Studies
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Joon Ching Juan
- Nanotechnology & Catalysis Research Centre
- Institute for Advanced Studies
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Centre
- Institute for Advanced Studies
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Xin Hong Tai
- Nanotechnology & Catalysis Research Centre
- Institute for Advanced Studies
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Cheng Seong Khe
- Department of Fundamental and Applied Sciences
- Universiti Teknologi PETRONAS
- Malaysia
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22
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Jeong H, Nguyen DM, Lee MS, Kim HG, Ko SC, Kwac LK. N-doped graphene-carbon nanotube hybrid networks attaching with gold nanoparticles for glucose non-enzymatic sensor. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 90:38-45. [PMID: 29853104 DOI: 10.1016/j.msec.2018.04.039] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 02/21/2018] [Accepted: 04/15/2018] [Indexed: 01/22/2023]
Abstract
Herein, we successfully developed a novel three dimensional (3D) opened networks based on nitrogen doped graphene‑carbon nanotubes attaching with gold nanoparticles (N-GR-CNTs/AuNPs) to apply for non-enzymatic glucose determination. It was demonstrated that the N-GR-CNTs/AuNPs modified electrode exhibited good behavior for glucose detection with a long linear range of 2 μM to 19.6 mM, high sensitivity of 0.9824 μA·mM-1·cm-2, low detection limit of 500 nM, and negligible interference effect. The high performance of the N-GR-CNTs/AuNPs based sensor was assumed due to the outstanding catalytic activity of AuNPs well dispersing on N-GR-CNTs networks, which exhibited as a perfect supporting scaffold due to the enhanced electrical conductivity and large surface area. The obtained results indicated that the N-GR-CNTs/AuNPs hybrid is highly promising for sensitive and selective detection of glucose in sensor application.
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Affiliation(s)
- Hun Jeong
- Institute of Carbon Technology, Jeonju University, Jeonju, Jeonbuk 55069, Republic of Korea.
| | - Dang Mao Nguyen
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LOCIE, 73000 Chambéry, France; Department of Polymer and Composite Materials, Faculty of Material Science, University of Science, Vietnam National University Ho Chi Minh city (VNU), Vietnam
| | - Min Sang Lee
- Institute of Carbon Technology, Jeonju University, Jeonju, Jeonbuk 55069, Republic of Korea
| | - Hong Gun Kim
- Institute of Carbon Technology, Jeonju University, Jeonju, Jeonbuk 55069, Republic of Korea
| | - Sang Cheol Ko
- Institute of Carbon Technology, Jeonju University, Jeonju, Jeonbuk 55069, Republic of Korea
| | - Lee Ku Kwac
- Institute of Carbon Technology, Jeonju University, Jeonju, Jeonbuk 55069, Republic of Korea.
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23
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Sekar P, Calvillo L, Tubaro C, Baron M, Pokle A, Carraro F, Martucci A, Agnoli S. Cobalt Spinel Nanocubes on N-Doped Graphene: A Synergistic Hybrid Electrocatalyst for the Highly Selective Reduction of Carbon Dioxide to Formic Acid. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02166] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Pandiaraj Sekar
- Department
of Chemical Science, University of Padova, Via F. Marzolo 1 35131 Padova, Italy
| | - Laura Calvillo
- Department
of Chemical Science, University of Padova, Via F. Marzolo 1 35131 Padova, Italy
| | - Cristina Tubaro
- Department
of Chemical Science, University of Padova, Via F. Marzolo 1 35131 Padova, Italy
| | - Marco Baron
- Department
of Chemical Science, University of Padova, Via F. Marzolo 1 35131 Padova, Italy
| | - Anuj Pokle
- School
of Physics and CRANN, Trinity College Dublin, Dublin 2, Ireland
| | - Francesco Carraro
- Department
of Chemical Science, University of Padova, Via F. Marzolo 1 35131 Padova, Italy
| | - Alex Martucci
- Department
of Industrial Engineering, University of Padova, via F. Marzolo
9, 35131 Padova, Italy
| | - Stefano Agnoli
- Department
of Chemical Science, University of Padova, Via F. Marzolo 1 35131 Padova, Italy
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24
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Sen MB, Ghosh S. Enhanced sunlight photocatalytic activity of silver nanoparticles decorated on reduced graphene oxide sheet. KOREAN J CHEM ENG 2017. [DOI: 10.1007/s11814-017-0090-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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25
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Jeon JM, Kim TL, Shim YS, Choi YR, Choi S, Lee S, Kwon KC, Hong SH, Kim YW, Kim SY, Kim M, Jang HW. Microscopic Evidence for Strong Interaction between Pd and Graphene Oxide that Results in Metal-Decoration-Induced Reduction of Graphene Oxide. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605929. [PMID: 28117501 DOI: 10.1002/adma.201605929] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/15/2016] [Indexed: 06/06/2023]
Abstract
Graphene oxide (GO) is reduced spontaneously when palladium nanoparticles are decorated on the surface. The oxygen functional groups at the GO surface near the nanoparticles are absorbed to the palladium to produce a palladium oxide interlayer. Palladium therefore grows on the GO with preferred orientations, resulting in unique microstructural and electrical properties.
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Affiliation(s)
- Jong-Myeong Jeon
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Taemin Ludvic Kim
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Young-Seok Shim
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - You Rim Choi
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seokhoon Choi
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seonyong Lee
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ki Chang Kwon
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seong-Hyeon Hong
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Young-Woon Kim
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Soo Young Kim
- School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Miyoung Kim
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
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