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Štular D, de Velde NV, Drinčić A, Kogovšek P, Filipić A, Fric K, Simončič B, Tomšič B, Chouhan RS, Bohm S, Kr. Verma S, Panda PK, Jerman I. Boosting Copper Biocidal Activity by Silver Decoration and Few-Layer Graphene in Coatings on Textile Fibers. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2300113. [PMID: 37829680 PMCID: PMC10566802 DOI: 10.1002/gch2.202300113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/26/2023] [Indexed: 10/14/2023]
Abstract
The outbreak of the Coronavirus disease 2019 (COVID-19) pandemic has highlighted the importance of developing antiviral surface coatings that are capable of repelling pathogens and neutralizing them through self-sanitizing properties. In this study, a novel coating design based on few-layer graphene (FLG) is proposed and silver-decorated micro copper flakes (CuMF) that exhibit both antibacterial and antiviral properties. The role of sacrificial anode surfaces and intrinsic graphene defects in enhancing the release of metal ions from CuMF embedded in water-based binders is investigated. In silico analysis is conducted to better understand the molecular interactions of pathogen-repelling species with bacterial or bacteriophage proteins. The results show that the optimal amount of CuMF/FLG in the coating leads to a significant reduction in bacterial growth, with reductions of 3.17 and 9.81 log for Staphylococcus aureus and Escherichia coli, respectively. The same coating also showed high antiviral efficacy, reducing bacteriophage phi6 by 5.53 log. The antiviral efficiency of the coating is find to be doubled compared to either micro copper flakes or few-layer graphene alone. This novel coating design is versatile and can be applied to various substrates, such as personal protective clothing and face masks, to provide biocidal activity against both bacterial and viral pathogens.
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Affiliation(s)
- Danaja Štular
- National Institute of ChemistryHajdrihova 19Ljubljana1001Slovenia
| | | | - Ana Drinčić
- National Institute of ChemistryHajdrihova 19Ljubljana1001Slovenia
| | - Polona Kogovšek
- National Institute of BiologyVečna pot 111Ljubljana1000Slovenia
| | - Arijana Filipić
- National Institute of BiologyVečna pot 111Ljubljana1000Slovenia
| | - Katja Fric
- National Institute of BiologyVečna pot 111Ljubljana1000Slovenia
| | - Barbara Simončič
- Faculty of Natural Sciences and EngineeringUniversity of LjubljanaAškerčeva 12Ljubljana1000Slovenia
| | - Brigita Tomšič
- Faculty of Natural Sciences and EngineeringUniversity of LjubljanaAškerčeva 12Ljubljana1000Slovenia
| | - Raghuraj S. Chouhan
- Institute “Jožef Stefan”Department of Environmental SciencesJamova 39Ljubljana1000Slovenia
| | - Sivasambu Bohm
- Imperial College LondonSouth Kensington CampusLondonSW7 2AZUK
| | - Suresh Kr. Verma
- Ångströmlaboratoriet Lägerhyddsv1 Box 530Uppsala75121Sweden
- School of BiotechnologyKIIT UniversityBhubaneswar751024India
| | | | - Ivan Jerman
- National Institute of ChemistryHajdrihova 19Ljubljana1001Slovenia
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Dutta D, Jiang JY, Jamaluddin A, He SM, Hung YH, Chen F, Chang JK, Su CY. Nanocatalyst-Assisted Fine Tailoring of Pore Structure in Holey-Graphene for Enhanced Performance in Energy Storage. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36560-36570. [PMID: 31508931 DOI: 10.1021/acsami.9b09927] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoporous holey-graphene (HG) shows potential versatility in several technological fields, especially in biomedical, water filtration, and energy storage applications. Particularly, for ultrahigh electrochemical energy storage applications, HG has shown promise in addressing the issue of low gravimetric and volumetric energy densities by boosting of the ion-transport efficiency in a high-mass-loaded graphene electrode. However, there are no studies showing complete control over the entire pore architecture and density of HG and their effect on high-rate energy storage. Here, we report a unique and cost-effective method for obtaining well-controlled HG, where a copper nanocatalyst assists the predefined porosity tailoring of the HG and leads to an extraordinary high pore density that exceeds 1 × 103 μm-2. The pore architectures of the hierarchical and homogenous pores of HG were realized through a rationally designed nanocatalyst and the annealing procedure in this method. The HG electrode with a high mass loading results in improved supercapacitor performance that is at least 1 order of magnitude higher than conventional graphene flakes (reduced electrochemically exfoliated graphene (rECG)) in areal capacitance (∼100% retention of capacitance until 15 000 cycles), energy density, and power density. The diffusion coefficient of the HG electrode is 1.5-fold higher than that of rECG at a mass loading of 15 mg cm-2, indicating excellent ion-transport efficiency. The excellent ion-transport efficiency of HG is further proved by nearly 4-fold magnitude lowering of its Rion (the ionic resistance in the electrolyte-filled pores) value as compared with rECG when estimated for equivalent high-mass-loaded electrodes. Furthermore, the HG exhibits a packing density that is 2 orders of magnitude higher than rECG, revealing the utility of the maximum electrode mass and possessing higher volumetric capacitance. The perfect tailoring of HG with optimized porosity allows the achievement of high areal capacitance and excellent cycling stability due to the facile ion- and charge-transport at high-mass-loaded electrodes, which could open a new avenue for addressing the long-existing issue of practical application of graphene-based energy storage devices.
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Affiliation(s)
| | | | | | | | | | - Fuming Chen
- School of Physics and Telecommunication Engineering , South China Normal University , Guangzhou 510006 , China
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
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Noh Y, Kim Y, Han H, Jung W, Kim JG, Kim Y, Kim HJ, Kim B, Kim WB. Improved Ion‐Transfer Behavior and Capacitive Energy Storage Characteristics of SnO
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Nanospacer‐Incorporated Reduced Graphene Oxide Electrodes. ChemElectroChem 2019. [DOI: 10.1002/celc.201900543] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuseong Noh
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam-ro, Nam-gu Pohang 37673 Republic of Korea
| | - Yoongon Kim
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam-ro, Nam-gu Pohang 37673 Republic of Korea
| | - Hyunsu Han
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam-ro, Nam-gu Pohang 37673 Republic of Korea
| | - Wan‐Gil Jung
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdangwagi-ro, Buk-gu Gwangju 61005 Republic of Korea
| | - Jong Guk Kim
- Division of Electron Microscopic Research GroupKorea Basic Science Institute (KBSI) 169-148 Gwahak-ro, Yuseong-gu Daejeon 34133 Republic of Korea
| | - Youngmin Kim
- Carbon Resources InstituteKorea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
| | - Hyung Ju Kim
- Carbon Resources InstituteKorea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
| | - Bong‐Joong Kim
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdangwagi-ro, Buk-gu Gwangju 61005 Republic of Korea
| | - Won Bae Kim
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam-ro, Nam-gu Pohang 37673 Republic of Korea
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4
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Singh L, Azad UP, Singh SP, Ganesan V, Rai US, Lee Y. Yttrium Copper Titanate as a Highly Efficient Electrocatalyst for Oxygen Reduction Reaction in Fuel Cells, Synthesized via Ultrafast Automatic Flame Technique. Sci Rep 2017; 7:9407. [PMID: 28839274 PMCID: PMC5571221 DOI: 10.1038/s41598-017-09661-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 07/27/2017] [Indexed: 11/17/2022] Open
Abstract
Replacing platinum (Pt) metal-based electrocatalysts used in the oxygen reduction reaction (ORR) in fuel cells is an important research topic due to the high cost and scarcity of Pt, which have restricted the commercialization of these clean-energy technologies. The ABO3-type perovskite family of an ACu3Ti4O12 (A = Ca, Y, Bi, and La) polycrystalline material can serve as an alternative electrocatalyst for the ORR in terms of low-cost, activity, and stability. These perovskite materials may be considered the next generation electro-catalyst for the ORR because of their photocatalytic activity and physical and chemical properties capable of containing a wide range of A- and B-site metals. This paper reports the ORR activity of a new Y2/3Cu3Ti4O12 perovskite, synthesized via a rapid and facile automatic flame synthesis technique using rotating disk electrode (RDE) measurements. Y2/3Cu3Ti4O12/C has superior ORR activity, stability, and durability compared to commercial Pt/C. The results presented in this article will provide the future perspectives to research based on ACu3Ti4O12 (A = Ca, Y, Bi, Sm, Cd, and La) perovskite as the next generation electro-catalyst for the ORR in various electrochemical devices, such as fuel cells, metal–air batteries, and electrolysis.
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Affiliation(s)
- Laxman Singh
- Department of Chemistry, University of Ulsan, 93 Daehak-ro Nam-gu, Ulsan, 44610, Republic of Korea
| | - Uday Pratap Azad
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Satendra Pal Singh
- Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Vellaichamy Ganesan
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - U S Rai
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Youngil Lee
- Department of Chemistry, University of Ulsan, 93 Daehak-ro Nam-gu, Ulsan, 44610, Republic of Korea.
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He D, Tang H, Kou Z, Pan M, Sun X, Zhang J, Mu S. Engineered Graphene Materials: Synthesis and Applications for Polymer Electrolyte Membrane Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1601741. [PMID: 27996174 DOI: 10.1002/adma.201601741] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 10/15/2016] [Indexed: 06/06/2023]
Abstract
Engineered graphene materials (EGMs) with unique structures and properties have been incorporated into various components of polymer electrolyte membrane fuel cells (PEMFCs) such as electrode, membrane, and bipolar plates to achieve enhanced performances in terms of electrical conductivity, mechanical durability, corrosion resistance, and electrochemical surface area. This research news article provides an overview of the recent development in EGMs and EGM-based PEMFCs with a focus on the effects of EGMs on PEMFC performance when they are incorporated into different components of PEMFCs. The challenges of EGMs for practical PEMFC applications in terms of production scale, stability, conductivity, and coupling capability with other materials are also discussed and the corresponding measures and future research trends to overcome such challenges are proposed.
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Affiliation(s)
- Daping He
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Haolin Tang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Zongkui Kou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Mu Pan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Xueliang Sun
- Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Jiujun Zhang
- Energy, Mining and Enviromment, National Research Council of Canada Vancouver, Canada
| | - Shichun Mu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
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Structural, electronic, and electrochemical analyses of sputter-coated Pt and Pt–Co/GCE electrodes with ultra-low metal loadings for PEM fuel cell applications. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-1021-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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