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Martins VN, da Silva MM, Gonçalves DA, Presser V, Husmann S, Souza VHR. Freestanding Films of Reduced Graphene Oxide Fully Decorated with Prussian Blue Nanoparticles for Hydrogen Peroxide Sensing. ACS OMEGA 2024; 9:31569-31577. [PMID: 39072102 PMCID: PMC11270561 DOI: 10.1021/acsomega.4c01457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/20/2024] [Accepted: 06/26/2024] [Indexed: 07/30/2024]
Abstract
Developing thin, freestanding electrodes that work simultaneously as a current collector and electroactive material is pivotal to integrating portable and wearable chemical sensors. Herein, we have synthesized graphene/Prussian blue (PB) electrodes for hydrogen peroxide detection (H2O2) using a two-step method. First, an reduced graphene oxide/PAni/Fe2O3 freestanding film is prepared using a doctor blade technique, followed by the electrochemical deposition of PB nanoparticles over the films. The iron oxide nanoparticles work as the iron source for the heterogeneous electrochemical deposition of the nanoparticles in a ferricyanide solution. The size of the PB cubes electrodeposited over the graphene-based electrodes was controlled by the number of voltammetric cycles. For H2O2 sensing, the PB10 electrode achieved the lowest detection and quantification limits, 2.00 and 7.00 μM, respectively. The findings herein evidence the balance between the structure of the graphene/PB-based electrodes with the electrochemical performance for H2O2 detection and pave the path for developing new freestanding electrodes for chemical sensors.
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Affiliation(s)
- Vitor
H. N. Martins
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Monize M. da Silva
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Daniel A. Gonçalves
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Volker Presser
- INM—Leibniz
Institute for New Materials, Campus D2-2, 66123 Saarbrücken, Germany
- Department
of Materials Science & Engineering, Saarland University, Campus D2 2, 66123 Saarbrücken, Germany
- Saarene—Saarland
Center for Energy Materials and Sustainability, Campus C4 2, 66123 Saarbrücken, Germany
| | - Samantha Husmann
- INM—Leibniz
Institute for New Materials, Campus D2-2, 66123 Saarbrücken, Germany
| | - Victor H. R. Souza
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
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Ma KY, Kim H, Hwang H, Jeong DS, Lee HJ, Cho K, Yang J, Jeong HY, Shin HS. Enhanced Long-Term Stability of Crystalline Nickel-Boride (Ni 23B 6) Electrocatalyst by Encapsulation with Hexagonal Boron Nitride. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2403674. [PMID: 38995107 DOI: 10.1002/advs.202403674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/11/2024] [Indexed: 07/13/2024]
Abstract
Nickel boride catalysts show great potential as low-cost and efficient alternatives to noble-metal catalysts in acidic media; however, synthesizing and isolating a specific phase and composition of nickel boride is nontrivial, and issues persist in their long-term stability as electrocatalysts. Here, a single-crystal nickel boride, Ni23B6, is reported which exhibits high electrocatalytic activity for the hydrogen evolution reaction (HER) in an acidic solution, and that its poor long-term stability can be overcome via encapsulation by single-crystal trilayer hexagonal boron nitride (hBN) film. Interestingly, hBN-covered Ni23B6 on a Ni substrate shows an identical overpotential of 52 mV at a current density of 10 mA cm-2 to that of bare Ni23B6. This phenomenon indicates that the single-crystalline hBN layer is catalytically transparent and does not obstruct HER activation. The hBN/Ni23B6/Ni has remarkable long-term stability with negligible changes to its polarization curves for 2000 cycles, whereas the Ni23B6/Ni shows significant degradation after 650 cycles. Furthermore, chronoamperometric measurements indicate that stability is preserved for >20 h. Long-term stability tests also reveal that the surface morphology and chemical structure of the hBN/Ni23B6/Ni electrode remain preserved. This work provides a model for the practical design of robust and durable electrochemical catalysts through the use of hBN encapsulation.
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Affiliation(s)
- Kyung Yeol Ma
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Department of Energy Science and Department of Chemistry, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Center for 2D Quantum Heterostructures, Institute of Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Hyeongjoon Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hyuntae Hwang
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Da Sol Jeong
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hoon Ju Lee
- Department of Energy Science and Department of Chemistry, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Center for 2D Quantum Heterostructures, Institute of Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Kyeongseo Cho
- Department of Energy Science and Department of Chemistry, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Center for 2D Quantum Heterostructures, Institute of Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Jieun Yang
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Hu Young Jeong
- Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hyeon Suk Shin
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Department of Energy Science and Department of Chemistry, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Center for 2D Quantum Heterostructures, Institute of Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
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Seo G, Lee G, Kim W, An I, Choi M, Jang S, Park YJ, Lee JO, Cho D, Park EC. Ultrasensitive biosensing platform for Mycobacterium tuberculosis detection based on functionalized graphene devices. Front Bioeng Biotechnol 2023; 11:1313494. [PMID: 38179133 PMCID: PMC10765604 DOI: 10.3389/fbioe.2023.1313494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/05/2023] [Indexed: 01/06/2024] Open
Abstract
Tuberculosis (TB) has high morbidity as a chronic infectious disease transmitted mainly through the respiratory tract. However, the conventional diagnosis methods for TB are time-consuming and require specialists, making the diagnosis of TB with point-of-care (POC) detection difficult. Here, we developed a graphene-based field-effect transistor (GFET) biosensor for detecting the MPT64 protein of Mycobacterium tuberculosis with high sensitivity as a POC detection platform for TB. For effective conjugation of antibodies, the graphene channels of the GFET were functionalized by immobilizing 1,5-diaminonaphthalene (1,5-DAN) and glutaraldehyde linker molecules onto the graphene surface. The successful immobilization of linker molecules with spatial uniformity on the graphene surface and subsequent antibody conjugation were confirmed by Raman spectroscopy and X-ray photoelectron spectroscopy. The GFET functionalized with MPT64 antibodies showed MPT64 detection with a detection limit of 1 fg/mL in real-time, indicating that the GFET biosensor is highly sensitive. Compared to rapid detection tests (RDT) and enzyme-linked immunosorbent assays, the GFET biosensor platform developed in this study showed much higher sensitivity but much smaller dynamic range. Due to its high sensitivity, the GFET biosensor platform can bridge the gap between time-consuming molecular diagnostics and low-sensitivity RDT, potentially aiding in early detection or management of relapses in infectious diseases.
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Affiliation(s)
- Giwan Seo
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Geonhee Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Wooyoung Kim
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Inyoung An
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Myungwoo Choi
- Department of Materials Science and Engineering, Korea University, Seoul, Republic of Korea
| | - Sojeong Jang
- Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Yeon-Joon Park
- Department of Laboratory Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jeong-O. Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Donghwi Cho
- Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Edmond Changkyun Park
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
- Critical Diseases Diagnostics Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
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