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Castro SVF, Pereira JFS, Souza MMC, Siqueira GP, Santana MHP, Richter EM, Munoz RAA. Rapid sequential determination of the explosives 2,4,6-trinitrotoluene and cyclotrimethylenetrinitramine in forensic samples employing a graphite sheet sensor and cyclic square-wave stripping voltammetry. Mikrochim Acta 2024; 191:396. [PMID: 38877161 DOI: 10.1007/s00604-024-06461-7] [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: 01/25/2024] [Accepted: 05/24/2024] [Indexed: 06/16/2024]
Abstract
The development of a portable analytical procedure is described for rapid sequential detection and quantification of the explosives 2,4,6-trinitrotoluene (TNT) and cyclotrimethylenetrinitramine (RDX) in forensic samples using a graphite sheet (GS). A single GS platform works as a collector of explosive residues and detector after its assembly into a 3D-printed cell. The detection strategy is based on cyclic square-wave stripping voltammetry. The cathodic scan from + 0.1 to -1.0 V with accumulation at 0.0 V enables the TNT detection (three reduction peaks), and the anodic scan from + 0.2 to + 1.55 V with accumulation at -0.9 V provides the RDX detection (two oxidation processes). Low detection limit values (0.1 µmol L-1 for TNT and 2.4 µmol L-1 for RDX) and wide linear ranges (from 1 to 150 µmol L-1 for TNT and from 20 to 300 µmol L-1 for RDX) were obtained. The sensor did not respond to pentaerythritol tetranitrate (PETN), which was evaluated as a potential interferent, because plastic explosives contain mixtures of TNT, RDX, and PETN. The GS electrode was also evaluated as a collector of TNT and RDX residues spread on different surfaces to simulate forensic scenarios. After swiping over different surfaces (metal, granite, wood, cloths, hands, money bills, and cellphone), the GS electrode was assembled in the 3D-printed cell ready to measure both explosives by the proposed method. In all cases, the presence of TNT and RDX was confirmed, attesting the reliability of the proposed device to act as collector and sensor.
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Affiliation(s)
- Sílvia V F Castro
- Chemistry Institute, Federal University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Jian F S Pereira
- Chemistry Institute, Federal University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Maria M C Souza
- Chemistry Institute, Federal University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Gilvana P Siqueira
- Chemistry Institute, Federal University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Mário H P Santana
- Forensic Laboratory of the Federal Police, Uberlândia, 38408-663, MG, Brazil
| | - Eduardo M Richter
- Chemistry Institute, Federal University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Rodrigo A A Munoz
- Chemistry Institute, Federal University of Uberlândia, Uberlândia, 38400-902, MG, Brazil.
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Ramos DLO, de Faria LV, Alves DAC, Muñoz RAA, Dos Santos WTP, Richter EM. Electrochemical platform produced by 3D printing for analysis of small volumes using different electrode materials. Talanta 2023; 265:124832. [PMID: 37354624 DOI: 10.1016/j.talanta.2023.124832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/26/2023]
Abstract
Fused deposition modeling (FDM) 3D printing is a promising additive manufacturing technique to produce low-cost disposable electrochemical devices. However, the print of devices like well-known screen-printed electrodes (all electrodes on the same device) is difficult using the available technology (few materials available for production of working electrodes). In this paper we present a procedure to produce disposable and robust electrochemical devices by FDM 3D printing that allows reproducible analysis of small volumes (50-2000 μL). The device consists of just two printed parts that allow easy coupling of different conductive materials for using as disposable or non-disposable working electrodes with reproducible geometric area. Printed counter and pseudo-reference electrodes can also be easily fitted into the microcell. Moreover, conventional counter (platinum wire) and mini reference electrodes can also be used. As a proof of concept, paracetamol, cocaine and uric acid were used as model analytes using different materials as working electrodes. Linear calibration curves (r > 0.99) with similar slopes (0.29 ± 0.01 μA μmol L-1; RSD = 3.4%) were obtained by square wave voltammetry (SWV) using a complete printed system and different volumes of standard solutions of paracetamol (50, 100, and 200 μL). For uric acid, a linear range of 10-125 μmol L-1 (r > 0.99), was obtained using differential pulse voltammetry as the electrochemical technique and a disposable laser-induced graphene base as the working electrode. With the coupling of boron-doped diamond working electrode, screening tests were successfully performed in seized cocaine samples with selective detection of cocaine in the presence of its most common adulterants. The production cost per unit of a complete electrochemical system is around US 5.00. In large-scale production, only the working electrode needs to be replaced while the microcell and counter/pseudo reference electrodes do not need to be discarded.
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Affiliation(s)
- David L O Ramos
- Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, Minas Gerais, Brazil
| | - Lucas V de Faria
- Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, Minas Gerais, Brazil
| | - Diego A C Alves
- Faculty of Mechanical Engineering, Federal University of Uberlândia, 38400-902, Uberlândia, Minas Gerais, Brazil
| | - Rodrigo A A Muñoz
- Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, Minas Gerais, Brazil
| | - Wallans T P Dos Santos
- Department of Pharmacy, Federal University of the Jequitinhonha and Mucuri Valleys, 39100-000, Diamantina, Minas Gerais, Brazil
| | - Eduardo M Richter
- Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, Minas Gerais, Brazil.
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Sýs M, Bártová M, Bartoš M, Švancara I, Mikysek T. Shungite (Mineralized Carbon) as a Promising Electrode Material for Electroanalysis. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1217. [PMID: 36770220 PMCID: PMC9919474 DOI: 10.3390/ma16031217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/20/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
In this study, two different types of amorphous carbonaceous Precambrian rock, classified as noble elite shungite and black raw shungite, were tested as possible electrode materials of natural origin. Both types were machined into cylindrical shapes to form the corresponding solid electrodes and their physicochemical and electrochemical properties were compared with the standard glassy carbon electrode (GCE). The raw stones were first subjected to microscopic imaging by using scanning electron microscopy and energy-dispersive X-ray spectroscopy, both of which indicated significant differences in their morphology and in the content of impurities. An electrode prototype manufactured from noble elite shungite (EShE) with a carbon content of about 94% (w/w) has offered a very satisfactory electrochemical performance with a nearly identical heterogeneous electron-transfer rate constant of 7.8 × 10-3 cm s-1 for ferro/ferricyanide redox couple, a slightly narrower potential range (~2.1 V) and a relatively low double-layer capacitance (of ca. 50 μF), resulting in low background currents comparable to those at the GCE. In contrast, the second electrode based on black raw shungite (BShE) with a carbon content of ca. 63% (w/w) exhibited markedly worse electrochemical properties and more than four times higher double-layer capacitance, both of which were probably due to the presence of poorly conductive impurities. The whole study has been completed with three different examples of electroanalytical applications, revealing that the first type, EShE, is a more suitable material for the preparation of electrodes and may represent a cheap alternative to commercially marketed products.
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Cardoso RM, Pereira TS, Santos DMD, Migliorini FL, Mattoso LH, Correa DS. Laser-induced graphitized electrodes enabled by a 3D printer/diode laser setup for voltammetric detection of hormones. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Immobilization of Glucose Oxidase on Glutathione Capped CdTe Quantum Dots for Bioenergy Generation. Catalysts 2022. [DOI: 10.3390/catal12121659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
An efficient immobilization of Glucose oxidase (GOx) on an appropriate substrate is one of the main challenges of developing fuel cells that allow energy to be obtained from renewable substrates such as carbohydrates in physiological environments. The research importance of biofuel cells relies on their experimental robustness and high compatibility with biological organisms such as tissues or the bloodstream with the aim of obtaining electrical energy even from living systems. In this work, we report the use of 5,10,15,20 tetrakis (1-methyl-4-pyridinium) porphyrin and glutathione capped CdTe Quantum dots (GSH-CdTeQD) as a support matrix for the immobilization of GOx on carbon surfaces. Fluorescent GSH-CdTeQD particles were synthesized and their characterization by UV-Vis spectrophotometry showed a particle size between 5–7 nm, which was confirmed by DLS and TEM measurements. Graphite and Toray paper electrodes were modified by a drop coating of porphyrin, GSH-CdTeQD and GOx, and their electrochemical activity toward glucose oxidation was evaluated by cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy. Additionally, GOx modified electrode activity was explored by scanning electrochemical microscopy, finding that near to 70% of the surface was covered with active enzyme. The modified electrodes showed a glucose sensitivity of 0.58 ± 0.01 μA/mM and an apparent Michaelis constant of 7.8 mM. The addition of BSA blocking protein maintained the current response of common interferent molecules such as ascorbic acid (AA) with less than a 5% of interference percentage. Finally, the complex electrodes were employed as anodes in a microfluidic biofuel cell (μBFC) in order to evaluate the performance in energy production. The enzymatic anodes used in the μBFC allowed us to obtain a current density of 7.53 mAcm−2 at the maximum power density of 2.30 mWcm−2; an open circuit potential of 0.57 V was observed in the biofuel cell. The results obtained suggest that the support matrix porphyrin and GSH-CdTeQD is appropriate to immobilize GOx while preserving the enzyme’s catalytic activity. The reported electrode arrangement is a viable option for bioenergy production and/or glucose quantification.
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Magnetically aligned graphite flakes electrodes for excellent sensitive detection of hydroquinone and catechol. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02248-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Graphite sheets modified with poly(methylene blue) films: A cost-effective approach for the electrochemical sensing of the antibiotic nitrofurantoin. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Kongkaew S, Tubtimtong S, Thavarungkul P, Kanatharana P, Chang KH, Abdullah AFL, Limbut W. A Fabrication of Multichannel Graphite Electrode Using Low-Cost Stencil-Printing Technique. SENSORS 2022; 22:s22083034. [PMID: 35459019 PMCID: PMC9032575 DOI: 10.3390/s22083034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/10/2022] [Accepted: 04/11/2022] [Indexed: 12/10/2022]
Abstract
Multichannel graphite electrodes (MGrEs) have been designed and fabricated in this study. A template was cut from an adhesive plastic sheet using a desktop cutting device. The template was placed on a polypropylene substrate, and carbon graphite ink was applied with a squeegee to the template. The size of the auxiliary electrode (AE) as well as the location of the reference electrode (RE) of MGrEs design were investigated. Scanning electron microscopy was used to determine the thickness of the ink on the four working electrodes (WEs), which was 21.9 ± 1.8 µm. Cyclic voltammetry with a redox probe solution was used to assess the precision of the four WEs. The intra-electrode repeatability and inter-electrode reproducibility of the MGrEs production were satisfied by low RSD (<6%). Therefore, the MGrEs is reliable and capable of detecting four replicates of the target analyte in a single analysis. The electrochemical performance of four WEs was investigated and compared to one WE. The sensitivity of the MGrEs was comparable to the sensitivity of a single WE. The MGrEs’ potential applications were investigated by analyzing the nitrite in milk and tap water samples (recoveries values of 97.6 ± 0.4 to 110 ± 2%).
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Affiliation(s)
- Supatinee Kongkaew
- Center of Excellence for Trace Analysis and Biosensors (TAB-CoE), Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (S.K.); (P.T.); (P.K.)
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand;
| | - Suowarot Tubtimtong
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand;
| | - Panote Thavarungkul
- Center of Excellence for Trace Analysis and Biosensors (TAB-CoE), Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (S.K.); (P.T.); (P.K.)
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Proespichaya Kanatharana
- Center of Excellence for Trace Analysis and Biosensors (TAB-CoE), Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (S.K.); (P.T.); (P.K.)
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Kah Haw Chang
- Forensic Science Programme, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; (K.H.C.); (A.F.L.A.)
| | - Ahmad Fahmi Lim Abdullah
- Forensic Science Programme, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; (K.H.C.); (A.F.L.A.)
| | - Warakorn Limbut
- Center of Excellence for Trace Analysis and Biosensors (TAB-CoE), Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (S.K.); (P.T.); (P.K.)
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand;
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Correspondence: ; Tel.: +66-74-288563
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Paixão GA, Souza TG, Pradela Filho LA, Ferreira MV, Takeuchi RM, Assunção RMN, Kikuti E. Low‐cost
conductive films based on graphite and cellulose acetate as promising electroanalytical platforms. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Guilherme A. Paixão
- Department Center of Education and Human Sciences Federal University of São Carlos São Carlos Brazil
| | - Thaís G. Souza
- Pontal Institute of Exact and Natural Sciences Federal University of Uberlândia Ituiutaba Brazil
| | | | - Marcos V. Ferreira
- Institute of Chemistry Federal University of Uberlândia Uberlândia Brazil
| | - Regina M. Takeuchi
- Pontal Institute of Exact and Natural Sciences Federal University of Uberlândia Ituiutaba Brazil
- Institute of Chemistry Federal University of Uberlândia Uberlândia Brazil
| | - Rosana M. N. Assunção
- Pontal Institute of Exact and Natural Sciences Federal University of Uberlândia Ituiutaba Brazil
- Institute of Chemistry Federal University of Uberlândia Uberlândia Brazil
| | - Elaine Kikuti
- Institute of Chemistry Federal University of Uberlândia Uberlândia Brazil
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Ferreira PA, de Oliveira FM, de Melo EI, de Carvalho AE, Lucca BG, Ferreira VS, da Silva RAB. Multi sensor compatible 3D-printed electrochemical cell for voltammetric drug screening. Anal Chim Acta 2021; 1169:338568. [PMID: 34088376 DOI: 10.1016/j.aca.2021.338568] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 02/06/2023]
Abstract
3D printing is a hot topic in electroanalytical chemistry, allowing the construction of custom cells and sensors at affordable prices. In this work, we describe a novel small and practical 3D-printed electrochemical cell. The cell's body, manufactured in ABS on a 3D printer, is composed by three parts easily screwed: solution vessel, stick and cover with two embedded 3D-pen-printed carbon black-polylactic acid (CB-PLA) electrodes (counter and pseudo-reference). The cell is compatible with any planar working electrode, in which boron-doped diamond, graphite sheet (GS) and 3D-printed CB-PLA were shown as examples. A new alternative protocol to quickly produce 3D-printed sensors using a 3D pen and other low-cost apparatus is also proposed. The voltammetric performance of each evaluated sensor was carried out in the presence of redox probe ferricyanide and paracetamol as model analyte, and the surfaces were characterized by electrochemical impedance spectroscopy and scanning electrochemical microscopy. To present an analytical application of the 3D-printed cell, low-cost flexible sensors (GS and CB-PLA) were used as integrated platforms for sampling and detection of solid drugs. As a proof-of-concept, traces of drugs with a historic of counterfeit or adulteration (sildenafil citrate, tadalafil, losartan and 17α-ethinylestradiol) were abrasively sampled over the sensor and assembled on 3D-printed cell to perform a fast voltammetric scan in the presence of only 500 μL of electrolyte. This protocol is attractive for pharmaceutical and forensic sciences as a simple preliminary screening method which could identify the presence or absence of the suspicious drug as well as impurities or adulterants. The 3D-printed cell was also used for the determination of 17α-ethinylestradiol in a contraceptive pill to demonstrate a quantitative analysis. The cell is quickly printed (90 min), cheap (US$ 0.30) and requires low electrolyte volumes (0.5-3.0 mL), being suitable to be used in several other electroanalyses, especially for on-site applications.
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Affiliation(s)
- Priscila Alves Ferreira
- Instituto de Química, Universidade Federal de Mato Grosso Do Sul, 79074-460, Campo Grande, MS, Brazil
| | | | - Edmar Isaias de Melo
- Instituto de Química, Universidade Federal de Uberlândia, 38500-000, Monte Carmelo, MG, Brazil
| | - Adriana Evaristo de Carvalho
- Faculdade de Ciências Exatas e Tecnológicas, Universidade Federal da Grande Dourados, 79804-970, Dourados, MS, Brazil
| | - Bruno Gabriel Lucca
- Instituto de Química, Universidade Federal de Mato Grosso Do Sul, 79074-460, Campo Grande, MS, Brazil
| | - Valdir Souza Ferreira
- Instituto de Química, Universidade Federal de Mato Grosso Do Sul, 79074-460, Campo Grande, MS, Brazil
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Freitas JM, Silva PR, Munoz RA, Richter EM. Fast and portable voltammetric method for the determination of the amphetamine adulterant ephedrine in natural over-the-counter weight-loss products. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tajeu KY, Ebunang DVT, Tonleu RCT, Jiokeng SLZ, Ymele E, Tonle IK. Electroanalytical application of thiol-grafted laponite to the sensitive quantification of ciprofloxacin antibiotic. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01508-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Faria LV, Lisboa TP, Alves GF, Farias DM, Matos MAC, Muñoz RAA, Matos RC. Electrochemical Study of Different Sensors for Simple and fast Quantification of Ciprofloxacin in Pharmaceutical Formulations and Bovine Milk. ELECTROANAL 2020. [DOI: 10.1002/elan.202060211] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lucas Vinícius Faria
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas) Departamento de Química Instituto de Ciências Exatas Universidade Federal de Juiz de Fora 36036-900 Juiz de Fora-MG Brazil
| | - Thalles Pedrosa Lisboa
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas) Departamento de Química Instituto de Ciências Exatas Universidade Federal de Juiz de Fora 36036-900 Juiz de Fora-MG Brazil
| | - Guilherme Figueira Alves
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas) Departamento de Química Instituto de Ciências Exatas Universidade Federal de Juiz de Fora 36036-900 Juiz de Fora-MG Brazil
| | - Davi Marques Farias
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas) Departamento de Química Instituto de Ciências Exatas Universidade Federal de Juiz de Fora 36036-900 Juiz de Fora-MG Brazil
| | - Maria Auxiliadora Costa Matos
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas) Departamento de Química Instituto de Ciências Exatas Universidade Federal de Juiz de Fora 36036-900 Juiz de Fora-MG Brazil
| | | | - Renato Camargo Matos
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas) Departamento de Química Instituto de Ciências Exatas Universidade Federal de Juiz de Fora 36036-900 Juiz de Fora-MG Brazil
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Additive-manufactured sensors for biofuel analysis: copper determination in bioethanol using a 3D-printed carbon black/polylactic electrode. Anal Bioanal Chem 2020; 412:2755-2762. [DOI: 10.1007/s00216-020-02513-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/04/2020] [Accepted: 02/12/2020] [Indexed: 12/15/2022]
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Caneppele GL, Reis DD, Goncalves AB, Da Silva GC, Martins CA. Active Porous Electrodes Prepared by Ultrasonic‐bath and their Application in Glucose/O
2
Electrochemical Reactions. ELECTROANAL 2020. [DOI: 10.1002/elan.201900625] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gabriella L. Caneppele
- Institute of Physics Universidade Federal de Mato Grosso do Sul, CP 549 79070-900 Campo Grande, MS Brazil
| | - Diogo D. Reis
- Institute of Physics Universidade Federal de Mato Grosso do Sul, CP 549 79070-900 Campo Grande, MS Brazil
| | - Alem‐Mar B. Goncalves
- Institute of Physics Universidade Federal de Mato Grosso do Sul, CP 549 79070-900 Campo Grande, MS Brazil
| | - Gabriel C. Da Silva
- Instituto de Química de São Carlos Universidade de São Paulo, IQSC-USP C.P. 780 São Carlos, SP Brazil
| | - Cauê A. Martins
- Institute of Physics Universidade Federal de Mato Grosso do Sul, CP 549 79070-900 Campo Grande, MS Brazil
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Castro SV, Cardoso RM, Santana MH, Richter EM, Munoz RA. Graphite sheet as a novel material for the collection and electrochemical sensing of explosive residues. Talanta 2019; 203:106-111. [DOI: 10.1016/j.talanta.2019.05.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 02/05/2023]
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Pereira JF, Borges PH, Moura GM, Gelamo RV, Nossol E, Canobre SC, Richter EM, Munoz RA. Improved electrochemical performance of pyrolytic graphite paper: Electrochemical versus reactive cold-plasma activation. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2019.106497] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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