1
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Vásquez-Velarde M, Fernández L, Bolaños-Méndez D, Burbano-Erazo H, Alvarez-Paguay J, Carrera P, Espinoza-Montero PJ. Evaluation of a gold-nanoparticle-modified carbon-fiber microelectrode to quantify mercury in canned tuna sold in Ecuador. CHEMOSPHERE 2023; 338:139483. [PMID: 37454989 DOI: 10.1016/j.chemosphere.2023.139483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 07/05/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
Seafood consumption is the primary exposure route for trace metals like mercury. Accordingly, canned tuna meat has been focused on by researchers because of the potential bioaccumulation of high amounts of mercury. This study aimed to test a novel and reliable electroanalytical method employing a working electrode consisting of gold-nanoparticle-modified carbon microfibers to quantify total mercury in canned tuna samples. Determination was achieved via differential pulse anodic stripping voltammetry. The proposed method had a limit of detection of 3.9781 ± 0.0001 μg L-1 and a limit of quantification of 33.6634 ± 0.0001 μg L-1, with a sensitivity of 0.3275 nA μg L-1. The modified electrode was evaluated in samples taken from three canned tuna brands sold in the Sangolquí parish in Rumiñahui, Ecuador. These brands, coded A, B, and C, represent 47.92%, 27.08%, and 11.98% of all canned tuna sold in the Ecuadorian market, respectively. The resulting respective total mercury concentrations were 0.5999 ± 0.0001 mg kg-1; 0.9387 ± 0.0001 mg kg-1; and 0.3442 ± 0.0001 mg kg-1 for A, B, and C. Method accuracy was determined through the recovery percentages of ≥98%, which indicated acceptable accuracy for the final optimized method. Mean mercury concentrations for all samples did not represent a carcinogenic risk for consumers. However, the values obtained for potential no-carcinogenic risk and daily consumption rate suggest that consumers of tuna canned in water, particularly brand C, may be at risk.
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Affiliation(s)
- Milena Vásquez-Velarde
- Escuela de Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito 17 01 21-84, Ecuador
| | - Lenys Fernández
- Escuela de Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito 17 01 21-84, Ecuador.
| | - Diego Bolaños-Méndez
- Escuela de Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito 17 01 21-84, Ecuador
| | - Harold Burbano-Erazo
- Escuela de Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito 17 01 21-84, Ecuador
| | - Jocelyne Alvarez-Paguay
- Escuela de Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito 17 01 21-84, Ecuador
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2
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Huang W, Zulkifli MYB, Chai M, Lin R, Wang J, Chen Y, Chen V, Hou J. Recent advances in enzymatic biofuel cells enabled by innovative materials and techniques. EXPLORATION (BEIJING, CHINA) 2023; 3:20220145. [PMID: 37933234 PMCID: PMC10624391 DOI: 10.1002/exp.20220145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 03/21/2023] [Indexed: 11/08/2023]
Abstract
The past few decades have seen increasingly rapid advances in the field of sustainable energy technologies. As a new bio- and eco-friendly energy source, enzymatic biofuel cells (EBFCs) have garnered significant research interest due to their capacity to power implantable bioelectronics, portable devices, and biosensors by utilizing biomass as fuel under mild circumstances. Nonetheless, numerous obstacles impeded the commercialization of EBFCs, including their relatively modest power output and poor long-term stability of enzymes. To depict the current progress of EBFC and address the challenges it faces, this review traces back the evolution of EBFC and focuses on contemporary advances such as newly emerged multi or single enzyme systems, various porous framework-enzyme composites techniques, and innovative applications. Besides emphasizing current achievements in this field, from our perspective part we also introduced novel electrode and cell design for highly effective EBFC fabrication. We believe this review will assist readers in comprehending the basic research and applications of EBFCs as well as potentially spark interdisciplinary collaboration for addressing the pressing issues in this field.
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Affiliation(s)
- Wengang Huang
- School of Chemical EngineeringThe University of QueenslandSaint LuciaQueenslandAustralia
| | - Muhammad Yazid Bin Zulkifli
- School of Chemical EngineeringThe University of QueenslandSaint LuciaQueenslandAustralia
- School of Chemical EngineeringThe University of New South WalesSydneyNew South WalesAustralia
| | - Milton Chai
- School of Chemical EngineeringThe University of QueenslandSaint LuciaQueenslandAustralia
| | - Rijia Lin
- School of Chemical EngineeringThe University of QueenslandSaint LuciaQueenslandAustralia
| | - Jingjing Wang
- Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSaint LuciaQueenslandAustralia
| | - Yuelei Chen
- School of Chemical EngineeringThe University of QueenslandSaint LuciaQueenslandAustralia
| | - Vicki Chen
- School of Chemical EngineeringThe University of QueenslandSaint LuciaQueenslandAustralia
| | - Jingwei Hou
- School of Chemical EngineeringThe University of QueenslandSaint LuciaQueenslandAustralia
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3
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Yuan Y, Shen J, Salmon S. Developing Enzyme Immobilization with Fibrous Membranes: Longevity and Characterization Considerations. MEMBRANES 2023; 13:membranes13050532. [PMID: 37233593 DOI: 10.3390/membranes13050532] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/14/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023]
Abstract
Fibrous membranes offer broad opportunities to deploy immobilized enzymes in new reactor and application designs, including multiphase continuous flow-through reactions. Enzyme immobilization is a technology strategy that simplifies the separation of otherwise soluble catalytic proteins from liquid reaction media and imparts stabilization and performance enhancement. Flexible immobilization matrices made from fibers have versatile physical attributes, such as high surface area, light weight, and controllable porosity, which give them membrane-like characteristics, while simultaneously providing good mechanical properties for creating functional filters, sensors, scaffolds, and other interface-active biocatalytic materials. This review examines immobilization strategies for enzymes on fibrous membrane-like polymeric supports involving all three fundamental mechanisms of post-immobilization, incorporation, and coating. Post-immobilization offers an infinite selection of matrix materials, but may encounter loading and durability issues, while incorporation offers longevity but has more limited material options and may present mass transfer obstacles. Coating techniques on fibrous materials at different geometric scales are a growing trend in making membranes that integrate biocatalytic functionality with versatile physical supports. Biocatalytic performance parameters and characterization techniques for immobilized enzymes are described, including several emerging techniques of special relevance for fibrous immobilized enzymes. Diverse application examples from the literature, focusing on fibrous matrices, are summarized, and biocatalyst longevity is emphasized as a critical performance parameter that needs increased attention to advance concepts from lab scale to broader utilization. This consolidation of fabrication, performance measurement, and characterization techniques, with guiding examples highlighted, is intended to inspire future innovations in enzyme immobilization with fibrous membranes and expand their uses in novel reactors and processes.
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Affiliation(s)
- Yue Yuan
- Center for Nanophase Materials and Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Fiber and Polymer Science Program, Department of Textile Engineering Chemistry & Science, North Carolina State University, Raleigh, NC 27695, USA
| | - Jialong Shen
- Fiber and Polymer Science Program, Department of Textile Engineering Chemistry & Science, North Carolina State University, Raleigh, NC 27695, USA
| | - Sonja Salmon
- Fiber and Polymer Science Program, Department of Textile Engineering Chemistry & Science, North Carolina State University, Raleigh, NC 27695, USA
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4
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Han J, Stine JM, Chapin AA, Ghodssi R. A portable electrochemical sensing platform for serotonin detection based on surface-modified carbon fiber microelectrodes. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:1096-1104. [PMID: 36723293 DOI: 10.1039/d2ay01627c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Serotonin (5-HT) is one of the key neurotransmitters in the human body, regulating numerous physiological functions. A disruption in 5-HT homeostasis could result in serious health problems, including neurodegenerative disorders, depression, and 5-HT syndrome. Detection of 5-HT concentrations in biological fluids, such as urine, is a potential solution for early diagnosis of these diseases. In this study, we developed a novel, simple, and low-cost electrochemical sensing platform consisting of a portable workstation with customized electrodes for 5-HT detection in artificial biological fluids. Nafion/carbon nanotubes (CNTs) and electrochemically modified carbon fiber microelectrodes (Nafion-CNT/EC CFMEs) displayed improved 5-HT sensitivity and selectivity. Together with a customized Ag/AgCl reference electrode and Pt counter electrode, the portable 5-HT sensing platform had a sensitivity of 0.074 μA μM-1 and a limit of detection (LOD) of 140 nM. This system was also assessed to measure 5-HT spiked in artificial urine samples, showing nearly full recovery rates. These satisfactory results demonstrated that the portable system exhibits outstanding performance and confirmed the feasibility of 5-HT detection, which can be used to provide point-of-care analysis in actual biological samples.
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Affiliation(s)
- Jinjing Han
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA,.
- Institute for Systems Research, University of Maryland, College Park, MD 20742, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742, USA
| | - Justin M Stine
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA,.
- Institute for Systems Research, University of Maryland, College Park, MD 20742, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742, USA
| | - Ashley A Chapin
- Institute for Systems Research, University of Maryland, College Park, MD 20742, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Reza Ghodssi
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA,.
- Institute for Systems Research, University of Maryland, College Park, MD 20742, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
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5
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Kongkaew S, Meng L, Limbut W, Kanatharana P, Thavarungkul P, Mak WC. Evaluation on the Intrinsic Physicoelectrochemical Attributes and Engineering of Micro-, Nano-, and 2D-Structured Allotropic Carbon-Based Papers for Flexible Electronics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14302-14313. [PMID: 34859679 PMCID: PMC8675137 DOI: 10.1021/acs.langmuir.1c02121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/18/2021] [Indexed: 05/14/2023]
Abstract
Flexible electronics have gained more attention for emerging electronic devices such as sensors, biosensors, and batteries with advantageous properties including being thin, lightweight, flexible, and low-cost. The development of various forms of allotropic carbon papers provided a new dry-manufacturing route for the fabrication of flexible and wearable electronics, while the electrochemical performance and the bending stability are largely influenced by the bulk morphology and the micro-/nanostructured domains of the carbon papers. Here, we evaluate systematically the intrinsic physicoelectrochemical properties of allotropic carbon-based conducting papers as flexible electrodes including carbon-nanotubes-paper (CNTs-paper), graphene-paper (GR-paper), and carbon-fiber-paper (CF-paper), followed by functionalization of the allotropic carbon papers for the fabrication of flexible electrodes. The morphology, chemical structure, and defects originating from the allotropic nanostructured carbon materials were characterized by scanning electron microscopy (SEM) and Raman spectroscopy, followed by evaluating the electrochemical performance of the corresponding flexible electrodes by cyclic voltammetry and electrochemical impedance spectroscopy. The electron-transfer rate constants of the CNTs-paper and GR-paper electrodes were ∼14 times higher compared with the CF-paper electrode. The CNTs-paper and GR-paper electrodes composed of nanostructured carbon showed significantly higher bending stabilities of 5.61 and 4.96 times compared with the CF-paper. The carbon-paper flexible electrodes were further functionalized with an inorganic catalyst, Prussian blue (PB), forming the PB-carbon-paper catalytic electrode and an organic conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), forming the PEDOT-carbon-paper capacitive electrode. The intrinsic attribute of different allotropic carbon electrodes affects the deposition of PB and PEDOT, leading to different electrocatalytic and capacitive performances. These findings are insightful for the future development and fabrication of advanced flexible electronics with allotropic carbon papers.
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Affiliation(s)
- Supatinee Kongkaew
- Biosensors
and Bioelectronics Centre, Division of Sensor and Actuator Systems,
Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
- Center
of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- 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
| | - Lingyin Meng
- Biosensors
and Bioelectronics Centre, Division of Sensor and Actuator Systems,
Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Warakorn Limbut
- Center
of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- 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
| | - Proespichaya Kanatharana
- Center
of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- 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
| | - Panote Thavarungkul
- Center
of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- 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
| | - Wing Cheung Mak
- Biosensors
and Bioelectronics Centre, Division of Sensor and Actuator Systems,
Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
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6
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Sedenho GC, Modenez I, Mendes GR, Crespilho FN. The role of extracellular polymeric substance matrix on Saccharomyces cerevisiae bioelectricity. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Casimero C, Hegarty C, McGlynn RJ, Davis J. Ultrasonic exfoliation of carbon fiber: electroanalytical perspectives. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-019-01379-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Abstract
Electrochemical anodisation techniques are regularly used to modify carbon fiber surfaces as a means of improving electrochemical performance. A detailed study of the effects of oxidation (+ 2 V) in alkaline media has been conducted and Raman, XPS and SEM analyses of the modification process have been tallied with the resulting electrochemical properties. The co-application of ultrasound during the oxidative process has also been investigated to determine if the cavitational and mass transport features influence both the physical and chemical nature of the resulting fibers. Marked discrepancies between anodisation with and without ultrasound is evident in the C1s spectra with variations in the relative proportions of the electrogenerated carbon-oxygen functionalities. Mechanisms that could account for the variation in surface species are considered.
Graphic abstract
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8
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Xiao X, Xia HQ, Wu R, Bai L, Yan L, Magner E, Cosnier S, Lojou E, Zhu Z, Liu A. Tackling the Challenges of Enzymatic (Bio)Fuel Cells. Chem Rev 2019; 119:9509-9558. [PMID: 31243999 DOI: 10.1021/acs.chemrev.9b00115] [Citation(s) in RCA: 180] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The ever-increasing demands for clean and sustainable energy sources combined with rapid advances in biointegrated portable or implantable electronic devices have stimulated intensive research activities in enzymatic (bio)fuel cells (EFCs). The use of renewable biocatalysts, the utilization of abundant green, safe, and high energy density fuels, together with the capability of working at modest and biocompatible conditions make EFCs promising as next generation alternative power sources. However, the main challenges (low energy density, relatively low power density, poor operational stability, and limited voltage output) hinder future applications of EFCs. This review aims at exploring the underlying mechanism of EFCs and providing possible practical strategies, methodologies and insights to tackle these issues. First, this review summarizes approaches in achieving high energy densities in EFCs, particularly, employing enzyme cascades for the deep/complete oxidation of fuels. Second, strategies for increasing power densities in EFCs, including increasing enzyme activities, facilitating electron transfers, employing nanomaterials, and designing more efficient enzyme-electrode interfaces, are described. The potential of EFCs/(super)capacitor combination is discussed. Third, the review evaluates a range of strategies for improving the stability of EFCs, including the use of different enzyme immobilization approaches, tuning enzyme properties, designing protective matrixes, and using microbial surface displaying enzymes. Fourth, approaches for the improvement of the cell voltage of EFCs are highlighted. Finally, future developments and a prospective on EFCs are envisioned.
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Affiliation(s)
- Xinxin Xiao
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China.,Department of Chemical Sciences and Bernal Institute , University of Limerick , Limerick V94 T9PX , Ireland
| | - Hong-Qi Xia
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China
| | - Ranran Wu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences , 32 West seventh Road, Tianjin Airport Economic Area , Tianjin 300308 , China
| | - Lu Bai
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China
| | - Lu Yan
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China
| | - Edmond Magner
- Department of Chemical Sciences and Bernal Institute , University of Limerick , Limerick V94 T9PX , Ireland
| | - Serge Cosnier
- Université Grenoble-Alpes , DCM UMR 5250, F-38000 Grenoble , France.,Département de Chimie Moléculaire , UMR CNRS, DCM UMR 5250, F-38000 Grenoble , France
| | - Elisabeth Lojou
- Aix Marseille Univ, CNRS, BIP, Bioénergétique et Ingénierie des Protéines UMR7281 , Institut de Microbiologie de la Méditerranée, IMM , FR 3479, 31, chemin Joseph Aiguier 13402 Marseille , Cedex 20 , France
| | - Zhiguang Zhu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences , 32 West seventh Road, Tianjin Airport Economic Area , Tianjin 300308 , China
| | - Aihua Liu
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China.,College of Chemistry & Chemical Engineering , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China.,School of Pharmacy, Medical College , Qingdao University , Qingdao 266021 , China
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9
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Cho MY, Lee JH, Kim SH, Kim JS, Timilsina S. An Extremely Inexpensive, Simple, and Flexible Carbon Fiber Electrode for Tunable Elastomeric Piezo-Resistive Sensors and Devices Realized by LSTM RNN. ACS APPLIED MATERIALS & INTERFACES 2019; 11:11910-11919. [PMID: 30844231 DOI: 10.1021/acsami.9b00464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Here, we describe the utility of a carbon fiber (CF) electrode that is inexpensive, simple, and flexible and can be embedded with elastomeric nanocomposite piezo-resistive sensors fabricated from silicone rubber (Ecoflex) blended with carbon nanotubes (CNTs) and various wt % of silicone thinner to tune the sensitivity and softness range. The performance of the CF electrode was evaluated on the basis of piezo-resistive responses from the sensors subjected to dynamic sinusoidal compressive strains at different levels and frequencies. The responses were positive-pressure effects with rate-dependent asymmetric nonlinear hysteresis characteristics. Developing a mathematical model to describe the rate-dependent asymmetric nonlinear hysteresis behavior is technically impossible; therefore, we employed artificial intelligence-based hysteresis modeling, long short-term memory recurrent neural network, to describe the hysteresis nonlinearity. The debonding strength of the CF electrode was determined in the pull-off testing and was found to be much higher than that of a copper wire electrode. The debonding mechanism was further elucidated via an in situ resistance profile. The importance of a robust conductive interface between a CF electrode and a nanocomposite was experimentally demonstrated. It was found that the inherent piezo-resistance of the CF was negligible compared with the piezo-resistance of the sensor; therefore, the signals from the sensor were free of interference. We believe CF-embedded tunable piezo-resistive sensors could be used in biomedical devices, artificial e-skins, robotic touch applications, and flexible keyboards where the required stretchability of the electrode can be introduced via an appropriate geometrical design.
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10
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Macedo LJA, Iost RM, Hassan A, Balasubramanian K, Crespilho FN. Bioelectronics and Interfaces Using Monolayer Graphene. ChemElectroChem 2018. [DOI: 10.1002/celc.201800934] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Lucyano J. A. Macedo
- São Carlos Institute of Chemistry; University of São Paulo; São Carlos SP 13560-970 Brazil
| | - Rodrigo M. Iost
- Department of Chemistry School of Analytical Sciences Adlershof (SALSA) and IRIS Adlershof; Humboldt-Universität zu Berlin; Berlin 10099 Germany
| | - Ayaz Hassan
- São Carlos Institute of Chemistry; University of São Paulo; São Carlos SP 13560-970 Brazil
| | - Kannan Balasubramanian
- Department of Chemistry School of Analytical Sciences Adlershof (SALSA) and IRIS Adlershof; Humboldt-Universität zu Berlin; Berlin 10099 Germany
| | - Frank N. Crespilho
- São Carlos Institute of Chemistry; University of São Paulo; São Carlos SP 13560-970 Brazil
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11
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Pagnoncelli KC, Pereira AR, Sedenho GC, Bertaglia T, Crespilho FN. Ethanol generation, oxidation and energy production in a cooperative bioelectrochemical system. Bioelectrochemistry 2018; 122:11-25. [PMID: 29510261 DOI: 10.1016/j.bioelechem.2018.02.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/14/2018] [Accepted: 02/25/2018] [Indexed: 11/26/2022]
Abstract
Integrating in situ biofuel production and energy conversion into a single system ensures the production of more robust networks as well as more renewable technologies. For this purpose, identifying and developing new biocatalysts is crucial. Herein, is reported a bioelectrochemical system consisting of alcohol dehydrogenase (ADH) and Saccharomyces cerevisiae, wherein both function cooperatively for ethanol production and its bioelectrochemical oxidation. Here, it is shown that it is possible to produce ethanol and use it as a biofuel in a tandem manner. The strategy is to employ flexible carbon fibres (FCF) electrode that could adsorb both the enzyme and the yeast cells. Glucose is used as a substrate for the yeast for the production of ethanol, while the enzyme is used to catalyse the oxidation of ethanol to acetaldehyde. Regarding the generation of reliable electricity based on electrochemical systems, the biosystem proposed in this study operates at a low temperature and ethanol production is proportional to the generated current. With further optimisation of electrode design, we envision the use of the cooperative biofuel cell for energy conversion and management of organic compounds.
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Affiliation(s)
- Kamila C Pagnoncelli
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil
| | - Andressa R Pereira
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil
| | - Graziela C Sedenho
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil
| | - Thiago Bertaglia
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil
| | - Frank N Crespilho
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil.
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12
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PEREIRA ANDRESSAR, SEDENHO GRAZIELAC, SOUZA JOÃOCPDE, CRESPILHO FRANKN. Advances in enzyme bioelectrochemistry. ACTA ACUST UNITED AC 2018; 90:825-857. [DOI: 10.1590/0001-3765201820170514] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/11/2017] [Indexed: 11/21/2022]
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13
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Conducting polymers revisited: applications in energy, electrochromism and molecular recognition. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3556-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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The Electrochemical Behavior of Carbon Fiber Microelectrodes Modified with Carbon Nanotubes Using a Two-Step Electroless Plating/Chemical Vapor Deposition Process. SENSORS 2017; 17:s17040725. [PMID: 28358344 PMCID: PMC5421685 DOI: 10.3390/s17040725] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/18/2017] [Accepted: 03/28/2017] [Indexed: 12/21/2022]
Abstract
Carbon fiber microelectrode (CFME) has been extensively applied in the biosensor and chemical sensor domains. In order to improve the electrochemical activity and sensitivity of the CFME, a new CFME modified with carbon nanotubes (CNTs), denoted as CNTs/CFME, was fabricated and investigated. First, carbon fiber (CF) monofilaments grafted with CNTs (simplified as CNTs/CFs) were fabricated in two key steps: (i) nickel electroless plating, followed by (ii) chemical vapor deposition (CVD). Second, a single CNTs/CF monofilament was selected and encapsulated into a CNTs/CFME with a simple packaging method. The morphologies of as-prepared CNTs/CFs were characterized by scanning electron microscopy. The electrochemical properties of CNTs/CFMEs were measured in potassium ferrocyanide solution (K₄Fe(CN)₆), by using a cyclic voltammetry (CV) and a chronoamperometry method. Compared with a bare CFME, a CNTs/CFME showed better CV curves with a higher distinguishable redox peak and response current; the higher the CNT content was, the better the CV curves were. Because the as-grown CNTs significantly enhanced the effective electrode area of CNTs/CFME, the contact area between the electrode and reactant was enlarged, further increasing the electrocatalytic active site density. Furthermore, the modified microelectrode displayed almost the same electrochemical behavior after 104 days, exhibiting remarkable stability and outstanding reproducibility.
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15
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Pereira AR, Luz RAS, Lima FCDA, Crespilho FN. Protein Oligomerization Based on Brønsted Acid Reaction. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00272] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andressa R. Pereira
- São
Carlos Institute of Chemistry, University of São Paulo, 13560-970 São Paulo, Brazil
| | - Roberto A. S. Luz
- São
Carlos Institute of Chemistry, University of São Paulo, 13560-970 São Paulo, Brazil
| | - Filipe C. D. A. Lima
- Federal Institute of Education, Science and Technology of São Paulo, Campus Matão, 15991-502 São Paulo, Brazil
| | - Frank N. Crespilho
- São
Carlos Institute of Chemistry, University of São Paulo, 13560-970 São Paulo, Brazil
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