1
|
Increasing the efficiency of microreactors utilizing two-phase hydrodynamic focusing. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
2
|
Montegiove N, Calzoni E, Pelosi D, Gammaitoni L, Barelli L, Emiliani C, Di Michele A, Cesaretti A. Optimizing Covalent Immobilization of Glucose Oxidase and Laccase on PV15 Fluoropolymer-Based Bioelectrodes. J Funct Biomater 2022; 13:jfb13040270. [PMID: 36547530 PMCID: PMC9785612 DOI: 10.3390/jfb13040270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/16/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022] Open
Abstract
Enzymatic biofuel cells (EBCs) represent a promising technology for biosensors, biodevices, and sustainable green energy applications, thanks to enzymes' high specificity and catalytic efficiency. Nevertheless, drawbacks such as limited output power and short lifetime have to be solved. Nowadays, research is addressed to the use of 3D electrode structures, but the high cost and the industrialization difficulties of such electrodes represent a key issue. The purpose of the paper is thus to describe the use of a low-cost commercial conductive polymer (Sigracell® PV15) as support for the covalent immobilization of glucose oxidase and laccase, for bioanode and biocathode fabrication, respectively. Efficient immobilization protocols were determined for the immobilized enzymes in terms of employed linkers and enzyme concentrations, resulting in significant enzymatic activities for units of area. The analysis focuses specifically on the optimization of the challenging immobilization of laccase and assessing its stability over time. In particular, an optimum activity of 23 mU/cm2 was found by immobilizing 0.18 mg/cm2 of laccase, allowing better performances, as for voltage output and electrochemical stability, and a direct electron transfer mechanism to be revealed for the fabricated biocathode. This study thus poses the basis for the viable development of low-cost functional EBC devices for biomedical applications.
Collapse
Affiliation(s)
- Nicolò Montegiove
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy
| | - Eleonora Calzoni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Dario Pelosi
- Department of Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia, Italy
| | - Luca Gammaitoni
- Department of Physics and Geology, University of Perugia, Via Pascoli, 06123 Perugia, Italy
| | - Linda Barelli
- Department of Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia, Italy
| | - Carla Emiliani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Alessandro Di Michele
- Department of Physics and Geology, University of Perugia, Via Pascoli, 06123 Perugia, Italy
| | - Alessio Cesaretti
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
- Correspondence: ; Tel.: +39-075-5857436
| |
Collapse
|
3
|
Sirkkunan D, Pingguan-Murphy B, Muhamad F. Directing Axonal Growth: A Review on the Fabrication of Fibrous Scaffolds That Promotes the Orientation of Axons. Gels 2021; 8:gels8010025. [PMID: 35049560 PMCID: PMC8775123 DOI: 10.3390/gels8010025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/19/2021] [Accepted: 12/23/2021] [Indexed: 12/17/2022] Open
Abstract
Tissues are commonly defined as groups of cells that have similar structure and uniformly perform a specialized function. A lesser-known fact is that the placement of these cells within these tissues plays an important role in executing its functions, especially for neuronal cells. Hence, the design of a functional neural scaffold has to mirror these cell organizations, which are brought about by the configuration of natural extracellular matrix (ECM) structural proteins. In this review, we will briefly discuss the various characteristics considered when making neural scaffolds. We will then focus on the cellular orientation and axonal alignment of neural cells within their ECM and elaborate on the mechanisms involved in this process. A better understanding of these mechanisms could shed more light onto the rationale of fabricating the scaffolds for this specific functionality. Finally, we will discuss the scaffolds used in neural tissue engineering (NTE) and the methods used to fabricate these well-defined constructs.
Collapse
|
4
|
Seo J, Jensen KH, Kim W. Concentration-Responsive Soft Valve for Osmotic Flow Control. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46015-46021. [PMID: 34544236 DOI: 10.1021/acsami.1c14282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We propose a novel osmotic soft valve consisting of an osmosis membrane and hydrogel films. In our osmotic valve system, material selectivity is determined by the osmosis membrane, and the hydrogel film, which deforms depending on the ion concentration of the surrounding solution, controls the passage area of the membrane. Independently controlling the material selectivity and permeability allowed us to design an osmotic soft valve with an osmotic flow rate that increases with osmotic pressure at low pressures but decreases with osmotic pressure at high pressures. We demonstrate a representative application of our hydrogel valve system in a portable power generator utilizing reverse electrodialysis (RED). As the permeability varied with concentration, the hydrogel valve was able to maintain the electric power of the RED for 30 min with only an ∼10% change. Our study provides techniques to build osmotic soft valves that can serve as gating membranes in various osmosis and dialysis systems.
Collapse
Affiliation(s)
- Jaedeok Seo
- Department of Mechanical Engineering, Sogang University, Seoul 04107, Republic of Korea
| | - Kaare H Jensen
- Department of Physics, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - Wonjung Kim
- Department of Mechanical Engineering, Sogang University, Seoul 04107, Republic of Korea
- Institute of Emergent Materials, Sogang University, Seoul 04107, Republic of Korea
| |
Collapse
|
5
|
Application of "Magnetic Anchors" to Align Collagen Fibres for Axonal Guidance. Gels 2021; 7:gels7040154. [PMID: 34698174 PMCID: PMC8544430 DOI: 10.3390/gels7040154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 11/21/2022] Open
Abstract
The use of neural scaffolds with a highly defined microarchitecture, fabricated with standard techniques such as electrospinning and microfluidic spinning, requires surgery for their application to the site of injury. To circumvent the risk associated with aciurgy, new strategies for treatment are sought. This has led to an increase in the quantity of research into injectable hydrogels in recent years. However, little research has been conducted into controlling the building blocks within these injectable hydrogels to produce similar scaffolds with a highly defined microarchitecture. “Magnetic particle string” and biomimetic amphiphile self-assembly are some of the methods currently available to achieve this purpose. Here, we developed a “magnetic anchor” method to improve the orientation of collagen fibres within injectable 3D scaffolds. This procedure uses GMNP (gold magnetic nanoparticle) “anchors” capped with CMPs (collagen mimetic peptides) that “chain” them to collagen fibres. Through the application of a magnetic field during the gelling process, these collagen fibres are aligned accordingly. It was shown in this study that the application of CMP functionalised GMNPs in a magnetic field significantly improves the alignment of the collagen fibres, which, in turn, improves the orientation of PC12 neurites. The growth of these neurite extensions, which were shown to be significantly longer, was also improved. The PC12 cells grown in collagen scaffolds fabricated using the “magnetic anchor” method shows comparable cellular viability to that of the untreated collagen scaffolds. This capability of remote control of the alignment of fibres within injectable collagen scaffolds opens up new strategic avenues in the research for treating debilitating neural tissue pathologies.
Collapse
|
6
|
Thakur S, Dasmahapatra AK, Bandyopadhyay D. Functional liquid droplets for analyte sensing and energy harvesting. Adv Colloid Interface Sci 2021; 294:102453. [PMID: 34120038 DOI: 10.1016/j.cis.2021.102453] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 05/25/2021] [Accepted: 05/25/2021] [Indexed: 02/06/2023]
Abstract
Over the past century, rapid miniaturization of technologies has helped in the development of efficient, flexible, portable, robust, and compact applications with minimal wastage of materials. In this direction, of late, the usage of mesoscale liquid droplets has emerged as an alternative platform because of the following advantages: (i) a droplet is incompressible and at the same time deformable, (ii) interfacial area of a spherical droplet is minimum for a given amount of mass; and (iii) a droplet interface allows facile mass, momentum, and energy transfer. Subsequently, such attributes have aided towards the design of diverse droplet-based microfluidic technologies. For example, the microdroplets have been utilized as micro-reactors, colorimetric or electrochemical (EC) sensors, drug-delivery vehicles, and energy harvesters. Further, a number of recently reported lab-on-a-chip technologies exploit the motility, storage, and mixing capacities of the microdroplets. In view of this background, the review initiates discussion by highlighting the different attributes of the microdroplets such as size, shape, surface to volume ratio, wettability, and contact line. Thereafter, the effects of the surface or body forces on the properties of the droplets have been elaborated. Finally, the different aspects of such liquid droplet systems towards technological adaptations in health care, sensing, and energy harvesting have been presented. The review concludes with a tight summary on the potential avenues for further developments.
Collapse
Affiliation(s)
- Siddharth Thakur
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Ashok Kumar Dasmahapatra
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India; Centre for Nanotechnology, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Dipankar Bandyopadhyay
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India; Centre for Nanotechnology, Indian Institute of Technology Guwahati, Assam 781039, India.
| |
Collapse
|
7
|
Navarro-Segarra M, Alday PP, Garcia D, Ibrahim OA, Kjeang E, Sabaté N, Esquivel JP. An Organic Redox Flow Cell-Inspired Paper-Based Primary Battery. CHEMSUSCHEM 2020; 13:2394-2401. [PMID: 32103609 DOI: 10.1002/cssc.201903511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 02/12/2020] [Indexed: 06/10/2023]
Abstract
A portable paper-based organic redox flow primary battery using sustainable quinone chemistry is presented. The compact prototype relies on the capillary forces of the paper matrix to develop a quasi-steady flow of the reactants through a pair of porous carbon electrodes without the need of external pumps. Co-laminar capillary flow allows operation Under mixed-media conditions, in which an alkaline anolyte and an acidic catholyte are employed. This feature enables higher electrochemical cell voltages during discharge operation and the utilization of a wider range of available species and electrolytes and provides the advantage to form a neutral or near-neutral pH as the electrolytes neutralize at the absorbent pad, which allows a safe disposal after use. The effects of the device design parameters have been studied to enhance battery features such as power output, operational time, and fuel utilization. The device achieves a faradaic efficiency of up to 98 %, which is the highest reported in a capillary-based electrochemical power source, as well as a cell capacity of up to 11.4 Ah L-1 cm-2 , comparable to state-of-the-art large-scale redox flow cells.
Collapse
Affiliation(s)
- Marina Navarro-Segarra
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), C/ dels Til⋅lers sn, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Perla Patricia Alday
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), C/ dels Til⋅lers sn, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - David Garcia
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), C/ dels Til⋅lers sn, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Omar A Ibrahim
- Fuel Cell Research Lab (FCReL), School of Mechatronic Systems Engineering, Simon Fraser University, V3T 0A3, Surrey, BC, Canada
| | - Erik Kjeang
- Fuel Cell Research Lab (FCReL), School of Mechatronic Systems Engineering, Simon Fraser University, V3T 0A3, Surrey, BC, Canada
| | - Neus Sabaté
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), C/ dels Til⋅lers sn, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010, Barcelona, Spain
| | - Juan Pablo Esquivel
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), C/ dels Til⋅lers sn, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| |
Collapse
|
8
|
Rewatkar P, Hitaishi VP, Lojou E, Goel S. Enzymatic fuel cells in a microfluidic environment: Status and opportunities. A mini review. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2019.106533] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
9
|
Perveen R, Inamuddin, Nasar A, Beenish, Asiri AM. Synthesis and characterization of a novel electron conducting biocomposite as biofuel cell anode. Int J Biol Macromol 2018; 106:755-762. [DOI: 10.1016/j.ijbiomac.2017.08.074] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 08/08/2017] [Accepted: 08/10/2017] [Indexed: 10/19/2022]
|
10
|
Perveen R, Inamuddin, Ul Haque S, Nasar A, Asiri AM, Md Ashraf G. Electrocatalytic Performance of Chemically Synthesized PIn-Au-SGO Composite toward Mediated Biofuel Cell Anode. Sci Rep 2017; 7:13353. [PMID: 29042654 PMCID: PMC5645452 DOI: 10.1038/s41598-017-13539-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 09/22/2017] [Indexed: 11/24/2022] Open
Abstract
The proposed work intended to make an intellectual contribution to the domain of green nanotechnology which emphasizes the chemical synthesis of a conducting nanocomposite based on the incorporation of gold nanoparticles (Au) into the redox matrix of polyindole (PIn) along with the subsequent improvement in the overall properties of the composite by the addition of sulfonated graphene oxide (SGO). The bioanode was developed by the deposition of the PIn-Au-SGO nanocomposite with subsequent immobilization of ferritin (Frt) and glucose oxidase (GOx) on the glassy carbon electrode (GC). The successful application of the PIn-Au-SGO nanocomposite toward the development of a ferritin-mediated glucose biofuel cell anode was studied by the electrochemical characterization of the constructed bioanode (GC-PIn-Au-SGO/Frt/GOx) for the bioelectrocatalytic oxidation of glucose. The maximum current density obtained by the modified bioanode was found to be 17.8 mA cm−2 at the limiting glucose concentration of 50 mM in 0.1 M K4Fe(CN)6 at a scan rate of 100 mVs−1. The lifetime of the concerned bioelectrode when stored at 4 °C was estimated to be 53 days approximately. The appreciable results of the structural and electrochemical characterization of the PIn-Au-SGO based bioelectrode reveal its potential applications exclusively in implantable medical devices.
Collapse
Affiliation(s)
- Ruma Perveen
- Advanced Functional Materials Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India
| | - Inamuddin
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia. .,Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P. O. Box 80203, Jeddah, 21589, Saudi Arabia.
| | - Sufia Ul Haque
- Advanced Functional Materials Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India
| | - Abu Nasar
- Advanced Functional Materials Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.,Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P. O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| |
Collapse
|
11
|
Extracellular-matrix-mediated osmotic pressure drives Vibrio cholerae biofilm expansion and cheater exclusion. Nat Commun 2017; 8:327. [PMID: 28835649 PMCID: PMC5569112 DOI: 10.1038/s41467-017-00401-1] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Accepted: 06/26/2017] [Indexed: 01/23/2023] Open
Abstract
Biofilms, surface-attached communities of bacteria encased in an extracellular matrix, are a major mode of bacterial life. How the material properties of the matrix contribute to biofilm growth and robustness is largely unexplored, in particular in response to environmental perturbations such as changes in osmotic pressure. Here, using Vibrio cholerae as our model organism, we show that during active cell growth, matrix production enables biofilm-dwelling bacterial cells to establish an osmotic pressure difference between the biofilm and the external environment. This pressure difference promotes biofilm expansion on nutritious surfaces by physically swelling the colony, which enhances nutrient uptake, and enables matrix-producing cells to outcompete non-matrix-producing cheaters via physical exclusion. Osmotic pressure together with crosslinking of the matrix also controls the growth of submerged biofilms and their susceptibility to invasion by planktonic cells. As the basic physicochemical principles of matrix crosslinking and osmotic swelling are universal, our findings may have implications for other biofilm-forming bacterial species.Most bacteria live in biofilms, surface-attached communities encased in an extracellular matrix. Here, Yan et al. show that matrix production in Vibrio cholerae increases the osmotic pressure within the biofilm, promoting biofilm expansion and physical exclusion of non-matrix producing cheaters.
Collapse
|
12
|
Sharifi F, Patel BB, Dzuilko AK, Montazami R, Sakaguchi DS, Hashemi N. Polycaprolactone Microfibrous Scaffolds to Navigate Neural Stem Cells. Biomacromolecules 2016; 17:3287-3297. [PMID: 27598294 DOI: 10.1021/acs.biomac.6b01028] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Fibrous scaffolds have shown promise in tissue engineering due to their ability to improve cell alignment and migration. In this paper, poly(ε-caprolactone) (PCL) fibers are fabricated in different sizes using a microfluidic platform. By using this approach, we demonstrated considerable flexibility in ability to control the size of the fibers. It was shown that the average diameter of the fibers was obtained in the range of 2.6-36.5 μm by selecting the PCL solution flow rate from 1 to 5 μL min-1 and the sheath flow rate from 20 to 400 μL min-1 in the microfluidic channel. The microfibers were used to create 3D microenvironments in order to investigate growth and differentiation of adult hippocampal stem/progenitor cells (AHPCs) in vitro. The results indicated that the 3D topography of the PCL substrates, along with chemical (extracellular matrix) guidance cues supported the adhesion, survival, and differentiation of the AHPCs. Additionally, it was found that the cell deviation angle for 44-66% of cells on different types of fibers was less than 10°. This reveals the functionality of PCL fibrous scaffolds for cell alignment important in applications such as reconnecting serious nerve injuries and guiding the direction of axon growth as well as regenerating blood vessels, tendons, and muscle tissue.
Collapse
Affiliation(s)
- Farrokh Sharifi
- Department of Mechanical Engineering, ‡Department of Genetics, Development and Cell Biology and Neuroscience, and §Center of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University , Ames, Iowa 50011, United States
| | - Bhavika B Patel
- Department of Mechanical Engineering, ‡Department of Genetics, Development and Cell Biology and Neuroscience, and §Center of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University , Ames, Iowa 50011, United States
| | - Adam K Dzuilko
- Department of Mechanical Engineering, ‡Department of Genetics, Development and Cell Biology and Neuroscience, and §Center of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University , Ames, Iowa 50011, United States
| | - Reza Montazami
- Department of Mechanical Engineering, ‡Department of Genetics, Development and Cell Biology and Neuroscience, and §Center of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University , Ames, Iowa 50011, United States
| | - Donald S Sakaguchi
- Department of Mechanical Engineering, ‡Department of Genetics, Development and Cell Biology and Neuroscience, and §Center of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University , Ames, Iowa 50011, United States
| | - Nastaran Hashemi
- Department of Mechanical Engineering, ‡Department of Genetics, Development and Cell Biology and Neuroscience, and §Center of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University , Ames, Iowa 50011, United States
| |
Collapse
|
13
|
Wen D, Eychmüller A. Enzymatic Biofuel Cells on Porous Nanostructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:4649-4661. [PMID: 27377976 DOI: 10.1002/smll.201600906] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 05/20/2016] [Indexed: 06/06/2023]
Abstract
Biofuel cells (BFCs) that utilize enzymes as catalysts represent a new sustainable and renewable energy technology. Numerous efforts have been directed to improve the performance of the enzymatic BFCs (EBFCs) with respect to power output and operational stability for further applications in portable power sources, self-powered electrochemical sensing, implantable medical devices, etc. The latest advances in EBFCs based on porous nanoarchitectures over the past 5 years are detailed here. Porous matrices from carbon, noble metals, and polymers promote the development of EBFCs through the electron transfer and mass transport benefits. Some key issues regarding how these nanostructured porous media improve the performance of EBFCs are also discussed.
Collapse
Affiliation(s)
- Dan Wen
- Physical Chemistry, TU Dresden, Bergstrasse 66b, 01062, Dresden, Germany
| | | |
Collapse
|
14
|
Inamuddin, Haque SU, Naushad M. Electrochemical studies of biocatalytic anode of sulfonated graphene/ferritin/glucose oxidase layer-by-layer biocomposite films for mediated electron transfer. Enzyme Microb Technol 2016; 87-88:29-36. [PMID: 27178792 DOI: 10.1016/j.enzmictec.2016.02.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 02/20/2016] [Accepted: 02/22/2016] [Indexed: 12/31/2022]
Abstract
In this study, a bioanode was developed by using layer-by-layer (LBL) assembly of sulfonated graphene (SG)/ferritin (Frt)/glucose oxidase (GOx). The SG/Frt biocomposite was used as an electron transfer elevator and mediator, respectively. Glucose oxidase (GOx) from Aspergillus niger was applied as a glucose oxidation biocatalyst. The electrocatalytic oxidation of glucose using GOx modified electrode increases with an increase in the concentration of glucose in the range of 10-50mM. The electrochemical measurements of the electrode was carried out by using cyclic voltammetry (CV) at different scan rates (20-100mVs(-1)) in 30mM of glucose solution prepared in 0.3M potassium ferrocyanide (K4Fe(CN)6) and linear sweep voltammetry (LSV). A saturation current density of 50±2mAcm(-2) at a scan rate of 100mVs(-1) for the oxidation of 30Mm glucose is achieved.
Collapse
Affiliation(s)
- Inamuddin
- Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India.
| | - Sufia Ul Haque
- Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
| | - Mu Naushad
- Department of Chemistry, College of Science, Building #5, King Saud University, Riyadh, Saudi Arabia
| |
Collapse
|
15
|
Abstract
The combination of microbial engineering and microfluidics is synergistic in nature. For example, microfluidics is benefiting from the outcome of microbial engineering and many reported point-of-care microfluidic devices employ engineered microbes as functional parts for the microsystems. In addition, microbial engineering is facilitated by various microfluidic techniques, due to their inherent strength in high-throughput screening and miniaturization. In this review article, we firstly examine the applications of engineered microbes for toxicity detection, biosensing, and motion generation in microfluidic platforms. Secondly, we look into how microfluidic technologies facilitate the upstream and downstream processes of microbial engineering, including DNA recombination, transformation, target microbe selection, mutant characterization, and microbial function analysis. Thirdly, we highlight an emerging concept in microbial engineering, namely, microbial consortium engineering, where the behavior of a multicultural microbial community rather than that of a single cell/species is delineated. Integrating the disciplines of microfluidics and microbial engineering opens up many new opportunities, for example in diagnostics, engineering of microbial motors, development of portable devices for genetics, high throughput characterization of genetic mutants, isolation and identification of rare/unculturable microbial species, single-cell analysis with high spatio-temporal resolution, and exploration of natural microbial communities.
Collapse
Affiliation(s)
- Songzi Kou
- Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
| | - Danhui Cheng
- Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Fei Sun
- Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
| | - I-Ming Hsing
- Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong. and Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| |
Collapse
|
16
|
Jamshidi R, Çinar S, Chen Y, Hashemi N, Montazami R. Transient bioelectronics: Electronic properties of silver microparticle-based circuits on polymeric substrates subjected to mechanical load. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23804] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Reihaneh Jamshidi
- Department of Mechanical Engineering; Iowa State University; Ames Iowa 50011
| | - Simge Çinar
- Department of Mechanical Engineering; Iowa State University; Ames Iowa 50011
| | - Yuanfen Chen
- Department of Mechanical Engineering; Iowa State University; Ames Iowa 50011
| | - Nastaran Hashemi
- Department of Mechanical Engineering; Iowa State University; Ames Iowa 50011
| | - Reza Montazami
- Department of Mechanical Engineering; Iowa State University; Ames Iowa 50011
| |
Collapse
|
17
|
Falkowski JM, Concannon NM, Yan B, Surendranath Y. Heazlewoodite, Ni3S2: A Potent Catalyst for Oxygen Reduction to Water under Benign Conditions. J Am Chem Soc 2015; 137:7978-81. [DOI: 10.1021/jacs.5b03426] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Joseph M. Falkowski
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Nolan M. Concannon
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Bing Yan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Yogesh Surendranath
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| |
Collapse
|
18
|
Vigolo D, Al-Housseiny TT, Shen Y, Akinlawon FO, Al-Housseiny ST, Hobson RK, Sahu A, Bedkowski KI, DiChristina TJ, Stone HA. Flow dependent performance of microfluidic microbial fuel cells. Phys Chem Chem Phys 2015; 16:12535-43. [PMID: 24832908 DOI: 10.1039/c4cp01086h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The integration of Microbial Fuel Cells (MFCs) in a microfluidic geometry can significantly enhance the power density of these cells, which would have more active bacteria per unit volume. Moreover, microfluidic MFCs can be operated in a continuous mode as opposed to the traditional batch-fed mode. Here we investigate the effect of fluid flow on the performance of microfluidic MFCs. The growth and the structure of the bacterial biofilm depend to a large extent on the shear stress of the flow. We report the existence of a range of flow rates for which MFCs can achieve maximum voltage output. When operated under these optimal conditions, the power density of our microfluidic MFC is about 15 times that of a similar-size batch MFC. Furthermore, this optimum suggests a correlation between the behaviour of bacteria and fluid flow.
Collapse
Affiliation(s)
- Daniele Vigolo
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Bîrzu A, Jia Y, Sankuratri V, Liu Y, Kiss IZ. Spatially distributed current oscillations with electrochemical reactions in microfluidic flow cells. Chemphyschem 2015; 16:555-66. [PMID: 25598243 DOI: 10.1002/cphc.201402631] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Indexed: 01/19/2023]
Abstract
The formation of spatiotemporal patterns is investigated by using a chemical reaction on the surface of a high-aspect-ratio metal electrode positioned in a flow channel. A partial differential equation model is formulated for nickel dissolution in sulfuric acid in a microfluidic flow channel. The model simulations predict oscillatory patterns that are spatially distributed on the electrode surface; the downstream portion of the metal surface exhibits large-amplitude, nonlinear oscillations of dissolution rates, whereas the upstream portion displays small-amplitude, harmonic oscillations with a phase delay. The features of the dynamical response can be interpreted by the dependence of local dynamics on the widely varying surface conditions and the presence of strong coupling. The patterns can be observed for both contiguous and segmented metal surfaces. The existence of spatially distributed current oscillations is confirmed in experiments with Ni electrodissolution in a microfluidic device. The results show the impact of a widely heterogeneous environment on the types of patterns of chemical reaction rates.
Collapse
Affiliation(s)
- Adrian Bîrzu
- Department of Chemistry, Al. I. Cuza University, 11 Carol I Blvd., 700506 Iaşi (Romania); Department of Chemistry, Saint Louis University, 3501 Laclede Ave., St. Louis, MO 63103 (USA).
| | | | | | | | | |
Collapse
|
20
|
Microscale microbial fuel cells: Advances and challenges. Biosens Bioelectron 2015; 69:8-25. [PMID: 25703724 DOI: 10.1016/j.bios.2015.02.021] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 02/10/2015] [Accepted: 02/12/2015] [Indexed: 12/12/2022]
Abstract
The next generation of sustainable energy could come from microorganisms; evidence that it can be seen with the given rise of Electromicrobiology, the study of microorganisms' electrical properties. Many recent advances in electromicrobiology stem from studying microbial fuel cells (MFCs), which are gaining acceptance as a future alternative "green" energy technology and energy-efficient wastewater treatment method. MFCs are powered by living microorganisms with clean and sustainable features; they efficiently catalyse the degradation of a broad range of organic substrates under natural conditions. There is also increasing interest in photosynthetic MFCs designed to harness Earth's most abundant and promising energy source (solar irradiation). Despite their vast potential and promise, however, MFCs and photosynthetic MFCs have not yet successfully translated into commercial applications because they demonstrate persistent performance limitations and bottlenecks associated with scaling up. Instead, microscale MFCs have received increasing attention as a unique platform for various applications such as powering small portable electronic elements in remote locations, performing fundamental studies of microorganisms, screening bacterial strains, and toxicity detection in water. Furthermore, the stacking of miniaturized MFCs has been demonstrated to offer larger power densities than a single macroscale MFC in terms of scaling up. In this overview, we discuss recent achievements in microscale MFCs as well as their potential applications. Further scientific and technological challenges are also reviewed.
Collapse
|
21
|
Goodrich PJ, Sharifi F, Hashemi N. Rapid prototyping of microchannels with surface patterns for fabrication of polymer fibers. RSC Adv 2015. [DOI: 10.1039/c5ra15154f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Microfluidic technology has provided innovative solutions to numerous problems, but the cost of fabricating microfluidic channels is impeding its expansion. We created multilayer microchannels significantly quicker and cheaper than current methods.
Collapse
Affiliation(s)
| | - Farrokh Sharifi
- Department of Mechanical Engineering
- Iowa State University
- Ames
- USA
| | - Nastaran Hashemi
- Department of Mechanical Engineering
- Iowa State University
- Ames
- USA
- Ames National Laboratory
| |
Collapse
|
22
|
Krieg T, Sydow A, Schröder U, Schrader J, Holtmann D. Reactor concepts for bioelectrochemical syntheses and energy conversion. Trends Biotechnol 2014; 32:645-55. [DOI: 10.1016/j.tibtech.2014.10.004] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/23/2014] [Accepted: 10/02/2014] [Indexed: 01/24/2023]
|
23
|
Bîrzu A, Coleman J, Kiss IZ. Highly disparate activity regions due to non-uniform potential distribution in microfluidic devices: Simulations and experiments. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
24
|
Blum Z, Pankratov D, Shleev S. Powering electronic contact lenses: current achievements, challenges, and perspectives. EXPERT REVIEW OF OPHTHALMOLOGY 2014. [DOI: 10.1586/17469899.2014.922873] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
25
|
Ozmaian M, Naghdabadi R. Modeling and simulation of the water gradient within a Nafion membrane. Phys Chem Chem Phys 2014; 16:3173-86. [DOI: 10.1039/c3cp54015d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|