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Trojanowicz M. Impact of nanotechnology on progress of flow methods in chemical analysis: A review. Anal Chim Acta 2023; 1276:341643. [PMID: 37573121 DOI: 10.1016/j.aca.2023.341643] [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: 03/15/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/14/2023]
Abstract
In evolution of instrumentation for analytical chemistry as crucial technological breakthroughs should be considered a common introduction of electronics with all its progress in integration, and then microprocessors which was followed by a widespread computerization. It is seems that a similar role can be attributed to the introduction of various elements of modern nanotechnology, observed with a fast progress since beginning of this century. It concerns all areas of the applications of analytical chemistry, including also progress in flow analysis, which are being developed since the middle of 20th century. Obviously, it should not be omitted the developed earlier and analytically applied planar structures like lipid membranes or self-assembled monolayers They had essential impact prior to discoveries of numerous extraordinary nanoparticles such as fullerenes, carbon nanotubes and graphene, or nanocrystalline semiconductors (quantum dots). Mostly, due to catalytic effects, significantly developed surface and the possibility of easy functionalization, their application in various stages of flow analytical procedures can significantly improve them. The application of new nanomaterials may be used for the development of new detection methods for flow analytical systems in macro-flow setups as well as in microfluidics and lateral flow immunoassay tests. It is also advantageous that quick flow conditions of measurements may be helpful in preventing unfavorable agglomeration of nanoparticles. A vast literature published already on this subject (e.g. almost 1000 papers about carbon nanotubes and flow-injection analytical systems) implies that for this reviews it was necessary to make an arbitrary selection of reported examples of this trend, focused mainly on achievements reported in the recent decade.
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Affiliation(s)
- Marek Trojanowicz
- Laboratory of Nuclear Analytical Techniques, Institute of Nuclear Chemistry and Technology, Warsaw, Poland; Department of Chemistry, University of Warsaw, Poland.
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2
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Sathirapongsasuti N, Panaksri A, Jusain B, Boonyagul S, Pechprasarn S, Jantanasakulwong K, Suksuwan A, Thongkham S, Tanadchangsaeng N. Enhancing protein trapping efficiency of graphene oxide-polybutylene succinate nanofiber membrane via molecular imprinting. Sci Rep 2023; 13:15398. [PMID: 37717111 PMCID: PMC10505162 DOI: 10.1038/s41598-023-42646-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/13/2023] [Indexed: 09/18/2023] Open
Abstract
Filtration of biological liquids has been widely employed in biological, medical, and environmental investigations due to its convenience; many could be performed without energy and on-site, particularly protein separation. However, most available membranes are universal protein absorption or sub-fractionation due to molecule sizes or properties. SPMA, or syringe-push membrane absorption, is a quick and easy way to prepare biofluids for protein evaluation. The idea of initiating SPMA was to filter proteins from human urine for subsequent proteomic analysis. In our previous study, we developed nanofiber membranes made from polybutylene succinate (PBS) composed of graphene oxide (GO) for SPMA. In this study, we combined molecular imprinting with our developed PBS fiber membranes mixed with graphene oxide to improve protein capture selectivity in a lock-and-key fashion and thereby increase the efficacy of protein capture. As a model, we selected albumin from human serum (ABH), a clinically significant urine biomarker, for proteomic application. The nanofibrous membrane was generated utilizing the electrospinning technique with PBS/GO composite. The PBS/GO solution mixed with ABH was injected from a syringe and transformed into nanofibers by an electric voltage, which led the fibers to a rotating collector spinning for fiber collection. The imprinting process was carried out by removing the albumin protein template from the membrane through immersion of the membrane in a 60% acetonitrile solution for 4 h to generate a molecular imprint on the membrane. Protein trapping ability, high surface area, the potential for producing affinity with proteins, and molecular-level memory were all evaluated using the fabricated membrane morphology, protein binding capacity, and quantitative protein measurement. This study revealed that GO is a controlling factor, increasing electrical conductivity and reducing fiber sizes and membrane pore areas in PBS-GO-composites. On the other hand, the molecular imprinting did not influence membrane shape, nanofiber size, or density. Human albumin imprinted membrane could increase the PBS-GO membrane's ABH binding capacity from 50 to 83%. It can be indicated that applying the imprinting technique in combination with the graphene oxide composite technique resulted in enhanced ABH binding capabilities than using either technique individually in membrane fabrication. The suitable protein elution solution is at 60% acetonitrile with an immersion time of 4 h. Our approach has resulted in the possibility of improving filter membranes for protein enrichment and storage in a variety of biological fluids.
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Affiliation(s)
- Nuankanya Sathirapongsasuti
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Ratchathewi, Bangkok, Thailand
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bang Pli, Samut Prakan, Thailand
| | - Anuchan Panaksri
- College of Biomedical Engineering, Rangsit University, Lak Hok, Pathumthani, Thailand
| | - Benjabhorn Jusain
- College of Biomedical Engineering, Rangsit University, Lak Hok, Pathumthani, Thailand
| | - Sani Boonyagul
- College of Biomedical Engineering, Rangsit University, Lak Hok, Pathumthani, Thailand
| | - Suejit Pechprasarn
- College of Biomedical Engineering, Rangsit University, Lak Hok, Pathumthani, Thailand
| | - Kittisak Jantanasakulwong
- School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Mae Hia, Chiang Mai, Thailand
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Klong Luang, Pathumthani, Thailand
| | - Acharee Suksuwan
- The Halal Science Center, Chulalongkorn University, Pathum Wan, Bangkok, Thailand
| | - Somprasong Thongkham
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Klong Luang, Pathumthani, Thailand
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Islam MS, Banik S, Collinson MM. Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2515. [PMID: 37764545 PMCID: PMC10535497 DOI: 10.3390/nano13182515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/22/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023]
Abstract
Bimetallic nanocomposites and nanoparticles have received tremendous interest recently because they often exhibit better properties than single-component materials. Improved electron transfer rates and the synergistic interactions between individual metals are two of the most beneficial attributes of these materials. In this review, we focus on bimetallic nanoporous gold (NPG) because of its importance in the field of electrochemical sensing coupled with the ease with which it can be made. NPG is a particularly important scaffold because of its unique properties, including biofouling resistance and ease of modification. In this review, several different methods to synthesize NPG, along with varying modification approaches are described. These include the use of ternary alloys, immersion-reduction (chemical, electrochemical, hybrid), co-electrodeposition-annealing, and under-potential deposition coupled with surface-limited redox replacement of NPG with different metal nanoparticles (e.g., Pt, Cu, Pd, Ni, Co, Fe, etc.). The review also describes the importance of fully characterizing these bimetallic nanocomposites and critically analyzing their structure, surface morphology, surface composition, and application in electrochemical sensing of chemical and biochemical species. The authors attempt to highlight the most recent and advanced techniques for designing non-enzymatic bimetallic electrochemical nanosensors. The review opens up a window for readers to obtain detailed knowledge about the formation and structure of bimetallic electrodes and their applications in electrochemical sensing.
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Affiliation(s)
| | | | - Maryanne M. Collinson
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA; (M.S.I.); (S.B.)
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Scandura G, Kumari P, Palmisano G, Karanikolos GN, Orwa J, Dumée LF. Nanoporous Dealloyed Metal Materials Processing and Applications─A Review. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Gabriele Scandura
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Research and Innovation Center on CO2 and Hydrogen (RICH), Khalifa University, Abu Dhabi, United Arab Emirates
| | - Priyanka Kumari
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Center for Membrane and Advanced Water Technology (CMAT), Khalifa University, Abu Dhabi, United Arab Emirates
- Research and Innovation Center on CO2 and Hydrogen (RICH), Khalifa University, Abu Dhabi, United Arab Emirates
| | - Giovanni Palmisano
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Center for Membrane and Advanced Water Technology (CMAT), Khalifa University, Abu Dhabi, United Arab Emirates
- Research and Innovation Center on CO2 and Hydrogen (RICH), Khalifa University, Abu Dhabi, United Arab Emirates
| | - Georgios N. Karanikolos
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Center for Membrane and Advanced Water Technology (CMAT), Khalifa University, Abu Dhabi, United Arab Emirates
- Research and Innovation Center on CO2 and Hydrogen (RICH), Khalifa University, Abu Dhabi, United Arab Emirates
- Center for Catalysis and Separations (CeCaS), Khalifa University, Abu Dhabi, United Arab Emirates
| | - Julius Orwa
- School of Engineering, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Ludovic F. Dumée
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Center for Membrane and Advanced Water Technology (CMAT), Khalifa University, Abu Dhabi, United Arab Emirates
- Research and Innovation Center on CO2 and Hydrogen (RICH), Khalifa University, Abu Dhabi, United Arab Emirates
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Liu S, Tian J, Zhang W. Fabrication and application of nanoporous anodic aluminum oxide: a review. NANOTECHNOLOGY 2021; 32:222001. [PMID: 0 DOI: 10.1088/1361-6528/abe25f] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 02/01/2021] [Indexed: 05/28/2023]
Abstract
Abstract
Due to the unique optical and electrochemical properties, large surface area, tunable properties, and high thermal stability, nanoporous anodic aluminum oxide (AAO) has become one of the most popular materials with a large potential to develop emerging applications in numerous areas, including biosensors, desalination, high-risk pollutants detection, capacitors, solar cell devices, photonic crystals, template-assisted fabrication of nanostructures, and so on. This review covers the mechanism of AAO formation, manufacturing technology, the relationship between the properties of AAO and fabrication conditions, and applications of AAO. Properties of AAO, like pore diameter, interpore distance, wall thickness, and anodized aluminum layer thickness, can be fully controlled by fabrication conditions, including electrolyte, applied voltage, anodizing and widening time. Generally speaking, the pore diameter of AAO will affect its specific application to a large extent. Moreover, manufacturing technology like one/two/multi step anodization, nanoimprint lithography anodization, and pulse/cyclic anodization also have a major impact on overall array arrangement. The review aims to provide a perspective overview of the relationship between applications and their corresponding AAO pore sizes, systematically. And the review also focuses on the strategies by which the structures and functions of AAO can be utilized.
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Novel multifunctional two layer catalytic activated titanium electrodes for various technological and environmental processes. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Porous Aluminium Oxide Coating for the Development of Spectroscopic Ellipsometry Based Biosensor: Evaluation of Human Serum Albumin Adsorption. COATINGS 2020. [DOI: 10.3390/coatings10111018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An electrochemically synthesised porous anodic aluminium oxide (pAAO) layer has been analysed by means of spectroscopic ellipsometry. The determined thickness of the formed pAAO layer obtained from spectroscopic ellipsometry measurements and modelling was 322.75 ± 0.12 nm. The radius of the nanopores estimated from SEM images was 39 ± 5 nm and the distance between nanopores was 107 ± 6 nm. The investigation of human serum albumin (HSA) adsorption on the pAAO coating showed that: (i) the protein concentration inside nanopores, depending on exposure time, approximately was from 200 up to 600 times higher than that determined in buffer solution; (ii) the initial phase of the adsorption process is slow (3.23 mg·cm−3·min−1) in comparison with the protein desorption rate (21.2 mg·cm−3·min−1) by means of pAAO layer washing; (iii) conventional washing with PBS solution and deionised water does not completely remove HSA molecules from pAAO pores and, therefore, the HSA concentration inside nanopores after 16 h of washing still remains almost 100 times higher than that present in PBS solution. Thus, due to such binding ability, HSA can be successfully used for the blocking of the remaining free surface, which is applied for the reduction in non-specific binding after the immobilisation of biorecognition molecules on the pAAO surface. It was determined that some desorption of HSA molecules from the pAAO layer occurred during the sensor’s surface washing step; however, HSA concentration inside the nanopores still remained rather high. These results recommend the continued application of pAAO in the development of biosensors.
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Tavakkoli N, Soltani N, Sadeghi M, Salavati H. Electrochemical determination of methimazole using nanoporous gold film electrode modified with MoO2 thin film. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Affiliation(s)
- Carola Hofmann
- Universität Regensburg Institut für Analytische Chemie, Chemo- und Biosensorik Universitätsstraße 31 93053 Regensburg Deutschland
| | - Axel Duerkop
- Universität Regensburg Institut für Analytische Chemie, Chemo- und Biosensorik Universitätsstraße 31 93053 Regensburg Deutschland
| | - Antje J. Baeumner
- Universität Regensburg Institut für Analytische Chemie, Chemo- und Biosensorik Universitätsstraße 31 93053 Regensburg Deutschland
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Hofmann C, Duerkop A, Baeumner AJ. Nanocontainers for Analytical Applications. Angew Chem Int Ed Engl 2019; 58:12840-12860. [DOI: 10.1002/anie.201811821] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/14/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Carola Hofmann
- University of Regensburg Institute of Analytical Chemistry, Chemo- and Biosensors Universitätsstrasse 31 93053 Regensburg Germany
| | - Axel Duerkop
- University of Regensburg Institute of Analytical Chemistry, Chemo- and Biosensors Universitätsstrasse 31 93053 Regensburg Germany
| | - Antje J. Baeumner
- University of Regensburg Institute of Analytical Chemistry, Chemo- and Biosensors Universitätsstrasse 31 93053 Regensburg Germany
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11
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Kani K, Kim J, Jiang B, Hossain MSA, Bando Y, Henzie J, Yamauchi Y. Electrochemical supermolecular templating of mesoporous Rh films. NANOSCALE 2019; 11:10581-10588. [PMID: 31119239 DOI: 10.1039/c9nr03644j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Making mesoporous rhodium (Rh) with traditional soft-templating methods is challenging because Rh has a high surface energy compared to other metals. Here, we report a synthetic concept to generate mesoporous Rh films (MRFs) by electrochemical co-deposition of Rh precursors and block copolymer micelles. We investigate the effect of deposition potentials and pH on the resulting mesoporous structures. Controlled electrodeposition enables us to conformally coat the entire surface of the electrode with a homogeneous mesoporous Rh film with any arbitrary thickness up to ∼840 nm. The average pore size of the MRF is ∼14 nm, with an average wall thickness of ∼9.5 nm. Since the MRFs are directly deposited on conducting substrates, they can be used as porous electrodes for various important electrocatalytic reactions. We examine the performance of these MRFs for the electrochemical methanol oxidation reaction (MOR) and find that they have a mass-normalized peak current density ∼4 times higher than a commercial Rh black (RhB) catalyst.
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Affiliation(s)
- Kenya Kani
- Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, Brisbane, QLD 4072, Australia.
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12
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Guney O, Gonçalves MST, Fonseca AM, Soares OSGP, Pereira MFR, Neves IC. Encapsulation and characterisation of cationic benzo[a]phenoxazines in zeolite HY. NEW J CHEM 2019. [DOI: 10.1039/c9nj03756j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Encapsulated benzo[a]phenoxazinium derivatives were synthesized inside of zeolite HY and exhibit excellent fluorescence emission behavior.
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Affiliation(s)
- Orhan Guney
- Department of Chemistry
- Istanbul Technical University
- Maslak
- Istanbul 34469
- Turkey
| | | | - António M. Fonseca
- Centre of Chemistry
- Chemistry Department
- University of Minho
- Campus de Gualtar
- 4710-057 Braga
| | - Olívia S. G. P. Soares
- Laboratory of Catalysis and Materials – Associate Laboratory LSRE/LCM
- Faculty of Engineering
- University of Porto
- 4200-465, Porto
- Portugal
| | - Manuel F. R. Pereira
- Laboratory of Catalysis and Materials – Associate Laboratory LSRE/LCM
- Faculty of Engineering
- University of Porto
- 4200-465, Porto
- Portugal
| | - Isabel C. Neves
- Centre of Chemistry
- Chemistry Department
- University of Minho
- Campus de Gualtar
- 4710-057 Braga
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Nacef M, Chelaghmia ML, Affoune AM, Pontié M. Electrochemical Investigation of Glucose on a Highly Sensitive Nickel-Copper Modified Pencil Graphite Electrode. ELECTROANAL 2018. [DOI: 10.1002/elan.201800622] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mouna Nacef
- Laboratoire d'Analyses Industrielles et Génie des Matériaux; Université 8 Mai 1945 Guelma BP 401; Guelma 24000 Algérie
| | - Mohamed Lyamine Chelaghmia
- Laboratoire d'Analyses Industrielles et Génie des Matériaux; Université 8 Mai 1945 Guelma BP 401; Guelma 24000 Algérie
| | - Abed Mohamed Affoune
- Laboratoire d'Analyses Industrielles et Génie des Matériaux; Université 8 Mai 1945 Guelma BP 401; Guelma 24000 Algérie
| | - Maxime Pontié
- Université de Bretagne Loire, Univ. d'Angers; Laboratoire GEIHP EA 3142; Institut de Biologie en Santé, PBH-IRIS; CHU, Université d'Angers; 4 Rue Larrey, 49933 Angers Cedex 9 Angers France
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Anbia M, Parvin Z, Sepehrian M. Application of modified nanoporous materials in ascorbic acid adsorption. PARTICULATE SCIENCE AND TECHNOLOGY 2018. [DOI: 10.1080/02726351.2018.1438546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Mansoor Anbia
- Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Zahra Parvin
- Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Mohammad Sepehrian
- Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran
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15
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Development of electrochemical biosensors with various types of zeolites. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0725-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Sposito AJ, Kurdekar A, Zhao J, Hewlett I. Application of nanotechnology in biosensors for enhancing pathogen detection. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2018. [PMID: 29528198 DOI: 10.1002/wnan.1512] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Rapid detection and identification of pathogenic microorganisms is fundamental to minimizing the spread of infectious disease, and informing clinicians on patient treatment strategies. This need has led to the development of enhanced biosensors that utilize state of the art nanomaterials and nanotechnology, and represent the next generation of diagnostics. A primer on nanoscale biorecognition elements such as, nucleic acids, antibodies, and their synthetic analogs (molecular imprinted polymers), will be presented first. Next the application of various nanotechnologies for biosensor transduction will be discussed, along with the inherent nanoscale phenomenon that leads to their improved performance and capabilities in biosensor systems. A future outlook on characterization and quality assurance, nanotoxicity, and nanomaterial integration into lab-on-a-chip systems will provide the closing thoughts. This article is categorized under: Diagnostic Tools > Diagnostic Nanodevices Diagnostic Tools > Biosensing.
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Affiliation(s)
- Alex J Sposito
- Laboratory of Molecular Virology, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland
| | - Aditya Kurdekar
- Laboratories for Nanoscience and Nanotechnology Research, Sri Sathya Sai Institute of Higher Learning, Anantapur, India
| | - Jiangqin Zhao
- Laboratory of Molecular Virology, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland
| | - Indira Hewlett
- Laboratory of Molecular Virology, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland
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Rajeev G, Prieto Simon B, Marsal LF, Voelcker NH. Advances in Nanoporous Anodic Alumina-Based Biosensors to Detect Biomarkers of Clinical Significance: A Review. Adv Healthc Mater 2018; 7. [PMID: 29205934 DOI: 10.1002/adhm.201700904] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 10/06/2017] [Indexed: 02/06/2023]
Abstract
There is a strong and growing demand for compact, portable, rapid, and low-cost devices to detect biomarkers of interest in clinical and point-of-care diagnostics. Such devices aid in early diagnosis of diseases without the need to rely on expensive and time-consuming large instruments in dedicated laboratories. Over the last decade, numerous biosensors have been developed for detection of a wide range of clinical biomarkers including proteins, nucleic acids, growth factors, and bacterial enzymes. Various transduction techniques have been reported based on biosensor technology that deliver substantial advances in analytical performance, including sensitivity, reproducibility, selectivity, and speed for monitoring a wide range of human health conditions. Nanoporous anodic alumina (NAA) has been used extensively for biosensing applications due to its inherent optical and electrochemical properties, ease of fabrication, large surface area, tunable properties, and high stability in aqueous environment. This review focuses on NAA-based biosensing systems for detection of clinically significant biomarkers using various detection techniques with the main focus being on electrochemical and optical transduction methods. The review covers an overview of the importance of biosensors for biomarkers detection, general (surface and structural) properties and fabrication of NAA, and NAA-based biomarker sensing systems.
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Affiliation(s)
| | - Beatriz Prieto Simon
- Future Industries Institute; Mawson Lakes SA 5095 Australia
- Monash Institute of Pharmaceutical Sciences; Monash University; Parkville VIC 3052 Australia
| | - Lluis F. Marsal
- Departamento de Ingeniería Electrónica; Eléctrica y Automática; Universitat Rovira i Virgili; Avda. Països Catalans 26 43007 Tarragona Spain
| | - Nicolas H. Voelcker
- Future Industries Institute; Mawson Lakes SA 5095 Australia
- Monash Institute of Pharmaceutical Sciences; Monash University; Parkville VIC 3052 Australia
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Yang G, Liang B, Zhu Q, Hu Y, Ye X. Comprehensive Study of the Effects of Nanopore Structures on Enzyme Activity for the Enzyme Based Electrochemical Biosensors Based on Molecular Simulation. J Phys Chem A 2016; 120:10043-10056. [DOI: 10.1021/acs.jpca.6b10206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guang Yang
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, ‡Cyrus Tang Center for Sensor Materials and Applications, and §State Key Laboratory of CAD & CG, Zhejiang University, Hangzhou 310027, P. R. China
| | - Bo Liang
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, ‡Cyrus Tang Center for Sensor Materials and Applications, and §State Key Laboratory of CAD & CG, Zhejiang University, Hangzhou 310027, P. R. China
| | - Qin Zhu
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, ‡Cyrus Tang Center for Sensor Materials and Applications, and §State Key Laboratory of CAD & CG, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yichuan Hu
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, ‡Cyrus Tang Center for Sensor Materials and Applications, and §State Key Laboratory of CAD & CG, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xuesong Ye
- Biosensor National Special Laboratory, College of Biomedical Engineering and Instrument Science, ‡Cyrus Tang Center for Sensor Materials and Applications, and §State Key Laboratory of CAD & CG, Zhejiang University, Hangzhou 310027, P. R. China
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Improvement of electrochemical reductive dechlorination of 2,4-dichlorophenoxyacetic acid using palladium catalysts prepared by a pulsed electrodeposition method. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.11.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Nanofertilisers, Nanopesticides and Nanosensors in Agriculture. NANOSCIENCE IN FOOD AND AGRICULTURE 1 2016. [DOI: 10.1007/978-3-319-39303-2_9] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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21
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Li W, Ouyang R, Zhang W, Zhou S, Yang Y, Ji Y, Yang Y, Feng K, Liang X, Xiao M, Miao Y. Single Walled Carbon Nanotube Sandwiched Ni-Ag Hybrid Nanoparticle Layers for the Extraordinary Electrocatalysis toward Glucose Oxidation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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An adhesive conducting electrode material based on commercial mesoporous titanium dioxide as a support for Horseradish peroxidase for bioelectrochemical applications. Talanta 2016; 146:689-93. [DOI: 10.1016/j.talanta.2015.06.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 06/13/2015] [Accepted: 06/17/2015] [Indexed: 11/22/2022]
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23
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Reverté L, Prieto-Simón B, Campàs M. New advances in electrochemical biosensors for the detection of toxins: Nanomaterials, magnetic beads and microfluidics systems. A review. Anal Chim Acta 2015; 908:8-21. [PMID: 26826685 DOI: 10.1016/j.aca.2015.11.050] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/25/2015] [Accepted: 11/28/2015] [Indexed: 01/01/2023]
Abstract
The use of nanotechnology in bioanalytical devices has special advantages in the detection of toxins of interest in food safety and environmental applications. The low levels to be detected and the small size of toxins justify the increasing number of publications dealing with electrochemical biosensors, due to their high sensitivity and design versatility. The incorporation of nanomaterials in their development has been exploited to further increase their sensitivity, providing simple and fast devices, with multiplexed capabilities. This paper gives an overview of the electrochemical biosensors that have incorporated carbon and metal nanomaterials in their configurations for the detection of toxins. Biosensing systems based on magnetic beads or integrated into microfluidics systems have also been considered because of their contribution to the development of compact analytical devices. The roles of these materials, the methods used for their incorporation in the biosensor configurations as well as the advantages they provide to the analyses are summarised.
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Affiliation(s)
- Laia Reverté
- IRTA, Carretera Poble Nou km. 5.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain
| | - Beatriz Prieto-Simón
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, SA 5095, Australia
| | - Mònica Campàs
- IRTA, Carretera Poble Nou km. 5.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain.
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24
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Lv X, Li Y, Yan T, Pang X, Cao W, Du B, Wu D, Wei Q. Electrochemiluminescence modified electrodes based on RuSi@Ru(bpy)32+ loaded with gold functioned nanoporous CO/Co3O4 for detection of mycotoxin deoxynivalenol. Biosens Bioelectron 2015; 70:28-33. [DOI: 10.1016/j.bios.2015.03.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/25/2015] [Accepted: 03/09/2015] [Indexed: 11/28/2022]
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25
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Etienne M, Zhang L, Vilà N, Walcarius A. Mesoporous Materials-Based Electrochemical Enzymatic Biosensors. ELECTROANAL 2015. [DOI: 10.1002/elan.201500172] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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26
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Tavakkoli N, Soltani N, Khorshidi E. Fabrication of Ru–Pd bimetallic monolayer on nanoporous gold film electrode with excellent electrocatalytic performance towards captopril oxidation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.219] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Pyeshkova VM, Dudchenko OY, Soldatkin OO, Kasap BO, Lagarde F, Kurç BA, Dzyadevych SV. Application of silicalite-modified electrode for the development of sucrose biosensor with improved characteristics. NANOSCALE RESEARCH LETTERS 2015; 10:149. [PMID: 25873843 PMCID: PMC4388068 DOI: 10.1186/s11671-015-0853-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 03/10/2015] [Indexed: 06/04/2023]
Abstract
The application of silicalite for improvement of working characteristics of conductometric enzyme biosensors for determination of sucrose was studied in this research. Biosensors based on different types of silicalite-modified electrodes were studied and compared according to their analytical characteristics. Polyethylenimine/glutaraldehyde/silicalite-modified biosensors showed higher sensitivity compared with others type of biosensors. Moreover, the polyethylenimine/glutaraldehyde/silicalite sucrose biosensors were characterized by high selectivity and signal reproducibility (relative standard deviation (RSD) = 2.78% for glucose measurements and RSD = 3.2% for sucrose measurements). Proposed biosensors were used for determination of sucrose in different samples of beverages. The obtained results had good correlation with results obtained by HPLC. Thus, polyethylenimine/glutaraldehyde/silicalite-modified biosensors have shown perspective characteristics for the development of effective conductometric enzyme biosensors.
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Affiliation(s)
- Viktoriya M Pyeshkova
- />Laboratory of Biomolecular Electronics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Str., 03680 Kyiv, Ukraine
- />Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, 01601 Kyiv, Ukraine
| | - Oleksandr Y Dudchenko
- />Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, 01601 Kyiv, Ukraine
| | - Oleksandr O Soldatkin
- />Laboratory of Biomolecular Electronics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Str., 03680 Kyiv, Ukraine
- />Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, 01601 Kyiv, Ukraine
| | - Berna Ozansoy Kasap
- />Micro and Nanotechnology Department, Middle East Technical University, Ankara, 06531 Turkey
| | - Florence Lagarde
- />Université Claude Bernard Lyon 1, Institut des Science Analytiques, 5 rue de la Doua 69100 Villeurbanne, Lyon, France
| | - Burcu Akata Kurç
- />Micro and Nanotechnology Department, Middle East Technical University, Ankara, 06531 Turkey
| | - Sergei V Dzyadevych
- />Laboratory of Biomolecular Electronics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Str., 03680 Kyiv, Ukraine
- />Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, 01601 Kyiv, Ukraine
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28
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Chen F, Jiang X, Kuang T, Chang L, Fu D, Yang J, Fan P, Zhong M. Polyelectrolyte/mesoporous silica hybrid materials for the high performance multiple-detection of pH value and temperature. Polym Chem 2015. [DOI: 10.1039/c5py00210a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous silica nanoparticles are modified by electrolyte polymer, giving significant ionic permselectivity under pH and/or temperature switches.
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Affiliation(s)
- Feng Chen
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
- Department of Biomedical Engineering
| | - Xiaoping Jiang
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Tairong Kuang
- Department of Biomedical Engineering
- The Ohio State University
- Colombus
- USA
- National Engineering Research Center of Novel Equipment for Polymer Processing
| | - Lingqian Chang
- Department of Biomedical Engineering
- The Ohio State University
- Colombus
- USA
| | - Dajiong Fu
- Department of Biomedical Engineering
- The Ohio State University
- Colombus
- USA
- National Engineering Research Center of Novel Equipment for Polymer Processing
| | - Jintao Yang
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Ping Fan
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Mingqiang Zhong
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
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29
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Chen SN, Li X, Han S, Liu JH, Zhao YY. Synthesis of surface-imprinted Ag nanoplates for detecting organic pollutants in water environments based on surface enhanced Raman scattering. RSC Adv 2015. [DOI: 10.1039/c5ra19528d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ag-molecularly imprinted polymer (MIP) hybrid composites (Ag@MIPs) were prepared for the ultra-sensitive detection of organic pollutants in water based on surface enhanced Raman scattering (SERS).
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Affiliation(s)
- S. N. Chen
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- PR China
| | - X. Li
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- PR China
- State Key Lab of Urban Water Resource and Environment
| | - S. Han
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- PR China
| | - J. H. Liu
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001
- PR China
| | - Y. Y. Zhao
- College of Chemistry
- Jilin Normal University
- Siping
- PR China
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30
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Jia L, Lawrence G, Balasubramanian VV, Choi G, Choy JH, Abdullah AM, Elzatahry A, Ariga K, Vinu A. Highly Ordered Nanoporous Carbon Films with Tunable Pore Diameters and their Excellent Sensing Properties. Chemistry 2014; 21:697-703. [DOI: 10.1002/chem.201404747] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Indexed: 11/10/2022]
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Electrochemical biosensor based on functional composite nanofibers for detection of K-ras gene via multiple signal amplification strategy. Anal Biochem 2014; 466:51-8. [PMID: 25173509 DOI: 10.1016/j.ab.2014.08.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 08/10/2014] [Accepted: 08/20/2014] [Indexed: 12/16/2022]
Abstract
An electrochemical biosensor based on functional composite nanofibers for hybridization detection of specific K-ras gene that is highly associated with colorectal cancer via multiple signal amplification strategy has been developed. The carboxylated multiwalled carbon nanotubes (MWCNTs) doped nylon 6 (PA6) composite nanofibers (MWCNTs-PA6) was prepared using electrospinning, which served as the nanosized backbone for thionine (TH) electropolymerization. The functional composite nanofibers [MWCNTs-PA6-PTH, where PTH is poly(thionine)] used as supporting scaffolds for single-stranded DNA1 (ssDNA1) immobilization can dramatically increase the amount of DNA attachment and the hybridization sensitivity. Through the hybridization reaction, a sandwich format of ssDNA1/K-ras gene/gold nanoparticle-labeled ssDNA2 (AuNPs-ssDNA2) was fabricated, and the AuNPs offered excellent electrochemical signal transduction. The signal amplification was further implemented by forming network-like thiocyanuric acid/gold nanoparticles (TA/AuNPs). A significant sensitivity enhancement was obtained; the detection limit was down to 30fM, and the discriminations were up to 54.3 and 51.9% between the K-ras gene and the one-base mismatched sequences including G/C and A/T mismatched bases, respectively. The amenability of this method to the analyses of K-ras gene from the SW480 colorectal cancer cell lysates was demonstrated. The results are basically consistent with those of the K-ras Kit (HRM: high-resolution melt). The method holds promise for the diagnosis and management of cancer.
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32
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Farghaly AA, Collinson MM. Electroassisted codeposition of sol-gel derived silica nanocomposite directs the fabrication of coral-like nanostructured porous gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5276-5286. [PMID: 24766096 DOI: 10.1021/la500614g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein, we report on a one-step coelectrodeposition method to form gold-silica nanocomposite materials from which high surface area nanostructured gold electrodes can be produced. The as-prepared Au-SiO2 films possess an interconnected three-dimensional porous framework with different silica-gold ratios depending on the deposition solutions and parameters. Chemical etching of the nanocomposite films using hydrofluoric acid resulted in the formation of nanostructured porous gold films with coral-like structures and pores in the nanometer range. The cross-linkage of the gold coral branches resulted in the generation of a porous framework. X-ray photoelectron spectroscopy confirms the complete removal of silica. Well-controlled surface area enhancement, film thickness, and morphology were achieved by manipulating the deposition parameters, such as potential, time, and gold ion and sol-gel monomer concentrations in the deposition solution. An enhancement in the surface area of the electrode up to 57 times relative to the geometric area has been achieved. The thickness of the as-prepared Au-SiO2 nanocomposite films is relatively high and varied from 8 to 15 μm by varying the applied deposition potential while the thickness of the coral-like nanostructured porous gold films ranged from 0.22 to 2.25 μm. A critical sol-gel monomer concentration (CSGC) was determined at which the deposited silica around the gold coral was able to stabilize the coral-like gold nanostructures, while below the CSGC, the coral-like gold nanostructures were unstable and the surface area of the nanostructured porous gold electrodes decreased.
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Affiliation(s)
- Ahmed A Farghaly
- Department of Chemistry, Virginia Commonwealth University , Richmond, Virginia 23284-2006, United States
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33
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Rong Y, Malpass-Evans R, Carta M, McKeown NB, Attard GA, Marken F. Intrinsically Porous Polymer Protects Catalytic Gold Particles for Enzymeless Glucose Oxidation. ELECTROANAL 2014. [DOI: 10.1002/elan.201400085] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Patel J, Radhakrishnan L, Zhao B, Uppalapati B, Daniels RC, Ward KR, Collinson MM. Electrochemical Properties of Nanostructured Porous Gold Electrodes in Biofouling Solutions. Anal Chem 2013; 85:11610-8. [PMID: 24245771 DOI: 10.1021/ac403013r] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jay Patel
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Logudurai Radhakrishnan
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Bo Zhao
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Badharinadh Uppalapati
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Rodney C. Daniels
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Kevin R. Ward
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Maryanne M. Collinson
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
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35
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Electrocatalytic oxidation of methanol by ZSM-5 nanozeolite-modified carbon paste electrode in alkaline medium. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0373-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Tian J, Xu J, Zhu F, Lu T, Su C, Ouyang G. Application of nanomaterials in sample preparation. J Chromatogr A 2013; 1300:2-16. [DOI: 10.1016/j.chroma.2013.04.010] [Citation(s) in RCA: 161] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 03/23/2013] [Accepted: 04/04/2013] [Indexed: 12/07/2022]
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37
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Synthesis of Nanoporous Gold Electrode and Its Application in Electrochemical Sensor. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1016/s1872-2040(13)60652-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Hasanzadeh M, Shadjou N, Omidinia E, Eskandani M, de la Guardia M. Mesoporous silica materials for use in electrochemical immunosensing. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2012.12.017] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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39
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Santos A, Kumeria T, Losic D. Nanoporous anodic aluminum oxide for chemical sensing and biosensors. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2012.11.007] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Abstract
Nanoporous gold prepared by dealloying Au:Ag alloys has recently become an attractive material in the field of analytical chemistry. This conductive material has an open, 3D porous framework consisting of nanosized pores and ligaments with surface areas that are 10s to 100s of times larger than planar gold of an equivalent geometric area. The high surface area coupled with an open pore network makes nanoporous gold an ideal support for the development of chemical sensors. Important attributes include conductivity, high surface area, ease of preparation and modification, tunable pore size, and a bicontinuous open pore network. In this paper, the fabrication, characterization, and applications of nanoporous gold in chemical sensing are reviewed specifically as they relate to the development of immunosensors, enzyme-based biosensors, DNA sensors, Raman sensors, and small molecule sensors.
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Walcarius A, Minteer SD, Wang J, Lin Y, Merkoçi A. Nanomaterials for bio-functionalized electrodes: recent trends. J Mater Chem B 2013; 1:4878-4908. [DOI: 10.1039/c3tb20881h] [Citation(s) in RCA: 261] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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