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Zhu F, Liu Z, Wu X, Xu D, Li Q, Chen X, Pang W, Duan X, Wang Y. Enhanced on-Chip modification and intracellular hydrogen peroxide detection via gigahertz acoustic streaming microfluidic platform. ULTRASONICS SONOCHEMISTRY 2023; 100:106618. [PMID: 37769590 PMCID: PMC10543187 DOI: 10.1016/j.ultsonch.2023.106618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/03/2023]
Abstract
Developing effective strategies for the flexible control of fluid is vital for microfluidic electrochemical biosensing. In this study, a gigahertz (GHz) acoustic streaming (AS) based sonoelectrochemical system was developed to realize an on-chip surface modification and sensitive hydrogen peroxide (H2O2) detection from living cells. The flexible and controlled fluid surrounding the electrochemical chip was optimized theoretically and applied in the sonoelectrochemical deposition of Au nanoparticles (AuNPs) first. Under the steady and fast flow stimulus of AS, AuNPs could be synthesized with a smaller and evener size distribution than the normal condition, allowing AuNPs to show an excellent peroxidase-like activity. Moreover, the AS also accelerated the mass transport of target molecules and improved the catalytic rate, leading to the enhancement of H2O2 detection, with an extremely low detection limit of 32 nM and a high sensitivity of 4.34 μA/ (mM·mm2). Finally, this system was successfully applied in tracking H2O2 release from different cell lines to distinguish the cancer cells from normal cells. This study innovatively integrated the surface modification and molecules detection process on a chip, and also proposed a simple but sensitive platform for microfluidic biosensing application.
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Affiliation(s)
- Feng Zhu
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Zeyu Liu
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Xiaoyu Wu
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Die Xu
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Quanning Li
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Xuejiao Chen
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Wei Pang
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Xuexin Duan
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Yanyan Wang
- State Key Laboratory of Precision Measuring Technology and Instruments, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China.
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On the hydrogen storage performance of Cu-doped and Cu-decorated graphene quantum dots: a computational study. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02680-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Fuchs D, Bayer BC, Gupta T, Szabo GL, Wilhelm RA, Eder D, Meyer JC, Steiner S, Gollas B. Electrochemical Behavior of Graphene in a Deep Eutectic Solvent. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40937-40948. [PMID: 32805835 PMCID: PMC7496728 DOI: 10.1021/acsami.0c11467] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Graphene electrodes and deep eutectic solvents (DESs) are two emerging material systems that have individually shown highly promising properties in electrochemical applications. To date, however, it has not been tested whether the combination of graphene and DESs can yield synergistic effects in electrochemistry. We therefore study the electrochemical behavior of a defined graphene monolayer of centimeter-scale, which was produced by chemical vapor deposition and transferred onto insulating SiO2/Si supports, in the common DES choline chloride/ethylene glycol (12CE) under typical electrochemical conditions. We measure the graphene potential window in 12CE and estimate the apparent electron transfer kinetics of an outer-sphere redox couple. We further explore the applicability of the 12CE electrolyte to fabricate nanostructured metal (Zn) and metalloid (Ge) hybrids with graphene by electrodeposition. By comparing our graphene electrodes with common bulk glassy carbon electrodes, a key finding we make is that the two-dimensional nature of the graphene electrodes has a clear impact on DES-based electrochemistry. Thereby, we provide a first framework toward rational optimization of graphene-DES systems for electrochemical applications.
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Affiliation(s)
- David Fuchs
- Institute
for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, Graz A-8010, Austria
| | - Bernhard C. Bayer
- Institute
of Materials Chemistry, Vienna University
of Technology (TU Wien), Getreidemarkt 9, Vienna A-1060, Austria
- Faculty
of Physics, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria
| | - Tushar Gupta
- Institute
of Materials Chemistry, Vienna University
of Technology (TU Wien), Getreidemarkt 9, Vienna A-1060, Austria
| | - Gabriel L. Szabo
- Institute
of Applied Physics, Vienna University of
Technology (TU Wien), Wiedner Hauptstraße 8-10, Vienna A-1040, Austria
| | - Richard A. Wilhelm
- Institute
of Applied Physics, Vienna University of
Technology (TU Wien), Wiedner Hauptstraße 8-10, Vienna A-1040, Austria
| | - Dominik Eder
- Institute
of Materials Chemistry, Vienna University
of Technology (TU Wien), Getreidemarkt 9, Vienna A-1060, Austria
| | - Jannik C. Meyer
- Faculty
of Physics, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria
| | - Sandra Steiner
- Institute
for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, Graz A-8010, Austria
| | - Bernhard Gollas
- Institute
for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, Graz A-8010, Austria
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Kirchner EM, Hirsch T. Recent developments in carbon-based two-dimensional materials: synthesis and modification aspects for electrochemical sensors. Mikrochim Acta 2020; 187:441. [PMID: 32656597 PMCID: PMC7354370 DOI: 10.1007/s00604-020-04415-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/24/2020] [Indexed: 12/12/2022]
Abstract
This review (162 references) focuses on two-dimensional carbon materials, which include graphene as well as its allotropes varying in size, number of layers, and defects, for their application in electrochemical sensors. Many preparation methods are known to yield two-dimensional carbon materials which are often simply addressed as graphene, but which show huge variations in their physical and chemical properties and therefore on their sensing performance. The first section briefly reviews the most promising as well as the latest achievements in graphene synthesis based on growth and delamination techniques, such as chemical vapor deposition, liquid phase exfoliation via sonication or mechanical forces, as well as oxidative procedures ranging from chemical to electrochemical exfoliation. Two-dimensional carbon materials are highly attractive to be integrated in a wide field of sensing applications. Here, graphene is examined as recognition layer in electrochemical sensors like field-effect transistors, chemiresistors, impedance-based devices as well as voltammetric and amperometric sensors. The sensor performance is evaluated from the material's perspective of view and revealed the impact of structure and defects of the 2D carbon materials in different transducing technologies. It is concluded that the performance of 2D carbon-based sensors is strongly related to the preparation method in combination with the electrical transduction technique. Future perspectives address challenges to transfer 2D carbon-based sensors from the lab to the market. Graphical abstract Schematic overview from synthesis and modification of two-dimensional carbon materials to sensor application.
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Affiliation(s)
- Eva-Maria Kirchner
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040, Regensburg, Germany
| | - Thomas Hirsch
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040, Regensburg, Germany.
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de Alwis C, Leftwich TR, Mukherjee P, Denofre A, Perrine KA. Spontaneous selective deposition of iron oxide nanoparticles on graphite as model catalysts. NANOSCALE ADVANCES 2019; 1:4729-4744. [PMID: 36133117 PMCID: PMC9418714 DOI: 10.1039/c9na00472f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/24/2019] [Indexed: 06/12/2023]
Abstract
Iron oxide nanomaterials participate in redox processes that give them ideal properties for their use as earth-abundant catalysts. Fabricating nanocatalysts for such applications requires detailed knowledge of the deposition and growth. We report the spontaneous deposition of iron oxide nanoparticles on HOPG in defect areas and on step edges from a metal precursor solution. To study the nucleation and growth of iron oxide nanoparticles, tailored defects were created on the surface of HOPG using various ion sources that serve as the target sites for iron oxide nucleation. After solution deposition and annealing, the iron oxide nanoparticles were found to nucleate and coalesce at 400 °C. AFM revealed that the particles on the sp3 carbon sites enabled the nanoparticles to aggregate into larger particles. The iron oxide nanoparticles were characterized as having an Fe3+ oxidation state and two different oxygen species, Fe-O and Fe-OH/Fe-OOH, as determined by XPS. STEM imaging and EDS mapping confirmed that the majority of the nanoparticles grown were converted to hematite after annealing at 400 °C. A mechanism of spontaneous and selective deposition on the HOPG surface and transformation of the iron oxide nanoparticles is proposed. These results suggest a simple method for growing nanoparticles as a model catalyst.
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Affiliation(s)
- Chathura de Alwis
- Department of Chemistry, Michigan Technological University Houghton MI 49931 USA
| | - Timothy R Leftwich
- Department of Material Science & Engineering, Michigan Technological University Houghton MI 49931 USA
| | - Pinaki Mukherjee
- Department of Material Science & Engineering, Michigan Technological University Houghton MI 49931 USA
| | - Alex Denofre
- Department of Chemistry, Michigan Technological University Houghton MI 49931 USA
| | - Kathryn A Perrine
- Department of Chemistry, Michigan Technological University Houghton MI 49931 USA
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Applications of carbon nanotubes and graphene for third-generation solar cells and fuel cells. NANO MATERIALS SCIENCE 2019. [DOI: 10.1016/j.nanoms.2019.03.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Semenova D, Gernaey KV, Silina YE. Exploring the potential of electroless and electroplated noble metal-semiconductor hybrids within bio- and environmental sensing. Analyst 2018; 143:5646-5669. [PMID: 30328420 DOI: 10.1039/c8an01632a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Over the last two decades, the rapid development and widespread application of nanomaterials has significantly influenced research in various fields, including analytical chemistry and biosensing technologies. In particular, the simple functionalization and tuning of noble metal nanoparticle (NP) surface chemistry resulted in the development of a series of novel biosensing platforms with quick read-out and enhanced capabilities towards specific analyte detection. Moreover, noble metal NPs possess a number of unique properties, viz. high surface-to-volume ratio and excellent spectral, optical, thermal, electrical and catalytic characteristics. This manuscript provides an elaborate review on galvanic noble metal NPs deposited onto semiconductor surfaces, from the preparation stage towards their application in biosensors and gas sensing. Two types of deposition approaches, viz. galvanic displacement/electroless and conventional electroplating, are introduced and compared. Furthermore, the analytical merit of hybrid nanomaterials towards the improvement of sensing abilities is highlighted. Finally, some limitations and challenges related to progress in the development and application of analytical devices based on electroless and electroplated noble metal NPs-semiconductor hybrids (NMNPsHs) in biochemical and environmental sensing are discussed.
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Affiliation(s)
- D Semenova
- Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads, Building 229, 2800 Kgs. Lyngby, Denmark
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Malček M, Bučinský L, Teixeira F, Cordeiro MNDS. Detection of simple inorganic and organic molecules over Cu-decorated circumcoronene: a combined DFT and QTAIM study. Phys Chem Chem Phys 2018; 20:16021-16032. [PMID: 29850712 DOI: 10.1039/c8cp02035c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Nowadays graphene materials have attracted a considerable attention because of their potential utilization as gas sensors, biosensors, or adsorbents. Doping or decorating the graphene surface with transition metals can significantly tune its electronic properties and chemical reactivity. Circumcoronene, being a polyaromatic hydrocarbon composed of 19 benzene rings, can be used as a model system of a tiny graphene quantum dot. The adsorption of a set of small molecules (water, hydrogen peroxide, methanol, ethanol, and oxygen) over the copper-decorated circumcoronene was theoretically investigated using density functional theory (DFT) and Bader's quantum theory of atoms in molecules (QTAIM). Following the obtained B3LYP energies, the adsorption of O2 and the chemisorption of H2O2 were found to be energetically the most favorable, with energetic outcomes of -3.6 eV and -3.7 eV, respectively. Moreover, an H2O2 molecule was decomposed during the chemisorption on the Cu atom to form a neutral Cu(OH)2 molecule. Changes in the electronic structure of the studied systems, in particular the oxidation of copper, after the adsorption were investigated within the framework of QTAIM (e.g., charges, bond critical points, and delocalization indices) and partial density of states (PDOS) analysis. The results of this study suggest the suitability of the Cu-decorated graphene materials as adsorbents and/or gas sensors in practical applications.
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Affiliation(s)
- Michal Malček
- LAQV@REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
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Dalbanbay A, Nefedov A, Nurmanova R, Nauryzbayev M. Study of the influence of surface-active substances on the initial stage of copper electrodeposition. CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY 2017. [DOI: 10.15328/cb890] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In this research, the effect of surface-active substances (CMC and DFP) on the electrolysis of copper by cyclic voltammetry (CVA) and chronoamperometric methods was studied. The working electrode was a glassy carbon electrode. Studies show that in the acid solution of copper sulfate (10-2 M CuSO4 + 0.5 M H2SO4), the three-dimensional electrochemical deposition of copper occurs by the mechanism of instantaneous nucleation. The added surface active substances affect the dischargeionization process, the standard electroreduction potential is shifted to the negative side. The added DFP reduces the cathodic peak current, and the addition of CMC results in its increase. At the deposition potentials corresponding to the regions up to the CVA peak current (here, still, the mixed electrodeposition kinetics), the number of nuclei formed is greater for a pure solution, but at current decay potentials, where the diffusion regime takes place, the nuclei population density (NPD) is higher for solutions with surfactants. The most powerful effect here is caused by the addition of DFP. In the case of mixed additives, the NPD values are close to those of the CMC, obviously indicating the preferential adsorption of CMC, whereas the DFP as complexes with copper ions is closer to the near-electrode region.
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Farquhar AK, Brooksby PA, Dryfe RA, Downard AJ. Controlled electrodeposition of gold nanoparticles onto copper-supported few-layer graphene in non-aqueous conditions. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.03.206] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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