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Qian H, Moreira G, Vanegas D, Tang Y, Pola C, Gomes C, McLamore E, Bliznyuk N. Improving high throughput manufacture of laser-inscribed graphene electrodes via hierarchical clustering. Sci Rep 2024; 14:7980. [PMID: 38575717 PMCID: PMC10995179 DOI: 10.1038/s41598-024-57932-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 03/22/2024] [Indexed: 04/06/2024] Open
Abstract
Laser-inscribed graphene (LIG), initially developed for graphene supercapacitors, has found widespread use in sensor research and development, particularly as a platform for low-cost electrochemical sensing. However, batch-to-batch variation in LIG fabrication introduces uncertainty that cannot be adequately tracked during manufacturing process, limiting scalability. Therefore, there is an urgent need for robust quality control (QC) methodologies to identify and select similar and functional LIG electrodes for sensor fabrication. For the first time, we have developed a statistical workflow and an open-source hierarchical clustering tool for QC analysis in LIG electrode fabrication. The QC process was challenged with multi-operator cyclic voltammetry (CV) data for bare and metalized LIG. As a proof of concept, we employed the developed QC process for laboratory-scale manufacturing of LIG-based biosensors. The study demonstrates that our QC process can rapidly identify similar LIG electrodes from large batches (n ≥ 36) of electrodes, leading to a reduction in biosensor measurement variation by approximately 13% compared to the control group without QC. The statistical workflow and open-source code presented here provide a versatile toolkit for clustering analysis, opening a pathway toward scalable manufacturing of LIG electrodes in sensing. In addition, we establish a data repository for further study of LIG variation.
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Affiliation(s)
- Hanyu Qian
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Geisianny Moreira
- Department of Agricultural Sciences, Clemson University, Clemson, SC, 29634, USA
| | - Diana Vanegas
- Environmental Engineering and Earth Sciences Department of Engineering, Clemson University, Clemson, SC, 29634, USA
| | - Yifan Tang
- Department of Plant and Environmental Science, Clemson University, Clemson, SC, 29634, USA
| | - Cicero Pola
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Carmen Gomes
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Eric McLamore
- Department of Agricultural Sciences, Clemson University, Clemson, SC, 29634, USA.
- Environmental Engineering and Earth Sciences Department of Engineering, Clemson University, Clemson, SC, 29634, USA.
| | - Nikolay Bliznyuk
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA.
- Departments of Statistics, Biostatistics and Electrical and Computer Engineering, University of Florida, Gainesville, FL, 32611, USA.
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Cardoso RM, Pereira TS, Santos DMD, Migliorini FL, Mattoso LH, Correa DS. Laser-induced graphitized electrodes enabled by a 3D printer/diode laser setup for voltammetric detection of hormones. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Kumar A, Barbhuiya NH, Jashrapuria K, Dixit N, Arnusch CJ, Singh SP. Magnéli-Phase Ti 4O 7-Doped Laser-Induced Graphene Surfaces and Filters for Pollutant Degradation and Microorganism Removal. ACS Appl Mater Interfaces 2022; 14:52448-52458. [PMID: 36349685 DOI: 10.1021/acsami.2c10348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Laser-induced graphene (LIG) has recently become a point of attraction globally as an environmentally friendly method to fabricate graphene foam in a single step using a CO2 laser. The electrical properties of LIG are studied in different environmental applications, such as bacterial inactivation, antibiofouling, and pollutant sensing. Furthermore, metal or nonmetal doping of graphene enhances its catalytical performance in pollutant degradation and decontamination. Magnéli phase (TinO2n-1) is a substoichiometric titanium oxide known for its high electrocatalytic behavior and chemical inertness and is being explored as a membrane or electrode material for environmental decontamination. Here, we show the fabrication and characterization of LIG-Magnéli-phase (Ti4O7) titanium suboxide composites as electrodes and filters on poly(ether sulfone). Unlike undoped LIG electrodes, the doped Ti4O7-LIG electrodes exhibit enhanced electrochemical activity, as demonstrated in electrochemical characterization using cyclic voltammetry and electrochemical impedance spectroscopy. Due to the in situ generation of hydroxyl radicals on the surface, the doped electrodes exhibit increase in methylene blue degradation and microorganism removal. Effects of voltage and doping were examined, resulting in a clear trend of degradation and decontamination performance proportional to the doping concentration and applied voltage giving the best result at 2.5 V for 10% Ti4O7 doping. The LIG-Ti4O7 surfaces also showed biofilm inhibition against mixed bacterial culture. The flow-through filtration using a LIG-Ti4O7 conductive filter showed complete bacterial killing with 6 log removal in the permeate at 2.5 V, an enhancement of ∼2.5 log compared to undoped LIG filters at a flow rate of ∼500 L m-2 h-1. The facile fabrication of Ti4O7-doped LIG with enhanced electrochemical properties can be effectively used for energy and environmental applications.
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Affiliation(s)
- Ashish Kumar
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai400076, India
| | - Najmul H Barbhuiya
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai400076, India
| | - Kritika Jashrapuria
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai400076, India
| | - Nandini Dixit
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai400076, India
| | - Christopher J Arnusch
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion8499000, Israel
| | - Swatantra P Singh
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai400076, India
- Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Mumbai400076, India
- Centre for Research in Nanotechnology & Science (CRNTS), Indian Institute of Technology Bombay, Mumbai400076, India
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Rodrigues J, Pereira SO, Zanoni J, Rodrigues C, Brás M, Costa FM, Monteiro T. ZnO Transducers for Photoluminescence-Based Biosensors: A Review. Chemosensors 2022; 10:39. [DOI: 10.3390/chemosensors10020039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Zinc oxide (ZnO) is a wide bandgap semiconductor material that has been widely explored for countless applications, including in biosensing. Among its interesting properties, its remarkable photoluminescence (PL), which typically exhibits an intense signal at room temperature (RT), arises as an extremely appealing alternative transduction approach due to the high sensitivity of its surface properties, providing high sensitivity and selectivity to the sensors relying on luminescence output. Therefore, even though not widely explored, in recent years some studies have been devoted to the use of the PL features of ZnO as an optical transducer for detection and quantification of specific analytes. Hence, in the present paper, we revised the works that have been published in the last few years concerning the use of ZnO nanostructures as the transducer element in different types of PL-based biosensors, namely enzymatic and immunosensors, towards the detection of analytes relevant for health and environment, like antibiotics, glucose, bacteria, virus or even tumor biomarkers. A comprehensive discussion on the possible physical mechanisms that rule the optical sensing response is also provided, as well as a warning regarding the effect that the buffer solution may play on the sensing experiments, as it was seen that the use of phosphate-containing solutions significantly affects the stability of the ZnO nanostructures, which may conduct to misleading interpretations of the sensing results and unreliable conclusions.
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Filoni C, Shirzadi B, Menegazzo M, Martinelli E, Di Natale C, Li Bassi A, Magagnin L, Duò L, Bussetti G. Compared EC-AFM Analysis of Laser-Induced Graphene and Graphite Electrodes in Sulfuric Acid Electrolyte. Molecules 2021; 26:7333. [PMID: 34885914 PMCID: PMC8659228 DOI: 10.3390/molecules26237333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/17/2021] [Accepted: 11/29/2021] [Indexed: 11/19/2022] Open
Abstract
Flexible and economic sensor devices are the focus of increasing interest for their potential and wide applications in medicine, food analysis, pollution, water quality, etc. In these areas, the possibility of using stable, reproducible, and pocket devices can simplify the acquisition of data. Among recent prototypes, sensors based on laser-induced graphene (LIGE) on Kapton represent a feasible choice. In particular, LIGE devices are also exploited as electrodes for sensing in liquids. Despite a characterization with electrochemical (EC) methods in the literature, a closer comparison with traditional graphite electrodes is still missing. In this study, we combine atomic force microscopy with an EC cell (EC-AFM) to study, in situ, electrode oxidation reactions when LIGE or other graphite samples are used as anodes inside an acid electrolyte. This investigation shows the quality and performance of the LIGE electrode with respect to other samples. Finally, an ex situ Raman spectroscopy analysis allows a detailed chemical analysis of the employed electrodes.
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Affiliation(s)
- Claudia Filoni
- Department of Physics, Politecnico di Milano, p.za Leonardo da Vinci 32, I-20133 Milan, Italy; (B.S.); (M.M.); (L.D.); (G.B.)
| | - Bahram Shirzadi
- Department of Physics, Politecnico di Milano, p.za Leonardo da Vinci 32, I-20133 Milan, Italy; (B.S.); (M.M.); (L.D.); (G.B.)
| | - Marco Menegazzo
- Department of Physics, Politecnico di Milano, p.za Leonardo da Vinci 32, I-20133 Milan, Italy; (B.S.); (M.M.); (L.D.); (G.B.)
| | - Eugenio Martinelli
- Department of Electronic Engineering, University of Rome Tor Vergata, v. del Politecnico, I-00133 Rome, Italy; (E.M.); (C.D.N.)
| | - Corrado Di Natale
- Department of Electronic Engineering, University of Rome Tor Vergata, v. del Politecnico, I-00133 Rome, Italy; (E.M.); (C.D.N.)
| | - Andrea Li Bassi
- Department of Energy, Politecnico di Milano, v. Ponzio 34/3, I-20133 Milan, Italy;
| | - Luca Magagnin
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, v. Mancinelli 7, I-20131 Milan, Italy;
| | - Lamberto Duò
- Department of Physics, Politecnico di Milano, p.za Leonardo da Vinci 32, I-20133 Milan, Italy; (B.S.); (M.M.); (L.D.); (G.B.)
| | - Gianlorenzo Bussetti
- Department of Physics, Politecnico di Milano, p.za Leonardo da Vinci 32, I-20133 Milan, Italy; (B.S.); (M.M.); (L.D.); (G.B.)
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