1
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Gopalakrishnan S, Thomas R, Sedaghat S, Krishnakumar A, Khan S, Meyer T, Ajieren H, Nejati S, Wang J, Verma MS, Irazoqui P, Rahimi R. Smart capsule for monitoring inflammation profile throughout the gastrointestinal tract. BIOSENSORS & BIOELECTRONICS: X 2023; 14:100380. [PMID: 37799507 PMCID: PMC10552446 DOI: 10.1016/j.biosx.2023.100380] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Inflammatory bowel disease (IBD) has become alarmingly prevalent in the last two decades affecting 6.8 million people worldwide with a starkly high relapse rate of 40% within 1 year of remission. Existing visual endoscopy techniques rely on subjective assessment of images that are error-prone and insufficient indicators of early-stage IBD, rendering them unsuitable for frequent and quantitative monitoring of gastrointestinal health necessary for detecting regular relapses in IBD patients. To address these limitations, we have implemented a miniaturized smart capsule (2.2 cm × 11 mm) that allows monitoring reactive oxygen species (ROS) levels as a biomarker of inflammation for quantitative and frequent profiling of inflammatory lesions throughout the gastrointestinal tract. The capsule is composed of a pH and oxidation reduction potential (ORP) sensor to track the capsule's location and ROS levels throughout the gastrointestinal tract, respectively, and an optimized electronic interface for wireless sensing and data communication. The designed sensors provided a linear and stable performance within the physiologically relevant range of the GI tract (pH: 1-8 and ORP: -500 to +500 mV). Additionally, systematic design optimization of the wireless interface electronics offered an efficient sampling rate of 10 ms for long-running measurements up to 48 h for a complete evaluation of the entire gastrointestinal tract. As a proof-of-concept, the capsule the capsule's performance in detecting inflammation risks was validated by conducting tests on in vitro cell culture conditions, simulating healthy and inflamed gut-like environments. The capsule presented here achieves a new milestone in addressing the emerging need for smart ingestible electronics for better diagnosis and treatment of digestive diseases.
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Affiliation(s)
- Sarath Gopalakrishnan
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
| | - Rithu Thomas
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Sotoudeh Sedaghat
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Akshay Krishnakumar
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
| | - Sadid Khan
- Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Trevor Meyer
- Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Hans Ajieren
- Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Sina Nejati
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Jiangshan Wang
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
- Department of Agricultural and Biological Engineering, West Lafayette, IN, 47907, USA
| | - Mohit S. Verma
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
- Department of Agricultural and Biological Engineering, West Lafayette, IN, 47907, USA
- Weldon School of Biomedical Engineering, West Lafayette, IN, 47907, USA
| | - Pedro Irazoqui
- Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Rahim Rahimi
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
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2
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Heredia-Rivera U, Kasi V, Krishnakumar A, Kadian S, Barui AK, He Z, Wang H, Stanciu L, Rahimi R. Cold Atmospheric Plasma-Assisted Direct Deposition of Polypyrrole-Ag Nanocomposites for Flexible Electronic Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17078-17090. [PMID: 36961226 DOI: 10.1021/acsami.2c20798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Conductive polymers and their composite materials have attracted considerable interest due to their potential applications in sensors, actuators, drug delivery systems, and energy storage devices. Despite their wide range of applications, many challenges remain primarily with respect to the complex synthesis and time-consuming manufacturing steps that are often required in the fabrication process of various devices with conductive polymers. Here, we demonstrate the novel use of cold atmospheric plasma (CAP)-assisted deposition technologies as a solvent-free and scalable approach for in situ polymerization and direct deposition of conductive polypyrrole-silver (PPy-Ag) nanocomposites onto the desired substrates under atmospheric conditions. In this study, a systematic approach with different precursor composition mixtures containing pyrrole as the monomer and AgNO3 as the photoinitiator was investigated to assess the effect of precursor composition on the final chemical, electrical, and mechanical properties of the PPy-Ag nanocomposite thin-film coatings which were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and cyclic bending tests. The characterizations indicated the possibility of fabricating PPy-Ag nanocomposite films with tunable degrees of polymerization and Ag nanoparticle loading by simply varying the percentage of AgNO3 in precursor composition mixtures. Finally, as a proof of concept, the potential use of the PPy-Ag nanocomposite films with different Ag nanoparticle loading percentages was assessed for humidity sensing by measuring their level of change in electrical resistance in the relative humidity range of 12-60%. It is envisioned that the developed CAP-assisted deposition technology can provide a new stepping stone toward scalable additive manufacturing of various functional nanocomposite films for different low-cost and flexible electronic applications.
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Affiliation(s)
- Ulisses Heredia-Rivera
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Venkat Kasi
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Akshay Krishnakumar
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sachin Kadian
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Amit Kumar Barui
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Zihao He
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Haiyan Wang
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Lia Stanciu
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Rahim Rahimi
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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3
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Krishnakumar A, Mishra RK, Kadian S, Zareei A, Rivera UH, Rahimi R. Printed graphene-based electrochemical sensor with integrated paper microfluidics for rapid lidocaine detection in blood. Anal Chim Acta 2022; 1229:340332. [PMID: 36156230 DOI: 10.1016/j.aca.2022.340332] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 08/20/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022]
Abstract
Topical lidocaine patches are commonly used to relieve pain and suffering in various clinical and household settings. Despite its extensive use, excessive skin absorption during numbing or pain reduction procedures can cause systemic toxicity, which can lead to life-threatening conditions. Rapid and reliable monitoring of escalating levels of lidocaine in the blood could help management/prevention of lidocaine overdose and its associated complications. To address this need, here we have developed a disposable point-of-care (POC) diagnostic platform composed of an integrated graphene-based electrochemical sensor with paper-based microfluidics for rapid detection of lidocaine levels in serum and blood samples. The fabrication process takes advantage of advanced, scalable manufacturing techniques, including printing, laser processing, and nondestructive near infrared (NIR) drying. The sensitivity tests of the platform revealed a sensitivity of ∼0.2 μA μM-1 towards lidocaine concentrations in the clinically relevant range (1-100 μM) in both complex matrix fluids of serum and blood with high cross specificity in the presence of the interfering analytes. This proof-of-concept platform could be regarded as the first step toward the development of low-cost and translational POC devices that could help in better pain management and reduce potential side effects or misuse of analgesics.
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Affiliation(s)
- Akshay Krishnakumar
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA; Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
| | - Rupesh Kumar Mishra
- Identify Sensors Biologics, 1203 W. State St., West Lafayette, IN, 47907, USA; School of Material Science and Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Sachin Kadian
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA; School of Material Science and Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Amin Zareei
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA; School of Material Science and Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Ulisses Heredia Rivera
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA; School of Material Science and Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Rahim Rahimi
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA; Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA; School of Material Science and Engineering, Purdue University, West Lafayette, IN, 47907, USA.
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4
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Li L, Liu H, Tang J, Zhang P, Qian Y. Anchoring H-Bond Donating/Accepting Pyrrolic Derivatives on Preorganized Scaffolds: Conformationally Switchable Bipedal/Tripodal and Locked Molecular Cage Ionophores for Potentiometric Sensing of Phosphate and Fluoride. Anal Chem 2022; 94:13762-13769. [PMID: 36165493 DOI: 10.1021/acs.analchem.2c02024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ionophore properties of a myriad of conformationally switchable bipedal/tripodal receptors and locked molecular cages were evaluated here for the first time to fabricate potentiometric sensors for the determination of environmentally important phosphate and fluoride. Owing to the competent ionophore properties such as high binding selectivity and affinity, the developed ion-selective electrodes displayed response preference for phosphate and fluoride with a selectivity pattern that differs distinctly from traditional Hofmeister series. Binding constants of the ionophore-anion complexes are determined to underscore how modifications in the preorganization and H-bond donating/accepting ability of a given series of ionophores can be exploited to improve the performance for potentiometric sensing. While conformationally switchable bipedal/tripodal ionophores prefer tetrahedral oxyanions, locked molecular cages shift their preference to spherical halides gradually. Nernstian potential responses with good reversibility to target anions can be observed when shifting the optimized membrane electrodes in aqueous solutions within the concentration range of 10-6.5-10-2.0 M. Moreover, potentiometric determination of phosphate and fluoride in mineral water, soil, and tap water samples was achieved in a low μM concentration range with high accuracy, confirming their promising utility in real world applications.
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Affiliation(s)
- Long Li
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Haitao Liu
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jing Tang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Peidong Zhang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yi Qian
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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5
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Li L, Liu H, Tang J, Du P, Zhang Y, Qian Y. Embedding of Functionalized Coordination Cages and a Molecular Knot in a Polymeric Membrane for Potentiometric Sensing of Environmentally Important Oxyanions and Halides. ACS Sens 2022; 7:1602-1611. [PMID: 35499166 DOI: 10.1021/acssensors.2c00782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Three kinds of coordination cages and a molecular knot with inductively activated +P-H, N-H, or C-H hydrogen bond donors anchoring in the functionalized cavities were inspected as ionophores to develop polymeric membrane ISEs for potentiometric sensing of environmentally important oxyanions and halides. The proposed ISEs displayed significant preference for perrhenate, phosphate, or chloride with a selectivity pattern distinctively different from the sequence depending on the Gibbs free energy of hydration owing to the high degree of shape, charge, and size selectivity originating from the rigidity and complementarity of the binding cavities. To gain further insight into the response characters of the proposed ISEs, the binding constants of ionophore-anion complexes in the membrane phase were investigated, and the binding affinity, together with the Hofmeister series, correlates well with the determined selectivity pattern of the proposed ISEs. Optimizing the composition of the membrane such as lipophilic additives and plasticizers produced ISEs displaying Nernstian/near-Nernstian potentiometric responses to primary anions with a wide linear range, improved detection limits, good reversibility, and satisfying lifetime. Potentiometric determination of perrhenate, phosphate, and chloride in river water, mineral water, and artificial serum samples was achieved with good recovery and accuracy using the proposed ISEs, demonstrating their potential for real-life applications. These results will shed new light on how novel ionophores could be designed for potentiometric sensing and broaden the scope of host-guest chemistry of coordination cages and molecular knots.
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Affiliation(s)
- Long Li
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Haitao Liu
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Jing Tang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Pengcheng Du
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yihao Zhang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yi Qian
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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6
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Heredia Rivera U, Kadian S, Nejati S, White J, Sedaghat S, Mutlu Z, Rahimi R. Printed Low-Cost PEDOT:PSS/PVA Polymer Composite for Radiation Sterilization Monitoring. ACS Sens 2022; 7:960-971. [PMID: 35333058 DOI: 10.1021/acssensors.1c02105] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
During the γ-radiation sterilization process, the levels of radiation exposure to a medical device must be carefully monitored to achieve the required sterilization without causing deleterious effects on its intended physical and chemical properties. To address this issue, here we have demonstrated the development of an all-printed disposable low-cost sensor that exploits the change in electrical impedance of a semi-interpenetrating polymer network (SIPN) composed of poly(vinyl alcohol) (PVA) and poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) as a functional polymer composite for radiation sterilization monitoring applications. Specifically, the PEDOT:PSS acts as the electrically conductive medium, while the PVA provides the ductility and stability of the printed sensors. During irradiation exposure, chain scission and cross-linking events occur concurrently in the PEDOT:PSS and PVA polymer chains, respectively. The concurrent scissoring of the PEDOT polymer and cross-linking of the PVA polymer network leads to the formation of a stable SIPN with reduced electrical conductivity, which was verified through FTIR, Raman, and TGA analysis. Systematic studies of different ratios of PEDOT:PSS and PVA mixtures were tested to identify the optimal ratio that provided the highest radiation sensitivity and stability performance. The results showed that PEDOT:PSS/PVA composites with 10 wt % PVA produced sensors with relative impedance changes of 30% after 25 kGy and up to 370% after 53 kGy (which are two of the most commonly used radiation exposure levels for sterilization applications). This composition showed high electrical impedance stability with less than ±5% change over 18 days after irradiation exposure. These findings demonstrate the feasibility of utilizing a printing technology for scalable manufacturing of low-cost, flexible radiation sensors for more effective monitoring of radiation sterilization processes.
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Affiliation(s)
- Ulisses Heredia Rivera
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sachin Kadian
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sina Nejati
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Julia White
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Sotoudeh Sedaghat
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Zeynep Mutlu
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Rahim Rahimi
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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7
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Hossain F, Balasuriya N, Hossain MM, Serpe MJ. Orthophosphate Quantification in Water Utilizing an Enzymatic Reaction and a Commercial Glucometer Test Strip. Anal Chem 2022; 94:2056-2062. [DOI: 10.1021/acs.analchem.1c04121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Faisal Hossain
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
- Department of Chemistry, Faculty of Science, University of Chittagong, Chattogram 4331, Bangladesh
| | - Nicholas Balasuriya
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - M. Mosharraf Hossain
- Institute of Forestry and Environmental Sciences, University of Chittagong, Chattogram 4331, Bangladesh
| | - Michael J. Serpe
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Abstract
The continuously rising interest in chemical sensors’ applications in environmental monitoring, for soil analysis in particular, is owed to the sufficient sensitivity and selectivity of these analytical devices, their low costs, their simple measurement setups, and the possibility to perform online and in-field analyses with them. In this review the recent advances in chemical sensors for soil analysis are summarized. The working principles of chemical sensors involved in soil analysis; their benefits and drawbacks; and select applications of both the single selective sensors and multisensor systems for assessments of main plant nutrition components, pollutants, and other important soil parameters (pH, moisture content, salinity, exhaled gases, etc.) of the past two decades with a focus on the last 5 years (from 2017 to 2021) are overviewed.
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9
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Choudhary V, Philip L. Stable paper-based colorimetric sensor for selective detection of phosphate ion in aqueous phase. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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10
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Xu F, Wang P, Bian S, Wei Y, Kong D, Wang H. A Co-Nanoparticles Modified Electrode for On-Site and Rapid Phosphate Detection in Hydroponic Solutions. SENSORS (BASEL, SWITZERLAND) 2021; 21:E299. [PMID: 33466240 PMCID: PMC7794852 DOI: 10.3390/s21010299] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/27/2020] [Accepted: 12/31/2020] [Indexed: 11/16/2022]
Abstract
Conventional strategies for determining phosphate concentration is limited in efficiency due to the cost, time, and labor that is required in laboratory analysis. Therefore, an on-site and rapid detection sensor for phosphate is urgently needed to characterize phosphate variability in a hydroponic system. Cobalt (Co) is a highly sensitive metal that has shown a selectivity towards phosphate to a certain extent. A disposable phosphate sensor based on the screen-printed electrode (SPE) was developed to exploit the advantages of Co-nanoparticles. A support vector machine regression model was established to predict the concentration of phosphate in the hydroponic solutions. The results showed that Co-nanoparticles improve the detection limit of the sensor in the initial state. Meanwhile, the corrosion of Co-nanoparticles leads to a serious time-drift and instability of the electrodes. On the other hand, the coefficient of variation of the disposable phosphate detection chip is 0.4992%, the sensitivity is 33 mV/decade, and the linear range is 10-1-10-4.56 mol/L. The R2 and mean square error of the buffer-free sensor in the hydroponic solution are 0.9792 and 0.4936, respectively. In summary, the SPE modified by the Co-nanoparticles is a promising low-cost sensor for on-site and rapid measurement of the phosphate concentration in hydroponic solutions.
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Affiliation(s)
- Feng Xu
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China; (F.X.); (S.B.); (Y.W.); (H.W.)
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230009, Anhui, China
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA;
| | - Peng Wang
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA;
| | - Shiyuan Bian
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China; (F.X.); (S.B.); (Y.W.); (H.W.)
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230009, Anhui, China
| | - Yuliang Wei
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China; (F.X.); (S.B.); (Y.W.); (H.W.)
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230009, Anhui, China
| | - Deyi Kong
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China; (F.X.); (S.B.); (Y.W.); (H.W.)
| | - Huanqin Wang
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China; (F.X.); (S.B.); (Y.W.); (H.W.)
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11
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Zhu B, Zhao F, Hao P, Yu H, Jiang R, Liu Q, Liu Z. A fast phosphate colorimetric sensor based on MoS 2/UiO-66 (Fe/Zr) nanocomposites as oxidase-/peroxidase-like nanoenzymes. NEW J CHEM 2021. [DOI: 10.1039/d1nj03149j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
According to the excellent peroxidase activity of MoS2/UiO-66(Fe/Zr) as well as specific recognition towards phosphate (Pi), a fast cheap colorimetric sensing platform has been established to determine phosphate.
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Affiliation(s)
- Baocan Zhu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Fengyang Zhao
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Pingping Hao
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Hongguan Yu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Renxia Jiang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Qingyun Liu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Zhenxue Liu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
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12
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Liu X, Yang X, Ma Y, Liu J, Shi D, Niu M, Schipper D. One Nanoscale Zn(II)-Nd(III) Complex With Schiff Base Ligand: NIR Luminescent Sensing of Anions and Nitro Explosives. Front Chem 2020; 8:536907. [PMID: 33195043 PMCID: PMC7591804 DOI: 10.3389/fchem.2020.536907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 08/31/2020] [Indexed: 11/13/2022] Open
Abstract
One Zn-Nd complex [Zn2Nd4L2(OAc)10(OH)2(CH3OH)2] (1) was synthesized from Schiff base ligand bis(3-methoxysalicylidene)ethylene-1,2-phenylenediamine (H2L). 1 shows nanoscale rectangular structure with sizes of about 0.8 × 1.1 × 2.8 nm. 1 exhibits typical near-infrared luminescence of Nd(III) under the excitation of UV-visible light. Further study shows that the complex displays luminescent response behavior to anions and nitro explosives, especially with high sensitivity to H2 PO 2 - and 2,4,6-trinitrophenol.
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Affiliation(s)
- Xia Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Xiaoping Yang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Yanan Ma
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Jieni Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Dongliang Shi
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Mengyu Niu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Desmond Schipper
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX, United States
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13
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Wang J, Li W, Zheng YQ. Colorimetric assay for the sensitive detection of phosphate in water based on metal–organic framework nanospheres possessing catalytic activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj04164e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
For the first time, the inhibition of the catalytic activity of Cu-MOF caused by phosphate was used for phosphate detection.
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Affiliation(s)
- Jiayan Wang
- Chemistry Institute for Synthesis and Green Application, School of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
- School of Medicine
| | - Wenying Li
- Chemistry Institute for Synthesis and Green Application, School of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Yue-Qing Zheng
- Chemistry Institute for Synthesis and Green Application, School of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
| |
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