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Szymczyk A, Popiołek M, Baran D, Olszewski M, Ziółkowski R, Malinowska E. Aptamer and Electrochemical Aptasensor towards Selenate Ions (SeO 42-). Int J Mol Sci 2024; 25:6660. [PMID: 38928366 PMCID: PMC11203472 DOI: 10.3390/ijms25126660] [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: 05/25/2024] [Revised: 06/13/2024] [Accepted: 06/16/2024] [Indexed: 06/28/2024] Open
Abstract
Selenium is an essential inorganic compound in human and animal nutrition, involved in the proper functioning of the body. As a micronutrient, it actively contributes to the regulation of various metabolic activities, i.e., thyroid hormone, and protection against oxidative stress. However, Se exhibits a narrow concentration window between having a positive effect and exerting a toxic effect. In higher doses, it negatively affects living organisms and causes DNA damage through the formation of free radicals. Increased reactivity of Se anions can also disrupt the integrity and function of DNA-repairing proteins. As the permissible concentration of Se in drinking water is 10 µg/L, it is vital to develop sensitive and robust methods of Se detection in aqueous samples. In this study, for the first time, we proposed a selective aptamer for selenate ion detection, chosen following the SELEX process, and its application in the construction of an electrochemical aptasensor towards SeO42- ions. Measurement conditions such as the used redox marker and pH value of the measurement solution were chosen. The proposed aptasensor is characterized by good selectivity and an LOD of 1 nM. Conditions for biosensor regeneration and storage were also investigated in this research.
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Affiliation(s)
- Anna Szymczyk
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664 Warsaw, Poland; (A.S.); (M.P.); (D.B.); (E.M.)
- Doctoral School, Warsaw University of Technology, Plac Politechniki 1, 00-661 Warsaw, Poland
| | - Martyna Popiołek
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664 Warsaw, Poland; (A.S.); (M.P.); (D.B.); (E.M.)
| | - Dominika Baran
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664 Warsaw, Poland; (A.S.); (M.P.); (D.B.); (E.M.)
| | - Marcin Olszewski
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa 75, 00-664 Warsaw, Poland;
| | - Robert Ziółkowski
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664 Warsaw, Poland; (A.S.); (M.P.); (D.B.); (E.M.)
| | - Elżbieta Malinowska
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Stanisława Noakowskiego 3, 00-664 Warsaw, Poland; (A.S.); (M.P.); (D.B.); (E.M.)
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
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Zhou J, Hu C, Li S, Zhang C, Liu Y, Chen Z, Li S, Chen H, Deng Y. An electrochemical aptasensor based on silver-thiolated graphene for highly sensitive detection of Pb 2. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2905-2912. [PMID: 38660709 DOI: 10.1039/d4ay00322e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
The presence of lead ions (Pb2+) in the environment not only leads to environmental contamination but also poses a significant risk to public health through their migration into food and drinking water. Therefore, the development of rapid and effective techniques for detection of trace amounts of Pb2+ is crucial for safeguarding both the environment and biosafety. In this study, an aptamer-based electrochemical sensor was developed for specific detection of Pb2+ by modifying a polylysine (PLL) coated silver-thiolated graphene (Ag-SH-G) nanocomposite (PLL/Ag-SH-G) on the surface of a glassy carbon electrode, which was further modified with gold nanoparticles (AuNPs) for attachment of aptamers (Apt) that specifically recognized Pb2+. The Ag-SH-G particles were synthesized using a one-step in situ method, resulting in significantly enhanced electrochemical properties upon incorporating Ag nanoparticles into the PLL/Ag-SH-G composite. Coating of the covalently or no-covalently bonded Ag-SH-G particles with PLL provides an excellent supporting matrix, facilitating the assembly of AuNPs and a thiol-modified aptamer for Pb2+. Under optimized conditions, Apt/AuNPs/PLL/Ag-SH-G/GCE exhibited excellent sensing performance for Pb2+ with a wide linear response range (10-1000 nM), a low detection limit (0.047 nM) and extraordinary selectivity. The sensor was employed and satisfactory results were obtained in river water, soil and vegetable samples for the detection of Pb2+.
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Affiliation(s)
- Jie Zhou
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
- Institute for Future Sciences, University of South China, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Changchun Hu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Shuo Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Chuanxiang Zhang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
- College of Packing and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Yuan Liu
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
- Institute for Future Sciences, University of South China, Changsha, Hunan 410000, China
| | - Zhu Chen
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
- Institute for Future Sciences, University of South China, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Song Li
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
- Institute for Future Sciences, University of South China, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
- National Health Commission Key Laboratory of Birth Defect Research and Prevention, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan 410008, China
| | - Hui Chen
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
- Institute for Future Sciences, University of South China, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Yan Deng
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
- Institute for Future Sciences, University of South China, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, Hunan 412007, China
- National Health Commission Key Laboratory of Birth Defect Research and Prevention, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan 410008, China
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3
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Han M, Xie Y, Wang R, Li Y, Bian C, Xia S. 4-Mercaptopyridine-Modified Sensor for the Sensitive Electrochemical Detection of Mercury Ions. MICROMACHINES 2023; 14:739. [PMID: 37420972 DOI: 10.3390/mi14040739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/16/2023] [Accepted: 03/25/2023] [Indexed: 07/09/2023]
Abstract
As a highly toxic heavy metal ion, mercury ion (Hg2+) pollution has caused serious harm to the environment and human health. In this paper, 4-mercaptopyridine (4-MPY) was selected as the sensing material and decorated on the surface of a gold electrode. Trace Hg2+ could be detected by both differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) methods. The proposed sensor displayed a wide detection range from 0.01 μg/L to 500 μg/L with a low limit of detection (LOD) of 0.002 μg/L by EIS measurements. Combined with molecular simulations and electrochemical analyses, the chelating mechanism between Hg2+ and 4-MPY was explored. Through the analysis of binding energy (BE) values and stability constants, 4-MPY showed an excellent selectivity for Hg2+. In the presence of Hg2+, the coordination of Hg2+ with the pyridine nitrogen of 4-MPY was generated at the sensing region, which caused a change in the electrochemical activity of the electrode surface. Due to the strong specific binding capability, the proposed sensor featured excellent selectivity and an anti-interference capability. Furthermore, the practicality of the sensor for Hg2+ detection was validated with the samples of tap water and pond water, which demonstrated its potential application for on-site environmental detection.
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Affiliation(s)
- Mingjie Han
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Yong Xie
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Ri Wang
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Yang Li
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
| | - Chao Bian
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
| | - Shanhong Xia
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
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Calvillo Solís JJ, Galicia García M, González Bravo FJ, Ortiz‐Ledón CA. Electrografting a
p
‐Propylaniline/L–Cys Nanofilm onto a Glassy Carbon Electrode Resulting in Enhanced Electrosensing of Cd(II), Pb(II) and Hg(II). ChemistrySelect 2022. [DOI: 10.1002/slct.202203592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Jonathan J. Calvillo Solís
- Department of Chemistry-Biological Sciences Universidad Autónoma de Ciudad Juárez 32300 Ciudad Juárez Chihuahua México
| | - Mónica Galicia García
- Department of Chemistry-Biological Sciences Universidad Autónoma de Ciudad Juárez 32300 Ciudad Juárez Chihuahua México
| | - Felipe J. González Bravo
- Department of Chemistry Centro de Investigación y de Estudios Avanzados del IPN 07360 México City México
| | - César A. Ortiz‐Ledón
- Department of Chemistry University of Wisconsin-Madison Madison Wisconsin 53706 United States
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Yang L, Zhang Z, Zhang R, Du H, Zhou T, Wang X, Wang F. A “ turn on” fluorescent sensor for Hg2+ detection based on rolling circle amplification with DNA origami-assisted signal amplification strategy. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Zhang W, Zhang P, Liang Y, Cheng W, Li L, Wang H, Yu Z, Liu Y, Zhang X. Rapid electrochemical quantification of trace Hg 2+ using a hairpin DNA probe and quantum dot modified screen-printed gold electrodes. RSC Adv 2022; 12:13448-13455. [PMID: 35527727 PMCID: PMC9067431 DOI: 10.1039/d2ra01817a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 04/18/2022] [Indexed: 11/21/2022] Open
Abstract
Rapid, simple, sensitive and specific approaches for mercury(ii) (Hg2+) detection are essential for toxicology assessment, environmental protection, food analysis and human health. In this study, a ratiometric hairpin DNA probe based electrochemical biosensor, which relies on hairpin DNA probes conjugated with water-soluble and carboxyl functionalized quaternary Zn–Ag–In–S quantum dot (QD) on screen-printed gold electrodes (SPGE), referred to as the HP-QDs-SPGE electrochemical biosensor in this study, was developed for Hg2+ detection. Based on the “turn-off” reaction of a hairpin DNA probe binding with a mismatched target and Hg2+ through the formation of T–Hg2+–T coordination, the HP-QDs-SPGE electrochemical biosensor can rapidly quantify trace Hg2+ with high ultrasensitivity, specificity, repeatability and reproducibility. The conformational change of the hairpin DNA probe caused a significant decrease in electrochemical intensity, which could be used for the quantification of Hg2+. The linear dynamic range and high sensitivity of the HP-QDs-SPGE electrochemical biosensor for the detection of Hg2+ was studied in vitro, with a broad linear dynamic range of 10 pM to 1 μM and detection limits of 0.11 pM. In particular, this HP-QDs-SPGE electrochemical biosensor showed excellent selectivity toward Hg2+ ions in the presence of other metal ions. More importantly, this biosensor has been successfully used to detect Hg2+ in deionized water, tap water, groundwater and urine samples with good recovery rate and small relative standard deviations. In summary, the developed HP-QDs-SPGE electrochemical biosensor exhibited promising potential for further applications in on-site analysis. A ratiometric hairpin DNA probe based electrochemical biosensor, which relies on hairpin DNA probes conjugated with water-soluble and carboxyl functionalized quantum dot on screen-printed gold electrodes, was developed for Hg2+ detection.![]()
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Affiliation(s)
- Wancun Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou Key Laboratory of Precise Diagnosis and Treatment of Children's Malignant Tumors, Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018 China +86-373-63866536 +86-373-63866536
| | - Pin Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou Key Laboratory of Precise Diagnosis and Treatment of Children's Malignant Tumors, Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018 China +86-373-63866536 +86-373-63866536
| | - Ying Liang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou Key Laboratory of Precise Diagnosis and Treatment of Children's Malignant Tumors, Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018 China +86-373-63866536 +86-373-63866536
| | - Weyland Cheng
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou Key Laboratory of Precise Diagnosis and Treatment of Children's Malignant Tumors, Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018 China +86-373-63866536 +86-373-63866536
| | - Lifeng Li
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou Key Laboratory of Precise Diagnosis and Treatment of Children's Malignant Tumors, Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018 China +86-373-63866536 +86-373-63866536
| | - Huanmin Wang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou Key Laboratory of Precise Diagnosis and Treatment of Children's Malignant Tumors, Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018 China +86-373-63866536 +86-373-63866536
| | - Zhidan Yu
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Zhengzhou Key Laboratory of Precise Diagnosis and Treatment of Children's Malignant Tumors, Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018 China +86-373-63866536 +86-373-63866536
| | - Yan Liu
- Department of Medicine, The First Affiliated Hospital of Zhengzhou University Zhengzhou China
| | - Xianwei Zhang
- Department of Medicine, The First Affiliated Hospital of Zhengzhou University Zhengzhou China
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Rabchinskii MK, Sysoev VV, Ryzhkov SA, Eliseyev IA, Stolyarova DY, Antonov GA, Struchkov NS, Brzhezinskaya M, Kirilenko DA, Pavlov SI, Palenov ME, Mishin MV, Kvashenkina OE, Gabdullin PG, Varezhnikov AS, Solomatin MA, Brunkov PN. A Blueprint for the Synthesis and Characterization of Thiolated Graphene. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 12:45. [PMID: 35009995 PMCID: PMC8746421 DOI: 10.3390/nano12010045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/14/2021] [Accepted: 12/22/2021] [Indexed: 06/12/2023]
Abstract
Graphene derivatization to either engineer its physical and chemical properties or overcome the problem of the facile synthesis of nanographenes is a subject of significant attention in the nanomaterials research community. In this paper, we propose a facile and scalable method for the synthesis of thiolated graphene via a two-step liquid-phase treatment of graphene oxide (GO). Employing the core-level methods, the introduction of up to 5.1 at.% of thiols is indicated with the simultaneous rise of the C/O ratio to 16.8. The crumpling of the graphene layer upon thiolation without its perforation is pointed out by microscopic and Raman studies. The conductance of thiolated graphene is revealed to be driven by the Mott hopping mechanism with the sheet resistance values of 2.15 kΩ/sq and dependable on the environment. The preliminary results on the chemiresistive effect of these films upon exposure to ethanol vapors in the mix with dry and humid air are shown. Finally, the work function value and valence band structure of thiolated graphene are analyzed. Taken together, the developed method and findings of the morphology and physics of the thiolated graphene guide the further application of this derivative in energy storage, sensing devices, and smart materials.
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Affiliation(s)
- Maxim K. Rabchinskii
- Ioffe Institute, Politekhnicheskaya St. 26, 194021 Saint Petersburg, Russia; (S.A.R.); (I.A.E.); (G.A.A.); (D.A.K.); (S.I.P.); (P.N.B.)
| | - Victor V. Sysoev
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., 410054 Saratov, Russia; (V.V.S.); (A.S.V.); (M.A.S.)
| | - Sergei A. Ryzhkov
- Ioffe Institute, Politekhnicheskaya St. 26, 194021 Saint Petersburg, Russia; (S.A.R.); (I.A.E.); (G.A.A.); (D.A.K.); (S.I.P.); (P.N.B.)
| | - Ilya A. Eliseyev
- Ioffe Institute, Politekhnicheskaya St. 26, 194021 Saint Petersburg, Russia; (S.A.R.); (I.A.E.); (G.A.A.); (D.A.K.); (S.I.P.); (P.N.B.)
| | - Dina Yu. Stolyarova
- National Research Centre “Kurchatov Institute”, Akademika Kurchatova pl. 1, 123182 Moscow, Russia;
| | - Grigorii A. Antonov
- Ioffe Institute, Politekhnicheskaya St. 26, 194021 Saint Petersburg, Russia; (S.A.R.); (I.A.E.); (G.A.A.); (D.A.K.); (S.I.P.); (P.N.B.)
| | - Nikolai S. Struchkov
- Center for Probe Microscopy and Nanotechnology, National Research University of Electronic Technology, Bld. 1, Shokin Square, 124498 Moscow, Russia;
| | - Maria Brzhezinskaya
- Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany;
| | - Demid A. Kirilenko
- Ioffe Institute, Politekhnicheskaya St. 26, 194021 Saint Petersburg, Russia; (S.A.R.); (I.A.E.); (G.A.A.); (D.A.K.); (S.I.P.); (P.N.B.)
| | - Sergei I. Pavlov
- Ioffe Institute, Politekhnicheskaya St. 26, 194021 Saint Petersburg, Russia; (S.A.R.); (I.A.E.); (G.A.A.); (D.A.K.); (S.I.P.); (P.N.B.)
| | - Mihail E. Palenov
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University (SPbPU), Polytechnicheskaya 29, 195251 Saint Petersburg, Russia; (M.E.P.); (M.V.M.); (O.E.K.); (P.G.G.)
| | - Maxim V. Mishin
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University (SPbPU), Polytechnicheskaya 29, 195251 Saint Petersburg, Russia; (M.E.P.); (M.V.M.); (O.E.K.); (P.G.G.)
| | - Olga E. Kvashenkina
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University (SPbPU), Polytechnicheskaya 29, 195251 Saint Petersburg, Russia; (M.E.P.); (M.V.M.); (O.E.K.); (P.G.G.)
| | - Pavel G. Gabdullin
- Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University (SPbPU), Polytechnicheskaya 29, 195251 Saint Petersburg, Russia; (M.E.P.); (M.V.M.); (O.E.K.); (P.G.G.)
| | - Alexey S. Varezhnikov
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., 410054 Saratov, Russia; (V.V.S.); (A.S.V.); (M.A.S.)
| | - Maksim A. Solomatin
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., 410054 Saratov, Russia; (V.V.S.); (A.S.V.); (M.A.S.)
| | - Pavel N. Brunkov
- Ioffe Institute, Politekhnicheskaya St. 26, 194021 Saint Petersburg, Russia; (S.A.R.); (I.A.E.); (G.A.A.); (D.A.K.); (S.I.P.); (P.N.B.)
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Pang X, Bai H, Zhao H, Liu Y, Qin F, Han X, Fan W, Shi W. Biothiol-Functionalized Cuprous Oxide Sensor for Dual-Mode Sensitive Hg 2+ Detection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46980-46989. [PMID: 34581178 DOI: 10.1021/acsami.1c10260] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hg2+ ions are one of the highly poisonous heavy metal ions in the environment, so it is urgent to develop rapid and sensitive detection platforms for detecting Hg2+ ions. In this work, a novel electrochemical and photoelectrochemical dual-mode sensor (l-Cys-Cu2O) was successfully fabricated, and the sensor exhibits a satisfactory detection limit (0.2 and 0.01 nM) for the detection of Hg2+, which is far below the dangerous limit of the U.S. Environmental Protection Agency. The linear ranges of dual-mode Hg2+ detections were 0.33-3.3 and 0.17-1.33 μM, respectively. Moreover, the sensor shows desirable stability, selectivity, and reproducibility for detecting Hg2+ ions. For river water samples, the recoveries of 96.6-101.4% (electrochemical data) and 93.0-105.6% (photoelectrochemical data) were obtained, indicating that the sensor could be successfully applied in the determination of Hg2+ ions in environmental water. Therefore, the designed sensor has a potential in the trace-level detection of Hg2+ ions.
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Affiliation(s)
- Xuliang Pang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Hongye Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Huaiquan Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Youchao Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Feiyang Qin
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Xiao Han
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Weiqiang Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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Mahmoudian MR, Basirun WJ, Woi PM, Alias Y. Synthesis of polyaniline microtubes/Pt reduced N-graphene oxide in the presence of L-glutamine for the detection of Hg2+. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01487-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Fu CC, Hsieh CT, Juang RS, Gu S, Ashraf Gandomi Y, Kelly RE, Kihm KD. Electrochemical sensing of mercury ions in electrolyte solutions by nitrogen-doped graphene quantum dot electrodes at ultralow concentrations. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112593] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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