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Zou J, Liu J, Peng G, Huang H, Wang L, Lu L, Gao Y, Hu D, Chen S. An Electrochemical Sensor Based on a Porous Biochar/Cuprous Oxide (BC/Cu 2O) Composite for the Determination of Hg(II). Molecules 2023; 28:5352. [PMID: 37513225 PMCID: PMC10384289 DOI: 10.3390/molecules28145352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 06/30/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Mercuric ion (Hg2+) in aqueous media is extremely toxic to the environment and organisms. Therefore, the ultra-trace electrochemical determination of Hg2+ in the environment is of critical importance. In this work, a new electrochemical Hg2+ sensing platform based on porous activated carbon (BC/Cu2O) modified with cuprous oxide was developed using a simple impregnation pyrolysis method. Differential pulse anodic stripping voltammetry (DPASV) was used to investigate the sensing capability of the BC/Cu2O electrode towards Hg2+. Due to the excellent conductivity and large specific surface area of BC, and the excellent catalytic activity of Cu2O nanoparticles, the prepared BC/Cu2O electrode exhibited excellent electrochemical activity. The high sensitivity of the proposed system resulted in a low detection limit of 0.3 ng·L-1 and a wide linear response in the ranges from 1.0 ng·L-1 to 1.0 mg·L-1. In addition, this sensor was found to have good accuracy, acceptable precision, and reproducibility. All of these results show that the BC/Cu2O composite is a promising material for Hg2+ electrochemical detection.
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Affiliation(s)
- Jin Zou
- East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jiawei Liu
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Guanwei Peng
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Haiyan Huang
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Linyu Wang
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Limin Lu
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yansha Gao
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Dongnan Hu
- East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China
| | - Shangxing Chen
- East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China
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Kant T, Shrivas K, Ganesan V. Inkjet-printed flexible graphene paper electrode for the electrochemical determination of mercury. RSC Adv 2023; 13:17179-17187. [PMID: 37304784 PMCID: PMC10251220 DOI: 10.1039/d3ra02757k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 05/26/2023] [Indexed: 06/13/2023] Open
Abstract
Here, we report an inkjet-printed graphene paper electrode (IP-GPE) for the electrochemical analysis of mercuric ions (Hg(ii)) in industrial wastewater samples. Graphene (Gr) fabricated on a paper substrate was prepared by a facile solution-phase exfoliation method in which ethyl cellulose (EC) behaves as a stabilizing agent. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were utilized to determine the shape and multiple layers of Gr. The crystalline structure and ordered lattice carbon of Gr were confirmed by X-ray diffraction (XRD) and Raman spectroscopy. The nano-ink of Gr-EC was fabricated on the paper substance via an inkjet printer (HP-1112) and IP-GPE was exploited as a working electrode in linear sweep voltammetry (LSV) and cyclic voltammetry (CV) for the electrochemical detection of Hg(ii). The electrochemical detection is found to be diffusion-controlled illustrated by obtaining a correlation coefficient of 0.95 in CV. The present method exhibits a better linear range of 2-100 μM with a limit of detection (LOD) of 0.862 μM for the determination of Hg(ii). The application of IP-GPE in electrochemical analysis shows a user-friendly, facile, and economical method for the quantitative determination of Hg(ii) in municipal wastewater samples.
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Affiliation(s)
- Tushar Kant
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 C.G. India
| | - Kamlesh Shrivas
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 C.G. India
| | - Vellaichamy Ganesan
- Department of Chemistry, Institute of Science, Banaras Hindu University Varanasi-221005 UP India
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3
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Yang HK, Yu Y, Zhao ZH, Zhang HY, Zhang YM, Chen J, Wang L, He YC. Synthesis, structure, and electrochemical properties of a novel coordination polymer based on a nitrogen-rich ligand. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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4
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Liu K, Pan M, Zhang Z, Hong L, Xie X, Yang J, Wang S, Wang Z, Song Y, Wang S. Electrochemical sensor applying ZrO2/nitrogen-doped three-dimensional porous carbon nanocomposite for efficient detection of ultra-trace Hg2+ ions. Anal Chim Acta 2022; 1231:340392. [DOI: 10.1016/j.aca.2022.340392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/06/2022] [Accepted: 09/11/2022] [Indexed: 11/29/2022]
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Kim C, Park J, Kim W, Lee W, Na S, Park J. Detection of Cd 2+ and Pb 2+ using amyloid oligomer-reduced graphene oxide composite. Bioelectrochemistry 2022; 147:108214. [PMID: 35901626 DOI: 10.1016/j.bioelechem.2022.108214] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 11/02/2022]
Abstract
Heavy metal ions are toxic to humans and can further interact with amyloid in the human body to produce amyloid plaques, which disrupt neurotransmitter function and are linked to Alzheimer's and Parkinson's diseases. In this study, we developed an amyloid oligomer-reduced graphene oxide composite (AOrGOC) electrochemical sensor for effective heavy metal ion detection based on square-wave anodic stripping voltammetry. The reactivity between amyloids and heavy metal ions was studied by analyzing the stripping current for different amyloids (lysozyme, bovine serum albumin, and β-lactoglobulin) and amyloid growth types (monomers, oligomers, and fibrils). Reduced graphene oxide was used to improve the sensitivity of the sensor. The AOrGOC sensor exhibited the detection limits of 86.0 and 9.5 nM for Cd2+ and Pb2+, respectively, and selectively detected Cd2+ and Pb2+ over other heavy metal ions. The AOrGOC sensor also detected Cd2+ and Pb2+ in human plasma, thus exhibiting its potential as a biosensor. This study not only promoted our fundamental understanding of amyloids and the detection of heavy metal ions using amyloids, but also provided valuable insights into amyloid-based electrochemical sensors.
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Affiliation(s)
- Chihyun Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, South Korea
| | - Joohyung Park
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, South Korea
| | - Woochang Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, South Korea
| | - Wonseok Lee
- Department of Electrical Engineering, Korea National University of Transportation, Chungju 27469, South Korea.
| | - Sungsoo Na
- Department of Mechanical Engineering, Korea University, Seoul 02841, South Korea.
| | - Jinsung Park
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, South Korea.
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6
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Ma Y, Li M, Pang K, Zhao M. Dual-Modulated Heterojunctions for Anti-Interference Sensing of Heavy Metals in Seawater. Anal Chem 2022; 94:10183-10191. [PMID: 35776919 DOI: 10.1021/acs.analchem.2c01644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trace analyte detection in a complex environment such as in seawater is usually challenging for classic redox-based electrochemical sensors since the matrix effect of high salinity and various interfering species with similar redox properties can generate false positive/negative signals, thus impacting the sensitivity and specificity of the sensors. In this work, unlike redox-based approaches, we propose a novel sensing mode that relies on dual-modulated interfacial energy barriers of heterojunctions. By constructing the hierarchical structure of Ni/TiO2/porous-reduced graphene oxide/chitosan (CS), we introduce interfacial energy barriers of Schottky junctions into the electrochemical sensors for Cu2+. Most importantly, we found that two factors, light and the electrostatic interactions between the heterojunctions and Cu2+, can be coupled to regulate the height of the interfacial energy barrier and at last exponentially magnify the sensing signals in response to Cu2+. Since the electrostatic interaction is inert to redox, the proposed sensor is robust against most interfering species even in seawater. Illumination further enhances its sensitivity by 6.23 times and endows it a limit of detection of 0.22 nM. Such a dual-modulated sensing mode is also valid in other heterojunctions such as in the p-n junctions of Ni/NiO/MoS2/CS, demonstrating its potential in more universal applications.
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Affiliation(s)
- Ye Ma
- School of Material Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, Shandong 266100, China
| | - Ming Li
- School of Material Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, Shandong 266100, China
| | - Kun Pang
- School of Material Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, Shandong 266100, China
| | - Minggang Zhao
- School of Material Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, Shandong 266100, China
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Mohamad Nor N, Ramli NH, Poobalan H, Qi Tan K, Abdul Razak K. Recent Advancement in Disposable Electrode Modified with Nanomaterials for Electrochemical Heavy Metal Sensors. Crit Rev Anal Chem 2021; 53:253-288. [PMID: 34565248 DOI: 10.1080/10408347.2021.1950521] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Heavy metal pollution has gained global attention due to its high toxicity and non-biodegradability, even at a low level of exposure. Therefore, the development of a disposable electrode that is sensitive, simple, portable, rapid, and cost-effective as the sensor platform in electrochemical heavy metal detection is vital. Disposable electrodes have been modified with nanomaterials so that excellent electrochemical properties can be obtained. This review highlights the recent progress in the development of numerous types of disposable electrodes modified with nanomaterials for electrochemical heavy metal detection. The disposable electrodes made from carbon-based, glass-based, and paper-based electrodes are reviewed. In particular, the analytical performance, fabrication technique, and integration design of disposable electrodes modified with metal (such as gold, tin and bismuth), carbon (such as carbon nanotube and graphene), and metal oxide (such as iron oxide and zinc oxide) nanomaterials are summarized. In addition, the role of the nanomaterials in improving the electrochemical performance of the modified disposable electrodes is discussed. Finally, the current challenges and future prospect of the disposable electrode modified with nanomaterials are summarized.
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Affiliation(s)
- Noorhashimah Mohamad Nor
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
| | - Nurul Hidayah Ramli
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
| | - Hemalatha Poobalan
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
| | - Kai Qi Tan
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
| | - Khairunisak Abdul Razak
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia.,NanoBiotechnology Research & Innovation (NanoBRI), Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia
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Dib M, Moutcine A, Ouchetto H, Chtaini A, Hafid A, Khouili M. New efficient modified carbon paste electrode by Fe2O3@Ni/Al-LDH magnetic nanocomposite for the electrochemical detection of mercury. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Yu F, Luo P, Chen Y, Jiang H, Wang X. The synthesis of novel fluorescent bimetal nanoclusters for aqueous mercury detection based on aggregation-induced quenching. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:2575-2585. [PMID: 34013917 DOI: 10.1039/d1ay00342a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this research, new bimetal nanoclusters (DAMP-AuAg BNCs) with 4,6-diamino-2-mercaptopyrimidine (DAMP) as a reducing agent and stabilizer ligand were exploited. The nanoclusters displayed excellent fluorescent properties, very small size, good stability, and water solubility. It was found that the as-prepared DAMP-AuAg BNCs exhibited strong fluorescent emission at 640 nm under an excitation wavelength of 473 nm with a large Stokes shift of 167 nm, and the red fluorescence could be readily quenched with aqueous Hg2+. The DAMP-AuAg BNCs showed good specificity and sensitivity toward Hg2+ in aqueous solution, and the fluorescence analysis of Hg2+ showed a wide linear range from 0.85 μM to 246 μM and a detection limit of 20 nM. It is demonstrated that strong Hg2+-Au+ interactions led to the aggregation of nanoclusters, which caused the quenching of the fluorescence, and the affinity of Hg2+ for nitrogen should also be considered. Due to the relevant good performance of DAMP-AuAg BNCs, they were applied to the fluorescence analysis of Hg2+ in real water samples and were found to be a potential fluorescent sensor for aqueous mercury ions.
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Affiliation(s)
- Fangfang Yu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.
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10
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Ding Y, Zhao M, Yu J, Zhang X, Li Z, Li H. Using the interfacial barrier effects of p-n junction on electrochemistry for detection of phosphate. Analyst 2020; 145:3217-3221. [PMID: 32211694 DOI: 10.1039/c9an02579k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel type of electrochemical sensor for detection of phosphate in water environment was developed by combining the interfacial barrier of p-n junction with the adsorption of phosphate. The electrochemical response was produced by the induced change of the barrier height, which was only caused by the specific adsorption of phosphate. Two linear concentration ranges (0-0.045 mg L-1 and 0.045-0.090 mg L-1) with two sensitivities (4.98 μA (μg L-1)-1 and 1.28 μA (μg L-1)-1) were found. The good performance made the sensor meet the requirements of the World Health Organization for drinking water (1 mg L-1 of phosphate). It is an approach to develop electrochemical sensors by employing the interfacial barrier effects on electrochemistry.
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Affiliation(s)
- Yu Ding
- Department of Materials Science and Engineering, Ocean University of China, 266100 Qingdao, PR China.
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Design of high-performance electrochemistry sensors: Elucidation of detection mechanism by DFT studies. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.113905] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Highly efficient SnS-decorated Bi2O3 nanosheets for simultaneous electrochemical detection and removal of Cd(II) and Pb(II). J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113744] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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YANG H, HUANG Y, ZHAO Y, FAN A. Sensitive Chemiluminescent Sensing Method for Mercury(II) Ions Based on Monolayer Molybdenum Disulfide. ANAL SCI 2019; 35:551-556. [DOI: 10.2116/analsci.18p502] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Hongli YANG
- School of Pharmaceutical Science and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University
| | - Yongxin HUANG
- School of Pharmaceutical Science and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University
| | - Yanjun ZHAO
- School of Pharmaceutical Science and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University
| | - Aiping FAN
- School of Pharmaceutical Science and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University
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Venkateswarlu S, Govindaraju S, Sangubotla R, Kim J, Lee MH, Yun K. Biosynthesized Highly Stable Au/C Nanodots: Ideal Probes for the Selective and Sensitive Detection of Hg 2+ Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E245. [PMID: 30759765 PMCID: PMC6409943 DOI: 10.3390/nano9020245] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/03/2019] [Accepted: 02/07/2019] [Indexed: 01/14/2023]
Abstract
The enormous ongoing industrial development has caused serious water pollution which has become a major crisis, particularly in developing countries. Among the various water pollutants, non-biodegradable heavy metal ions are the most prevalent. Thus, trace-level detection of these metal ions using a simple technique is essential. To address this issue, we have developed a fluorescent probe of Au/C nanodots (GCNDs-gold carbon nanodots) using an eco-friendly method based on an extract from waste onion leaves (Allium cepa-red onions). The leaves are rich in many flavonoids, playing a vital role in the formation of GCNDs. Transmission electron microscopy (TEM) and Scanning transmission electron microscopy-Energy-dispersive X-ray spectroscopy (STEM-EDS) elemental mapping clearly indicated that the newly synthesized materials are approximately 2 nm in size. The resulting GCNDs exhibited a strong orange fluorescence with excitation at 380 nm and emission at 610 nm. The GCNDs were applied as a fluorescent probe for the detection of Hg2+ ions. They can detect ultra-trace concentrations of Hg2+ with a detection limit of 1.3 nM. The X-ray photoelectron spectroscopy results facilitated the identification of a clear detection mechanism. We also used the new probe on a real river water sample. The newly developed sensor is highly stable with a strong fluorescent property and can be used for various applications such as in catalysis and biomedicine.
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Affiliation(s)
- Sada Venkateswarlu
- Department of Nanochemistry, Gachon University, Gyeonggi-do 13120, Korea.
| | - Saravanan Govindaraju
- Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Korea.
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea.
| | - Roopkumar Sangubotla
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam Daero, Seongnam-Si, Gyeonggi-do 13120, Korea.
| | - Jongsung Kim
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam Daero, Seongnam-Si, Gyeonggi-do 13120, Korea.
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea.
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Korea.
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