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Hazarika R, Deffo G, Wamba HN, Hussain N, Kalita S, Basumatary M, Njanja E, Dasgupta S, Puzari P. Sensitive determination of 4,6-dinitro- o-cresol based on a glassy carbon electrode modified with Zr-UiO-66 metal-organic framework entrapped FMWCNTs. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 16:62-73. [PMID: 38058286 DOI: 10.1039/d3ay01723k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
A DNOC electrochemical sensor has been developed by using a composite of Zr-UiO-66 and FMWCNTs on a glassy carbon electrode (GCE) and using the differential pulse voltammetry technique. The synthesized materials were physico-chemically characterized by BET, PXRD, FTIR, TGA, EDX, and FESEM. Cyclic voltammetry showed that DNOC has three oxidation peaks at 0.03 V (RSD: 0.23%), 0.42 V (RSD: 0.21%), and 1.32 V (RSD: 0.32%) and three reduction peaks at - 0.20 V (RSD: 0.15%), - 0.82 V (RSD: 0.26%), and - 1.14 V (RSD: 0.19%) which follow a diffusion-controlled mechanism. Different parameters were optimized using differential pulse voltammetry and good linear ranges were found for the simultaneous detection of the three reduction peaks. For a specific concentration range of 0.1-50 μM, a limit of detection of 0.119 μM based on 3Sb/m was obtained. The interfering effects of five non-phenolic pesticides and five heavy metals were evaluated to highlight the selectivity of the developed sensor. It is the first report of an electrochemical DNOC sensor in which all three oxidation peaks are prominently visible. Ethion and chloropyriphos were found to inhibit the redox process of DNOC on the developed sensor platform Zr-UiO-66/FMWCNT/GCE. The sensor was successfully applied to DNOC determination in spiked potato samples and the results showed a standard deviation of less than 3%. The proposed method is expected to provide a novel platform for the quantitative determination of DNOC pesticides in vegetables.
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Affiliation(s)
- Ranjit Hazarika
- Department of Chemical Sciences, Tezpur University, Tezpur, Assam 784028, India.
| | - Gullit Deffo
- Department of Chemical Sciences, Tezpur University, Tezpur, Assam 784028, India.
- Electrochemistry and Chemistry of Materials, Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | | | - Nayab Hussain
- Department of Chemical Sciences, Tezpur University, Tezpur, Assam 784028, India.
| | - Shyamali Kalita
- Department of Chemical Sciences, Tezpur University, Tezpur, Assam 784028, India.
| | - Mwina Basumatary
- Department of Chemical Sciences, Tezpur University, Tezpur, Assam 784028, India.
| | - Evangéline Njanja
- Electrochemistry and Chemistry of Materials, Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Soumen Dasgupta
- CSIR-Indian Institute of Petroleum, Dehradun, 248005, Uttarakhand, India
| | - Panchanan Puzari
- Department of Chemical Sciences, Tezpur University, Tezpur, Assam 784028, India.
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2
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Yang X, Lei L, Song D, Sun Y, Yang M, Sang Z, Zhou J, Huang H, Li Y. An efficient differential sensing strategy for phenolic pollutants based on the nanozyme with polyphenol oxidase activity. LUMINESCENCE 2022; 37:1414-1426. [PMID: 35723898 DOI: 10.1002/bio.4313] [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] [Received: 03/23/2022] [Revised: 06/09/2022] [Accepted: 06/16/2022] [Indexed: 11/10/2022]
Abstract
To realize the efficient differential sensing of phenolic pollutants in sewage, a novel sensing strategy was successfully developed based on one nanozyme (GMP-Cu) with polyphenol oxidase activity. Phenolic pollutants can be oxidized by GMP-Cu, and the oxidation products reacts subsequently with 4-aminoantipyrine to produce a quinone-imine compound. The absorption spectra of final quinone-imine products resulted from different phenolic pollutants showed obvious differences, which were due to the interaction difference between GMP-Cu and phenolic pollutants, as well as the different molecular structures of the quinone-imine products from different phenolic pollutants. Based on the difference of absorption spectra, a novel differential sensing strategy was developed. The genetic algorithm was used to select the characteristic wavelengths at different enzymatic reaction times, HCA and PLS-DA algorithms were utilized for the discriminant sensing of seven representative phenolic pollutants, including hydroquinone, resorcinol, catechol, resorcinol, phenol, p-chlorophenol, and 2,4-dichlorophenol. Scientific wavelength selection algorithm and recognition algorithm resulted in the successful identification of phenolic pollutants in sewage with a discriminant accuracy of 100%, and differentiation of the phenolic pollutants regardless of their concentration. These results indicate that sensing strategy can be used as an effective tool for the efficient identification and differentiation of phenolic pollutants in sewage.
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Affiliation(s)
- Xiaoyu Yang
- College of Food Science and Engineering, Jilin University, Changchun, P. R. China
| | - Lulu Lei
- College of Food Science and Engineering, Jilin University, Changchun, P. R. China
| | - Donghui Song
- College of Food Science and Engineering, Jilin University, Changchun, P. R. China
| | - Yue Sun
- Key Lab of Groundwater Resources and Environment of Ministry of Education, Key Lab of Water Resources and Aquatic Environment of Jilin Province, College of New Energy and Environment, Jilin University, Changchun, P. R. China
| | - Meng Yang
- College of Food Science and Engineering, Jilin University, Changchun, P. R. China
| | - Zhen Sang
- College of Food Science and Engineering, Jilin University, Changchun, P. R. China
| | - Jianan Zhou
- College of Food Science and Engineering, Jilin University, Changchun, P. R. China
| | - Hui Huang
- College of Food Science and Engineering, Jilin University, Changchun, P. R. China
| | - Yongxin Li
- Key Lab of Groundwater Resources and Environment of Ministry of Education, Key Lab of Water Resources and Aquatic Environment of Jilin Province, College of New Energy and Environment, Jilin University, Changchun, P. R. China
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Ngassa GBP, Fafard J, Tonle IK. Kaolinite‐based Hybrid Material from Interlayer Grafting of 1‐(2‐hydroxyethyl)piperazine and Application to the Sensitive Voltammetric Detection of Lead. ELECTROANAL 2022. [DOI: 10.1002/elan.202100205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Guy B. Piegang Ngassa
- Department of Chemistry Faculty of Science University of Douala, P.O. Box 24 157 Douala Cameroon
- Laboratory of Analytical Chemistry Faculty of Science University of Yaoundé 1, P.O. Box 812 Yaoundé Cameroon
- Department of Chemistry and Center for Catalysis Research and Innovation University of Ottawa 10 Marie Curie K1 N6 N5 Ottawa Ontario Canada
| | - Jonathan Fafard
- Department of Chemistry and Center for Catalysis Research and Innovation University of Ottawa 10 Marie Curie K1 N6 N5 Ottawa Ontario Canada
| | - Ignas K. Tonle
- Electrochemistry and Chemistry of Materials Department of Chemistry Faculty of Science University of Dschang PO Box 67 Dschang Cameroon
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4
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Deffo G, Temgoua RCT, Tajeu KY, Njanja E, Doungmo G, Tonle IK, Ngameni E. Signal amplification by electropolymerization of alizarin red S for improved diuron detection at organosmectite modified glassy carbon electrode. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gullit Deffo
- Faculty of Science, Department of Chemistry, Electrochemistry and Chemistry of Materials University of Dschang Dschang Cameroon
| | - Ranil Clément Tonleu Temgoua
- Faculty of Science, Department of Chemistry, Electrochemistry and Chemistry of Materials University of Dschang Dschang Cameroon
- CNRS, CEISAM UMR 6230 Université de Nantes Nantes France
| | - Kevin Yemele Tajeu
- Faculty of Science, Department of Chemistry, Electrochemistry and Chemistry of Materials University of Dschang Dschang Cameroon
| | - Evangéline Njanja
- Faculty of Science, Department of Chemistry, Electrochemistry and Chemistry of Materials University of Dschang Dschang Cameroon
| | - Giscard Doungmo
- Institute of Inorganic Chemistry Christian‐Albrechts‐Universität zu Kiel Kiel Germany
| | - Ignas Kenfack Tonle
- Faculty of Science, Department of Chemistry, Electrochemistry and Chemistry of Materials University of Dschang Dschang Cameroon
| | - Emmanuel Ngameni
- Faculty of Science, Department of Chemistry, Laboratory of Analytical Chemistry University of Yaoundé 1 Yaoundé Cameroon
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Karbelkar A, Reynolds EE, Ahlmark R, Furst AL. A Microbial Electrochemical Technology to Detect and Degrade Organophosphate Pesticides. ACS CENTRAL SCIENCE 2021; 7:1718-1727. [PMID: 34729415 PMCID: PMC8554842 DOI: 10.1021/acscentsci.1c00931] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Organophosphate (OP) pesticides cause hundreds of illnesses and deaths annually. Unfortunately, exposures are often detected by monitoring degradation products in blood and urine, with few effective methods for detection and remediation at the point of dispersal. We have developed an innovative strategy to remediate these compounds: an engineered microbial technology for the targeted detection and destruction of OP pesticides. This system is based upon microbial electrochemistry using two engineered strains. The strains are combined such that the first microbe (E. coli) degrades the pesticide, while the second (S. oneidensis) generates current in response to the degradation product without requiring external electrochemical stimulus or labels. This cellular technology is unique in that the E. coli serves only as an inert scaffold for enzymes to degrade OPs, circumventing a fundamental requirement of coculture design: maintaining the viability of two microbial strains simultaneously. With this platform, we can detect OP degradation products at submicromolar levels, outperforming reported colorimetric and fluorescence sensors. Importantly, this approach affords a modular, adaptable strategy that can be expanded to additional environmental contaminants.
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Affiliation(s)
- Amruta
A. Karbelkar
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Erin E. Reynolds
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Rachel Ahlmark
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Ariel L. Furst
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
- Center
for Environmental Health Sciences, Massachusetts
Institute of Technology, Cambridge, Massachusetts 02139, United States
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6
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Dongmo LM, Guenang LS, Jiokeng SLZ, Kamdem AT, Doungmo G, Victor BC, Jović M, Lesch A, Tonlé IK, Girault H. A new sensor based on an amino-montmorillonite-modified inkjet-printed graphene electrode for the voltammetric determination of gentisic acid. Mikrochim Acta 2021; 188:36. [PMID: 33420843 DOI: 10.1007/s00604-020-04651-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/17/2020] [Indexed: 11/24/2022]
Abstract
An amperometric sensor based on an inkjet-printed graphene electrode (IPGE) modified with amine-functionalized montmorillonite (Mt-NH2) for the electroanalysis and quantification of gentisic acid (GA) has been developed. The organoclay used as IPGE modifier was prepared and characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy, CHN elemental analysis, and thermogravimetry. The electrochemical features of the Mt-NH2/IPGE sensor were investigated by cyclic voltammetry and electrochemical impedance spectroscopy. The sensor exhibited charge selectivity ability which was exploited for the electrochemical oxidation of GA. The GA amperometric response was high in acidic medium (Brinton-Robinson buffer, pH 2) due to favorable interactions between the protonated amine groups and the negatively charged GA. Kinetic studies were also performed by cyclic voltammetry, and the obtained electron transfer rate constant of 11.3 s-1 indicated a fast direct electron transfer rate of GA to the electrode. An approach using differential pulse voltammetry was then developed for the determination of GA (at + 0.233 V vs. a pseudo Ag/Ag+ reference electrode), and under optimized conditions, the sensor showed high sensitivity, a wide working linear range from 1 to 21 μM (R2 = 0.999), and a low detection limit of 0.33 μM (0.051 ± 0.01 mg L-1). The proposed sensor was applied to quantify GA in a commercial red wine sample. The simple and rapid method developed using a cheap clay material could be employed for the determination of various phenolic acids.
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Affiliation(s)
- Liliane M Dongmo
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
| | - Léopoldine S Guenang
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
- Department of chemistry, Inorganic Chemistry Laboratory, University of Buea, Buea, Cameroon
| | - Sherman L Z Jiokeng
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), UMR 7564 CNRS - Université de Lorraine, 405, rue de Vandœuvre, 54600, Villers-lès-Nancy, France
| | - Arnaud T Kamdem
- Institute of Microsystems Engineering IMTEK, Laboratory for Sensors, University of Freiburg, 79110, Freiburg, Germany
| | - Giscard Doungmo
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
- Institute of Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straβe 2, 24118, Kiel, Germany
| | - Bassetto C Victor
- Laboratoire d'Electrochimie Physique et Analytique, EPFL, Rue de l'Industrie, CH-1951, Sion, Switzerland
| | - Milica Jović
- Laboratoire d'Electrochimie Physique et Analytique, EPFL, Rue de l'Industrie, CH-1951, Sion, Switzerland
| | - Andreas Lesch
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale del Risorgimento 4, 40136, Bologna, Italy
| | - Ignas K Tonlé
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon.
| | - Hubert Girault
- Laboratoire d'Electrochimie Physique et Analytique, EPFL, Rue de l'Industrie, CH-1951, Sion, Switzerland
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7
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Deffo G, Tonleu Temgoua RC, Foukmeniok Mbokou S, Njanja E, Kenfack Tonlé I, Ngameni E. A sensitive voltammetric analysis and detection of Alizarin Red S onto a glassy carbon electrode modified by an organosmectite. SENSORS INTERNATIONAL 2021. [DOI: 10.1016/j.sintl.2021.100126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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8
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Phuekphong AF, Imwiset KJ, Ogawa M. Designing nanoarchitecture for environmental remediation based on the clay minerals as building block. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:122888. [PMID: 32937697 DOI: 10.1016/j.jhazmat.2020.122888] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/29/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Nanoarchitecture of hybrids materials based on clay minerals as nano building blocks for the environmental remediation is summarized with the emphasis on the utilization of layered clay minerals, especially smectite group of clay minerals, as nano building blocks for designing functional nanostructures for the adsorption of molecular contaminants from the environments. Smectites are well-known adsorbents of cationic contaminants, while surface modification of smectites with organoammonium ions has given hydrophobic and microporous characters to uptake nonionic organic contaminants from environments. Not only on the designed interactions between adsorbent-adsorbate for efficient and higher capacity adsorption, the states of the adsorbed nonionic organic compounds have been altered and varied by the modification of smectites as shown by the controlled release and specific catalytic reactions. The organically modified clays are classified from the nanoarchitecture, and the functions derived from the nanoarchitectures are discussed based on the structure-property relationship.
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Affiliation(s)
- Alisa Fern Phuekphong
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Kamonnart Jaa Imwiset
- School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Makoto Ogawa
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand.
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9
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Characterization and electrochemical properties of organomodified and corresponding derived carbonized clay. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Sensitive electrochemical detection of methyl parathion in the presence of para-nitrophenol on a glassy carbon electrode modified by a functionalized NiAl-layered double hydroxide. CR CHIM 2019. [DOI: 10.1016/j.crci.2018.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Zaabal M, Doulache M, Bakirhan NK, Kaddour S, Saidat B, Ozkan SA. A Facile Strategy for Construction of Sensor for Detection of Ondansetron and Investigation of its Redox Behavior and Thermodynamic Parameters. ELECTROANAL 2018. [DOI: 10.1002/elan.201800658] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Moufida Zaabal
- Laboratory of Physical Chemistry of Materials (LPCM)Faculty of Sciences(UATL) BP 37G Laghouat 03000 Laghouat Algeria
- Laboratory of Macromolecular, Synthesis and Macromolecular Thio-organicFaculty of Chemistry(USTHB) BP 32-16111 El-Alia Algeria
| | - Merzak Doulache
- Laboratory of Physical Chemistry of Materials (LPCM)Faculty of Sciences(UATL) BP 37G Laghouat 03000 Laghouat Algeria
- Laboratory of Storage and Valorization of Renewable Energies (LSVRE)Faculty of Chemistry(USTHB) BP 32 El Alia 16111 Algiers Algeria
| | - Nurgul K. Bakirhan
- Ankara UniversityFaculty of PharmacyDepartment of Analytical Chemistry Yenimahalle Ankara Turkey
- Hitit UniversityFaculty of Art&ScienceDepartment of Chemistry Corum Turkey
| | - Samia Kaddour
- Laboratory of Macromolecular, Synthesis and Macromolecular Thio-organicFaculty of Chemistry(USTHB) BP 32-16111 El-Alia Algeria
| | - Boubakeur Saidat
- Laboratory of Physical Chemistry of Materials (LPCM)Faculty of Sciences(UATL) BP 37G Laghouat 03000 Laghouat Algeria
| | - Sibel A. Ozkan
- Ankara UniversityFaculty of PharmacyDepartment of Analytical Chemistry Yenimahalle Ankara Turkey
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Ngassa GBP, Fafard J, Detellier C. Preparation of Organophilic Nanohybrid Kaolinite and Application to the Electrochemical Detection of Organic Pesticide. ELECTROANAL 2017. [DOI: 10.1002/elan.201700412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guy B. P. Ngassa
- Laboratoire de Chimie Analytique, Faculté des Sciences; Université de Yaoundé 1, B. P.; 812 Yaoundé Cameroun
- Centre de Recherche en Catalyse et Innovation et Département de Chimie; Université d'Ottawa; 10 Marie Curie, K1 N6 N5 Ottawa (Ontario) Canada
| | - Jonathan Fafard
- Centre de Recherche en Catalyse et Innovation et Département de Chimie; Université d'Ottawa; 10 Marie Curie, K1 N6 N5 Ottawa (Ontario) Canada
| | - Christian Detellier
- Centre de Recherche en Catalyse et Innovation et Département de Chimie; Université d'Ottawa; 10 Marie Curie, K1 N6 N5 Ottawa (Ontario) Canada
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Facile synthesis of Co xP decorated porous carbon microspheres for ultrasensitive detection of 4-nitrophenol. Talanta 2017; 179:448-455. [PMID: 29310259 DOI: 10.1016/j.talanta.2017.11.046] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 11/01/2017] [Accepted: 11/16/2017] [Indexed: 11/21/2022]
Abstract
A novel cobalt phosphide (CoxP, a mixture of CoP and Co2P) embedded within nitrogen-doped porous carbon microspheres was facilely prepared by pyrolysis of a composite precursor. The composite precursor was achieved by in-situ growth of Co-based zeolitic imidazolate framework (ZIF-67) on the Zn(PO4)x microspheres. The as-prepared CoxP decorated nitrogen-doped porous carbon microspheres (CoxP/NC) possess uniform distribution of graphite-encapsulated CoxP, a large surface area (826m2g-1) and abundant mesopores. It was found the CoxP/NC exhibited excellent electrocatalytic performances toward 4-nitrophenol (4-NP). Therefore, CoxP/NC was developed to fabricate an ultrasensitive electrochemical sensor for 4-NP by using differential pulse voltammetry (DPV). In comparison with glassy carbon electrode (GCE) and nitrogen-doped carbon (NC) modified GCE, the CoxP/NC modified GCE (CoxP/NC/GCE) showed a remarkable increase in DPV current toward 4-NP. Under optimized condition, an ultrahigh sensitivity of 20.9 (μA μmol-1 L) and a low detection limit of 2 × 10-9molL-1 (at a signal-to-noise ratio of 3, S/N = 3) for 4-NP were achieved. Additionally, the CoxP/NC/GCE was successfully applied to detect 4-NP in tap water with good recoveries for its attractive selectivity and repeatability, which indicated that CoxP/NC could be a promising candidate for analyzing 4-NP.
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Kenne Dedzo G, Pameté Yambou E, Topet Saheu MR, Ngnie G, Nanseu-Njiki CP, Detellier C, Ngameni E. Hydrogen evolution reaction at PdNPs decorated 1:1 clay minerals and application to the electrocatalytic determination of p -nitrophenol. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.07.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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New sensitive square-wave adsorptive stripping voltammetric determination of pesticide chlornitrofen, and an evaluation of its corrosivity towards steel agricultural equipment. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.07.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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