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Navaneethan D, Krishna SK. Physicochemical synthesis of activated carbon from Canna indica (biowaste) for high-performance supercapacitor application. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04955-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Chundu P, Dube E, Zinyama NP, Moyo M, Shumba M. Poly-Phthalocyanine-Doped Graphene Oxide Nanosheet Conjugates for Electrocatalytic Oxidation of Drug Residues. Front Chem 2021; 9:633547. [PMID: 34950634 PMCID: PMC8688842 DOI: 10.3389/fchem.2021.633547] [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: 11/25/2020] [Accepted: 10/04/2021] [Indexed: 11/13/2022] Open
Abstract
Donor and acceptor phthalocyanine molecules were copolymerized and linked to graphene oxide nanosheets through amidation to yield electrocatalytic platforms on glassy carbon electrodes. The platforms were characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, UV/Vis spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The fabricated electrochemical catalytic surfaces were then evaluated toward electrocatalytic detection of ascorbic acid and tryptophan. These were characterized by a wide linear dynamic range and low limits of detection and quantification of 2.13 and 7.12 µM for ascorbic acid and 1.65 and 5.5 µM for tryptophan, respectively. The catalytic rate constant was 1.86 × 104 and 1.51 × 104 M−1s−1 for ascorbic acid and tryptophan, respectively. The Gibbs energy for catalytic reactions was −17.45 and −14.83 kJ mol−1 depicting a spontaneous reaction on the electrode surface. The sensor platform showed an impressive recovery when applied in real samples such as fresh cow milk, in the range 91.71–106.73% for both samples. The developed sensor therefore shows high potential for applicability for minute quantities of the analytes in real biological samples.
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Affiliation(s)
- Prince Chundu
- Department of Chemical Sciences, Midlands State University, Gweru, Zimbabwe
| | - Edith Dube
- Department of Chemical Sciences, Midlands State University, Gweru, Zimbabwe
| | | | - Mambo Moyo
- Department of Chemical Sciences, Midlands State University, Gweru, Zimbabwe
| | - Munyaradzi Shumba
- Department of Chemical Sciences, Midlands State University, Gweru, Zimbabwe
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Abstract
Phthalocyanines are aromatic or macrocyclic organic compounds and attract great attention due to their numerous properties. They have many high-tech applications in different areas of the industry such as dyestuffs, thermal printing screens, photovoltaic solar cells, membrane catalytic reactors, semiconductor materials and gas sensors. In the last decade, electrochemical sensor studies have accelerated with the catalytic lighting. It plays a dominant role in the development and implementation of new generation sensors. The aim of this study is to review the electrochemical methods based on electrode modification with phthalocyanines and to shed light on new application areas of phthalocyanines. The focal point was based on the sensor applications of phthalocyanines in the determination of drugs, pesticides, organic materials and metals etc. by electrochemical methods. Experimental conditions and some validation parameters of the sensor applications such as metal phthalocyanine types, indicator electrodes, selectivity, working ranges, detection limits, and analytical applications were discussed. Consequently, this is the first review dealing with the applications of phthalocyanines in electrochemical sensors for the sensitive determination of analytes in a variety of matrices.
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Affiliation(s)
- Ersin Demir
- Department of Analytical Chemistry, Faculty of Pharmacy, Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey
| | - Hulya Silah
- Department of Chemistry, Faculty of Art & Science, Bilecik Şeyh Edebali University, Bilecik, Turkey
| | - Bengi Uslu
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
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Cheng Z, Dai M, Quan X, Li S, Zheng D, Liu Y, Yao R. Application of activated carbon supported cobalt(II) tetraaminophthalocyanine towards preparation of dimethyl disulfide. J PORPHYR PHTHALOCYA 2019. [DOI: 10.1142/s108842461950010x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Dimethyl disulfide (DMDS) is an important fine chemical that can be prepared by the refined Merox process of oxidation of sodium methyl mercaptide (SMM) in the presence of a catalyst. In this paper, a novel activated carbon (AC) supported cobalt(II) tetraaminophthalocyanine (AC-CoTAPc) catalyst was prepared by the chemical grafting method. EA, UV-vis, FT-IR, BET and XPS were used to characterize the structure of the new catalyst. The effects of reaction time, catalyst dosage, reaction temperature and oxygen pressure on SMM conversion per pass (CPP[Formula: see text], yield (Yield[Formula: see text] and purity of DMDS product (Purity[Formula: see text] were investigated to evaluate the catalytic performance of new AC-CoTAPc catalyst. The results show that free CoTAPc is easily dissolved in this DMDS product, which needs extra post treatment and cannot be reused. The supported catalyst AC-CoTAPc can easily solve these problems and can be properly reused four times to get Yield[Formula: see text] and CPP[Formula: see text] higher than 70% and 90%. Under optimum conditions, the Yield[Formula: see text] andCPP[Formula: see text] of the AC-CoTAPc catalyst could be as high as 87.4% and 98.1%, with a purity[Formula: see text]of DMDS product of above 99.9%. AC-CoTAPc exhibits better catalytic and reuse performance than the commercial AC-supported sulphonated cobalt(II) phthalocyanine (AC-CoPcS) catalyst and shows broad industrial application prospects.
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Affiliation(s)
- Zhiliang Cheng
- Chongqing Unis Chemical Company Ltd., Uranus A-13, North Star Road, Yubei District, Chongqing 401121, China
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, No. 69, Hongguang Avenue, Banan District, Chongqing 400054, China
| | - Mingxing Dai
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, No. 69, Hongguang Avenue, Banan District, Chongqing 400054, China
| | - Xuejun Quan
- Chongqing Unis Chemical Company Ltd., Uranus A-13, North Star Road, Yubei District, Chongqing 401121, China
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, No. 69, Hongguang Avenue, Banan District, Chongqing 400054, China
| | - Shuo Li
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, No. 69, Hongguang Avenue, Banan District, Chongqing 400054, China
| | - Daomin Zheng
- Chongqing Unis Chemical Company Ltd., Uranus A-13, North Star Road, Yubei District, Chongqing 401121, China
| | - Yaling Liu
- Chongqing Unis Chemical Company Ltd., Uranus A-13, North Star Road, Yubei District, Chongqing 401121, China
| | - Rujie Yao
- Chongqing Unis Chemical Company Ltd., Uranus A-13, North Star Road, Yubei District, Chongqing 401121, China
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Wang X, Yu X, Lin L, Liu J, Lin H, Liu G. Two metal–organic frameworks based on 2,5-thiophenedicarboxylic acid and semi-rigid bis-imidazole ligand: Luminescence, magnetism and electrocatalytic activities. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.01.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Mafuwe PT, Moyo M, Mugadza T, Shumba M, Nyoni S. Cobalt oxide nanoparticles anchored polyaniline-appended cobalt tetracarboxy phthalocyanine, modified glassy carbon electrode for facile electrocatalysis of amitrole. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-4131-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Shumba M, Nyokong T. Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1303679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Munyaradzi Shumba
- Department of Chemistry, Rhodes University, Grahamstown, South Africa
| | - Tebello Nyokong
- Department of Chemistry, Rhodes University, Grahamstown, South Africa
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