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Recent Advances in the Use of CoPc-MWCNTs Nanocomposites as Electrochemical Sensing Materials

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Summary: Here, nanocomposites of thallium oxide doped multi-walled carbon nanotube (Tl2O MWCNT NCs) were synthesized using a wet-chemical method. The fabricated Tl2O MWCNT NCs were fully characterized using various optical techniques, and the NCs were then utilized to modify a glassy carbon electrode for the selective and sensitive detection of L-cysteine. The performance of the sensor was evaluated using analytical sensing indexes, and the results showed that the sensor exhibited high sensitivity, low detection limits, and good durability. The proposed sensor was successfully applied for the detection of L-cysteine in real biological samples and yielded satisfactory results.

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Effects of multi-walled carbon nanotube/graphene oxide-based sizing on interfacial and tribological properties of continuous carbon fiber/poly (ether ether ketone) composites

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MATERIALS CHEMISTRY AND PHYSICS (2022)

Article Chemistry, Physical

Coordination engineering of cobalt phthalocyanine by functionalized carbon nanotube for efficient and highly stable carbon dioxide reduction at high current density

Hongdong Li et al.

Summary: The study shows that axial coordination engineering between carbon carriers and molecular catalysts can significantly enhance the efficiency and stability of catalysts in electrocatalytic CO2 reduction reactions. Introducing NH2 groups into carbon nanotube-supported cobalt phthalocyanine catalysts can effectively increase the turnover frequency and CO selectivity.

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Article Chemistry, Multidisciplinary

A web of poly(bisbenzimidazolatocopper(ii)) around multiwalled carbon nanotubes for the electrochemical detection of hydrogen peroxide

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Operando HERFD-XANES and surface sensitive Δμ analyses identify the structural evolution of copper(II) phthalocyanine for electroreduction of CO2

Bingbao Mei et al.

Summary: Quantitatively understanding the impact of atomic-level catalyst structural changes on the reactivity of the electrochemical CO2 reduction reaction is challenging. Operando high-energy resolution fluorescence-detected X-ray absorption spectroscopy was used in this study to identify the dynamic structural transformation of active sites of a model copper(II) phthalocyanine catalyst. The approach developed is a novel and powerful technique for elucidating complex catalytic mechanisms and may contribute to the rational design of highly effective catalysts.

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Article Chemistry, Analytical

Nonenzymatic Lactic Acid Detection Using Cobalt Polyphthalocyanine/Carboxylated Multiwalled Carbon Nanotube Nanocomposites Modified Sensor

Wenqing Shao et al.

Summary: A novel cobalt polyphthalocyanine/carboxylic acid functionalized multiwalled carbon nanotube nanocomposite was successfully fabricated for lactic acid detection, providing excellent electrical conductivity and resistance to aggregation. The electrode showed superior electrochemical performance with a wide detection range and high selectivity against various interferents. It also demonstrated potential for rapid monitoring applications in quantifying lactic acid in rice wine samples.

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Article Chemistry, Multidisciplinary

PHOTOCATALYTIC OXIDATION OF BUTAN-2-OL OVER MULTI WALLED CARBON NANOTUBES /COBALT PHTHALOCYNANINE COMPOSITES

Eman Jassim Mohammad et al.

Summary: This study involves the synthesis of new substituted cobalt phthalocyanine derivatives and the preparation of nano composites materials. The activity of these materials was investigated in a photocatalytic oxidation reaction, and the effects of different reaction conditions and parameters were evaluated.

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Preparation of Horseradish Peroxidase Modified Gold Nanoparticle/Coiled Carbon Nanotube Nanocomposite and its application for bromate and nitrite determination

Yucen Yao et al.

Summary: This study electrochemically deposited gold nanoparticles (AuNPs) on the surface of coiled carbon nanotubes (CCNTs) modified carbon ionic liquid electrode (CILE) and used Nafion film to immobilize horseradish peroxidase (HRP), resulting in a modified electrode. The HRP immobilized on the AuNPs-CCNTs composite retained its biostructure and exhibited quasi-reversible electrochemical behavior on the Nafion/HRP/AuNPs-CCNTs/CILE. The electrocatalytic activities towards KBrO3 and NaNO2 were further investigated, and the apparent heterogeneous electron transfer rate constant (ks), charge transfer coefficient (a), and Michaelis-Menten constants (KappM) were calculated. The linear detection range for KBrO3 was 0.5 to 10.0 mmol.L-1 with a detection limit of 0.16 mmol.L-1, while for NaNO2, the current response showed two linear sections in the concentration range of 0.1 to 0.7 mmol.L-1 and 0.9 to 3.0 mmol.L(-)1 with a low detection limit of 0.03 mmol.L-1. The sensor was successfully used for the analysis of real water samples, demonstrating its practical application.

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE (2022)

Article Electrochemistry

Electrocatalytic Determination of Nevirapine Using a Platinum Electrode Modified with a Polymeric CoPc-Nafion-carbon nanotube Composite

Kevin Kantize et al.

Summary: We report a Pt-modified electrode fabricated by sequential drop casting of a nanoconjugate comprising a tetra-substituted coumarin cobalt phthalocyanine and carboxylic-acid-functionalized multiwalled carbon nanotubes, followed by immobilization of a Nafion perfluorinated resin solution. The electrode was used for the voltammetric determination of the antiretroviral drug nevirapine and showed excellent discriminatory sensing abilities toward selected organic contaminants.

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE (2022)

Article Chemistry, Physical

Improving the lifetime of hybrid CoPc@MWCNT catalysts for selective electrochemical CO2-to-CO conversion

Changzhe Sun et al.

Summary: The stability of cobalt phthalocyanine (CoPc) complexes in CO2 electroreduction is affected by mechanical and chemical degradation. Iron contamination causes the observable degradation of the CoPc@MWCNT hybrid catalyst. Therefore, careful purification of catalyst materials is necessary to maintain catalyst performance.

JOURNAL OF CATALYSIS (2022)

Article Chemistry, Analytical

Nanoporous Cauliflower-like Pd-Loaded Functionalized Carbon Nanotubes as an Enzyme-Free Electrocatalyst for Glucose Sensing at Neutral pH: Mechanism Study

Abdelghani Ghanam et al.

Summary: This study proposes a novel nanocatalyst consisting of functionalized carbon nanotubes supporting nanoporous cauliflower-like Pd nanostructures for enzyme-free glucose electrooxidation reaction in a neutral medium. The nanocatalyst was prepared using a cost-effective and straightforward method, and the parameters affecting its morphology, structure, and catalytic properties were investigated. The nanocatalyst exhibited a wide linear range, high sensitivity, and low detection limit for glucose, and it also possessed fast response, low cost, reusability, and poison-free characteristics.

SENSORS (2022)

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Effects of Electrolytes on the Electrochemical Impedance Properties of NiPcMWCNTs-Modified Glassy Carbon Electrode

Sheriff A. Balogun et al.

Summary: The supercapacitive properties of synthesized nickel phthalocyanine multiwalled carbon nanotubes nanocomposite on a glassy carbon electrode were investigated in four different electrolytes. The successful synthesis of the nanocomposite was confirmed using various techniques. The modified electrode showed excellent supercapacitive behaviors, with the highest specific capacitance achieved in 0.1 M PBS (pH 7). The GCE-NiPcMWCNTs electrode demonstrated the fastest electron transport capability and the highest power density in H2SO4 electrolyte.

NANOMATERIALS (2022)

Article Chemistry, Multidisciplinary

Tetraphenolphthalein Cobalt(II) Phthalocyanine Polymer Modified with Multiwalled Carbon Nanotubes as an Efficient Catalyst for the Oxygen Reduction Reaction

Giddaerappa et al.

Summary: A novel phenolphthalein bearing cobalt(II) phthalocyanine polymer was synthesized as an efficient catalyst for ORR, and a hybrid composite was prepared to enhance its catalytic response. The hybrid composite electrode exhibited better ORR activity compared to the benchmark catalyst.

ACS OMEGA (2022)

Article Chemistry, Analytical

A high-performance electrochemical sensor based on a mesoporous silica/titania material and cobalt(II) phthalocyanine for sensitive pentachlorophenol determination

Marilia Reginato de Barros et al.

Summary: The synthesis and characterization of a novel titania/silica hybrid xerogel subsequently modified with 4-methylpyridine (4-Pic), named TiSi4Pic(+)Cl(-), is reported. Anchoring cobalt(II) phthalocyanine (CoTsPc) in TiSi4Pic(+)Cl(-) showed greater electroanalytical sensitivity over other sensors built with these materials. A novel electroanalytical method was developed to quantify the noxious biocide pentachlorophenol (PCP) for environmental monitoring, which exhibited high accuracy.

MICROCHIMICA ACTA (2022)

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Efficient catalytic oxidation of benzyl alcohol by tetrasubstituted cobalt phthalocyanine-MWCNTs composites

Suhong Qiu et al.

Summary: In this study, tetra-[alpha-(p-formyl) phenoxy] phthalocyanine cobalt (II)/multiwalled carbon nanotubes (CoPc/ MWCNTs) composites were prepared through the interaction between CoPc and MWCNTs. The structures of the composites were characterized using UV-vis spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. The catalytic efficiency of the composites in the oxidation reaction of benzyl alcohol was investigated under different reaction parameters.

SOLID STATE SCIENCES (2022)

Article Chemistry, Multidisciplinary

Novel Schiff base iron(ii) phthalocyanine with composite MWCNTs on modified GCE: electrochemical sensor development for paracetamol

Mounesh et al.

Summary: The synthesis and characterization of novel peripherally tetra-substituted Schiff base iron(ii) phthalocyanines are reported in this study. The electrochemical sensing performance of the FeTClBCTCAPc@MWCNTs/GC electrode towards paracetamol was evaluated and found to have better electrocatalytic activity compared to the MWCNT-modified electrode. The proposed method was successfully applied to the determination of PA in commercial tablet samples.

REACTION CHEMISTRY & ENGINEERING (2022)

Article Electrochemistry

Electroreduction of oxygen on cobalt phthalocyanine-modified carbide-derived carbon/carbon nanotube composite catalysts

Reio Praats et al.

Summary: In this study, composite materials based on carbide-derived carbon (CDC) and carbon nanotubes (CNT) modified with Co phthalocyanine (CoPc) were used as electrocatalysts for the oxygen reduction reaction (ORR). By adjusting the ratio of CDC to CNT, composite catalysts with higher CNT content exhibited enhanced ORR electrocatalytic activity. The best-performing catalyst was further tested in an anion exchange membrane fuel cell (AEMFC), showing excellent performance with a peak power density of 473 mW cm(-2).

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2021)

Article Chemistry, Analytical

Sensitive acetaminophen electrochemical sensor with amplified signal strategy via non-covalent functionalization of soluble tetrahydroxyphthalocyanine and graphene

Yan-mei Shi et al.

Summary: A new amplified signal strategy for acetaminophen electrochemical sensor was developed using a soluble zinc tetrahydroxyphthalocyanine-reduced graphene oxide nanocomposite as an improved electrode material. The sensor showed a sensitive and selective electroanalytical method for AC, with linear response in different concentration ranges and excellent selectivity, reproducibility, and long-term stability.

MICROCHEMICAL JOURNAL (2021)

Article Chemistry, Analytical

Decorated CoPc with appliance of MWCNTs on GCE: Sensitive and reliable electrochemical investigation of heavy metals

Mounesh et al.

Summary: The CoTEIndCAPc/MWCNTs/GC electrode showed excellent electrocatalytic properties for detecting Cd2+ and Pb2+ with high sensitivity and diffusion-controlled electro-oxidation of the analytes. The fabricated sensors are cost-effective, easy to prepare, and suitable for real sample analysis.

MICROCHEMICAL JOURNAL (2021)

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Preparation of modified multi-walled carbon nanotubes as a reinforcement for epoxy shape-memory polymer composites

Yanling Wang et al.

Summary: The study shows that adding a small amount of epoxy-modified MWCNTs can significantly improve the mechanical properties and thermal resistance of ESMPs without affecting their shape-memory performance.

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Ultrathin Cobalt Phthalocyanine@Graphene Oxide Layer-Modified Separator for Stable Lithium-Sulfur Batteries

Chunli Shen et al.

Summary: An ultrathin and lightweight layer of Co phthalocyanine loaded graphene oxide fabricated on a polypropylene separator shows great potential in improving the cycling stability and specific capacity of lithium-sulfur batteries, by inhibiting the shuttle effect and facilitating the conversion of intermediate polysulfides.

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Electrochemical fabrication and supercapacitor performances of metallo phthalocyanine/functionalized-multiwalled carbon nanotube/polyaniline modified hybrid electrode materials

Ozge Gorduk et al.

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JOURNAL OF ENERGY STORAGE (2021)

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Electrochemical detection of bisphenol a on a MWCNTs/CuFe2O4 nanocomposite modified glassy carbon electrode

Mehdi Baghayeri et al.

Summary: In this study, a novel electrochemical sensor based on MWCNTs/CuFe2O4 nanocomposite modified GCE was introduced for detecting BPA. The sensor showed a low detection limit and good selectivity and reproducibility for BPA determination in different real samples.

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Effect of phthalocyanines supported carbon nanotube for the catalytic oxidation of benzyl alcohol

Luying Wang et al.

Summary: A series of tetra-substituted metal phthalocyanine-multi-walled carbon nanotube composites were synthesized and characterized, with the copper phthalocyanine composite showing the best catalytic activity in the oxidation of benzyl alcohol. The selectivity of benzaldehyde reached 87%, with a yield of 61%.

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Cobalt porphyrin immobilized on the TiO2 nanotube electrode for CO2 electroreduction in aqueous solution

Shengshen Gu et al.

Summary: In this study, the axial coordination of drop-casting solvent to CoTPP and the porphyrin structure were found to have significant effects on the catalytic performance of the CO2 ERR reaction. Pyridine demonstrated a stronger coordination bond to CoTPP compared to DMF and THE, resulting in the highest efficiency among the tested solvents. However, introducing -COOMe substituents in CoTPP weakened the coordination bond, leading to a detrimental effect on CO2 ERR. Manipulating the coordination environment around the metal center of the immobilized catalyst is crucial in designing an efficient electrocatalytic system.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Mapping experimental and theoretical reactivity descriptors of fe macrocyclic complexes deposited on graphite or on multi walled carbon nanotubes for the oxidation of thiols: Thioglycolic acid oxidation

Ricardo A. Matute et al.

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Selective and Trace Level Detection of Hydrazine Using Functionalized Single-Walled Carbon Nanotube-Based Microelectronic Devices

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Iron phthalocyanine with coordination induced electronic localization to boost oxygen reduction reaction

Kejun Chen et al.

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Novel Tetracinnamide Cobalt (II) Phthalocyanine Immobilized on MWCNTs for Amperometic Sensing of Glucose

K. R. Mounesh et al.

ANALYTICAL CHEMISTRY LETTERS (2020)

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Covalently Grafting Cobalt Porphyrin onto Carbon Nanotubes for Efficient CO2 Electroreduction

Minghui Zhu et al.

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Synthesis of asymmetric zinc phthalocyanine supported on multi-walled carbon nanotubes and its improvement of catalytic activity on styrene oxidation

Qingping Li et al.

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Multiwalled carbon nanotube-based nanosensor for ultrasensitive detection of uric acid, dopamine, and ascorbic acid

Aysun Savk et al.

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Aqueous Electrochemical Reduction of Carbon Dioxide and Carbon Monoxide into Methanol with Cobalt Phthalocyanine

Etienne Boutin et al.

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Carbon nanotube ensembled hybrid nanocomposite electrode for direct electrochemical detection of epinephrine in pharmaceutical tablets and urine

K. Koteshwara Reddy et al.

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Electrochemical determination diethylstilbestrol by a multi-walled carbon nanotube/cobalt phthalocyanine film electrode

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