Article
Chemistry, Physical
P. A. Pushpanjali, J. G. Manjunatha, N. Hareesha, Edwin S. D'Souza, M. M. Charithra, N. S. Prinith
Summary: The study demonstrates the effective detection of cetirizine in the presence of paracetamol using a carbon nanotube paste electrode modified with electrochemically polymerized L-Leucine. By optimizing the experimental conditions, a calibration plot in the concentration range of 5 μM to 50 μM of CTZ was achieved with high recovery rates.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Analytical
Busra Kaynar, Gokce Ozturk, Dilek Kul
Summary: The electrochemical properties of quetiapine fumarate were studied using a multi-walled carbon nanotube modified electrode. The optimal concentration of multi-walled carbon nanotubes was determined. The oxidation process of quetiapine fumarate was found to be irreversible and controlled by adsorption. The linear ranges and detection limits for differential pulse stripping voltammetry and square-wave stripping voltammetry were determined. The methods were successfully applied for the analysis of quetiapine fumarate tablets. The groups responsible for the oxidation reaction of quetiapine fumarate were investigated using model substances.
Article
Chemistry, Analytical
Leyla Gidi, Jessica Honores, Jose Ibarra, Maria Jesus Aguirre, Roxana Arce, Galo Ramirez
Summary: In this study, the determination of gallic acid was conducted using surface-renewable carbon paste electrodes fabricated with multi-walled carbon nanotubes (MWCNT) and a mixture of N-octylpyridinium hexafluorophosphate (OPyPF6) ionic liquid with mineral oil (MO) as binder. The system exhibited remarkable amperometric sensor characteristics and improved electronic transfer. The electroanalytical study demonstrated a linear range of 4.98 +/- 0.25 to 74.1 +/- 2.2 μmol L-1 for gallic acid, with a detection limit of 2.70 +/- 0.08 μmol L-1 (S/N=3) and a sensitivity of 0.029 μA μmol(-1) L.
Article
Chemistry, Multidisciplinary
Hai D. Tran, Uyen P. N. Tran, Dinh Quan Nguyen
Summary: This study presents a method for the detection of Cd2+ and Pb2+ using a MWCNTs paste electrode and a mixture of ionic liquid. The feasibility and accuracy of the electrode were validated through experiments.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Sukanya, B. E. Kumara Swamy, J. K. Shashikumara, S. C. Sharma
Summary: A simple, novel, and cost-effective modified carbon paste electrode was fabricated for the detection of paracetamol. The electrode exhibited excellent electrocatalytic activity and fast electron transfer rate, resulting in accurate detection of paracetamol.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Arefeh Mohammadnavaz, Hadi Beitollahi, Sina Modiri
Summary: We developed a new electrochemical sensing platform for detecting L-Cysteine using a modified carbon paste electrode with multi-walled carbon nanotubes-Co3O4 nanocomoisite/benzoyl ferrocene/ionic liquid. The nanocomposite was fabricated through a facile hydrothermal protocol and characterized using various techniques. The modified electrode exhibited excellent catalytic activity towards L-Cys oxidation, as demonstrated by cyclic voltammetry. The sensor had a narrow detection limit, broad linear dynamic range, and good sensitivity.
INORGANICA CHIMICA ACTA
(2023)
Article
Engineering, Environmental
Shulan Hao, Liu Qian, Qianru Wu, Dong Li, Fangqian Han, Lihu Feng, Liantao Xin, Tao Yang, Shiying Wang, Jin Zhang, Maoshuai He
Summary: This study successfully synthesized high-quality single-walled carbon nanotubes (SWNTs) on layered double hydroxides (LDHs) containing Fe and FeCo using CO chemical vapor deposition (CVD). The effects of temperature and catalyst composition on the diameter and chirality distributions of SWNTs were investigated. It was found that subnanometer SWNTs were produced by both catalysts at low temperatures. The (6, 5) SWNTs were synthesized from LDHs containing bimetallic FeCo at 600 degrees C, and the chirality distribution was further narrowed by a two-phase extraction method.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
M. M. Charithra, J. G. Manjunatha
Summary: A novel voltammetric sensor for detecting Adrenaline was developed and tested in this study, showing enhanced sensing ability compared to traditional methods. The sensor demonstrated high selectivity, reproducibility, and an excellent antifouling property, making it a promising candidate for electrochemical sensing applications.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Hareesha Nagarajappa, Jamballi G. Manjunatha, Abdullah A. Al-Kahtani, Ammar M. Tighezza, Narges Ataollahi
Summary: The bare carbon nanotube paste electrode (BCNTPE) can be chemically modified for selective determination of riboflavin (RF) in the presence of dopamine (DA). A poly(titan yellow) modified carbon nanotubes paste electrode (PTYMCNTPE) was constructed using a simple and eco-friendly procedure and showed high electrocatalytic activity for the redox reaction of RF. The proposed sensor has great potential for the determination of RF in pharmaceutical samples.
Article
Engineering, Electrical & Electronic
N. Hareesha, J. G. Manjunatha, B. M. Amrutha, P. A. Pushpanjali, M. M. Charithra, N. Prinith Subbaiah
Summary: A simple and low-cost P(GA)LMWCNTPE sensor has been developed for the detection of indigo carmine (IC) in food and water samples, showing good sensitivity and reproducibility.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Shuaibiao Liu, Yehong Chen, Padonou-Kengue Patrick Dorsel, Chaojun Wu
Summary: By combining conductive materials and physical cross-linking, the area-specific capacitance of nanocellulose-based composite aerogel electrodes can be strengthened to obtain high-performance supercapacitors.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Analytical
Habib Razmi, Younes Bahadori
Summary: A simple and sensitive vitamin C sensor was developed based on chicken feet yellow membrane as a new electrode modification material for the first time. The sensor exhibited high catalytic capacity for electro-oxidation of vitamin C and good storage and operational stability. The advantages of the sensor include low cost, excellent catalytic activity, and simplicity of preparation.
MICROCHEMICAL JOURNAL
(2021)
Article
Polymer Science
Bangwei Wan, Yang Yang, Rongxin Guo, Zhengming Fan, Peng Deng, Shibo Zhang
Summary: A MWCNT/VMQ composite was prepared using DCP and DBPMH as vulcanizing agents, and the effects of the different agents on the properties of the composite were investigated. The DCP-vulcanized composites showed better mechanical properties and stability, as well as a more stable damage-reconstruction mechanism for the MWCNT network during deformation. An analytical model based on the tunnel effect theory confirmed the potential of this composite for real-time strain monitoring for large deformation structures.
Review
Chemistry, Multidisciplinary
Pranjala Tiwari, Dawid Janas
Summary: This review article examines the fundamental phenomenon of utilizing single-walled carbon nanotubes (SWCNTs) as pseudocapacitive electrodes and the advancements in incorporating various conducting materials in their matrix. It provides a detailed overview of the latest technological advances and achievements of SWCNT hybrids as primary electrodes in charge storage devices, including binary composites and ternary hybrids, while also highlighting the pressing challenges in this field.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Analytical
Nihal Deligonul, Ilyas Yildiz, Sema Bilgin, Isa Gokce, Omer Isildak
Summary: Developing a selective sensor for a target metal type is challenging. In this study, a novel polymeric membrane electrode (PME) was developed using Green Fluorescent Protein (GFP) as an ionophore for the determination of bismuth ions. The PME exhibited high sensitivity and Nernstian behavior.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Suresh N. Kodlady, B. Narayana, B. K. Sarojini, B. U. Gauthama, J. G. Manjunatha
Summary: A new colorimetric anion sensor ATH was synthesized and confirmed, which showed high selectivity for detecting fluoride ions and responded to fluoride ion stimulation through deprotonation and intramolecular charge transfer sensing mechanism. The sensing mechanism of fluoride ions was confirmed and the binding constant and binding ratio between fluoride ions and probe ATH were determined.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Karnayana P. Moulya, Jamballi G. Manjunatha, Ahmed Muteb Aljuwayid, Mohamed A. Habila, Mika Sillanpaa
Summary: The electrode for analyzing tartrazine was fabricated by electro-polymerization of niacin on the electrode surface. Cyclic voltammetry, electrochemical impedance spectroscopy, and field emission scanning electron microscopy were used to study the electrochemical response and surface morphology of the electrode. Various parameters were analyzed, and the limits of detection and quantification for tartrazine were determined. The fabricated electrode was also used to analyze tartrazine in food samples.
RESULTS IN CHEMISTRY
(2023)
Review
Biochemical Research Methods
Madikeri Manjunth Charithra, Jamballi Gangadarappa Gowda Manjunatha, Nagarajappa Hareesha, Subbaiah Nambudamada Prinith, Doddarsikere K. Ravishankar, Huligerepura J. Arpitha
Summary: This review article focuses on the voltammetric detection of neurotransmitters using carbon-based electrodes, highlighting their simplicity and high sensitivity. The achievements in the determination of various neurotransmitters with high selectivity and sensitivity using carbon-based electrodes are surveyed, with emphasis on the promising modification of the working electrode for further analysis.
COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING
(2023)
Article
Chemistry, Analytical
N. Hareesha, J. G. Manjunatha, T. Girish, Zeid A. ALOthman
Summary: This research presents a low-cost and green electrochemical method for the detection of the ecological toxin catechol. The electro-polymerised methyl orange-activated carbon paste electrode (Poly(MO)ACPE) was used as an electrocatalyst. The Poly(MO)ACPE demonstrated good electrocatalytic activity for the redox reaction of catechol, showing higher peak current response compared to the bare carbon paste electrode (BCPE).
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
N. Hareesha, J. G. Manjunatha, C. Raril, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpaa
Summary: An electrochemically polymerized glutamine-clustered graphite paste electrode surface was developed for the electrochemical detection of hazardous catechol molecules. The electrode demonstrated good electrocatalytic activity and stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
B. Kanthappa, J. G. Manjunatha, N. Hareesha, Ammar M. M. Tighezza, Munirah D. D. Albaqami, Mika Sillanpaa
Summary: The study developed a sensitive, economical, green, and simple voltammetric sensor for detecting the redox behavior of rutin using an electrochemical polymerization method. The modified electrode (Poly(DL-PN)MGPE) demonstrated higher electrocatalytic activity and active sites compared to the bare graphene paste electrode (BGPE), enabling the analysis of rutin in phosphate-buffered saline (PBS) of pH 6.5. The Poly(DL-PN)MGPE exhibited excellent reproducibility, antifouling nature, repeatability, and stability for rutin detection, with a detection limit of 8.31 nM. The applicability of Poly(DL-PN)MGPE for rutin detection in citrus fruit juice samples was also discussed.
Article
Chemistry, Analytical
Kanthappa Bhimaraya, Jamballi G. Manjunatha, Karnayana P. Moulya, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpaa
Summary: The electrochemically polymerized glycine layered carbon paste electrode (EPGNLCPE) was used as an easy and rapid analytical tool for the analysis of levofloxacin (LN). The EPGNLCPE sensor, compared to the bare carbon paste electrode (BCPE), showed improved surface features and activities. Under optimized conditions, the differential pulse voltammetry method using EPGNLCPE exhibited good linearity, low limit of detection, and low limit of quantification for the analysis of LN. Real-time application of the sensor showed good recovery of LN in medicinal samples.
Article
Multidisciplinary Sciences
N. Hareesha, J. G. Manjunatha, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpaa
Summary: In this research, a low-cost, simple, and green carbon nanotube paste electrode activated with electropolymerized riboflavin (PRF) was successfully used for the selective and sensitive detection of catechol (CT) in the presence of resorcinol (RS) in 0.2 M phosphate buffer solution. The PRF-activated electrode showed improved electrochemical properties compared to a bare carbon nanotube paste electrode (BCNTPE), including increased electrochemical current and decreased electrochemical potential, resulting in outstanding sensitivity, stability, selectivity, reproducibility, and repeatability for the redox feature of CT. The CT concentrations were quantified using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods, with detection and quantification limits of 0.025 mu M and 0.085 mu M (CV method) and 0.0039 mu M and 0.0132 mu M (DPV method), respectively. The prepared PRFMCNTPE material showed promising results for real-time detection of CT in environmentally important tap water samples.
Article
Engineering, Electrical & Electronic
J. L. Nikhil, J. G. Manjunatha, N. Hareesha, B. Kanthappa, C. S. Karthik, P. Mallu, Zeid A. ALOthman
Summary: This study presents the analysis of electrochemical behavior of methyl orange (MO) with phosphate buffer solution in natural water sample using a carbon paste electrode modified with L-serine (LS). The modified electrode showed intensified electrochemical activity for the oxidation of MO, with 1.5-fold enhancement compared to the unmodified electrode. The results suggest that the PLSMCPE has potential for use in environmental monitoring and water quality analysis applications.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kanthappa Bhimaraya, Jamballi G. Manjunatha, Hareesha Nagarajappa, Ahmed Muteb Aljuwayid, Mohamed A. Habila, Mika Sillanpaa
Summary: The current research aimed to design a simple, inexpensive, and environmentally friendly electrochemical sensor for the detection of the sensitive estriol hormone (ETL). Through the development of modified electrodes, the sensor exhibited enhanced electrocatalytic activity and a higher number of electrochemical active spots. The sensor demonstrated a wide detection range, high sensitivity, and good stability, making it suitable for the detection of ETL in medicinal samples.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2023)
Article
Food Science & Technology
Girish Tigari, Jamballi G. Manjunatha, Hareesha Nagarajappa, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpaa
Summary: The article presents the use of eco-friendly and efficient materials including riboflavin, graphite, and graphene nanoplatelets in the fabrication of electrochemical sensors. The modified electrode, poly(riboflavin)/NaOH/graphene-nanoplatelets modified graphite paste electrode (PRFGMGPE), demonstrates excellent binding selectivity and anti-interference features for rutin detection. The electrode shows high sensitivity and low detection limit using differential pulse voltammetry (DPV), making it suitable for real-time testing in tea and blood serum samples with good recoveries.
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2023)
Article
Chemistry, Multidisciplinary
M. Asha, J. G. Manjunatha, K. P. Moulya, Samar A. Aldossari, Mohammed S. Mushab, S. Nagashree
Summary: The purpose of this study was to develop an electrochemical method for the detection of methyl orange and evaluate its behavior on different electrodes. The results showed that PRFMCPS had good stability and reproducibility under certain conditions, as determined by parameters such as pH value and scan rate. Additionally, the electrode showed a high detection limit and quantification limit for methyl orange.
MONATSHEFTE FUR CHEMIE
(2023)
