Article
Chemistry, Analytical
Veeresh A. Sajjan, Shambhulinga Aralekallu, Manjunatha Nemakal, Manjunatha Palanna, C. P. Keshavananda Prabhu, Lokesh Koodlur Sannegowda
Summary: In this study, a Schiff-base embedded cobalt (II) complex was successfully prepared and characterised, followed by modification of glassy carbon electrode for the electroanalytical detection of 4-nitrophenol. The GCE/CoTTIMPPc exhibited excellent performance in terms of stability, sensitivity, reproducibility and reliability, demonstrating its potential for environmental monitoring applications.
MICROCHEMICAL JOURNAL
(2021)
Article
Acoustics
Reshma Kaimal, Victor Vinoth, Hector Valdes, Belqasem Aljafari, Sambandam Anandan, Amol Shrikrishna Salunke, Ramalinga Viswanathan Mangalaraja
Summary: A facile electrochemical method has been developed for glutathione sensing using novel glassy carbon electrode composed of graphene quantum dots (GQDs) embedded on amine-functionalized silica nanoparticles (SiNPs). The newly developed electrode exhibits a good response to glutathione with a wide linear range and a low detection limit, and it shows highly attractive electrocatalytic activity towards glutathione detection in neutral media. This electrode also provides outstanding selectivity, reproducibility, long-term stability, and can be used in the presence of interferences typically found in real sample analysis.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Engineering, Environmental
Kuppusamy Rajesh, Deivasigamani Ranjith Kumar, P. Balaji Bhargav, R. Manigandan, Nafis Ahmed, C. Balaji, Jae-Jin Shim
Summary: A novel carbon dot-Vanadium pentoxide (C-dot-V2O5) nanoporous material was synthesized, and its incorporation of C-dot into the V2O5 lattice was confirmed. The fabricated C-dot-V2O5/GCE electrode showed high electrochemical surface area, uniform pore size, and electron transfer rate constant, enabling the detection of Bisphenol A (BPA) with high sensitivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Ruslan Heriberto de Diego Almeida, Fabiola Monroy-Guzman, Carlos Rosendo Arganis Juarez, Juan Manriquez Rocha, Erika Bustos Bustos
Summary: This study demonstrates the successful detection and quantification of actinides including Th, U, Pu, Am, and Cm in aqueous media at ppt level using modified graphite electrodes with phthalocyanine. By modeling the cyclic voltammetry data with Aoki's model, the electrochemical methods show great potential for identifying and quantifying actinides.
Article
Materials Science, Multidisciplinary
Min Hee Joo, So Jeong Park, Sung-Min Hong, Choong Kyun Rhee, Youngku Sohn
Summary: In this study, a large dataset of lanthanide (III) ions' electrochemical behaviors and electrodeposition on bare and terpyridine-functionalized Ti sheets was established. The experimental results demonstrated that the electrodeposited lanthanide materials were similar lanthanide complexes, which could be valuable for understanding lanthanide ions' electrochemical behaviors and improving recovery methods.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Nilesh S. Dumore, Mausumi Mukhopadhyay
Summary: The PtNPs-SeNPs-FTO nanocomposites, developed as an electrochemical sensor via electrochemical deposition method, were used for hydrogen peroxide detection. Morphological and structural studies confirmed the synthesis and growth of the nanocomposites on FTO substrate. The synthesized PtNPs and SeNPs showed nano-flower and spherical morphology, respectively. The nanocomposites exhibited a wide range of linear concentration response and fast response time, with high selectivity towards hydrogen peroxide.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Physics, Applied
A. Harshavardhan, Santhosh Bullapura Matt, M. Ijaz Khan, K. K. Prakash, Maha Abdallah Alnuwaiser, V. S. Betageri, Manjappa Sidlinganahalli
Summary: In this study, SnO2 nanoparticles were successfully prepared using Nelumbo nucifera leaves extract as a reducing agent. The synthesized material showed enhanced electrochemical sensing performance for dopamine detection compared to the bare electrode.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Biotechnology & Applied Microbiology
Luana Dalagrana dos Santos, Vitor Antonio Vitale Ribeiro, Byanca Pereira Moreira de Oliveira, Mario Henrique Montazzolli Killner, Odinei Hess Goncalves, Evandro Bona
Summary: This study developed carbon paste electrodes modified with nanoparticles of copper and iron, which showed superior performance compared to commercial glassy carbon electrodes. The low cost of the electrochemical system is highlighted as the main advantage.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Energy & Fuels
Giddaerappa, Nemakal Manjunatha, Shantharaja, Mirabbos Hojamberdiev, Lokesh Koodlur Sannegowda
Summary: In this study, a novel nitrogen-rich palladium amide bridge hippuric acid phthalocyanine complex (PdTAHAPc) is synthesized and combined with multi-walled carbon nanotubes to prepare a hybrid composite electrode. The hybrid composite electrode exhibits superior specific capacitance and stability in sulfuric acid electrolyte.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Rahim Ullah, Muhammad Asim Rasheed, Shafqat Abbas, Khalil-ul Rehman, Attaullah Shah, Karim Ullah, Yaqoob Khan, Maryam Bibi, Mashkoor Ahmad, Ghafar Ali
Summary: In this study, Co3O4 modified ATNTs were used for the electrochemical sensing of H2O2. The sensitivity and limit of detection improved with the modification of ATNTs with Co3O4, but the precursor concentration needs to be carefully considered.
CURRENT APPLIED PHYSICS
(2022)
Article
Chemistry, Applied
Joanna Szymczak, Tomasz Rebis, Michal Kotkowiak, Barbara Wicher, Lukasz Sobotta, Ewa Tykarska, Jadwiga Mielcarek, Michal Kryjewski
Summary: Three regioisomers of L-menthol-substituted magnesium(II) phthalocyanine were obtained and characterized, with one of them having its crystal structure determined. The compounds exhibited maxima in the Q-band, varying quantum yields for fluorescence and singlet oxygen generation, as well as specific oxidation and reduction behaviors in voltammetric studies. DFT methods were used to calculate IR and UV-Vis spectra and optical band gap.
Article
Materials Science, Multidisciplinary
Vinit Sharma, Pardeep Singh, Anil Kumar, Neeraj Gupta
Summary: The detection of dopamine in medicinal and human biological samples has become an area of great interest for researchers. Carbon nanofiber (CNF) supported nickel nanoparticles (Ni@CNF) were prepared and characterized for their electrochemical properties. The modified electrode showed superior response, a broad linear detection range, low detection limit, and excellent selectivity. It was also successfully applied for the detection of dopamine in pharmaceutical and biological samples with good recovery outcomes.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Alicja Stachowiak, Kamil Kedzierski, Boleslaw Barszcz, Kamil Kotwica, Danuta Wrobel
Summary: Spectroscopic and electrochemical studies were conducted to determine the energy gaps of four commercially available phthalocyanines, revealing the influence of molecular structure on the energy gaps. Experimental results were highly compatible with DFT calculations, but MP2 method results showed significant discrepancies with both.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Electrical & Electronic
Nilesh S. Dumore, Mausumi Mukhopadhyay
Summary: A commercial graphene-amine (CGA) and synthesized selenium nanoparticle (SSeNP) nanocomposite coated on the surface of fluorine-doped tin oxide (SSeNPs-CGA-FTO) substrate was developed for H2O2 detection. The electrochemical sensors showed a linear response range from 0.1 mM to 20 mM with low detection limits of 0.1 mM and 0.05 mM for CGA-FTO and SSeNPs-CGA-FTO, respectively. The SSeNPs-CGA-FTO-based sensors also demonstrated higher selectivity towards H2O2.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Harjot Kaur, Karamveer Sheoran, Samarjeet Singh Siwal, Reena V. Saini, Adesh Kumar Saini, Walaa F. Alsanie, Vijay Kumar Thakur
Summary: A viable electrochemical approach using a silver nanoparticle-doped 2-aminodiphenylamine electrode has been developed for the detection of dopamine in uric acid. This method shows outstanding sensitivity, selectivity, and strength, making it suitable for pharmaceutical and biological specimen analysis.
Article
Electrochemistry
C. P. Keshavananda Prabhu, Shambhulinga Aralekallu, Manjunatha Palanna, Veeresh Sajjan, B. Renuka, Lokesh Koodlur Sannegowda
Summary: The report focuses on the design and development of a new catalyst, ZnTBImPc, for electrochemical sensor applications with low cost, high selectivity, and sensitivity for detecting ammonia. The catalyst is prepared with a high yield and characterized using various techniques, showing promising results for detecting ammonia with linear behavior and high sensitivity. The efficiency and selectivity of the catalyst are compared with a composite hybrid electrode, demonstrating its potential for practical applications.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Shambhulinga Aralekallu, Ravikumar Thimmappa, Zahid Manzoor Bhat, Mruthyunjayachari Chattanahalli Devendrachari, Neethu Christudas Dargily, Sanchayita Mukhopadhyay, Alagar Raja Kottaichamy, Musthafa Ottakam Thotiyl
Summary: This study demonstrates an ultra-high-capacity metal-ion battery using a unique cathode design and acidic aqueous electrolyte, capable of reversibly reducing hexacyanometallate through wireless charging with magnetite particles. The structural flexibility of the magnetite particles leads to a high cumulative capacity battery, offering opportunities for fast and remote charging with minimal power losses.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Analytical
Shantharaja, Manjunatha Nemakal, Giddaerappa, Subramanya Gopal Hegde, Lokesh Koodlur Sannegowda
Summary: Biomolecules like adenine and guanine play important roles in DNA and RNA molecules, and their alteration and deficiency can lead to health issues. This paper presents a method using a Cu(II)TPTAPc film-modified electrode for simultaneous determination and monitoring of adenine and guanine. The electrode showed good sensitivity and selectivity.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Krishnappa B. Badiger, Giddaerappa, Ramesha Hanumanthappa, Lokesh Koodlur Sannegowda, Kantharaju Kamanna
Summary: An efficient and economical synthesis of pyrano[2,3-c]pyrazoles and pyrazolyl-4H-chromenes using Water Extract of Mango Peel Ash (WEMPA) as a catalyst under microwave irradiation is described. The selected compounds exhibit significant antioxidant activity, making this a sustainable and environmentally friendly method for chemical synthesis.
Article
Engineering, Environmental
Kenkera Rayappa Naveen, Hyuna Lee, Lee Hyun Seung, Young Hun Jung, C. P. Keshavananda Prabhu, Subramanian Muruganantham, Jang Hyuk Kwon
Summary: In this study, two deep blue MR-TADF emitters, TPD4PA and tBu-TPD4PA, were reported. These materials exhibited efficient luminescent properties and deep blue emission peaks, with small energy gaps and high rates of reverse intersystem crossing. The corresponding TADF devices showed high external quantum efficiencies and emission characteristics that meet the requirements for blue color.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Shambhulinga Aralekallu, Lokesh Koodlur Sannegowda, Vijay Singh
Summary: The increasing global energy demand has led to rapid consumption of fossil fuel-based resources, resulting in depletion of fossil fuels and serious environmental impact from toxic gas emissions. To meet sustainable development goals, it is crucial to focus on and develop renewable energy sources. Among these, proton exchange membrane fuel cells, which use molecular hydrogen as a fuel, are of great importance due to their continuous energy supply, high energy density, and clean characteristics. However, the sluggish kinetics of the hydrogen evolution reaction at the cathode and the use of precious and less abundant platinum as a catalyst hinder the commercialization of these fuel cells. Phthalocyanine-based catalysts, particularly N-4 macrocycles, have shown potential in improving the reaction kinetics of the hydrogen evolution reaction. This review highlights the advantages of phthalocyanine-based catalysts and presents recent developments in their application for the hydrogen evolution reaction, discussing various experimental parameters and long-term stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Veeresh A. Shantharaja, Koodlur Sannegowda Giddaerappa, Veeresh A. Sajjan, Koodlur Sannegowda Lokesh
Summary: Renewable energy is crucial for sustainable development, and hydrogen is considered a clean and efficient energy source. Researchers are exploring bio-inspired macrocycles and polymers based on phthalocyanine to overcome the issues of overpotential, cost, and durability in the oxygen evolution reaction (OER) for water electrolysis. A novel cobalt phthalocyanine polymer was synthesized and found to be a low-cost and efficient organic catalyst for OER.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Giddaerappa, Keshavananda Prabhu Channabasavana Hundi Puttaningaiah, Shambhulinga Aralekallu, Shantharaja, Naseem Kousar, Ashwini Chikkabasur Kumbara, Lokesh Koodlur Sannegowda
Summary: One of the major challenges in the commercial production of hydrogen and oxygen from the electrochemical water splitting reaction is the lack of potential and low-cost electrocatalysts to enhance both half-cell reactions. A bifunctional hybrid composite catalyst comprising an organic N4 macrocycle and acid-functionalized multiwalled carbon nanotubes (MWCNTs) is fabricated and tested for water splitting reaction.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
Shantharaja, Giddaerappa, Lokesh Koodlur Sannegowda
Summary: Researchers have made significant progress in finding alternatives to the expensive Pt/C catalyst and improving the kinetics of the oxygen reduction reaction (ORR) in fuel cells. Organic macrocycles are being extensively studied as potential replacements for Pt/C due to their tunable properties. In this study, a novel metal-organic framework (CoII-TADPc) was successfully synthesized and characterized. The synthesized catalyst exhibited excellent ORR activity and stability, suggesting its potential to replace Pt/C for practical applications.
ELECTROCHIMICA ACTA
(2023)
Review
Chemistry, Multidisciplinary
C. P. Keshavananda Prabhu, Kenkera Rayappa Naveen, Jaehyun Hur
Summary: TADF materials are highly valued in OLEDs, and ADA-based TADF materials, known for their efficient charge transfer, have shown significant potential in high electroluminescent OLEDs. This comprehensive review provides insights into the molecular design, photophysical mechanisms, device architectures, and current challenges of ADA-based TADF materials.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Engineering, Environmental
Mirabbos Hojamberdiev, Ana Laura Larralde, Ronald Vargas, Lorean Madriz, Kunio Yubuta, Lokesh Koodlur Sannegowda, Ilona Sadok, Agnieszka Krzyszczak-Turczyn, Patryk Oleszczuk, Bozena Czech
Summary: In this study, the photocatalytic activity of bismuth tungstate (Bi2WO6) for the degradation of perfluoroalkyl substances (PFAS) was enhanced by partially substituting Zn2+ for Bi3+ in the crystal lattice. The partial substitution of Zn2+ influenced the crystal structure, optical properties, and morphology of the nanoparticles of Bi2WO6, resulting in enhanced photocatalytic activity. The photodegradation of PFAS was mainly attributed to the photo-excited holes and superoxide radicals generated during the process.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
