Article
Chemistry, Analytical
Reza Akhbari Varkani, Hossain-Ali Rafiee-Pour, Mohammad Noormohammadi
Summary: Redox enzymes as biocatalysts have gained increasing attention for developing electronic biomaterials and devices in various applications. In this study, titanium dioxide nanotubes (TNT) were successfully synthesized and used as immobilization substrate for glucose oxidase (GOx), resulting in excellent performance with low detection limit, wide linear range, high stability, and good reproducibility. This promising strategy of integrating enzymes with TNT demonstrates the potential for bioelectrochemical applications.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Paper & Wood
Bingxin Zhao, Mingxue Yuan, Lianzhu Wang, Zhemin Liu, Xiaodan Fu, Hina Mukhtar, Changliang Zhu, Han Sun, Min Yao, Haijin Mou
Summary: Bacterial cellulose (BC) with L-arginine Schiff base was prepared and tested for its antibacterial activity. The cellulose composites showed excellent antibacterial potential against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa, making them promising candidates for biomedical applications.
Article
Energy & Fuels
Dharmendra Kumar Yadav, Fatin Saiha Omar, Mamta Yadav, Xian Liang Ho, Malcolm E. Tessensohn, K. Ramesh, S. Ramesh, Richard D. Webster, Vellaichamy Ganesan
Summary: In the field of renewable energy research, MWCNTs-ZrO2-Co3O4 has been successfully employed as a catalyst and supercapacitor material, demonstrating efficient and stable performance.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Richard G. Compton, Yuanyuan Lu, Xiuting Li
Summary: The electrocatalytic properties of multiwalled carbon nanotubes (MWCNTs) on the oxygen reduction reaction (ORR) in aqueous base have been studied at the single entity level. It has been shown that the electroactive surface functionality facilitates significant electrocatalysis, resulting in the formation of peroxide at lower potentials compared to bare carbon macroelectrodes and carbon nanotube modified electrodes.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Biochemistry & Molecular Biology
D. V. Estrada-Osorio, Ricardo A. Escalona-Villalpando, L. G. Arriaga, A. Gutierrez, J. Ledesma-Garcia
Summary: Ferrocene-based polymers have been widely studied as redox mediators in glucose biosensors. This work successfully modified poly-L-lysine (PLL) with ferrocene carboxylate and tested its performance as a redox mediator with glucose oxidase. The results showed remarkable activity and high selectivity. Scanning electrochemical microscopy was used to analyze the charged regions of the modified polymer on the electrode surface.
BIOELECTROCHEMISTRY
(2022)
Article
Chemistry, Analytical
A. Okhokhonin, V. Stepanova, N. Malysheva, A. Matern, A. Kozitsina
Summary: This paper presents a new enzymeless electrochemical glucose sensor using cMWCNT and NiL as electrocatalyst, with excellent stability and selectivity, demonstrating outstanding electrocatalytic activity towards glucose oxidation.
Article
Chemistry, Physical
Yuanyuan Lu, Xiuting Li, Archana Kaliyaraj Selva Kumar, Richard G. Compton
Summary: Single-entity electrochemistry measurements were used to compare the electrocatalysis of the oxygen reduction reaction (ORR) by multiwalled carbon nanotubes (MWCNTs) or amino-functionalized multiwalled carbon nanotubes (MWCNTs-NH2). The evidence showed that the electroactive surface oxygen functionality played the most important role in the catalysis process, not the nitrogen content.
Article
Chemistry, Multidisciplinary
Nataliya Stasyuk, Galina Gayda, Olha Demkiv, Lyubomyr Darmohray, Mykhailo Gonchar, Marina Nisnevitch
Summary: Limited data exist on amperometric biosensors for L-arginine determination based on oxidases producing H2O2 and artificial peroxidases. This study proposed three types of ABS for direct measurement of Arg, showing high sensitivity, selectivity, and good storage stability. The ABSs demonstrated high correlation and accuracy when tested on real samples, indicating their potential for Arg analysis in various fields.
APPLIED SCIENCES-BASEL
(2021)
Article
Biochemistry & Molecular Biology
Yoshika Yano, Shinsaku Matsuo, Nanako Ito, Takashi Tamura, Hitoshi Kusakabe, Kenji Inagaki, Katsumi Imada
Summary: The study demonstrates that the R305E mutant variant of LGOX exhibits strict specificity for l-arginine and has higher oxidative deamination activity compared to l-arginine oxidase form from Pseudomonas sp. TPU 7192. The enzyme is thermostable, pH stable, and produces a proportional amount of hydrogen peroxide to the concentration of l-arginine in the range of 0 to 100 μM, with a linear relationship around 1 μM of l-arginine, making it suitable for accurate determination of l-arginine content.
Article
Chemistry, Multidisciplinary
Afridi Zamader, Bertrand Reuillard, Jacques Pecaut, Laurent Billon, Antoine Bousquet, Gustav Berggren, Vincent Artero
Summary: Surface integration of molecular catalysts inspired by hydrogenase enzymes' active sites offers a promising approach for developing noble metal-free and sustainable H2 production technologies. In this study, a diironhexacarbonyl complex with two pyrene groups per catalytic unit was prepared and electrochemically characterized, allowing for its smooth integration onto multiwalled carbon nanotube-based electrodes through pi-interactions. The grafted catalyst achieved turnover numbers for H2 production of up to 4 +/- 2x10(3) within 20 hours of bulk electrolysis at neutral pH.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Shoichi Nishitani, Tiffany Tran, Andrew Puglise, Sounghyun Yang, Markita P. Landry
Summary: This study presents the development of near-infrared fluorescent single-walled carbon nanotube (SWCNT) based nanosensors for glucose imaging. The authors find that the fluorescence modulation of GOx-SWCNT is not associated with the enzymatic activity but rather triggered by the substrate-enzyme binding. Leveraging this unique mechanism, the authors developed catalytically inactive nanosensors that enable glucose imaging in mouse brain slices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Md Humayun Kabir, Erik Marquez, Grace Djokoto, Maurice Parker, Talia Weinstein, William Ghann, Jamal Uddin, Meser M. Ali, Maksudul M. Alam, Max Thompson, Altug S. Poyraz, Huggins Z. Msimanga, Mohammed M. Rahman, Michael Rulison, John Cramer
Summary: This report describes and characterizes an enzymatic biofuel cell that is simple, mediator-free, and glucose-powered. It utilizes biocompatible materials and features a two-dimensional mesoporous thermally reduced graphene oxide (rGO) host electrode. The use of biocompatible, low-cost filter paper (FP) as a support material for the host electrode is also explored. The cell shows high power density and stable power output under ambient conditions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Leema Rose Viannie, N. R. Banapurmath, Manzoore Elahi M. Soudagar, Anilkumar Nandi, Nazia Hossain, Ashwini Shellikeri, Vinita Kaulgud, Ma Mujtaba, Sher Afghan Khan, Mohammad Asif
Summary: In this study, highly flexible polymer nanocomposite sheets were successfully developed using MWCNT in a PDMS matrix via solution processing technique, showing superior electrical conductivity and stability. An optimal filler concentration of 5.58 wt% exhibited high stiffness, tensile strength, and elongation, making it suitable for fabricating flexible strain sensors.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Sundara Ramaprabhu, T. K. Sana Fathima
Summary: This study systematically investigates the origin of the electrocatalytic nature of multiwalled carbon nanotubes towards the oxidation of Vitamin D3, and finds that oxygen functional groups play a vital role in this reaction. The analytical parameters for Vitamin D3 sensing using MWCNT modified electrodes are also presented.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Yu Cai, Tingting Tu, Tianyu Li, Shanshan Zhang, Bin Zhang, Lu Fang, Xuesong Ye, Bo Liang
Summary: The study on the application of nanomaterials in glucose biosensors demonstrates excellent electrochemical performance, taking a step towards the development of the third-generation glucose biosensor.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Kugalur Shanmugam Ranjith, A. T. Ezhil Vilian, Seyed Majid Ghoreishian, Reddicherla Umapathi, Seung-Kyu Hwang, Cheol Woo Oh, Yun Suk Huh, Young-Kyu Han
Summary: By fabricating the hybridized MnMoO4-MXene nanocomposite, the sensor effectively detected hydroquinone and catechol in wastewater with a wide linear response range and low detection limit.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Naveen Karuppusamy, Vinitha Mariyappan, Shen-Ming Chen, Rasu Ramachandran
Summary: In this study, a CaWO4/RGO nanocomposite was prepared by a hydrothermal method, and it exhibited excellent electrocatalytic performance for the detection of enrofloxacin. The sensor showed a low limit of detection, a wide linear range, good selectivity, stability, and reproducibility.
Article
Chemistry, Analytical
A. T. Ezhil Vilian, Seung-Kyu Hwang, Min Ji Lee, Yun Suk Huh, Young-Kyu Han
Summary: This study demonstrates that Mn-doped ZnS-GCE has excellent electrocatalytic sensing ability for ultralow-level determination of carbendazim (CBZ) in food products. The Mn-doped ZnS-GCE exhibits a larger linear working range and a lower detection limit for CBZ, and can be used for the precise identification of spiked CBZ in lemon wash water samples, tomato sauce, and orange juice samples.
MICROCHEMICAL JOURNAL
(2022)
Article
Engineering, Environmental
A. T. Ezhil Vilian, Seung-Kyu Hwang, Gokul Bhaskaran, Munirah Alhammadi, Suheon Kim, Jitendra N. Tiwari, Yun Suk Huh, Young-Kyu Han
Summary: The high usage of nitrofurantoin (NFT) has resulted in unacceptable levels of NFT in water and foods, which has negative impacts on animals, humans, and surrounding ecosystems. To tackle this issue, a gold nanoparticle (AuNP) modified polypyrrole (PPy) on Titanium carbide MXene (Ti3C2Tx) composite was developed as an ultrasensitive electrochemical sensor for the direct and on-site detection of NFT in complex samples.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Balamurugan Karupppaiah, Anupriya Jeyaraman, Shen -Ming Chen, Yu-Ching Huang
Summary: The construction of highly sensitive electrochemical sensors is crucial for detecting pharmaceutical drugs due to their significant pollution in aqueous systems. In this study, we developed a highly sensitive electrochemical sensor for ronidazole (RNZ), a veterinary antibiotic drug. The electrode was fabricated using cobalt oxide nanorods integrated with hexagonal boron nitride-modified glassy carbon electrode (CoCo2O4 NRs/h-BN/GCE). The electrocatalytic activity of CoCo2O4 NRs/h-BN/GCE was analyzed, and it showed the highest sensitivity for RNZ detection with a low limit of detection (3 nM) and high sensitivity (5.845 mu A mu M-1 cm-2).
ELECTROCHIMICA ACTA
(2023)
Review
Chemistry, Analytical
Krishan Kumar, Eunsu Kim, Munirah Alhammadi, Umapathi Reddicherla, Sheik Aliya, Jitendra N. Tiwari, Hyun Sung Park, Jung Hyun Choi, Chae Yeon Son, A. T. Ezhil Vilian, Young-Kyu Han, Jiyoon Bu, Yun Suk Huh
Summary: This paper provides a comprehensive overview of microfluidic devices used to isolate, detect, and analyze exosomes from body fluids, with an emphasis on their designs and working principles from an analytical perspective. Recent progress in the design of microfluidic-based exosome isolation devices is outlined. Challenges and potentials in the clinical translation of these devices are highlighted, and guidelines are offered to engineers and clinicians interested in this field.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Venkatachalam Vinothkumar, Rajalakshmi Sakthivel, Shen-Ming Chen, Arumugam Sangili, Tae Hyun Kim
Summary: In this study, a Sr@Mn3O4 anchored graphene oxide (GO) electrocatalyst was developed for the detection of nitrofurantoin (NFT). The synergistic activity of Sr@Mn3O4 with GO enhances the specificity and sensitivity of NFT detection. The fabricated Sr@Mn3O4/GO-modified electrode shows a wide dynamic linear range, low limit of detection, and good sensitivity for NFT.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Electrochemistry
Tse-Wei Chen, Rasu Ramachandran, Pitchaimani Veerakumar, Shen-Ming Chen, Vishnu Priya Veeraraghavan, Vinitha Mariyappan, Ramanujam Kannan, Paulsamy Raja
Summary: Heterogeneous based functionalized nanocomposite materials have attracted significant attention in energy storage and conversion due to their fast electron transfer process and long life cycles. This review briefly discusses various techniques used for fabricating carbon based nanocomposites, such as sol-gel, hydrothermal, in situ polymerization, and electrochemical methods. Functionalized carbon decorated nanocomposites have become the focus of future energy technologies, especially for their larger electrode surface area, high mechanical strength, excellent electrochemical properties, and rapid electrochemical redox behavior. The advancements in nanoscale based composite devices provide a platform for developing new energy storage technology to meet global energy demands. Finally, the review summarizes the recent advantages of carbon supported composites, which significantly enhance their electrochemical energy storage device properties, including high capacitance and boosted specific capacitive values.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
A. T. Ezhil Vilian, Jitendra N. Tiwari, Munirah Alhammadi, Gokul Bhaskaran, Seung-Kyu Hwang, Suheon Kim, Krishan Kumar, Annamalai Senthil Kumar, Yun Suk Huh, Young-Kyu Han
Summary: A new method was developed to rapidly detect BPA contamination in aquatic environmental samples. Screen-printed carbon electrodes were coated with Pd nanoparticles anchored on a MoS2-modified MXene nanoarchitecture for accurate sensing of BPA. The optimized electrode showed excellent electrocatalytic activity and high current density at the lowest anodic potential, and exhibited good selectivity and stability for the quantification of BPA in milk and river and lake water samples.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
A. T. Ezhil Vilian, Ali Mohammadi, Soobin Han, Jitendra N. Tiwari, Krishan Kumar, Annamalai Senthil Kumar, Adhimoorthy Saravanan, Yun Suk Huh, Young-Kyu Han
Summary: This research developed a sensor based on AuNC-MoSe2-PC coated GCEs for the detection of CPS. The sensor showed wide linear range, rapid response, and ultra-high sensitivity for CPS, as well as excellent reproducibility, repeatability, reusability, and long-time stability. It also demonstrated remarkable tolerance for the detection of CPS in the presence of potentially interfering substances.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Saranvignesh Alagarsamy, Ruspika Sundaresan, Tse-Wei Chen, Shen-Ming Chen, Bih-Show Lou, Balaji Ramachandran, Sayee Kannan Ramaraj, M. Ajmal Ali, Mohamed S. Elshikh, Jaysan Yu
Summary: Research in rare-earth metal molybdates, especially gadolinium molybdate (GdM), has gained interest due to their unique properties. In this study, GdM was synthesized using reduced graphene oxide (RGO). The GdM/RGO nanocomposite was then used for the electrochemical detection of metol (ML), showing excellent electrical properties. The GdM/RGO sensor exhibited a low detection limit and a wide linear range for ML determination.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Physical
Jitendra N. Tiwari, Muhammad Umer, Gokul Bhaskaran, Sohaib Umer, Geunsik Lee, Min Gyu Kim, Han-Koo Lee, Krishan Kumar, A. T. Ezhil Vilian, Yun Suk Huh, Young-Kyu Han
Summary: Progress in acidic water splitting has been limited by low oxygen evolution reaction (OER) activities, slow reaction kinetics, and catalyst degradation. In this study, t-phase ruthenium oxide atomic layers implanted on Mo2TiC2Tx MXene (RAL-M) were used as a model electrocatalyst for OER in acidic media, exhibiting remarkable mass activity and durability. Computational calculations reveal that RAL-M has strong affinity to oxygen species, enabling efficient water dissociation and accelerating the OER.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Shaktivel Manavalan, Pitchaimani Veerakumar, Shen-Ming Chen, Naveen Karuppusamy
Summary: In this study, a high-performance multifunctional catalyst, CrNiCo-P/GCN, was designed and demonstrated favorable electrochemical properties and electrical conductance for the oxygen evolution reaction. This catalyst also showed high sensitivity and a wide concentration range for the electrochemical determination of ROX, and exhibited excellent photodegradation of ROX under visible light irradiation.
Review
Chemistry, Multidisciplinary
Rasu Ramachandran, Tse-Wei Chen, Pitchaimani Veerakumar, Ganesan Anushya, Shen-Ming Chen, Ramanjam Kannan, Vinitha Mariyappan, Selvam Chitra, Nagappan Ponmurugaraj, Muthusamy Boominathan
Summary: Water electrolysis is a promising method for producing hydrogen, which can meet the global energy demand. Hydrogen-based fuel cell transportation has zero greenhouse emissions and improves air quality, while also providing economically viable green energy for electrochemical applications. Many countries are focusing on the development of renewable and hydrogen-based energy storage infrastructure to meet their growing energy demands and sustainable goals.
Article
Chemistry, Multidisciplinary
Nandini Nataraj, Shen-Ming Chen, Siva Kumar Krishnan
Summary: This study presents a simple approach to preparing a nanocomposite, SrV/GCN, and explores its application for the simultaneous electrochemical detection of antibiotic drugs ACAMP and LEV. The SrV/GCN/GCE sensor exhibits high sensitivity, wide linear range, and low detection limit for ACAMP and LEV, as well as exceptional selectivity and operational stability. The practical use of the sensor is validated in real samples, showing promising opportunities for practical clinical analysis.
ENVIRONMENTAL SCIENCE-NANO
(2022)