Article
Environmental Sciences
Monika Patel, Neha Bisht, Priyanka Prabhakar, Raj Kumar Sen, Pradip Kumar, Neeraj Dwivedi, Mohammad Ashiq, D. P. Mondal, Avanish Kumar Srivastava, Chetna Dhand
Summary: We developed an effective electrochemical sensor using a ternary nanocomposite of reduced graphene oxide functionalized with polydopamine and alanine for simultaneous detection of four heavy metal ions (Cd2+, Pb2+, Fe2+, and Cu2+). The sensor exhibited high sensitivity and low interference in detecting the targeted heavy metal ions in water and soil samples with detection limits and sensitivities provided.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Analytical
Mengjie Su, Haitian Lan, Liang Tian, Mengyuan Jiang, Xiaoqing Cao, Cailing Zhu, Chunmei Yu
Summary: A novel electrochemical sensor based on Ti3C2Tx-rGO nanocomposite was developed for the detection of serotonin in human biofluids. The sensor exhibited high sensitivity, excellent specificity, and good stability, making it suitable for the prevention and rapid diagnosis of serotonin-related diseases.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Guozhen Chen, Jianbin Zheng
Summary: In this study, a novel electrochemical nitrite sensor was developed using a GO-PANI-AuNPs nanocomposite, which exhibited excellent catalytic performance and selectivity for nitrite oxidation. The sensor was successfully applied to the detection of nitrite ions in tap water and sewage, offering a reliable electrochemical strategy for environmental monitoring applications.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Physical
S. Kiranmai, Charan Kuchi, Bathinapalta Sravani, Teresa Luczak, Myung Jong Kim, G. Madhavi, Y. Veera Manohara Reddy
Summary: A facile sensing platform using titanium dioxide-reduced graphene oxide nanofibers was developed for the accurate detection of epinephrine in biological fluids and pharmaceutical drugs.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Analytical
Hong Han, Chang Liu, Jingquan Sha, Yu Wang, Chunyao Dong, Mingjun Li, Tiying Jiao
Summary: The ternary nanocomposite of Fc-based carbon nanomaterials with PMo12 is identified as a promising electrochemical sensor for acetaminophen detection, showing low detection limit and wide range of detection capability.
Article
Food Science & Technology
Jamil A. Buledi, Nasrullah Mahar, Arfana Mallah, Amber R. Solangi, Ismail M. Palabiyik, Nadeem Qambrani, Fatemeh Karimi, Yasser Vasseghian, Hassan Karimi-Maleh
Summary: This study presents a method for electrochemical monitoring of mancozeb using WO3/rGO nanocomposite. The nanocomposite was characterized and found to have good crystallinity and nanometric size. By modifying a glassy carbon electrode, the detection of mancozeb was achieved, and acceptable recovery values were obtained in real vegetable samples.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Review
Biochemical Research Methods
Mandana Amiri, Khadijeh Nekoueian, Reyhaneh Sadat Saberi
Summary: Research on graphene-based carbon nanocomposites has significantly increased in recent years, with functionalized graphene structures like graphene oxide and reduced graphene oxide showing great potential in novel electrochemical sensors. Aptamers-based electrochemical sensors have gained attention for their high sensitivity, selectivity, simplicity, and low cost.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Jianzhi Huang, Zhixin Qiu, Jinhao Lin, Junlong Lin, Fuqing Zhu, Guohao Lai, Yanliang Li
Summary: In this study, a flower-like cobalt anchored on reduced graphene oxide (f-Co@rGO) nanocomposite was synthesized using a simple one-pot hydrothermal reduction method. The prepared f-Co@rGO/GCE electrochemical sensor achieved ultrasensitive quantitative determination of metronidazole at the nanomole per liter level, with a wide linear detection range of 0.025-500 nM and a low detection limit of 0.015 nM (S/N = 3), surpassing previous works. Moreover, the sensor was successfully used for accurate determination of metronidazole in real serum samples. The f-Co@rGO/GCE electrochemical sensor has great potential for clinical monitoring and drug quality control of metronidazole.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Hossein Khosropour, Behzad Rezaei, Hossein A. Alinajafi, Ali A. Ensafi
Summary: The PMF/GO nanocomposite was effectively employed for the ultrasensitive and selective electrochemical detection of oxycodone, offering a linear relationship with a detection limit of 2.0 nmol L-1. The sensor was successfully tested in human urine and serum samples for OXC detection.
Article
Chemistry, Multidisciplinary
Xue Jiang, Fangsheng Wu, Xiaoyu Huang, Shan He, Qiaoying Han, Zihua Zhang, Wenbin Liu
Summary: In order to address the shortcomings of detection methods for new psychoactive substances, researchers developed a graphene oxide modified by molecularly imprinted polymers (GO-MIPs). The GO-MIPs showed satisfactory selectivity and stability due to the specific imprinted cavities for 4-MEC. An electrochemical sensor was fabricated using the GO-MIPs, which exhibited high selectivity in detecting 4-MEC over a linear concentration range with a low detection limit. This provides an accurate, efficient, convenient, and sensitive method for public security departments to detect illicit drugs and new psychoactive substances.
Article
Chemistry, Applied
Qiaoyun Zhang, Weiwei Cheng, Di Wu, Yuling Yang, Xiao Feng, Chengcheng Gao, Linghan Meng, Xinchun Shen, Yan Zhang, Xiaozhi Tang
Summary: An electrochemical sensor was developed by modifying a nanoporous gold-coated glassy carbon electrode with functionalized graphene oxide/chitosan/ionic liquid nanocomposites. The sensor showed excellent analytical performance for detecting Amaranth, with high sensitivity and selectivity, reproducibility, and long-time stability. Practical application in detecting Amaranth in different drinks showed satisfactory results.
Article
Nanoscience & Nanotechnology
Thangavelu Sakthi Priya, Tse-Wei Chen, Shen-Ming Chen, Thangavelu Kokulnathan
Summary: A flexible electrode based on a bismuth molybdate/graphene nanocomposite was developed for electrochemical detection of mercury. The electrode exhibited high electrocatalytic performance and excellent sensing capabilities, allowing for accurate detection of mercury at low concentrations.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Naveenkumar P. Agadi, Ranjita Tandel, Jaldappagari Seetharamappa, Shankara Kalanur
Summary: The study demonstrates the fabrication of NiSe2-graphene oxide modified electrode for the determination of carbamazepine. The electrode showed good electrocatalytic properties and a linear relationship between the peak current and concentration of CBZ. The sensor has practical utility for determining CBZ in pharmaceutical formulations and urine samples.
Article
Chemistry, Multidisciplinary
Periyannan Kaleeswarran, Thangavelu Sakthi Priya, Tse-Wei Chen, Shen-Ming Chen, Thangavelu Kokulnathan, Ayyakannu Arumugam
Summary: This study demonstrates a facile sonochemical strategy for synthesizing a copper bismuthate/graphene nanocomposite-modified screen-printed carbon electrode for the electrochemical detection of catechol. The fabricated nanocomposite exhibits excellent electro-catalytic performance and good selectivity.
Article
Food Science & Technology
Jamil A. Buledi, Amber R. Solangi, Ali Hyder, Nadir H. Khand, Saba A. Memon, Arfana Mallah, Nasrullah Mahar, Elena Niculina Dragoi, Pau Show, Marzyeh Behzadpour, Hassan Karimi-Maleh
Summary: Recent studies have evaluated the widespread use of azo dyes as food colorants, highlighting the potential health risks associated with excessive consumption. To address the need for reliable quantification of the azo dye amaranth, researchers have developed a chemically modified sensor using SnO2/rGO nanocomposites. The sensor exhibited excellent electrocatalytic properties and showed promising results for the quantification of amaranth in soft drinks and water samples. The study also optimized various parameters for the determination process and demonstrated the sensor's anti-interference and stability profiles.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
N. Ramadoss, K. Pazhanivel, A. Ganeshkumar, M. Arivanandhan
Summary: This study focuses on improving the mechanical and corrosion properties of aluminium hybrid metal matrix composites (AHMMCs) by using boron carbide (B4C) and boron nitride (BN) as reinforcement particles. The AHMMCs with different weight percentages of B4C and fixed weight percentage of BN were synthesized using the stirring-squeeze cast method. The results show that the microstructure and chemical composition changes significantly improve the performance of the composites, making them potentially useful in automotive and marine applications.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Chemistry, Inorganic & Nuclear
N. R. Dhineshbabu, B. Raghavendra Babu, S. Arunmetha, M. Arivanandan, R. Jayavel
Summary: The modified Hummer's method was used to prepare reduced graphene oxide (RGO) nanostructures, which were found to have better thermal stability, wettabililty, and UV-screening properties when coated on cotton fabrics.
INORGANIC AND NANO-METAL CHEMISTRY
(2023)
Article
Environmental Sciences
T. Ruby Nirmala Mary, R. Jayavel
Summary: The introduction of Cashew Nut Shell Liquid (CNSL), iron oxide nanoparticles, Plant extracts from Mentha spicata L., Vitex negundo L., and Eucalyptus globulus M., in chitosan biopolymer matrix has created a significant contribution for the development of Bio-formulated polymer composites. The migration test performed for the formulated Bio-composites have satisfactory results with very less amount of residue get migrated that revealed a suitable material for packaging application. The developed bio-formulated polymer composites achieved an excellent biodegradation activity of about 80-93% through the acceleration of soil microbial flora. The SEM and EDAX analysis confirmed the surface degradability variation observed for 5 weeks. The present study is focused on the application of biodegraded soil for promoting the Eggplant growth (Solanum melongena L.) and its eco-efficacy evaluated by enhancing the development of an eco-characteristic active bio-nanomaterials which resulted a positive impact in packaging and agricultural sectors. [GRAPHICS].
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Materials Science, Multidisciplinary
Ankush Chauhan, Ritesh Verma, C. Gopal Krishnan, R. Jayavel, Khalid Mujasam Batoo, Sajjad Hussain, Rajesh Kumar, Pradeep Kumar
Summary: This paper reports the synthesis of lead-free K0.5GdxVy Na0.5-xNb1-yO3 ceramics via solid-state reaction. The study found that co-doping of Gd/V induced phase coexistence and phase formation. The KNN ceramics exhibited enhanced dielectric constant and relaxor behavior.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Environmental Sciences
D. Selvakumar, K. P. Sonu, G. Ramadoss, R. Sivaramakrishnan, R. Jayavel, M. Eswaramoorthy, K. Venkateswara Rao, A. Pugazhendhi
Summary: The n-type Ce doped ZnO (Ce-ZnO) and p-type polyaniline (PANI) heterojunction were successfully synthesized for sensing liquefied petroleum gas (LPG) at standard environment. The Ce-ZnO & PANI nanoparticles were mixed with NMP and coated on a gold coated PET electrode to form a p-n junction. The Ce-ZnO nanoparticles showed improved chemisorbed oxygen and oxygen vacancy after the formation of Ce-ZnO heterojunction. The hollow Ce-ZnO/PANI sensor achieved a maximum response of 80% at 100 ppm LPG concentration.
Article
Biochemistry & Molecular Biology
M. Ramesh, C. Sankar, S. Umamatheswari, J. Balamurugan, R. Jayavel, M. Gowran
Summary: Pure ZnZrO2 and chitosan supported (ZnZrO2/CS) nanocomposite were synthesized via hydrothermal method. The structural and morphological properties of the fabricated nanocomposites were analyzed using various characterization techniques. The ZnZrO2/CS sensor showed wide detection range, high sensitivity, low LOD, and long-term stability for glucose detection in alkaline solution. It also exhibited excellent sensing ability towards hydrogen peroxide with wide dynamic range, high sensitivity, and low LOD. The modified electrode showed excellent anti-interference nature and was successfully used for glucose and H2O2 detection in human blood serum and HeLa cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Ashwin Karthick Natarajan, Joonas Ryssy, Anton Kuzyk
Summary: The DNA origami technique allows precise positioning of nanoscale objects, facilitating the development of functional nanomechanical devices for investigating DNA-protein interactions. In this study, a nanoscale device was fabricated using the DNA origami technique to study DNA bending proteins. The bending of DNA caused by the TATA-box binding protein (TBP) was observed using a transmission electron microscope, and the roles of transcription factor II A (TF(II)A) and transcription factor II B (TF(II)B) were investigated.
Article
Chemistry, Inorganic & Nuclear
R. Rajkumar, J. Mani, A. S. Alagar Nedunchezhian, D. Sidharth, S. Radha, M. Arivanandhan, R. Jayavel, G. Anbalagan
Summary: Cu(2-)x SbxTe (0 <= X >= 0.2) samples were prepared using the ball milling method. XRD analysis confirmed the presence of Cu2Te phase in pristine and Cu1.95Sb0.05Te samples, while a secondary phase of Sb2Te3 was observed in other samples along with Cu2Te. SEM and TEM analysis revealed the spherical morphology of the samples. Resistivity (p) of Cu-2-xSbxTe decreased with increasing Sb content up to 0.1 and slightly increased for the sample with X = 0.2. The Seebeck coefficient (S) of Cu-2-xSbxTe decreased with increasing Sb content up to 0.1 and then increased for samples with x = 0.2. Cu1.8Sb0.2Te exhibited a high power factor (682 mu W K(-2)m(-1) @ 623 K), resulting in high S and low p values. The achieved zT value of 0.248 for Cu1.8Sb0.2Te at 623 K was relatively higher than reported values for similar materials.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
N. Sivakumar, P. Vijayakumar, R. Jayavel, Ali Alsalme, Abdullah S. Alsulami, Yuui Yokota
Summary: The pure and strontium substituted LaFeO3 samples were synthesized and characterized with good quality single crystals grown for dielectric and magnetic measurements. The orthorhombic structure and composition of the samples were confirmed by X-ray diffraction and energy dispersive X-ray spectroscopy analysis. The dielectric constant increased in the Sr substituted LaFeO3 crystal and magnetic properties were tested with M-H loop.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Composites
R. Sasikumar, R. Jayavel
Summary: Amine-Multi-walled Carbon Nanotubes (MWCNTs) were spray deposited on fiber fabric to enhance the mechanical and thermal properties of CF/PC composites. The presence of MWCNTs significantly improved tensile strength, modulus, flexural strength, and flexural modulus. However, the impact strength increased only at a higher concentration of MWCNTs. The inclusion of MWCNTs also lowered the glass transition temperature of the composites. Analysis techniques such as XPS, FTIR, and FESEM were used to study the functional groups, dispersion, and adhesion of MWCNTs on the fiber surface.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Chemistry, Analytical
Manoharan Arun Kumar, Ramasamy Jayavel, Shanmugam Mahalingam, Junghwan Kim, Raji Atchudan
Summary: Universal platforms utilizing sensor devices to analyze biomolecules can effectively address diagnostic challenges. Graphene-based field-effect transistors, such as the Graphene Field-Effect Transistor (GFET) devices, are capable of sensing DNA hybridization, pH levels, and protein molecules, making them ideal for biomarker detection.
Article
Chemistry, Multidisciplinary
Kamal Batcha Mohamed Ismail, Manoharan Arun Kumar, Ramasamy Jayavel, Mukannan Arivanandhan, Mohamed Abubakkar Mohamed Ismail
Summary: In this study, pure MoS2 and MoS2/Bi2S3 nanocomposites with different bismuth compositions were synthesized by the hydrothermal method. XRD analysis confirmed the formation of MoS2 and the secondary phase of Bi2S3. SEM, TEM, and HRTEM observations revealed the 3D layered hierarchical structure of MoS2 nanospheres and the nanosheet-like structure of Bi2S3. The electrochemical properties study demonstrated that the MoS2/Bi2S3 composites exhibited improved electrochemical performance and higher specific capacitances compared to pure MoS2, with the 20 mol% Bi added sample showing the maximum specific capacitance of 371 F g(-1) at a current density of 1 A g(-1).
Article
Chemistry, Multidisciplinary
Johannes M. Parikka, Heini Jarvinen, Karolina Sokolowska, Visa Ruokolainen, Nemanja Markesevic, Ashwin K. Natarajan, Maija Vihinen-Ranta, Anton Kuzyk, Kosti Tapio, J. Jussi Toppari
Summary: Bottom-up methods using molecules like DNA have gained attention for the fabrication of complex nanostructures due to their low cost, high resolution, and simplicity in the third dimension. In this study, plus-shaped Seeman tile (ST) origami formed elongated 2D lattices and rolled into 3D tubes under specific ionic conditions. Imaging and further studies revealed ribbon-like structures with single or double layers of the origami lattice. The assembly process of these 3D DNA origami tubes was found to be heavily dependent on the concentration of mono- and divalent cations, with nickel acting as a trigger for tubular formation in solution.
Article
Materials Science, Multidisciplinary
Suguna Subramanian, Sasikala Ganapathy, Sangeetha Dharmalingam, Ramasamy Jayavel
Summary: The graphene oxide nanosheets (GO NSs) and nickel titanate nanofibres (NiTiO3 NFs) were synthesized using modified Hummers and electrospinning techniques. Different weight percentages of GO NSs were decorated on the surface of NiTiO3 NFs through sonication. Scanning electron microscopy and high-resolution transmission electron microscopy confirmed the decoration of GO NSs on the surface of NiTiO3 NFs. The inclusion of GO improved the absorption capability of NFs and effectively hindered the recombination of photoexcited charge carriers, as revealed by photoelectrochemical studies. Photocatalytic activity was observed with the degradation of methylene blue (MB) dye solution. The GO NSs-decorated NiTiO3 NF composite showed significantly improved photocatalytic activity compared to pure NiTiO3 NFs.
BULLETIN OF MATERIALS SCIENCE
(2023)
