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, 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
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)
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
Nanoscience & Nanotechnology
Jingjing Yuan, Ling Jiang, Jianfei Che, Guangyu He, Haiqun Chen
Summary: A multicomponent NiS2/MoS2/rGO electrode nanomaterial has been synthesized, showing good capacitance and sensitivity for potential applications in electrochemical energy storage and sensors. The material combines NiS2, MoS2, and rGO to provide promising performance in detecting bisphenol A and storing energy efficiently.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Varsha Gautam, Avshish Kumar, Suman Nagpal, V. K. Jain
Summary: The study developed an ultrasensitive ZnO/SiNWs nanocomposite sensor for precise detection of harmful formaldehyde. Characterization studies showed high response and accurate detection limit of the sensor, as well as stability and fast response time. The findings suggest that the sensor can reliably and accurately identify infections at an early stage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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
Engineering, Environmental
Damini Verma, Amit K. Yadav, Maumita Das Mukherjee, Pratima R. Solanki
Summary: A highly efficient electrochemical BPA sensor utilizing reduced graphene oxide and molybdenum trioxide nanoparticles nanocomposite has been developed, providing excellent sensitivity and accuracy for BPA detection. The in situ synthesis of MoO(3)Nps onto the surface of rGO sheets through one-pot hydrothermal synthesis has created a superior platform for BPA detection, promising potential application in detecting other estrogenic substrates in the future.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Inorganic & Nuclear
Chuanqin Zhou, Shuting Shi, Yanping Wei, Aiting Chen, Nana Tang, Jingsong Zuo, Quanguo He, Peihong Deng
Summary: In this study, hollow tubular manganese-cobalt sulfide (MnS/Co3S4) hybrids were synthesized and anchored on graphene oxide (GO) using a hydrothermal method and ultrasonic dispersion. The resulting nanocomposites were drop-coated onto a glassy carbon electrode (GCE) to construct a sensitive sensor for acetaminophen (AC) detection. The electrochemical performance of the MnS/Co3S4-ERGO/GCE was evaluated, showing excellent electrocatalytic activity for AC oxidation. The method demonstrated high accuracy for AC determination in commercial tablets and human serum samples, with satisfactory recoveries.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
B. R. Sivasankaran, M. Balaji
Summary: Gallium oxide (Ga2O3) nanoparticles were prepared through ultrasonic irradiation and calcination, while Ga2O3/rGO nanocomposites were synthesized by hydrothermal method. The nanocomposites exhibited excellent ammonia sensing response at room temperature.
Article
Biotechnology & Applied Microbiology
Ahmad Umar, Ahmed A. Ibrahim, Hassan Algadi, Hasan Albargi, Mabkhoot A. Alsairi, Yao Wang, Sheikh Akbar
Summary: Herein, a room-temperature NO2 gas sensor based on supramolecularly assembled isonicotinamide-graphene oxide nanocomposite (Iso-rGO) and Iso-rGO/Carbon felt (CF) electrode was prepared and studied. The sensor showed excellent reductive behavior of NO2 gas at room temperature, with a linear range of 1-30 ppm and a low detection limit of 1 ppm. The Iso-rGO/CF electrode exhibited high sensitivity and good stability for more than 30 days, making it suitable for the sensitive detection of gaseous NO2 in real samples.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Analytical
Smita R. Bhardiya, Ambika Asati, Harendra Sheshma, Ankita Rai, Vijai K. Rai, Manorama Singh
Summary: An ecofriendly SnO2 nanoparticles@bioconjugated reduced graphene oxide nanocomposite was constructed for selective and sensitive detection of cadmium (II) in water samples. The synergistic effect of SnO2 and bioconjugated reduced graphene oxide significantly enhanced the electrocatalytic efficiency of the electrode, resulting in a linear quantification range of 0.001-0.4 ppm with a detection limit of 1 x 10(-4) ppm and sensitivity of 67.43 mu A/ppm. Real sample analysis using tap water and ground water samples showed excellent recovery results.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Food Science & Technology
Haotian Yu, Wei Guo, Xin Lu, Hui Xu, Qian Yang, Jianxin Tan, Wei Zhang
Summary: This review tracks the development of reduced graphene oxide (rGO) nanocomposite materials electrochemical biosensors for the detection of foodborne pathogenic bacteria, discussing the preparation of rGO nanocomposite electrochemical biosensors and their working mechanism.
Article
Chemistry, Multidisciplinary
Behzad Mirzaei, Ali Zarrabi, Abdollah Noorbakhsh, Abbas Amini, Pooyan Makvandi
Summary: Curcumin is a polyphenolic compound with anti-oxidative and anti-cancer properties, which is crucial in cancer therapy. An electrochemical sensor based on beta-cyclodextrin-reduced graphene oxide nanocomposite was fabricated for measuring curcumin concentration, showing good electrochemical properties and sensitivity. The sensor exhibited selectivity in detecting curcumin in the presence of other electroactive species, with a linear response over a specific range and a low detection limit.
Article
Chemistry, Physical
P. Tamizhdurai, R. Mythily, C. Kavitha, V. L. Mangesh, R. Kumaran, P. Santhana Krishnan, T. Sivaramakrishnan, T. Augustine, Mani Govindasamy, Asma A. Alothman, Mohemed Ouladsmane
Summary: The Pt-containing commercial mordenite catalyst with different Si/Al molar ratios (SAR) = 32, 40, and 50 was synthesized and applied in the epoxidation reaction of cyclohexene. The samples were analyzed using various physicochemical techniques to determine their phases, textural properties, functional groups, morphology, stability, and microstructural details. The Pt/mordenite (40%) catalyst showed the highest conversion and selectivity in the cyclohexene epoxidation reaction compared to other catalysts. It also exhibited reasonably acceptable conversion efficiency after six cycles, making it suitable for industrial production applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Sathishkumar Chinnapaiyan, Himadri Tanaya Das, Shen-Ming Chen, Mani Govindasamy, Razan A. Alshgari, Chi-Hsuan Fan, Chi-Hsien Huang
Summary: In this study, the electrochemical performance of bimetallic oxide CoAl2O4 was improved by decorating it on carbon nanofibers (CNFs) as battery-type electrodes. The CoAl2O4/CNFs nanocomposites exhibited high charge storage capacity, long-term stability, and were used to develop an enzyme-free electrochemical sensor for the detection of luteolin (LUT).
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biophysics
Sian-Hong Ciou, Ao-Ho Hsieh, Yu-Xiu Lin, Jhao-Liang Sei, Mani Govindasamy, Chang-Fu Kuo, Chi-Hsien Huang
Summary: Alzheimer's disease (AD) can be diagnosed using advanced imaging, but recent research suggests early screening using biomarkers in peripheral blood is feasible. Plasma tau proteins phosphorylated at specific sites, such as p-tau217, show promising potential as biomarkers. However, a biosensor with high sensitivity and specificity for detecting p-tau217 has not been reported. In this study, a label-free solution-gated field effect transistor (SGFET)-based biosensor was developed, which showed good linear electrical response to p-tau217 protein concentrations in the range of 10 fg/ml to 100 pg/ml. The biosensor exhibited high sensitivity and specificity, as well as stability.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Subramaniyan Vinoth, Sea-Fue Wang
Summary: The BaTiO3/PVDF nanocomposite prepared by cold sintering process showed good sintering density and microwave dielectric properties at low temperature, making it a promising candidate for microwave dielectric applications.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
C. Ragupathi, V. T. Geetha, S. Narayanan, P. Tamizhdurai, G. Ramalingam, V. L. Mangesh, R. Kumaran, Amer M. Alanazi, Aboud Ahmed Awadh Bahajjaj, Mani Govindasamy
Summary: We conducted a comprehensive study on optimization of microwave method routes for producing well-crystalline spinel chromite, NiCr2O4, and Ce-doped NiCr2O4. The characterization of the samples was done using powder X-ray diffraction (XRD) and vibrational spectroscopy to evaluate their phase composition, particle size, and micro-strain. Selected samples were further examined using transmission electron microscopy (TEM) and optical spectra to study their structural and optical properties. The results showed that Ce ion substitution enhanced the magnetic, optical, and antibacterial properties of nickel chromite particles.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Correction
Chemistry, Analytical
Velusamy Arul, Natarajan Sampathkumar, Sindhuja Kotteeswaran, Ponnusamy Arul, Ahmed Muteb Aljuwayid, Mohamed A. Habila, Mani Govindasamy
Article
Chemistry, Analytical
Velusamy Arul, Natarajan Sampathkumar, Sindhuja Kotteeswaran, Ponnusamy Arul, Ahmed Muteb Aljuwayid, Mohamed A. Habila, Mani Govindasamy
Summary: Binder-free and efficient electrochemical sensing of levofloxacin was achieved using nitrogen-doped carbon nanodots (NCNDs) synthesized via hydrothermal carbonation. The NCNDs showed uniform spherical morphology (2.96 nm diameter) and high quantum yield efficiency (0.42 Phi). The NCNDs-modified electrode exhibited enhanced current response, lower detection potential, and improved electron transfer reaction. The optimized NCNDs/GCE sensor showed a wide linear range (200 nM to 2.8 mM) and low detection limit (48.26 nM) with excellent stability and reproducibility. The NCNDs-modified GC electrode was successfully applied to quantify the concentration of LF in drug and river water samples with satisfactory recovery percentages (96.60-99.20% and 97.20-99.00%, respectively).
Article
Engineering, Environmental
Elayappan Tamilalagan, Muthumariappan Akilarasan, Shen -Ming Chen, Mani Govindasamy, Kuan-Yu Lin, Fatimah Mohammed Alzahrani, Norah Salem Alsaiari
Summary: 4-hydroxy-3-nitrophenylarsonic acid (HNPA), also known as roxarsone, is widely used as a feed additive in poultry industries. However, it can degrade into toxic inorganic arsenic, posing risks to human health and the environment. In this study, a nanocomposite sensor based on perovskite-structured ZnSnO3@GO was developed for the electrochemical analysis of HNPA, showing high sensitivity and accuracy.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Multidisciplinary
Sangeetha Murugan Sreedevi, Seba Merin Vinod, Anju Krishnan, Tamizhdurai Perumal, Fatmah Ali Alasmary, Norah Salem Alsaiari, Mani Govindasamy, Kumaran Rajendran
Summary: Molecular docking studies were conducted to investigate the binding stability and feasibility of resorcinol-based acridinedione dyes (ADR1 and ADR2) with a globular protein, Human Serum Albumin (HSA). The results showed that ADR2 dye had a more stable and feasible binding with HSA compared to ADR1 dye. ADR1 dye predominantly bound to site I and III of HSA and acted as a hydrogen bonding acceptor, while ADR2 dye bound to all binding sites and acted as a hydrogen bonding donor. The importance of drug-governance on the binding affinity of dye-protein complex was also studied. Site I binding drugs decreased the binding affinity of ADR1 dye-HSA complex, while site II binding drugs predominantly decreased the affinity of ADR2 dye-HSA complex. The study highlights the utility of molecular docking in understanding the stability and binding of host-guest complexes. Rating: 8 out of 10.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
P. Tamizhdurai, V. L. Mangesh, P. Santhan Krishnan, C. Kavitha, A. Vijay, R. Kumaran, Mani Govindasamy, Asma A. Alothman, Mohamed Ouladsmane
Summary: This study successfully generated crystalline CeO2 nanoparticles and evaluated their structure and morphology using various spectroscopic and analytical methods. CeO2 nanoparticles showed good catalytic activity in the epoxidation reaction of cyclohexene. Moreover, CeO2 nanoparticle electrodes exhibited advantages such as a linear concentration range, low detection limit, and high sensitivity for nitrite detection.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Kumar Manimaran, Dede Heri Yuli Yanto, Mani Govindasamy, Bogeshwaran Karunanithi, Fatmah Ali Alasmary, Reem Abdulrahman Habab
Summary: This study demonstrates the green synthesis of nanoparticles using fungal sources as reducing agents, resulting in the creation of iron oxide nanoparticles (PC-FeONPs) with antibacterial and anticancer properties.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Energy & Fuels
Jagadeesh Ramadoss, Arumugam Sonachalam, Mani Govindasamy
Summary: This study improved the electrochemical properties of MXene-based composite materials by modifying the surface structure, resulting in higher specific capacitance and specific energy. The synthesized material showed excellent performance as a bifunctional catalyst for electrochemical supercapacitors and hydrogen evolution. It also exhibited good performance in terms of cycling stability and oxidation resistance.
Article
Engineering, Environmental
Mani Govindasamy, Zeid A. ALOthman, Razan A. Alshgari, Rameshkumar Arumugam, Chi-Hsien Huang
Summary: In this study, an enzyme-free electrochemical sensor based on orthorhombic bismuth molybdate nanoparticles decorated graphene oxide composite was developed for detecting hexestrol. Hexestrol is a non-steroidal estrogen with carcinogenic and toxic effects on the human body. The modified sensor showed high selectivity, reproducibility, and stability, and had a wide linear range and low limit of detection, making it suitable for real-time applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
A. Vijayaraj, R. Prabu, R. Suresh, R. Sangeetha Kumari, V. Kaviyarasan, V. Narayanan, P. Tamizhdurai, V. L. Mangesh, Fatmah Ali Alasmary, Umamaheswari Rajaji, Mani Govindasamy
Summary: This study reports the characterization of several d-f heterobinuclear [GdCuL1-5(bpy)2(NO3)2] complexes based on 2,2'-bipyridyl ligands using spectroscopy and elemental analysis. The complexes were investigated for their luminescence, genetic code properties, catalytic activity, magnetism, and breaking attributes. The [GdCuL1-5(bpy)2(NO3)2] complexes exhibited two one-electron irreversible reduction events and showed ferromagnetic coupling. The inceptive rate of progress for oxidizing 1,2-benzenediol to cyclohexa-3,5-diene-1,2-dione was higher for longer chain complexes. The [GdCuL5(bpy)2(NO3)2] and [GdCuL4(bpy)2(NO3)2] complexes showed strong DNA genetic code properties, and the complexes exhibited singlet oxygen-mediated oxidative rift of circular recombinant plasmid pBR322 cloning vector in the presence of 2-sulfanylethanol.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Analytical
Tai-Ze Wu, Chen - Rong Jian, Mani Govindasamy, Yen-Cheng Li, Yi-Ting Lin, Ching-Yuan Su, Seiji Samukawa, Chi-Hsien Huang
Summary: Chemiresistive biosensors using graphene layered materials have improved sensitivity, and we propose a method using a commercial heat-shrinkable material to induce crumpled graphene for cancer biomarker detection. The crumpled graphene is oxidized and immobilized with a DNA probe, and the electrical resistance change rate is measured as a sensor response to detect miRNA-21.
MICROCHEMICAL JOURNAL
(2023)
