Article
Chemistry, Inorganic & Nuclear
T. E. Somesh, Siddaramaiah, T. Demappa
Summary: Poly(vinyl alcohol) (PVA)/silver aluminium oxide (AgAlO2)@reduced graphene oxide (rGO) nanocomposites (NCs) were fabricated as flexible supercapacitor electrodes using a solution casting approach. The NCs exhibited excellent electrochemical performance, wide operating potential windows, high specific capacitance, energy density, and power density, as well as negligible equivalent series resistance and charge transfer resistance. The addition of AgAlO2 NPs in the NCs showed better specific capacitance, providing a new approach for fabricating supercapacitor electrodes.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
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, 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
Energy & Fuels
T. Ravindran Madhura, Georgepeter Gnana Kumar, Ramasamy Ramaraj
Summary: The reduced graphene oxide and nickel-cobalt oxide (rGO-NiCo2O4) nanocomposite material, prepared via hydrothermal method with optimized rGO, serves as a bifunctional electrocatalyst for glucose oxidation reaction and oxygen reduction reaction, showing excellent performance under alkaline conditions.
Article
Energy & Fuels
Ali A. Ensafi, Reihaneh Fazel, Behzad Rezaei, Jin-Song Hu
Summary: Metal-organic frameworks (MOFs) are attracting attention as innovative electrode materials for supercapacitors due to their high porosity, active sites, and tunable structures. In this study, a new MOF composite was fabricated by a hydrothermal method, showing a high porous structure mainly spread on thin graphene oxide nano-sheets. The resulting electrode exhibited superior electrochemical characteristics with high specific capacitance and excellent capacitance retention.
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
Biochemistry & Molecular Biology
Vladislav V. Shunaev, Olga E. Glukhova
Summary: Graphene and magnetite composites show potential for use in flexible energy storage devices due to the excellent properties of these materials. This study used quantum chemical methods to examine how the concentration of magnetite affects the energetic and electronic parameters of the composites. Results show that adding magnetite to graphene can change its zone structure and capacitive properties, allowing the capacity of the composite to be tuned for various supercapacitor applications.
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
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, Multidisciplinary
Supakeit Chanarsa, Jaroon Jakmunee, Kontad Ounnunkad
Summary: A bi-functional material based on silver nanoparticles-reduced graphene oxide composite was successfully synthesized for the construction of a label-free electrochemical immunosensor. The material showed good conductivity/electroreactivity and could generate an analytical response for the detection of human immunoglobulin G. Detection of IgG in human serum using the immunosensor displayed satisfactory accuracy and the potential for further development in clinical diagnosis.
FRONTIERS IN CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Neda Nazari, Masoud Dehghani Mohammad Abadi, Adrine Malek Khachatourian, Mohammad Golmohammad, Ali Nemati
Summary: This study synthesized three-dimensional reduced graphene oxide (3D rGO) doped with Phosphorus, Nitrogen, or both for high-efficiency supercapacitors using a hydrothermal process. The material showed high specific capacitance, energy density, power density, and good stability.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Energy & Fuels
Meng Gao, Xia Dong, Kedian Wang, Wenqiang Duan, Xiaomao Sun, Chenguang Zhu, Wenjun Wang
Summary: A one-step picosecond laser direct-writing method is proposed to synthesize graphene/MnO nanocomposites and process interdigital electrodes for microsupercapacitors, achieving a high specific capacitance of 470 mF cm(-2). The symmetric microsupercapacitors based on graphene/MnO interdigital electrodes exhibit excellent electrochemical performance, with a maximum energy density of 4.89 mu MTh cm(-2) and a maximum power density of 0.72 mW cm(-2). This approach also offers a way to synthesize other graphene/metal oxide nanocomposites for microsupercapacitors.
JOURNAL OF ENERGY STORAGE
(2021)
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
Energy & Fuels
M. Muthuselvi, K. Jeyasubramanian, G. S. Hikku, M. Muthuselvan, Muthusankar Eswaran, N. Senthil Kumar, Vinoth Kumar Ponnusamy
Summary: In this study, Y(2)O(3)NPs-doped rGONSs nanocomposites (Y-rGO) were prepared and applied as hybrid electrode materials for evaluating supercapacitor performances. It was found that the 5 wt% Y-rGO displayed improved supercapacitor performance with high specific capacitance and excellent cyclic retention, suggesting its commercial viability for energy storage devices.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)