Article
Medicine, Research & Experimental
Shimaa Nabih, Shaymaa Sherif Hassn
Summary: The composite material of reduced graphene oxide embedded with gold and silver nanoparticles shows stronger anticancer effects and higher drug stability against drug-sensitive breast cancer cells. Synthesized using wet chemistry, the nanocomposite has the potential for medical applications and promising future prospects.
Article
Chemistry, Physical
Nikolaos D. Adamopoulos, Nikos G. Tsierkezos, Afroditi Ntziouni, Fu Zhang, Mauricio Terrones, Konstantinos V. Kordatos
Summary: This study synthesized and characterized three different nanocomposite materials, including silver and zinc oxide nanoparticles modified reduced graphene oxide (rGO), and rGO modified with both silver and zinc oxide nanoparticles. These materials were characterized using XRD, FTIR, TGA, Raman spectroscopy, SEM, and TEM techniques. The electrochemical responses of these materials towards the standard ferrocyanide/ferricyanide [Fe(CN)6]3-/4- redox system were investigated using CV and EIS techniques. The results showed that ZnO modified rGO exhibited excellent electrochemical performance, attributed to the high surface area of ZnO, providing a larger electrode/electrolyte interface and more sites at the electrolyte-ZnO interface.
Article
Chemistry, Physical
Han Liang, Yue Feng, Hongchen Liu, Wei Han, Tao Shen
Summary: This article presents a highly sensitive photonic crystal fiber humidity sensor based on surface plasmon resonance (SPR). By coating and optimizing the structural parameters, the sensor exhibits high sensitivity and humidity sensitivity. The graphene coating helps to enhance the sensitivity of the sensor. This sensor can be widely used in intelligent detection and security monitoring.
Article
Materials Science, Multidisciplinary
Zai-Hua Duan, Qiu-Ni Zhao, Cheng-Zhen Li, Si Wang, Ya-Dong Jiang, Ya-Jie Zhang, Bo-Hao Liu, Hui-Ling Tai
Summary: This paper presents a humidity sensor based on p-type reduced graphene oxide and n-type WS2 nanoparticles modification, which has positive humidity sensitivity and good linear response; the sensitivity of the rGO/WS2 humidity sensor is higher, mainly attributed to the p-n heterojunction; the sensor has small humidity hysteresis and good repeatability.
Article
Multidisciplinary Sciences
Gun Chaloeipote, Jaruwan Samarnwong, Pranlekha Traiwatcharanon, Teerakiat Kerdcharoen, Chatchawal Wongchoosuk
Summary: In this study, a low-cost, fast and simple resistive-type humidity sensor based on graphene quantum dots and silver nanoparticles was developed, showing excellent humidity response and fast response/recovery times. The sensing mechanism involves the formation of Schottky junction and intrinsic synergistic effects between GQDs and AgNPs.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Nguyen The Hue, Qiang Wu, Weihua Liu, Xiangrui Bu, Haiyang Wu, Chang Wang, Xin Li, Xiaoli Wang
Summary: A novel hybrid film for ammonia detection based on a GO/graphene stack is proposed in this paper, showing excellent sensing characteristics through optimization of GO layer thickness. The GO layer serves as a molecular capture layer while graphene serves as a conductive layer, achieving significant improvement in the ammonia gas sensing performance.
Article
Chemistry, Multidisciplinary
Yang Lu, Zhan-She Guo, Shang-Chun Fan
Summary: This study utilized a graphene beam to create a graphene resonant gyroscope structure with high sensitivity and direct frequency output. Simulation results indicated that the resonant frequency of the graphene resonant beam decreased with increasing length and thickness, while width had minimal effect. The designed gyroscope had a fundamental frequency exceeding 20 MHz and angular velocity sensitivity up to 22,990 Hz/degrees/hour, making it suitable for applications requiring high sensitivity to weak angular velocity variations.
Article
Multidisciplinary Sciences
Lucie Hochvaldova, David Panacek, Lucie Valkova, Robert Prucek, Vera Kohlova, Renata Vecerova, Milan Kolar, Libor Kvitek, Ales Panacek
Summary: This study reports an effective way of enhancing and restoring the antibacterial activity of inactive antibiotics by using a cyanographene/Ag nanohybrid. The combined treatment showed synergistic and partial synergistic effects against multiresistant bacterial strains, indicating the potential of the nanohybrid in overcoming antibiotic resistance. The study also revealed that the interaction between the antibiotic's mode of action and the bacterial resistance mechanism strongly influenced the efficacy of the combined treatment.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Jian Zhang, Priyanka Singh, Zhejian Cao, Shadi Rahimi, Santosh Pandit, Ivan Mijakovic
Summary: The development of antibacterial coatings is important for preventing biofilm formation on medical devices. This study presents a simple method to fabricate antibacterial coatings by combining the properties of polydopamine and graphene oxide. The coatings successfully loaded with tetracycline and green-synthesized silver nanoparticles exhibited strong inhibitory effects on Staphylococcus aureus and Escherichia coli biofilms, with over 1000-fold reduction in biofilm formation. The results suggest that these coatings have potential as an approach to prevent infection associated with implantable biomedical devices.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Faezeh Ejehi, Raheleh Mohammadpour, Elham Asadian, Somayeh Fardindoost, Pezhman Sasanpour
Summary: The study introduced a TENG electrode sensitive to the adsorption of water molecules to create a self-powered humidity sensor, using GO and GONR nanomaterials and various paper structures to achieve excellent performance. GONR as an additive significantly enhances the performance of humidity sensors and demonstrates rapid response and recovery behavior.
Article
Chemistry, Inorganic & Nuclear
Akhalakur Rahman Ansari, Sajid Ali Ansari, Nazish Parveen, Mohammad Omaish Ansari, Zurina Osman
Summary: A ternary nanocomposite of Ag-rGO@NiO was successfully fabricated as an electrode material for supercapacitor applications. The composite showed excellent capacitive performance with a high capacitive value of 1230 Fg-1, which was significantly higher than that of binary rGO@NiO (337.5 F g-1) and bare NiO flakes (145 F g-1) at a current density of 1 A g-1. The enhanced capacitive value was attributed to the highly conductive rGO sheets and Ag nanoparticles, where rGO provided a conductive path and Ag created new channels for electron transfer. The composite also exhibited excellent cyclic stability, retaining 88.5% of its initial capacitive value after 3000 cycles, and showed a high energy density of 27.33 Wh kg-1 at a power density of 200.073 W kg-1.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yanying Cui, Linan Xu, Haitao Li, Xuan Wang, Fuwei Sun, Huan Wang, Xinguang Guo, Yihe Zhang, Hongbo Gao, Qi An
Summary: Surface-enhanced Raman scattering (SERS) technique is widely used for trace molecule detection. In this study, a Ag cluster@rGO composite nanostructure was developed to achieve ultrahigh sensitivity of SERS. The structure of Ag clusters and the interaction with target molecules were investigated using Density Functional Theory (DFT) calculations and finite-difference time-domain (FDTD) simulations. The results showed that the composite system exhibited strong electromagnetic field enhancements at the edges and interstices of Ag clusters, resulting in efficient charge transfer and enhanced SERS sensitivity.
Article
Engineering, Chemical
Divya Monga, Soumen Basu
Summary: In this study, MoS2/GO composites decorated with Ag nanoparticles were prepared by a microwave-assisted method. The catalyst exhibited high visible-light activity and low charge recombination rate, leading to excellent degradation performance of pollutants. Additionally, the catalyst showed high reusability and efficient photo-mineralization of real wastewater.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Saharman Gea, Suhut A. Situmorang, Nurhaida Pasaribu, Averroes F. R. Piliang, Boy Attaurrazaq, Reka Mustika Sari, Khatarina Meldawati Pasaribu, Stergios Goutianos
Summary: The synthesis of ZnO, Ag, and GO nanocomposites was carried out through multiple stages, resulting in nanofibers with enhanced photocatalytic characteristics and absorption properties in the visible light region.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Electrical & Electronic
Keenan Zhihong Yap, Wei Yin Lim, Ashish Kalkal, P. Gopinath, Narayanan Ramakrishnan
Summary: In this study, a capacitive sensor coated with graphene oxide (GO) was developed for humidity sensing. The GO was directly deposited on gold interdigital electrodes (IDE) using electrophoretic deposition (EPD) technique, and functionalized with magnesium ions. The sensor exhibited ultrahigh sensitivity and stability at different humidity levels.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Ning Li, Xiang-Dong Chen, Xin-Peng Chen, Xing Ding, Xuan Zhao
IEEE ELECTRON DEVICE LETTERS
(2017)
Article
Engineering, Electrical & Electronic
Ning Li, Xiang-Dong Chen, Xin-Peng Chen, Xing Ding, Xuan Zhao
IEEE ELECTRON DEVICE LETTERS
(2018)
Article
Chemistry, Multidisciplinary
Jian Li, Ning Li, Yuanyuan Zheng, Dongyang Lou, Yue Jiang, Jiaxi Jiang, Qunhui Xu, Jing Yang, Yujing Sun, Chuxuan Pan, Jianlan Wang, Zhengchun Peng, Zhikun Zheng, Wei Liu
Summary: A facile interfacial locking strategy has been developed to fabricate metal aerogel-based pressure sensors with excellent sensitivity and prominent stability. The sensors have high sensitivity, fast response time, and outstanding durability, making them suitable for real-time monitoring of HMI activities.
Article
Chemistry, Multidisciplinary
Feihu Tan, Hua An, Ning Li, Jun Du, Zhengchun Peng
Summary: The study prepared a high ionic conductivity LLTO electrolyte through magnetron sputtering, successfully improving the performance of solid-state batteries; by using low volume change rate NCM and LTO electrodes, a battery with high output voltage was prepared, achieving a long cycle life and stable capacity.
Article
Chemistry, Multidisciplinary
Ning Li, Yue Jiang, Yan Xiao, Bo Meng, Chenyang Xing, Han Zhang, Zhengchun Peng
