Article
Polymer Science
Shangying Zhang, Qi Wang, Fengna Dai, Yangyang Gu, Guangtao Qian, Chunhai Chen, Youhai Yu
Summary: The study successfully prepared TiNPs/PSF composite microspheres with good ability to degrade methyl blue, and the porosity, density, and photoactivity of the composite microspheres are influenced by the loading amount of TiO2.
Review
Polymer Science
Saba Ayub, Beh Hoe Guan, Faiz Ahmad, Yusuff Afeez Oluwatobi, Zaib Un Nisa, Muhammad Faisal Javed, Amir Mosavi
Summary: With advancements in the automated industry, electromagnetic interference (EMI) has become a growing concern, impacting electronic appliances and end-users. Polymer-based composites have shown remarkable results in dealing with EMI, especially within the X-band frequency range. Further research is needed to explore new combinations for higher frequency ranges.
Article
Chemistry, Multidisciplinary
Zongdeng Wu, Haitao Ye, Bin Zhang, Juanjuan Song, Yang Wang, Di Yao, Chengxin Wang, Xifeng Xia, Wu Lei, Qingli Hao
Summary: The CuCo2O4/rGO hollow microspheres, prepared by electrostatic self-assembly, demonstrate outstanding lithium-ion storage capabilities and remarkable rate capacity. The hollow microspheres with mesoporous shells facilitate electrolyte penetration and shorten the lithium ion transfer distance, while the encapsulation of graphene improves the conductivity and stability of CuCo2O4, enhancing its Li+ storage performance. This efficient method proves to enhance the electrochemical properties of metal compounds for better energy storage applications.
Article
Chemistry, Physical
Le Jin, Jiqi Wang, Fei Wu, Yanan Yin, Baoliang Zhang
Summary: In this study, two MXene-based magnetic composites were innovatively fabricated and a high efficiency microwave absorbing system was obtained by blending these composites with the optimal ratio. The microwave absorbing mechanism mainly includes dielectric loss, magnetic loss, multiple reflection, and conductive loss.
Article
Chemistry, Physical
Xicong Ye, Qi Gao, Enyi He, Chao Yang, Peng Yang, Tangming Yan, Yongsheng Ye, Haihua Wu
Summary: The RGO-CIP composite microspheres were prepared using ethyl cellulose and epoxy resin. They effectively combined graphene (RGO) with carbonyl iron powder (CIP) to achieve multiple loss mechanisms and good electromagnetic absorption capability. The microspheres were used to prepare a 3D printed wire, which showed excellent electromagnetic properties. Heterogeneous interfaces formed on the surface and inside of the microspheres enhanced microwave reflections and scattering.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Xun Hui Wu, Yoon Yee Then
Summary: This study presents a facile and cost-effective method for fabricating superhydrophobic surfaces using graphene and titanium dioxide nanoparticles. The graphene/TiO2-coated surfaces on a biodegradable thermoplastic poly(lactic acid) substrate achieved excellent water-repellent properties, making them suitable for reducing hazardous complications in medical devices. The durability and effectiveness of the superhydrophobic coating further suggest its potential in biomaterial manufacturing.
Article
Chemistry, Multidisciplinary
Yin Yang, Ziyang Wang, Shaobo Zheng
Summary: A high-efficient route for preparing few-layer graphene is proposed in this study, where the secondary exfoliation of unexfoliated graphite flakes from electrochemical exfoliation is achieved by using ultrasonication assisted microwave exfoliation technique. The results show the potential of synthesizing high-quality graphene at an industrial-scale.
Article
Engineering, Environmental
Honglian Liang, Shujun Wang, Yanhong Lu, Ping Ren, Guihua Li, Fenghao Yang, Yu Chen
Summary: The study successfully achieved highly efficient degradation of dyes using cheap graphene-doped titanium dioxide microspheres prepared with a simple method. The experimental results were in line with the Langmuir-Hinshelwood model, and the photocatalytic reactions were first-order reactions in the primary stage. Additionally, new photocatalytic degradation mechanisms were proposed in this work.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Linhe Yu, Qihao Yang, Guozhen Zhu, Renchao Che
Summary: Co3O4/VG/CNT composite microspheres were prepared with a three-dimensional conductive network using vertical graphenes and CNTs, which improved electron transmission efficiency, achieved high rate performance and long cycling stability.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Gaoxing Sun, Shuxin Zhuang, Deli Jia, Xiaoxiao Pan, Yuqing Sun, Feiyue Tu, Mi Lu
Summary: The effects of graphene content on phase evolution and conductivity of a titanium/graphene composite fabricated by spark plasma sintering were investigated. The introduction of graphene resulted in the in-situ production of TiC on the crystal boundaries, improving the densification of the composite and facilitating electron conduction. The conductivity of the titanium matrix composite can be tuned by the amount of graphene introduced, with a maximum conductivity of 2.77 x 104 S/cm observed when the graphene content reached 0.5 wt%.
Review
Chemistry, Multidisciplinary
Olena Okhay, Alexander Tkach
Summary: This review surveys recent achievements in the development of supercapacitors (SC) based on composites of carbon-derived materials, discussing factors influencing specific capacitance and overviewing specific energy, power, and cycling stability of SC with composite electrode materials.
Article
Chemistry, Physical
Ahmed S. Haidyrah, Periyasamy Sundaresan, Krishnan Venkatesh, Sayee Kannan Ramaraj, Balamurugan Thirumalraj
Summary: This study demonstrates the amperometric detection of nitrofurantoin antibacterial drug using a simple fabrication of functionalized carbon nanofibers and carbon black hybrid composite, showing superior electrochemical performance. The hybrid composite can be further utilized for the fabrication of new-generation sensing devices and energy storage devices.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Guozhen Zhu, Qihao Yang, Zhen Yang, Renchao Che
Summary: Porous hollow Co3O4 microspheres wrapped with graphene oxide were synthesized by a step solvothermal method and subsequent heat treatment. This design greatly increased the specific surface area and achieved sufficient contact between the microspheres and electrolyte, resulting in a high charge specific capacity of 888.59 mA h g-1. The porous and hollow structure provided stress relief during charging/discharging, leading to excellent cycling stability and a specific capacity of 465.75 mA h g-1 at the 1000th cycle. Furthermore, the tight package of graphene oxide greatly improved the conductivity of Co3O4 microspheres, enabling superior rate performance of 280.99 mA h g-1 at 10 C.
Article
Thermodynamics
Huiqing Mao, Xiandie Zhang, Rui Cui, Chun Zhang, Xiang Zhou
Summary: Si@PVDF composite microspheres with Si nanopowder uniformly distributed were prepared by electrostatic spraying method. The improved interfacial contact quality in Si@PVDF led to enhanced chemical reactivity, as evidenced by reduced reaction onset temperature, peak temperature, and apparent activation energy compared to physically mixed Si/PVDF counterpart. Si/PVDF could not be ignited by Joule heating, while self-sustained combustion propagation was observed for Si@PVDF pellets. The combustion process of Si@PVDF pellets was influenced by equivalence ratio, pellet porosity, and O2 accessibility in the environment.
COMBUSTION AND FLAME
(2023)
Article
Construction & Building Technology
T. Jesiak, M. Hasiak, A. Laszcz, J. Checmanowski, Y. Gerasymchuk, P. Stachowiak, W. Strek, D. Hreniak
Summary: This study explores the combination of thermal insulation properties of porous oxide material and the exceptional thermal conductivity properties of graphene flakes. Blocks of porous glass foam matrix were prepared using the sol-gel method and heat treatment at 450 degrees C. The microstructure of the samples was analyzed using scanning electron microscopy, Raman spectroscopy, and X-ray diffraction. The thermal and mechanical properties of the samples were discussed in relation to their potential applications as novel thermo-smart composite materials.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
