Article
Chemistry, Multidisciplinary
Chenyi Yuan, Xiqing Wang, Xuanyu Yang, Abdulaziz A. Alghamdi, Fahad A. Alharthi, Xiaowei Cheng, Yonghui Deng
Summary: Novel sulfonic acid functionalized core-shell Fe3O4@carbon microspheres were designed and synthesized as an efficient and recyclable heterogeneous acid catalyst. These microspheres possess magnetic properties, high saturation magnetization value, uniform core-shell structure, and abundant acid functional groups. They exhibited high selectivity and recyclability in the acetalization reaction, demonstrating promising potential for industrial applications.
CHINESE CHEMICAL LETTERS
(2021)
Article
Energy & Fuels
Daokui Li, Xiaochao Zuo, Xinyi Zhang, Yili Tang, Xiaoguang Zhao, Yanting Zhang, Huaming Yang
Summary: An effective strategy for synthesizing composite microspheres with a core-shell structure for encapsulated paraffin was reported. The resulting materials showed high photothermal conversion efficiency and excellent heat energy storage capacity, making them promising for solar collector systems and energy-saving buildings.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Lixin Li, Lei Wang, Chunhong Zhang
Summary: In this study, hierarchical MnMoO4@NC core-shell microspheres were synthesized as advanced electrode materials for both lithium-ion batteries (LIBs) and potassium-ion batteries (PIBs), showing improved performance due to the semi-hollow microsphere structure of MnMoO4 and the uniform nitrogen-doped carbon layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Qisi Ma, Zhanhong Xu, Xiang Li, Xingwang Cheng
Summary: CuCo2S4 with core-shell structure was synthesized by ion exchange self-template method and its microwave absorption properties were studied. At 30% filling, the maximum effective bandwidth was 4.88 GHz, with the strongest absorption peak at -25.52 dB. By blending conductive carbon black nanoparticles, the maximum effective bandwidth of the CuCo2S4/C composite increased to 6.00 GHz, with a strongest absorption peak of -52.60 dB. These results indicate that the addition of conductive carbon black nanoparticles improves impedance matching and polarization loss, leading to enhanced microwave absorption performance of the samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Liling Lei, Xichen Zhang, Yutian Su, Shishan Wu, Jian Shen
Summary: The study investigated the design of an innovative electrode structure, prepared using a metal-organic framework (MOF)-assisted growth strategy and simple hydrothermal dynamics. The optimized electrode structure exhibited distinguished specific capacity, high energy density, and power density under a potential window of 1.5 V.
Article
Chemistry, Physical
Chenxi Li, Xingxing Ni, Yang Lei, Shangyang Li, Lei Jin, Bo You
Summary: A novel, green, and facile plasmolysis-inspired route was developed to fabricate yolk-shell hydrogel-core@void@MXene-shell nanocomposite microspheres, which showed excellent electromagnetic interference shielding effectiveness.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Hao Gu, Yiqing Zeng, Shipeng Wan, Shule Zhang, Qin Zhong, Yunfei Bu
Summary: A three-dimensional NS@NCCH tree-like core-shell microarray was designed and fabricated for high-performance flexible supercapacitors. The electrode exhibited high capacity and rate performance, as well as excellent cycling stability, attributed to the optimized core-shell structure and substrate material. Moreover, it was assembled into a flexible all-solid-state asymmetric supercapacitor with negligible electrochemical property attenuation even under severe bending or twisting.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Applied
Zhirenyong Zhang, Xiaoxue He, Chaoxi Zeng, Qingming Li, Huiping Xia
Summary: This paper reports the preparation and characterization of gelatin-cassava starch microspheres using the water-in-water emulsion technique. The effects of different weight ratios of starch to gelatin on the morphology, structure, thermal properties, and stability of microspheres were investigated. The results showed that the gelatin-cassava starch microspheres had spherical shapes, smooth surfaces, and a stable yolk-shell structure. The swelling capacity increased with the proportion of gelatin, and the crystalline structure of microspheres changed. The microspheres can be used as a potential material for microencapsulation.
CARBOHYDRATE POLYMERS
(2024)
Article
Polymer Science
Carol Lopez de Dicastillo, Eliezer Velasquez, Adrian Rojas, Luan Garrido, Maria Carolina Moreno, Abel Guarda, Maria Jose Galotto
Summary: In this study, betalains were successfully extracted from red beetroot and encapsulated into the core of coaxial electrosprayed capsules composed of hydroxypropyl methylcellulose and gelatin. The best composition for betalain protection was found to be incorporating the beetroot extract in the gelatin core and hydroxypropyl methylcellulose shell. The effectiveness of this core/shell structure was confirmed for future food applications.
Article
Materials Science, Multidisciplinary
Cherng-Jyh Ke, Kuo-Hui Chiu, Ching-Yun Chen, Chiung-Hua Huang, Chun-Hsu Yao
Summary: In this study, 3D alginate-gelatin core-shell capsules (AGC) were fabricated using a microfluidic device to encapsulate human osteoblast-like MG-63 cells. Characterization of the morphology and physicochemical properties of AGC was done using various analytical techniques. The results showed that AGC exhibited excellent stability and cell viability, while the 3D cultured MG-63 cells outperformed in terms of cellular functions and gene expression compared to traditional 2D cell culture.
MATERIALS & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Min Zhao, Zhenpeng Cui, Duoqiang Pan, Fuyou Fan, Junhao Tang, Yameng Hu, Yang Xu, Pengcheng Zhang, Ping Li, Xiang-Yu Kong, Wangsuo Wu
Summary: A novel amidoxime-functionalized flower-like magnetic Fe3O4@TiO2 core-shell microspheres were designed and synthesized for efficient removal of U(VI) from aqueous solutions and seawater. The high adsorption capacity, stability, and reusability of the microspheres, along with their excellent selectivity, make them a promising material for uranium extraction. The material provides an effective and applicable solution for radioactive element elimination and enrichment.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Ceramics
Huanhuan Niu, Xuewen Jiang, Yongde Xia, Hailong Wang, Rui Zhang, Hongxia Li, Bingbing Fan, Yanchun Zhou
Summary: By employing a combinatorial electrostatic assembly and hydrothermal reaction method, SiO2@Ti3C2Tx@CoNi microspheres with hydrangea-like core-shell structure were designed and prepared to address the issues of high permittivity and self-stacking in Ti3C2Tx MXene. These microspheres consist of an outer layer of CoNi nanosheets and intermediate Ti3C2Tx MXene nanosheets wrapping on the modified SiO2 core, resulting in homogeneous and heterogeneous interfaces. The optimized impedance matching and core-shell structure enhance the reflection loss (RL) through electromagnetic synergy, leading to outstanding microwave absorption (MA) performance with an RL value of -63.95 dB and an effective absorption bandwidth (EAB) of 4.56 GHz at an ultra-thin thickness of 1.2 mm. This research demonstrates the highly efficient trilayer core-shell structure designing strategy for tuning the MA performance of MXene-based microspheres.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Polymer Science
Artyom S. Pryadko, Vladimir V. Botvin, Yulia R. Mukhortova, Igor Pariy, Dmitriy V. Wagner, Pavel P. Laktionov, Vera S. Chernonosova, Boris P. Chelobanov, Roman V. Chernozem, Maria A. Surmeneva, Andrei L. Kholkin, Roman A. Surmenev
Summary: Novel hybrid magnetoactive composite scaffolds based on poly(3-hydroxybutyrate) (PHB), gelatin, and magnetite (Fe3O4) were fabricated by electrospinning. The hybrid scaffolds exhibited both core-shell and ribbon-shaped structure, with submicron-sized Fe3O4 particles observed on the surface layers. The presence of gelatin was revealed through X-ray photoelectron spectroscopy. Incubation in saline decreased the amount of gelatin on the surface. The melting temperature and crystallinity of the scaffolds decreased with the addition of gelatin. The composite scaffolds were non-toxic and showed promising magnetization for biomedical applications.
Article
Materials Science, Multidisciplinary
Sai Gao, Guozheng Zhang, Yi Wang, Xiaopeng Han, Ying Huang, Panbo Liu
Summary: In this study, a series of MOFs derived magnetic porous carbon microspheres with tunable diameter and high specific surface area have been successfully synthesized via a pyrolysis process. These carbon microspheres exhibit high-performance microwave absorption with low filler loading, showing potential for practical applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Linhe Yu, Qihao Yang, Guozhen Zhu, Renchao Che
Summary: Core-shell honeycomb-like Co3O4@C microspheres were synthesized and exhibited long cycling life and excellent rate capability, providing a new idea for the development of high-performance lithium-ion battery anode materials.
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.