Article
Chemistry, Multidisciplinary
Pin Zhang, Yao Yao, Wenke Zhou, Yawen Liu, Xiaowei Cao, Zhi Zhang
Summary: This study explores a new composite absorbing material based on reduced graphene oxide and NiMnO3, which significantly improves the electromagnetic wave dissipation ability and impedance matching ratio. It achieves full coverage of electromagnetic waves and is an ideal material for electromagnetic wave protection.
Article
Chemistry, Physical
Huan Zhang, Nian Luo, Tinglong Liu, Feng Chen, Qiang Fu
Summary: This study prepared a series of large-sheet GO using a thermal reduction method and investigated their MA properties. The results showed that the MA performance of rGO was related to the reduction degree and the size of the sheet. Large sheet graphene was more likely to form a conductive network, reducing the filler loading. By mixing rGO with different reduction degrees, the reflection loss and absorption bandwidth were significantly improved, while the loading was only 1.5 wt%.
Article
Materials Science, Multidisciplinary
Lianyang Chen, Qiong Deng, He He, Tian Ye, Yihang Li, Hanjun Wei, Chunlin Zhou, Feng Zhao, Qingyuan Wang
Summary: In this study, rGO/ScFeO3 composites were synthesized to improve the microwave absorption performance. The results showed that the addition of ScFeO3 particles significantly enhanced the absorption performance of the composites, and this improvement was attributed to the effective complementarity between ScFeO3 particles and carbon sheet. Furthermore, it was found that the microwave absorption properties of the composites were controlled by the ScFeO3 content.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Samarjit Singh, Sushil Kumar Singh, Abhishek Kumar, Biplab Das
Summary: The present study focuses on the electromagnetic wave absorption characteristics of reduced graphene oxide flakes/silicon carbide composites. The composites were prepared by mechanically mixing SiC particles and rGO flakes using a simple ball mill mixing route. The results showed that the addition of a small quantity of rGO flakes significantly improved the EM wave absorption characteristics of the composites. The synthesized composites exhibited improved EM wave absorption performance, with minimum reflection loss and a wide absorption bandwidth. The dispersion of rGO flakes improved the interfacial and dipole polarizations, resulting in enhanced EM wave attenuation behavior.
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Nanoscience & Nanotechnology
Qingqing Chen, Daxin Li, Xingqi Liao, Zhihua Yang, Dechang Jia, Yu Zhou, Ralf Riedel
Summary: Lightweight SiBCN ceramic nanofibers with tunable electromagnetic wave absorption were prepared by electrostatic spinning and high-temperature annealing techniques. The defect-free nanofibers, composed of an amorphous matrix, beta-SiC, and free carbon nanocrystals, exhibited good microwave absorption properties after annealing at 1600 degrees C. The optimized microstructure endowed the SiBCN ceramic nanofibers with potential applications as lightweight and ultrastrong radar wave absorbers in military and commercial markets.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Wenjing Yu, Gaofeng Shao
Summary: This study designs defective graphene with two-dimensional planar structure and three-dimensional continuous network structure, and compares their performance in microwave attenuation. Defective graphene with three-dimensional continuous network structure exhibits characteristics of ultra-low filling content and broadband absorption, while defective graphene with two-dimensional planar structure shows good microwave absorption performance at low thickness and low frequency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Jimei Xue, Fangyuan Ren, Yongpeng Dong, Hanjun Wei, Fan Yang, Laifei Cheng
Summary: SiCN-based ceramics with broadband and strong microwave absorption properties exhibit outstanding electromagnetic wave absorption performance through the unique hetero-interface of Si3N4-BN, Si3N4-SiCN, and BN-SiCN in the ceramics synthesized using the CVI method. This leads to an effective absorption bandwidth covering the entire X-band.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Jinxiu Zhao, Xuejing Liu, Xiang Ren, Xu Sun, Dongxu Tian, Qin Wei, Dan Wu
Summary: The study found that defective-rich ZnS nanoparticles supported on reduced graphene oxide can serve as a high-efficiency electrocatalyst for converting N-2 to NH3, showing high yield and excellent selectivity. Through experiments and calculations, it was revealed that this catalyst activates N-2 molecules and synthesizes NH3 directly from N-2.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Nanoscience & Nanotechnology
Ali Saffar Shamshirgar, Rocio E. Rojas Hernandez, Girish C. Tewari, Jose Francisco Fernandez, Roman Ivanov, Maarit Karppinen, Irina Hussainova
Summary: Graphene-enhanced composites show high absorption efficiency in X-band, with significant improvement at specific ratios. By constructing a functionally graded multilayer design, the highest absorption efficiency of 99.99% was achieved, demonstrating the potential of fillers and multilayer designs for microwave absorbers.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Ali Saffar Shamshirgar, Maria Fernandez Alvarez, Adolfo del Campo, Jose Francisco Fernandez, Rocio E. Rojas Hernandez, Roman Ivanov, Johanna Rosen, Irina Hussainova
Summary: This study incorporates graphene-augmented alumina nanofibers into epoxy resin to fabricate a tunable absorption multilayer structure for electromagnetic interference shielding and RF absorption. Highly aligned graphene augmented alumina nanofibers were produced using a hot wall one-step catalyst-free chemical vapor deposition method. The highest loss tangent of 0.4 was achieved in a composite containing 1 vol% of randomly oriented nanofibers. A superposed three-layer structure was fabricated, offering an absorption of >90% in the entire X-band and an absorption peak of -25 dB at around 11 GHz. The hybrid nanofibers with a dual loss function show potential for versatile design options in RF absorption.
Article
Nanoscience & Nanotechnology
Lichang Wang, Li Huang, Xihua Wang, Ye Yuan
Summary: The development of radar technology has increased the need for radar stealth capability in warplanes. This study proposes a strategy to create a plastic microwave-absorbing putty by encapsulating liquid metal with reduced graphene oxide (rGO). The putty, formed through electrostatic self-assembly, shows excellent properties and achieves a minimum reflection (RLmin) of -58.86 dB at 8.93 GHz with a small thickness of 3.57 mm. This composite putty can be a potential candidate for reducing the radar cross section of airplanes.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Ceramics
Xiaohui Li, Ruiwen Shu, Yue Wu, Jiabin Zhang, Zongli Wan
Summary: The study prepared nitrogen-doped reduced graphene oxide decorated by cerium oxide particles hybrid nanocomposite through a hydrothermal and calcination two-step route, aiming to achieve broad absorption bandwidth, strong absorption intensity, and thin matching thickness. The hybrid nanocomposite demonstrated minimal reflection loss of -57.2 dB at 13.4 GHz, maximum absorption bandwidth of 4.6 GHz, and strong absorption intensity throughout the measured thickness range.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Xinxin Wang, Kang Fu, Xiaoyi Wen, Shichao Qi, Guoxiu Tong, Xiaojuan Wang, Wenhua Wu
Summary: This study demonstrates that oxygen vacancy engineering can modulate the electric structure and properties of metal oxides to enhance microwave absorption. By tuning the thermal conversion temperatures, dual-shell CeO2 nanospheres with high oxygen vacancy concentration and proper conductivity can achieve superior microwave absorption capabilities.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Lanlan Deng, Ruiwen Shu, Jiabin Zhang
Summary: This study prepared nitrogen-doped reduced graphene oxide/nickel ferrite composite foams by solvothermal and hydrothermal methods for microwave absorption. The results showed that the microwave absorption performance of the composite foams could be improved by adjusting the calcination temperature, with the best performance achieved at 650.0 degrees C for 2.0 h, exhibiting a minimum reflection loss of -60.6 dB and an ultrathin matching thickness of 1.55 mm.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Panpan Zhang, Xu Wang, Yangyang Yang, Haifeng Yang, Chunsheng Lu, Mingru Su, Yu Zhou, Aichun Dou, Xiaowei Li, Xiaochuan Hou, Yunjian Liu
Summary: In this study, the influence of transition metal doping on the electronic and mechanical properties and electrochemical performance of 2HMoS2/NC was investigated using Cobalt (Co) as an example. Co doping was found to effectively improve the electronic conductivity and active site areas of 2H-MoS2/NC at different positions, optimizing the adsorption and diffusion capability of potassium ions. Furthermore, the study revealed the optimal roles of different types of nitrogen atoms in kinetic adsorption, diffusion, and interfacial stability of potassium ions. These findings provide guidance for the experimental design of high rate 2H-MoS2/NC electrode materials and the optimal design of other functional composite materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zeeshan Ajmal, Mahmood Ul Haq, Shahid Zaman, M. K. Al-Muhanna, Anuj Kumar, Mohammed M. Fadhali, Siwar Ben Hadj Hassine, Muhammas Qasim, K. F. Alshammari, Ghulam Abbas Ashraf, Abdul Qadeer, Adil Murtaza, Sulaiman Al-Sulaimi, Huaqiang Zeng
Summary: This study presents a novel heterojunction structure (SrTiO3/CN-TAL10.0) for enhanced photocatalytic water splitting (PWS). The incorporation of thiophenedicarboxaldehyde (TAL) through copolymerization significantly improves the photocatalytic activity of carbon nitride (CN) while maintaining its photostability performance. The optimized composition allows efficient isolation of photoinduced charge carriers and enhanced charge transport, resulting in a remarkable increase in overall photocatalytic efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Angela Arnosa-Prieto, Patricia Diaz-Rodriguez, Manuel A. Gonzalez-Gomez, Pelayo Garcia-Acevedo, Lisandra de Castro-Alves, Yolanda Pineiro, Jose Rivas
Summary: Macrophages can exhibit different phenotypes depending on the microenvironment and the characteristics of magnetic iron oxide nanoparticles (MNPs). This study demonstrates that the concentration and morphology of MNPs can influence the polarization of macrophages. The findings have implications for therapeutics targeting tissue regeneration and tumor progression.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yu Fang, Cheng-Ye Zhu, Hao-Cheng Yang, Chao Zhang, Zhi-Kang Xu
Summary: This study demonstrates the advantages of vacuum-assisted interfacial polymerization (VAIP) in fabricating polyimide nanofiltration membranes. By using vacuum filtration, aqueous solutions of PIP can be evenly distributed on different microfiltration substrates, leading to the fabrication of uniform and ultra-thin polyamide layers with excellent performance. The membranes exhibit high rejection rates and water permeance, as well as satisfactory long-term stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Isaac J. Gresham, Edwin C. Johnson, Hayden Robertson, Joshua D. Willott, Grant B. Webber, Erica J. Wanless, Andrew R. J. Nelson, Stuart W. Prescott
Summary: Understanding the interactions between polymers and surfactants is crucial for optimizing commercial systems. This study tested the behavior of polymer-surfactant systems, revealing that they do not behave like polyelectrolytes in the presence of salt. Additionally, the structure of polymer-surfactant complexes under confinement differs from that of polyelectrolytes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yunxiao Xie, Cui Liu, Jie Zhang, Yan Li, Bin Li, Shilin Liu
Summary: This study aimed to improve the microstructure and rheological properties of W/W Pickering emulsions by crosslinking sodium alginate at the water-water interface, thereby enhancing the activity of encapsulated probiotics in simulated gastrointestinal digestion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Sang Ho Lee, Yige Sun, Patrick S. Grant
Summary: This research developed an effective approach to enhance the charging rates of lithium ion batteries (LIBs) by strategically incorporating carbon nanotube (CNT) conductivity boosters into Li4Ti5O12 (LTO) electrodes. Multi-layer architectures comprising CNT-rich and CNT-free LTO electrode layers were manufactured using a layer-by-layer spray coating method to promote charge transfer kinetics of high mass loading electrodes. The best performing multi-layer was paired with a spray-coated LiFePO4 (LFP) positive electrode, resulting in attractive power performance that outperformed conventional LTO || LFP combinations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jingwei Liang, Shaobin Li, Fengbo Li, Li Zhang, Yufeng Jiang, Huiyuan Ma, Kun Cheng, Liang Qing
Summary: A molybdenum-regulated self-supporting electrode material with rich vacancy defects has been successfully synthesized and shows exceptional catalytic activities and stability for electrocatalytic overall water splitting. This study provides a new perspective for the design and synthesis of non-precious metal bifunctional electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jonas Blahnik, Jennifer Schuster, Rainer Mueller, Eva Mueller, Werner Kunz
Summary: This study investigates the relationship between the morphology of PMMA monopolymers and PMMA-PHEMA copolymers with the expected nature of surfactant-free microemulsions (SFMEs) before polymerization. It is found that previously mesostructured, surfactant-free mixtures can produce porous polymers of different morphologies, while unstructured, oil-rich regions lead to solid, transparent polymers without nanostructured morphologies. Additionally, a surfactant-based reference system shows similar phase behavior and polymer morphologies as the comparable surfactant-free system, indicating the importance of the hydrotropic behavior of HEMA in this system.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zheng-Fen Pu, Wen-Zhi She, Rong Sheng Li, Qiu-Lin Wen, Bi-Chao Wu, Chun-Hua Li, Jian Ling, Qiue Cao
Summary: This study synthesized two framework-isomeric covalent organic frameworks (COFs) and discovered that the light scattering signal of COFs can be used for the analytical detection of lead ions. By controlling synthesis conditions and introducing regulators, the morphology of COFs could be controlled and framework-isomeric COFs could be precisely synthesized.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yuchen Weng, Ying Hong, Jingyu Deng, Sicheng Cao, Li-Juan Fan
Summary: This paper reports the preparation of dynamic color-changing fluorescent polymer nanoparticles (PNPs) by constructing a fluorescence resonance energy transfer (FRET) pair. The PNPs show excellent anti-counterfeiting effects and reproducibility. The study demonstrates a promising encryption strategy that can achieve multiple outputs with simple operation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Guodong Liu, Zijian Wang, Jianing Wang, Hanbin Liu, Zhijian Li
Summary: This study investigates the combination of multicolor switchable polyaniline (PANI) electrode and 1-methyl-4,4'-bipyridyl iodide (MBI), which demonstrates superior optical properties in visible and near-infrared light modulation, as well as excellent electrochemical performances. This combination can be used to develop novel electrochromic devices for applications in smart packaging, smart labels, and flexible smart windows.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Huying Yan, Yang Guo, Xingzhi Bai, Jiawei Qi, Haipeng Lu
Summary: By modifying Ti3C2Tx through heterogeneous interface engineering, optimized impedance matching is achieved, leading to enhanced electromagnetic wave absorption performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Kehu Zhang, Yang Zhou, Silvia Moreno, Simona Schwarz, Susanne Boye, Brigitte Voit, Dietmar Appelhans
Summary: This article presents an advanced crosslinking strategy to fabricate clustered polymersomes using host-guest interactions. By controlling the input of crosslinker and environmental conditions, reversible aggregation and disassembly of these polymersomes can be achieved. The size and structure of these clustered polymersomes can be regulated and visualized through a fluorescent enzymatic cascade reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Junjie Xu, Weixiong Huang, Ruiling Li, Li Li, Jinjin Ma, Jiaou Qi, Haiyan Ma, Min Ruan, Lilin Lu
Summary: In this study, a potassium doped palladium catalyst was developed for acetylene hydrogenation, showing excellent catalytic performance and durability. The doping of potassium effectively weakened the adsorption of ethylene, improved ethylene selectivity, and lowered the barriers of hydrogen activation and transfer reactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)