Article
Chemistry, Multidisciplinary
Duan-Chao Wang, Hou-Yong Yu, Zhaofeng Ouyang, Dongming Qi, Ying Zhou, Anqi Ju, Ziheng Li, Yiwen Cao
Summary: In this study, composite fibers with chain-ring structures were prepared by connecting cellulose nanofiber (CNF) and multi-walled carbon nanotubes (MWCNT) covalently, solving the problems of MWCNT aerogel formation and phase separation during compounding. The resulting aerogels exhibited mechanical resilience and chain-ring fibers, enabling high compression resistance and application in flexible supercapacitors and sensors.
Article
Chemistry, Multidisciplinary
Thomas R. Kuech, Nasim Ganji, Caroline Anastasia, Marco D. Torelli, Eric S. Melby, Arielle C. Mensch, Emily R. Caudill, Ralf Zimmermann, Robert J. Hamers, Joel A. Pedersen
Summary: The interactions between cationic polymer-wrapped diamond nanoparticles (PAH-DNPs) and lipid bilayers are influenced by the phospholipid composition and surface charge. Electrostatic attractions and repulsions play key roles in the initial attachment and final extent of nanoparticle adhesion. The formation of a lipid corona on PAH-DNPs reduces the effective charge density and affects the adhesion extent. The inclusion of charged phospholipids decreases the attachment efficiency and extent by reducing the electrostatic attraction between PAH-DNPs and the bilayers.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Engineering, Chemical
A. Poli, R. Sfeir, A. Ferreira Santos, M. Jacob, C. Batiot-Dupeyrat, P. Baldony-Andrey, B. Teychene
Summary: Produced water is the highest liquid stream generated by the petroleum industry, containing small amounts of emulsified oil. Research shows that SiC membrane material and CNTs synthesis have a positive impact on water treatment, but fouling phenomena hinder their development.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Libin Han, Rui Qu, Dongsheng Chen, Lei Liu, Huidi Xu, Zhuanzhuan Zhang, Yuze Zhao, Xiaofeng Song
Summary: Flexible hydrogel sensors with excellent tensile strength, resistance to freezing, and solvent volatility can stably track both large and subtle human motions.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jian Sheng, Zhen Han, Guodong Jia, Sheng Zhu, Yifan Xu, Xinrui Zhang, Yixi Yao, Yan Li
Summary: This work reports the preparation of a covalently bonded graphene/CNT structure using a normal chemical vapor deposition method. The graphene leaves restrict the sliding and re-stacking of CNTs, resulting in excellent anti-agglomeration properties. The covalently bonded structure and high graphitization degree significantly enhance the comprehensive properties of the hybrid material.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jian Sheng, Zhen Han, Guodong Jia, Sheng Zhu, Yifan Xu, Xinrui Zhang, Yixi Yao, Yan Li
Summary: This work synthesizes a covalently bonded graphene/CNT (G/CNT) structure by chemical vapor deposition, in which grapheme sheets are grown on the defects of CNT sidewalls. The resulting branch-leaf structure of G/CNT exhibits excellent anti-agglomeration properties and enhanced comprehensive properties such as large specific surface area, excellent thermal stability, and high electrical conductivity. Furthermore, the microwave absorption properties of G/CNT are significantly improved compared to CNTs, making this hybrid material a potential candidate for high-performance applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Composites
Xu Li, Bin Wu, Peng Chen, Ru Xia, Jiasheng Qian
Summary: The miniaturization of integrated circuits has led to the rapid development of thermal conductive composites based on polymer carbon nanotubes (CNTs). However, the disordered arrangement structure and interfacial thermal resistance of CNTs pose significant challenges to their application. This study proposes a solution through freeze-casting orientation configuration and the growth of new CNTs in situ, creating a hierarchical structure in epoxy resin (EP)-based composites. The resulting composites exhibit directional networks of interlinked CNTs and significantly enhanced thermal conductivity compared to pure EP. Non-equilibrium molecular dynamics (NEMD) simulations further support the advantage of using covalent bonding to connect CNTs. These findings contribute to the rational design of polymer-based CNT thermal conductive composites.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Manuel Vazquez Sulleiro, Aysegul Develioglu, Ramiro Quiros-Ovies, Lucia Martin-Perez, Natalia Martin Sabanes, Maria Lourdes Gonzalez-Juarez, I. Jennifer Gomez, Mariano Vera-Hidalgo, Victor Sebastian, Jesus Santamaria, Enrique Burzuri, Emilio M. Perez
Summary: The research successfully achieved the coupling of 2H-MoS2 and graphene in field-effect transistors through covalent grafting, providing the possibility of functionalizing multiple devices.
Article
Chemistry, Physical
Matias Blanco, Sara Cembellin, Stefano Agnoli, Jose Aleman
Summary: A half-sandwich ruthenium-p-cymene organometallic complex has been immobilized on the sidewalls of Single Walled Carbon Nanotubes (SWNT) through a stepwise covalent chemistry protocol, enabling efficient transfer hydrogenation of ketones to alcohols. The hybrid material shows high activity, recyclability and improved performance compared to related homogeneous catalysts due to the covalent bond between the metal and the material, achieving high turnover frequencies.
Article
Materials Science, Multidisciplinary
Yulin Wang, Zhibo Luo, Ji Zhou, Xueying Fan, Jie Zhang, Yuncan Jia, Shang Chen, Xiaodong Meng, Christopher W. Bielawski, Jianxin Geng
Summary: This study proposes a method of covalently grafting sulfur-containing polymers to carbon nanotubes as a solution to the problems associated with sulfur cathodes in Li-S batteries. The resulting composite material effectively establishes a porous network and facilitates electron transport, suppressing the shuttle effect of polysulfides. Compared to cells prepared from elemental sulfur, the devices containing the composite material exhibit improved specific capacity and suppressed capacity fading rate.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Katarina Mosnackova, Miroslav Mrlik, Matej Micusik, Angela Kleinova, Vlasta Sasinkova, Anton Popelka, Alena Opalkova Siskova, Peter Kasak, Claudia L. Dworak, Jaroslav Mosnacek
Summary: The study demonstrates that MWCNTs-PHEMA-g-PCL hybrid material containing 24 wt % MWCNTs exhibits the properties of thermoplastic elastomers, while retaining their elastic properties at least up to 100 degrees C. It shows excellent, fully reversible, repeatable, and fast photo-mechanical actuation behavior.
Article
Polymer Science
Alexis Salas, Andres Felipe Jaramillo, Daniel Andres Palacio, Andres Diaz-Gomez, David Rojas, Carlos Medina, Eduardo Perez-Tijerina, Francisco Solis-Pomar, Manuel Francisco Melendrez
Summary: This study confirmed through experiments the surface modification of zinc oxide nanoparticles with 3-glycidyloxy-propyl-trimethoxysilane, enhancing the mechanical bending properties of the hybrid materials while causing a slight decrease in ductility. Results for compressive strength were mixed, but overall properties were maintained. Observations on thermal properties indicated that the inorganic reinforcement conferred resistance to degradation on the base material.
Article
Medicine, Research & Experimental
Kaixue Zhang, Fukui Shen, Wei Lei, Yanqi Han, Xiaoyao Ma, Yujie Lu, Yuanyuan Hou, Wenjuan Liu, Min Jiang, Tiejun Zhang, Gang Bai
Summary: This study found that a new therapy for improving blood circulation can inhibit the abnormal increase of catecholamines and phosphatidylcholine levels in the blood, reducing the risk of cardiovascular diseases. The mechanism of action of this therapy is to inhibit cholesterol synthesis, thereby reducing the levels of total cholesterol and triglycerides in the blood and improving lipid metabolism disorders.
BIOMEDICINE & PHARMACOTHERAPY
(2023)
Article
Energy & Fuels
Yayun Tang, Zhaowei Zeng, Lei Yi, Shaoshan Zhu, Xiang Li, Hanyang Li, Ning Lv, Yuexin Xu, Qiuyitong Zhang, Yadong Wang
Summary: Transition-metal/heteroatom-doped carbon exhibits exceptional ORR catalytic activity in alkaline electrolytes. Phosphorus-rich porous polyaniline gel is used as a precursor to synthesize high-dispersion iron-doped graphite catalysts. Fe-N/P/C-850, synthesized at a heat treatment temperature of 850 degrees Celsius, demonstrates the highest ORR activity and electrochemical stability.
Article
Chemistry, Physical
Xingshuai Ji, Baogang Xu, Hongyu Zhang, Xiao Zhang, Ping Yang
Summary: This study successfully developed a new composite material for supercapacitors and water splitting catalysts, with high performance and potential.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)