CHEMOSPHERE
·
2017
·
IF 4.208
Jing Wang,Shuo Chen,Xie Quan,Hongtao Yu
Metal-free carbon materials have been presented to be potential alternatives to metal-based catalysts for heterogeneous catalytic ozonation , yet the catalytic performance still needs to be enhanced. Doping carbon with non-metallic heteroatoms (e.g., N, B, and F) could alter the electronic structure and electrochemical properties of original carbon materials, has been considered to be an effective method for improving the catalytic activity of carbon materials. Herein, fluorine-doped carbon nanotubes (F-CNTs) were synthesized via a facile method and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy . The as-synthesized F-CNTs exhibited notably enhanced catalytic activity towards catalytic ozonation for the degradation of organic pollutants. The oxalic acid removal efficiency of optimized F-CNTs was approximately two times as much as that of pristine CNTs, and even exceeded those of four conventional metal-based catalysts (ZnO, Al 2 O 3 , Fe 2 O 3 , and MnO 2 ). The XPS and Raman studies confirmed that the covalent C F bonds were formed at the sp 3 C sites instead of sp 2 C sites on CNTs, not only resulting in high positive charge density of C atoms adjacent to F atoms, but remaining the delocalized π-system with intact carbon structure of F-CNTs, which then favored the conversion of ozone molecules (O 3 ) into reactive oxygen species (ROS) and contributed to the high oxalic acid removal efficiency. Furthermore, electron spin resonance (ESR) studies revealed that superoxide radicals (O 2 − ) and singlet oxygen ( 1 O 2 ) might be the dominant ROS that responsible for the degradation of oxalic acid in these catalytic systems.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2021
·
IF 5.221
Hu Qin,Qin Jie,Wang Xiao-Feng,Ran Guang-Ying,Wang Qiang,Liu Guang-Xiang,Ma Jian-Ping,Ge Jing-Yuan,Wang Hai-Ying
A non-enzymatic electrochemical sensor for glucose detection is executed by using a conductive metal–organic framework (MOF) Cu-MOF, which is built from the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand and copper acetate by hydrothermal reaction. The Cu-MOF demonstrates superior electrocatalytic activity for glucose oxidation under alkaline pH conditions. As an excellent non-enzymatic sensor, the Cu-MOF grown on Cu foam (Cu-MOF/CF) displays an ultra-low detection limit of 0.076 μM through a wide concentration range (0.001–0.95 mM) and a strong sensitivity of 30,030 mA μM−1 cm−2. Overall, the Cu-MOF/CF exhibits a low detection limit, high selectivity, excellent stability, fast response time, and good practical application feasibility for glucose detection and can promote the development of MOF materials in the field of electrochemical sensors.
研究领域:
材料科学
·
电化学传感器
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2025
·
IF 9.8
Changting Chen,Yu Liu,Jianguo Ma,Shujuan Liu,Jianqiang Luo,Xiaolan Tong,Xuejiao Peng
The effective separation and recovery of uranium holds significant strategic importance for the sustainable management of radioactive wastewater. In view of the limitations of traditional adsorption techniques, a novel uranium extraction system was constructed in this study using a coupled electrochemical-adsorption approach. An innovative glyphosate-functionalized chitosan composite electrode (GP-CS@CF) was developed and integrated with a galvanic cell-assisted (GCA) electrochemical system to achieve high-efficiency uranium removal. Experimental results demonstrated that GP-CS@CF exhibited an excellent adsorption capacity, and the GCA method achieved a uranium extraction rate nearly seven times that of traditional physicochemical adsorption methods, with a maximum adsorption capacity of 4860 mg/g. Moreover, GP-CS@CF exhibited excellent anti-interference properties and regeneration ability. Mechanistic analysis suggested that the enhanced uranium removal was attributed to synergistic effects of three pathways: adsorption by GP-CS@CF, electrochemical reduction via the GCA, and O 2 -mediated oxidation. This study offers a cost-effective and environmentally sustainable strategy for uranium extraction, which has significant potential for practical application.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Bo Gu,Xinghua Zhu,Guohong Pu,Fangfang He,Peng Wang,Guansong He,Ren He,Kai Zhang,Wenbin Yang
In this work, anilino-methyl-triethoxysilane (AMTS) was used as a modifier to secondary modified carbon fiber (CF). Firstly, the CF was pretreated by immersing it in a dopamine (DA) solution so that a certain amount of polydopamine (PDA) particles were attached to its surface to obtain modified carbon fiber (m-CF). Next, m-CF was immersed in a solution of ethanol with AMTS. m-CF@AMTS was obtained by hydrolytic bonding of AMTS to the surface of m-CF. Finally, a silicone rubber/carbon fiber composite (SR/m-CF@AMTS) was prepared from m-CF@AMTS and silicone rubber (SR) matrix. Meanwhile, γ-Aminopropyltriethoxysilane (KH550), 3-Glycidoxypropyltrimethoxysilane (KH560), and 3-(Trimethoxysily)proply methacrylate (KH570) were used as controls for the AMTS secondary modified carbon fiber. The resultant of transverse fiber bundle tests (TFBT) shows that the SR/m-CF@AMTS compared with untreated silicone rubber/carbon fiber (SR/CF) and dopamine (DA) modified silicone rubber/carbon fiber (SR/m-CF) composites, the TFBT strength of SR/m-CF@AMTS was improved by 135.5 % and 51.6 %, and the elongation at break was improved by 177.9 % and 63.8 %, respectively. The above results show that secondary modification of CF by AMTS is a successful and efficient method. Secondary modification of CF by AMTS was first proposed and applied to the experiment.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2021
·
IF 8.528
Hanxiong Lyu,Naiyu Jiang,Jiqiang Hu,Yingze Li,Nan Zhou,Dongxing Zhang
The weak interfacial bonding between fiber and matrix needs to be improved for obtaining good mechanical properties of carbon fiber/polyetheretherketone (CF/PEEK) composites due to the inert nature of both components. Organic sizing is a typical interface improvement method, but it is harmful to both the human and local environment. Here, a two-step process is proposed to modify PEEK for preparing an environmentally friendly water-based sizing agent, involving taking the ketone reduction via NaBH 4 and then an esterification reaction with phosphoric acid . This PEEK derivative has good thermal stability , and its dispersion in water is stable for one month. It improves the interface between CF and PEEK by increasing the wettability and surface roughness of CFs, ultimately enhancing the mechanical properties of composites. The two-step process of fabricating the PEEK derivative may have potentials in the industrial application of the polyaryletherketone family.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Yinchuan Pu,Zhenyu Ma,Li Liu,Yongping Bai,Yudong Huang
It was a major challenge to acquire CFRPs with both great toughness and strength . Inspired by spider silk , a biomaterial with impressive toughness, we discovered that introducing highly dense weak hydrogen bonds at the interface can be applied to CFRPs toughening. Highly dense weak hydrogen bonds between the branched polyethyleneimine (PEI) and metal-organic frameworks UIO-66 at the interface of CFRPs were formed by the “bridge” of hydroxyl-rich poly (vinyl alcohol) (PVA). The break of those hydrogen bonds could dissipate substantial energy and disperse the stress, the impact toughness of CFRPs with the “PEI-PVA-UIO-66” interlayer was up to 99.53 kJ/m 2 . Compared with composites reinforced by CFs modified with UIO-66 by chemically grafting or by physically absorbing without PVA, the impact toughness of CF-PVA-MOF/EP improved by 45% and 33%, respectively. This means that the highly dense weak hydrogen bonds have superiority for CFRPs toughening. Meanwhile, the interfacial shear strength (100.85 MPa) and interlaminar shear strength (102.44 MPa) of CFRPs were realized by the innovative designed interfacial structure.
研究领域:
材料科学
·
复合材料
·
机械工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Junguo Li,Chenhan Zhao,Feng Jiang,Shiquan Zhang,Suohui Yang,Qianqian Xiang,Meijuan Li,Jian zhang,Qiang Shen
Ceramizable carbon fiber/boron-modified phenolic resin (C f /BPR) composites are cost-effective and suitable for fabricating large-scale components, making them vital for thermal protection systems in aerospace vehicles. However, their thermal resistance requires further improvement. This study investigates the modification of C f /BPR composites using ZrSi 2 , Al, and mica to enhance their thermal resistance. High-temperature static oxidation and oxyacetylene ablation tests are conducted to evaluate their high-temperature performance. The role of each filler on oxidation resistance is discussed. The results reveal that when ZrSi 2 is added at 33.75 phr, Al at 3.75 phr, and mica at 5 phr, the prepared composite exhibits a flexural strength of 56 MPa after 20 min of static oxidation at 1600 °C, with excellent protection of the carbon fibers. After oxidation at 1670 °C, the flexural strength remains at 45 MPa, despite some degree of carbon fiber ablation.
研究领域:
航空航天材料
·
材料科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Weijia Li,Lingchu Huang,Huaiyuan Sun,Bin Wang,Qi Lu,Xishuang Liang,Fangmeng Liu,Fengmin Liu,Peng Sun,Geyu Lu
The development of high-performance H 2 gas sensors is a challenge for safe operation in the high-risk area of flammable and explosive. In this work, Pd/CF is used as a sensing material in fuel cell type sensors and the effect of Pd loading (5 wt%, 10 wt% and 20 wt%) on the sensors’ performance is investigated. The sensor based on Pd(10 wt%)/CF shows the best sensing performance which can be attributed to both the optimal balance of Pd content and utilization to produce the most active sites for the catalytic reaction and the highest conductivity of the membrane electrode assembly (MEA). These are confirmed by EDS images, cyclic voltammetry curve and complex impedance curves. The optimal sensor has a response value of about − 60 μA to 5000 ppm H 2 and a sensitivity of − 0.0131 μA/ppm to 200–10000 ppm H 2 at room temperature (25 °C). In addition, with the advantages of no heating, no external voltage, simple fabrication process, high linearity, good repeatability and long-term stability, the sensor in this work possesses very broad development prospect.
✓ 已验证
DOI
高影响因子
POLYMER COMPOSITES
·
2026
·
IF 4.7
Qingchao Li,Qianli Fang,Xinyue Ma,Mudasir Ahmad,Wen Liu,Pengfei Song,Mehraj ud-din Naik,Guoqing Huang,Chuncai Yang
Interlaminar shear strength (ILSS) and compressive strength are critical performance indicators for carbon fiber (CF) reinforced epoxy resin composites (CF/EP) in engineering applications. In this study, methyl tetrahydrophthalic anhydride (MTHPA) and tris(dimethylaminomethyl)phenol (DMP-30) are used as the curing agent and catalyst, respectively, while amino-terminated liquid nitrile rubber (ATBN) is served as the toughening agent. In parallel, an interpenetrating polymer network (IPN) derived from NCO-terminated oligomers is introduced to synergistically enhance ILSS, compressive strength, and flexural strength. DMP-30 regulates the curing mechanism of epoxy resin by controlling the reaction between hydroxyl and epoxy groups, thereby tuning the crosslinking density in the EP/MTHPA/DMP-30 matrix. ATBN improves the toughness of epoxy resin through a chemical reaction between its amino groups and the epoxy matrix. Furthermore, NCO-terminated oligomers are incorporated into the ATBN-toughened EP/MTHPA/DMP-30 matrix, forming an IPN-modified composite via selective reaction between NCO groups and hydroxyl groups in the matrix. As a result of this multi-dimensional optimization strategy, the composites achieved a maximum ILSS of 101.72 MPa, representing a 47.29% improvement, and a maximum compressive strength of 808.12 MPa, corresponding to a 71.84% increase. Highlights ATBN/EP and NCO-oligomer were synthesized for enhanced performance. ILSS improved by 47.29% and compressive strength by 71.84% via toughening. Toughness of CF/EP composites is vital for aerospace structural applications. Crosslink density directly influences compressive strength in CF/EP systems. Multidimensional toughness mechanisms enhance mechanical properties of CF/EP composites.
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2021
·
IF 8.528
Hanxiong Lyu,Naiyu Jiang,Yingze Li,Dongxing Zhang
The weak interfacial adhesion caused by the low wettability of carbon fiber (CF) and inert polyetheretherketone (PEEK) hinders the great application potential of CF/PEEK composites. In this study, the interface between CF and PEEK was modified by coating hydroxylated PEEK grafted onto multi-walled carbon nanotubes (M-HPEEK). Modified CFs by M-HPEEK sizing had rougher surfaces with more polar groups, showing decreased contact angle and increased surface energy. The wettability of these CFs was enhanced, beneficial to PEEK infiltration and physical adhesion improvement. As a result, the interlaminar shear strength , flexural strength , and flexural modulus of modified CF/PEEK composites were increased by 73.0% (84.7 MPa), 163.2% (906.2 MPa), and 84.8% (58.4 GPa), respectively. An improved interface with stress transferring was proved by the interface debonding failure changed to fiber crack and resin yield. M-HPEEK sizing is considered as a promising modification method to optimize the interface performance of composites.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
DOI
高影响因子
JOURNAL OF NUCLEAR MATERIALS
·
2019
·
IF 2.547
Ji Wang,Kai Wang,Xueliang Pei,Mian Li,Qin Yuan,Yabin Zhu,Yitao Yang,Chonghong Zhang,Liu He,Shiyu Du,Zhifang Chai,Zhengren Huang,Qing Huang
Interphase failures of traditional chemical vapor infiltration (CVI) synthesized SiC composites can often be found under irradiation conditions. Exploring new interphases and the corresponding synthesized method to improve the composites performance in irradiation environments are therefore important. In this study, molten-salt method was introduced to fabricate well-distributed TiC/Ti 2 AlC coating on carbon fiber (C f ) fabric, and the coated C f fabric was subsequently used to synthesize SiC composites with layered carbides interphases via PIP process. SEM and TEM datum indicate that the interphases are well integrated with the carbon fibers and matrix. Irradiation behavior of the C f /SiC composite was then studied by a series doses of Si ion irradiation at 300 °C. SPM shows that the irradiation induced swelling of interphases and matrix increase with the increasing irradiation doses, while the carbon fibers shrink along the axial direction after the irradiation and the shrinkage of the fibers increases with the irradiation doses. TEM investigation shows that no cracking and debonding of the interphase were detected even after the highest irradiation dose (∼20 dpa). The microstructure of the interphase remains the same as the pristine sample. Above results might prove that the interphases synthesized by molten-salt method has a good resistance to irradiation induced debonding. This pioneering work shows a new approach to fabricate the interphases and explore new fiber/matrix interphase designs for fission/fusion applications.
研究领域:
材料科学
·
核能工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2021
·
IF 7.664
Zhihui Hu,Yedong Peng,Diqing Guo,Wenhao Li,Tiancheng He,Zhengyu Bao,Jianmei Xu
Carbon fibers (CF) have triggered extensive interest with the progress of multifarious marine electric field sensor devices owing largely to their high flexibility, good conductivity and exceptional chemical/thermal stability. Herein, flexible Ag/sliver nanowires (AgNWs)/CF (Ag-AgNWs-CF) electrodes with extremely tiny potential difference drift of 67.22 μV/24 h have been successfully fabricated by a facile alcohol-thermal method with a reaction temperature of 170℃ for 120 min. The conductive AgNWs was introduced to the CF as a coating material. The AgNWs with three-dimensional (3D) network and silver particles accounts for superior areal specific capacitance and low Tafel slope for the composite electrodes (CEs). Using such flexible Ag-AgNWs-CF as a marine electric field sensor, the excellent self-noise was obtained, which signifies prospective ability to respond to weak signals.
研究领域:
材料科学
·
海洋工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）