SYNTHETIC METALS
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2024
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IF 4
Mengjie Li,Wei Jiang,Yun Lin,Changhui Li,Xue Liu,Qiongzhen Liu,Wenwen Wang,Liyan Yang,Yuedan Wang,Dong Wang
Electrochromic fabric was formed by interfacial polymerization of polyaniline (PANI) and multi-walled carbon nanotubes (MWCNTs) on the surface of cotton cloth. The morphology and properties of the composite films were controlled by changing the content of multi-walled carbon nanotubes. The electrochromic properties of the fabric and its application in the field of near-infrared thermal shielding were studied. It is found that the electrochromic fabrics with MWCNTs have better electrochemical and color-changing properties. Electrochromic fabrics achieve color changes from light yellow to yellow-green to dark green in the voltage range of −1.0–1.2 V, and maintain a fast color switching time (2.15 s for coloring, 1.89 s for bleaching) after 600 cycles. The reflection contrast (ΔR) at 500 nm is 23.01 %. Moreover, the electrochromic devices are assembled with fabrics. The device has obvious discoloration and good bending stability. In addition, the thermal shielding is realized by using their reflection characteristics in the visual-near-infrared region. The results show that the electrochromic device has a low surface temperature at different environmental condition, and the thermal reduction from the original state to the bleached state is up to 3.8 ° C, indicating the potential application of the device in thermal regulation.
研究领域:
材料科学
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电化学
·
纺织工程
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高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
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2024
·
IF 4.7
Liu Peng,Bi Yuanyuan,Gu Yaxin,Li Xiangyu,Mao Junpeng,Shan Xiantong,Cao Ji
In this study, a novel hydrogel nanofiltration (NF) membrane is developed through the coating-crosslinking method by synergistically utilizing multi-walled carbon nanotubes (MWCNTs) and titanium dioxide (TiO 2 ) into the hydrogel coatings of sodium alginate (SA) and polyvinyl alcohol (PVA) on a porous polyvinylidene fluoride (PVDF) matrix membrane. The experimental findings demonstrate that the P-MT@SA-PVA-PVDF hydrogel NF membrane displays outstanding separation performance, hydrophilicity, and antifouling properties. When the ratio of MWCNTs to PVP is kept at 1:4, the pure water flux of the prepared hydrogel NF membrane reaches 226.2 L/(m 2 ˑh). The rejection rates for Coomassie brilliant blue, Congo red, and Methylene blue are 96.3%, 95.8%, and 92.1%, respectively. Moreover, the total fouling rate of the membrane is merely 28.7%, and the flux recovery rate can attain 93.1%. The remarkable hydrophilicity and highly efficient rejection rates for dyes indicate broad application prospects of MWCNTs-modified hydrogel NF membranes in the field of printing and dyeing wastewater treatment.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 10
·16032-16039
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IF 4.3
Shuai Wang,Fei Liu,Ragini Singh,Bingyuan Zhang,Santosh Kumar
Alkaline phosphatase (ALP) is a phosphomonoesterase used to hydrolyze biologically active molecules containing phosphate ester groups. Many tissues, such as bone, liver, and kidney, contain ALP; 2,4-dichlorophenoxyacetic acid (2,4-D) inhibits the reaction of ALP with phenyl phosphate. Based on the localized surface plasmon resonance (LSPR) phenomenon, a WaveFlex biosensor is designed and manufactured using multiwalled carbon nanotubes (MWCNTs)/cerium dioxide nanorods (CeO2-NRs)-immobilized multitapered fiber for detecting pesticide residues. Specifically, first, gold nanoparticles (AuNPs) are attached to the surface of the sensing region of the probe, which effectively stimulates the LSPR phenomenon. Second, MWCNTs and CeO2-NRs are fixed to the surface of the sensing region of the probe, and finally, ALP is uniformly used at a concentration of 300 IU/L. In this experiment, the authors tested the stability, repeatability, pH effect, and selectivity of the biosensor and found that it exhibits high sensitivity, good stability, and strong usability in the linear range of 0–8 mg/L, meeting the requirements for pesticide residue detection in agricultural food crops.
研究领域:
生物化学
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农业科学
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材料科学
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mingyang Gao,Bohang Zhang,Yutian Ma,Xinyuan Du,Chunxue Zhai,Zhiyong Zhang,Wu Zhao
Simultaneous monitoring of temperature and gas concentration is crucial in many practical scenarios, as these two parameters are often strongly coupled. However, conventional sensing platforms typically rely on multiple single-function sensors, increasing system complexity and limiting their applicability. In this work, we first develop a rigid multi-wall carbon nanotubes (MWCNTs)‑indium selenide (InSe) sensor with excellent dual-mode temperature and nitrogen dioxide (NO 2 ) sensing capabilities, achieving high thermal sensitivity and ppb-level gas detection. Building on this foundation, a wearable version of the sensor is fabricated, enabling robust performance under mechanical deformation. Finally, the flexible device is integrated into a compact system featuring two independent sensing channels, real-time display, and threshold-triggered alarms. This study demonstrates a simple yet powerful strategy to realize multifunctional environmental sensing with a single sensor unit and highlights its strong potential for next-generation wearable electronics and intelligent environmental monitoring.
研究领域:
材料科学
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传感器与仪器
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可穿戴电子
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环境监测
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纳米技术
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高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2017
·Vol. 218
·期 23
·1700357
·
IF 2.5
Zijian Wu,Sheng Gao,Lei Chen,Dawei Jiang,Qian Shao,Bing Zhang,Zhaohui Zhai,Chen Wang,Min Zhao,Yingyi Ma,Xiaohong Zhang,Ling Weng,Mingyan Zhang,Zhanhu Guo
With unique physicochemical properties, multiwalled carbon nanotubes (MWCNTs) have enabled major achievement in polymer composites as reinforcing fillers. Nevertheless, high conductivity of raw MWCNTs (R-MWCNTs) limits their wider applications in certain fields, which require outstanding thermal conductivity, mechanical, and insulation properties simultaneously. In this article, silica (SiO 2 ) coated MWCNTs core–shell hybrids (SiO 2 @MWCNTs) and organically modified montmorillonite (O-MMT) are employed to modify epoxy (EP) simultaneously. The epoxy-clay system is cured by using anhydride curing agent. The impact strength and flexural strength of final nanocomposites are greatly improved. Meanwhile, the final composites remain in high electrical insulation. Compared to mixed acid treated MWCNTs (C-MWCNTs) (0.5 wt%)/EP nanocomposites, the volume resistivity of the O-MMT(4 wt%)/SiO 2 @MWCNTs(0.5 wt%)/EP nanocomposites increases more than six orders of magnitude. Synergistic toughening effect occurs when using core–shell SiO 2 @MWCNTs and MMT bifillers. The electrical insulation is attributed to the suppressed electron transport effect by SiO 2 layer on the CNTs surface, and the blocked conductive CNTs network by the buried 2D structural O-MMT. The SiO 2 @MWCNTs core–shell hybrids also benefit to decrease the dielectric constant and dielectric loss of CNTs/EP composites. This work provides guidance to using CNTs as reinforcement fillers to toughen the polymers for electric insulating applications.
研究领域:
材料科学
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电气工程
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高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2016
·Vol. 21
·期 5
·1219-1228
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IF 2.327
Xing Ruimin,Yang Haitang,Li Shengnan,Yang Jinghe,Zhao Xiaoyu,Wang Qinglong,Liu Shanhu,Liu Xiuhua
Fabrication of multicomponent nanocomposites as electrode-modified materials is an effective strategy to design highly active electrochemical sensors. Here, we present a facile strategy to fabricate the palladium phthalocyanine-multiwalled carbon nanotube (PdPc-MWCNTs) nanocomposite for the sensitive detection of rutin. Results showed that the prepared nanocomposites exhibited excellent electrocatalytic activity toward rutin due to the synergetic effects of PdPc and MWCNTs (excellent electric conductivity and catalytic activity) and the homogeneous dispersibility of Nafion. Under the optimized conditions, the developed sensor exhibited a linear response range from 0.10 to 51 μM for rutin with a low detectable limit of 75 nM and a fast response less than 3.0 s. The proposed method might offer a possibility for electrochemical analysis of rutin in Chinese medical analysis or serum monitoring owing to its low cost, simplicity, high sensitivity, good stability, and few interferences against common coexisting ions in real samples.
研究领域:
分析化学
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材料科学
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药物分析
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DOI
高影响因子
POLYMER TESTING
·
2023
·
IF 5.1
Hengqian Jin,Shufei Wei,Xinping Zhang,Huarong Nie,Aihua He
Microwave-absorbing materials with heterostructure represent a major challenge and opportunity in enabling strong microwave absorption over a wide bandwidth. Here, novel hydrophilic multi-heterostructure composites (Mag@J/MWCNT) were fabricated by combining nanostructured Fe 3 O 4 covered snowman-like Janus nanoparticles (Mag@J) with MWCNTs for enhanced microwave absorption. The good hydrophilicity and low reflection loss (RL) demonstrated the potential application of Mag@J as an effective microwave absorbent with environmentally friendly processibility. Further, the multi-heterostructure composites constructed by Mag@J (with 77.73 wt% Fe 3 O 4 ) and MWCNTs exhibited strong absorption intensity (RL = −38.98 dB), wide bandwidth (6.04–8.23 GHz), and low thickness (3.5 mm). The excellent microwave absorption properties were attributed to the strong dielectric loss, magnetic loss, and good impedance matching of different components in multi-heterostructure composites, as well as multiple reflection absorption of microwave in the hollow sphere of Janus particle. Therefore, this work provides important inspiration for multi-heterostructure composites to achieve potential applications as electromagnetic wave absorbing materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shanshan Zhang,Guizhen Liu,Sihai Lv,YingLi Zhu,Pingan Chen,Hui Luo,Xiangcheng Li,Fu Chen
Magnetic carbon-based microwave absorption materials (MAMs) derived from metal-organic frameworks (MOFs) have been regarded as promising candidates for addressing the electromagnetic pollution. The construction of magnetic carbon-based MAMs derived from MOFs with ferromagnetic centers (Fe, Co, Ni etc.) and their composites has become a mainstream in recent years. However, MOFs with non-magnetic centers have received less attentions due to the challenges in achieving magnetic-dielectric synergistic effect and proper impedance matching in their derivatives. In this work, a facile metal-polyphenol network coating strategy has been proposed to facilitate the construction of magnetic MWCNTs decorated TiN 0.9 /NC absorber derived from non-magnetic MIL-125(Ti). The regulation effect of carbothermal temperature on magnetism, defect density, graphitization degree as well as electromagnetic parameters of absorbers have been systematically investigated. The obtained composites exhibit outstanding microwave absorption performance due to the magnetic-dielectric synergistic effect and improved impedance matching. The minimum reflection loss reaches −42.55 dB at 1.91 mm and the effective absorption bandwidth reaches as wide as 4.6 GHz with an ultra-thin thickness of only 1.38 mm. It is believed that this study provides a new way to construct efficient magnetic carbon-based MAMs with non-magnetic metal-based MOFs and a meaningful exploration for the preparation of ultra-thin absorbers.
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高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Zhiqiang Qian,Zhong Liu,Shidong Wang,XiuShen Ye,Zhijian Wu
Inspiration from nature provides the combination of micro-nano particles and low surface energy materials, a spraying method has been employed to prepare SiO 2 @MWCNTs@PFOTES superhydrophobic coatings on magnesium alloy, which can enhance corrosion resistance and coating stability. The prepared coating is composed of silicon dioxide (SiO 2 ) particles obtained by hydrolysis and condensation reaction of ethyl orthosilicate (TEOS), and carboxylate modified carbon nanotubes (MWCNTs) as rough structure, and 1H, 1H, 2H, 2H-Perfluorooctyltriethoxysilane (PFOTES) as the fluorine silane coupling agent. The coating’s composition is determined using field emission scanning electron microscopy (FESEM) and Fourier transform infrared (FTIR) spectroscopy. The polarization curve and electrochemical impedance spectroscopy (EIS) are used to investigate the corrosion resistance of the prepared superhydrophobic surface. Through the salt spray test, the salt resistance of the coating is further discussed. The corrosion current density after the coating is more than four orders of magnitude lower than that of bare magnesium alloy AZ31B, and the water contact angle increases from ~32° to more than 162°. The mechanical, chemical and environmental stability of the superhydrophobic coating has been proved through wear test, immersion test and salt spray test.
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高影响因子
Chemosensors
·
2023
·Vol. 11
·期 3
·171
·
IF 4.2
Xin Meng,Bao-Lin Xiao,Xin-Yan Song,Xin-Xin Ma,Yang-Yang Li,Lin-Lin Ma,Yu-Jie Chen,Yu-Ying Li,Ke-Xin Xu,Jian-She Wei,Tao Hong,Ali Akbar Moosavi-Movahedi,Jun Hong
Rutin is a natural antioxidant flavonoid compound with anti-inflammatory, antioxidant, and antiviral effects that is used to prepare drugs with wide application in clinical treatment. Therefore, the quantitative detection of rutin has important practical significance. In this work, a novel electrochemical sensor based on glassy carbon electrodes (GCEs) modified with sodium carboxymethylcellulose (CMC), multi-walled carbon nanotubes (MWCNTs), and 1-butyl-3-methylimid (ionic liquid, IL) was developed for the super-sensitive detection of the flavonoid rutin. The properties of these modified materials were analyzed by transmission electron microscope (TEM), cyclic voltammograms (CVs), and electrochemical-impedance spectroscopy (EIS). CMC was used to disperse MWCNTs to further enhance their hydrophilicity and biocompatibility. The modified MWCNTs improved the sensitivity of rutin detection. The square-wave voltammetry (SWV) technique showed that the linear range of rutin concentration determination was 0.01 μM to 1 µM and 1 µM to 10 µM. The minimum concentration detection of rutin was 0.83 nM and 6.6 nM, respectively. The proposed sensor presented good selectivity for rutin and successfully analyzed rutin content in the pharmaceutical rutin tablets. These results are consistent with those measured by ultra-high-performance liquid chromatography (UHPLC). Therefore, this sensor has latent application value in the analysis of rutin in food and drug tablets and nutraceutical samples.Keywords:sensor;multi-walled carbon nanotubes;ionic liquid;sodium carboxymethylcellulose;rutin
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高影响因子
MOLECULES
·
2023
·Vol. 28
·期 8
·3398
·
IF 4.6
Na Li,Hongyue Zhang,Min Cui,Jujie Ren,Jingru Huang,Bao Sun,Haiyan Zhao,Cong Zhang
In this study, the preparation of covalent polyoxometalate organic frameworks (CPOFs) is introduced using the idea of polyoxometalate and covalent organic frameworks. Firstly, the prepared polyoxometalate was functionalized with an amine group (NH2-POM-NH2), and then the CPOFs were prepared by a solvothermal Schiff base reaction with NH2-POM-NH2and 2,4,6-trihydroxybenzene-1,3,5-tricarbaldehyde (Tp) as monomers. After the incorporation of PtNPs and MWCNTs into the CPOFs material, the PtNPs-CPOFs-MWCNTs nanocomposites, which possess excellent catalytic activity and electrical conductivity, were formed and utilized as new electrode materials for the electrochemical thymol sensors. The obtained PtNPs-CPOFs-MWCNTs composite exhibits excellent activity toward thymol, which is attributable to its large special surface area, good conductivity and the synergistic catalysis of each component. Under optimal experimental conditions, the sensor presented a good electrochemical response to thymol. The sensor shows two good linear relationships between the current and thymol concentration in the range of 2–65 μM (R2= 0.996) and 65–810 μM (R2= 0.997), with the corresponding sensitivity of 72.7 μA mM−1and 30.5 μA mM−1, respectively. Additionally, the limit of detection (LOD) was calculated to be 0.2 μM (S/N = 3). At the same time, the prepared thymol electrochemical sensor revealed superior stability and selectivity. The constructed PtNPs-CPOFs-MWCNT electrochemical sensor is the first example of thymol detection.Keywords:polyoxometalate;CPOFs;thymol sensor;electrochemistry
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DOI
PubMed
高影响因子
TALANTA
·
2018
·
IF 4.244
Xiaotong Li,Xiaomin Tang,Xiaojie Chen,Baohan Qu,Lihua Lu
A novel label-free and enzyme-free detection strategy has been developed for the fluorescent detection of isocarbophos (ICP) using multi-walled carbon nanotubes (MWCNTs) and G-quadruplex as the signal transducers. In this work, the split ICP aptamer were attached to a G-quadruplex motif at their respective terminals. In the presence of ICP, the split aptamers could undergo conformational change into a sandwiched-like ternary complex, which prevent them from adsorbing to the MWCNTs due to the increased steric hindrance . As a result, the fluorescence signal of the G-quadruplex probes N-methyl mesoporphyrin IX (NMM) was enhanced significantly. In the absence of ICP, the split aptamer only existed in the form of single-stranded DNA, which could be easily adsorbed by MWCNTs and resulted in a quenched fluorescence signal of NMM. The proposed strategy could selectively and sensitively detect ICP with a detection limit of 10 nM. Furthermore, we have also demonstrated the capability of this strategy in the detection of ICP in real samples from vegetable extract, indicating the potential application of this strategy in food safety issues.
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PubMed
高影响因子
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