Chemistry-An Asian Journal
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2024
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IF 3.5
Lijuan Ma,Han Wang,Jing Zang,Xinna Wang,Hao Li,Yanwei Li,Yanhui Li
The rational design of efficient, stable, low-cost non-precious metal-based electrocatalysts with enhanced oxygen reduction reaction (ORR) activity has attracted widespread attention. In this study, a novel electrocatalyst, Fe/Co-N-MWCNT, was prepared by in-situ growth of ZIF-8 and Fe/Co-Phen on multi-walled carbon nanotubes (MWCNTs), then pyrolysis under different temperature to obtain optimal one. During the pyrolysis process, the incorporation of Fe and Co facilitated the formation of metal active sites and Fe-Co alloy, thereby promoting electron transfer and enhancing the ORR activity. Compared to Pt/C (E1/2 = 0.854V, JL = 4.90 mA cm-2), Fe/Co-N-MWCNT demonstrated a comparable half-wave potential (E1/2 = 0.812V) and an enhanced limiting current density (JL = 5.37 mA cm-2). Furthermore, Fe/Co-N-MWCNT was stable and showed no significant change after 2000 cycles, with only a negative shift of 7 mV in E1/2. Ampere response testing revealed that the current decay of Fe/Co-N-MWCNT after 10000 s was only about 7.8%, while that of Pt/C was about 18.4%. Due to its excellent catalytic stability, Fe/Co-N-MWCNT was demonstrated to be an excellent candidate for rechargeable zinc-air batteries. The outstanding electrocatalytic performance of Fe/Co-N-MWCNT can be attributed to its high pyridinic nitrogen content, the unique structure and abundant metal active sites.
研究领域:
材料科学
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电化学
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能源存储与转换
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 8
·3309-3316
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IF 3.069
Wei Jin,Yanqiu Fu,Weiquan Cai
In this paper, a CuS/graphene oxide (GO)/multiwalled carbon nanotube (MWCNT) nanocomposite was prepared for the first time for ultrasensitive electrochemical non-enzymatic H2O2 detection in the alkaline environment. The morphology and microstructure of the CuS/GO/MWCNT nanocomposite were systematically characterized, in which the novel hybrid architectures of the nanoparticles, nanotubes and nanosheets are determined. As a result, the as-fabricated electrochemical sensor exhibits an excellent H2O2 amperometric response with a wide linear range from 0.45 mM to 60 mM, a low detection limit of 0.6 μM and an ultra-high sensitivity of 386 μA mM−1 cm−2. Besides, the long-term stability and outstanding reproducibility were also evaluated, suggesting the promising potential for the determination of H2O2 in practical applications.
研究领域:
材料科学
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分析化学
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DOI
高影响因子
Materials
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2022
·Vol. 15
·期 3
·929
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IF 3.748
Yawei Yang,Yan Han,Jianqiu Zhao,Wenxiu Que
Solar vapor generation through evaporation using photothermal materials is a promising candidate for seawater desalination. The Ti3C2MXene membrane has exhibited photothermal behavior in solar water evaporation. However, dense packed two-dimensional (2D) MXene membrane with high reflection loss and insufficient vapor escape channels limited its solar evaporation performance. In this work, one-dimensional (1D) multi-walled carbon nanotubes (MWCNT) were added into 2D Ti3C2nanosheets as the holder to form a 2D/1D hybrid photothermal membrane. Owing to the 2D/1D hybrid structure, more effective broadband solar absorption, water transportation and vapor escape were achieved.
研究领域:
材料科学
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能源工程
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环境科学
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DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
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2026
·Vol. 33
·期 3
·70
·
IF 3.5
Li Xinran,Xia Zheyao,Zheng Yuansheng,Shang Shanshan,Xin Binjie
Conductive hydrogels represent a pivotal advancement for next-generation wearable electronics. However, simultaneously optimizing mechanical robustness, interfacial adhesion, and electromechanical sensitivity remains a significant challenge. In this study, a multifunctional poly(vinyl alcohol)/chitosan/multi-walled carbon nanotube (PCM) composite hydrogel was developed via a facile freeze-thaw strategy. The resulting PCM hydrogel exhibits reliable adhesive strength (12.1 kPa on porcine skin) with over 70% retention after 10 cyclic attachment-detachment tests. Notably, the hydrogel possesses a high electrical conductivity of 13.2 mS/cm, enabling superior sensing performance with a Gauge Factor (GF) of 5.72 under large strains and excellent durability over 500 cycles. Real-time monitoring of human joint motions (e.g., wrist, finger, and elbow) confirms its rapid response and high signal fidelity. These results underscore the potential of PCM hydrogels as a robust and high-performance interface for sophisticated human-machine interaction and sports health monitoring.
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DOI
高影响因子
ACS Omega
·
2024
·
IF 3.7
Kai Deng,Yining Zhang,Hang Xiao,Yujiao Hou,Qingbin Xu,Ying Li,Weijun Kong,Li Ma
The ubiquitous aflatoxin B1 (AFB1) contamination in foods and other complex matrices has brought great challenges for onsite monitoring. In this study, an ultrasensitive Nafion-immobilized functionalized multiwalled carbon nanotube (MWCNT)-based electrochemical (EC) immunosensor was developed for trace AFB1 detection. The introduced Nafion film could steadily stabilize functionalized MWCNTs with uniform distribution and tiling on the surface of a Au electrode. Functionalized MWCNTs with a large specific surface area, numerous active sites to couple with abundant anti-AFB1 monoclonal antibodies (mAbs), and high conductivity served as the signal amplifier for remarkably enhancing the sensing performance of the immunosensor. In the presence of AFB1, it was specifically captured by mAbs to reduce the amplified current signals, which were recorded by differential pulse voltammetry for the accurate quantitation of AFB1. Because of the synergistic effects of Nafion on the stabilization of functionalized MWCNTs as signal enhancers, the developed EC immunosensor exhibited an extremely high selectivity, excellent sensitivity with a limit of detection as low as 0.021 ng/mL, and a wide dynamic range of 0.05–100 ng/mL, besides fascinating merits of easy construction, low cost, good stability in 7 days, and good reusability. The anti-interference ability of the immunosensor was verified against three other mycotoxins, and the practicability and accuracy were confirmed by measuring AFB1 in fortified malt, lotus seed, and hirudo samples with a satisfactory recovery of 92.08–104.62%. This novel immunosensing platform could be extended to detect more mycotoxins in complex matrices to ensure food safety.
研究领域:
食品安全
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分析化学
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生物传感技术
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DOI
PubMed
高影响因子
IET Nanobiotechnology
·
2018
·Vol. 12
·期 4
·500-504
·
IF 2.059
Zhaoyang Xu,Xiangdong Jiang,Sicong Tan,Weibing Wu,Jiangtao Shi,Huan Zhou,Peng Chen
In recent years, carbon aerogels have attracted much attention in basic research and as potential applications in many fields. Herein, the authors report a novel approach using bamboo powder as raw material to fabricate cellulose nanofibers (CNFs)/multi-walled carbon nanotubes (MWCNTs) carbon aerogels by a simple dipping and carbonisation process. The developed material exhibits many exciting properties including low density (0.056 g cm −3 ), high porosity (95%), efficient capability for separation of oily droplets from water, and high adsorption capacity for a variety of oils and organic solvents by up to 110 times its own weight. Furthermore, the CNF/MWCNT carbon aerogels (CMCA) can be recycled many times by distillation and combustion, satisfying the requirements of practical oil-water separation. Taken together with its economical, environmentally benign manufacturing process, sustainability of the precursor and versatility of material, the CMCA developed in this study will be a promising candidate for addressing the problems arising from the spills of oily compounds.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
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2022
·
IF 6.137
Xiaoju Wang,Rui Xue,Mengzhu Li,Xingyu Guo,Bing Liu,Weigang Xu,Zhong Wang,Yuqing Liu,Guohe Wang
Multiwall carbon nanotubes (MWCNT)/thermoplastic polyurethane elastomer rubber (TPU) nanofiber films were manufactured by an electrospinning method with MWCNT of 10 %, 12.5 %, and 15 %. TPU was used as the matrix body, while MWCNT were used as the conductive materials . It is shown that MWCNT have a hollow tubular structure. In addition, with the increase in the amount of MWCNT, the thermal weight loss of the fiber film decreased gradually. The electrical conductivity became increasingly better, and the thermal and sensing properties changed. Considering all aspects of performance, MWCNT/TPU nanofiber film with the MWCNT mass fraction of 12.5 % was selected for human motion and pressure detection. The MWCNT/TPU nanofiber film has the properties of high sensitivity, wide monitoring range, rapid responsiveness and excellent stability. It might have potential applications in human motion detection, pressure detection and intelligent wearability.
研究领域:
材料科学
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纳米技术
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生物医学工程
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DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 13
·5163-5173
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IF 8.307
Duan-Chao Wang,Hou-Yong Yu,Zhaofeng Ouyang,Dongming Qi,Ying Zhou,Anqi Ju,Ziheng Li,Yiwen Cao
Bending multi-walled carbon nanotubes (MWCNTs) into rings and structuring them into aerogels is difficult. In this study, cellulose nanofiber (CNF)–MWCNT composite fibers with chain-ring structures were prepared by covalently interconnecting carboxylated CNF and aminated MWCNT by dehydration condensation, solving the problems of the formation of MWCNT aerogels and their phase separation during the compounding process and providing CNF-based aerogels with electrical conductivity. The covalently interconnected aerogels (CAs) had hierarchical porous structures with mechanical resilience and chain-ring fibers, which drove the CNF and MWCNT to form a continuous homogeneous network resulting in a high compression resistance of 269.02 kPa. The CA-based flexible all-solid-state supercapacitor had a quality specific capacitance of 114.8 F g−1, a capacitance retention rate of 94.78% and a Coulomb efficiency of 100%. The CA-based flexible sensor can sense different pressures with a stable response for 1000 cycles. This first study of pulling and bending MWCNT through CNF is expected to inspire more applications of MWCNTs in the fields of flexible supercapacitors and sensors.
研究领域:
材料科学
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能源科学
·
纳米技术
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DOI
高影响因子
ANALYST
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2026
·
IF 3.3
Yijie Zhang,Yongxin Tao,Shan Li,Yong Qin,Jinmin Wang
Baicalin (Bn), a bioactive compound derived from natural plants, has significant pharmaceutical value and is used in the treatment of diseases such as influenza. However, excessive baicalin administration may lead to increased drug toxicity, immune system disturbances, reduced therapeutic efficacy, and allergic reactions. The synergistic combination of bimetallic MOF and carbon nanotubes (CNT) yields a pronounced enhancement in electrochemical signal toward the analyte. In this study, a simple and low-cost one-pot method was proposed to fabricate ZnNi-MOF@MWCNT nanocomposites, which were used to develop an electrochemical sensor for the detection of Bn. Under optimized conditions, the sensor demonstrated a wide linear detection range of 5 × 10⁻⁹ to 6 × 10⁻⁷ M for Bn, with a limit of detection (LOD) of 1.12 × 10⁻⁹ M and a sensitivity of 130 A•M⁻¹. The sensor exhibited excellent stability, reproducibility, and resistance to interference from various substances. Additionally, the sensor showed satisfactory stability and recovery rates when applied to real sample goat serum. The proposed sensor material can be synthesized at room temperature, offering a new approach for the green synthesis of MOF-derived materials in pharmaceutical analysis.
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DOI
PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2024
·
IF 4.3
He Yu,Guan-Ya Zhou,Yu-Bing Liu,Hao-Bin Li,Lin Song,Chang-Yun Kun Xiao,Mu-Gen Peng
Carbon-based nanomaterials, particularly graphene, have garnered significant attention across diverse fields owing to their remarkable properties and versatile applications. Among these, laser-induced graphene (LIG) exhibits high porosity, excellent conductivity, and mechanical flexibility, which can be obtained through laser irradiation of carbon-rich precursors. This article introduces a novel flexible tactile sensor based on LIG/multiwalled carbon nanotube (MWCNT) composites. The surface is treated with spraying SiO2 and precured Ecoflex to form superhydrophobic property with water contact angle (WCA) of 153.4°, which is suitable for underwater condition. Enhanced with deep learning algorithms, the LIG/MWCNT sensors are integrated into a data glove, enabling precise recognition of Arabic sign language gestures with accuracy of 99.34%. The data glove equipped with the sensor can communicate wirelessly with a smartphone App via Bluetooth low energy (BLE) by a low-power and secure wireless protocol. The App displays the finger bending status and the recognized gestures in real time, and also provides feedback to the user. This work showcases the feasibility of the proposed sensing system for gesture recognition and the potential applications in underwater wearable electronics. Based on the excellent performance of the proposed sensing system, this article contributes to advancing the interdisciplinary research field of carbon-based flexible electronics and deep learning-based sensing applications.
研究领域:
材料科学
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电子工程
·
人工智能
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Yu Yang,Weifeng Gong,Yao Zhou,Tongtong Tang,Wenjie Liu,Chao Yao,ShiXiang Zuo,Xiazhang Li
This study synthesized LaFeO3 perovskite oxide with different cobalt doping ratios using the sol–gel method, followed by in situ hydrothermal treatment. The optimized LaFe0.8Co0.2O3 perovskite was then composited with linear multi-walled carbon nanotubes to investigate the structure, morphology, and electrochemical behavior of the composite material. In the composite material, linear MWCNTs were encapsulated into LaFe0.8Co0.2O3, and the content of MWCNTs had a significant impact on the performance of the composite material. When the ratio of LaFe0.8Co0.2O3 to MWCNTs reached 1 : 3, the electrochemical performance of the LaFe0.8Co0.2O3–MWCNT sample was optimal. Additionally, LaFe0.8Co0.2O3–MWCNTs-3 exhibited a high specific capacitance of 429.7 F g−1 at a current density of 1.0 A g−1, and the capacitance retention remained at 83.5% after 5000 cycles at a current density of 8.0 A g−1. In a symmetric electrode configuration, a specific capacitance of 151.6 F g−1 was achieved at the same current density, with a maximum energy density of 7.345 W h kg−1.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
CHINESE PHYSICS LETTERS
·
2024
·
IF 3.5
Jiajun Li,Dongchao Ji,Zhibo Zhang,Yanan Yang,Ruicong Zhang,Tianyu Wang,Yumin Zhang,Wenxin Cao,Jiaqi Zhu
Polymer-liquid crystals (PLC) is a common material for smart windows. However, PLC smart windows usually require high driving voltage to maintain transparency. In this work, we synthesized a novel PLC smart film by doping multi-wall carbon nanotubes (MWCNT) into a reverse-mode polymer network liquid crystal (R-PNLC). It was found that doping MWCNT could effectively reduce the threshold voltage (Vth) of R-PNLC from 19.0V to 8.4V. Due to co-orientation between MWCNT and LC molecules, the doped R-PNLC was able to maintain a high transmittance of visible light (~80%) without an applied electric field. We found that doping MWCNT could change the frequency modulation property of R-PNLC. The doped R-PNLC exhibits a wider frequency modulation range up to 40,000Hz, while the frequency modulation of the undoped R-PNLC reached to a saturation at 23,000 Hz. We also tested the electromagnetic interference (EMI) shielding efficiency of R-PNLC and found that the EMI shielding efficiency could be improved by doping only 0.01wt% MWCNT into the system. The total shielding effectiveness (SET) value of 0.01wt% MWCNT doped R-PNLC was up to 14.91 dB during frequency band of 5.38 GHz-8.17 GHz. This study demonstrates that the films are potentially useful for low-energy-consumption smart windows with enhanced electromagnetic shielding capability.
研究领域:
材料科学
·
光学
·
电子工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）