JOURNAL OF SOLID STATE CHEMISTRY
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2016
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IF 2.265
Tianfu Zhang,Zhuang Ma,Guoping Li,Zhen Wang,Benbo Zhao,Yunjun Luo
Electrostatic self-assembly in organic solvent without intensively oxidative or corrosive environments, was adopted to prepare Al/Fe 2 O 3 /MWCNT nanostructured energetic materials as an energy generating material. The negatively charged MWCNT was used as a glue-like agent to direct the self-assembly of the well dispersed positively charged Al (fuel) and Fe 2 O 3 (oxide) nanoparticles . This spontaneous assembly method without any surfactant chemistry or other chemical and biological moieties decreased the aggregation of the same nanoparticles largely, moreover, the poor interfacial contact between the Al (fuel) and Fe 2 O 3 (oxide) nanoparticles was improved significantly, which was the key characteristic of high performance nanostructured energetic materials. In addition, the assembly process was confirmed as Diffusion-Limited Aggregation. The assembled Al/Fe 2 O 3 /MWCNT nanostructured energetic materials showed excellent performance with heat release of 2400 J/g, peak pressure of 0.42 MPa and pressurization rate of 105.71 MPa/s, superior to that in the control group Al/Fe 2 O 3 nanostructured energetic materials prepared by sonication with heat release of 1326 J/g, peak pressure of 0.19 MPa and pressurization rate of 33.33 MPa/s. Therefore, the approach, which is facile, opens a promising route to the high performance nanostructured energetic materials.
研究领域:
材料科学
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纳米技术
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能源材料
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
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2017
·Vol. 29
·期 2
·767-774
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IF 1.907
Fengxiang Cao,Pengfei Jiang,Jianzhang Wang,Fengyuan Yan
Multi-wall carbon nanotubes (MWCNTs) and high strength glass fabrics (HSGFs) were modified by polydopamine and polyethyleneimine, respectively. The aim is to improve the friction and wear performance of the synthesized laminate composites in water environment. In this work, polydopamine was used to improve the dispersibility of MWCNTs in phenolic resin matrix, and polyethyleneimine was utilized to enhance the wettability and reactivity of HSGFs. The modified results showed that the dispersibility of MWCNTs treated by polydopamine in water had a distinct improvement in comparison with that of the pristine MWCNTs. Furthermore, it can be clearly observed that good dispersibility can improve the friction and wear performance of the laminate composites. After functionalizing HSGFs by polyethyleneimine, the laminate composites exhibited excellent interfacial bonding, also greatly enhancing the friction and wear properties of the composites.
研究领域:
材料科学
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表面工程
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DOI
高影响因子
Journal of CO2 Utilization
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2019
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IF 5.189
Qingqing Li,Xurui Zhang,Xiaodong Zhou,Qingyu Li,Hongqiang Wang,Jin Yi,Yuyu Liu,Jiujun Zhang
Electrocatalytic CO 2 reduction to produce low-carbon chemicals/fuels is one of the most important approaches for CO 2 emissions reduction and utilization. However, the insufficient catalytic activity, stability and selectivity of the electrocatalysts have been identified to be a major challenge. In this work, novel Bi-MWCNT-COOH/Cu catalysts are prepared via a facile co-electrodeposition technique on copper foil to obtain catalyst electrodes for selectively electro-catalyzing CO 2 reduction to produce formic acid (HCOOH). The as-prepared electrodes exhibited high catalytic activity, stability and selectivity toward the production of HCOOH. The faradaic efficiency for HCOOH production can reach values up to 91.7 % at ―0.76 V vs. RHE, with no obvious degradation after 12 h of continuous electrolysis. The proposed electrodeposition technique to produce composite catalyst electrodes is characterized by simplicity, rapidity, and cost-effectiveness, being promising for scaled-up industrial applications.
研究领域:
材料科学
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电化学
·
催化
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Ruli Xu,Xiaomin Qian,Zhiyuan Zhang,Fanshu Yuan,Yuqing Song,Jie Liu,Qianli Zhang,Jie Wei
A sensitive and selective carbon paste electrode (CPE) for the detection of bisphenol A (BPA) was prepared using N doped multi-walled carbon nanotubes (N-MWCNT) as the electron transport accelerator and molecularly imprinted polymer (MIP) as the recognition element of BPA. In presence of the initiator of 2, 2′-azobis(isobutyronitrile) (AIBN), BPA was imprinted using acrylonitrile as a functional monomer and ethylene glycol dimethacrylate (EGDMA) as a cross-linker. The polymers of MIP and non-molecularly imprinted polymer (NIP) were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Under the optimized conditions, the oxidation peak current increases linearly with the increase of BPA concentration in the range of 0.05 – 90 μmol/L (R = 0.9991), and the detection limit was 11.8 nmol/L. MIP/N-MWCNT/CPE successfully detected BPA in the elution solution of a plastic bottle.
研究领域:
分析化学
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环境科学
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材料科学
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电化学
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产品关联
DOI
高影响因子
POWDER TECHNOLOGY
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2023
·
IF 5.2
Minghan Wan,Bing Xu,Lei Shi,Nianben Zheng,Zhiqiang Sun
Nanofluid-based volumetric-type solar collectors have emerged as a promising technique for solar thermal applications. However, achieving the long-term stability of nanofluids under high-temperature, high-flux irradiation, and shear-flow conditions is still challenging. Herein, we propose a facile method to stabilize silicon oil-based multi-walled carbon nanotube (MWCNT) nanofluids via shear flow. The effects of shear flow on the stability of nanofluids are experimentally evaluated. Results indicate that the shearing force can break up the clusters. Once achieving a dynamic equilibrium between cluster formation and cluster breakage, the instability of nanofluids can be controlled within 7.3% for the heating temperature range 140 °C–180 °C. Besides, the shear-flow stabilized nanofluids can keep dynamic stability and maintain high solar thermal conversion performance with an efficiency reduction of within 7% after cyclic tests under irradiation of 19 Sun for 24 h. The proposed method offers a practical path for stabilizing nanofluids under harsh conditions.
研究领域:
材料科学
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能源工程
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热力学
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产品关联
DOI
高影响因子
Advanced Materials Interfaces
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2023
·Vol. 10
·期 15
·2202508
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IF 5.4
Zilong Jiang,Bo Jiang,Boyin Yang,Xin Liu,Yang Yang,Chunling Zhang,Yingshuang Shang,Haibo Zhang
Nanofiller reinforcement is an effective method to prepare high thermally conductive polymer-matrix composites. However, the poor dispersion of nanofillers and high interfacial thermal resistance between the filler and matrix seriously affect the thermal conductivity and mechanical properties of composites. To solve this problem, a small amount of conjugated fluorene group is introduced into the polymer chain of poly (ether ether ketone) (PEEK) to afford the fluorene-functionalized copolymer matrix (FD-PEEK). In an in situ polymerization procedure, the matrix non-covalently binds to multi-walled carbon nanotubes (MWCNT) to allow highly filled PEEK/MWCNT nanocomposites. With the filler dispersion and matrix–filler interfacial bonding improved, the prepared nanocomposites possess both high thermal conductivity and tensile strength. At the optimal ratio of 2 mol% fluorene groups in the polymer chain, the nanocomposite with 10 wt% MWCNT exhibits an excellent thermal conductivity of 2.41 W m −1 K −1 , which is 868% higher than pristine PEEK, with tensile strength remaining 104.3 MPa. The PEEK/MWCNT nanocomposites can be further used as matrix resins to build double-segregated network multi-component composites, which contributes to an innovative strategy to design high-performance thermally conductive materials.
研究领域:
材料科学
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复合材料
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高分子化学
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DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2024
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IF 8.2
Chunyue Zhang,Zhida Li,Baiqin Zhou,Wei Zhang,Lu Lu
The energy consumption of up to 90 % of the total power input in the anodic oxygen evolution reaction (OER) slows down the implementation of electrochemical CO 2 reduction reaction (CO 2 RR) to generate valuable chemicals. Herein, we present an alternative strategy that utilizes methanol oxidation reaction (MOR) to replace OER. The iron single atom anchored on nitrogen-doped carbon support (Fe-N-C) use as the cathode catalyst (CO 2 RR), low-loading platinum supported on the composites of tungsten phosphide and multiwalled carbon nanotube (Pt-WP/MWCNT) use as the anode catalyst (MOR). Our results show that the Fe-N-C exhibits a Faradaic selectivity as high as 94.93 % towards CO 2 RR to CO, and Pt-WP/MWCNT exhibits a peak mass activity of 544.24 mA mg −1 Pt , which is 5.58 times greater than that of Pt C (97.50 mA mg −1 Pt ). The well-established MOR||CO 2 RR reduces the electricity consumption up to 52.4 % compared to conventional OER||CO 2 RR. Moreover, a CO 2 emission analysis shows that this strategy not only saves energy but also achieves carbon neutrality without changing the existing power grid structure. Our findings have crucial implications for advancing CO 2 utilization and lay the foundation for developing more efficient and sustainable technologies to address the rising atmospheric CO 2 levels.
研究领域:
化学工程
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环境科学
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材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
SYNTHETIC METALS
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2022
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IF 4
Jinghao Wu,Shuangshuang Cai,Qiuyu Kong,Meng Chen,Zuanguang Chen
Existing electrochemical sensors generally possess limited sensitivity, which necessitates the use of high-cost materials such as precious metals and enzymes. Therefore, the development of electrochemical sensors that have low synthesis cost, short detection time, simple operating process, high sensitivity and non-precious metals is highly desirable for establishing modern and more efficient electrochemical analysis methods. Herein, we used sodium borohydride reduction method to load Fe and Co onto multi-walled carbon nanotubes (Co,Fe/MWCNT). The successful doping of two metals exposes a large number of active sites in the material and increases the effective area. The morphology and elemental composition of the composite material were determined, and the material was used to modify a glassy carbon electrode for the construction of a hypersensitive electrochemical sensor. Subsequently, the electrochemical behavior of rutin on the constructed sensor was investigated under optimum conditions. The reduction peak current and concentration of rutin were found to exhibit a good linear relationship within the concentration ranges 8 × 10 −4 –8 × 10 −3 µmol/L (R 2 = 0.998), 1 × 10 −2 –0.1 µmol/L (R 2 = 0.996), and 1–200 µmol/L (R 2 = 0.998). The electrode also showed good reproducibility and a low limit of detection of 2.8 × 10 −4 µmol/L (3S 0 /S). Importantly, the sensor was successfully applied for the measurement of rutin content in tablet and urine. Thus, an effective analytical platform for rutin determination during the analysis of real drug and biological samples was developed.
研究领域:
电化学
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材料科学
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分析化学
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药物分析
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Yu Zhong,An-Yang Li,Jun-Bin Dai,Chen Guo,Shan-Shan Chen,Li-Li Su,Qin-Ying Liu,Yang Sun
Sensitive and rapid quantification of chemotherapeutic drug paclitaxel (PTX) in human serum is crucial for enabling personalized dosing and minimizing severe toxicity. In this approach, an ultrasensitive electrochemical sensor was developed via facile one-step deposition method for rapid determination of PTX. The nitrogen-doped carbon quantum dots-multiwalled carbon nanotubes (NCQDs-MWCNT) nanocomposite, which modified on the screen-printed carbon electrode (SPCE), synergistically enhanced the active surface area, boosted the electrical conductivity and improved the detection sensitivity. Under the optimized conditions, the prepared NCQDs-MWCNT/SPCE exhibited good linearity in both 0.2 M phosphate buffer (pH 7.4) and human serum, and the limit of detection (LOD) reached as low as 1.0 nM and 2.3 nM, respectively. Additionally, the developed sensor possessed satisfactory repeatability, long-term storage property and anti-interference capability. The recovery rates were in the range of 107.73–114.05 % in human serum, indicating its accuracy of PTX measurement. In depth, the electrochemical behaviors of PTX at NCQDs-MWCNT/SPCE were examined. Collectively, the proposed ultrasensitive and facile sensor displays potential applications in therapeutic drug monitoring for PTX, facilitating individualized treatment in precision medicine.
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DOI
高影响因子
CHEMOSPHERE
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2022
·
IF 8.943
Vasanthakumar V,Murad Alsawalha,Thamer Alomayri,Saud Allehyani,Yi-bo Hu,Ming-Lai Fu,Baoling Yuan
A novel composite of multiwall carbon nanotube (MWCNT) supported V 2 O 5 quantum dots decorated Bi 2 O 3 hybrid was prepared by the simple wet-impregnation method, and the photocatalytic performance of the prepared samples was investigated against the photodegradation of ciprofloxacin (CIP). Herein, different samples of pristine, V 2 O 5 /Bi 2 O 3 and MWCNT@V 2 O 5 /Bi 2 O 3 hybrid photocatalyst were prepared and systematically characterized by various physicochemical techniques. The characterization results demonstrated that the introduction of MWCNT can change the energy band gap of V 2 O 5 /Bi 2 O 3 , and the band energies vary with a constituent of MWCNT@V 2 O 5 /Bi 2 O 3 catalyst, in which MWCNT@V 2 O 5 /Bi 2 O 3 -5 (0.05 g@0.50 g:0.50 g) has the optimal band gap energy of 2.46 eV. The photocatalytic test demonstrates that the MWCNT@V 2 O 5 /Bi 2 O 3 -5 hybrid composites exhibited enhanced photocatalytic activity in CIP degradation compared to that pure and other photocatalyst and its degradation efficiency did not decrease significantly even after five cyclic experiments. The enhanced photocatalytic activity was due to the formation of heterojunction among MWCNT, V 2 O 5 and Bi 2 O 3 , which distinctly improved the separation efficiency of the photogenerated charge carrier, thus increasing the degradation performance. This work gives a new approach to designing an efficient photocatalyst for contaminants degradation.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Polymers
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2024
·Vol. 16
·期 17
·2483
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IF 4.7
Lei Xu,Jiao Lv,Shengrui Yu
Conductive multi-walled carbon nanotubes (MWCNTs) as well as piezoelectric zinc oxide (ZnO) nanoparticles are frequently used as a single additive and dispersed in polyvinylidene fluoride (PVDF) solutions for the fabrication of piezoelectric composite films. In this study, MWCNT/ZnO binary dispersions are used as spinning liquids to fabricate composite nanofibrous films by electrospinning. Binary additives are conducive to increasing the crystallinity, piezoelectric voltage coefficient, and consequent piezoelectricity of as-spun films owing to the stretch-enhanced polarization of the electrospinning process under an applied electric field. PCZ–1.5 film (10 wt. % PVDF/0.1 wt. % MWCNTs/1.5 wt. % ZnO nanoparticles) contains the maximum β-phase content of 79.0% and the highest crystallinity of 87.9% in nanofibers. A sensor using a PCZ–1.5 film as a functional layer generates an open-circuit voltage of 10 V as it is subjected to impact loads with an amplitude of 6 mm at 10 Hz. The piezoelectric sensor reaches a power density of 0.33 μW/cm 2 and a force sensitivity of 582 mV/N. In addition, the sensor is successfully applied to test irregular motions of a bending finger and stepping foot. The result indicates that electrospun PVDF/MWCNT/ZnO nanofibrous films are suitable for wearable devices.
研究领域:
材料科学
·
纳米技术
·
传感器技术
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Sike Yu,Yan Bao,Lu Gao,Wenbo Zhang,Ruyue Guo,Ye Sun,Jianzhong Ma
Inspired by the spider web predation mechanism, a novel MWCNT/Ni/BC (MNB) aerogel with infrared-radar dual stealth and signal transmission was successfully prepared. • Ni chains and MWCNT/BC aerogel form a cross-scale mechanical interlocking structure that optimizes impedance matching for promoting electromagnetic wave attenuation. • The fluffy 3D space structure combine details excellent mechanical resilience with a conductive MNB aerogel network, enabling outstanding infrared stealth and signal transmission performance. Multifunctional materials integrating infrared stealth, electromagnetic absorption (EMA), and sensing are critical for next-gen intelligent soldier systems, yet the inherent trade-off between sensing and dual stealth performance hinders their development. Inspired by spider web predation, this study fabricated multi-walled carbon nanotube (MWCNT) /Ni chain/bacterial cellulose (MNB) aerogels via magnetic induction and directional freezing. By tuning Ni chain content and pore structure, a new generation of electromagnetic protection material integrating infrared-radar stealth and sensing was developed to enhance individual combat survivability. The optimized MNB aerogel exhibits exceptional EMA and impedance matching: a minimum reflection loss of −69.73 dB at 2.49 mm, specific RL of −2182.19 dB·mm −1 , and an effective absorption bandwidth of 8.14 GHz, while >99% absorption even at 120 °C. Meanwhile, attributable to its low infrared emissivity and excellent thermal insulation, the MNB aerogel maintains stable infrared stealth performance, consistently achieving a temperature difference of 34 °C between the target surface and the hot stage. Furthermore, its elastic conductive network enables a fast piezoresistive sensing response, demonstrating significant potential for individual distress signal transmission in combat scenarios. This study presents a simple strategy for next-gen intelligent electromagnetic protection materials with broad potential in thermal management, aerospace, and health monitoring.
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DOI
高影响因子
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