CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Jingjing Wu,Hongqiang Li,Xuejun Lai,Zhonghua Chen,Xingrong Zeng
Piezoresistive pressure sensors with high sensitivity, fast response, and simplified signal collection play an important role in a wide variety of fields. However, most of them are water-sensitive and easily attacked by water, leading to serious signal distortion in practical application. Herein, we fabricated a conductive and superhydrophobic 1H,1H,2H,2H-perfluorooctyltriethoxysilane (FAS) modified reduced graphene oxide@carbon nanotubes/chitosan (F-rGO@CNTs/CS) aerogel for piezoresistive pressure sensor. Benefiting from the porous structure of aerogel and the synergy of CNTs and rGO, the aerogel sensor achieved high sensitivity and fast response. Moreover, the sensor maintained a stable electrical resistance response after 1000 loading-unloading cycles. Importantly, owing to the rough structure constructed by CNTs and multi-pores and the low surface energy of FAS, the sensor possessed superhydrophobic property with a high water contact angle of 154°, and exhibited remarkable water repellency even during compression process. In addition, the sensor was successfully applied for detecting human behaviors from small-scale muscle movements to large-scale body motions. Our findings provide a new direction to fabricate functional and high-performance piezoresistive pressure sensor for various applications even under water or wet environment.
研究领域:
材料科学
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传感器技术
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生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2016
·Vol. 80
·期 2
·480-486
·
IF 1.473
Liu Shuping,Wang Wei
Abstract
Construction of a composite WO 3 film has been considered to be an important way to improving the electrochemical performances and electrochromic properties. Herein, we fabricated a composite film containing WO 3 nanoparticles, chitosan (CS), and carbon nanotubes (CNTs) by a layer-by-layer technique (LbL). The composite film displays light black to dark blue over the potential range from 0 to −1.5 V. Compared with the WO 3 /CS film, the WO 3 /CS-CNTs film displays increased current densities, which supported a greater number of sites for Li + ions intercalation and extraction. Furthermore, the electrochromic performance of the composite film is enhanced by incorporation of CNTs into the WO 3 film, resulting in coloration efficiency of 79.2 cm 2 C −1 and optical contrast of 13.5 % at 800 nm under a square wave potential from −1.5 to +1.5 V. Therefore, the improved electrochromic properties could be achieved using WO 3 and CNTs composite film. Graphical Abstract
研究领域:
材料科学
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电化学
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DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2014
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IF 4.287
J. Li,H. Mei,W. Zheng,P. Pan,X.J. Sun,F. Li,F. Guo,H.M. Zhou,J.Y. Ma,X.X. Xu,Y.F. Zheng
In this paper, carbon nanotubes (CNTs) were successfully incorporated in the composite composed of hemoglobin (Hb) and collagen using co-electrospinning technology. The formed Hb-collagen-CNTs composite nanofibers possessed distinct advantage of three-dimensional porous structure, biocompatibility and excellent stability. The Hb immobilized in the electrospun nanofibers retained its natural structure and the heterogeneous electron transfer rate constant ( k s ) of the direct electron transfer between Hb and electrodes was 5.3 s −1 . In addition, the electrospun Hb-collagen-CNTs nanofibers modified electrodes showed good electrocatalytic properties toward H 2 O 2 with a detection limit of 0.91 μM (signal-to-noise ratio of 3) and the apparent Michaelis–Menten constant ( K m app ) of 32.6 μM.
研究领域:
生物传感器
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材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 20
·9187-9201
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IF 4.682
Pan Hongwei,Wang Zhaokun,Wei Zhaoyang,Zhang Jiaping,Xu Minghan,Zong Chengzhong,Cao Lan,Wang Qingfu
In this study, a TPU/CNTs–ILs flexible sensor with a sandwich structure is prepared by a combination of coating and 3D printing method. First, to promote the dispersion of carbon nanotubes (CNTs), 1-butyl-3-methylimidazole tetrafluoroborate ionic liquids (ILs) are used as modifier. Two layers of thermoplastic polyurethane elastomer (TPU) filaments are printed on the bottom plate via 3D printing and coated with a layer of CNTs–ILs as a conductive layer. Finally, two layers of TPU are printed to encapsulate the conductive layer. It is revealed that the printed TPU/CNTs–ILs flexible sensor exhibited a sensitive resistance response at small and large strains (GF value of 20 and 440 at strains of 5% and 50%, respectively) while retaining high mechanical strength (tensile strength of more than 30 MPa and 600% elongation at break). In addition, the fabricated flexible sensor still displayed good resistance response after being cyclically stretched in the range of 0–50% strain for more than 400 s. Comparing the signal response of different vocal cord vibration frequencies and loudness, it is shown that the flexible device with high sensitivity in sensing can monitor human motion behavior, indicating the TPU/CNTs–ILs flexible sensor with a sandwich structure has excellent application prospects as wearable electronic components. Graphical abstract
Scheme 1. The graphic abstract of the whole experimental process
研究领域:
材料科学
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电子工程
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生物医学工程
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
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2022
·
IF 4.291
Nan Wang,Hui Sun,Xiaodong Yang,Wenbo Lin,Wenyu He,Hao Liu,Gajanan Bhat,Bin Yu
The flexible smart wearable device with low cost and high performance is highly desired but rather challenging. In this work, a wearable temperature sensor was developed by integrating the polybutylene terephthalate melt-blown nonwoven fabric (PBT NW) with reduced graphene oxide (rGO) and carbon nanotubes (CNTs) via a simple mechanical ultrasonication method. The microstructures of the rGO/CNTs@PBT NW sensor were investigated by FT-IR, XRD , and SEM techniques, and the thermal and mechanical properties of this sensor were systematically analyzed. The conductive rGO and CNTs could be tightly fixed to the surface of PBT NW. Compared with original PBT NW, the tensile properties of rGO/CNTs@PBT NW sensor were improved. The results of sensing performance tests showed that the prepared temperature sensor had high sensitivity (−0.737% °C −1 ) and linearity (R 2 =0.98) with a resolution of 0.1 °C between 25 °C and 45 °C, a long-term stability and good circularity indicating that our sensor can meet the monitoring requirement of real-time human body temperature. In addition, this sensor could also be used to monitor human respiratory rate. Our study may provide a new idea for the fabrication of the flexible temperature sensor with nonwoven substratefor monitoring the human body and environment temperature.
研究领域:
材料科学
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智能穿戴设备
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
·
IF 6.76
Zhongbo Zhu,Shumei Kang,Hua Chen,Qingping Zhao,Zhaokang Huo,Pengyu Li,Qidong Cao,Chenshuo Lu
In this work, hydrophobized copper powders combined siloxane-modified carbon nanotubes (SHMWCNTs) to obtain intertwined hybrids of carbon nanotubes and copper (CNTs-Cu hybrids), and superhydrophobic CNTs-Cu hybrids/epoxy coatings were prepared on the surface of AH36 carbon steel by drop coating. The surface morphology and wettability of coatings were changed by adjusting the ratios of SHMWCNTs to hydrophobized copper powders. The obtained coating can show a water contact angle of 167.2°, a water sliding angle of 2.9°, a plant oil contact angle of 134.3°, and self-cleaning properties. The coating maintains superhydrophobicity after 300 tape-peeling times, exhibiting excellent mechanical durability. The fouled area percentages of chlorella on the coating and a pure epoxy resin were 0.23(±0.07)% and 12.18(±1.22)%, respectively, displaying anti-biofouling resistances. The coating has excellent corrosion resistance, and its corrosion current density reached 9.55 × 10 -8 A/cm 2 .
研究领域:
材料科学
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腐蚀与防护
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表面工程
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2022
·
IF 7.968
Tangtong Ju,Yue Dai,Hailong Tang,Meiling Wang,Xiao Sun,Min Wang,Yongqing Ma,Ganhong Zheng
Direct conversion of CH 4 to high valued chemicals under mild conditions is attractive but full of challenges. Here, we present a ternary composite that consists of Ni-doped TiO 2 nanocubes (NCs) and CNTs as a new kind of catalyst (denoted as CNTs-Ni@TiO 2 NCs) for CH 4 photocatalytic conversion to C1 oxygenated products at 30 °C. Using H 2 O 2 as an oxidant, a high C1 oxygenated products yield and selectivity of 1.43 mol/(mol Ni ·h) and 95.6% can be reached in 2 h at 30 °C. The superior photocatalytic performance resulted from the synergistic effects of TiO 2 NCs, Ni species, and CNTs such as enhanced visible light absorption , improved electron/hole separation and charge transfer property, and lowered C-H bond cleavage energy required for CH 4 activation, were carefully studied. Good reusability of the catalyst was studied by recycle experiments. Possible reaction mechanism based on the radical routes were carefully discussed by combining in-situ Fourier transform infrared spectroscopy , X-ray photoelectron spectroscopy, electron spin resonance spectroscopy, radical scavenger experiments and density functional theory calculation.
研究领域:
材料科学
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催化
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环境化学
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物理化学
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纳米技术
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产品关联
DOI
高影响因子
ACS Nano
·
2025
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IF 16
Chenzhi Ding,Yao Ding,Kao Wang,Zhaobo Zheng,Fang Liu,Xuyun Guo,Mohsen Tamtaji,Zhengtang Luo
Heterojunction engineering, serving as a key framework for building blocks between diverse functional materials, has emerged as a highly promising strategy to address the demand for efficient catalysts in lithium–sulfur (Li–S) batteries. However, achieving full matrix electronic control in the bulk phase is a bottleneck in regulating the electrochemical catalytic behavior of heterostructure catalysts. Herein, we report a “tube-in-tube” multifunctional catalyst that can strengthen the sulfur redox reaction (SRR) in Li–S batteries. Benefiting from a large-scale and oriented two-dimensional (2D) superlattice interface, the tailored heterostructure catalysts (MoSe2/MoS2@CNTs) show a “1 + 1 > 2” synergistic effect in lithium polysulfide (LiPSs) adsorption and catalytic conversion during SRR. In situ studies and theoretical results reveal that this 2D Moiré superlattice interface not only optimizes the adsorption of polysulfides but also moderates the overall electronic density of catalysts. Consequently, Li–S batteries assembled with MoSe2/MoS2@CNTs-PP as a modified separator deliver an outstanding discharge capacity of 1225 mAh g–1 at 0.2 C with a Ketjenblack/S cathode while maintaining a specific capacity of 870 mAh g–1 even at 5 C. Additionally, due to the inhibited “shuttle effect” by heterostructure catalysts, the modified separators exhibit a less capacity fading of 0.063% per cycle after 1000 cycles (1 C) even with a high sulfur loading (3.8 mg cm–2). This work focuses on designing an adsorption–catalysis synergistic interface within a full matrix of catalysts for Li–S chemistry and providing insights into the design of multifunctional catalysts for energy-storage systems based on the catalytic reaction, e.g., Zn–I2 and metal–air batteries, etc.
研究领域:
储能
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材料科学
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电化学
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纳米技术
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催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2022
·Vol. 12
·期 34
·2201675
·
IF 29.698
Wenbo Liu,Xin Sui,Changkun Cai,He Huang,Rui Xu,Dongsheng Geng,Mingyang Chen,Jun Lu
Mg-CO 2 batteries, which exploit the greenhouse gas CO 2 as cathode active species, are an appealing next-generation battery candidate due to their high efficiency energy storage and value-added CO 2 utilization. However, compared with other metal-CO 2 systems, few aprotic Mg-CO 2 batteries have been reported so far as a result of several crucial problems including the comparatively slow redox reaction kinetics, a large decomposition energy barrier of the reduction products, and poor reversibility in their multi-electron three-phase cathodic reactions in nonaqueous environments. Herein, a rechargeable Mg-CO 2 battery is developed by using a Mo 2 C-CNTs catalytic cathode, a nonaqueous electrolyte, and a magnesium metal anode. The Mo 2 C-CNTs catalytic cathode can greatly reduce the charge overpotential of the Mg-CO 2 battery through tuning the CO 2 reduction pathways. The results of a variety of ex situ and in situ experiments as well as theoretical calculations show the Mo 2 C catalyst not only induces surface molecular adsorption for faster reaction kinetics but also improves the selectivity toward MgC 2 O 4 in the CO 2 reduction process for a higher Faraday efficiency. An exceptional low voltage hysteresis is achieved for the Mg-CO 2 battery. This work demonstrates a promising strategic option for rechargeable nonaqueous Mg-CO 2 batteries for simultaneously addressing energy and environmental issues.
研究领域:
能量存储
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电池技术
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材料科学
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电化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Wakeel Ahmad,Faten Al-Hazmi,Faris Alfifi,Muneerah Alomar,Majed Y. Awaji,Sohail Mumtaz,Mohammad Ehtisham Khan,Mohd Imran,Mehraj-ud-din Naik,Muhammad Shahid Rashid
Although transition metal oxides (TMOs) were extensively investigated as electrodes materials in supercapacitor devices, their higher pricing and availability constraints prevent for wide spread uses. In contrast, alkaline earth metal oxides like SrO are typically unnoticed for energy storage applications, despite their cost-effectiveness, natural abundance, chemical stability, and naturally promising properties. In order to fill this gap, we present the preparation of pure SrO and its composites with carbon nanotubes (SrO/CNT-25 and SrO/CNT-50) by hydrothermal method, and studied the effect of incorporating CNTs into a SrO framework to improve the capacity of energy storage systems (ESSs). The structural, morphological, and compositional studies of prepared were investigate using XRD, SEM, and XPS analysis respectively. The electrochemical activity is assessed using a three-electrode setup, demonstrating that the SrO/CNT-25 composite possesses a superior specific capacitance of 226.55 F/g and a prolonged maximum discharge time compared to SrO and SrO/CNT-50. The SrO/CNT-25 demonstrated good capacitive contributions (32.2 %) and diffusive contribution (65.8 %) at a scan rate of 125 mV/s. Moreover, Asymmetric supercapacitor (ASSC) was fabricated by active materials (SrO/CNT-25) and activated carbon which employ as the positive and negative electrode accordingly. The ASSC device shows a specific capacity of 385 C/g, with energy density of 45.41 Wh/kg, power density of 7500 W/kg, capacity retention of 95.98 % and coulombic efficiency of 99.18 % after 3000 charging and discharging cycles. The present results represented the novelty of applying the SrO/CNTs-25//AC device for sustainable ESSs. The synergistic impact between SrO and CNTs enhances interfacial transfer of charge and electrochemical presentation that offering a sustainable and economical alternative to traditional TMO-based ESSs.
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DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Guixin Zhao,Jinzhao Huang,Feng Jiao,Ke Zhang,Yu Zhang,Jiabei Xue,Xiaolong Deng
NiCoFe-based multicomponent alloy catalysts have been extensively studied as non-precious metal high-entropy alloy catalysts. They exhibit outstanding electrochemical performance in the electrolytic hydrogen production process. Here, we employ one-dimensional carbon nanotubes as a substrate to prepare a series of carbon-based high-entropy heterostructure catalysts. The NiCoFeMnLa/CNTs@Cr2O3 composite structure is obtained by forming oxides on the surface via vapour deposition, effectively increasing the number of active sites. The carbon-based transition metal nanomaterial catalyst NiCoFeMnLa/CNTs@Cr2O3 exhibited outstanding performance in the alkaline electrolytic catalysis of the oxygen evolution reaction, achieving an overpotential of merely 235 mV at a current density of 10 mA cm-2 in alkaline simulated seawater solution. Notably, the catalyst maintained relatively stable current density during 24 h electrochemical testing, indicating that the NiCoFe multicomponent alloy catalyst combined with Cr2O3 combination holds promise for enhanced stability during seawater electrolysis. Driven by these findings, this work may offer novel insights into the rational design of highly efficient electrocatalysts for green hydrogen production processes, particularly concerning carbon-based high-entropy alloy nanoparticle catalysts.
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DOI
高影响因子
Nano-Micro Letters
·
2019
·Vol. 11
·期 1
·1-17
·
IF 9.043
Cao Wentao,Ma Chang,Tan Shuo,Ma Mingguo,Wan Pengbo,Chen Feng
An ultrathin and flexible carbon nanotubes/MXene/cellulose nanofibrils composite paper with gradient and sandwich structure was successfully fabricated via a facile alternating vacuum-assisted filtration process.
The composite paper exhibits excellent mechanical property and electromagnetic interference shielding performance.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）