INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2018
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IF 4.229
Fanghui Wang,Yajun Zhang,Yanan Wang,Yimeng Luo,Yuenan Chen,Hong Zhu
We used the chemical vapor deposition method to prepare dandelion-like CNTs-Ni foam composite carrier, and then the electroless plating method was used to deposit Co-P nanoparticles on the CNTs of the CNTs-Ni foam. The CNTs-Ni foam and Co-P/CNTs-Ni foam were characterized by BET, SEM, XRD , XPS , and EDS . The results showed that CNTs were uniformly and densely grown in situ on the surface of Ni foam and were further successfully coated with Co-P nanoparticles. The Co-P/CNTs-Ni foam catalysts still maintained the dandelion-like structure and reached a maximum hydrogen production rate of 2430 mL min −1 g −1 at 25 °C. Furthermore, the Co-P/CNTs-Ni foam catalysts also exhibit a remarkable cycling performance and low activation energy (49.94 kJ mol −1 ) for the methanolysis of sodium borohydride .
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高影响因子
ELECTROCHIMICA ACTA
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2018
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IF 5.116
Sa Liu,Xiaowen Chen,Si Wang,Zheng Yang,Jingxia Gao,Ping Zhu,Xinsheng Zhao,Guoxiang Wang
Developing an efficient non-precious metal catalyst for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in regenerative energy conversion and storage devices is very imperative but still challenging. Herein, a three-dimensional (3D) hierarchical porous Co/CoO x nanoparticles embedded N-doped carbon hybrid threaded with carbon nanotubes (Co/CoO x @NC-CNTs) was prepared via in situ threading CNTs through ZIF-67 polyhedron and a succedent carbonation process. Compared to those of commercial electrocatalysts (Pt/C and RuO 2 ), the as-prepared hybrid showed comparable electrocatalytic activity with positive ORR half-wave potential ( E 1/2 ) of 0.836 V, low OER potential ( E j=10 = 1.62 V), good methanol tolerance and excellent electrocatalytic stability. Moreover, the small overpotential difference value (Δ E = E j=10 - E 1/2 ) of 0.784 V is competitive to those of recent reported outstanding bifunctional oxygen electrocatalysts. The high electrocatalytic properties of the Co/CoO x @NC-CNTs hybrid are attributed to the synergistic effect of high surface area, desirable pore structure and reasonable chemical composition .
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Journal of Energy Storage
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2024
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IF 8.9
Wenxing Luo,Lixiang Luo,Yan Ma,Yichi Liu,Yuqiong Xie,Xiaowu Hu,Wenjing Chen,Xiongxin Jiang
Phase change materials (PCM) hold significant promise for applications in thermal management of electronic components and solar energy storage. However, their widespread application has been hindered by limited thermal conductivity and the risk of liquid leakage . In this study, we developed shape-stabilized composite PCM by encapsulating polyethylene glycol (PEG) within Polyvinyl alcohol (PVA) aerogel . To enhance the performance, we incorporated different concentrations of carbon nanotubes (CNTs) into the PVA aerogel matrix. Our experimental results show that the PEG/PC20 composite PCM has an impressive thermal conductivity of 0.568 W/m·K. This improvement can be attributed to the efficient thermal conductivity network created by the CNTs. In addition to its remarkable structural stability, thermal reliability, and shape stability, PEG/PC20 also exhibits exceptional thermal storage capacity and photothermal conversion capability. Moreover, PEG/PC20 demonstrates outstanding temperature control in the thermal management of electronic components, significantly prolonging the time required to reach the peak temperature of an electric heater by a factor of 5. Consequently, PEG/PC20 exhibits tremendous potential for solar energy storage and the efficient thermal management of electronic components.
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MICROCHIMICA ACTA
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2024
·Vol. 192
·期 1
·1-14
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IF 5.3
Wang Yilin,Zhao Zixia,Wang Yuefan,Liu Zhifang,Chen Leyao,Qi Jin,Xie Yixi,Zhao Pengcheng,Fei Junjie
GO/Co-MOF/PPy-350 (GPC-350) was synthesized by in situ growth of ultrafine Co-MOF on graphene oxide (GO), followed by encapsulation with polypyrrole (PPy) and calcination at 350.0℃. Meanwhile, MoS 2 -MWCNTs (MoS 2 -CNTs) were produced via the in situ synthesis of MoS 2 within multi-walled carbon nanotubes (MWCNTs). The electrochemically superior GPC-350/MoS 2 -CNTs nanocomposite was then achieved by combining GPC-350 with MoS 2 -CNTs. The polypyrrole encapsulation serves to protect the ultrafine Co-MOF, preventing its degradation during the calcination process. The linear detection range of the GPC-350/MoS 2 -CNTs/GCE sensor for the determination of catechin (CA) in phosphate buffered saline (PBS) was from 5.0 to 1800.0 nM with a limit of detection of 1.78 nM. In addition, the materials were characterized using SEM, EDX, TEM, XRD, EIS, XPS, FTIR, and Raman. These results indicate that the synthesis of GPC-350/MoS 2 -CNTs nanocomposites is successful and CA in beverages samples can be effectively detected using electrochemical sensors. Additionally, the reaction mechanism of CA was explored through cyclic voltammetry. The application of GPC-350/MoS 2 -CNTs nanocomposites in sensor technology offers innovative approaches for the ultrasensitive detection of flavonoids. Graphical abstract
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PubMed
高影响因子
ACS Applied Electronic Materials
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2025
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IF 4.7
Jing Zhang,Zhi Song,Yao Wei,Xiaoyu Li,Xingyao Li,Yu Hua,Qingguo Ren,Xiaolin Lan,Yi Hou,Lixi Wang
The development of high-performance microwave absorbers with strong absorption intensity, broad absorption bandwidth, and thin matching thickness remains a focal point in the field of electromagnetic (EM) attenuation materials. The synergistic design and construction of microstructures based on multiple polarization and loss mechanisms represent an effective approach to achieve this objective. Metal–organic frameworks (MOFs) inherently possess both magnetic and dielectric capabilities, making them excellent templates for high-performance microwave absorbers. However, single-component MOF-derived absorbers still suffer from insufficient absorption efficiency and a narrow effective bandwidth. Herein, a 0D/1D composite optimization strategy combining both component design and microstructure engineering is proposed to enhance EM attenuation in MOF-derived absorbers. The design features a cubic dual-phase CoFe alloy to serve as a magnetic loss framework. Meanwhile, the in situ grown CNTs endow the nanocomposite with substantial conductive loss, as well as the enhancement of interfacial polarization and dipole polarization. The resultant CoFe@CNTs nanocomposite achieves a minimal reflection loss of −49.63 dB at 16.88 GHz (1.5 mm thickness) and 6.32 GHz EAB at 1.71 mm. Compared to single-component Co nanoparticles, the superior absorption performance with lower RL, wider bandwidth, and thinner thickness makes the CoFe@CNTs nanocomposite an ideal highly effective EM absorption candidate.
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高影响因子
Science China-Materials
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2025
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IF 7.4
Zhao Xinyi,Lin Xiangsheng,Yao Zhao,Li Yuanyue,Li Yang,Gong Ningji
Smart agriculture utilizes sensors and software to control agricultural production through mobile or computer platforms, enabling unmanned, automated, and intelligent management. Recently, research and development in plant growth monitoring technologies have garnered significant attention. The challenge lies in achieving long-term monitoring, phased predictions, and plant self-regulation without harming the plants. The present study demonstrates the fabrication of plant-compatible and breathable tensile and bending strain sensors using composite nanofiber membranes (CNMs) composed of Ti 2 C 2 T x (MXene), carbon nanotubes (CNTs), and thermoplastic polyurethanes (TPU) through electrospinning and ultrasonic immersion techniques. The MXene and CNTs synergistically form a dual-network conductive structure on the TPU nanofiber membrane, thereby imparting the composite membrane with remarkable tensile sensitivity (5.41, 7.39, and 3.39 within the ranges of 0%–20%, 20%–50%, and 50%–70%, respectively) as well as exceptional bending sensitivity (1.79, 0.89, and 0.46 within the ranges of 0°–30°, 30°–90°, and 90°–120°, respectively). The tensile strain sensor, combined with a deep learning Long Short-Term Memory (LSTM) model, establishes a platform for plant growth monitoring and prediction. The bending strain sensor, integrated with a shape memory alloy (SMA)-based soft actuator, forms a plant sensing-actuating system to assist in plant leaf growth. This work leverages MXene/CNTs/TPU CNMs to flexibly prepare strain sensors for specific applications, combining deep learning and soft actuators to achieve plant growth prediction and self-regulation. This research holds significant importance in advancing the development of smart agriculture.
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高影响因子
Inorganic Chemistry Frontiers
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2018
·Vol. 6
·期 1
·309-316
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IF 5.106
Yan Cheng,Jieming Cao,Hualiang Lv,Huanqin Zhao,Yue Zhao,Guangbin Ji
Carbon material systems, in particular carbon nanotube (CNTs)-based composites, have been demonstrated as potential electromagnetic absorbers if some difficulties, e.g., poor dispersion and lower skin-depth can be solved. To address the above barriers, amorphous bamboo-like carbon nanotubes (BCNTs) with controlled length/diameter ratios were catalyzed by tunable magnetic CoxNi1−x alloys through a facile in situ approach in this research. Such BCNT configuration can suppress the inverse microcurrent intensity and present boosted impedance matching behavior. Meanwhile, an improved dispersion state of BCNTs was achieved as compared to that of common graphited CNTs. Furthermore, reflection loss is highly influenced by the aspect ratio of BCNTs. After tailoring BCNTs to proper diameter, the sample of BCNTs/Co0.2Ni0.8 almost exhibited complete absorption focusing on X-band at low filler ratio of 20 wt%. This composite may be used as a light and efficient microwave absorber in X-band.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2019
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IF 4.182
Yan Gao,Zhe Liu,Guangfa Hu,Ruimin Gao,Jianshe Zhao
The supported catalysts of Mo 16 V 2 loaded with CNTs@MOF-199 are produced via three means including microwave method (CNTs@MOF-199-Mo 16 V 2 (M)), one-pot method (CNTs@MOF-199-Mo 16 V 2 (O)) and impregnation method (CNTs@MOF-199-Mo 16 V 2 (I)), respectively. The structure of the target materials is characterized by means of several analysis methods, and the effect of catalyst on removal of thiophene is investigated with the molecular oxygen as oxidant and the dimethyl formamide (DMF) as extraction solvent . The reaction conditions including catalyst dosage, reaction temperature, oxygen quantity and stirring speed are investigated. The experiment result shows that the catalyst synthesized by one-pot method has the best performance, and the efficiency can reach 100% under the optimum conditions. On the basis of kinetic study , thiophene oxidation shows the kinetic characteristic of a first order reaction, and then rate constant and activation energy were obtained. In addition, response surface design (RSD) is designed and applied to verify the optimum reaction conditions.
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高影响因子
ACS Applied Polymer Materials
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2025
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IF 4.7
Yaru Diao,Li Li,Yaoxiang Xu,Yanshan Liu,Ruxi Sun,Liqiang Chen,Yupeng Wu,Xiaohan Gao,Wenhao Cheng,Chen Chen,Zexian Xu,Jian Sun
In bone tissue reconstruction, infection is a critical limiting factor affecting treatment efficacy. So it is necessary to introduce antibacterial agents onto scaffold surfaces for functional modification while balancing osteoblast activity. Carbon nanotubes (CNTs), with their exceptional osteogenic properties and drug-loading capacity, emerge as ideal materials. Digital 3D printing technology was employed to composite CNTs loaded with the antibacterial agent chlorhexidine gluconate (CG) with polylactic acid-nano hydroxyapatite (PLA/nHA), and a novel composite scaffold with a controllable porous structure (PLA/nHA/CNTs-CG) was successfully constructed. TEM observations revealed the hollow structure of CNTs, while XPS, XRD, N2 adsorption–desorption tests, and TGA confirmed successful CG loading. SEM analysis demonstrated the porous network-like structure of PLA/nHA/CNTs-CG scaffolds, exhibiting compressive strength of (8.44 ± 0.24) MPa. Initial biosafety validation through CCK-8 assay, live/dead cell staining, and hemocompatibility tests confirmed good biocompatibility. Cell adhesion experiments demonstrated enhanced cellular attachment on PLA/nHA/CNTs-CG scaffolds. Osteogenic performance tests revealed that CNTs incorporation improved MC3T3-E1 cell osteogenic differentiation, with CG presence not compromising scaffold osteogenic activity. Antibacterial experiments demonstrated potent antibacterial effects against both Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The PLA/nHA/CNTs-CG composite scaffold demonstrates dual functionality in infectious bone defect repair by simultaneously promoting bone regeneration and exerting antibacterial effects, providing novel insights for designing bone repair materials for infected defects.
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高影响因子
ENERGY & FUELS
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2021
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IF 3.605
Zefeng Fu,Feixiang Bian,Junkai Ma,Wenkui Zhang,Yongping Gan,Yang Xia,Jun Zhang,Xinping He,Hui Huang
Silicon is considered as an ideal anode material for the next generation of lithium-ion batteries (LIBs) owing to its high specific capacity, low lithiation potential, and high natural abundance. However, its potential application is greatly restricted by poor electrical conductivity and large volume expansion during lithiation/delithiation processes. Herein, a novel solid-state reaction route is developed to synthesize a silicon/carbon nanotubes/carbon (Si/CNTs/C) composite by directly reacting magnesium silicide (Mg2Si) with lithium carbonate (Li2CO3). This method realizes synchronous formation of Si, CNTs, and amorphous carbon with a good interfacial configuration. Transmission electron microscopy (TEM) reveals that MgO may be responsible for the in situ growth of CNTs during the chemical reaction process. The crystalline Si particles are encapsulated by CNTs and the amorphous carbon matrix, which not only accommodates the volume expansion of Si but also enhances the integral electronic conductivity. Consequently, the Si/CNTs/C composite exhibits a high reversible capacity (702 mA h g–1 at 0.2 A g–1), excellent rate performance (420 mA h g–1 at 5 A g–1), and long cycling life (over 1500 cycles) when used as an anode for LIBs. Notably, this research might provide a new strategy for large-scale synthesis and utilization of Si/C composites in high-performance LIBs.
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高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.1
Zhenyu Wang,Tong Qi,Hebin Sun,Ningran Wang,Wenbin Zhang,Jianlong Zhao,Liancheng Zhao,Lijuan Liang
The creation of dependable analytical platforms capable of detecting multiple heavy metal ions (HMIs) concurrently continues to be a significant challenge in environmental monitoring. This study introduces an innovative composite sensing material composed of gold nanoparticles (AuNPs) modified UiO-66-NH 2 metal organic frameworks (MOFs) and carbon nanotubes (CNTs) for simultaneous detection of multiple HMIs. UiO-66-NH 2 , with its extensive specific surface area and three-dimensional porous framework, facilitates effective ion diffusion and target preconcentration. The interconnected CNTs network significantly enhances electron transfer kinetics and expands the electroactive surface area, as confirmed by cyclic voltammetry (CV) analyses. AuNPs can effectively amplify electrochemical reactions and enhance the sensitivity of electrochemical detection. The thoughtful design of this sensing material amalgamates the unique benefits of its constituents. This sensing material attains remarkably low limits of detection (LOD), which is 0.021 μg·L −1 for Cd 2+ and 0.008 μg·L −1 for Pb 2+ , showcasing outstanding resistance to interference in complex environments. The potential applicationsapplications of MOF-based composites in the electrochemical sensors of HMIs are expanded by this methodology.
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高影响因子
TALANTA
·
2026
·
IF 6.7
Zilei Guo,Mengjie Xue,Haitao Zhang,Xiguo Du,Ze Chen,Dong Zhao,Xing Guo,Shengbo Sang
Wearable flexible magnetoelastic sensor for non-invasive real-time uric acid detection in sweat. • Dual-sided functional film eliminates crosstalk between conductive and biorecognition layers. • Magnetic field amplification enables LOD = 1.2 μM and linear range 10–200 μM. • Custom microfluidic patch enables non-skin-contact sensing with efficient sweat management. • Portable detector (5 × 5 cm) shows high accuracy and valid in vivo real-time monitoring. Wearable non-invasive sensors enable continuous detection of uric acid in sweat, thereby facilitating the diagnosis of diseases related to renal and hepatic disorders. Nevertheless, the low uric acid content in human sweat and limitations of current sweat sampling strategies pose major challenges to the development of high-efficiency wearable uric acid sensors. Herein, we report a wearable flexible magnetoelastic (ME) sensor structurally integrated with a functional thin film based on PDMS/Chitosan/FeSiB/CNTs for monitoring uric acid in sweat. The integrated microfluidic patch designed in this work not only achieves sweat collection and directional drainage but also serves as a stable carrier to secure the thin film and magnet. Benefiting from the ME response of FeSiB magnetic particles incorporated inside the thin film, the sensing signal can be significantly amplified by an external magnetic field, which substantially enhances the detection sensitivity toward trace uric acid in sweat. Specifically, one side of the film is designed as a conductive layer, and the other side acts as a biomolecule-modified layer, ensuring that the two functional layers operate independently without mutual interference. Benefiting from this optimized structure, the proposed sensor was employed for testing in simulated sweat and in vivo human trials. Experimental results demonstrate the favorable performance of the sensor for real-time uric acid monitoring in sweat, with a detection limit of 1.2 μM and a wide linear detection range of 20–80 μM, and in the standard uric acid sample, the sensor showed a wider linear range of 10–200 μM, covering the physiological concentration range of uric acid in human sweat. Spiking tests in simulated sweat yielded recoveries from 94.1% to 114.3%, validating its high accuracy. The self-developed portable resistance measurement unit (5 × 5 cm) exhibited a mean relative error of only 0.34% compared with standard instruments, enabling reliable on-site measurement. In vivo tests on healthy volunteers further revealed distinct diurnal variations in sweat uric acid levels, confirming the sensor's great potential for non-invasive and real-time health management. The biosensor presents a promising avenue for uric acid monitoring using adaptable and user-friendly technologies. Download: Download high-res image (359KB) Download: Download full-size image
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