COMPOSITES PART B-ENGINEERING
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2024
·
IF 12.7
Yong-song Tan,Weiyi Han,You Wu,Dajiang Kuang,Liyang Song,Chaoxia Wang
The development of wearable gesture recognition systems, capable of converting intricate human gestures into electric signals and graphical representations , poses significant challenges for future advancements in health monitoring and human-machine interfaces. In response to this demand, we present an approach centered on a cell-inspired, multiscale hierarchical structural piezoresistive pressure sensor designed for gesture recognition applications. The breathable, hierarchically interlocked textile pressure sensor (PFPA), featuring a SWCNTs/polyvinylpyrrolidone (PVP)/reduced graphene oxide (rGO) dendritic structure combined with a PANI/PVA cylindrical array, exhibits remarkable properties. The dendritic electrodes, composed of SWCNTs and PVP in a 1:2 ratio, maintain optimal regularity. Meanwhile, the cylindrical PANI/PVA array is meticulously engineered with a radius of 200 μm, a height of 200 μm, and an inter-cylindrical spacing of 150 μm. The PFPA demonstrates an unprecedented ultrahigh sensitivity of 80.8 kPa −1 across a pressure range of 0–5 kPa, coupled with a rapid response time of 150 ms and minimal hysteresis of 16.1 %. The PFPA also demonstrates outstanding repeatability, with no significant performance degradation observed after 4000 cycles. By correlating the bending angles of finger joints with resistance changes, we successfully integrated these sensors into a glove, enabling precise gesture recognition. The multilayer SWCNTs/PVP/rGO dendritic and PANI/PVA cylindrical array pressure sensor exhibits superior sensing performance and accurate posture capture. This demonstrates its significant potential for applications in wearable electronics and intelligent devices, marking a substantial advancement in the field.
研究领域:
材料科学
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生物医学工程
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可穿戴设备
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yang Yang,Zheng Xiu,Fei Pan,Hongsheng Liang,Haojie Jiang,Hongtao Guo,Xiao Wang,Lixin Li,Bin Yuan,Wei Lu
Hierarchical microarchitecture engineering is a state-of-the-art approach to designing aerogel electromagnetic (EM) wave absorbers, offering huge potential in improving EM energy dissipation. However, the intrinsic feedback mechanism regarding the specific influence of each microarchitecture parameter on EM properties is not comprehensively revealed, making it challenging to fully utilize the potential of aerogels to achieve superior EM wave absorption performance. Herein, a range of MXene/rGO-based aerogels with multilevel hierarchical configurations are fabricated by a magnetic field-guided strategy. Leveraging growth thermodynamics effects under a magnetic field and bridging effect between adjacent rGO units, three hierarchical microarchitecture models (lamellae ordering, interlayer spacing, and layer thickness) are constructed in aerogels. Remarkably, three models progressively improve reflection loss ( RL ), effective absorption bandwidth (EAB), and matching thickness by enhancing dielectric loss, decoupling attenuation-impedance matching, and adjusting power loss density, respectively. Consequently, the MXene/rGO-based aerogels exhibit stepwise enhancement in EM wave performance, achieving a superior RL of −64.6 dB and a broad EAB of 7.0 GHz at 1.8 mm thickness, surpassing alternative aerogels with other configurations. This work elucidates the effect of multilevel hierarchical microarchitecture on the synergistic multi-effect dissipation mechanism of EM waves in aerogels, providing insights for designing advanced EM absorbers through diverse strategies.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Xue Qi,Hongmin Gao,Lei Wu,Yang Zhou,Hehua Zhang,Dong Chang,Hongzhi Pan
Accurate and sensitive detection of the neurotransmitter dopamine (DA) plays a significant role in medical diagnosis and human health assessment. Herein, an electrochemical sensing platform for ultrasensitive determination of DA was constructed based on porous Co 3 O 4 nanocubes anchored to three-dimensional Ti 3 C 2 MXene-reduced graphene oxide aerogel (Co 3 O 4 /3D MX-rGO). The 3D MX-rGO aerogel with a high specific surface prevents aggregation of Co 3 O 4 nanocubes and exposes more active sites, resulting in excellent electrocatalytic activity and outstanding sensing properties. The electrochemical reaction kinetic was investigated in detail, a possible sensing mechanism was proposed, and the interaction mechanism between the composites and DA was revealed combined with density functional theory (DFT) calculations. Under optimized experimental conditions, the sensor developed using Co 3 O 4 /3D MX-rGO modified glassy carbon electrodes (GCE) exhibited low detection limits (40 nM) in the range of 0.1–300 μM for DA with good selectivity, reproducibility, and stability. The sensor has been successfully use to detect DA in human serum and urine samples with recoveries of 95.3 %-103.7 %, which has great potential for practical applications.
研究领域:
生物医学工程
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材料科学
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分析化学
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产品关联
DOI
高影响因子
RSC Advances
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2024
·Vol. 14
·期 3
·2088-2101
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IF 3.9
Yanling Lv,Shixiang Lu,Wenguo Xu,Yulin Xin,Xiaoyan Wang,Shasha Wang,Jiaan Yu
Novel 2D material-based supercapacitors are promising candidates for energy applications due to their distinctive physical, chemical, and electrochemical properties. In this study, a dandelion-like structure material comprised of Sm2O3, Co3O4, and 2D reduced graphene oxide (rGO) on nickel foam (NF) was synthesised using a hydrothermal method followed by subsequent annealing treatment. This dandelion composite grows further through the tremella-like structure of Sm2O3 and Co3O4, which facilitates the diffusion of ions and prevents structural collapse during charging and discharging. A substantial number of active sites are generated during redox reactions by the unique surface morphology of the Sm2O3/Co3O4/rGO/NF composite (SCGN). The maximum specific capacity the SCGN material achieves is 3448 F g−1 for 1 A g−1 in a 6 mol L−1 KOH solution. Benefiting from its morphological structure, the prepared composite (SCGN) exhibits a high cyclability of 93.2% over 3000 charge–discharge cycles at 10 A g−1 and a coulombic efficiency of 97.4%. Additionally, the assembled SCGN//SCGN symmetric supercapacitors deliver a high energy density of 64 W h kg−1 with a power density of 300 W kg−1, which increases to an outstanding power density of 12 000 W kg−1 at 28.7 W h kg−1 and long cycle stability (80.9% capacitance retention after 30 000 cycles). These results suggest that the manufactured SCGN electrodes could be viable active electrode materials for electrochemical supercapacitors.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
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2024
·
IF 8.9
Xiling Mao,Hao Liu,Jianhua Xu,Mengwei Li,Wenyao Yang
The rational surface reconstruction of component heterointerfaces is an effective strategy for boosting the electrochemical activity and structural stability of asymmetric supercapacitors. In this study, a Co 3 O 4 /rGO (cobalt oxide/reduced graphene oxide(rGO)) heterostructure was designed using a hydrothermal and annealing strategy. Owing to its abundant electroactive sites, accelerated diffusion reaction kinetics, and strong OH − adsorption capability, the optimized Co 3 O 4 /rGO composite delivered an ultrahigh capacitance of 273.3 F/g at 1 A/g. Additionally, density functional theory (DFT) calculations verified the significant charge transfer from Co 3 O 4 to rGO near the heterointerface, achieving obvious charge redistribution and the formation of a space-charge layer. This optimization enhances significantly optimizes OH − adsorption and diffusion and improves electrical conductivity, leading to the excellent electrochemical performance of the surface-reconstructed Co 3 O 4 /rGO. More importantly, the all-solid-state asymmetric supercapacitor Co 3 O 4 /rGO//AC (activated carbon) demonstrated an exceptional energy density of 16.47 Wh/kg at a power density of 599 W/kg, along with excellent cycling stability, retaining 91.0 % capacitance after 5000 cycles. Overall, this study provides an effective approach for designing surface-reconstructed heterointerfaces to achieve remarkable electrochemical performance and ensure structural integrity, showcasing significant potential for practical applications in the energy storage market.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
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2025
·
IF 6.7
Zhiwei Zhou,Junyan Chen,Haikuan Yu,Yuantian Zhao,Xing Li,Jiawei Ren
Secondary effluent organic matter (EfOM) significantly contributes to membrane fouling in ultrafiltration (UF) systems, which limits their broader use in municipal wastewater recycle. A modified ceramic ultrafiltration membrane (MCUM) was synthesized via vacuum filtration and thermal treatment and then activated under ultraviolet (UV) irradiation. The results indicated that the MCUM-2.88 exhibited the most excellent removal of EfOM, effectively retained high molecular weight (MW) proteinaceous substances, and converted medium MW humic-like compounds into lower MW derivatives. Through parallel factor analysis in conjunction with the self-organizing map algorithm, it was observed that the MCUM primarily degraded aromatic, high MW fluorescent components, while tryptophan-like substances remained as dominant residues due to their resistance to photodegradation. Additionally, the improved surface roughness and hydrophilicity of the MCUM facilitated fouling mitigation by strengthening interfacial repulsion, which diminished foulant adhesion. The fouling mechanism transitioned from complete and intermediate blocking to predominantly intermediate blocking, accompanied by a reduction in gel layer fouling. Consequently, the reversible fouling resistance of the MCUM was reduced by 76.8 %, and the irreversible resistance by 34.3 %, markedly enhancing antifouling performance. The results underscore the effectiveness of MCUM in advanced municipal wastewater treatment, showcasing enhanced antifouling performance and strong potential for sustainable water reuse applications.
研究领域:
环境工程
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膜科学
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水处理
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催化
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Wenli Bao,Yuanjun Liu,Xiaoming Zhao
To solve the problem of electromagnetic radiation pollution, it is especially important to develop electromagnetic wave-absorbing materials with excellent performance. The preparation of composite multifunctional textile materials with excellent wave-absorbing properties is one of the research hotspots for practical personal protection applications. In this work, PPy/Fe 3 O 4 /rGO polyester/cotton composite fabrics were prepared by impregnation, chemical reduction, chemical co-precipitation and in situ polymerization. When the thickness is 0.97 mm, the minimum reflection loss ( RL min ) of PPy/Fe 3 O 4 /rGO polyester/cotton composite fabric is −12.12 dB, and the effective absorption bandwidth (EAB) is 4.7 GHz, which is excellent in wave absorption. Meanwhile, the PPy/Fe 3 O 4 /rGO polyester/cotton composite fabrics have excellent UV resistance (UV transmittance ratio of UVA and UVB bands as low as 0.02 %, UPF value of 100+), antistatic properties (static voltage half-life of 0.2 s), and excellent thermal management properties (thermal conductivity as low as 0.05796 W/(m·K)), and so on. The PPy/Fe 3 O 4 /rGO polyester/cotton composite fabrics prepared in this study are suitable for a variety of application scenarios, such as individual electromagnetic protection, individual protection in extremely cold environments, and individual heating physiotherapy, which is of great reference significance for the research of wearable individual protective textile materials.
研究领域:
材料科学
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纺织工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Jiaxin Liu,Mingdi Pan,Jiuzeng Jin,Yunshu Lu,Zhongmin Feng,Ting Sun
17β-E2 was the most active sterol estrogen and was widely used in animal husbandry for animal fattening and increasing milk production. Its abuse has resulted in residues in the environment. However, even very low concentrations could still enter the human body through the enrichment of the food chain and have adverse effects on the endocrine system. The SERS analysis method was employed in this work for the trace detection of 17β-E2 in environmental water. Cheap Ag NPs were selected as SERS sources. MoS2 provided a platform for the orderly arrangement of Ag NPs while making the material self-cleaning. rGO was coated in the outermost layer and had a protective effect on Ag NPs and could avoid oxidation during storage and use. At the same time, the target molecule could be adsorbed to reduce the distance between itself and Ag NPs, thus enhancing the SERS signal. The material had a high SERS enhancement factor (EF = 1.95 × 107), low detection limit (LOD = 5 × 10–12 M), good linear relationship (R2 = 0.994), good stability (RSD = 4.74%), and strong anti-interference ability. The recovery of 17β-E2 in farm wastewater samples was 100.15–108.00% and RSDs were 1.09–2.57%.
研究领域:
环境科学
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分析化学
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生物医学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Junyu Lu,Xiaochuang Di,Mushan Yuan,Binbin Sun,Cuiqing Zhou,Yinfu Luo,Yang Chen,Huawei Zou
Achieving broad effective absorption bandwidth (EAB) with minimal weight gain in aramid honeycomb (HC) remains a significant challenge. This study successfully prepared crosslinked PVA/RGO foam in situ-filled aramid HC composites using freeze-drying and low-temperature chemical reduction processes. By adjusting the GO content, partial to complete encapsulation of the PVA framework by RGO sheets could be achieved, and all samples exhibited a dense framework network structure as seen in the SEM. The [email protected] /0.4Vc foam filled HC achieves a broadband EAB of 12.74 GHz at a thickness of 30 mm. Such foam samples can also achieve effective absorption at 1.19–2 GHz. The foam filled honeycomb further increases the compressive strength to 5.24 MPa compared with pure HC. Obvious overlap between the CST electric field distribution demonstrates that the conductive loss and λ/4 interference cancels are the main pathways of MA. Overall, the PVA/RGO foam-filled HC composites exhibit ultra-broadband microwave absorption performance with enhanced structural compressive strength , which has significant feasibility and application value in aerospace stealth structures.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
SOFT MATERIALS
·
2024
·
IF 1.6
Jing Wang,Shaopeng Lv,Xinchen Gui,Yadong Yu
Developing innovative packaging films is of great significance for extending the shelf-life of perishable fruit. In this study, we successfully synthesized antibacterial composites by incorporating Fe into reduced graphene oxides (rGO) and MoS2. The resulting rGO-MoS2-Fe2O3 composites demonstrated effective inhibition against E. coli and S. aureus. After investigating the antibacterial mechanism of rGO-MoS2-Fe2O3 composites, we utilized carboxymethyl cellulose (CMC) as a film substrate to create CMC films infused with rGO-MoS2-Fe2O3 composites. The incorporation of rGO-MoS2-Fe2O3 composites decreased the light transmittance and hygroscopicity of CMC films, while greatly enhancing the mechanical properties of CMC films. To evaluate the practical applications of these rGO-MoS2-Fe2O3-based CMC films, we conducted a strawberry preservation experiment, which revealed that CMC films supplemented with 5 wt% rGO-MoS2-Fe2O3 exhibited exceptional performance in preventing weight loss and maintaining total titratable acidity levels in strawberries. These findings highlighted the promising potential of rGO-MoS2-Fe2O3-based CMC films for fruit preservation applications.
研究领域:
材料科学
·
食品科学
·
生物技术
·
农业工程
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2024
·Vol. 30
·期 4
·2345-2355
·
IF 2.4
Zhang Yi,Liu Yanmeng,Xu Wanzhen,Huang Weihong,Chen Ting,Ding Hua,Wang Baozhi,Yang Wenming
In recent years, the detection and monitoring of cadmium (Cd(II)) have gained considerable attention due to its widespread applications in various industries, such as electronics, batteries, and coatings, and its classification as a highly hazardous pollutant. This study presents the development of a novel electrochemical sensor based on ion-imprinted polymers (IIPs) and reduced graphene oxide-titanium oxide (rGO@TiO 2 ) for the selective and sensitive detection of Cd(II). Under optimized experimental conditions, the electrochemical sensor displayed a satisfactory linear relationship in the concentration range of 10 −8 to 10 −5 mol L −1 , with a lowest detection limit of 1.2 × 10 −8 mol L −1 . The sensor exhibited excellent repeatability, stability, high sensitivity, and strong selectivity. Finally, the electrochemical sensor was successfully applied to determine trace Cd(II) in practical samples. This novel electrochemical sensor based on IIPs and rGO@TiO 2 holds great potential for practical applications in environmental monitoring and pollution control, providing a promising tool for the accurate and efficient detection of hazardous pollutants like Cd(II).
研究领域:
环境科学
·
分析化学
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材料科学
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电化学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xunzhi Deng,Ze Liao,Jing Lu,Haiou Li,Xianxin Zhu,Yilin Liu,Qinyao Li,Danyi Deng,Chao Huang,Zhoufei Luo
The presence of alkylphenolic residues in vegetables could pose a potential food safety risk for humans. The residues of alkylphenols in bean sprouts have not been reported. Magnetic dispersion solid phase extraction (MD-SPE) followed by ultra performance liquid chromatography-tandem mass spectrometry was developed for detecting alkylphenol residues in sprouts. The Fe 3 O 4 @rGO@poly 3-aminophenol composite was first synthesized and used as an effective and regenerate adsorbent for MD-SPE. This method features minimal use of organic reagents, high extraction efficiency, easy recovery via magnetic separation, and the reusability of the adsorbent. The magnetic composite was characterized using X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. For optimization of the extraction process, the Plackett-Burman factorial design was employed to to fine-tune multiple parameters of MD-SPE. Additionally, the sensitivity of UPLC-MS/MS enabled the precise quantification of alkylphenols in the sprout samples. This analysis yielded high linearities (R 2 > 0.9989) and recoveries (90.4 %–108.5 %) at three different spiked levels. a minimal matrix effect (7.5 %–12.4 %), impressive limits of detection (0.89–13.62 pg/mL), and reliable reproducibility (intra-day: 2.0 %–13.5 %; inter-day: 0.7 %–11.6 %) were obtained. Thus, a new method was successfully employed for analyzing alkylphenolic residues in vegetables samples, making it a valuable tool for ensuring food safety.
研究领域:
食品安全
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）