ADVANCED MATERIALS
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2013
·Vol. 25
·期 21
·2980-2983
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IF 14.829
Ye Tian,Yewen Cao,Yu Wang,Wuli Yang,Jiachun Feng
Graphical Covalently crosslinked graphene oxide papers (GOPs) with enhanced mechanical properties are prepared by a strategy involving crosslinking by means of intercalated polymers. The strength and modulus of the crosslinked GOPs increase by 115% and 550%, respectively, compared to the pristine GOPs. These results broaden the potential applications of graphene, and the crosslinking strategy will open the door to the assembly of other nanometer-scale materials.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
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2018
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IF 8.173
Yao Yao,Chengmei Jiang,Jianfeng Ping
Flexible sensing devices have drawn tremendous attention in the past decades due to their potential applications in future hand-held, potable consumer, and wearable electronics . Here, we firstly developed an ultrasensitive wireless potentiometric aptasensor based on flexible freestanding graphene paper for kanamycin detection. Flexible graphene paper made from a simple vacuum filtration method was used as a biocompatible platform for effective immobilization of aptamer. A nuclease-assisted amplification strategy was introduced into this potentiometric biosensing system in order to significantly improve the detection sensitivity through a classic catalytic recycling reaction of target induced by the nuclease (DNase I). As expected, an ultra-low detection limit of 30.0 fg/mL for kanamycin was achieved. Furthermore, the developed potentiometric enzymatic aptasensor exhibits high selectivity , favorable flexibility, excellent stability and reproducibility, which holds great promising for its routine sensing application.
研究领域:
生物传感技术
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分析化学
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DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Jinyang Wang,Yue Feng,Huiliang Zhang,Longhao Han,Jin Xia,Guangjian Wang
The surface-enhanced Raman scattering (SERS) technique provides a quick and reliable method for detecting pesticide residues. In this study, flexible substrates, composed of orderly arranged silver nanospheres (Ag NPs) films on graphene paper, were fabricated through a simple, low-cost Ag NP self-assembly process at a liquid–liquid interface, followed by transfer of the films onto the graphene paper. The SERS performance of the fabricated substrates was evaluated using a portable Raman spectrometer, with rhodamine 6G (R6G) serving as the probe molecule. The results indicate that the bilayer Ag NP films-covered graphene paper exhibits optimal overall performance, characterized by high sensitivity and high uniformity. The limit of detection (LOD) for the R6G molecule is as low as 8.73 × 10 −9 M, demonstrating the strong signal amplification capability of the SERS substrate. Moreover, the relative standard deviation (RSD) of the Raman intensity at 1508 cm −1 for different selected points on the substrate is 5.018 %, indicating high uniformity of the SERS substrate. Finally, the performance of the SERS substrate was further evaluated by detecting thiram in fresh orange juice, demonstrating the capability to detect concentrations as low as 10 −6 M. This result highlights the significant potential of the developed SERS substrate for practical applications in food safety and quality control.
研究领域:
材料科学
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分析化学
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食品安全
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DOI
PubMed
高影响因子
CARBON
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2017
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IF 6.337
Yan-Jun Wan,Peng-Li Zhu,Shu-Hui Yu,Rong Sun,Ching-Ping Wong,Wei-Hsin Liao
Large-sized graphene sheets (LG) and doping strategy were employed to fabricate lightweight and flexible graphene paper with exceptional electromagnetic interference (EMI) shielding performance. Compared with the smaller sized ones, LG with fewer defects and more conjugated carbon domain size as well as better alignment result in higher electrical conductivity and strength of graphene paper. The iodine doping further improves the carrier density of LG by formation of triiodide ( I 3 − ) and pentaiodide ( I 5 − ) through charge transfer process without deteriorating the mechanical property, thus leading to superior EMI shielding effectiveness (SE). The EMI SE of iodine doped LG film with thickness of 12.5 μm is up to ∼52.2 dB at 8.2 GHz, which is much higher than that of undoped LG with the same thickness (∼47.0 dB). More important, the improvements in EMI SE is contributed to the SE absorption, while the SE reflection is almost unchanged. The mechanisms of improved EMI shielding performance as well as mechanical property were investigated and discussed. The present study provides a facile way to fully develop graphene in lightweight and flexible EMI shielding materials and devices.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2025
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IF 8.9
Yanyun Li,Tiancheng Wang,Junying Zhang,Jue Cheng,Qingsong Lian
In recent years, thermal management technology based on phase change materials (PCMs) has provided a new solution for the development of wearable thermal management systems. However, because the high enthalpy value, flexibility, and multi-functional integration of PCMs are mutually restricted, most of the reported wearable thermal management materials cannot achieve the synergic development of flexibility at room temperature, multi-functionality, and heat storage capacity of PCMs. In this paper, a new type of flexible PCMs was prepared by using bio-based modified eugenol epoxy resin and lauric acid. It is worth noting that due to the flexibility of the epoxy network itself and its excellent compatibility with La, the final PCMs exhibit high encapsulation rate (80 wt%) and high enthalpy value (163.3 J/g). Finally, the PCMs were combined with graphene paper to prepare a composite film, which has excellent thermal conductivity (3.28 Wm −1 K −1 ), electromagnetic interference shielding property (42 dB), solar-thermal (86.7 %, 1000 W/m 2 ), and electro-thermal (89.3 %, 3.0 V) conversion and storage capabilities. Besides, the composite film not only has good flexibility at room temperature, but also shows excellent multi-mode shape memory performances. Last but not least, the composite film has great application potential in the field of wearable thermal therapy equipment.
研究领域:
材料科学
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热能工程
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柔性电子
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DOI
高影响因子
Scientific Reports
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2019
·Vol. 9
·期 1
·1-12
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IF 4.011
Ren Li,Wang Mengjie,Lu Shaorong,Pan Lulu,Xiong Zhongqiang,Zhang Zuocai,Peng Qingyuan,Li Yuqi,Yu Jinhong
As a two-dimensional material, graphene has attracted increasing attention as heat dissipation material owing to its excellent thermal transport property. In this work, we fabricated sisal nanocrystalline cellulose/functionalized graphene papers (NPGs) with high thermal conductivity by vacuum-assisted self-assembly method. The papers exhibit in-plane thermal conductivity as high as 21.05 W m −1 K −1 with a thermal conductivity enhancement of 403% from the pure cellulose paper. The good thermal transport properties of NPGs are attributed to the strong hydrogen-bonding interaction between nanocrystalline cellulose and functionalized graphene and the well alignment structure of NPGs.
研究领域:
材料科学
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热能工程
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
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2020
·
IF 6.215
Zeba Khanam,Jianghe Liu,Shenhua Song
Herein, an environmentally-benign, facile, efficient, low-cost, scalable fabrication process of achieving flexible graphene paper electrode at ambient conditions is reported. By means of high-shear exfoliation of graphite in aqueous polyvinyl alcohol (PVA), the graphene/PVA dispersion is prepared. Various characterizations (transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, etc.) confirm that the resulting dispersion is with the presence of high-quality, single to few-layered graphene sheets with thickness up to 1.68 nm, lateral size of 0.5–2 μm, and low defect density ( I D / I G = 0.09). Further, the applicability of the in-situ exfoliated graphene/PVA dispersion is demonstrated for the fabrication of flexible conductive paper electrodes through a simple intermittent soaking-drying approach. The graphene paper electrode possesses an electrical sheet resistance of 15 Ω sq −1 , without any additional annealing treatment and conductive additives. Finally, the graphene paper electrode is integrated with ionic-liquid incorporated PVA polymer electrolyte to develop the all-solid-state supercapacitor . It imparts a considerable specific capacitance of 222.96 F g −1 along with ~60% capacitance retention and ~100% coulombic efficiency after 6000 charge–discharge cycles. Meanwhile, the polymer electrolyte exhibits a remarkable ionic conductivity (4.63 × 10 −4 S cm −1 ) together with a wide electrochemical stability window (5.1 V), favorable for device applications. The unique interwoven nanoporous conductive network of PVA-stabilized exfoliated graphene provides fast diffusion pathways to electrolyte ions, thus significantly enhancing the charge-storage performance.
研究领域:
材料科学
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能源存储与转换
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DOI
高影响因子
COMPOSITES PART B-ENGINEERING
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2019
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IF 6.864
Zhi-Ran Yu,Shi-Neng Li,Jing Zang,Ming Zhang,Li-Xiu Gong,Pingan Song,Li Zhao,Guo-Dong Zhang,Long-Cheng Tang
Graphene oxide (GO) paper with outstanding integrated multiple functionalities (good mechanical performance, thermal stability and flame resistance, etc.) is strongly needed for numerous potential applications in cutting-edge fields. In this work, we report a facile and green process to fabricate GO-based nanocomposite papers via introducing functionalized silica (f-SiO 2 ) nanoparticles. The results reveal that addition of f-SiO 2 produces simultaneous improvements in mechanical strength , stiffness and flame resistance for GO paper. With incorporation of 10 wt% f-SiO 2 , the tensile strength , elastic modulus and toughness of the GO/f-SiO 2 nanocomposite papers can be increased by about 51%, 317%, and 69%, respectively. Various characterizations disclose that hydrogen bonds and covalent interactions between GO sheets and f-SiO 2 mainly contribute to the effective load transfer and energy dissipation between them, and thus leading to the improvements of mechanical properties . Based on the structural observation and analysis, the improved flame resistance of the GO/f-SiO 2 papers should be attributed to the formation of rGO/SiO 2 protective char, which are derived from the decomposition and redeposition of the grafted silane molecules and inorganic SiO 2 and thermal reduction of GO into rGO. Our results suggest that the mechanical and thermal properties of GO papers can be tuned by introducing inorganic/organic f-SiO 2 , providing a new route for the rational designing and development of mechanically flexible and flame-retardant GO-based nanocomposite paper materials.
研究领域:
材料科学
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纳米技术
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DOI
高影响因子
ACS Sensors
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2025
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IF 9.1
Xingchun Zhai,Haowen Guo,Xiaolu Li,Yongheng Zhang,Weiwei Cheng,Yitong Wang,Tan-Phat Huynh,Tao Wang,Fuzhen Xuan,Junjie Li,Guoyue Shi,Min Zhang
The study introduces a spatiotemporal chromatography-mimicking (SCM) e-nose that integrates laser-tailored graphene paper with a microchamber for precise volatile organic compound (VOC) discrimination. The SCM e-nose overcomes traditional array limitations with a single multifunctional component capable of accurate VOC differentiation via chromatography-mimic features. Advanced laser-engraving techniques fabricate a gas-permeable interdigitated electrode from graphene paper as the sieving framework. Key achievements include its single multifunctional component, economical and scalable design, distinct response patterns for different VOCs, remarkable ability to discriminate mixed VOCs, versatility for diverse applications including real-time on-site analysis, and ease of integration with electronic systems. The SCM e-nose represents a significant advancement in electronic nose technology, offering a compact, cost-effective solution for precise VOC detection and analysis.
研究领域:
传感器技术
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分析化学
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材料科学
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DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2020
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IF 3.408
Gongqing Chen,Bihe Yuan,Yuanyuan Zhan,Huaming Dai,Song He,Xianfeng Chen
Electrical fire is the most frequently occurred fire accident, and fire sensors with self-cutting and ultrasensitive fire-alarm response capability are urgent to be designed and developed. Herein, conductive reduced graphene oxide paper (RGOP) with hierarchical structure is prepared by a facile evaporation-assisted self-assembly of graphene oxide (GO) dispersion and then reduction by hydrazine hydrate vapor. The oxidative decomposition of RGOP containing sodium chloride (RGOP-NaCl) is promoted by the addition of NaCl. When being exposed to flame, RGOP-NaCl strips are readily ruptured. Based on this distinctive self-cutting performance of RGOP-NaCl under fire attacking, a novel fire detection and alarm device is designed by establishing controlling and operation circuits. Under fire encountering, an ultrafast warning response (approximately 5.3 s) of RGOP-NaCl is triggered. Fire-alarm time of RGOP-NaCl is adjustable by varying the content of NaCl. Furthermore, this RGOP-NaCl has the function of fuse and can cut off the conductive circuit timely under fire attacking. This finding will provide a novel thought for the design of advanced fire-alarm sensor and will also expand the application of graphene paper.
研究领域:
材料科学
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传感器技术
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2016
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IF 4.712
Anshun Zhao,Zhaowei Zhang,Penghui Zhang,Shuang Xiao,Lu Wang,Yue Dong,Hao Yuan,Peiwu Li,Yimin Sun,Xueliang Jiang,Fei Xiao
Recent advances in on-body wearable medical apparatus and implantable devices drive the development of light-weight and bendable electrochemical sensors, which require the design of high-performance flexible electrode system. In this work, we reported a new type of freestanding and flexible electrode based on graphene paper (GP) supported 3D monolithic nanoporous gold (NPG) scaffold (NPG/GP), which was further modified by a layer of highly dense, well dispersed and ultrafine binary PtCo alloy nanoparticles via a facile and effective ultrasonic electrodeposition method. Our results demonstrated that benefited from the synergistic effect of the electrocatalytically active PtCo alloy nanoparticles, the large-active-area and highly conductive 3D NPG scaffold, and the mechanically strong and stable GP electrode substrate, the resultant PtCo alloy nanoparticles modified NPG/GP (PtCo/NPG/GP) exhibited high mechanical strength and good electrochemical sensing performances toward nonenzymatic detection of glucose, including a wide linear range from 35 μM– to 30 mM, a low detection limit of 5 μM (S/N = 3) and a high sensitivity of 7.84 μA cm −2 mM −1 as well as good selectivity , long-term stability and reproducibility. The practical application of the proposed PtCo/NPG/GP has also been demonstrated in in vitro detection of blood glucose in real clinic samples.
研究领域:
材料科学
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生物医学工程
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分析化学
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DOI
PubMed
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 14
·2069
·
IF 5.3
Min Hu,Hu He,Fei Xiao,Chen Liu
The development of nanohybrid with high electrocatalytic activity is of great significance for electrochemical sensing applications. In this work, we develop a novel and facile method to prepare a high-performance flexible nanohybrid paper electrode, based on nitrogen-doped carbon (NC) wrapped Bi nanoparticles (Bi-NPs) assembly derived from Bi-MOF, which are decorated on a flexible and freestanding graphene paper (GP) electrode. The as-obtained Bi-NPs encapsulated by an NC layer are uniform, and the active sites are increased by introducing a nitrogen source while preparing Bi-MOF. Owing to the synergistic effect between the high conductivity of GP electrode and the highly efficient electrocatalytic activity of Bi-NPs, the NC wrapped Bi-NPs (Bi-NPs@NC) modified GP (Bi-NPs@NC/GP) electrode possesses high electrochemically active area, rapid electron-transfer capability, and good electrochemical stability. To demonstrate its outstanding functionality, the Bi-NPs@NC/GP electrode has been integrated into a handheld electrochemical sensor for detecting heavy metal ions. The result shows that Zn2+, Cd2+, and Pb2+can be detected with extremely low detection limits, wide linear range, high sensitivity, as well as good selectivity. Furthermore, it demonstrates outstanding electrochemical sensing performance in the simultaneous detection of Zn2+, Cd2+, and Pb2+. Finally, the proposed electrochemical sensor has achieved excellent repeatability, reproducibility, stability, and reliability in measuring real water samples, which will have great potential in advanced applications in environmental systems.Keywords:Bi nanoparticles;nitrogen-doped carbon;flexible and freestanding graphene paper electrode;electrochemical catalysis and sensing;heavy metal ions detection
研究领域:
材料科学
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环境科学
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分析化学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）