FIBERS AND POLYMERS
·
2020
·Vol. 21
·期 11
·2625-2634
·
IF 1.797
Chen Yuan,Wu Xiaoqing,Wei Junfu,Wu Hailiang
In order to nondestructively prepare polyamine modified polyethylene glycol terephthalate (PET) fabric, codeposition of catechol and polyethyleneimine onto PET fiber was conducted by the means of mussel-inspired method. The surface morphology, composition of woven fabric were investigated by FESEM and ATR-FTIR, XPS, respectively, whose results demonstrated successful modification has taken place on PET fiber surface. The TG-DSC data proved that the melting temperature and decomposition temperature increased from 253.78 °C and 394.08 °C to 255.01 C and 398.21 °C, respectively. The surface polarity was characterized through the dynamic contact angle. The results indicated that the fabric displayed optimal surface properties at the PEI-CA mass ratio of 1:1. The modified PET fabric was utilized to prepare the fiber reinforced epoxy composite and its mechanical performances including tensile, flexural and short beam shear strength were evaluated. The obtained results indicated that the interlaminar shear strength (ILSS) has been significantly improved by 57.02 %. The novel way to modify fabrics has great potential in recycling waste fabric for preparing fiber reinforced composite.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROANALYSIS
·
2019
·Vol. 32
·期 2
·412-421
·
IF 2.691
Kaiqian Wang,Yalin Cheng,Biyang Tu,Haisheng Tao
Ferrosoferric oxide functionalized graphene oxide nanocomposite with layer by layer structure was synthesized by isoelectric point method in this work. The prepared material was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. Then the material was used to modify a glassy carbon electrode to fabricate an electrochemical sensor for the detection of catechol. The electrochemical sensor exhibited excellent electrochemical performance towards the detection of catechol with a linear response in the range of 5–205 μM and a detection limit of 2.32 μM. Furthermore, the electrochemical sensor showed excellent selectivity, stability and repeatability. These results revealed ferrosoferric oxide functionalized graphene oxide nanocomposite has potential applications in the fabrication of electrochemical sensors.
研究领域:
材料科学
·
电化学
·
纳米技术
·
分析化学
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·127515
·
IF 4.386
Wenrui Zhao,Beibei Wang,Xueping Ji,Kai Kang,Bing Wang,Lin Wang,Jujie Ren
Herein, a novel electrochemiluminescence (ECL) sensor was developed using a dual signal amplification mechanism based on a typical HKUST-1 metal-organic framework, [Cu3(BTC)2(H2O)3, BTC=1,3,5-benzene tricarboxylate], CdS quantum dots (QDs) and multi-walled carbon nanotubes (MWCNTs) for ultrasensitive determination of catechol. HKUST-1 not only has a dispersion effect to carry more CdS QDs for enhancing stability, but also acts as effective catalyzer to accelerate the transformation of persulfate ion (S2O82−) for generating more sulfate radical anions (SO4•−), therefore amplifying the signal of the ECL sensor. Meanwhile, the introduction of MWCNTs to the ECL process could promote the electron transfer rate and accelerate the kinetics of the electro-catalytic reaction attributing to its stronger conductivity, achieving dual-amplifying effect, which could obviously increase the sensitivity of the ECL sensor. The proposed sensor displayed a wide linear range of 1 × 10−7 − 1 × 10−3 M and a low detection limit of 3.8 × 10−8 M with excellent stability, high repeatability and outstanding anti-interference ability under the optimal conditions. Impressively, the sensor possessed commendable feedback when detecting catechol in real samples. Therefore, this research provided a new strategy combining the advantages of MOFs, QDs and MWCNTs materials for phenolic pollutants detection.
研究领域:
分析化学
·
环境科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 132
·期 31
·
IF 1.768
Haitao Huang,Tao Yue,Yanyun Xu,Ke Xu,Haibo Xu,Shiyuan Liu,Jiahui Yu,Jin Huang
To enhance biocompatibility and physiological stability of hydrophobic MnO nanoparticles as contrast agent of T 1 -weighted magnetic resonance imaging (MRI), dopamine-functionalized poly(ethylene glycol) (PEG) was used to coat the surface of about 5 nm MnO nanoparticles. Although hydrophilic coating might decrease longitudinal relaxivity due to inhibiting the intimate contact between manganese of nanoparticle surface and proton in water molecules, higher longitudinal relaxivity was still maintained by manipulating the PEGylation degree of MnO nanoparticles. Moreover, in vivo MRI demonstrated considerable signal enhancement in liver and kidney using PEGylated MnO nanoparticles. Interestedly, the PEGylation induced the formation of about 120 nm clusters with high stability in storing and physiological conditions, indicating passive targeting potential to tumor and prolonged circulation in blood. In addition, the cytotoxicity of PEGylated MnO nanoparticles also proved negligible. Consequently, the convenient PEGylation strategy toward MnO nanoparticles could not only realize a good “trade-off” between hydrophilic modification and high longitudinal relaxivity but also contribute additional advantages, such as passive targeting to tumor and long blood circulation, to MRI diagnosis of tumor. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42360.
研究领域:
材料科学
·
医学影像学
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生物医学工程
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产品关联
DOI
高影响因子
ELECTROANALYSIS
·
2015
·Vol. 27
·期 9
·2221-2229
·
IF 2.138
Yancai Li,Shuqing Feng,Yanmei Zhong,Yuhui Li,Shunxing Li
Carboxyl functionalized graphene (CFG) self-assembled monolayers (SAMs) were constructed on the carboxylated glassy carbon electrode based on covalent interaction for simultaneous determination of hydroquinone (HQ) and catechol (CC). Scanning electron microscopy and electrochemical impedance spectroscopy results proved that the CFG SAMs was successfully formed with enhanced conductivity. According to electrochemical voltammetry experiments, the modified electrode showed excellent sensitivity and selectivity for HQ and CC. Under optimal conditions, the sensing platform showed wide linear response for HQ and CC with detection limit of 0.2 µM ( S/N =3) and 0.6 µM ( S/N =3), respectively. Moreover, the sensor also displays good reproducibility and stability.
研究领域:
分析化学
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材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
·
2015
·Vol. 52
·期 3
·283-289
·
IF 0.762
Wang Jinshou,Shi Zhen,Jing Jin,Tan Yanbing,Zhang Shenghui,Tian Dating
A three-dimensionally ordered macroporous (3DOM) polycysteine (PCE) film was electropolymerized on the glassy carbon electrode (GCE) using polystyrene spheres as template. The electrochemical behaviors of hydroquinone (HQ) and catechol (CC) were studied, and two independent oxidation peaks were observed. Compared with the bare GCE and GCE modified with PCE without using template, this electrode displays larger peak currents which may be attributed to the structure of PCE and the large surface area of the nanopore array structure. As a result, a novel electrochemical method was developed for the simultaneous determination of HQ and CC. Under the optimized conditions, the peak currents were linear to concentrations in the wider ranges of 9 to 700 μM for HQ and from 3 to 700 μM for CC. The method was successfully applied to the simultaneous determination of HQ and CC in spiked water samples, and the results are satisfactory.
研究领域:
分析化学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2014
·
IF 2.871
Shuqing Feng,Yayun Zhang,Yanmei Zhong,Yancai Li,Shunxing Li
A carboxylated multi-wall carbon nanotubes (CMWNTs) layer-by-layer (LBL) self-assembled film was prepared using ethylenediamine as an arm linker. Scanning electron microscopy (SEM) characterized the morphology of the LBL self-assembled film and Fourier transform infrared (FT-IR) spectroscopy confirmed the formation of covalent bond between CMWNTs and ethylenediamine. The electrochemical experiments indicated that the modified electrodes can simultaneously determinate hydroquinone (HQ) and catechol (CC). Differential pulse voltammetry (DPV) exhibited the oxidation peak current of HQ was linear to its concentration in the range of 10–120 μM with the detection limit of 2.3 μM in the presence of 0.1 mM CC, and at the same time the oxidation peak current of CC was linear to its concentration in the range of 5–80 μM with the detection limit of 1 μM in the presence of 0.1 mM HQ. Moreover, the CMWNTs modified electrode also showed excellent selectivity and stability.
研究领域:
分析化学
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Healthcare Materials
·
2021
·Vol. 11
·期 1
·2101421
·
IF 9.933
Zhipeng Ni,Haojie Yu,Li Wang,Xiaowei Liu,Di Shen,Xiang Chen,Jiyang Liu,Nan Wang,Yudi Huang,Yan Sheng
Wound dressings with excellent adhesiveness, antibacterial, self-healing, hemostasis properties, and therapeutic effects have great significance for the treatment of acute trauma. So far, numerous mussel-inspired catechol-based wet adhesives have been reported, opening a pathway for the treatment of acute trauma. However, catechol-based hydrogels are easily oxidized, which limits their applications. Here, the design of a polyphosphazene and non-catechol based antibacterial injectable hydrogel is reported as a multifunctional first aid bandage. Inspired by barnacle cement proteins, a series of dynamic phenylborate ester based adhesive hydrogels are prepared by combining the cation– π structure modified polyphosphazene with polyvinyl alcohol. The inherent antibacterial property (4 h antibacterial rate 99.6 ± 0.2%), anti-mechanical damage, and hemostatic behavior are investigated to confirm multi-functions of wound dressings. In water, the hydrogels firmly adhere to tissue surfaces through cation– π and π – π interactions as well as hydrogen bonding (adhesion strength = 45 kPa). Moreover, in vivo experiments indicate the hydrogels can shorten the bleeding time and reduce the amount of bleeding by 88%, and significantly accelerate the wound healing rate. These hydrogels have a promising application in the treatment of acute trauma, which is in urgent need of anti-infection and hemostasis.
研究领域:
生物材料学
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创伤治疗
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医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Qianghai Rao,Fang Xin Hu,Li-Yong Gan,Chunxian Guo,Yuhang Liu,Chunmei Zhang,Chongjun Chen,Hong Bin Yang,Chang Ming Li
Quantitatively simultaneous detection of hydroquinone (HQ) and catechol (CC) with low limit of detection (LOD) and wide detection range is of critical significance in water quality control but faces great challenges due to their isomer similarity and a large range of contamination concentrations . Herein, high density of boron atoms is introduced into nitrogen-doped nanocarbon (BNC) to realize simultaneous detection of HQ and CC with a large separation of peak potential (Δ E p ) of 111 mV between oxidations of HQ and CC by differential pulse voltammetry . Besides, extremely low LODs of 33.3 and 16.3 nM for HQ and CC were achieved through amperometric I - t curve with wide linear ranges of 0.099 ∼ 43340 µM and 0.049 ∼ 5110 µM, respectively. The systematical investigation of the enhancement mechanism by spectroscopy and DFT calculations clearly reveal that the boron-nitrogen co-doping creates rich electroactive sites for high sensing performance toward HQ and CC, thereby shedding lights on the great effect of a unique nanostructure on electrocatalysis in sensing applications.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 7
·077517
·
IF 4.316
Ziyu Zhao,Jialun Luo,Simon Tricard,Jihua Zhao,Qiangming Wang,Jian Fang
The development of effective and accurate catechol (CC) electrochemical sensors is critical for environment and life health perspectives. A facile pyrolysis of 2D bimetallic (Zn/Co) zeolitic imidazolate framework (Zn/Co-ZIF-L) was employed to prepare Zn and Co nanoparticles encapsulated in N-doped porous carbon (Zn/Co@NPC). Prussian blue (PB) was synthesized in situ via the co-precipitation of ferricyanide ([Fe(CN)6]3−) and iron (II) ion originated from the reduction of Fe3+ by Zn/Co@NPC and then served as the main active substance of CC detection. The morphology and composition of the final composite Zn/Co@NPC-PB were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD). The Zn/Co@NPC-PB modified glass carbon electrode (GCE) exhibits two concentration linear ranges of 4.13 μM − 1.08 mM (R2 = 0.999) and 1.08 mM−11.82 mM (R2 = 0.999) for CC electrochemical detection with a limit of detection 1.05 μM (S/N = 3). At the same time, the Zn/Co@NPC-PB/GCE shows great selectivity to electrochemical oxidation behavior of CC in presence of 20 folds dihydroxybenzene interferents such as hydroquinone and resorcinol. Furthermore, it showed a long-term stability and near 100% recovery for the detection of a real sample in Yellow River water.
研究领域:
环境科学
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材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 25
·11523-11536
·
IF 4.682
Fan Zi-Chun,Wei Xian-Yong,Tong Zhi-Wei,Wang Hao-Ran,Zong Zhi-Min
Catechol shows a wide range of applications in real life, but it has been considered as an organic pollutant due to its potential harm to the ecological environment and human health, so the monitoring of catechol is particularly important. In this work, an electrochemical sensor for the detection of catechol was developed based on an organic/inorganic layered nanocomposite polyaniline/strontium niobate (PANI/HSr 2 Nb 3 O 10 ) synthesized by in situ polymerization. Some characterization methods such as X-ray diffraction patterns, scanning electron microscope, high-resolution transmission electron microscope, X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy were systematically used to evaluate the structure, composition, and morphology of the as-prepared samples. Compared with other single component modified electrodes, PANI/HSr 2 Nb 3 O 10 /GCE can accelerate the electron transfer ability and possess larger electroactive surface area due to the synergistic effect of PANI and HSr 2 Nb 3 O 10 , which resulted in enhanced electrocatalytic activity toward catechol. A pair of well-defined redox peaks observed on PANI/HSr 2 Nb 3 O 10 /GCE correspond to the redox process of catechol, the mechanism of which is a reversible conversion between catechol and quinone. Under optimized conditions, the differential pulse voltammetry was performed for the detection of catechol, and the detection limit of 0.02 μM was obtained in the concentration range of 0.025–4.97 mM. Additionally, the developed electrochemical sensor also exhibits satisfied repeatability, long-term stability, reproducibility, and anti-interference and shows practicality in environmental water samples, which further reveals the feasibility of the sensor for practical applications.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Huanling He,Shiwen Lv,Ying Kang,Jiaxin Yi,Yi Zhang,Yanqing Cong
Herein, for the first time, a self-supported electrode for simultaneous determination of hydroquinone (HQ) and catechol (CA) was synthesized by loading NiCoFe-layered double hydroxide nanoflowers on hydrophilic carbon cloth (NiCoFe-LDH NFs/CC) with a simple hydrothermal method. By combining the advantages of NiCoFe-LDH NFs with hydrophilic carbon cloth such as good conductivity, 3D porous network structure, high electrocatalytic activity, and fast electron transport, the proposed NiCoFe-LDH NFs/CC electrode dispalyed good electrochemical activity for detecting HQ and CA. The binder-free and free-standing electrode based on NiCoFe-LDH NFs/CC possessed good linear range (5–200 μM), low determination limit (0.15 μM and 0.11 μM), and strong selectivity. Furthermore, it also showed good electrochemical stability without obvious change in ten days. More importantly, as-prepared electrode could be used as an efficient electrochemical sensor to determine HQ and CA content in actual samples with good recovery rate, revealing its feasibility in potential application.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 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）