JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Yinqi Xu,Yuanjie Yu,Shan Xue,Xiaoyu Ma,Haisheng Tao
An innovative electrochemical sensor was developed based on the modification of a glassy carbon electrode (GCE) surface with graphene oxide aerogel (GA) wrapped copper centered metal-organic framework (Cu-MOF) and was applied to the detection of trace catechol (CT). The morphology, structure of GA/Cu-MOF and electrochemical properties of GA/Cu-MOF/GCE were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and electrochemical techniques, respectively. GA/Cu-MOF/GCE has a wide linear range of 12.5–900 μmol∙L −1 ( R 2 = 0.997) and a low limit detection of 1.65 μmol∙L −1 . Compared with the unmodified GCE, GA/Cu-MOF/GCE shows better stability, greater sensitivity and higher repeatability. Importantly, this new modified material was successfully prepared and used for the detection of trace amounts of catechol, providing a new idea for electrochemical detection.
研究领域:
电化学
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材料科学
·
分析化学
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产品关联
DOI
高影响因子
TALANTA
·
2023
·
IF 6.1
Yongzhe Niu,Kai Kang,Beibei Wang,Lanyue Wang,Congwei Li,Xiang Gao,Zhenzhen Zhao,Xueping Ji
Single-atom nanozymes (SANs) can significantly enhance the sensitivity and selectivity of electrochemical sensing platforms due to the homogeneity of their active sites, full atom utilization, and high catalytic activity. In this study, we demonstrate the synthesis and characterization of a high-density Co-based single-atom nanozyme anchored on activated MOF-derived porous carbon (Co-AcNC-3) via a cascade anchoring strategy for ultrasensitive, simultaneous electrochemical detection of catechol (CC) and hydroquinone (HQ). The Co-AcNC-3 displays a large specific surface area , high defectivity, and abundant oxygen-containing groups, with Co atoms being atomically dispersed throughout the carbon support via Co–N bonds. The Co-AcNC-3 biosensor exhibits superior electrochemical signals for CC and HQ, with linear ranges of 4.0 μM–300.0 μM. and detection limits of 0.072 μM and 0.034 μM, respectively. Moreover, the Co-AcNC-3 biosensor has shown excellent performance in accurately detecting CC and HQ in actual samples. Our findings highlight the potential of the proposed Co-AcNC-3 biosensor as a reliable and promising sensing platform for determining CC and HQ.
研究领域:
分析化学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Shuxing Zhou,Yin Wang,Wenyu Cao
The miniaturization and autonomous mobility of the artificial micro-composite have gained widespread interest and attention in the field of catechol treatment. Unfortunately, it is a bottleneck for micro-composite in realizing the integration of multiple functions such as colorimetric detection and removal of catechol. Herein, we construct a Janus micro-composite with dual functions of detection and degradation for the efficient detection and removal of catechol. The Janus micro-composite for laccase immobilization was prepared by growing manganese dioxide nanoparticles (MnO 2 NPs) on the hemisphere of copper sulfide (CuS) loaded with carbon (C) dots (Lac-MnO 2 @C@CuS). The half-coated MnO 2 NPs is used as a power source to generate oxygen (O 2 ), which drives the Janus micro-composite for autonomous directional motion at a speed of 178.83 ± 2.07 μm/s in the presence of 5 wt% H 2 O 2 . The Janus micro-composite with excellent peroxidase-like properties could display sensitive detection of catechol with the detection limits of 0.49 μM in range of 0–100 μM. Furthermore, the Janus micro-composite could decompose H 2 O 2 to produce abundant reactive oxygen species (ROS) through Fenton reaction , which could promote the removal rate of catechol up to 96.6%. This is a promising micro-composite platform for integrated autonomous movement and simultaneous detection/removal of catechol, which can provide a new perspective for water environment treatment.
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DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xiangwei Yuan,Yao Jin,Junchun Guo,Qain Wang,Li Xu,Yongjiao Song,Xiaoli Xiong
N-doped hollow carbon spheres loaded with Cu single atoms (Cu SAs/N-CSs) were prepared via an in situ hard-template method. As an electrode catalyst, the Cu SAs/N-CSs electrochemical-sensing properties to hydroquinone (HQ) and catechol (CC) were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV), and the linear detection ranges of HQ and CC were 1–324 and 1–123 μM, respectively; the detection limits are 0.33 and 0.17 μM, respectively. The experimental and DFT calculation results show that Cu SAs/N-CSs have stronger adsorption strength and more effective affinity for CC and HQ due to the synergistic effect of dispersed Cu SAs and N-CSs, thus improving the electrocatalytic and sensing properties of CC and HQ. Furthermore, the prepared electrode has been successfully applied to the simultaneous determination of HQ and CC in practical water samples with satisfactory results.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
POWDER TECHNOLOGY
·
2022
·
IF 5.64
Erqiang Sun,Yongjian Jiang,Bohui Wang,Xiaorong Wang,Fengyang Zhao
Herein, a novel catechol-polyethyleneimine (CCh-PEI) nano/submicro-particles (CP-NPs) was synthesized via a facile mussel-inspired co-precipitation method for highly efficient methyl orange (MO) removal. The as-synthesized CP-NPs were characterized by FT-IR, SEM, TEM , EDS , XRD , TGA , Zeta potential , and BET. The adsorption properties result indicated that the optimum adsorption capacity of CP-NPs was obtained at a CCh/PEI mass ratio of 5:1. Kinetic and adsorption isotherm studies showed that the adsorption process of CP-NPs followed the pseudo-second-order model and the Langmuir isotherm model, respectively. The theoretical maximum monolayer adsorption capacity was 1392.68 mg g −1 at 303 K, which was higher than most previously reported adsorbents. Meanwhile, the adsorption was a spontaneous and exothermic process according to thermodynamic studies. In addition, the CP-NPs exhibited excellent adsorption capacity even after eight times regeneration. Thus, it suggests that CP-NPs is expected to be an economical and efficient adsorbent for MO removal.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2015
·
IF 4.097
Yi Hong Huang,Jian Hua Chen,Xue Sun,Zhen Bo Su,Hai Tao Xing,Shi Rong Hu,Wen Weng,Hong Xu Guo,Wen Bing Wu,Ya San He
Facile and stable nanocomposites, carbon nanocages (CNCs)-reduced graphene oxide (RGO), were developed via one-pot in situ solvothermal reaction in this study. Transmission electron microscope, scanning electron microscope, X-ray diffraction, Raman spectroscopy, energy dispersive X-ray spectroscopy, atomic focus microscope, N 2 adsorption/desorption isotherms, thermogravimetric analysis and Fourier-transform infrared were performed to characterize the CNCs-RGO hybrid material. The electrochemical detections of catechol (CC) and hydroquinone (HQ) were investigated by means of cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The excellent electrocatalytic activity and reversibility have been shown on the modified electrode toward oxidation of both CC and HQ in 0.04 M acetate buffer solution (pH = 4.0). The relationship between the oxidation peak current of CC and its concentration was linear over the range from 1 to 400 μM in the presence of 100 μM HQ, and the linear relationship between the oxidation peak current of HQ and its concentration can be obtained range from 1 to 300 μM in the presence of 100 μM CC. The detection limits (S/N = 3) for CC and HQ were 0.40 and 0.87 μM, respectively.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 12
·6801-6806
·
IF 3.119
Pengyu Xiao,Yang Liu,Wenjing Zong,Jin Wang,Minghuo Wu,Jingjing Zhan,Xianliang Yi,Lifen Liu,Hao Zhou
Multiple enzyme-like activities of manganese oxides (MnO2) have been reported and applied in catalysis, biosensors, and cancer therapy. Here, we report that catechol can be determined colorimetrically based on the 3,3′,5,5′-tetramethylbenzidine (TMB) oxidase-like activity of δ-MnO2. The detection was based on pre-incubation of catechol containing water samples with δ-MnO2, and then the residual TMB oxidase-like activity of reacted δ-MnO2 was linearly dependent on the catechol concentration in the range of 0.5 to 10 μM. This determination method was stable at pH 3.73–6.00 and was not affected by ion strength up to 200 μM. Common co-solutes in water bodies (50 μM) have negligible effects and excellent selectivity of catechol among various phenolic compounds (15 μM) was facilitated. Both reduction and aggregation of δ-MnO2 were observed during the incubation process with catechol, and aggregation-induced TMB oxidase–mimic activity decrease was the main factor for this colorimetric determination.
研究领域:
分析化学
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环境科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Zhiqiang Zheng,Shaoquan Bian,Zhiqiang Li,Zhiyang Zhang,Yuan Liu,Xinyun Zhai,Haobo Pan,Xiaoli Zhao
Wound dressings based on injectable thermo-sensitive hydrogel possess several advantages over preformed conventional dressings such as rapid reversible sol-gel transition behavior and the capacity of filling the irregular wound defect. Nevertheless, its clinical application is hindered by the weak tissue adhesiveness. Therefore, in this study, the catechol modified quaternized chitosan (QCS-C) was fabricated and incorporated into poly(d,l-lactide)-poly(ethylene glycol)-poly(d,l-lactide) (PLEL) hydrogel to develop an injectable hydrogel with the properties of thermo-sensitive, antibacterial and tissue adhesive . QCS-C could lower the LCST of hydrogel for easy gelation at physiological temperature, and significantly enhanced the tissue adhesion. For wound generation, nano-scaled bioactive glass (nBG：80 SiO 2 , 16 CaO and 4 P 2 O 5 ; mol%) was loaded into hydrogel to promote angiogenesis. The mice partial laceration experiment showed that PLEL-nBG-QCS-C hydrogel could effectively seal the ruptured skin and significantly accelerate wound healing. Thus, our findings established a new type of clinical treatment technology for complicated wounds.
研究领域:
生物材料学
·
医学工程
·
药剂学
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Stanislas Nsanzamahoro,Félicité Pacifique Mutuyimana,Yangxia Han,Sudai Ma,Min Na,Juanjuan Liu,Yunxia Ma,Cuiling Ren,Hongli Chen,Xingguo Chen
Because the chemical properties and structures of catechol and its analogues (hydroquinone and resorcinol) are similar, it still is a great challenge to detect catechol from other hydroxybenzene isomers with high accuracy and reliability. Herein, a selective and sensitive method based on the water soluble silicon nanoparticles (Si NPs) was established for catechol detection, and to the best of our knowledge, this is the first time using Si NPs for catechol measurement. The synthesis of Si NPs was very cheap and simple, no time-consuming, and no need for high temperature processing, or special instrument. The as-synthesized Si NPs, with high salt and temperature stabilities emitted yellow-green fluorescence (540 nm). A good linear relationship was observed from 0.06 to 40 μM and the limit of detection (based on 3 s / k ) was calculated as 20 nM, and the sensor displayed a significant selectivity toward catechol over other dihydroxybenzene isomers. Moreover, the Si NPs were applied in tap water, human serum samples and Yellow River water for catechol measurement.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
BIOMACROMOLECULES
·
2018
·
IF 5.738
Donghao Wang,Wenyi Ding,Kaiyue Zhou,Shutong Guo,Qiang Zhang,David M. Haddleton
Immobilization of enzyme could offer the biocatalyst with increased stability and important recoverability, which plays a vital role in the enzyme’s industrial applications. In this study, we present a new strategy to build an intelligent enzyme carrier by coating titania nanoparticles with thermoresponsive epoxy-functionalized polymers. Zero-valent copper-mediated living radical polymerization (Cu(0)-LRP) was utilized herein to copolymerize N-isopropylacrylamide (NIPAM) and glycidyl acrylate (GA) directly from an unprotected dopamine-functionalized initiator to obtain an epoxy-containing polymer with terminal anchor for the “grafting to” or “one-pot” modification of titania nanoparticles. A rhodamine B-labeled laccase has been subsequently used as a model enzyme for successful immobilization to yield an intelligent titania/laccase hybrid bifunctional catalyst. The immobilized laccase has shown excellent thermal stability under ambient or even relatively high temperature above the lower critical solution temperature (LCST) at which temperature the hybrid particles could be facilely recovered for reuse. The enzyme activity could be maintained during the repeated use after recovery and enzymatic degradation of bisphenol A was proven to be efficient. The photocatalytic ability of titania was also investigated by fast degradation of rhodamine B under the excitation of simulated sunlight. Therefore, this study has provided a facile strategy for the immobilization of metal oxide catalysts with enzymes, which constructs a novel bifunctional catalyst that will be promising for the “one-pot” degradation of different organic pollutants.
研究领域:
生物化学
·
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jing Li,Yining Sun,Xiaodong Yang,Zhuan Fu,Hui Sun,Bin Yu
The dopamine modification strategy has received extensive attention in water treatment due to its simple and gentle preparation process, excellent adhesion, and good secondary reactivity. Further research has found that compounds containing the catechol groups can react with the amino-containing silane coupling agents under mild conditions to form dopamine-like hydrophilic coatings on the surface of hydrophobic membranes or fibers. This paper used cheap polypropylene melt-blown nonwovens as the substrate to prepare a large-capacity dye adsorbent PP-(CK-Fe). Specifically, catechol (CA) and (3-aminopropyl) triethoxysilane (KH550) were used to form a codeposited coating on the substrate. Then, we used the secondary reactivity of the coating to grow iron-based oxides in situ. The adsorbent had good adsorption performance on anionic dyes at the initial pH of the dye solution, including Orange II (380 mg/g), methyl orange (268 mg/g), Congo red (294 mg/g), and carmine (263 mg/g). However, it had almost no adsorption effect on cationic dyes at the initial pH, including methylene blue and Rhodamine B. We chose Orange II to explore the possible adsorption mechanism. The results confirmed that the adsorbent had good adsorption performance at pH 3–11. The adsorption process tended to be monolayer chemical adsorption. The maximum adsorption capacity (Qmax) of Orange II was 515.46 mg/g under optimal conditions. This study also confirmed that the codeposition coating constructed with polyphenol and amino-containing silane coupling agents had a secondary reactivity similar to the dopamine coating.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
BIOMACROMOLECULES
·
2026
·Vol. 27
·期 8
·5753-5765
·
IF 5.9
Du Jingjing,Zhu Xixiang,Wang Zengsheng,Yu Maolin,Xu Lijian,Xu Jianxiong
Conductive
hydrogels have risen as a promising material for flexible
wearable sensors. However, achieving a hydrogel that simultaneously
possesses high mechanical properties, conductivity, self-healing ability,
and adhesion remains a challenge. Herein, we developed a dual-network
ionic conductive hydrogel (P-P(C-A)-PA) by incorporating poly(vinyl
alcohol) and a copolymer of catechol-modified ionic liquid and acrylamide.
The optimized hydrogel exhibited outstanding mechanical performance
(stress: 883 kPa, strain: 1120%), self-healing efficiency (stress
recovery of 58.6% ± 4.6% and toughness recovery of 57.7% ±
5.5%), ionic conductivity (3.91 S/m), and adhesion strength (50 kPa
on Ecoflex). The hydrogel-based flexible sensor reliably monitored
human motion with rapid and accurate signal response even after self-healing.
The hydrogel-based triboelectric nanogenerator showed excellent output
performance (180 V, 7.9 μA, and 65 nC), further identifying
grasped objects and monitoring finger rehabilitation before and after
self-healing. These results highlighted the considerable potential
of our hydrogel for applications in advanced electronics.
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产品关联
DOI
PubMed
高影响因子
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