JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 2
·B35
·
IF 3.12
Juanjuan Gao,Weiqing Zhu,Haiou Song,Shupeng Zhang
p-Phenylenediamine (PPD) and hydroquinone (HQ) are hair dye precursors for permanent dyeing and are used globally. We report a novel and economic approach for the selective and simultaneous detection of the cathodic peaks of PPD and HQ by using a bare glassy carbon electrode, compared with modified electrodes that are obtained by tedious or expensive functionalized and that failed to achieve a peak-to-peak separation of PPD and HQ. Linear relationships between the simultaneous cathodic peak current of PPD and HQ concentrations were obtained for 0.5–400 μM and 5–4,000 μM with detection limits (S/N = 3) of 0.163 and 0.353 μM, respectively. The glassy carbon electrode sensor was applied to determine PPD and HQ in Nanjing river water with a recovery for these two analogues of 98.7–103.9% and 98.0–102.4%, respectively.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2012
·
IF 3.832
Weimeng Si,Wu Lei,Yuehua Zhang,Mingzhu Xia,Fengyun Wang,Qingli Hao
A novel poly(3,4-ethylenedioxy-thiophene) (PEDOT)/graphene oxide (GO) hybrid film was directly electrodeposited on a glassy carbon electrode. The SEM and TEM images of the as-obtained film revealed that PEDOT grew well on the surface of GO sheets with high affinity. The chemical structure of the composite was characterized by FT-IR, and the result conformed the formation of PEDOT doped by GO, leading to the enhanced electrochemical performance of the modified electrode. The composite modified electrode was utilized as an electrochemical sensor for the simultaneous detection of hydroquinone (HQ) and catechol (CT). It showed well electrocatalytic activity toward the redox of HQ and CT. Under the optimized condition, the response peak currents of the modified electrodes were linear over ranges from 2.5 to 200 μM for HQ and from 2 to 400 μM for CT. The sensor also exhibited good sensitivity with the detection limit of 1.6 μM for both HQ and CT, and good stability. This study provides a new kind of composite modified electrode for electrochemical sensors.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Hui Mao,Meihong Liu,Zhenqian Cao,Chunguang Ji,Ying Sun,Daliang Liu,Shuyao Wu,Yu Zhang,Xi-Ming Song
Novel poly(4-vinylphenylboronic acid) (P4VPBA) functionalized polypyrrole/graphene oxide (PPy/GO) nanosheets , which combined the advantages of GO, PPy and PBA groups, were successfully prepared by a simple polymerization of 4-vinylphenylboronic acid (4VPBA) on the surface of pre-treated PPy/GO containing vinyl groups. Because of the synergistic effects of GO with excellent 2D structures and large surface area, PPy with good electronic conductivity and PBA with high recognition capability, P4VPBA/PPy/GO modified glassy carbon electrode presented excellent electrochemical sensing capabilities toward catechol (CC) and hydroquinone (HQ) with good stability, high sensitivity and selectivity, especially giving a large anodic peak potential difference between CC and HQ enough to well distinguish and simultaneously determine the two dihydroxybenzene isomers in their mixture. It is found that PBA groups on the surface of P4VPBA/PPy/GO nanosheets played an essential role for the discrimination and simultaneous electrochemical determination of CC and HQ, which may be due to the selective formation of stable cyclic esters by the covalent interaction between PBA groups and related molecules with a cis -diol in an alkaline aqueous solution. Therefore, P4VPBA/PPy/GO nanosheets can act as a good electrode material for building a steady electrochemical sensor for detecting the two dihydroxybenzene isomers with high sensitivity and selectivity.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Liwen Qu,Hongying Liu,Jia Li,Yinghui Li,Xiangxiang Peng,Lihua Li,Lingao Yi
Ternary composite interface of gold nanoparticles, l -serine and molecularly imprinted polymer modified microelectrode was electrochemically fabricated. • A dual-template molecularly imprinted electrochemical sensor was constructed for the simultaneous detection of HQ and CC. • Molecular imprinting technology can achieve high selectivity for the analyte. • The platform shows potential application in pharmacology, diagnostics and electrophysiology, in-vivo and in-real. • This explore should open an access to integrate with Chinese acupuncture. Catechol (CC) and hydroquinone (HQ), typical toxic phenolic pollutants in industrial effluents, pose risks to ecosystems and human health, demanding rapid, accurate detection. Inspired by traditional Chinese acupuncture, This study developed a molecularly imprinted electrochemical sensor using acupuncture needle (ANE) as substrates. Gold nanoparticles (AuNPs) were electrodeposited on ANE for enhanced conductivity, l -Serine electropolymerized to strengthen recognition, and a melamine-based dual-template molecularly imprinted polymer (MIP) layer constructed as the sensing interface. The sensor was characterized via cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and elemental mapping techniques . It showed outstanding selectivity for HQ and CC, with a linear response of 0.1–1000 μM and detection limits of 0.021 μM (HQ) and 0.027 μM (CC), outperforming most reported sensors. In lake water analysis, it exhibited robust anti-interference, stability (RSD < 3.48%), and recoveries of 94.46%–105.6% (HQ) and 98.37%–106.08% (CC). This work integrates traditional Chinese acupuncture wisdom with modern molecular imprinting technology, providing an innovative, cost-effective strategy for on-site environmental monitoring of phenolic pollutants.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2017
·
IF 3.012
Lu Zhao,Jing Yu,Shuzhen Yue,Lixue Zhang,Zonghua Wang,Pengran Guo,Qingyun Liu
The fabrication of nickel oxide/carbon nanotube (NiO/CNT) nanocomposites by atomic layer deposition (ALD) and their electrochemical performances for sensing hydroquinone (HQ) and catechol (CC) were investigated. NiO nanopaticles with a size of ~ 4.9 nm formed by ALD were highly dispersed on the wall of pristine CNT. Then, the prepared NiO/CNT nanocomposites were used to modify glassy carbon electrode (NiO/CNT/GCE) for electrochemical detection , which presented enhanced electrochemical performances towards detecting HQ and CC. Not only were the redox peak currents of HQ and CC greatly enhanced, but also the oxidization peaks of the both phenolic isomers could be well separated. Under the optimized conditions, the current responses are linear for HQ and CC in the range of 10–500 μM and 10–400 μM, with detection limit of 2.5 μM (S/N = 3) for both compounds.
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
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Lei Xu,Yuting Wang,Erqun Song,Yang Song
Polybrominated diphenyl ethers (PBDEs) are a category of brominated flame retardants , which were widely used in industrial products since the 1970 s. Our previous studies indicated quinone-type metabolites of PBDEs (PBDE-Qs) cause neurotoxicity, however, their inherent toxicological mechanism remains unclear. Here, we first synthesized PBDE-Qs and corresponding reduced hydroquinone homologous (PBDE-HQs) with different pattern of bromine substitution. Their nucleophilic and redox properties were investigated. PBDE-Qs react with reduced glutathione (GSH) via Michael addition and bromine displacement reaction, whilst PBDE-HQs lack the ability of reacting with GSH. Of note, the displacement reaction only occurs with bromine on the quinone ring of PBDE-Qs but not phenyl ring. Next, electron paramagnetic resonance (EPR) analysis revealed the generation of SQ •− , along with their downstream hydroxyl radical (HO ) and methyl radical ( CH 3 ) through a PBDE quinone/semiquinone/hydroquinone (Q/SQ •− /HQ) futile cycle. In addition, a structure-dependent cytotoxicity pattern was found, the exposure of PBDE-Q/HQ with bromine substitution on the quinone ring resulted in higher level of apoptosis and autophagy in BV2 cells. In conclusion, this work clearly demonstrated that the nucleophilic and redox properties of PBDE-Qs/HQs are responsible for their neurotoxicity, and this finding provide better understanding of neurotoxicity of PBDEs.
研究领域:
环境科学
·
毒理学
·
神经科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2016
·Vol. 183
·期 7
·2289-2296
·
IF 4.831
Peng Juan,Feng Yun,Han Xiao-Xia,Gao Zuo-Ning
The authors describe an electrochemical sensor for simultaneous determination of bisphenol A (BPA) and hydroquinone (HQ). It is based on a carbon paste electrode doped with graphene and coated with poly(melamine) (PME/GR-CPE). The modified electrode exhibits excellent conductivity, electrooxidative activity and adsorptive capability. The differential pulse voltammetric peaks for HQ and BPA are separated by around 300 mV. Amperometric responses (at 0.5 V for HQ and 0.8 V for BPA; both vs. SCE) are linear for BPA in the 9.0 μM to 1.0 mM concentration range, and for HQ in the 7.0 μM to 1.0 mM concentration range. The respective detection limits are 10.5 nM and 74.0 nM. The sensor is reproducible, highly stable and sensitive. It was applied to the simultaneous determination of HQ and BPA in spiked tap water and waste water.
A sensor based on poly(melamine) coated on graphene-doped carbon paste electrode for simultaneous determination of bisphenol (BPA) and hydroquinone (HQ) was fabricated. The sensor possessed good reproducibility and high stability. The practical application of the sensor was demonstrated by the detection of HQ and BPA in tap water and wastewater samples.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2014
·
IF 2.871
Jie Du,Linlin Ma,Duoliang Shan,Yanru Fan,Liping Zhang,Li Wang,Xiaoquan Lu
In this study, a simple and sensitive electrochemical analytical method is developed for simultaneous detection of hydroquinone (HQ) and catechol (CC) employing the three-dimensional functionalized graphene (3DFG) modified glass carbon electrode (GCE). The 3DFG modified electrode can distinguish between HQ and CC, with higher oxidation currents in comparison with bare GCE and two-dimensional graphene (Gr) modified electrode, showing the enhanced catalytic activity. The differential pulse voltammetry (DPV) shows that the isomers can be detected sensitively and selectively at 3DFG/GCE with peak-to-peak separation about 100 mV. Under the optimized conditions, the oxidation peak current increases linearly with concentration of HQ ranged from 3.10 × 10 −7 to 1.31 × 10 −5 M and concentration of CC ranged from 2.50 × 10 −7 to 1.29 × 10 −5 M, respectively. The detection limits are 1.0 × 10 −7 M and 8.0 × 10 −8 M for HQ and CC (S/N = 3), respectively. Moreover, the proposed method has been successfully applied to the simultaneous determination of HQ and CC in real water samples with satisfactory recoveries.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Chenxi Wang,Pengcheng Zhao,Li Zhang,Yilin Wang,Qian Fu,Rongjie Li,Jiaodi Li,Chunyan Li,Yixi Xie,Junjie Fei
In this paper, a temperature-controlled “On-Off” electrochemical sensor for the detection of hydroquinone (HQ) is constructed by using a composite film of temperature-sensitive polymer poly (N-vinylcaprolactam) (PNVCL), the nanomaterial rGO@Au and the monoclinic bismuth metavanadate (m-BiVO 4 ). The sensor exhibits good temperature sensitivity and reversibility. When the temperature drops below the Lowest Critical Solution Temperature (LCST) of the PNVCL, the PNVCL will be in a “stretched” state, which hinders the electron exchange between hydroquinone and the surface of the electrode, presenting an “Off” state for the sensor. On the contrary, when the temperature exceeds the LCST, the PNVCL will be in a “contracted” state, which hydroquinone can perform an effective redox process and generate a response current, showing an “On” status. Due to the good electroconductivity and electrocatalytic ability of rGO@Au and m-BiVO 4 , the proposed sensor showed excellent detection performances. Hence, the sensor shows wide linear ranges (2.0 to 30.0 μM and 30.0 to 152.0 μM) and low limit of detection (0.6 μM). In addition, the “On-Off” electrochemical sensor may provide new ideas for the application of intelligent polymers.
研究领域:
分析化学
·
材料科学
·
环境监测
✓ 已验证
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
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2023
·
IF 6
Jie Li,Shufeng Liu,Ge Zhu,Chunshan Lu,Yuxia Ba,Guofei Chen,Xingzhong Fang
Two isomeric dianhydride monomers, 1,4-bis(3,4-dicarboxyphenoxy)-2- tert -butylbenzene dianhydride (4,4′-TBHQDA) and 1,4-bis(2,3-dicarboxyphenoxy)-2- tert -butylbenzene dianhydride (3,3′-TBHQDA), were successfully synthesized from tert -butylhydroquinone and nitrophthalonitrile. Two series of polyetherimides (PEIs) were synthesized by chemical imidization using the above dianhydrides with four common commercially available diamines. The effects of dianhydrides with isomerization and tert -butyl group on the thermal properties, optical properties, melt processability, solubility, and mechanical properties of PEIs were systematically studied. Among them, PEI-2(a-d) derived from 3,3′-TBHQDA displayed better comprehensive performance than other PEIs, which showed well T g s at 234–261 ℃, good optical properties of 82–86 % at 450 nm, extremely low melt viscosities of 30–59 Pa·s at 400 ℃, excellent solubility and good mechanical properties (tensile modulus of 2.7–3.5 GPa, tensile strengths of 90–97 MPa and elongations at break of 3.4–4.8 %).
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
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
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