JOURNAL OF HAZARDOUS MATERIALS
·
2018
·
IF 6.434
Hailong Wang,Quanqin Hu,Yuan Meng,Zier Jin,Zilin Fang,Qinrui Fu,Wenhua Gao,Liang Xu,Yibing Song,Fushen Lu
Reduced graphite oxide (rGO) was incorporated into a metal organic framework (MOF) MIL-101(Cr) for the modification of carbon paste electrode. Taking advantages of the large surface area of MOF and the electrical conductivity of rGO, the resulted electrodes exhibited high sensitivity and reliability in the simultaneous electrochemical identification and quantification of catechol (CC) and hydroquinone (HQ). Specifically, in the mixture solution of catechol and hydroquinone (constant concentration of an analyte), the linear response ranges for catechol and hydroquinone were 10–1400 μM and 4–1000 μM, and detection limits were 4 μM and 0.66 μM (S/N = 3) for individual catechol and hydroquinone, respectively. Therefore, the relatively easy fabrication of modified CPE and its fascinating reliability towards HQ and CC detection may simulate more research interest in the applications of MIL-101(Cr)-rGO composites for electrochemical sensors.
研究领域:
分析化学
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材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Yuxia Liu
In this work, a simple photoelectrochemical (PEC) sensor was developed using anatase TiO2 nanoparticles sensitized with iron(ffl) tetracarboxyl phthalocyanine (FeC4Pc@TiO 2 ) for detection of hydroquinone (HQ). The FeC 4 Pc@TiO 2 composite shows excellent photoelectrochemical activity under visible-light illumination compared with pure anatase TiO 2 nanoparticles and pure FeC4Pc. After adding HQ, the photocurrent of the FeC 4 Pc@TiO 2 -modified indium tin oxide electrode (FeC 4 Pc@TiO 2 /ITO) was significantly enhanced, which was attributed to the life improvement of the electron-hole pairs. The sensor was developed based on the enhanced photocurrent response signal. The photocurrent response signal is linear with the concentration of HQ ranging from 0.2 μM to 78 μM, with a detection limit of 0.078 μM (S/N=3) under the optimal conditions. The PEC sensor showed high sensitivity, low cost, and wide linearity range and was successfully employed in the analysis of real water samples, with recoveries between 99.7%-101.7%.
研究领域:
材料科学
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环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Yu Xin,Ning Wang,Chunli Wang,Wei Gao,Mingli Chen,Nazhen Liu,Jizhou Duan,Baorong Hou
A covalent organic framework (COF) modified carbon paste electrode (CPE) was used for the electrochemical detection of hazardous hydroquinone (HQ) and catechol (CC). Due to the advantages of TpBD-COF (large surface area, abundant functional groups and high chemical stability), rapid quantitative determination of HQ and CC was accomplished by differential pulse voltammetry (DPV). Under the optimal conditions, the resultant sensor showed an extended linear response range for HQ and CC (1–2000 μmol L −1 ), and the detection limits were 0.31 and 0.46 μmol L −1 (S/N = 3) respectively. The simultaneous determination of HQ and CC can be accomplished by data deconvolution. In binary solutions with one constant constituent concentration, a linear relationship was established between the deconvoluted peak current and concentration of the changing constituent. In addition, the electrochemical sensor showed strong anti-interference ability, good reproducibility (a relative standard deviation of 0.99% for HQ and 0.77% for CC, n = 5) and applicability in real sample detection (with spiking recoveries from 97.7% – 101.6% for HQ and 100.3% – 103.3% for CC). These results demonstrate that COF modified carbon materials are promising candidates for efficient electrochemical detection of phenolic compounds .
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
产品关联
DOI
高影响因子
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
·
2019
·Vol. 191
·期 2
·605-622
·
IF 2.14
Bai Rubing,Yu Yuanyuan,Wang Qiang,Shen Jinsong,Yuan Jiugang,Fan Xuerong
Chitosan oligosaccharide (COS), a water-soluble carbohydrate obtained from chemical or enzymatic hydrolysis of chitosan, has similar structure and properties to non-toxic, biocompatible, and biodegradable chitosan. However, COS has many advantages over chitosan due to its low molecular weight and high water solubility. In the current work, COS was incorporated in the laccase-catalyzed polymerization of hydroquinone. The laccase-catalyzed polymerization of hydroquinone with or without COS was investigated by using simple structure of glucosamine hydrochloride as an alternative to COS to understand the mechanism of COS-incorporated polymerization of hydroquinone. Although polyhydroquinone can be regarded as the polymeric colorant with dark brown color, there is no affinity or chemical bonding between polyhydroquinone and cotton fibers. Cotton fabrics were successfully in-situ dyed into brown color through the laccase-catalyzed polymerization of hydroquinone by incorporating with COS as a template. The presence of COS enhanced the dye uptake of polyhydroquinone on cotton fibers due to high affinity of COS to cotton and covalent bonding between COS and polyhydroquinone during laccase catalysis. This novel approach not only provides a simple route for the biological coloration of cotton fabrics but also presents a significant way to prepare functional textiles with antibacterial property.
研究领域:
生物化学
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纺织科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Baolong Ma,Hao Guo,Mingyue Wang,Qin Wang,Wenhu Yang,Yuhong Wang,Wu Yang
In this present study, a new porphyrin based covalent organic framework material (PN COFs) is synthesized by the imidization reaction of tetraminophenyl porphyrin (TAPP) and 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA), and then the obtained COFs were combined graphene oxide (GO) to prepare PN COFs/GO modified electrode for the simultaneous determination of hydroquinone (HQ) and acetaminophen (AC). The composite material displays a well synergistic effect of high electrocataytic activity of the COFs and good conductivity of GO. Catalytic process and electrochemical oxidation mechanism are discussed. Under the optimum conditions, the detection limits are 1.1 × 10 −8 mol L − 1 and 9.0 × 10 −9 mol L − 1 for AC and HQ, respectively. The linear ranges are 2.0 × 10 −7 mol L − 1 to 1.5 × 10 −4 mol L − 1 for AC and 1.0 × 10 −7 mol L − 1 to 1.0 × 10 −4 mol L − 1 for HQ. This work is beneficial to the electrochemical application of COFs.
研究领域:
化学
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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
MICROCHIMICA ACTA
·
2018
·Vol. 185
·期 12
·1-9
·
IF 5.705
Wang Yongping,Yue Qiaoli,Tao Lixia,Zhang Cong,Li Chen-Zhong
N/S/P-codoped carbon dots (CDs) are shown to be a viable fluorescent probe in a turn-off-on fluorometric assay for hydroquinone (HQ). The preparation of CDs was carried out using a one-step hydrothermal reaction starting with glyoxal and isocarbophos. The method is based on the formation of ground state complexes between CD and Fe(III) which leads to quenching of blue fluorescence (with excitation/emission peaks at 363/448 nm). On addition of HQ, it will be oxidized by Fe(III) upon which fluorescence recovers. This turn-off-on system can be utilized to quantify HQ. A linear relationship exists between fluorescence recovery and HQ concentration in range between 0.56 and 375 μM. The limit of detection is 0.16 μM. The assay was successfully applied to the determination of HQ in spiked water samples and developer samples.
Fluorometric determination of hydroquinone (with good selectivity over catechol and resorcinol) by using blue-emitting N/S/P-codoped carbon dots and the quenching effect of Fe(III).
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2016
·
IF 2.76
Guohui Li,Kaiyue Sun,Dawei Li,Pengfei Lv,Qingqing Wang,Fenglin Huang,Qufu Wei
Bacterial cellulose-gold nanoparticles (BC-AuNPs) hybrid nanofibers were synthesized by in-situ chemical reduction. The obtained BC-AuNPs nanofibers were characterized by a series of analytical techniques. The results revealed that gold nanoparticles (AuNPs) were successfully deposited on the surfaces of bacterial cellulose nanofibers. Then, the as-prepared BC-AuNPs hybrid nanofibers were attached onto the electrode surface followed by adding a certain amount of laccase (Lac) and Nafion to construct novel a biosensing platform. The prepared electrochemical biosensor was employed to detect hydroquinone. The sensor showed excellent electrocatalysis towards dopamine with low detection limit (5.71 nM), and wide linear range (30–100 nM). Moreover, the biosensor also showed good repeatability, reproducibility, selectivity and stability and was successfully used in the detection of hydroquinone in lake water samples, thus providing a promising method for hydroquinone detection in water environments.
研究领域:
生物技术
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2012
·
IF 3.898
Guiyun Xu,Beibei Li,Xiliang Luo
A sensitive amperometric sensor for the selective detection of hydroquinone in cosmetics was developed based on the excellent electrocatalytic property of carbon nanotube (CNT) doped poly(3,4-ethylenedioxythiophene) (PEDOT) conducting polymer toward the oxidation of hydroquinone. The oxidation potential of hydroquinone on the PEDOT/CNT modified carbon paste electrode was much lower than that on the bare electrode, and the charge transfer rate constant for the oxidation of hydroquinone was significantly increased from 0.45 to 1.84 s −1 after the modification with PEDOT/CNT. Under optimal conditions, the differential pulse voltammetry current of the sensor was linear with hydroquinone concentration across a 1.1–125 μM range and associated with a detection limit of 0.3 μM. Significantly, the detection limit is comparable or better than many current electrochemical hydroquinone assays, and the sensor is potentially much cheaper and easier for fabrication. The sensor was capable not only of comfortably quantifying hydroquinone in the presence of common interferences but also doing this in real cosmetics samples with satisfying accuracy.
研究领域:
分析化学
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材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2014
·Vol. 182
·期 5
·943-948
·
IF 3.719
Chao Yingjun,Zhang Xiao,Liu Lei,Tian Lihui,Pei Meishan,Cao Wei
We report on a flow injection chemiluminescence assay for hydroquinone (HQ) using Fe 3 O 4 magnetic nanoparticles capped with oleic acid and coated with a polymer whose surface was molecularly imprinted for HQ to act as the recognition element. Dispersed in an oil phase, the surface imprinted particles display excellent adsorption capacity (63 mg∙g‾ 1 ) and a rapid adsorption rate. Packed into a flow cell, the addition of the reagents hexacyanoferrate(III), luminol and chlorhematin generates chemiluminescence whose intensity is linearly related to the concentration of HQ in the range from 2 × 10 −7 to 1.0 × 10 −5 mg∙mL‾ 1 , with a detection limit of 7.9 × 10 −8 mg∙mL‾ 1 and a relative standard deviation of 2.3 % at 1.0 × 10 −7 mg∙mL‾ 1 HQ ( n = 6). The method was successfully applied to the determination of HQ in spiked water samples.
The flow-injection chemiluminescence assay for hydroquinone uses Fe 3 O 4 magnetic nanoparticles capped with oleic acid and coated with a polymer whose surface was molecularly imprinted for hydroquinone.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2017
·
IF 3.012
Qi Chen,Xi Li,Xinmin Min,Dan Cheng,Jian Zhou,Yugang Li,Zhizhong Xie,Peng Liu,Weiquan Cai,Chaocan Zhang
A composite (MOF-GO) of Cu-based MOF-199 (MOF) and graphene oxide (GO) was prepared by the solvothermal method and used as the modified material to fabricate an electrochemical sensor for the determination of catechol (CT) and hydroquinone (HQ). The modification was carried out through the electrodeposition of MOF-GO composites on the glassy carbon electrode and the transformation of MOF-GO to MOF-ERGO by an electrochemical reduction . Differential pulse voltammetry (DPV) was employed for exploring the electrochemical properties of the as-prepared electrode and the oxidation of CT and HQ at the modified electrode . Under the optimized experimental condition, the linear calibration curve was obtained in the range from 0.1 μM to 566 μM for CT ( R 2 = 0.997) and 0.1 μM to 476 μM for HQ ( R 2 = 0.999) with the same low detection limit of 0.1 μM ( S / N = 3). The experimental results showed that the modified electrode was easily fabricated in control and exhibited the outstanding stability. The validity for practical samples detection of CT and HQ was also demonstrated with satisfactory results.
研究领域:
分析化学
·
电化学传感器
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2022
·Vol. 29
·期 2
·1-9
·
IF 3.061
Song Tao,Wang Qingyin,Li Jianguo,Chen Xuejun,Liu Shaoying,Wang Gongying
A new copolyesters of poly(2-[4-(2-hydroxyethoxy)phenoxy]ethyl-co-1,4-cyclohexylenedimethylene terephthalate) (PHCT) with different compositions were synthesized from terephthalic acid, 1,4-cyclohexanedimethanol and hydroquinone bis(2-hydroxyethyl) ether (HQEE) via esterification-polycondensation reaction. The synthesized copolyesters were analyzed by 1 H-NMR, FT-IR, GPC, intrinsic viscosity, DSC, TGA and tensile testing, respectively. The 1 H-NMR and FT-IR analysis confirm the successful introduction of HQEE into poly(1,4-cyclohexylenedimethylene terephthalate (PCT) chains. The introduction of HQEE into PCT chains can effectively lower the melting point of PCT, making it easier to process. The glass transition temperature of PHCT is higher than 70 ℃ and it has the comparable thermal stabilities to PCT. In addition, introducing HQEE into PCT chains can effectively improve the molecular weights of PCT, thus imparting PHCT with better mechanical performance relative to PCT. The PHCT is a tough polymer, which owns the higher Young’s modulus (above 300 MPa), the higher tensile strength (above 39 MPa) and the higher elongation at break (above 226%).
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
ChemistrySelect
·
2023
·Vol. 8
·期 15
·e202300287
·
IF 2.1
Mengyu Liu,Xiang Yu,Lanting Yang,Guangzai Nong
Graphical In this study, copper-ammonia complexes were utilized as catalysts for the polymerization of hydroquinone. These complexes not only acted as catalysts, but also bound to the poly(hydroquinone) during the polymerization process. With acid hydrolysis to remove the complexes, a thermally stable poly(hydroquinone was obtained with a degree of polymerization of 2–9 and yield of 63.2 %. The copper-ammonia complexes also accelerated the polymerization rate by three times compared to using only ammonia solution, offering potential for improving hydroquinone polymerization efficiency. Poly(hydroquinone) (PHQ) is a class of polymers with a leading chain composed entirely of quinone-phenol structures, which possess both the heat resistance of polymers and the redox activity of the monomer quinone-phenol and have promising applications in sensors, anti-corrosion and antioxidants. However, the current synthesis efficiency is low, and the product solubility is poor, which hinders its wide application. In this paper, the copper-ammonia complex was used to catalyze the polymerization of hydroquinone. The product‘s structure was verified by FTIR, UV-Vis, XPS, SSNMR and EDS. The degree of PHQ obtained by GPC was 2–9, and the reaction mechanism of the polymerization process was demonstrated in detail. The experiments showed that the copper-ammonia complex not only acted as a catalyst but also participated in the reaction, firstly generating the PHQ copper-ammonia complex, which is almost insoluble in water and common organic solvents. Then by further acid washing to dislodge the copper-amino groups, the resulting PHQ was able to dissolve in solvents such as DMSO and methanol. In addition, the method is three times faster than the catalytic rate using an equivalent amount of ammonia.
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
危险品化学品经营许可证（带存储）