MICROCHIMICA ACTA
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2025
·Vol. 192
·期 3
·1-14
·
IF 5.3
Zeng Xiangrong,Lei Xiaoting,Fan Zhenzong,Zhu Xiaoyu,Rao Liangmei,Tan Guixia,Gong Xia,Wen Yangping
A nanosensing platform was designed based on environmentally friendly cobalt phosphate-doped biochar (CoCPBC) derived from bamboo leaves for derivative voltammetric determination of hydroquinone (HQ) in water and soil samples. Highly ambient-stable CoCPBC is prepared by hydrothermal synthesis containing cobalt nitrate, phosphoric acid (H 3 PO 4 ), cetyltrimethylammonium ammonium bromide (CTAB), and bamboo leaves. Benefiting from the high effective area, the CoCPBC displays more active sites for HQ recognition and simultaneously improving the conductivity of biochar. The CoCPBC electrode shows excellent stability with retaining 99.34% of its initial current after 100 cyclic voltammetric scans. The CoCPBC nanosensor, enhanced by signal amplification, enables the determination of HQ in the concentration range 0.1–500 μM, with a detection limit of 0.052 μM. It exhibits high selectivity and excellent practicability, utilizing differential pulse voltammetry and first derivative voltammetry for detection. This work will provide an innovative method for the preparation of functional biochars from agroforestry wastes and their applications in the development of electrochemical nanosensing platforms. Highlights 1. A green and sustainable method to convert forestry waste into biochar using bamboo leaves as carbon source; 2. The acid activation and surfactant pore-expanding increase specific surface area and electrochemically-active sites; 3. Co-doping enhanced the conductivity and electrocatalytic activity of biochar. 4. Realization of derivative voltammetric determination of hydroquinone. Graphical
研究领域:
环境科学
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分析化学
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Dong Wang,Yuan Zhang,Xiaoting Li,Peng Lei,Shaomin Shuang,Chuan Dong
Hydroquinone (HQ) is a prevalent pollutant in aquatic environments, posing significant risks to ecosystems and human health. Practical methods for the simultaneous detection and degradation of HQ are essential. To address this requirement, a dual-mode detection and degradation strategy has been developed utilizing designed nanozymes (DM) consisting of a porous SiO 2 core and MnO 2 shell. Due to the catalytic activity of DM nanozymes, the three types of reactive oxygen species (ROS), singlet oxygen ( 1 O 2 ), superoxide anion (O 2 •- ), and hydroxyl radical (•OH), were generated to induce the color transferring of 3,3′,5,5′-tetramethylbenzidine (TMB) from colorless to blue form (oxTMB). During the reductive HQ-mediated oxTMB fading, the DM has significant selectivity towards HQ from isomers (catechol and resorcinol) due to the differing reductive reaction rates, with an excellent linear range of 0.2–45 μM with a detection limit as low as 0.11 μM. In addition, according to the color parameter changes in the sensing process, colorimeters and smartphones are utilized to achieve on-site and convenient HQ detection. Besides, the DM nanozyme can oxidatively decompose HQ without auxiliary equipment. We believe this research provides a powerful tool for detecting and removing HQ precisely.
研究领域:
环境科学
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生物化学
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纳米技术
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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
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分析化学
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高影响因子
Food Analytical Methods
·
2016
·Vol. 9
·期 11
·3044-3052
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IF 2.167
Tang Jing,Wang Wei,Zheng Shengbiao,Zhang Yan,Wei Jumeng,Wang Jianfei
The synthetic phenolic antioxidant tert-butyl hydroquinone (TBHQ) is frequently associated to adverse health effects. A polymerized film of crystal violet (CV) was prepared on the surface of a glass carbon electrode (GCE) by electropolymerization in alkaline solution, and then the modified electrode was successfully used to determine TBHQ. This electrode was characterized by scanning electron microscopy and electrochemical impedance spectra. The voltammetric behavior of TBHQ over an extended pH range using cyclic voltammetry at poly (crystal violet) modified glassy carbon electrode (PCV/GCE) was also studied. The resulting electrode exhibited excellent electrocatalytic activity towards the oxidation of TBHQ, and this was confirmed by the observed increased redox peak currents and shifted potentials. The electrochemical sensor can be applied to the quantification of TBHQ with a linear range covering 5 × 10 −7 –1 × 10 −4 mol · L −1 (with a correlation coefficient of 0.9969) and the limit detection was 3 × 10 −8 mol · L −1 (S/N = 3). The recovery was between 97.1 and 102 % in edible oil samples. The electrochemical sensor method was also compared with a HPLC method, which proves its capability in commercial market surveillance.
研究领域:
分析化学
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食品科学
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高影响因子
TRIBOLOGY INTERNATIONAL
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2024
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IF 6.1
Xianjun Hou,Weiwei Guan,Hua Jiang,Youheng Wang,Mohamed Kamal Ahmed Ali
Vegetable oils are being increasingly studied in tribology due to their environmental benefits. This study investigates the physicochemical and tribological properties of carbon black/silver (CB/Ag) hybrid nanomaterials modified by tertiary-butylhydroquinone (TBHQ) as lubricant additives. The composition of the tribolayer formed were characterized using an FE-SEM, 3D surface profilometer, and XPS analysis. The results reveal a substantial decrease in the coefficient of friction (COF) value for the hybrid nanolubricant, with an approximate 31% reduction compared to the baseline oil. Finally, the characterization of worn surfaces strongly supports the noteworthy improvement in friction performance, primarily ascribed to the synergistic effects of CB, Ag nanoparticles, and TBHQ antioxidant surfactants. This study affirms that TBHQ-modified CB/Ag hybrid nanoparticles serve as eco-friendly lubricant additives.
研究领域:
材料科学
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摩擦学
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环境科学
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 5
·347
·
IF 5.4
Li Xiaoming,Mao Qiu,He Lin,Zhang Zhengwei,Liu Dongmei,Liu Lu,Ju Pan,Ding Shijia,Li Siqiao,Luo Rong
Bimetallic Fe/Mo-doped carbon dots (Fe/Mo-CDs) have been developed as a high-performance nanozyme to construct a self-validating dual-mode (colorimetric/fluorometric) platform for hydroquinone (HQ) detection. The Fe/Mo-CDs exhibited strong peroxidase-like activity, catalyzing H 2 O 2 -mediated TMB oxidation to generate oxTMB, which simultaneously yields a colorimetric signal and quenches the fluorescence of Fe/Mo-CDs through a confirmed FRET process. The introduction of HQ competitively scavenges the essential reactive oxygen species, inhibiting oxTMB formation and triggering synchronous signal inversion in both channels. This endogenous self-validating function enables favorable analytical performance, with wide linear ranges and ultralow detection limits (0.03 µM for colorimetric; 0.016 µM for fluorometric). Successful application in commercial creams with satisfactory recoveries underscores its strong potential for accurate and reliable screening in complex samples. This work not only presents a sensitive sensor for HQ but also offers a novel design strategy for developing intelligent, self-validating biosensing systems.
Section
Graphical abstract
The alternative text for this image may have been generated using AI.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Tanzeel Riaz Ahmad,Xin Li,Ling Jiang,Jie Jin,Xiupei Yang,Fenglin Tang
Background Hydroquinone (HQ), a widely used industrial chemical, persists in the environment and poses significant health risks, including carcinogenicity, as classified by the WHO. Existing detection methods (e.g., HPLC, GC-MS) rely on sophisticated instruments and complex procedures, limiting their practicality. Colorimetric sensors based on nanozymes offer simplicity and rapidity but often suffer from poor selectivity because of interference from structural isomers (catechol and resorcinol). The development of a high-performance nanozyme with synergistic activity and selective HQ detection remains a critical challenge. Results A bimetallic nanozyme (Cu-MOF@CoNPs) was engineered via a “ship-in-a-bottle” strategy, which successfully confined cobalt nanoparticles (Co NPs) within a porous copper–organic framework (Cu-MOF) scaffold. Characterization (SEM, XRD, FTIR, and XPS) confirmed the successful integration of Co NPs into the Cu-MOF matrix, preserving structural integrity through a pillaring effect while enhancing active site exposure. The composite exhibited superior peroxidase-like activity, with Michaelis constants ( K m ) of 0.39 mM (TMB) and 0.18 mM (H 2 O 2 ), indicating higher substrate affinity than that of natural horseradish peroxidase (HRP). Catalysis was driven by synergistic Cu–Co electron transfer, generating holes (h + ) and superoxide radicals (•O 2 − ). A “signal-off” colorimetric sensor was constructed on the basis of the HQinduced reduction of oxidized TMB (oxTMB), achieving a linear range of 0.2–12 μM, a low detection limit of 65 nM, and high selectivity for HQ over structural isomers (catechol and resorcinol) due to steric confinement and favorable redox kinetics, as verified through expanded interference studies. Practical applicability was validated in tap water, lake water, soil extracts, and cosmetic samples, with recoveries of 94–110% and relative standard deviations <3.5%. Significance The Cu-MOF@CoNPs nanozyme-based sensor provides a cost-effective, portable platform for onsite HQ detection in environmental and consumer safety monitoring. Its high sensitivity, selectivity, and stability highlight the potential of hierarchical MOF-confined bimetallic nanozymes as robust tools for reliable phenolic pollutant analysis.
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ELECTROANALYSIS
·
2023
·Vol. 36
·期 4
·e202300371
·
IF 3
Wenjing Liu,Sumin Xu,Jinjin Zhang,Qi Wang,Jianying Qu
In this work, manganese-based metal-organic frameworks (MnBDC) were synthesized by solvothermal method and physically mixed with pre-prepared graphene oxide (GO) to obtain GO/MnBDC, which were calcined to give MnO@C composite coated with reduced graphene oxide (rGO) marked as rGO/MnO@C. The materials were characterized by SEM, XRD, FTIR and XPS. Based on this composite, a novel sensor was constructed on a glassy carbon substrate, which exhibited good electrocatalytic activities to the redox reactions of catechol (CC) and hydroquinone (HQ), enabling simultaneous detection of both analytes. Under optimized conditions, the electrochemical sensor demonstrated a linear range of 0.50–90.00 μM for both CC and HQ detection, with respective detection limits of 0.05 μM and 0.03 μM. Moreover, the sensor exhibited excellent sensitivity, selectivity and accuracy for detecting CC and HQ simultaneous in real samples.
研究领域:
材料科学
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分析化学
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Analytical Methods
·
2014
·Vol. 6
·期 20
·8314-8320
·
IF 1.938
Zhuo Guo,Yin Lu,Jian Li,Xian-feng Xu,Guo-qing Huang,Ze-yu Wang
A nano-complex of graphene and La(OH)3 nanowires (GR–La(OH)3) was prepared for the fabrication of a voltammetric sensor, which was used to simultaneously determine the two isomers of dihydroxybenzene, hydroquinone (HQ) and catechol (CC). The modified electrode exhibited excellent sensitivity and selectivity in the determination of HQ and CC mixed in a 0.1 M Na2HPO4–C4H2O7 buffer solution (pH 4.0). Both HQ and CC appear to be a pair of quasi-reversible redox peaks and the potential difference between oxidation peaks of HQ and CC was 112 mV. Under the optimized conditions, the oxidation peak current of both HQ and CC was linear in the range of 5 to 300 μM in the presence of 50 μM of the other one in the solution. The detection limit was found to be 0.015 μM for HQ and 0.01 μM for CC (S/N = 3). The proposed method was further successfully applied to the simultaneous determination of HQ and CC in artificial wastewater samples, and the results showed good stability and high reproducibility.
研究领域:
分析化学
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环境监测
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电化学
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纳米材料
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传感器技术
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高影响因子
MICROCHIMICA ACTA
·
2018
·Vol. 185
·期 4
·1-9
·
IF 5.705
Li Zhen,Yue Yuhua,Hao Yanjun,Feng Shun,Zhou Xianli
A nafion film containing cerium phosphate nanotubes was pasted onto a glassy carbon electrode (GCE) to obtain a sensor for hydroquinone (HQ). The morphologies and components of the coating were characterized by transmission electron microscopy, scanning electron microscopy and energy-dispersive spectroscopy. Cyclic voltammetry and differential pulse voltammetry (DPV) showed the specific surface of the electrode to be significantly increased and the electron transfer rate to be accelerated. The modified GCE was applied to the determination of hydroquinone (HQ) via DPV. The oxidation current increases linearly in the 0.23 μM to 16 mM HQ concentration range which is as wide as five orders of magnitude. The limit of detection is 0.12 μM (based on a signal-to-noise ratio of 3), and the sensitivity is 1.41 μA·μM −1 cm −2 . The method was further applied to the simultaneous determination of HQ, catechol and resorcinol. The potentials for the three species are well separated (20, 134, and 572 mV vs SCE). Average recoveries from (spiked) real water samples are between 95.2 and 107.0%, with relative standard deviations of 0.9~2.7% (for n = 3) at three spiking levels. The method was validated by independent assays using HPLC.
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研究领域:
分析化学
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环境科学
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MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 5
·1-9
·
IF 5.479
Ren Hailong,Zhang Yang,Liu Longlong,Li Yangguang,Wang Dongyang,Zhang Ruyue,Zhang Wenjing,Li Yingchun,Ye Bang-Ce
Hollow molybdenum-dopamine spheres were synthesized and thermally annealed to form hollow Mo 2 C/C spheres. The morphology, composition and electrochemical behavior of spheres were characterized. A glassy carbon electrode (GCE) was modified with the spheres and then used for simultaneous detection of hydroquinone (HQ), catechol (CC), and resorcinol (RS). Distinct oxidation peaks can be observed for HQ, CC and RS at potentials of −0.004 V, 0.10 V and 0.44 V (vs. SCE). The responses to HQ, CC and RS are linear in the concentration ranges of 0.3~1000 μM, 2~2000 μM and 3~600 μM, respectively. The corresponding detection limits are 0.12, 0.19 and 1.1 μM (at S/ N = 3). The sensor was then applied to quantify HQ, CC, and RS in tap water, river water and vegetable juice. Recoveries ranged from 93.5% to 106.5%. The modified GCE is repeatable, reproducible, stable and selective for HQ, CC and RS.
Schematic presentation of a novel electrochemical sensor based on a glassy carbon electrode modified with hollow Mo 2 C/ carbon spheres for determination of hydroquinone, catechol, and resorcinol.
研究领域:
材料科学
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分析化学
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MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 6
·1-11
·
IF 5.479
Huang Dong-Lan,Wang Jian,Cheng Fan,Ali Atif,Guo Hui-Shi,Ying Xiao,Si Li-Ping,Liu Hai-Yang
Graphene oxide (GO) was modified with the cobalt(II) and zinc(II) complexes (CoTFPP and ZnTFPP) of 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin in order to improve the electrocatalytic activity of GO towards catechol (CC) and hydroquinone (HQ). It is found that the CoTFPP-modified GO on a glassy carbon electrode (GCE) displays the highest electrocatalytic activity. The response to CC (at 0.14 V vs. SCE) is linear in the 1–220 μM concentration range. The response to HQ (at 0.04 V vs. SCE) extends from 1 μM to 200 μM. The sensitivity and detection limits are 10.40 μA∙μM −1 ∙cm −2 and 0.17 μM for CC, and 8.40 μA∙μM −1 ∙cm −2 and 0.21 μM for HQ. Experimental results indicate that the Co(II) and Zn(II) ions in the porphyrins positively affect the electron transfer rate in the hybrid materials. The GCE modified with CoTFPP/GO was successfully applied to the simultaneous determination of CC and HQ in spiked samples of tap and lake water.
Schematic presentation of a voltammetric method for simultaneous determination of catechol (CC) and hydroquinone (HQ). It is based on the use of a cobalt (II) fluoroporphyrin (CoTFPP) functionalized graphene oxide (GO) hybrid.
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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高影响因子
危险品化学品经营许可证（带存储）