MICROCHIMICA ACTA
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2024
·Vol. 191
·期 10
·1-12
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IF 5.3
Xiao Rongsheng,Dai Hongliang,Liu Xingyu,Qi Jingwen,Bao Meishuo,Wang Xingang,Li Mingde,Zhang Wuxiang,Yan Dengxin
A novel colorimetric approach specifically designed to effectively identify the presence of 3-aminophenol (3-AP) in environmental water is introduced. Briefly, a nitrogen-doped carbon-supported cobalt nanozyme (Co@CN-1) was synthesized and utilized to improve the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of peroxymonosulfate (PMS). Comparative catalytic reactions confirmed that the performance of PMS as an activator exceeds that of hydrogen peroxide catalytically by a factor of 3.5. The catalytic reaction parameters underwent optimization, further resulting in the derivation of a linear detection equation for 3-AP, expressed as inhibition rate (IR%) = 3.35[3-AP]—4.36 (0–20 μM, R 2 = 0.994) and IR% = 1.43[3-AP] + 31.87 (20–36 μM, R 2 = 0.992), with the limit of detection (LOD) of 2.84 μM. The linear relationship between 3-AP concentration and the conversion of color to grayscale value (GSV) was established by smartphones, expressed as GSV = 1.28[3-AP] + 147.10 ( R 2 = 0.972). Density functional theory calculations revealed that Co acts as the preferred active site for donating electrons in PMS activation. This work provides a rapid and accurate approach for monitoring 3-AP concentration, enabling real-time analysis and potentially contributing to environmental and ecological studies. Graphical Abstract
研究领域:
环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 7
·077512
·
IF 3.9
Jinjin Zhang,Wenjing Liu,Qi Wang,Jianying Qu
In this paper, composites of Ti3C2/ZIF-8/ZIF-67 were obtained through in situ growing ZIF-8/ZIF-67 on Ti3C2 with two-dimensional structure prepared by etching MXene using HF. Furtherly, novel materials of Ti3C2 modified with hollow polyhedrons composed of Co nanoparticles and N-doped carbon nanotube (Ti3C2/CoNP-NCNTHP) was got through derivation with high temperature calcination. The materials were combinations of two-dimensional nanosheets and three-dimensional hollow polyhedras, which were characterized by SEM, TEM, XRD, XPS and EIS. Based on this, a new electrochemical sensor of Ti3C2/CoNP-NCNTHP/GCE was constructed to detect paracetamol (PA) and 4-aminophenol (4-AP) simultaneously. Under optimal conditions, the linear ranges for detection of PA and 4-AP were 0.50–350.00 μM and 0.50–200.00 μM with the limits of detection of 0.05 μM and 0.07 μM, respectively. This proposed sensor has lower detection limits and good linear ranges, which was successfully applied for river water and acetaminophen tablets with good accuracy and has potential prospects for practical applications.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
·
IF 7.46
Ming Li,Caiping Ding,Pengde Jia,Longhua Guo,Sui Wang,Zhiyong Guo,Fengmei Su,Youju Huang
p -Aminophenol (p-AP) is one of the common environmental pollutants with teratogenic effects, nephrotoxicity and genotoxicity. In this study, a novel colorimetric method for quickly, sensitive and on-site detection of p-AP was developed based on target induced etching of AuNRs, which will generate colorful color changes. Our investigation reveals that potassium iodate (KIO 3 ) can be reduced by p-AP to generate iodine (I 2 ), and I 2 can etch CTAB stabilized AuNRs along the longitudinal direction. As an emerging fascinating colorimetric material, LSPR extinction peak of AuNRs will shift to short wave direction with a color change from the initial tea red to brown, gray, dark green, cyan, blue, indigo, purple, purplish red and final pink. Under the optimal conditions, our strategy is analytically specific and sensitive for the detection of p-AP from 0.5 μM to 20 μM by the naked eye, and a detection limit of 0.27 μM was achieved. Meanwhile, this colorimetric method is used to detect p-AP in environmental water, paracetamol tablets and human urine. Hence, this proposed strategy has the advantages of rapid semi-quantitative analysis of p-AP with naked eyes, simple operation and good application prospect.
研究领域:
环境科学
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分析化学
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生物医学工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2016
·
IF 3.15
Jin Feng,Qiang Wang,Dongliang Fan,Lirong Ma,Deli Jiang,Jimin Xie,Jianjun Zhu
In order to investigate the roles of three-dimensional network structure and calcium on Ni catalysts, the Ni, Ni-Al 2 O 3 , Ni-Ca-Al 2 O 3 xerogel catalysts were successfully synthesized via the fast sol-gel process and chemical reduction method. The crystal structure of three different catalysts was observed with X-ray powder diffraction (XRD). Transmission electron microscopy (TEM), scanning electron microscopy (SEM) and nitrogen adsorption-desorption were employed to investigate the role of network structure of xerogel catalysts and the size distribution of Ni nanoparticles. The catalyst composition was determined by inductively coupled plasma-optical emission spectrometry (ICP-OES) measurement and energy-dispersive X-ray spectroscopy (EDS). Temperature-programmed reduction (TPR) experiments were carried out to investigate the reducibility of nickel species and the interaction between nickel species and alumina. The catalytic hydrogenation of p -nitrophenol to p -aminophenol was investigated over the prepared nickel-based xerogel catalysts. The conversion of p -nitrophenol was monitored by UV spectrophotometry and high performance liquid chromatography (HPLC). The results show that the catalysts are highly selective for the conversion of p -nitrophenol to p -aminophenol and the order of catalytic activities of the catalysts is Ni < Ni-Al 2 O 3 < Ni-Ca-Al 2 O 3 . The catalysts were recycled and were used to evaluate the reutilization.
研究领域:
化学工程
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催化科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2022
·
IF 7.968
Kun Wang,Xun Zhu,Yang Yang,Dingding Ye,Rong Chen,Qiang Liao
4-Nitrophenol (4-NP) is one of the most difficult treated water pollutants in industrial wastewater . Herein, the silver nanoparticle/polydopamine (Ag-PDA/PDMS) composite is successfully prepared by in situ reducing Ag catalyst on PDA surface. The Ag-PDA/PDMS catalytic layer possesses an excellent light-to-heat conversion ability and stability under light irradiation. The degradation rate of 4-NP to 4-aminophenol (4-AP) under light irradiation is significantly higher than that of non-irradiation, resulting from both the temperature rise in the catalytic layer, and hot electrons produced by Ag nanoparticles. The temperature rise caused by the photothermal conversion of light-irradiated catalytic layer dominates the performance improvement. The degradation rate of 4-NP reaches 95 % under light irradiation, demonstrating an efficient pathway to design the robust catalyst composites with high-performance photothermal conversion efficiency.
研究领域:
环境科学
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催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2015
·
IF 4.321
Fei Wang,Jing Ren,Yunliang Cai,Long Sun,Chuanling Chen,Shuai Liang,Xingmao Jiang
High dispersed palladium nanoparticles with the size of about 3.8 nm confined within ZSM-5 zeolite catalyst (Pd/ZSM-5-IS) was successfully synthesized by in situ synthesis method based on azeotropic distillation assisted fabrication. Liquid phase selective hydrogenation of p -nitrophenol (PNP) to p -aminophenol (PAP) was chosen as model reactions to evaluate the catalytic behavior of the Pd/ZSM-5 catalysts. Thiophene and 4,6-dimethyldibenzothiophene were used as poisons to test their anti-poisoning ability. Pd/ZSM-5-IS catalyst exhibited higher catalytic activity in hydrogenation of PNP to PAP than sample prepared by impregnation method (Pd/ZSM-5-IM), which was mainly attributed to entering of Pd nanoparticles into the intracrystalline mesovoids of the ZSM-5 support for in situ method efficiently prevent active sites from loss and aggregation. In addition, Pd/ZSM-5-IS catalyst not only maintained high activity for five consecutive runs, but also showed high sulfur tolerance for the hydrogenation reactions. This simple and versatile method also can be extended to cover many kinds of other supported catalysts for broad applications in many other catalytic reactions in the future.
研究领域:
催化化学
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材料科学
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DOI
高影响因子
ChemSusChem
·
2023
·
IF 8.4
Jing Bai,Hao Li,Yuting Zhu,Yiping Zhu,Chenguang Wang,Haiyong Wang,Yuhe Liao
Graphical From the hardwood : A route was developed to transform hardwood lignin toward 2,6-dimethoxy- p -aminophenol with high yield and keeping the inherent functional groups. Lignin was first oxidized to syringaldehyde, which was converted toward 2,6-dimethoxy- p -aminophenol via oxidation, oximation, and hydrogenation. The presence of the methoxy group guaranteed the high selectivity. Although the multiple functional groups in biomass offer notable chances for producing high-value chemicals, most of the current studies focused on the (deep) defunctionalization of biomass and its derivates. Herein, we present a catalytic approach to valorize birch wood lignin with maintaining the methoxy and hydroxy groups in the final product (i. e., 2,6-dimethoxy- p -aminophenol), which has applications in different sectors such as pharmaceuticals. The proved approach involves four steps with a high yield (19.8 wt % on the basis of used lignin) to 2,6-dimethoxy- p -aminophenol. The native lignin in birch wood was first converted using alkaline aerobic oxidation in the presence of copper ions toward high-yield syringaldehyde, which was then selectively oxidized toward 2,6-dimethoxy-1,4-benzoquinone using H 2 O 2 and V 2 O 5 . Oximation of 2,6-dimethoxy-1,4-benzoquinone can selectively form 2,6-dimethoxy-1,4-benzoquinone-4-oxime, which can be quantitatively hydrogenated toward 2,6-dimethoxy- p -aminophenol. This work highlights the unique potential of biomass and its derivates for the sustainable production of high-value products with exploring the value of inherent functional groups.
研究领域:
化学工程
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生物质利用
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制药科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2019
·
IF 2.781
Zhiqiang Xu,Xianhua He,Mingwei Liang,Lijuan Sun,Di Li,Kenan Xie,Li Liao
Catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) over high-performance non-noble metal catalysts is attracting intensive attention. Herein, we report a graphene supported Cu@Ni bimetallic nanowires catalyst by a facile liquid phase reduction method with the assistance of an external magnetic field. The morphology and structure of the composite are studied by SEM, TEM and XPS. The vibrating sample magnetometer (VSM) is used to analyze its magnetic properties . Owing to the synergistic effect of graphene and bimetallic nanowires, the catalyst shows superior catalytic performance and excellent stability. The results of catalysis exhibit an extraordinary rate constant (1.16 min −1 ) and activity factor (5.81 min −1 mg −1 ) at room temperature, which are much higher than a majority of non-noble metal catalysts, even noble metal catalysts. Also, compared with noble metal catalyst, the novel catalyst possesses ferromagnetism , which facilitates the separation of catalyst and reaction system, and guarantees recyclability. Moreover, a possible synergistic catalytic mechanism based on the fact that electron transfer between copper-nickel nanowires and graphene has been proposed. It is believed that the novel catalyst has a great importance for the application of nanowires in the field of catalysis.
研究领域:
催化化学
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材料科学
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Chen Fang,Zixuan Hao,Yanlan Wang,Yingping Huang,Di Huang,Xiang Liu
Nanoreactors have been enlightened by enzymes to benefit from particular confinement for purpose of the acceleration of catalytic reactions and rendering them specific. Herein, we have first designed and synthesized the high-efficiency carbon nanotube-stabilized cobalt oxides nanoparticles (CoO x /CNT), via immobilization of CoO x nanoparticles onto carbon nanotube (CNT), for 3-aminophenol (3-AP) degradation via peroxymonosulfate (PMS) activation. Among them, carbon nanotube is used as a nanoreactor for efficient degradation of 3-AP over CoO x /CNT nanocomposite . The detailed physical characterizations illustrate that CoO x /CNT presented a nanotube-shaped structure, and some CoO x nanoparticles were encapsulated into CNT, and the molar ration of Co and O in CoO x was calculated to be 1:1.006, where CoO 1.006 might be the mixture of CoO and Co 3 O 4 . The comparison with other carriers (including MoS 2 , CeO 2 , ZnO and ZrO 2 ), CoO x /CNT provides the highest 3-AP degradation efficiency, highlighting the key role of CNT, as a nanoreactor, in CoO x /CNT for activating PMS to degrade 3-AP. The super-high catalytic activity of CoO x /CNT nanocomposite in the 3-AP degradation is owing to the specific confinement (encapsulation of some CoO x by carbon nanotubes). It seems the electron transfer from CNT to Co atom surface, enriched its surface electron cloud density, which is favorable for PMS activation. Quenching experiments and electron paramagnetic resonance (EPR) result have verified that SO 4 • - and OH• are the primary reactive oxygen species in 3-AP degradation over CoO x /CNT/PMS system. This study provides a new research orientation for the synthesis of efficient and stable carbon nanotube-encapsulated Co-based nanocatalyst for wastewater treatment .
研究领域:
环境科学
·
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·
IF 3.3
Ming Gao,Chang Bian,Hongjie Zhao,Huili Wang,Xuedong Wang
p-aminophenol nitrophenol (p-AP) is widespread in various aquatic environments with teratogenic effects, nephrotoxicity, and genotoxicity. Hence, developing a quick, sensitive, and focused approach for p-AP detection is crucial. In this study, monodisperse, evenly dispersed fluorescent sulfur quantum dots (SQDs) with a 5 - 10 nm size were produced via the "assembly-fission" technique. Tyrosinase (Tyr) catalyzes the oxidation of p-AP to 4-amino-1, 2-benzoquinone, which efficiently quenches the fluorescence of SQDs through the internal filtering effect (IFE) between the oxidative product and SQDs. The quenching mechanism of the SQDs/Tyr/p-AP system is demonstrated by analyzing fluorescence, Zeta potential, and UV-Vis absorption spectrum overlap. When the concentration of p-AP is between 0.5 and 120 μM in the presence of Tyr, the fluorescence quenching efficiency of SQDs exhibits a strong linear relationship. The limit of detection is 0.15 μM, which is comparable to most other methods, and also shows a wider linear range with less matrix interference. With outstanding recoveries of 93.2 ~ 105.8% and relative standard deviations (RSDs) of 1.8 ~ 3.7% and 3.6 ~ 6.6%, respectively, the newly proposed approach has been effectively used to detect p-AP in a variety of waters. Overall, this proposed method is having high recoveries and low detection limits for the great potential application of actual determination of p-AP in different waters.
研究领域:
环境科学
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分析化学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Jiarong Li,Shude Liu,Yuanzhao Xie,Fengluan Jiang,Xinyu Huang,Jianfeng Xia,Limin Wu,Yonghui Deng
Core–shell magnetic polymer microspheres with porous organic shells are highly desired for adsorption, separation, delivery/immobilization of guest objects in catalysis, and drug release. Herein, an amphiphilic block copolymer-directed interfacial assembly and polymerization strategy was reported to synthesize magnetic mesoporous 3-aminophenol–formaldehyde resin (MMAPF) microspheres. The uniform MMAPF microspheres exhibit well-defined core–shell structures, controllable porous shell thickness, high magnetization, and superparamagnetic properties. The abundant hydroxyl and amino groups in the porous shell offer the exceptional capability for stable immobilization of ultrafine Au nanoparticles, which can serve as a magnetically recoverable heterogeneous catalyst for catalyzing the hydrogenation of 4-nitrophenol with a fast reaction rate constant (0.59 min−1) and conversion rate (99%) at room temperature and good recycling stability.
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
LANGMUIR
·
2025
·
IF 3.9
Xin Cao,Zhiyang Zhang,Jiadong Chen,Ji Qi,Yanzhou Wu,Zhenyu Liu,Yan Chen,Xiaobo Xie,Shuang Su,Chunlei Xia,Lingxin Chen,Xiaoyan Wang
Gold nanorods (AuNRs), as versatile sensing materials, have wide analytical applications due to their unique optical properties. Cetyltrimethylammonium bromide (C16TAB), a conventional reagent in AuNR synthesis, also often acts as a stabilizer of AuNRs in applications. However, C16TAB-stabilized AuNRs undergo severe spontaneous aggregation and etching under extreme pH conditions, greatly limiting their optical sensing applications. Herein, we accidentally discovered that octadecyl trimethylammonium bromide (C18TAB), a rarely used surfactant for AuNRs, has a substantially higher stabilizing ability than C16TAB in preventing spontaneous aggregation and etching of AuNRs, which enables C18TAB-stabilized AuNRs as a superior sensing platform, demonstrating a 100-fold higher sensitivity than C16TAB-stabilized AuNRs for detection of model analytes. The excellent stability of C18TAB-stabilized AuNRs can be attributed to the higher surfactant coverage density on the gold surface, evidenced by the red-shifted longitudinal band (5 nm), which is tuned by the metal surface refraction index. The experimental results show that C18TAB-stabilized AuNRs can keep monodispersed and unchanged optical properties at very acidic and alkaline conditions with a low concentration of surfactant (0.05 mM). Moreover, the C18TAB-stabilized AuNRs can prevent spontaneous etching in the acidic sensing system and maintain their unchanged plasmon band, therefore decreasing the intensity of the noise signal. Benefiting from these findings, we established a reliable and ultrasensitive C18TAB-stabilized AuNR sensing platform and achieved the ultrasensitive detection of the model biomarker p-aminophenol (pAP), with a visual detection limit of 8 nM. This sensitivity represents at least a 100-fold improvement over the existing method using C16TAB-stabilized AuNRs. Moreover, C18TAB-stabilized AuNRs were successfully applied to detect pAP in urine samples with satisfactory recovery rates of 99.84–114.91%, further validating its reliability in practical applications. In summary, C18TAB-stabilized AuNRs provide a powerful tool for trace-level visual detection in chemo- and biosensing.
研究领域:
分析化学
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纳米生物技术
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）