MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Aijuan Xie,Linghui Cao,Tianyu Shen,Yuanxinyi Zhou,Haoye Wang,Shiping Luo
As para -aminophenol (PAP) is toxic to humans, causing skin irritation, eye damage, and central nervous system depression, and it can form as a degradation product of paracetamol (PAT) under certain conditions, the simultaneous determination of PAP and PAT is crucial. This work presents the fabrication of three-dimensional ZnCo 2 O 4 @Fe 3 O 4 /MWCNTs hybrid for the simultaneous determination of PAP and PAT using ZIF-8/67@Fe 3 O 4 as precursor and MWCNTs as conductive substrate. The ZnCo 2 O 4 @Fe 3 O 4 /MWCNTs/GCE sensor exhibits linear ranges 1.0–150.0 μM with detection limits of 0.033 μM and 0.018 μM for PAP and PAT, respectively. The developed sensor was successfully used for the determination of PAP and PAT in acetaminophen tablets and lake water with satisfactory results.
研究领域:
分析化学
·
材料科学
·
医学检测
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 50
·31663-31670
·
IF 3.108
Hong Wang,Taotao Jiang,Lei Ma,Hanbing Wang,Xiaoliang Xu,Chunshan Lu,Xiaonian Li
In this study, we found that the phenylhydroxylamine intermediate could desorb more easily from an Ir surface than from a Pt surface, which is beneficial for inhibiting the over-hydrogenation of phenylhydroxylamine to aniline. On the other hand, the Brφnsted acid functionalized ionic liquids with sulfonic acid and bisulfate anions were acidic enough to catalyze the Bamberger rearrangement to form p-aminophenol from phenylhydroxylamine. On this basis, a new catalytic system constructed by Ir/C and Brφnsted acid functionalized ionic liquid was applied, for the first time, to the one-pot hydrogenation of nitrobenzene to p-aminophenol. Our results indicate that the PAP selectivity of Ir/C and [SO3H-bmim][HSO4] Brφnsted functionalized ionic liquid was far more than that of the traditional Pt/C and sulfuric acid catalyst system. Furthermore, the dually functionalized ionic liquid ([HSO3-b-N-Bu3][HSO4]) can be used simultaneously as an acid catalyst and also as a surfactant, due to its higher lipophilicity. Therefore, our new catalytic system has unique advantages in the hydrogenation of nitrobenzene to p-aminophenol.
研究领域:
催化化学
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有机合成
·
绿色化学
✓ 已验证
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Feng Feng,Yaoyao Zhen,Yixin Chen,Jie Luo,Chong Yao,Limei Pan,Ruihao Chen,Jiwei Wu,Chunshan Lu,Xiaoliang Xu,Qingtao Wang,Qunfeng Zhang,Xiaonian Li
Liquid-phase hydrogenation reaction of nitrobenzene to p-aminophenol (PAP) is investigated using a series of Pt-based catalysts, where activated carbon served as support and ethylene glycol (EG) as the reducing agent and solvent. Different platinum sources are employed to obtain Pt/C catalysts with different Pt metal particle sizes, as determined by transmission electron microscopy. The underlying mechanism of nitrobenzene selective hydrogenation on different size of Pt clusters have been systematically investigated. Characterization and catalytic tests show that the catalytic performance of the Pt-based catalyst is deeply influenced by particle size, where the size around 2.5 nm exhibits a suitable hydrogen absorption and activation ability, leading to the best catalytic performance. Under the optimal reaction conditions, the PAP selectivity reached 76.4 % and the conversion of NB reached 100 %. Moreover, the catalyst displayed strong recyclability with the PAP selectivity remaining above 70 % after five cycles of the catalyst, which would enable promising industrial applications.
研究领域:
化学工程
·
催化科学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2016
·
IF 4.012
Zhen Dong,Tao Wang,Jie Zhao,Teng Fu,Xuefeng Guo,Luming Peng,Bin Zhao,Nianhua Xue,Weiping Ding,Zaiku Xie
The hydrogenation of nitrobenzene (NB) in acid medium is regarded as the most promising route to prepare p- aminophenol (PAP). The noble metals such as Pt have been reported as commercial catalysts but base metals are inactive due to strong acids needed in the reaction medium. Therefore, Ni-based catalyst has been attempted using solid acids, however, the results are not attractive. In this work, in order to improve the acid-resistance of Ni in sulfuric acid, we insert Si into the Ni crystal structure to form Ni-silicides. The as-prepared supported Ni-silicides nanoparticles exhibit excellent acid-resistance and perform high activity and selectivity of the entitled reaction. NiSi 2 nanoparticles supported on acid-treated active carbon are highly active and selective to convert NB to PAP in sulfuric acid. The XPS measurements show that the Ni in the Ni-silicides donates electrons to silicon, but the Ni valence is still far lower than nickel oxide, which causes its stability in acids and the activity to hydrogen activation is partially reserved. Thus, the catalysts exhibit excellent stability in alloy structure, morphology, and catalytic performance in reuses, suggesting the Ni-silicides nanoparticles as the promising substitute for precious metal for PAP manufactures.
研究领域:
催化化学
·
材料科学
·
有机合成
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Sumin Xu,Wenjing Liu,Jiajia Zhang,Jianying Qu
In this work, a MOF-on-MOF synthesis strategy was employed to successfully prepare (ZIF-8)-on-(CoCu-MOF) composites, which were further pyrolyzed at high temperature to obtain CoCu-CN nanomaterials. The morphological and structural properties of the materials were systematically investigated using SEM, FTIR, XRD and XPS. A novel sensor of CoCu-CN/GCE was constructed at a glassy carbon (GC) substrate, which exhibited excellent electrocatalytic activity to redox reactions of acetaminophen (PA) and p-aminophenol (4-AP). Under optimal conditions, the CoCu-CN/GCE sensor can be employed to detect simultaneously PA and 4-AP in the wider linear ranges of 0.05–270.00 μM and 0.05–170.00 μM, respectively with the lower detection limits of 0.020 μM and 0.019 μM respectively. Practical sample analysis for pharmaceutical and lake water gave satisfactory results. The proposed sensor displays excellent selectivity and stability with potential analytical applications
研究领域:
材料科学
·
分析化学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemistry
·
2019
·
IF 3.782
Weng Mili,Yu Xihe
In this study, La and Ce doped PbO2 electrodes were prepared and the characteristic of the electrodes were discussed with the help of structure analysis. The catalytic effects of the doped electrodes were explored through the degradation of para-aminophenol wastewater. The results showed that the para-aminophenol removal was 96.96%, 89.34%, and 77.55% after 180 min treatment with Ce-PbO2, La-PbO2, and PbO2, respectively. The para-aminophenol enhanced degradation mechanism was discussed with rare earth element doping electrodes and a kinetic model was established based on radical reactions mechanism with genetic algorithm (GA) calculation. The reaction constants of these electrodes were calculated and the results showed that the reaction constant of Ce-PbO2 electrode was the highest, which indicated that Ce-PbO2 electrode could have a better treatment effect. The EE/O was used as the index of energy consumption efficiency and the results were calculated and compared. This paper could provide basic data and technique reference of the prediction the oxidation reaction process of different electrodes for the electrochemical oxidation application in wastewater treatment.
研究领域:
环境科学
·
电化学工程
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2010
·Vol. 55
·期 23
·7102-7108
·
IF 3.325
Huanshun Yin,Qiang Ma,Yunlei Zhou,Shiyun Ai,Lusheng Zhu
The graphene–chitosan composite film modified glassy carbon electrode (GCE) was fabricated and used to determine 4-aminophenol (4-AP). In 0.1 M pH 6.3 phosphate buffer solution , the redox peak currents of 4-AP increased significantly and the peak-to-peak separation decreased greatly at graphene–chitosan composite film modified GCE compared with bare GCE and chitosan modified GCE, indicating that graphene possessed electrocatalytic activity towards 4-AP. The experimental conditions were optimized and the kinetic parameters were investigated. The oxidation mechanism was discussed. Under the optimal experimental conditions, the oxidation peak current was proportional to 4-AP concentration in the range from 0.2 to 550 μM with the correlation coefficient of 0.9930. The detection limit was 0.057 μM (S/N = 3). Using the proposed method, 4-AP was successfully determined in water samples and paracetamol tablets with standard addition method, suggesting that this method can be applied to determine 4-AP in environments and pharmaceuticals.
研究领域:
电分析化学
·
药物代谢
·
环境监测
·
生物传感器
·
分子诊断
·
转化医学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2023
·
IF 3.8
Chong Yao,Dandan Ma,Jie Luo,Yixin Chen,Min Tian,Haoxuan Xie,Chunshan Lu,Feng Feng,Xiaoliang Xu,Qingtao Wang,Qunfeng Zhang,Xiaonian Li
In order to improve the catalytic performance of the nitrobenzene hydrogenation rearrangement to prepare p -aminophenol, a bimetallic Pt-Ni/C (PNC) catalyst was synthesized. Taking advantage of the synergistic effect of Ni and Pt to enhance product selectivity and catalytic performance stability, the electrons in Ni are moved to Pt by the electron effect, which affects the catalyst's ability to activate H 2 as well as the amount of hydrogen activated. Furthermore, due to the strong Pt(5d)-Ni(3d) coupling effect, Ni can effectively maintain Pt stability in the acidic system and reduce Pt dissolution. The stability of the PNC can be found to be greatly enhanced compared to the Pt/C (PC) catalyst, and p -aminophenol selectivity is greatly enhanced, showing excellent catalytic performance.
研究领域:
催化
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2016
·
IF 1.947
Ting-Ting Zhang,Jing-Yang Jiang,Yan-Hua Wang
Various supported Pt-Pb bimetallic catalysts were prepared and applied for the catalytic conversion of nitrobenzene to p -aminophenol in the environmentally benign pressurized CO 2 /H 2 O system. Among the bimetallic catalysts prepared, Pt-Pb/SiO 2 is the best and nitrobenzene could be converted to p -aminophenol with a selectivity as high as 82% when the reaction was carried out using this catalyst at 110 °C under 5 MPa CO 2 and 0.2 MPa H 2 .
研究领域:
催化
·
化学工程
·
环境化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 29
·e55684
·
IF 2.7
Tong Yan,Hao Jiang,Wuting Pang,Tinglei He,Meng Cheng,Zhikun Wang,Chunling Li,Shuangqing Sun,Songqing Hu
Vitrimer materials have machinability and stability because of their shape remodeling and self-healing properties at high temperatures. This article reports the synthesis of epoxy resin using vanillin, p-aminophenol, and epichlorohydrin as raw materials, and polyetheramine-400 as a curing agent. To study the effect of free amine on the mechanical and self-healing properties, two materials with epoxy and amine stoichiometric ratios of 1:1 and 1:1.2 were studied, respectively. The experimental results show that when the molar ratio of epoxy to amine stoichiometric is 1:1.2 (V 1:1.2 ), the tensile strength of vitrimer materials can reach 5.4 MPa and the self-healing efficiency can reach 99.5% after 6 h of healing at 120°C. When the molar ratio is 1:1 (V 1:1 ), the obtained epoxy material has a higher tensile strength of 9.5 MPa. After 24 h of healing at 120°C, the self-healing efficiency can reach 83.4%. In addition, epoxy vitrimer materials can be remodeled at 120°C, and the self-healing and mechanical properties are not influenced after remodeling. This work proposes a novel preparation method for epoxy vitrimer materials, which is beneficial to the development of high-strength remodelable self-healing materials.
研究领域:
材料科学
·
高分子化学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 21
·12807-12817
·
IF 12.732
Hao Zhang,Chaohai Wang,Wuxiang Zhang,Ming Zhang,Junwen Qi,Jieshu Qian,Xiuyun Sun,Brian Yuliarto,Jongbeom Na,Teahoon Park,Hassanien Gomaa Abdien Gomaa,Yusuf Valentino Kaneti,Jin Woo Yi,Yusuke Yamauchi,Jiansheng Li
Carbon-based electrodes play important roles in constructing efficient capacitive deionization (CDI) devices. Therefore, the rational design of carbon materials with optimized structure, composition, and morphology is crucial for further improving the CDI performance. Herein, a novel N, P co-doped eave-like hierarchical porous carbon (NP-EHPC) for CDI is reported. To prepare the NP-EHPC, the core–shell ZIF-8@AF particles are first prepared through the kinetically-controlled growth of zeolitic imidazolate framework-8 (ZIF-8) and polymerization of p-aminophenol and formaldehyde (AF), followed by subsequent pyrolysis and post-doping with phosphorus. Owing to the unique eave-like morphology, presence of abundant mesopores, and co-doping of P and N, the NP-EHPC exhibits a high desalination capacity of 24.14 mg g−1 in 500 mg L−1 NaCl solution at 1.2 V and long cycling stability of over 150 cycles. Moreover, the density functional theory (DFT) calculation results reveal that the co-doping of N and P atoms can greatly enhance the binding energies for Na and Cl atoms and lead to superior electrosorption capacity. This work provides a new insight into the design of high-performance carbon materials for the desalination of brackish water.
研究领域:
材料科学
·
环境工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 13
·2998-3004
·
IF 6.331
Jia An,Yongqin Hu,Guoyi Liu,Meizhu Chen,Rubing Chen,Ying Lyu,Mengdi Yuan,Mengfei Luo,Yufei Liu
Considering the limited sensitivity and accuracy of single-signal assay strategies, the multi-signal assay strategy has sparked significant excitement in recent years. In this study, for the first time, we reported a one-pot method in situ synthesis of carbon-containing nanoparticles (CNPs) via p-aminophenol (AP) and diethylenetriamine (DETA). The CNP solution exhibits yellow and light blue fluorescence under UV-light. Moreover, the CNPs exhibited excellent photoluminescence stability even under extreme conditions. Inspired by the alkaline phosphatase (ALP)-triggered specific catalytic reaction, we constructed an ultrasensitive fluorescence and colorimetric two-channel strategy for monitoring the ALP activity. By optimizing the detection parameters, the detection limits for both fluorometric and colorimetric were 0.05 mU mL−1. Moreover, the strategy showed high specificity and was successfully applied to monitor the ALP activity level in human serum samples. The analytical strategy opened a new window for the detection of the ALP activity, screening of the ALP inhibitor, and disease diagnosis.
研究领域:
分析化学
·
生物传感器
·
纳米技术
·
医学诊断
✓ 已验证
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）