MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 10
·1-12
·
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
·
分析化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2021
·
IF 5.875
Hongji Liu,Jinju Nie,H.C. Stephen Chan,Hailu Zhang,Liang Li,Hongqing Lin,Henry H.Y. Tong,Ande Ma,Zhengzheng Zhou
Herein, we reported a new bergenin : 4-aminobenzamide ( BGN-4AM ) cocrystal with significantly enhanced solubility and low hygroscopicity probed from two aspects such as phase solubility diagrams and theoretical calculations. Compared with anhydrous BGN , BGN-4AM solubilities in water and different buffer solutions (pH = 1.2, 4.5, 6.8) increase significantly. It is noted that BGN-4AM solubility in pH = 6.8 buffer solution presents 32.7 times higher than anhydrous BGN . Interestingly, BGN-4AM (0.31 ± 0.07%) showcases lower hygroscopicity than anhydrous BGN (9.31 ± 0.16%). The predicted and experimental solubilities agree with each other when considering solubility product ( K sp ) and solution binding constant ( K 11 ) in phase solubility diagrams, indicating the solution complexes formation occurs. Further crystal surface-water interactions and Bravais, Friedel, Donnay-Harker (BFDH) analyses based on Density Functional Theory with dispersion correction (DFT- d ) methods support the enhanced solubility. The water probe demonstrates an average interaction energy of −6.48 kcal/mol on the 002 plane of BGN-4AM , and only −5.47 kcal/mol on the 011 plane of BGN monohydrate. The lower lattice energy of BGN-4AM guarantees its lower hygroscopicity than BGN monohydrate. BGN-4AM with enhanced solubility and low hygroscopicity can be a potential candidate for further formulation development.
研究领域:
药剂学
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理论化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Hanhan Zhao,Wenjun Jiang,Yinhua Ma,Liubin Pei,Jiayu An,Su Zhan,Feng Zhou
The inherent electron-hole recombination, low light-absorption capacity and poor selectivity of photocatalysts hinder the production efficiency of hydrogen peroxide (H 2 O 2 ), necessitating the development of a catalyst with high catalytic activity. In this study, a supramolecular self-assembly method was employed to prepare 4-aminobenzonitrile-modified carbon nitride (Abz-CN). The incorporation of the cyano group rendered the charge distribution of Abz-CN inhomogeneous, leading to an increased dipole moment. This enhancement facilitated the separation and migration of photoinduced carriers. Additionally, density functional theory (DFT) calculations revealed that Abz-CN had a higher propensity for oxygen adsorption and the formation of *OOH intermediates compared to carbon nitride (BCN). The H 2 O 2 generation rate of Abz-CN reached 3866 μmol·g −1 ·h −1 (under a 180 W xenon lamp, λ > 400 nm), which was 5.2 times that of BCN. Furthermore, the mechanism of Abz-CN followed a sequential two-step single-electron oxygen reduction process. This study showcases an innovative approach for bolstering the efficiency of photocatalytic H 2 O 2 generation.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
POLYHEDRON
·
2022
·
IF 2.975
Xian-Hao Feng,Zhi-Chao Yu,Wei Zhang,Carl Redshaw,Timothy J. Prior,Tie-Hong Meng,Chun-Rong Li,Zhu Tao,Xin Xiao
In the work, we have studied the interaction of cucurbit[7]uril (Q[7]) with 1-[4-(dimethylamino)phenyl]-ethanone (DAPE) using a variety of techiniques including 1 H NMR spectroscopy, UV–vis adsorption and fluorescence spectroscopies, Isothermal titration calorimetry and single crystal X-ray diffraction. Results revealed the formation of a 1:1 complex, whilst the molecular structure of the species [(Q[7]@DAPE)Ca(H 2 O) 3 ] 2 (CdCl 4 ) 2 ·31(H 2 O) is reported.
研究领域:
化学
·
分子生物学
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DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Tingting Yan,Han Li,Dongyang Xi,Lei Sun,Linan Liu,Dinghan Jin
This study investigated the behavior of energetic material 4-aminobenzamide (4-AMBZA; C 7 H 8 N 2 O) under high pressure utilizing Raman spectroscopy. Notable alterations were detected in the Raman spectra within 2.6–7.8 GPa, suggesting 4-AMBZA experiences a phase transition. Continued pressure caused the crystal to show a tendency towards amorphization. When the pressure is released, the amorphization phenomenon persists. Variations of N H bending vibration (amide II), C N stretching vibration (amide III), and C O stretching vibration (amide I) indicate that phase transition arises from the twisting and rearrangement of hydrogen-bonded networks. Hirshfeld surface energy were conducted to analyze intermolecular interactions within 4-AMBZA.
研究领域:
材料科学
·
化学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2016
·
IF 1.835
Hongjie Xu,Zuoxiang Zeng,Weilan Xue,Kun Li
The solubility of ethyl p-aminobenzoate (EPAB) was measured in six different alcohols (methanol, ethanol, n-propanol, n-butanol, isobutyl alcohol, isoamyl alcohol) within (283.15 to 327.15) K by the last solid disappearance method. The solubility increases with increasing temperature. The decreasing order satisfies the following sequence: methanol > ethanol > n-propanol > n-butanol > isoamyl alcohol > isobutyl alcohol. Four models, including modified Apelblat equation, λh model, NRTL model, and Wilson model, were used to correlate the experimental data of EPAB. It is found that the modified Apelblat equation, NRTL model, and Wilson model were suitable to correlate the solubility of EPAB in the selected solvents with an overall RAD less than 2%. In addition, the changes of thermodynamic properties of solution [standard molar enthalpy (ΔdisHo), standard molar entropy (ΔdisSo), and standard molar Gibbs energy (ΔdisGo)] were obtained. The results indicate that the dissolution process of EPAB in these alcohols is endothermic and an entropy-driven process.
研究领域:
物理化学
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药学
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DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 6
·1-7
·
IF 5.479
Xiong Huayu,Wang Bei,Wen Wei,Zhang Xiuhua,Wang Shengfu
Water-soluble cadmium telluride quantum dots capped with 3-mercaptopropionic acid were synthesized and further modified with 3-aminophenylboronic acid to form boronic acid-functionalized quantum dots (QDs). Under excitation at 350 nm, the modified QDs display yellow fluorescence with a peak at 566 nm. On exposure to copper(II), the fluorescence of the QDs is quenched. Under optimal conditions, fluorescence drops linearly in the 0.01 to 20 μM Cu(II) concentration range, and the detection limit is 7.6 nM. This fluorescent probe was applied to the determination of Cu(II) in spiked human serum and water samples and gave satisfactory results.
Schematic presentation of the principle for fluorometrice detection of copper(II) based on the use of boronic acid-functionalized cadmium telluride quantum dots (CdTe QDs).
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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DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Haichao Zhao,Tong Liu,Chengcheng Jiao,Feng Yang
In this work, epoxy coatings containing phytic acid-doped tetraaniline (PATA) nanoparticles for Q235 steel were prepared and their anticorrosive properties were investigated. Synthesized PATA nanoparticles were characterized by scanning electron microscope (SEM), scanning probe microscope (SPM), photoelectronic spectroscopy (XPS), and Raman test. The anti-corrosion properties of coating were studied by the open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and scanning vibrating electrode technique (SVET). The experimental results showed that the content of the PATA nanoparticle has a positive effect on the barrier ability of the epoxy matrix. The epoxy coating containing 0.25 wt% of PATA nanoparticles has superior corrosion protection property and a satisfactory self-healing effect. The self-healing effect of PATA/EP coating ascribes to the synergistic effect of the passivation of phytic acid ions and tetraaniline. As an effective anticorrosion filler, the PATA nanoparticle has the potential to apply to the field of corrosion protective coating.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Huijuan Zhu,Yibing Xie
The bridge molecule-reinforced activated carbon fiber-m-aminobenzenesulfonic acid-polyaniline (ACF-mABSA-PANI) is designed and fabricated as braidable-supercapacitor electrode to achieve long cycle life and high capacitive performance. The mABSA acts as bridge molecule to form amide bond between mABSA and ACF, as well as sulfonamide bond between mABSA and PANI, which is confirmed by infrared spectrometer and X-ray photoelectron spectroscopy. The interfacial interaction between ACF and PANI is enhanced by chemical bonding, thus alleviating the shedding of polyaniline and improving the cycle life of ACF-mABSA-PANI. The electrostatic potential and Mulliken charge analysis calculations indicate that ACF-mABSA-PANI has an extended delocalized π-π conjugation system. The bridge molecule of mABSA improves the free electron migration efficiency between PANI and ACF, leading to an increase in the specific capacitance of ACF-mABSA-PANI. As a result, ACF-mABSA-PANI presents much higher specific capacitance of 599.3F/g at 0.5 A/g and much higher capacitance retention ratio of 93.8 % after 2000 charge/discharge cycles at 2 A/g while ACF-PANI only keeps 335.0F/g and 54.4 %. Braidable-supercapacitor based on ACF-mABSA-PANI electrode provides an energy density of 39.83 Wh kg −1 at a power density of 900 W kg −1 and maintains a high capacitance retention of 78.1 % after 2000 charge/discharge cycles at 2 A/g. Well-designed ACF-mABSA-PANI presents the potential and promising application for wearable electrochemical energy storage devices.
研究领域:
材料科学
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电化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
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
·
催化科学
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DOI
高影响因子
ChemElectroChem
·
2021
·Vol. 9
·期 2
·e202101483
·
IF 4.59
Linlin Qiu,Liang Chen,Wei-Hsiang Chen,Yongfeng Yuan,Lixin Song,Deqiang Mei,Bing Bai,Fuqiang Xie,Pingfan Du,Jie Xiong
Graphical The potassium p– aminobenzoate (KPAB) was used to optimize the SnO 2 ETL. −NH 2 in KPAB can coordinate with Pb of perovskite to reduce defect density. −COO − in KPAB can adsorb on the surface of SnO 2 . Therefore, KPAB help form a chemical bridge between the SnO 2 and perovskite layers. In addition, the potassium ions are able to interact with halogen ions of perovskite, thereby effectively reducing defect states, suppressing hysteresis and enhancing PSCs performance and stability. Perovskite solar cells (PSCs) fabricated with a low-temperature (≤150 °C) SnO 2 -based electron transport layer (ETL) have been rapidly developing and demonstrate high power conversion efficiency (PCE). To further enhance the efficiency and stability of PSCs, high-quality perovskite and SnO 2 films are needed, and the interfacial performance between the SnO 2 ETL and the perovskite layer needs to be improved. In this work, potassium p -aminobenzoate (KPAB) was introduced to regulate the SnO 2 ETL to obtain reduced defects and an excellent wetting property, inducing vertically aligned crystal growth of the perovskites on the interface side of the SnO 2 ETL. In addition, the potassium ions were able to interact with the halogen ions of the perovskite, which further enhanced the quality of the perovskite film. Due to the abovementioned strengths of KPAB, we demonstrated that devices based on KPAB-SnO 2 have a higher power conversion efficiency (19.03 %), better reproducibility, and superior operational stability compared to devices with pristine SnO 2 .
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2015
·Vol. 182
·期 7
·1247-1254
·
IF 3.741
Dai Hong,Gong Lingshan,Lu Shuangyan,Zhang Qingrong,Li Yilin,Zhang Shupei,Xu Guifang,Li Xiuhua,Lin Yanyu,Chen Guonan
We have developed a sensor for 4-aminophenylarsonic acid (4-APhAA) by coating a glassy carbon electrode (GCE) with a composite prepared from an ionic liquid and dahlia-like carbon nanohorns (CNHs). The good electric conductivity, large surface area and high pore volume of the CNHs, and the synergistic action of the ionic liquid (which is a good dispersant with excellent ion conductivity) result in efficient electrocatalysis towards oxidation of 4-APhAA. The effect was investigated by various electrochemical methods, and the electron transfer coefficient, diffusion coefficient, standard heterogeneous rate constant and thermodynamic activation energy were determined. The response range of 4-APhAA was evaluated using an i-t plot. If operated at a working voltage of 900 mV (vs Ag/AgCl), the sensor responds to 4-APhAA over the 0.5 μM to 3.5 M concentration range.
An electrochemical sensor for 4-aminophenylarsonic acid is presented that consists of a glassy carbon electrode modified with carbon nanohorns and ionic liquids.
研究领域:
分析化学
·
电化学
·
生物医学工程
·
纳米材料
·
环境监测
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）