JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2025
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IF 2.6
Han Qing,Li Zhibo,He Mengyuan,Wei Zhengwen,Song Shuhao,Wang Jiacheng,Wang Wei
This study proposes a simple method for preparation Schiff base polymers (DATP) and its metal complexes (M-DATPs, M = Cu 2+ , Fe 2+ ) as electrode materials for supercapacitors. The condensation reaction involves mixing 1,4-diaminoanthraquinone, terephthalaldehyde, and metal chlorides in trifluoroacetic acid at room temperature. M-DATPs possess larger surface area, unique morphology, and suitable conductivity in comparison with DATP. The electrochemical performance of the materials was evaluated in a 6 mol L −1 KOH electrolyte using cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). And Cu-DATPs were used as the positive electrode and activated carbon (AC) as the negative electrode to assemble the supercapacitor Cu-DATPs//AC, which was investigated through the dual-electrode testing. The results indicate that M-DATPs possess excellence electrochemical performance, the specific capacitance of sample Cu-DATPs get 853.87 F g −1 at a current density of 0.5 A g −1 . And the galvanostatic charge–discharge (GCD) research illustrate that sample Cu-DATPs have good cycling stability. In addition, the energy density of Cu-DATPs//AC is 64.055 Wh kg −1 , and the power density is 288.46 W kg −1 . This study provides a novel strategy for the synthesis of conjugated Schiff base polymers and metal ion coordination to prepare electrode materials with excellent electrochemical performance.
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
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2020
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IF 3.232
Chunqing Li,Li Xiao,Qinyu Zhang,Xinjian Cheng
It is urgent and important to detect heavy metals in environments. In this work, novel reaction-based fluorescent probes were obtained by Schiff base reaction. The probes with Schiff base moiety (-C=N-) undergo irreversible hydrolysis in the presence of Hg 2+ and Fe 3+ . They exhibit perfect high selectivity and sensitivity to Hg 2+ and Fe 3+ ions. Upon the addition of Hg 2+ and Fe 3+ , fluorescence intensity of the probes increased notably. And the color of the probe changes from brown to bright green under UV light, which can realize “naked eye” detection. In addition, Schiff base group was introduced into polyurethane chain through condensation polymerization reaction . As expected, the fluorescent polyurethane probe (P2) maintained the detection performance of its original small molecules (BSD). Even more P2 showed a more sensitive detection effect than BSD, and the detection limits of P2 for Hg 2+ and Fe 3+ reach 0.19 μM and 0.21 μM, respectively. It indicates that Reaction-based probes could be a useful tool for the detection of Hg 2+ and Fe 3+ .
研究领域:
环境科学
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分析化学
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DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2024
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IF 1.5
Gado Mohamed A.
(Pyridine-2,5-diylbis(azaneylylidene)) bis-(methaneylylidene)) bis(benzene-5,1,3-triyl) tetrakis (hydrogen phosphonate) (PZMB) was successfully synthesized for Th(IV) and Ce(IV) adsorption, the adsorption parameters evaluated and found to be pH 3.5, time 60 min, dose 0.15 g. Adsorption kinetics, isotherm, and thermodynamics studies. Adsorption kinetics studies show that adsorbent follow pseudo-second-order model while isotherm studies conclude that adsorption processes fitted Langmuir and D-R isotherm model. The maximum adsorption capacity of BZMB of Th(IV) and Ce(IV) are 366.4 and 244.53 mg/g respectively, Thermodynamic studies indicate both adsorption processes exhibited by the PZMB were endothermic, spontaneous and sorption occurs in a random manner.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
Marine Drugs
·
2022
·Vol. 20
·期 11
·688
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IF 6.085
Jingmin Cui,Yan Sun,Linqing Wang,Qin Miao,Wenqiang Tan,Zhanyong Guo
We successfully prepared a series ofl-arginine Schiff bases acylated chitosan derivatives, aiming to improve the antioxidant activity and antimicrobial activity of chitosan by introducing a furan ring, pyridine ring, andl-arginine structure. The accuracy of the structures of ten compounds was characterized by FT-IR and1H NMR. In terms of DPPH radical scavenging activity, except for compound CR3PCA, the scavenging rate of other compounds was higher than chitosan, especially CRCF and CRBF had strong scavenging abilities. At the same time, in the superoxide-radical scavenging activity assay, CRCF, CRBF, CR3PCA, CR2C3PCA, and CR2B3PCA were comparable to positive control at 1.60 mg/mL. Simultaneously, CRFF, CRCF, and CRBF had a certain inhibitory effect onBotrytis cinerea. Furthermore, the inhibitory effect of CRFF, CRCF, and CR3PCA onStaphylococcus aureuswas very well, close to the positive control at 1.00 mg/mL. CRCF and CR2B3PCA showed better inhibitory effects onEscherichia colithan other compounds. The MTT assay was used to determine the cytotoxicity of the chitosan derivatives, which proved their safety to fibroblast cells. In summary, the study indicated that some of these compounds have the potential for further development and utilization in the preparation of antioxidants and antimicrobial agents.Keywords:chitosan;l-arginine Schiff bases;heterocyclic compounds
研究领域:
生物化学
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食品科学
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药学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
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IF 4.233
Ning Pan,Long Li,Jie Ding,Ruibing Wang,Yongdong Jin,Chuanqin Xia
A novel approach for facile covalent functionalization of graphene oxide (GO) was proposed in the present study in order to effectively avoid necessary anhydrous conditions and the usage of harsh reagents during the chemical functionalization of GO. Herein, a GO derivative that was functionalized with a primary amine derivative bearing a positively charged quaternary ammonium group, GO-S, was synthesized through a Schiff base condensation reaction between the amine groups of the primary amine derivative and the aldehyde groups of GO. The introduction of the quaternary ammonium groups can prevent GO from stacking and improve the dispersibility of GO after modification. The formation of imine bonds ( N CH ) between the primary amine and GO has been confirmed by Fourier transform infrared and X-ray photoelectron spectroscopy. The GO-S demonstrated good dispersion stability in aqueous medium and also exhibited better adsorption performance than GO for Th(IV) and U(VI), with a maximum thorium adsorption capacity of 2.22 mmol/g and a maximum uranium adsorption capacity of 0.83 mmol/g, suggesting a great potential for the application of graphene oxide-based materials for facilitating the removal of Th(IV) and U(VI) from nuclear waste solutions.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Materials
·
2023
·Vol. 16
·期 8
·3214
·
IF 3.4
Yafei Liu,Huixia Feng,Luyao Wang,Tiantian Yang,Jianhui Qiu
Due to the obvious numerous economic and technical consequences of the corrosion process, its inhibition is one of the most critical aspects of current research. A corrosion inhibitor for the bis-thiophene Schiff base copper–metal complex Cu(II)@Thy-2 was investigated here, which was synthesized via a coordination reaction with a bis-thiophene Schiff base (Thy-2) as a ligand and copper chloride (CuCl2-2H2O) as a ligand metal salt. When the corrosion inhibitor concentration was increased to 100 ppm, the self-corrosion current densityIcoorreached a minimum of 2.207 × 10−5A/cm2, the charge transfer resistance reached a maximum of 932.5 Ω·cm2, and the corrosion inhibition efficiency reached a maximum of 95.2%, with the corrosion inhibition efficiency showing a trend of increasing first and then decreasing with concentration increase. After adding Cu(II)@Thy-2 corrosion inhibitor, a uniformly distributed dense corrosion inhibitor adsorption film formed on the surface of the Q235 metal substrate, significantly improving the corrosion profile compared to both before and after the addition of the corrosion inhibitor. Before and after the addition of corrosion inhibitor, the metal surface’s contact angle CA increased from 54.54° to 68.37°, showing that the adsorbed corrosion inhibitor film decreased the metal surface’s hydrophilicity and increased its hydrophobicity.Keywords:anticorrosion;corrosion inhibitor;thiophene Schiff base;electrochemistry
研究领域:
材料科学
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化工
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电化学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2018
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IF 3.909
Yikang Yan,Gutha Yuvaraja,Chunjiang Liu,Lingjun Kong,Kai Guo,Guda Mallikarjuna Reddy,Grigory V. Zyryanov
Lead is one of the highly toxic metals reaching the water bodies from industries and discarded domestic wastes. Chitosan and its derivatives can be used to modify magnetic materials to promote the adsorption properties of the magnetic materials for the removal of metal ions. The obtained ECCSB@Fe 3 O 4 was characterized by XRD, FTIR, SEM, TEM and VSM analysis. The effect of solution pH, adsorbent dosage, contact time , initial metal ion concentration and temperature effect was studied. The results of the batch sorption kinetic experiments were substituted into the pseudo-first order, pseudo-second order and intraparticle diffusion models. The R 2 and SSE results show that pseudo-second order equation describes the sorption process very well. Adsorption process revealed that the initial uptake of Pb(II) was rapid and equilibrium was achieved within 105 min. Langmuir and Freundlich adsorption isotherm models were applied to represent adsorption isotherm data. The equilibrium data were well fitted by the Langmuir isotherm model by revealing the maximum sorption capacity value 86.20 mg/g of ECCSB@Fe 3 O 4 . Different thermodynamic parameters, namely, changes in standard Gibbs energy, enthalpy, and entropy, were also evaluated from the temperature dependence, and the results suggest that the adsorption reaction is spontaneous and endothermic in nature.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Xueying Sun,Lina Xie,Wenlong Huo,Kaifeng Lin,Yulin Yang,Xuhui Chi,Chengyuan Zhao,Fengtao Zhang,Junzhuo Li,Debin Xia,Jian Zhang
In this study, an organic molecular probe containing an imine (C=N) linkage was synthesized and embedded in a polymethylmethacrylate (PMMA)/polyethylene glycol (PEG) matrix to fabricate a porous optical film for NO 2 gas detection via solid-state UV spectroscopy. Upon exposure to NO 2 , the film exhibited significant spectral changes, with a detection limit as low as 26.45 ppm. Mechanistic investigations revealed that NO 2 induced non-covalent interactions with the probe, triggering structural reorganization and enhanced π-conjugation. Density Functional Theory (DFT) calculations further supported these findings by confirming changes in electronic structure and energy levels. Additionally, preliminary tests demonstrated the feasibility of applying this probe film for aging detection of NEPE propellants, offering a promising non-destructive approach for monitoring propellant health.
研究领域:
材料科学
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化学
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环境监测
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DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2021
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IF 3.975
Hafezeh Nabipour,Haoxin Niu,Xin Wang,Sadia Batool,Yuan Hu
There are many applications for epoxy resin as a coating material in the automotive, electronics, and aerospace industries. However, when derived from petrochemical industries, adversely affect the environment, as they are rigid and resistant to recycling due to inherent cross-linked structure. In the present study, we prepared green epoxy resin from renewable resources, able to replace the conventionally produced DGEBA thermoset . Initially, we synthesized an epoxy thermoset from vanillin-derived Schiff base epoxy monomer (VTA-EP) that was thermally cured with bio-based 5, 5′-methylenedifurfurylamine (DFA). Due to the unsaturated double bond in cured VTA-EP/DFA thermoset displayed a relatively high glass transition temperature (T g ~ 170 °C) than the DGEBA/DDM system. Also, tensile strength (60 MPa), storage modulus (3271 MPa), and elongation at break (2.8%) were higher. Additionally, the peak of heat release rate (PHRR) and the total heat release (THR) of the cured VTA-EP/DFA resin decreased, and LOI and UL-94 ratings were improved. The green epoxy thermoset exhibited good dissolution in various acidic conditions due to the degradability of the Schiff base network in contrast to DGEBA/DDM. This work demonstrates that the combination of biomass with Schiff base structure provides a versatile platform for the fabrication of multifunctional vanillin-derived epoxy thermosets.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
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IF 2.931
Fanyong Yan,Xiaodong Sun,Ruiqi Zhang,Yingxia Jiang,Jinxia Xu,Junfu Wei
Three enhanced fluorescence probes based on Rhodamine B-Schiff base structure were synthesized for detecting Cu 2+ . The corresponding detection limits were found to be 0.25 μM, 0.15 μM and 0.18 μM. Binding ratio and binding sites were determined by Job's and nuclear magnetic titration experiments. The binding constants obtained by the Benesi-Hildebrand equation to be 341.0 M −0.5 ,1.8 × 10 4 M −1 , and 265.4 M −0.5 , respectively. As isomers, the different effects of probes on Cu 2+ detection were researched. By adjusting the position and the size of the substituent group, the effects of binding sites and steric hindrance on the complexation ratio, response time and detection limit were discussed. Optimal spatial combination structure with Cu 2+ was obtained through energy calculation. Detection mechanism of Rhodamine B ring opening based on the complex of the Schiff base with Cu 2+ was confirmed. E. coli staining and detection of real water samples had expanded their applications.
研究领域:
分析化学
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生物化学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Brian Musikavanhu,Zeping Huang,Quanhong Ma,Yongdi Liang,Zhaoli Xue,Lei Feng,Long Zhao
A pyridine modified naphthol hydrazone Schiff base chemosensor, NaPy , was prepared in a two-step process to detect aluminum ion (Al 3+ ) in different samples. The probe shows a turn-off emission response towards Al 3+ at a 1:1 binding stoichiometry via intramolecular charge transfer (ICT) mechanism, as validated by density functional theory (DFT) calculations and a series of spectroscopic measurements. The response time is slightly over one minute with a limit of detection (LOD) value of 0.164 µM, demonstrating the great sensitivity of the probe. It is also found that NaPy exhibits high selectivity towards Al 3+ and resists interference from seventeen other cations. Application investigations in paper strips, water samples and HeLa cells suggest that NaPy can be used as an efficient probe for sensing Al 3+ in real environmental samples and biosystems.
研究领域:
分析化学
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环境科学
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生物医学
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DOI
PubMed
高影响因子
Royal Society Open Science
·
2025
·Vol. 12
·期 7
·
IF 2.9
Ruize Zhang,Jiaqi Zhong,Gaosheng Wu,Kaidi Xu,Xiaoli Xu,Xuliang Cui,Baoyun Xu,Xiaolei li
The development of recyclable bio-based epoxy resins has been the focus of research nowadays, particularly in light of increasing environmental concerns and the drive for resource recycling. Herein, two fully bio-based epoxy curing agents, VLYS (fully bio-based Schiff basic epoxy curing agent based on vanillin and lysine) and VLEV (fully bio-based Schiff basic epoxy curing agent based on vanillin and levodopa), were synthesized by reacting amino acids—lysine and levodopa, respectively—with vanillin. Both epoxy resins cured by these two hardeners, VLYS-E and VLEV-E, show high glass transition temperatures (Tg > 141°C) and superior mechanical properties (Young’s modulus >1000 MPa and flexural modulus >2900 MPa), which are far better than the resin system based on a petroleum-based curing agent. The incorporation of the Schiff base endows these resins with degradability and reprocessability, while exhibiting high-percentage retention of thermal and mechanical properties after two cycles. Taken together, these findings suggest that these fully bio-based curing agents hold significant potential to supplant conventional hardeners.
研究领域:
高分子化学
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材料科学
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环境科学
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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）