JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Cheng Cheng,Lijun Liu
Fine surfactant-stabilized emulsion separation from industrial produced water remains a critical challenge, as conventional membranes suffer from severe fouling, poor dual-phase adaptability, and limited stability. Herein, a high-performance oil–water separation membrane was fabricated via RAFT polymerization and dopamine post-functionalization, constructing a catechol-functionalized supramolecular network stabilized by hydrogen bonding and π-π stacking. This work features three core innovations: a well-defined catechol-functionalized PDMA- g -PEG-co-PDA terpolymer, liquid-triggered adaptive wettability without external stimuli, and a robust supramolecular network for enhanced mechanical and antifouling properties. The membrane exhibits exceptional hydration capability, realizing molecular discrimination of oil–water mixtures via distinct diffusion kinetics. It achieves > 99% separation efficiency for all tested oil-in-water/water-in-oil emulsions at a high flux of ~850 L·m −2 ·h −1 and maintains > 99% efficiency after 15+ recyclable cycles. This intelligent amphipathic membrane addresses key limitations of traditional separation materials, offering a sustainable high-throughput solution for industrial oily wastewater treatment and environmental remediation, advancing the design of adaptive separation materials.
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2019
·
IF 2.781
Yawen Song,Minggang Zhao,Xingtao Wang,Huiyan Qu,Ying Liu,Shougang Chen
The multi-walled carbon nanotubes decorated with Co 3 O 4 nanoparticles (Co 3 O 4 /MWCNTs) were successfully prepared by the hydrothermal method . A facile and practical electrochemical sensor based on Co 3 O 4 /MWCNTs was established for simultaneous detection of hydroquinone (HQ) and catechol (CC) by differential pulse voltammetry (DPV). The defined and separated oxidation peaks of a mixture of HQ and CC were obtained at pH 8.0, owing to the catalytic stability of Co 3 O 4 in alkaline conditions as well as the high conductivity and excellent adsorption of MWCNTs. The proposed sensor exhibited the wide linear range from 10 to 800 μM (HQ) and 10–700 μM (CC), as well as the low detection limit of 5.6 μM (HQ) and 8.5 μM (CC). Meaningfully, in local seawater sample testing, the explored sensing platform achieved an excellent recovery for the simultaneous detection of CC (97.5–104.2%) and HQ (96.4–109.1%). According to the investigation, this is the first successful application of HQ and CC in direct seawater detection. This work demonstrated the Co 3 O 4 /MWCNTs nanocomposite was a promising material for electro-catalysis and electro-analyst in the marine environment.
研究领域:
分析化学
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环境科学
·
电化学
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高影响因子
Analytical Methods
·
2024
·Vol. 16
·期 11
·1686-1696
·
IF 2.7
Xinyue Zhang,Si Wu,Tao Feng,Yuanhao Yan,Shijing Wu,Yinyu Chen,Yu Wang,Qingmiao Wang,Ning Hu,Li Wang
Based on the versatile properties of bio-derived materials, non-enzymatic assays in combination with electronic devices have attracted increasing interest. Here, we report a novel enzyme-free visualization approach for the detection of erythritol, which is a zero-calorie natural sweetener and serves as an ideal sucrose substitute for diabetics or overweight people who need sugar control. The recognition element of the electrochemical biosensor was constructed by catechol modification on a chitosan-based hydrogel film. The signal transduction was achieved by the competitive binding assay of sweeteners. The results show that 2-fluorophenylboronic acid (FPBA) can form a cyclic boronate ester with the ortho-hydroxyls of both reduced catechol and oxidized quinone, impeding the electron transfer and leading to redox signal attenuation. The addition of sweeteners caused a competitive reaction resulting in bonding between the 1,2-diols and FPBA moieties, and in the recovery of the redox signals. Importantly, the pattern of redox signal changes of catechol can be detected optically, as the oxidized quinone state is darker in color than the reduced catechol state. Using a simple cell phone imaging application, we demonstrate that erythritol can be distinguished from other sweeteners in real samples using the oxidized catechol-Chit0/agarose hydrogel film. Thus, we envision that this method could allow diabetics and people who need to control their sugar intake to detect whether the product contains only erythritol in the field or at home. In addition, this work further illustrates the potential of bio-derived materials for performing redox-based functions and enzyme-free visualization assays.
研究领域:
生物化学
·
分析化学
·
材料科学
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DOI
PubMed
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2026
·
IF 3.9
Renfeng Zhou,Ziyun Li,Shengwei Fang,Chao Wang,Huagang Ni,Peng Ye
Waterborne polyurethane (WPU) pressure-sensitive adhesives are relatively environmentally friendly but often suffer from poor water resistance due to hydrophilic groups. In this study, a catechol-functionalized internal emulsifier (HEA-LDA) was synthesized via the aza-Michael addition of levodopa (LDA) and hydroxyethyl acrylate (HEA) and incorporated into WPU dispersions. A micelle-peripheral in situ crosslinking strategy was employed to orient catechol groups toward the micellar shell, enabling oxidative crosslinking after film formation to enhance cohesion and interfacial adhesion. The effects of HEA-LDA content on particle size, storage stability, water resistance, and peel adhesion were systematically investigated and compared with dopamine-modified WPU (WPU-DA). The results showed that HEA-LDA effectively regulated micelle size and improved emulsion stability, water resistance, and adhesive performance. At an LDA/DMPA molar ratio of 1:1, WPU-LDA exhibited optimal performance, achieving 180° peel strengths of 39.79 N/25 mm and 37.33 N/25 mm on stainless steel under dry and wet conditions, respectively. Sodium periodate-induced oxidative crosslinking further increased peel strength on pigskin from 18.79 N/25 mm to 34.47 N/25 mm. Compared with pure WPU and WPU-DA, WPU-LDA showed lower weight loss and swelling ratios, demonstrating a biomimetic molecular design strategy for highly water-resistant and strongly adhesive WPU pressure-sensitive adhesives. Graphical A bioinspired catechol-functionalized internal emulsifier regulates micellar structure and enables micelle-peripheral oxidative crosslinking in waterborne polyurethane adhesives. The resulting synergistic enhancement of cohesion and interfacial adhesion delivers outstanding water resistance and peel strength, providing a molecular design strategy for advanced pressure-sensitive adhesives.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Jinxuan Zhang,Fangfang Zhou,Sushuang Li,Yinhua Wan,Jianquan Luo
Nanofiltration (NF) technology is promising for treatment of wastewater containing micropollutants (MPs) because it can retain both MPs and small organics while permeate inorganic salts. However, both MPs adsorption and organic fouling formation deteriorate NF membrane performance. In this work, a novel surface functionalization strategy is proposed to tackle both two issues. Based on catechol-amine chemistry, a commercially available NF membrane is modified by tannic acid-3-aminopropyltriethoxysilane (TA–APTES) coating and subsequent horseradish peroxidase (HRP) immobilization. Taking aflatoxin B1 (AFB1) as an example of MPs, its adsorption on the modified NF membrane is greatly inhibited by coating induced pore narrowing (enhancing size exclusion to MPs), surface barrier effect (alleviating the interaction between MPs and membrane) and enzymatic self-cleaning ability (degrading MPs adsorbed on the membrane), resulting in higher and more stable AFB1 rejection (~90%). The flux decline and irreversible fouling are also reduced by the amphiphilic property of the immobilized HRP on the membrane surface when treating corn soaking solution. Although the on-line self-cleaning operation in the presence of hydrogen peroxide can alleviate concentration polarization by interfacial catalytic reaction , the flux decline and irreversible fouling become severer possibly due to the pore blocking by the degraded products. The off-line self-cleaning after the filtration enables to remove loose fouling layer, but the dense fouling layer impedes the accessibility of hydrogen peroxide to the immobilized HRP, limiting its self-cleaning ability. Therefore, catalytic intensity, enzymatic products and substrate accessibility to enzyme should be considered when constructing a self-cleaning NF membrane to deal with combined fouling.
研究领域:
环境科学
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膜技术
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水处理
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化学工程
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DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2018
·
IF 1.686
Lei Xu,Lei Zhang,Zhiqiao Chen,Fengxi Yu,Jingfa Li
In this study, we employ a type of polyoxotitanate (POT) compound with a unique structure that is composed of a metal-oxo core and functionalized by catechol ligands, and characterize its electrochemical and photoresponsive properties. We find that the POT functionalized by the catechol ligand acts as a photoresponsive single source to provide the photocurrent in aqueous electrolyte . The first principles calculation confirms the intramolecular ligand-to-metal charge transfer characters. Considering the stable photocurrent output generated by the POT in the aqueous condition, we anticipate potential applications of the catechol-functionalized POT in the optoelectronic devices that require water stability and aesthetic features.
研究领域:
材料科学
·
化学
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DOI
高影响因子
International Journal of Electrochemical Science
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2023
·
IF 1.5
Zan Lu,Dongning Li,Qianli Zhang,Jie Wei
Nitrogen doped reduced graphene oxide (N-RGO) was prepared by a facile one-step procedure with ammonium hydroxide as the doping regent and hydrazine hydrate as the reducing regent. The obtained N-RGO was characterized by transmission electron microscope (TEM), Fourier transform infrared spectra (FTIR) and X-ray photoelectron spectroscopy(XPS). The characterized results validated the successful nitrogen doping of 1.8 at% and the reducing of graphene oxide to RGO. N-RGO modified glassy carbon electrode (N-RGO/GC) was explored for the simultaneous determination of hydroquinone (HQ) and catechol (CC) using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The potential separation of the oxidation peaks between HQ and CC were up to 110 mV, which is enough to electrochemical distinguish the dihycroxybenzene isomers. Under the optimal conditions, the oxidation peak currents of HQ and CC linearly increased with the concentrations in the ranges from 5 to 693 and 5 to 492 μmol/L, respectively. The detection limits are 0.1 μmol/L for HQ and 0.5 μmol/L for CC. When simultaneously changing the concentration of the two isomers, the linear range was from 15 to 330 μmol/L for both HQ and CC. The relative standard deviations (n=20) are 3.45% for HQ and 3.82 % for CC.
研究领域:
分析化学
·
材料科学
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2020
·
IF 3.807
Lijun Zhou,Xueling Shan,Ding Jiang,Wenchang Wang,Zhidong Chen
Catechol (CC) exists a potential threat to human psychology and physiology. In this research, a novel ultra-sensitive electrochemiluminescence (ECL) sensor was established to detect CC based on carbon dots (CDs) and metal organic framework (HKUST-1) synergy system. The results showed good large specific surface area of HKUST-1 on CDs which could effectively improve the sensitivity of sensor. Under the optimal conditions, the as-fabricated sensor illustrated a wide linear range of 5.0 × 10 −9 –2.5 × 10 −5 mol/L with the detection limit of 3.8 × 10 −9 mol/L(S/N = 3). In addition, owning to its good reproducibility and stability, the sensor had been successfully applied to the actual sample. This work provides an important reference for the application of metal organic framework materials (MOFs) in ECL researches and a novel method for detecting catechol.
研究领域:
分析化学
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环境科学
·
生物医学工程
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产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2020
·Vol. 41
·期 9
·3817-3829
·
IF 2.265
Mengjie Zhang,Liu Liu,Lin Jin,Lihao Sun,Ming Li,Lei Shang,Yu Liu,Yuhui Ao
To improve interfacial adhesion between carbon fiber (CF) and epoxy resin, a low-cost and environment-friendly method was developed to treat the CF surface via the bio-inspired co-deposition of catechol (Cc) and polyethyleneimine (PEI). It is noteworthy that the deposition process reacts at room temperature with water as solvent, and does not require harsh conditions or the use of toxic reagents. After treatment, the CF/epoxy composites were endowed with excellent mechanical properties and showed increases of 51.9% and 51.7% for flexural strength and ILSS, respectively, in comparison with unsized CF laminates. The analyses of fractured surface morphologies and strengthening mechanism of the composites indicated that the uniformly coated Cc-PEI on the fiber surface can promote the diffusion and entanglement of the matrix molecular chains and form chemical bonding as well as π-π stacking, thus effectively improving the interfacial adhesion. In addition, the facile process disclosed in this study can provide a new strategy to not only for CF treating but also expected to be used in the modification of other high performance fiber reinforcement and industrial applications.
研究领域:
材料科学
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表面处理
·
复合材料工程
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 41
·34096-34102
·
IF 3.289
Wen-Ze Qiu,Yan Lv,Yong Du,Hao-Cheng Yang,Zhi-Kang Xu
High performance nanofiltration (NF) membranes are facilely fabricated via the co-deposition of catechol (CCh) and polyethylenimine (PEI) on the surface of a polysulfone (PSf) ultrafiltration membrane, with subsequent cross-linking by glutaraldehyde (GA). The surface properties of the studied membranes have been investigated in detail by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning election microscopy, atomic force microscopy, zeta potential, and water contact angle. The NF performance of the membranes are dependent on the CCh/PEI ratio, co-deposition time and cross-linking condition. Results reveal that the optimum membrane yields a rejection of 88% and a permeation flux of 25 L m−2 h−1 when filtrating the 1000 mg L−1 MgCl2 solution at 0.6 MPa. And the negatively charged membrane surface is related to the following salt rejection sequence: MgSO4 > Na2SO4 > MgCl2 > CaCl2 > NaCl. Meanwhile, the membranes show excellent operation stability during a 240 h consistent filtration test.
研究领域:
材料科学
·
环境工程
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2014
·
IF 2.235
Qi Sun,Cong Zhang,Huan Sun,Hui Zhang
Novel porous magadiite/Al-magadiite heterostructures (PMH/PAMH) and aluminated derivatives of PMH (xAl-PMH, x = Al/Si in feeding) were fabricated upon two-dimensional interlayer cosurfactant-directing TEOS hydrolysis–condensation–polymerization from synthetic Na-magadiite/Na-[Al]magadiite and postgrafting of Al into the interlayer silica framework of PMH from NaAlO2 precursor, respectively. Characterization studies indicate that PMH and PAMH possess high surface area (SA), high thermal stability, and unique supermicro–mesoporous structure upon effective assembly of interlayer mesostructured silica and clay layers but weak Lewis acidity. The xAl-PMH (x = 0.2, 0.4) samples show successful incorporation of Al into interlayer mesostructure of PMH mainly in tetra-coordinated form, leading to greatly increased Lewis acidity and newly created Brønsted acidity together with well-kept layered supermicro-mesoporous porosity and reduced SA (>280 m2/g) while 0.6Al-PMH shows collapsed layers. 0.4Al-PMH exhibits the highest liquid-phase Friedel–Crafts tert-butylation activity of catechol with 93.4% conversion and 80.4% 4-tert-butylcatechol selectivity due to the strongest synergy between the surface acidity and supermicro–mesostructure.
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DOI
高影响因子
ANALYST
·
2015
·Vol. 141
·期 3
·1077-1082
·
IF 4.107
Xiuyun Wang,Min Xi,Mengmeng Guo,Fangmeng Sheng,Guang Xiao,Shuo Wu,Shunichi Uchiyama,Hiroaki Matsuura
In this contribution, a very simple and reliable strategy based on the easy modification of a glassy carbon electrode (GCE) by pre-electrolyzing GCE in ammonium carbamate aqueous solution was employed for the simultaneous determination of hydroquinone (HQ) and catechol (CC). Compared with bare GCE, the incorporation of nitrogen into the GCE surface structure improved the electrocatalytic properties of GCE towards the electro-oxidation of HQ and CC. The nitrogen-introduced GCE (N-GCE) was evaluated for the simultaneous detection of HQ and CC and the linear ranges for HQ and CC were both from 5 to 260 μM. Their detection limits were both evaluated to be 0.2 μM (S/N = 3). The present method was applied for the determination of HQ and CC in real river water samples with recoveries of 95.0–102.1%. In addition, a possible detection mechanism of HQ and CC was discussed.
研究领域:
电化学
·
分析化学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
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