Journal of the American Chemical Society
·
2023
·
IF 15
Ran Wang,Chong Li,Jianxiang Wu,Wei Du,Tao Jiang,Yizhou Yang,Xuejing Yang,Ming Gong
Sustainable polymer production is essential for a carbon-neutral society. cis,cis-Muconic acid is attracting growing interest as a biomass-derived platform molecule with direct access to adipic acid and terephthalic acid, prominent monomers of commercial polymers. Here, a sustainable route of electro-reforming biorenewable catechol to cis,cis-muconic acid with concurrent H2 production has been proposed. By using a CuO foam electrode, a high cis,cis-muconate yield of 90% and a high faradaic efficiency of 87% can be achieved under ambient conditions without external oxidant. Zn2+ coordination with the catechol is central to the yield and selectivity. In a combinatory analysis via steady-state electrochemical kinetics, in situ spectroscopy, and theoretical calculation, we revealed that the reaction ensemble of catechol electrooxidation involves three major processes of polymerization, ring cleavage, and depolymerization, in which Zn2+ coordination is highly effective in delaying polymerization and promoting ring cleavage toward cis,cis-muconate. The catecholate coordinated to the Zn2+ cations reallocated its electron density with partial structural deformation to accelerate the electron transfer and facilitate the OH– nucleophilic attack. A practical two-electrode system was eventually demonstrated to efficiently and stably electro-reform catechol into isolable cis,cis-muconic acid and hydrogen, providing solutions for polymer sustainability via utilizing alternative biomass resources and electrified processes.
研究领域:
化学工程
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环境科学
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材料科学
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DOI
PubMed
高影响因子
Foods
·
2025
·Vol. 14
·期 1
·133
·
IF 5.1
Chao Wang,Xiangchuan Wu,Xinhe Lin,Xueting Zhu,Wei Ma,Jian Chen
The use of nanozymes for electrochemical detection in the food industry is an intriguing area of research. In this study, we synthesized a laccase mimicking the MnO2@CeO2nanozyme using a simple hydrothermal method, which was characterized by modern analytical methods, such as transmission electron microscope (TEM), X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy (EDX), etc. We found that the addition of MnO2significantly increased the laccase-like activity by 300% compared to CeO2nanorods. Due to the excellent laccase-like activity of the MnO2@CeO2nanozyme, we developed an electrochemical sensor for the detection of hazardous phenolic compounds such as bisphenol A and catechol in red wines by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). We used the MnO2@CeO2nanozyme to develop an electrochemical sensor for detecting harmful phenolic compounds like bisphenol A and catechol in red wine due to its excellent laccase-like activity. The MnO2@CeO2nanorods could be dispersion-modified glassy carbon electrodes (GCEs) by polyethyleneimine (PEI) to achieve a rapid detection of bisphenol A and catechol, with limits of detection as low as 1.2 × 10−8M and 7.3 × 10−8M, respectively. This approach provides a new way to accurately determine phenolic compounds with high sensitivity, low cost, and stability.
研究领域:
食品科学
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生物化学
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分析化学
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PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 27
·17330-17336
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IF 4.036
Suhua Chen,Yuanyuan Lei,Junrong Xu,Yun Yang,Yiying Dong,Yanmei Li,Haomin Yi,Yilong Liao,Liyin Chen,Yi Xiao
Environmental pollution caused by aromatic compounds such as catechol (Cat) has become a major issue for human health. However, there is no simple, rapid, and low-cost method for on-site monitoring of Cat. Here, based on ECL quenching mechanism, we develop a simple, rapid and visual mesoporous silica (MSNs)-electrochemiluminescence (ECL) sensor for on-site monitoring of Cat. The mechanism of ECL quenching is due to the interaction between Cat and Ru(bpy)32+* and the interactions between the oxidation products of Cat and DBAE. MSNs films with ordered perpendicular mesopore channels exhibit an amplification effect of ECL intensity due to the negatively charged pore channel. There is a good linear relationship between ECL intensity and Cat concentration in the range of 10 ∼ 1000 μM with the limit of detection (LOD) of 9.518 μM (R2 = 0.99). The on-site sensor is promising to offer new opportunities for pharmaceuticals analysis, on-site monitoring, and exposure risk assessment.
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2015
·Vol. 77
·期 3
·666-674
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IF 1.532
Cui Wei,Wang Shixing,Peng Jinhui,Zhang Libo,Zhang Gengwei
Abstract We prepared the catechol-functionalized nanosilica for adsorption of germanium (Ge) ions from aqueous media. The functionalized nanosilica was characterized by FTIR, TGA, TEM, BET, and XPS. The influence of pH, Ge initial concentration, and time of the adsorption process was investigated. Under the optimum condition, the maximum adsorption capacity of Ge ions was 0.048 mg m −2 at pH 4.5. The adsorption mechanism is the chelating interaction between hydroxyl and Ge(OH) 4 . The functionalized nanosilica was able to selectively adsorb Ge ions from tellurium(IV) and boron. Langmuir isotherm was found to better fit the experiment data rather than Freundlich isotherm. The kinetics of the adsorption process of Ge ions on the functionalized nanosilica was investigated using the pseudo-first-order and pseudo-second-order models, and the results indicated that the pseudo-second order equation model provided the best correlation with the experimental results. Graphical Abstract
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Polymers
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2025
·Vol. 17
·期 12
·1658
·
IF 4.9
Chenkun Yu,Ze Liang,Ruoyao Zhou,Tingting Gao,Zhaojiang Wang,Xiaoxia Cai,Qian Lu,Cong Li,Jinshui Yao,Qinze Liu
Chromium (III) ions are essential for biological functions, whereas chromium (VI) ions (Cr (VI)) pose toxicity risks to both humans and animals. Therefore, it is crucial to remove these ions from industrial sources. In this work, to remove hazardous Cr (VI) from wastewater or convert it to Cr (III), catechol-modified alkali lignin (CAL) was prepared using catechol, acetone, and alkali lignin, which is a byproduct in the paper-pulping process. The sample was characterized using a combination of techniques, including scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Various factors influencing the adsorption behavior of CAL were investigated. The adsorption behavior aligns with the pseudo-second-order kinetic model and adheres to the Langmuir isotherm model. CAL simultaneously achieves Cr (VI) adsorption (498.4 mg/g) and reduction (54.6% to Cr (III)), surpassing single-function lignin adsorbents by integrating catechol’s redox capacity with lignin’s structural stability, which is another way to efficiently utilize Cr (VI) solutions. The mechanism of adsorption and reduction is discussed, which is influenced by its functional groups. In brief, this method paves a new path for the utilization of alkali lignin and provides novel opportunities for the removal of Cr (VI) contamination.
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PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2025
·
IF 6.2
Ya Zhou,Ruo-Ying Liu,Ning Fu,Xia Li,Bing-Zhi Li,Zhi-Hua Liu
Aromatic resources, including lignin-, petroleum-, and plastic-derived aromatic compounds, show great potential as feedstocks for producing aromatic fine chemicals. However, the heterogeneity of lignin and the complex conversion pathways of these aromatic derivatives hinder their value enhancement. In this study, an engineered Pseudomonas putida KT2440 was developed to efficiently convert diverse aromatic derivatives into catechol with an atom–economic conversion. By screening and expressing heterologous protocatechuate decarboxylases, a “biological funnel” pathway was constructed, successfully converting lignin-derived ferulic acid and p-coumaric acid into catechol. Expressing the rate-limiting enzymes of VanAB and PobA minimized the accumulation of intermediates, such as vanillic acid and p-hydroxybenzoic acid, producing a catechol titer of 8.8 mM. A cofactor regeneration strategy for protocatechuate decarboxylases enhanced their activity, achieving a catechol titer of 14.1 mM with a molar yield of 98.5%. Additionally, catechol-producing “biological funnels” were established by covalorizing diverse aromatic substrates, including phenol, guaiacol, sodium benzoate, and terephthalic acid. Artificial microbial consortia subsequently consumed these heterogeneous substrates and facilitated efficient catechol production. Overall, the design of artificial biological funnels and microbial consortia enabled the valorization of heterogeneous aromatic derivatives into catechol, providing a sustainable valorization route of these aromatic resources toward aromatic fine chemicals.
研究领域:
合成生物学
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生物催化
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代谢工程
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微生物生物技术
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绿色化学
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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Yifan Sun,Xuantong Gan,Bingrui Tong,Xiaoyue Yao,Hui Liu
Phenolic compounds, including catechol, pose significant environmental threats due to their high toxicity and low biodegradability. However, owing to the complex procedures, high cost, and low specificity of the present detection techniques, the on-site and real-time monitoring of catechol in real water remain challenging for practical use. In this work, we developed a FeS-rGO micro-nanocomposite-based biosensor for trace catechol detection in water. The material was engineered through a hydrothermal and oriented self-assembly approach that enabled in-situ growth of flower-like FeS on rGO, effectively preventing FeS agglomeration and enhancing interfacial integration. This designed structure synergistically combines the high surface area of FeS with the conductivity of rGO, promoting efficient electron transfer and catalytic activity. After laccase immobilization, the biosensor exhibits high selectivity for catechol against interfering phenols, with a sensitivity of 253 μA·mM −1 ·cm −2 and a broad linear range from 10 nM to 8.12 mM, which demonstrates potential application in the early-warning and treatment of environmental pollutant leakage.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Jing Chen,Yaqin Shi,Wenli Xue,Wenjing Liu,Rongfang Ma
Catechol is an important fine chemical raw material, and is widely used in the production of chemicals. However, this compound has low degradability and high toxicity, and was highly susceptible to release into the environment during production and application, posing a potential threat to ecosystems and human health. Therefore, in this paper, a PVP-functionalized NH 2 -Ti-MOF was synthesized using PVP as a shape-controlling agent, NH 2 -BDC as an organic ligand, and TBOT as a metal source. A sensor for dual-mode detection of catechol was constructed based on the interaction between catechol and PVP-NH 2 -Ti-MOF. When catechol was added to the probe solution, the fluorescence intensity at 428 nm was found to decrease based on the static quenching effect. At the same time, it was found that a new ultraviolet absorption peak appeared at 282 nm in the ultraviolet absorption spectrum, and the absorption peak intensity increased with the increase of catechol concentration, thus realizing the dual mode detection of catechol. Compared with the single-mode sensor, the dual-mode sensor is more accurate, fast and sensitive, which provides a new idea for the detection of catechol in water samples.
研究领域:
环境化学
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材料科学
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传感器与生物传感器
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分析化学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiao Wang,Yuanyuan He,Beibei Cui,Yuan Feng,Jingjing Lin,Xirui Long,Yanchao Wang,Zhen Li,Feng Luo,Jiehua Li,Hong Tan
As a class of novel antimicrobial agents, antimicrobial peptides (AMPs) are meant to be the next generation antibiotics. Defects in toxicity, stability, and antimicrobial activity hinder the clinical use. The assembly method was designed to solve the defects of AMPs. Herein, an effective strategy for introducing catechol-derivative 3,4-dihydroxy- L -phenylalanine (DOPA) into the well-studied MP196 (RWRWRW-NH 2 ) to alleviate the disadvantages is proposed. Smaller particle size is given by introducing zwitterionic peptide with same design. Catechol-induced peptide assembly results in better antimicrobial activity. And catechol groups could also eliminate free radicals leading to the ability to regulate inflammation. Mechanism study confirmed the membrane disruption behavior and the influence of the ΔpH on the proton motive force (PMF) of bacteria. The catechol-induced assemblies can also effectively resist the influence of enzymes and serum on their antibacterial efficacy. Efficacy of peptide assembly in vivo shows over 92 % reduction in bacteria, mitigation of inflammation, and acceleration of wound healing. This work suggested that vesicles made from catechol-induced assembly AMP and zwitterionic peptides may be a new method to solve the drawbacks of AMP for further usage.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Dongying Zhang,Qianqian Ouyang,Zhang Hu,Sitong Lu,Weiyan Quan,Puwang Li,Yu Chen,Sidong Li
Chitosan-based thermosensitive hydrogels have been widely used in drug delivery and tissue engineering, but their poor bioactivity has limited their further applications. Integral active oyster peptide microspheres (OPM) with an average particle diameter of 3.9 μm were prepared with high encapsulation efficiency (72.8%) and loading capacity (11.9%), exhibiting desirable sustained release effects. Using catechol functionalized chitosan (CS-C) as the polymeric matrix, OPM as the filler, and β-sodium glycerophosphate (β-GP) as a thermal sensitizer, the thermosensitive hydrogel CS-C/OPM/β-GP was prepared. Besides, the application of the hydrogel on wound healing was studied, and its biosafety was evaluated. The results of cell migration in vitro showed that the cell migration rate of CS-C/OPM/β-GP reached 97.47 ± 5.41% within 48 h, indicating that the hydrogel accelerated the migration of L929 cells. As demonstrated in the mouse skin wound experiment, CS-C/OPM/β-GP hydrogel not only inhibited the aggregation of diversified inflammatory cells and accelerated the generation of collagen fibers and new blood vessels of the wound, but also enhanced the synthesis of total protein (TP) in granulation tissue, and up-regulated the expression of Ki-67 and VEGF in the injury, thereby achieving fast wound healing. Safety evaluation results showed that CS-C/OPM/β-GP hydrogel was not cytotoxic to L929 cells, and the hemolysis ratio was less than 5% within 1 mg/mL. In conclusion, CS-C/OPM/β-GP hydrogel is expected as a promising medical dressing for wound healing.
研究领域:
材料科学
·
生物医学工程
·
组织工程
·
药物递送系统
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产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 40
·405401
·
IF 3.953
Chenzhi Wu,Tong Wu,Zhenbin Tang,Juguo Dai,Birong Zeng,Yiting Xu,Guorong Chen,Weiang Luo,Conghui Yuan,Lizong Dai
We report a simple metal ion-catechol coordination strategy to coat ruthenium-catechol polymer complex (TAC-Ru) on the surface of carbon nanotubes (CNT) to form a core–shell structure (abbreviated as CNT@TAC-Ru). This is achieved by firstly polymerizing catechol and boronic acid monomers on the surface of CNT to form a boronate ester polymer (BP) shell. Then, Ru3+ is used to etch the BP shell, and cleave the dynamic boronate ester bond, leading to the formation of a CNT@ruthenium-catechol coordination complex based on the coordinative efficiency of the catechol group. The electrocatalytic property of the CNT@TAC-Ru composite can be activated through electrochemical cycling treatment. The as-activated CNT@TAC-Ru exhibits evidently improved hydrogen evolution reaction (HER) performance with an overpotential of 10 mV in 1.0 M KOH at a current density of 10 mA cm−2 , which is better than that of commercial Pt/C (32 mV). And the long-term stability is also desirable. This work provides a pyrolysis-free method to form metal-polymer-carbon composite with high HER performance under the alkaline condition.
研究领域:
材料科学
·
电化学
·
能源转化与储存
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Qin Tu,Qingmiao Zhang,Yilei Wang,Ying Jiao,Jingcheng Xiao,Tangqiong Peng,Jinyi Wang
We have prepared the graphene oxide (GO)- a catechol derivative –dopamine methacrylamide monomer (DMA) composite modified poly (dimethylsiloxane) (PDMS) surfaces by π−π stacking of 1-pyrenebutyric acid on the GO and dopamine surface. PDMS substrates were first oxidized by plasma to transform the Si−CH 3 groups on their surfaces into Si−OH groups. Subsequently, aminopropyltriethoxysilane (γ-APS) was immobilized onto the PDMS−OH surface, and 1-pyrenebutyric acid (PA) was then bonded covalently onto the PDMS-γ-APS surfaces by the amidation reaction. Finally, PDMS-GO-DMA surfaces were prepared by modifying GO-DMA composites onto the PDMS-PA surface by π−π stacking between 1-pyrenebutyric acid and GO-DMA. Various characterization techniques, including contact angle measurements, attenuated total reflection infrared spectroscopy (ATR-FTIR), and X-ray photoelectron spectroscopy (XPS), were used to ascertain the successful prepared the PDMS-GO-DMA surface. The antibacterial ability of PDMS-GO-DMA surface was investigated by the classic colony and visible spectrophotometry methods. The results showed that PDMS-GO-DMA surface displayed antibacterial activity against both Gram-negative ( Escherichia coli ) and Gram-positive ( Staphylococcus aureus ) bacteria compared with native PDMS surface. Furthermore, we studied the biocompatibility of the PDMS-GO-DMA by culturing the cell lines (HepG2 and A549) on the PDMS-GO-DMA surface which exhibited excellent biocompatibility. Additionally, our results present possible uses for the PDMS–GO-DMA surface as antibacterial functional surfaces in biomedical microdevices applications.
研究领域:
材料科学
·
生物学
·
医学
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DOI
高影响因子
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