JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 2
·1941-1950
·
IF 2.478
Chen Jiabing,Lu Youluan,Huang Leshu,Shi Zhen,Zheng Yin,Song Xinjian,Wu Chenyi,Wu Zaikun
The fouling and passivation of the electrodes tend to reduce the sensitivity and lifetime of the electrodes. In this work, the mesoporous carbon-doped La-TiO 2 modified electrode not only has a good detection signal for catechol and hydroquinone, but also can achieve the purpose of electrode regeneration under illumination. A series of porous carbon materials LTOF-T (La-Ti Organic Frameworks-Temperature, LTOF-T) were prepared by hydrothermal method and pyrolysis method using La(NO 3 ) 3 ⋅6H 2 O, p -tricarboxylic acid, citric acid monohydrate, and tetra- n -butyl titanate as raw materials. The materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N 2 adsorption–desorption, and Raman spectroscopy. The electrochemical behaviors of catechol (CA) and hydroquinone (HQ) on different electrodes were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Under the optimal conditions, HQ and CA concentrations were linear in the range of 0.4–20 μmol/L, and the detection limits were 0.039 μmol/L (HQ) and 0.034 μmol/L (CA) at the signal noise ratio of 3. The electrode can be regenerated under visible light irradiation within 60 min.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Gels
·
2022
·Vol. 8
·期 5
·307
·
IF 4.432
Zhichuan Tang,Zhengsong Qiu,Hanyi Zhong,Yujie Kang,Baoyu Guo
The problem of wellbore stability has a marked impact on oil and gas exploration and development in the process of drilling. Marine mussel proteins can adhere and encapsulate firmly on deep-water rocks, providing inspiration for solving borehole stability problem and this ability comes from catechol groups. In this paper, a novel biopolymer was synthesized with chitosan and catechol (named “SDGB”) by Schiff base-reduction reaction, was developed as an encapsulator in water-based drilling fluids (WBDF). In addition, the chemical enhancing wellbore stability performance of different encapsulators were investigated and compared. The results showed that there were aromatic ring structure, amines, and catechol groups in catechol-chitosan biopolymer molecule. The high shale recovery rate demonstrated its strong shale inhibition performance. The rock treated by catechol-chitosan biopolymer had higher tension shear strength and uniaxial compression strength than others, which indicates that it can effectively strengthen the rock and bind loose minerals in micro-pore and micro-fracture of rock samples. The rheological and filtration property of the WBDF containing catechol-chitosan biopolymer is stable before and after 130 °C/16 h hot rolling, demonstrating its good compatibility with other WBDF agents. Moreover, SDGB could chelate with metal ions, forming a stable covalent bond, which plays an important role in adhesiveness, inhibition, and blockage.
研究领域:
石油工程
·
生物材料科学
✓ 已验证
DOI
高影响因子
Science Bulletin
·
2023
·
IF 18.9
Weikang Wang,Yan Bai,Pin Yang,Shuai Yuan,Feiyang Li,Weiwei Zhao,Beibei Jin,Xuan Zhang,Shujuan Liu,Daqiang Yuan,Qiang Zhao
Chemical transformation strategy is capable of fabricating nanomaterials with well-defined structures and fascinating performance via controllable crystallization kinetics in the phase transformation. V 2 CT x MXene has been used as precursors to fabricate vanadium porphyrin metal–organic frameworks (V-PMOFs) via the coordination of deprotonated carboxylic acid ligands. However, the rational and in-depth exploration of synthesis mechanism with the aim of enriching the variety of MXene (i.e., Ti 3 C 2 T x ) and organic ligands (i.e., catechol-based) to design new MOFs is rarely reported. Herein, we have first developed a metal ion assistant transformation strategy to synthesize three-dimensional catechol-based TiCu-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) MOFs with a non-interpenetrating SrSi 2 ( srs ) framework using two-dimensional Ti 3 C 2 T x as precursors. The unique synergetic transformation mechanism involves the electron transfer from Ti 3 C 2 T x to electrostatically adsorbed Cu 2+ ion for redox reaction , the subsequent Ti–C bond rupture for Ti 4+ ion release , and the continuous chelation coordination between Ti 4+ /Cu 2+ and HHTP. Ti 3 C 2 T x precursors and auxiliary metal ion could be rationally substituted by V 2 CT x and M n + (e.g., Ni 2+ , Co 2+ , Mn 2+ , and Zn 2+ ), respectively. This strategy lays the foundation for the design and synthesis of innovative and multifarious MOFs derived from MXene or other unconventional metal precursors .
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2014
·
IF 4.331
Bo Li,Lijian Ma,Yin Tian,Xiaodan Yang,Juan Li,Chiyao Bai,Xiaoyu Yang,Shuang Zhang,Shoujian Li,Yongdong Jin
We proposed a new approach for preparing an efficient uranium-selective solid phase extractant (HTC-btg) by choosing bayberry tannin as the main building block and especially glyoxal as crosslinking agent via a simple, economic, and green one-pot hydrothermal synthesis. The results of characterization and analysis show that after addition of glyoxal into only bayberry tannin-based hydrothermal reaction system, the as-synthesized HTC-btg displayed higher thermal stability, larger specific surface area and more than doubled surface phenolic hydroxyl groups. The sorption behavior of the sorbents toward uranium under various conditions was investigated in detail and the results indicated that the process is fast, endothermic, spontaneous, and pseudo-second-order chemisorption. The U(VI) sorption capacity reached up to 307.3 mg g −1 under the current experimental conditions. The selective sorption in a specially designed multi-ion solution containing 12 co-existing cations over the range of pH 1.0–4.5 shown that the amount of uranium sorbed accounts for about 53% of the total sorption amount at pH 4.5 and distinctively about 85%, unreported so far to our knowledge, at pH 2.0. Finally, a possible mechanism involving interaction between uranyl ions and phenolic hydroxyl groups on HTC-btg was proposed.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 39
·25778-25785
·
IF 4.036
Xiayi Liang,Wenhao Zhang,Mengqi Zhang,Guanhua Qiu,Yuhong Zhang,Tao Luo,Cunqing Kong
Development of nanomaterial-based electrochemiluminescence (ECL) emitters is highly desirable for the fabrication and wide applications of ECL sensors. Herein, nitrogen-doped graphene quantum dots (NGQDs) were easily synthesized as nanocarbon emitters with anodic ECL for sensitive ECL determination of catechol (CC). Facile synthesis of NGQDs was easily achieved using molecular fusion of a carbon precursor in a one-step hydrothermal process. The synthesis has advantages of simple and convenient operation and high yield. The as-prepared NGQDs have uniform size, good crystallinity, single-layered graphene structure, and excitation-independent fluorescence. In the presence of hydrogen peroxide (H2O2), NGQDs exhibit high anodic ECL owing to the presence of functional hydrazide groups. As CC could significantly reduce the ECL intensity of NGQDs, sensitive determination of CC was realized with a linear range from 100 nM to 10 μM and 10 μM to 60 μM with a low limit of detection (LOD, 42 nM). The determination of CC in environmental water was also achieved with high reliability.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2014
·
IF 2.871
Jiapeng Fu,Dawei Li,Guohui Li,Fenglin Huang,Qufu Wei
We report a facile approach to synthesize and immobilize silver nanoparticles (AgNPs) onto carboxymethyl cellulose (CMC)-modified electrospun cellulose nanofibers and demonstrate the potential application of as-prepared AgNPs-CMC/cellulose composite nanofibrous mats as effective biosensor substrate materials. Cellulose nanofibers were prepared by the combination of electrospinning with deacetylation. Then, CMC was adsorbed onto cellulose nanofibers to complex silver ions through the chemical binding with the free carboxyl groups of CMC for subsequent reductive formation of AgNPs . The AgNPs-CMC/cellulose nanofibers immobilized with laccase (Lac) by electrostatic interactions were used as biosensor substrate materials for catechol detection. The cyclic voltammetries revealed that the AgNPs-CMC/cellulose nanofibers was beneficial to the immobilization of Lac and facilitated the direct electron transfer between Lac and electrode. Lac/AgNPs-CMC/cellulose/glassy carbon electrode exhibited a detection limit of 1.64 μM (S/N = 3), and a wide linear range from 4.98 μM to 3.65 mM, as well as good repeatability, reproducibility, stability, and selectivity. The CMC/cellulose nanofibrous mats have great potential applications as substrate materials for different biosensors by immobilizing other different functional nanoparticles or enzyme on them.
研究领域:
材料科学
·
生物传感
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2014
·
IF 3.902
Hao Li,Bo Pan,Shaohua Liao,Di Zhang,Baoshan Xing
Iron is rich in soils, and is recently reported to form stable complexes with organic free radicals, generating environmentally persistent free radicals (EPFRs). The observation may challenge the common viewpoint that iron is an effective catalyst to facilitate the degradation of various organic chemicals. But no study was specifically designed to investigate the possible inhibited degradation of organic chemicals because of the formation of EPFRs in dry environment. We observed that catechol degradation under UV irradiation was decreased over 20% in silica particles coated with 1% hematite in comparison to uncoated silica particles. Stabilized semiquinone or quinine and phenol radicals were involved in HMT-silica system. EPFR formation was thus the reason for the reduced catechol degradation on HMT-silica surface under UV irradiation at ambient temperature. EPFRs should be incorporated in the studies of organic contaminants geochemical behavior, and will be a new input in their environmental fate modeling.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 3
·1-8
·
IF 5.479
Kong Fen-Ying,Li Rong-Fang,Yao Lei,Wang Zhong-Xia,Li Heng-Ye,Lv Wei-Xin,Wang Wei
An electrochemical sensor is described for the simultaneous determination of the pollutants catechol (CC) and hydroquinone (HQ). A glassy carbon electrode (GCE) was modified with reduced graphene oxide, Fe 3 O 4 and gold nanoparticles and then showed a pair of well-defined voltammetric peaks for CC and HQ. Its oxidation peak potentials (located at 0.21 and 0.10 V vs. Ag/AgCl) are well separated, and this makes it suitable for simultaneous determination of the two isomers. Under optimal conditions, the oxidation peak currents of CC and HQ increase linearly in the 0.05–550 μM and 0.1–500 μM concentration ranges, even in the presence of 0.1 mM of the respective other isomer. The detection limits are 0.02 and 0.17 μM (at S/ N = 3), respectively. The modified GCE exhibits good selectivity and recovery when applied for the analysis of spiked wastewater.
Ternary hybrid nanomaterials of rGO-Fe 3 O 4 -Au was developed for simultaneous electrochemical determination of catechol (CC) and hydroquinone (HQ).
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NPG Asia Materials
·
2022
·Vol. 14
·期 1
·1-10
·
IF 10.761
Wen Guo-Yu,Zhou Xing-Long,Tian Xiao-Yu,Xie Rui,Ju Xiao-Jie,Liu Zhuang,Faraj Yousef,Wang Wei,Chu Liang-Yin
Pigmentary coloration can produce viewing angle-independent uniform colors via light absorption by chromophores. However, due to the limited diversity in the changes of the molecular configuration of chromophores to undergo color change, the existing materials cannot produce a wide range of visible colors with tunable color saturation and transmittance. Herein, we propose a novel strategy to create materials with a wide visible color range and highly tunable color saturation and transmittance. We fabricated a hydrogel with poly (acrylamide- co -dopamine acrylamide) networks swollen with Fe 3+ -containing glycerol/water in which the covalently crosslinked polyacrylamide backbone with pendant catechols can ensure that the hydrogel maintains a very stable shape. Hydrogels containing adjustable catechol-Fe 3+ coordination bonds with flexible light-interacting configuration changes can display a wide range of visible colors based on the complementary color principle. The catechol-Fe 3+ complexes can dynamically switch between noncoordinated and mono-, bis- and tris-coordinated states to harvest light energy from a specific wavelength across the whole visible spectrum. Therefore, these hydrogels can be yellow, green, blue, and red, covering the three primary colors. Moreover, color saturation and transmittance can be flexibly manipulated by simply adjusting the Fe 3+ content in the hydrogel networks. The versatility of these smart hydrogels has been demonstrated through diverse applications, including optical filters for color regulation and colorimetric sensors for detecting UV light and chemical vapors. This proposed smart hydrogel provides a universal color-switchable platform for the development of multifunctional optical systems such as optical filters, sensors, and detectors.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Wenjuan Dong,Zhuorong Fan,Ziyu Feng,Jia Shi,Xinyu Shi,Shengmei Song,Xiaojuan Gong,Wenting Liang
Phenolic compounds have increasingly serious damage to the environment, and it is imperative to develop new detection means for them. In this study, Mn-doped ZnS quantum dot (Mn/ZnS QDs) were synthesized and conjugated with horseradish peroxidase (HRP) via its ligand N-acetyl-L-cysteine (NAC) to form a bionanoconjugates with the phosphorescent response, named Mn/ZnS QDs-HRP. In the presence of a small amount of hydrogen peroxide, phenolic compounds can quench the phosphorescence of Mn/ZnS QDs-HRP, and the quenching type is speculated to be a synergistic effect of dynamic mechanism and internal filtration effect. Taking catechol as an experimental object, the phosphorescence signal of Mn/ZnS QDs-HRP showed a good linear correlation with the concentration of catechol, and the detection limit was 0.068 μM (S/N = 3). The strong anti-interference ability of room temperature phosphorescence endows the probe with excellent sensitivity, and the specific recognition performance of the enzyme makes it have excellent selectivity. Moreover, the probe exhibits good repeatability and stability. When used for actual sample detection, Mn/ZnS QDs-HRP provides stable and reliable quantification of catechol in different water samples with spiked recoveries of 92.3–104.4 %. This study provides a sensitive, convenient, and efficient phosphorescent response sensor for detecting phenolic compounds, which is of positive significance for environmental protection.
研究领域:
环境科学
·
生物化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Le Wang,Yue Sun,Hao Zhang,Wenqi Shi,Hui Huang,Yongxin Li
Nanozymes, an unusual category of nanomaterials possessing enzymatic properties, and have generated considerable interest regarding their application feasibilities on several important fronts. In the present work, an innovative sensing device for catechol was established ground on a fluorescent nanozyme (Cu-BDC-NH 2 ) that exhibited catechol oxidase activity. The fluorescent nanozyme combines both functions of catechol recognition and response signal output, and can realize the sensing of catechol without the addition of other chromogenic agents. In the existence of Cu-BDC-NH 2 , catechol can be oxidized efficiently to produce quinones or polymers with strong electron absorption capacity, which immediately results in efficient fluorescence quenching of Cu-BDC-NH 2 . However, other common phenolic compounds, such as phenol, the other two diphenols (hydroquinone and resorcinol), phloroglucinol, and chlorophenol, do not result in efficient fluorescence quenching of Cu-BDC-NH 2 . The method shows a nice linear relationship between catechol concentration prep the fluorescence intensity of Cu-BDC-NH 2 in the scope of 0–10 μM, with a detection limit of 0.997 μM. The detection of catechol in actual water samples has also achieved the satisfactory consequences, which provides a new strategy for the convenient and selective detection of catechol.
研究领域:
纳米技术
·
分析化学
·
环境监测
·
生物传感器
·
材料科学
✓ 已验证
DOI
高影响因子
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
·
2022
·Vol. 195
·期 1
·298-313
·
IF 3.094
Liu Yani,Wei Fengdan,Xu Rui,Cheng Tao,Ma Yanling
Microbial remediation has become one of the promising ways to eliminate polycyclic aromatic hydrocarbons (PAHs) pollution due to its efficient enzyme metabolism system. Catechol 1,2-dioxygenase (C12O) is a crucial rate-limiting enzyme in the degradation pathway of PAHs in Achromobacter xylosoxidans DN002 that opens the benzene ring through the ortho-cleavage pathway. However, little attention has been given to explore the interaction mechanism of relevant enzyme–substrate. This study aims to investigate the binding interaction between C12O of strain DN002 and catechol by means of a molecular biological approach combined with homology modeling, molecular docking, and multiple spectroscopies. The removal rate of catechol in the mutant strain of cat A deletion was only 12.03%, compared to the wild-type strain (54.21%). A Ramachandran plot of active site regions of the primary amino acid sequences in the native enzyme showed that 93.5% sequences were in the most favored regions on account of the results of homology modeling, while an additional 6.2% amino acid sequences were found in conditionally allowed regions, and 0.4% in generously allowed regions. The binding pocket of C12O with catechol was analyzed to obtain that the catalytic trimeric group of Tyr164-His224-His226 was proven to be great vital for the ring-opening reaction of catechol by molecular docking. In the native enzyme, binding complexes were spontaneously formed by hydrophobic interactions. Binding constants and thermodynamic potentials from fluorescence spectra indicated that catechol effectively quenched the intrinsic fluorescence of C12O in the C12O/catechol complex via conventional static and dynamic quenching mechanisms of C12O. The results of ultraviolet and visible (UV) spectra, synchronous fluorescence, and circular dichroism (CD) spectra revealed conspicuous changes in the local conformation, and site-directed mutagenesis confirmed the role of predicted key residues during catalysis, wherein His 226 had a significant effect on catechol utilization by C12O. This is the first report to reveal interactions of C12O with substrate from the molecular docking results, providing the mechanistic understanding of representative dioxygenases involved in aromatic compound degradation, and a solid foundation for further site modifications as well as strategies for the directed evolution of this enzyme.
研究领域:
微生物学
·
环境科学
·
分子生物学
✓ 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）