Frontiers of Environmental Science & Engineering
·
2020
·Vol. 15
·期 4
·1-11
·
IF 4.053
Zhao Shanshan,Tao Zhu,Chen Liwei,Han Muqiao,Zhao Bin,Tian Xuelin,Wang Liang,Meng Fangang
Low-pressure membrane filtrations are considered as effective technologies for sustainable oil/water separation. However, conventional membranes usually suffer from severe pore clogging and surface fouling, and thus, novel membranes with superior wettability and antifouling features are urgently required. Herein, we report a facile green approach for the development of an underwater superoleophobic microfiltration membrane via one-step oxidant-induced ultrafast co-deposition of naturally available catechol/chitosan on a porous polyvinylidene fluoride (PVDF) substrate. Membrane morphology and surface chemistry were studied using a series of characterization techniques. The as-prepared membrane retained the original pore structure due to the ultrathin and uniform catechol/chitosan coating. It exhibited ultrahigh pure water permeability and robust chemical stability under harsh pH conditions. Moreover, the catechol/chitosan hydrophilic coating on the membrane surface acting as an energetic barrier for oil droplets could minimize oil adhesion on the surface, which endowed the membrane with remarkable antifouling property and reusability in a cyclic oil-in-water (O/W) emulsion separation. The modified membrane exhibited a competitive flux of ~428 L/(m 2 ·h·bar) after three filtration cycles, which was 70% higher than that of the pristine PVDF membrane. These results suggest that the novel underwatersuperoleophobic membrane can potentially be used for sustainable O/W emulsions separation, and the proposed green facile modification approach can also be applied to other water-remediation materials considering its low cost and simplicity.
研究领域:
环境工程
·
材料科学
·
水处理
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2015
·
IF 4.097
Yong Wang,Yingying Xiong,Jianying Qu,Jianhang Qu,Shufang Li
In this work, a highly sensitive and selective electrochemical sensor based on multiwalled carbon nanotubes/polydopamine/gold nanoparticles composites (MWCNTs/PDA/AuNPs) and chitosan (CS) was developed, which was used for simultaneous determination of hydroquinone (HQ) and catechol (CC) derived from a large specific area of MWCNTs and superexcellent electroconductibility of AuNPs. It was found that HQ and CC could be completely separated on the electrode using cyclic voltammetry and differential pulse voltammetry technique under optimal conditions. The proposed sensor based on MWCNTs/PDA/AuNPs exhibited linear responses for HQ and CC from 0.1 to 10 μmol L −1 with detection limits (S/N = 3) of 0.035 μmol L −1 and 0.047 μmol L −1 , respectively. In addition, the modified electrode was successfully implemented in the simultaneous determination of CC and HQ in tap and lake water samples. And compared with other methods, this sensor exhibited good sensitivity, stability and reproducibility.
研究领域:
分析化学
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环境监测
·
电化学传感
·
纳米材料
·
水污染检测
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Jing Tang,Xiaoqing Ma,Jing Liu,Shengbiao Zheng,Jianfei Wang
In this study, an electrochemical sensor for the simultaneous detection of hydroquinone (HQ) and catechol (CC) was fabricated on glassy carbon electrode (GCE) modified with graphene quantum dots (GQDs). The prepared GQDs were characterized by transmission electron microscope and fourier transform infrared spectroscopy. The GQDs/GCE, which prepared by electrodeposition method, and characterized by electrochemical impedance spectra, exhibited excellent electrochemical catalysis and conductive properties for HQ and CC. Owing to the high electroactive surface area, good electrocatalytic activity and low charge transfer resistance of GQDs, HQ and CC can be easily measured simultaneously for the large separation of oxidation peak potentials (113 mV) and do not interfere with each other. Under the optimal experimental condition, the oxidation peak currents were linear to HQ/CC in the range from 0.5 μM to 100 μM with the same low detection limits of 0.08 μM (S/N=3). Simultaneous determination of HQ and CC with such electrode was conducted in river water samples with reliable recovery between 97.90% and 103.9%.
研究领域:
分析化学
·
电化学
·
环境监测
·
传感技术
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水污染检测
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DOI
高影响因子
IONICS
·
2023
·Vol. 30
·期 2
·1089-1100
·
IF 2.8
Zhao Jifan,Lu Zhenyong,Wang Yue,Mário Baptista José Laurindo,Wang Shaoyan
Cellulose, which is one of the main components of wood biomass, was carbonized and activated by KOH to prepare a hierarchical porous carbon. This biomass derived carbon was successfully utilized as an effective sensor’s material for simultaneously determine hydroquinone (HQ) and catechol (CC) through cyclic voltammetry and amperometry techniques. The resulting sensor exhibited wide linear ranges for HQ (0.5–3000 μmol/L) and CC (1–3000 μmol/L), with the detection limits of HQ (0.47 μmol/L) and CC (0.4 μmol/L) by amperometry technique, respectively. In addition, the prepared sensor also possesses good performances including specific selectivity, long lifetime and good applicability. The practical application in domestic lake water samples with satisfied recoveries implies the proposed sensor is promising. These results demonstrate that cellulose containing biomass have potential as an effective precursor of porous carbon materials and are applicable on various electrochemical sensors.
研究领域:
电化学
·
材料科学
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环境监测
·
分析化学
·
传感器技术
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Xianmou Fan,Weikang Zhou,Yiming Chen,Liyu Yan,Yan Fang,Haiqing Liu
Tough adhesive hydrogels that can tightly bond to wet tissue/polymer/ceramic/metal surfaces have great potentials in various fields. However, conventional adhesive hydrogels usually show short-term and nonreversible adhesion ability, as the water component in a hydrogel readily transforms to vapor or ice in response to fluctuation of environment temperature, hindering their applications in extreme conditions such as in freezing Arctic and roasting Africa. For the first time, urushiol (UH), a natural catechol derivative with a long alkyl side chain, is used as a starting material to copolymerize with acrylamide for fabricating adhesive hydrogels, which contain hydrophobic/hydrophilic moieties, antifreezing agent, and adhesive catechol groups. The antifreezer/moisturizer glycerol/water binary solvent dispersed in the hydrogel endows it with antifreezing/antiheating property. The hydrophobic association and π–π interaction from UH moieties of the copolymer greatly improve its mechanical strength (tensile stress: ∼0.12 MPa with strain of ∼1100%, toughness: ∼72 kJ/m3, compression stress: ∼6.72 MPa at strain of 90%). The hydrogel can strongly adhere to various dry/wet biological/polymeric/ceramic/metallic substrates at temperatures ranging from −45 to 50 °C. Under ambient conditions, its adhesion force to porcine skin, glass, and tinplate may reach up to 160, 425, and 275 N/m, respectively. Even stored at −45 or 50 °C for 30 d, the hydrogel still maintains good flexibility and robust adhesion force. It also shows repeatable underwater adhesion to biological tissue, glass, ceramic, plastic, and rubber. This novel antifreezing/antiheating adhesive hydrogel may be applied in extremely cold or hot environments and in underwater conditions.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
ANALYST
·
2026
·
IF 3.6
Dexian Kong,Jiajin Feng,Shiting Deng,Mingwei Yang,Yuwu Chi
A new electropolymerized methimazole (p-MMI) film-modified glassy carbon electrode was developed for simultaneous detection of hydroquinone (HQ) and catechol (CC). The p-MMI/GCE was fabricated through cyclic voltammetric deposition of methimazole, a sulfur-containing heterocyclic monomer, which formed a catalytically active interface. Electrochemical characterization revealed that the p-MMI film dramatically enhanced electron transfer kinetics: the oxidation peak currents of HQ and CC increased by 4.8-and 5.3-fold compared to bare GCE, respectively, meanwhile achieving a remarkable peak potential separation of 103 mV . Differential pulse voltammetry demonstrated dual linear responses for both isomers across 1.0 -800 μmol L -1 , with detection limits of 0.6 μM (HQ) and 0.2 μM (CC) (S/N=3). The sensor exhibited exceptional anti-interference capability against common coexisting species (e.g., ascorbic acid, Na + /K + ions) and maintained 95.2% initial response after 50 cycles. Practical applicability was validated through river water analyses, yielding recoveries of 86.4 -107.6% with RSD <4.3% (n=5).Mechanistic studies suggested that the synergistic effects of methimazole's thiol groups (enhancing analyte adsorption) and conjugated imidazole rings (facilitating charge transfer) underpinned the superior performance. This work not only establishes p-MMI as a cost-effective sensing material but also provides a paradigm for transforming simple organic molecules into high-performance electrochemical interfaces through rational electropolymerization strategies.
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产品关联
DOI
高影响因子
Colloid and Interface Science Communications
·
2025
·
IF 4.7
Jiaojiao Lv,Chong Zhang,Yang Yang,Xinting Dong,Dongming Qi,Jindan Wu
Ultra-high molecular weight polyethylene (UHMWPE), a promising material for high-strength sutures in bone repair, faces challenges due to its inert surface, limiting its biomedical applications. A one-pot approach was developed to apply a catechol (CA)/tobramycin (Tob)/poly(sulfobetaine methacrylate) (pSBMA) composite coating onto suture surfaces. During the redox reaction between Tob and CA, hydroxyl radicals were generated, initiating the polymerization of SBMA.The resulting coating not only reduces the surface roughness but also maintains sufficient mechanical strength of the fibers to withstand tissue tension during usage. Furthermore, the sutures exhibited good bactericidal and anti-bacteria adhesion properties, effectively preventing bacterial approaching and adhering, thereby reducing the infection rate at the surgical site. Additionally, the sutures demonstrated excellent biocompatibility and hemocompatibility. In conclusion, the modified UHMWPE fibers hold significant potential for application in orthopedic tissue repair. Moreover, this facile method for fabricating multifunctional coatings may provide new impetus for the development of biomedical materials.
研究领域:
生物材料
·
医学工程
·
表面化学
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产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Shuojiang Liu,Gongke Li,Yuling Hu
The integration of surface-enhanced Raman scattering (SERS) and nanozymes has proven to be a highly effective strategy in bioanalytical applications, owing to its superior capabilities in signal transduction and amplification. Nevertheless, clinical applications still face obstacles, particularly in achieving sufficient selectivity. In this work, we have presented a SERS strategy for the selective detection of dopamine in human urine with MOF-818 which exhibits selective catechol oxidase-like activities. AgNPs@MOF-818 catalyze the oxidation of o -phenylenediamine (OPD) to diaminobenzazine (DAP) molecules, when dopamine (DA) is present, the oxidation of OPD is inhibited while DA is catalyzed into o -quinones, thereby suppressing the SERS signal intensity. An indirect SERS detection strategy of dopamine with high sensitivity and selectivity was established. The catechol oxidase-like activity of MOF-818 provides ideal selectivity to dopamine, while the OPD-dopamine catalytic system induces significant changes in SERS intensity. The detection protocol was subsequently optimized to achieve high sensitivity for dopamine, yielding a linear response range of 0.1–30 μmol/L and a low limit of detection (LOD) of 0.04 μmol/L. The method was successfully applied to the quantitative analysis of dopamine in human urine samples, demonstrating excellent recovery rates and minimal relative error in comparison with results obtained by commercial dopamine ELISA kit. This strategy presents a cost-effective, efficient, and accurate approach for dopamine detection while delivering insights into the integration of selective multifunctional nanozymes with sensitive SERS technique.
研究领域:
生物分析化学
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纳米医学
·
临床检验
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分子诊断
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转化医学
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产品关联
DOI
PubMed
高影响因子
Sustainable Energy & Fuels
·
2024
·
IF 5
Yuting Wu,Keru Cao,Jun Yan,Yuheng Zhang,Biao Zhang,Yanan Wang,Yong Yang,Dacheng Zhou,Qi Wang,ChunXia Liu
Electrochemical detection techniques are unable to accurately distinguish isomers with similar structures and properties due to the poor stability and selectivity of some sensors and their susceptibility to environmental interference. Bimetallic synergistically synthesized MOF materials have various types of highly ordered pores and can be used as adsorbent materials and catalyst carriers. Therefore, a composite material was developed to prepare its derivative Cu/Bi@C using a bimetallic organic skeleton (Cu/Bi-MOF) as a precursor, inheriting the large number of active sites on the surface of the MOF and large surface area, while improving the electrochemical response signal. The morphology and structure of the synthesized Cu/Bi@C composites were tested and analyzed by XRD, SEM and other characterization methods, and the electrochemical response of the Cu/Bi@C nanocomposites was analyzed by using an electrochemical workstation. In this study, a simple and highly selective electrochemical method was developed for the simultaneous determination of catechol and catechol quinone. Differential pulse voltammetry (DPV) was used for the simultaneous detection of HQ and CC. The results showed that the Cu/Bi@C electrode was able to efficiently and highly selectively detect both isomers. The Cu/Bi@C electrode could detect HQ and CC in the range of 2–600 μM and 2–800 μM, respectively, under the detection environment of pH = 6.0. The detection limits were 0.08 μM and 0.11 μM (S/N = 3), respectively. The sensor was successfully applied to real samples and showed low detection limits, good recoveries, high selectivity, stability and reproducibility. This provides a new idea for electrochemical detection and is expected to be applied in several fields.
研究领域:
分析化学
·
材料科学
·
环境科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Fan Yang,Yunlu Chen,Wentao Zhang,Shaochun Gu,Zhenjie Liu,Maohu Chen,Leidan Chen,Feng Chen,Huicong Zhang,Yude Ding,Yanshan Liu,Jinyi Chen,Linhong Wang
Hyaluronic acid-based hydrogels have been broadly used in medical applications due to their remarkable properties such as biocompatibility, biodegradability, super hydroscopicity, non-immunogenic effect, etc. However, the inherent weak and hydrophilic polysaccharide structure of pure hyaluronic acid (HA) hydrogels has limited their potential use in muco-adhesiveness, wound dressing, and 3D printing. In this research, we developed in-situ forming of catechol-modified HA hydrogels with improved mechanical properties involving blue-light curing crosslinking reaction. The effect of catechol structure on the physicochemical properties of HA hydrogels was evaluated by varying the content (0–40 %). The as-synthesized hydrogel demonstrated rapid prototyping, excellent wetting adhesiveness, and good biocompatibility. Furthermore, an optimized hydrogel precursor solution was used as a blue light-cured bio-ink with high efficiency and good precision and successfully prototyped a microstructure that mimicked the human hepatic lobule by using DLP 3D printing method. This catechol-modified HA hydrogel with tunable physicochemical and rapid prototyping properties has excellent potential in biomedical engineering.
研究领域:
生物医学工程
·
材料科学
·
组织工程
·
药物递送
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Jiading Wang,Ruikun Wang,Shengqiang Nie,Shaoyun Guo,Xianlong Zhang
Debonding of the dielectric adhesive material will make the high-frequency communication equipment unusable, leading to resource wasting and electronic waste. Reversible adhesive is an ideal strategy to realize the reuse of debonding devices, but the low dielectric loss requirement of the dielectric adhesive materials in high-frequency devices limits its development. Here, the surface anchoring design of catechol was proposed to prepare a reversible adhesive film with ultralow dielectric loss in high frequency. The catechol structure was linked to the end of polybutadiene (PB) macromolecule to synthesize catechol-terminated PB (PB-D). The PB-based adhesive film (PB-F) with ultralow dielectric loss was used as the base film, and then PB-D was sprayed on PB-F to form a thin layer. In the subsequent curing process, the catechol group on the surface of PB-F could be anchored by the cross-linking reaction between the heterogeneous PB segments. The surface modification transforms the interface debonding between PB-F and copper foil into cohesive failure within the PB-D layer, showing a strong adhesion of more than 1.1 N/mm. More importantly, relying on the reversible hydrogen bonding of catechol structures, the debonding material can regain stable bonding in a mild way. Because the catechol group is only distributed on the film surface, the reversible adhesive film kept an ultralow dielectric loss (Df = 2.5–2.9 × 10–3) at 10 GHz. In this work, an ultralow dielectric loss and reversible adhesive film with commercial prospects was prepared for the first time, which is expected to be used for simple recovery of communication substrate bonding failure.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
PubMed
高影响因子
POLYMER
·
2024
·
IF 4.1
Pengfei Chen,Yinyu Zhang,Ping Zhang,Xiuli Zhao,Yeping Wu
High-performance thermoplastics , such as polyether ether ketone (PEEK) and polyester sulfone (PES), are extensively utilized across various industries owing to their exceptional properties. However, their relatively low surface energy often leads to insufficient bonding strength when adhering PEEK or PES. Commonly used surface pretreatments, such as acid-base and plasma treatments, have drawbacks including the use of toxic acids and bases, complex procedures, and poor stability. In this study, we synthesized four catechol-functionalized prepolymers by reacting bisquinone A with dithiols or diamines in a 1:1 M ratio. These catechol-containing prepolymers were employed as surface primers, and the adhesion performance before and after primer treatment was examined using epoxy adhesive for bonding tests. Compared to untreated samples, the lap shear strengths of surface primed PEEK and PES were significantly enhanced by 181 % and 114 %, respectively. These results indicate that the synthesized prepolymers with catechol structures can effectively serve as adhesive primers for bonding.
研究领域:
材料科学
·
生物仿生学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）