International Journal of Electrochemical Science
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2023
·Vol. 11
·期 8
·6466-6476
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IF 1.5
Changling Yan,Jin Li,Tingting Meng,Xun Liu,Ruixing Zhang,Yujuan Chen,Gongke Wang
A simple and reliable method was proposed for rapid detecting ciprofloxacin, based on molecularly imprinted technology. The molecularly imprinted ciprofloxacin hydrochloride (CPX) sensor was prepared by electropolymerization of pyrrole (Py) and o-phenylenediamine (o-PD) on the pencil graphite electrode (PGE). The performance of the sensor was characterized by square wave voltammetry (SWV) using potassium ferricyanide as molecular probe. Under optimal conditions, the sensor displayed high selectivity and stability towards CPX. A linear relationship between the change in current (Δi) and the logarithm of CPX concentrations from 1×10 −9 to 1×10 −3 mol/L was obtained with a detection limit of 7.58×10 −11 mol/L (S/N=3). Furthermore, the MIP sensor was applied for the analysis of real tablet samples with high accuracies.
研究领域:
分析化学
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药物分析
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电化学传感
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分子印迹技术
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药物残留检测
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2012
·Vol. 378
·期 1
·30-35
·
IF 3.07
Shangkun Li,Xiaofeng Lu,Xiang Li,Yanpeng Xue,Chengcheng Zhang,Junyu Lei,Ce Wang
A reactive-template vapor phase polymerization method for the preparation of bamboo-like polypyrrole (PPy) nanotubes has been successfully demonstrated in this paper. Herein, electrospun V 2 O 5 nanofibers were chosen as templates to deposit PPy, which served as the oxidants as well. This method can provide the fabrication of PPy nanostructures more easily than conventional routes due to its independence of removing template, which is usually a complex and tedious experimental process. The application of bamboo-like PPy nanotubes for Cr(VI) ions removal in aqueous solution has been explored. The resulting bamboo-like PPy nanotubes exhibited much higher adsorption performance than traditional PPy nanoparticles.
研究领域:
环境科学
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纳米材料
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高分子化学
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环境污染治理
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吸附技术
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CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Yongsheng Ni,Wanmei Lin,Ruojun Mu,Chunhua Wu,Zheya Lin,Su Chen,Jie Pang
The exploration of methods to produce biomaterials with antibacterial properties in ultra-small scales is of great scientific and technological interest. Here, we reported a microfluidic spinning approach to prepare a novel film combined with konjac glucomannan (KGM), polyvinylpyrrolidone (PVP), and epigallocatechin gallate (EGCG). The film was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis. This film was transparent, orderly, thermally stable, and uniform in size, with an average width less than 1 μm. Also, the film exhibited excellent antibacterial efficiency (97.1% against E. coli , 99.7% against S. aureus , 97.3% against S. enterica and 99.9% against B. subtilis ) in our antibacterial test. In addition, the film promoted wound healing with the advanced development of neovascularization and hair follicles. This strategy provides a facile and green pathway for the construction of biomaterial films for medical applications.
研究领域:
生物材料学
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医学工程
·
微生物学
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PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Haihua Wang,Wenjing Zhang,Yongning Ma,Guiqiang Fei,Huan Wen,Liyu Sun,Yanming Shao,Yong-Mook Kang
The compatibility between polypyrrole (PPy) and waterborne epoxy coating (EP) remains the main challenge. Here, phosphorylated poly (vinyl alcohol) (PPVA) and p-toluene sulfonic acid sodium (p-TSA) were simultaneously utilized as dopants to modify PPy and prepare water dispersible PPVA/p-TSA/PPy (PPVAT/PPy) solution. Additionally, poly (vinyl alcohol) (PVA) and TSA were also adopted to prepare PVA/p-TSA/PPy (PVAT/PPy) for comparison. Denser film with granular morphology was observed for PPVAT/PPy nanocomposite film. Compared with PVAT/PPy-40 %, the tensile strength of PPVAT-8.0 %/PPy-40 % increased from 248.8–283.9 MPa. PPVAT/PPy displayed higher compatibility and interactions with EP compared to PPy-TSA and PVAT/PPy. Compared with EP, the impedance modulus of PVAT/PPy+EP and PPVAT/PPy+EP increased from 3.17×10 5 to 1.07×10 8 and 1.62×10 9 Ω·cm 2 ; corrosion current density I corr decreased from 1.49×10 −6 to 7.72×10 -8 and 4.01×10 -9 A·cm -2 ; corrosion potential E corr displayed a positive shift of 230 mV and 269 mV, respectively. The corrosion inhibition efficiency of PPVAT/PPy+EP reached 99.83 %, which is much higher than that of PVAT/PPy+EP (93.97 %). PPVAT/PPy+EP nanocomposite coating has been proved to have preferable long-term corrosion resistance based on electrochemical impedance spectra (EIS), polarization curves and salt water spray test. The simultaneous incorporation of phosphate anions, sulfate ions and PPy into EP was beneficial to fabricate high-performance anticorrosion coating.
研究领域:
材料科学
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高分子化学
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腐蚀防护
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纳米复合材料
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表面工程
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Plasma Processes and Polymers
·
2011
·Vol. 8
·期 10
·923-931
·
IF 1.643
Zhihong Zhang,Jun Dou,Fufeng Yan,Xianjun Zheng,Xili Li,Shaoming Fang
The present work describes the fabrication, characterization, and optimization of plasma polymerized pyrrole films, PPpy, prepared by continuous wave for application as the adhesion layers of bovine serum albumin (BSA). Plasma conditions used throughout the work produced significant differences in the chemical, physical, and electrochemical properties of the resultant PPpy films. Structural analysis and property characterizations of PPpy were carried out using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and electrochemical workstation. Surface plasmon resonance spectroscopy was used to investigate the adsorption kinetics of BSA onto PPpy films. Moreover, when immersed in solutions or after BSA adsorption, the differences of electron transfer at the interfaces between the PPpy and the electrolyte solutions were determined by electro impedance spectroscopy. While there is a clear dependence of the protein adsorption affinity on the plasma polymerization condition employed during the film preparation. The relationship between film structure, electrochemical properties, polymer stability in aqueous buffer, and protein binding affinities are discussed.
研究领域:
生物材料
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表面科学
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生物医学工程
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分子生物学
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分析化学
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生物传感器
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OPTICAL MATERIALS
·
2022
·
IF 3.754
Ziang Xie,Ping Wu,Sen Chen,Shiping Zhang,Yili Pei,Li Li,Guodong Fu,Ying Xie,Haochen Guan,Yun Xing,Jianzhang Zhu,Xinran Wang
The power conversion efficiency (PCE) of tin-based perovskite solar cells (TPSCs) was significantly improved when polyvinyl pyrrolidone (PVP) was doped into the formamidinium tin iodide (FASnI 3 ) layer with an optimized doping mass. After doping, the FASnI 3 grain size, film smoothness and average carrier lifetime were largely enhanced, which demonstrate the crystallization quality improvement to FASnI 3 . The champion PCE of the enhanced TPSC was improved to 7.83%, which is relatively 27% larger than that of the control, 6.15%. After continuous storage for 15 days, the PCE of the enhanced TPSC remained 74.4% of its original value. Using the finite difference time domain (FDTD) simulation method, we demonstrated that the light absorption ratio of the FASnI 3 :PVP layer was larger than that of the FASnI 3 , and the photo-generated carrier density of the enhanced TPSC was approximately 2% ∼ 3% larger than that of the control. The ultimate efficiency of the enhanced TPSC was calculated to be 26.23%. It is potential to dope PVP into FASnI 3 to further enhance the device performance of TPSCs.
研究领域:
材料科学
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光伏技术
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纳米科技
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表面化学
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半导体器件
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Shumin Lin,Shuang Luo,Huiying Yan,Zhouqishuo Cai,Yanan Zhao,Jinmeng Zhang,Hua Bai
Flexible planar supercapacitors have garnered significant attention as potential power supplies for wearable and portable devices. In this work, we present a flexible planar supercapacitor utilizing delignified natural wood as the substrate and polypyrrole as the electrode material. The interdigitated polypyrrole electrodes are fabricated on the substrate via vapor deposition polymerization, with the polypyrrole thoroughly embedded within the wood substrate’s channels across its thickness. This design significantly enhances the areal-specific capacitance and stability of the device. The electrodes achieve an impressive areal-specific capacitance of 1903.0 mF cm–2, while the planar-integrated supercapacitor constructed with these electrodes exhibits an areal-specific capacitance of 172.0 mF cm–2. Benefiting from the excellent flexibility of delignified wood, three-dimensional distribution, and strong binding to the substrate of polypyrrole, the planar supercapacitor demonstrates outstanding flexibility and mechanical stability. This study demonstrates an innovative approach to utilizing porous insulating substrates for fabricating planar supercapacitors and highlights possibilities for incorporating eco-friendly wood into energy storage applications.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Quan Yuan,Yiran Hu,Qin Zhu,Chunmei Wang,Xiaomin Dou,Jun Liu
Water resource shortage and water pollution are global challenges. Simultaneously obtaining clean water and mitigating pollutants from harsh water sources are continuously pursued in research community and industry sector. In this work, a TiO 2 /g-C 3 N 4 /PPy@MS (TGP@MS) composite was fabricated to harvest water and mitigate tylosin from wastewater concurrently through a coupled process of solar-driven evaporation and photocatalysis. The composite presents exceptional hydrophilicity, broad-spectrum light absorption, and superior catalytic activity. Incorporating polysized phenylamine onto TiO 2 /g-C 3 N 4 enhanced infrared light absorption, extending the light absorption across the full solar spectrum range of 300–1200 nm and ultimately achieving an absorption rate of 91.6 % within this range. The 3D porous structure and the hydrophilic nature of the hydrogel sponge facilitated the capillary-driven water transport to surfaces. Under one sun condition, an evaporation rate of 1.49 kg/(m 2 ·h) and a photothermal conversion efficiency of 89.4 % were achieved for TGP@MS. Active species including ·OH and 1 O 2 were generated from the TiO 2 /g-C 3 N 4 components, degrading 90 % of tylosin within 150 min. Due to the versatile purification capabilities, TGP@MS could treat a wide range of water samples, enabling simultaneous water recovery and pollutant removal. Therefore, this work demonstrates significant potential in addressing the water crisis in underdeveloped areas. It achieves this by simultaneously producing clean water and mitigating pollutants from low-quality water sources, using green and sustainable solar energy.
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PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Xiangjun Li,Yuxin Shi,Miaomiao Li,Shengwei Deng,Yinxia Dong,Libo Tong,Zhongze Du,Kuaishe Wang
The exceptional protection of epoxy resin (EP) is restricted in practical applications due to high electrical insulation and inherent microporous defects. In this study, acid-doped polypyrrole (f-PPy)/MXene hybrid nanomaterials incorporated into the EP matrix to construct three-dimensional (3D) conductive network that simultaneously enhances corrosion resistance and imparts antistatic capability. Electrochemical impedance measurements demonstrate a long-term stability, maintaining 9.73 × 10 10 Ω cm 2 even after 14 days of immersion, which is significantly higher than the EP coatings. Compared with pure EP, the composite SiO 2 @f-PPy/MXene/EP coating shows a 3 times reduction in surface resistivity (8.68 × 10 7 Ω m) and exceeds the industrial antistatic threshold by two orders of magnitude. The enhanced anticorrosion is attributed to the synergistic contribution of the triple properties of the SiO 2 @f-PPy/MXene: “labyrinth effect”, redox effect and corrosion inhibition. SiO 2 @f-PPy/MXene 3D conductive network enhances the antistatic ability of EP. This dual-functional strategy addresses the critical gap of combining anticorrosion and antistatic performance in EP coatings and offers a practical route for protective applications on Mg alloys.
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DESALINATION
·
2025
·
IF 9.8
Luyang Hu,Junjie Liao,Haoran Wang,Xiaonan Wu,Zhe Yang,Yumin Zhang
Solar-driven interfacial evaporation offers a promising pathway for seawater desalination and wastewater treatment. However, the practical implementation of advanced evaporators faces challenges in heat localization and water transport. Here, we report a leaf-inspired membrane (LIM) that integrates hierarchical structural design with multifunctional materials engineering to enable high-efficiency solar evaporation. The LIM adopts a Janus architecture and mimics the vein networks and porous microstructure of natural leaves. This design presents 94.9 % solar absorption and reduces water evaporation enthalpy by 42.4 %. Under a unidirectional flow and suspension mode, the evaporator achieves an evaporation rate of 2.86 kg m −2 h −1 for pure water and 2.48 kg m −2 h −1 for 20 wt% brine under 1-sun irradiation. Shaping the membrane into a 3D sinusoidal configuration and introducing bidirectional fluid transport enhances thermal energy recycling, boosting the rate of pure water to 3.10 kg m −2 h −1 . The asymmetric Janus structure spatially separates the processes of evaporation and salt crystallization, enabling continuous freshwater production alongside salt recovery—thus supporting zero liquid discharge. Outdoor field trial confirms that the 3D-structured evaporator operates reliably under natural sunlight (0.35–0.82 kW m −2 ), yielding 13.91 kg m −2 of water vapor and 0.48 kg m −2 of salt over an 8-hour period, while reducing ion concentrations by 3–4 orders of magnitude. Beyond desalination, the LIM also demonstrates versatile purification capabilities for diverse wastewater, including dye-laden effluents, emulsions, suspensions, and corrosive solutions. This biomimetic design bridges material engineering with fluidic control, offering a scalable strategy for sustainable water-energy solutions.
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FUEL
·
2025
·
IF 7.5
Yuanyuan Cui,Gang Fu,Jiaxing Wen,Li Yang,Jiaxu Zhang,Jianmin Sun
The direct synthesis of cyclic carbonates from olefins involves a tandem process of olefin epoxidation and CO 2 cycloaddition, but designing a single catalyst with multiple active sites remains a challenge. In this work, a series of dual ligands quaternized Zr-based MOFs (Zr-Bpydc(Py + Br − )/CoTCPP-x, x = 1–5) were successfully synthesized by co-assembling 2,2′-bipyridine-5,5′-dicarboxylic acid (Bpydc) and cobalt(II) 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (CoTCPP) with Zr 6 clusters, followed by post-synthetic quaternization to incorporate nucleophilic Br − sites. Among them, Zr-Bpydc(Py + Br − )/CoTCPP-4 exhibited the best catalytic performance under mild reaction conditions (80 °C, 1.0 MPa, 12 h), achieving styrene conversion of 94.2 % and styrene carbonate (SC) selectivity of 66.5 %, significantly outperforming most previously reported heterogeneous catalytic systems under cocatalyst-free conditions. The excellent catalytic activity was attributed to the synergistic effect among redox-active Co 2+ sites, Lewis acidic Zr 4+ and Co 2+ sites, Br − sites, and basic pyridyl sites. Importantly, the catalyst also demonstrated broad substrate applicability and good recyclability, with negligible activity loss over five consecutive cycles. Furthermore, density functional theory (DFT) calculations elucidated the energy profile and reaction pathway of the styrene oxidative carboxylation reaction, revealing the cooperative roles of multiple active sites in both epoxidation and CO 2 cycloaddition reactions. Therefore, this work proposes a strategy based on the synergy of multiple active sites for developing efficient and recyclable heterogeneous MOF catalysts for CO 2 conversion.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xueke Jiao,Shuangqing Li,Lili Chai,Yafei Zhao,Bing Zhang
The practical application of organic phase change materials (PCMs) like polyethylene glycol (PEG) is limited by leakage, low thermal conductivity, and lack of active energy-harvesting capability. To address these challenges, a multifunctional composite PCM (PEG@HCS-85) was fabricated through a stepwise strategy. PEG was first encapsulated within a conductive, honeycomb-like carbonized sugarcane (CS) skeleton, followed by coating with a halloysite nanotube (HNT)/polyvinyl alcohol (PVA)/polypyrrole (PPy) film via rapid freezing. The CS framework provides shape stability, enhances thermal conductivity (0.483 W m −1 K −1 ), and enables efficient electro-thermal conversion via Joule heating. The HNT/PVA/PPy coating ensures excellent leakage resistance (100 wt% retention after heating at 100 °C) and boosts broadband solar absorption (98.0% average absorbance), leading to a high photothermal conversion efficiency of 96.48%. Moreover, when integrated with a thermoelectric generator (TEG), PEG@HCS-85 serves as a thermal buffer that stabilizes the temperature gradient, enabling sustained power generation even after illumination ceases (maximum power density 33.9 W m −2 under 3 kW m −2 with water cooling). The composite also exhibits good thermal cycling stability after 1000 cycles. This work demonstrates a rational design of a biomass-based, multifunctional PCM that combines efficient thermal storage with active multifunctional energy conversion, offering promising potential for solar thermal management, waste heat recovery, and round-the-clock renewable energy utilization.
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危险品化学品经营许可证（带存储）