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2023 1

2022 2

2021 1

2015 1

2012 1

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乳液 2

胶体 2

分子间力和表面力 1

分子间和表面间相互作用 1

原子力显微镜 1

工程过程 1

水处理 1

界面 1

界面科学 1

结垢和防污 1

表面力仪 1

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Gold modified microelectrode for direct tetracycline detection

Hongtao WANG, Huimin ZHAO, Xie QUAN

《环境科学与工程前沿（英文）》 2012年第6卷第3期页码 313-319 doi: 10.1007/s11783-011-0323-5

摘要： The residues of tetracycline antibiotics in water have attracted many concerns due to their harmful impact to human health. This paper reports an electrochemical sensor for the determination of tetracycline (TC) by the microelectrode, which was fabricated by electrodeposited gold colloids on tungsten tip. Cyclic voltammerty was used to study the electrochemical behavior of TC on the microelectrode. Well anodic wave was obtained at about 1.5 V in acidic solutions. Electrochemical determination of tetracycline was investigated using microelectrode by cyclic voltammetry. Under optimized conditions, the calibration curves for TC were obtained. The oxidation peak currents were linearly related to TC concentrations in the range of 1–10 mg·L and 10–100 mg·L , respectively. The detection limit was 0.09 mg·L ( / = 3).

关键词： microelectrode tungsten tip gold colloids tetracycline

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A CFD study of the transport and fate of airborne droplets in a ventilated office: The role of droplet−droplet interactions

《环境科学与工程前沿（英文）》 2022年第16卷第3期 doi: 10.1007/s11783-021-1465-8

摘要：

• Coulomb and Lennard−Jones forces were considered for droplet interactions.

关键词： Droplet interactions Aerosols Colloids CFD Transport Fate

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Influence of surface modified mixed metal oxide nanoparticles on the electrochemical and mechanical properties of polyurethane matrix

《化学科学与工程前沿（英文）》 2023年第17卷第1期页码 1-14 doi: 10.1007/s11705-022-2176-9

摘要： Newly synthesized functional nanoparticles, 3-amino-1,2,4-triazole (ATA)/SiO₂–TiO₂ were introduced to the polyurethane (PU) matrix. Electrochemical techniques were used to investigate the barrier properties of the synthesized PU–ATA/SiO₂–TiO₂ nanocomposite coated steel specimen. In natural seawater, electrochemical impedance spectroscopy experiments indicated outstanding protective behaviour for the PU–ATA/SiO₂–TiO₂ coated steel. The coating resistance (R_coat) of PU–ATA/SiO₂–TiO₂ was determined to be 2956.90 kΩ·cm^–2. The R_coat of the PU–ATA/SiO₂–TiO₂ nanocomposite coating was found to be over 50% higher than the PU coating. The current measured along the scratched surface of the PU–ATA/SiO₂–TiO₂ coating was found to be very low (1.65 nA). The enhanced ATA/SiO₂–TiO₂ nanoparticles inhibited the entry of electrolytes into the coating interface, as revealed by scanning electron microscopy/energy dispersive X-ray spectroscopy and X-ray diffraction analysis of the degradation products. Water contact angle testing validated the hydrophobic nature of the PU–ATA/SiO₂–TiO₂ coating (θ = 115.4°). When the concentration of ATA/SiO₂−TiO₂ nanoparticles was 2 wt %, dynamic mechanical analysis revealed better mechanical properties. Therefore, the newly synthesised PU–ATA/SiO₂–TiO₂ nanocomposite provided excellent barrier and mechanical properties due to the addition of ATA/SiO₂–TiO₂ nanoparticles to the polyurethane, which inhibited material degradation and aided in the prolongation of the coated steel’s life.

关键词： SiO₂/TiO₂ nanoparticle nanocomposite coatings dynamic mechanical analysis electrochemical techniques corrosion colloids and interfaces

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Effects of humic acid and surfactants on the aggregation kinetics of manganese dioxide colloids

Xiaoliu HUANGFU,Yaan WANG,Yongze LIU,Xixin LU,Xiang ZHANG,Haijun CHENG,Jin JIANG,Jun MA

《环境科学与工程前沿（英文）》 2015年第9卷第1期页码 105-111 doi: 10.1007/s11783-014-0726-1

摘要： The aggregation of common manganese dioxide (MnO ) colloids has great impact on their surface reactivity and therefore on their fates as well as associated natural and synthetic contaminants in engineered (e.g. water treatment) and natural aquatic environments. Nevertheless, little is known about the aggregation kinetics of MnO colloids and the effect of humic acid (HA) and surfactants on these. In this study, the early stage aggregation kinetics of MnO nanoparticles in NaNO and Ca(NO ) solutions in the presence of HA and surfactants (i.e., sodium dodecyl sulfate (SDS), and polyvinylpyrrolidone (PVP)) were modeled through time-resolved dynamic light scattering. In the presence of HA, MnO colloids were significantly stabilized with a critical coagulation concentration (CCC) of ~300 mmol·L NaNO and 4 mmol·L Ca(NO ) . Electrophoretic mobility (EPM) measurements confirmed that steric hindrance may be primarily responsible for increasing colloidal stability in the presence of HA. Moreover, the molecular and/or chemical properties of HA might impact its stabilizing efficiency. In the case of PVP, only a slight increase of aggregation kinetics was observed, due to steric reactions originating from adsorbed layers of PVP on the MnO surface. Consequently, higher CCC values were obtained in the presence of PVP. However, there was a negligible reduction in MnO colloidal stability in the presence of 20 mg·L SDS.

关键词： humic acid surfactant aggregation kinetics drinking water manganese dioxide colloids

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工程过程中分子间和表面间相互作用 Review

张嘉文, 曾宏波

《工程（英文）》 2021年第7卷第1期页码 63-83 doi: 10.1016/j.eng.2020.08.017

摘要：

在复杂流体中，化学试剂、固体颗粒、气泡、液滴和固体表面间的相互作用在许多工程过程中起着至关重要的作用，如泡沫浮选、乳液和泡沫形成、吸附、污垢、防污现象等。这些在分子、纳米和微观尺度上的相互作用显著地影响并决定了相关工程过程的宏观性能和效率。理解工程过程中的分子间和表面间相互作用具有基础和实际意义，这不仅改善了生产技术，而且为新材料的开发提供了有价值的见解。本文首先介绍了各种工程过程中涉及的典型分子间和表面间相互作用，包括Derjaguin-Landau-Verwey-Overbeek（DLVO）相互作用（即范德华相互作用和双电层相互作用）和非DLVO相互作用（如空间位阻和疏水相互作用）。本文简要介绍了用于测量复杂流体中分子间和表面间相互作用力的原子力显微镜和表面力仪等纳米力学技术；综述了近年来我们对矿物浮选、石油工程、废水处理、储能材料这些工程体系中分子间和表面间相互作用的研究进展；讨论了这些基本相互作用机制与解决工程挑战中的实际应用之间的相关性，并对未来的研究领域进行前景展望。

关键词：分子间和表面间相互作用胶体乳液界面科学工程过程原子力显微镜表面力仪

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石油生产过程中界面力和表面相互作用机制探究 Review

杨笛灵, 彭旭雯, 彭琼瑶, 王涛, 乔辰宇, 赵子谦, 龚露, 刘月亮, 张豪, 曾宏波

《工程（英文）》 2022年第18卷第11期页码 49-61 doi: 10.1016/j.eng.2022.06.012

摘要：

尽管可再生能源的探索在过去十年取得了进展，但原油或石油仍然是世界上最重要的能源资源之一。石油生产涉及许多具有挑战性的问题，如复杂的油水乳状液不稳定、管道和其他设施上的结垢现象，以及水处理。这些问题受到相关过程中涉及的油/水/固/气界面的分子力的影响。本文概述了通过应用表面力仪器（SFA）和原子力显微镜（AFM）等纳米力学测量技术探测几个石油生产过程（如沥青提取、乳液稳定和不稳定、结垢和防污现象以及水处理）中的界面力的最新进展。沥青与周围流体介质中的矿物固体或气泡之间的相互作用力决定了油砂生产中沥青的释放和浮选效率。复杂的油/水乳状液的稳定性受乳状液滴之间，特别是界面活性物种（如沥青质）之间作用力的制约。各种石油成分（如沥青质）和乳状液滴与不同的基质表面（如管道或膜）相互作用，影响结垢现象、油水分离和废水处理。对这些分子间和界面力的量化推进了对这些界面相互作用机理的理解，促进了先进材料和技术的发展，从而解决了相关的挑战性问题并改善了石油生产过程。此外，本文还介绍了该领域尚未解决的挑战和对未来研究方向的建议。

关键词：分子间力和表面力界面乳液胶体结垢和防污水处理