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superhydrophobic surface-Assisted Preparation of Microspheres and Supraparticles and Their Applications

Nano-Micro Letters 2024年第4期16卷 110-138页

作者： Mengyao Pan Huijuan Shao Yue Fan Jinlong Yang Jiaxin Liu Zhongqian Deng Zhenda Liu Zhidi Chen Jun Zhang Kangfeng Yi Yucai Su Dehui Wang Xu Deng Fei Deng Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110People’s Republic of China Pharmaceutical Glass Co.Ltd Zibo 256100People’s Republic of China Department of Nephropathy School of MedicineSichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduPeople’s Republic of China Department of Nephrology Sichuan Provincial People’s Hospital Jinniu HospitalChengdu Jinniu District People’s HospitalChengduPeople’s Republic of China

superhydrophobic surface(SHS) has been well developed, as SHS renders the property of minimizing the water/solid contact interface. Water droplets deposited onto SHS with contact angles exceeding 150°, allow them to retain spherical shapes, and the low adhesion of SHS facilitates easy droplet collection when tilting the substrate. These characteristics make SHS suitable for a wide range of applications. One particularly promising application is the fabrication of microsphere and supraparticle materials. SHS offers a distinct advantage as a universal platform capable of providing customized services for a variety of microspheres and supraparticles. In this review, an overview of the strategies for fabricating microspheres and supraparticles with the aid of SHS, including cross-linking process, polymer melting,and droplet template evaporation methods, is first presented. Then, the applications of microspheres and supraparticles formed onto SHS are discussed in detail, for example, fabricating photonic devices with controllable structures and tunable structural colors, acting as catalysts with emerging or synergetic properties, being integrated into the biomedical field to construct the devices with different medicinal purposes, being utilized for inducing protein crystallization and detecting trace amounts of analytes. Finally,the perspective on future developments involved with this research field is given, along with some obstacles and opportunities.

关键词： superhydrophobic surface Microspheres and supraparticles Photonic devices Catalysts Biomedical and trace detections

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Recent advances in preparation of metallic superhydrophobic surface by chemical etching and its applications

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Chinese Journal of Chemical Engineering 2023年第9期61卷 221-236页

作者： Shitong Zhu Wenyi Deng Yaxin Su College of Environmental Science and Engineering Donghua UniversityShanghai 201620China

In the past few decades,inspired by the superhydrophobic surfaces(SHPS)of animals and plants such as lotus leaves,rose petals,legs of water striders,and wings of butterflies,preparing metal materials with metallic SHPS(MSHPS)have attracted great research interest,due to the great prospect in practical *** obtain SHPS on conventional metal materials,it is necessary to construct rough surface,followed by modification with low surface energy *** this paper,the action mechanism and the current research status of MSHPS were reviewed through the following ***,the model of wetting theory was presented,and then the progress in MSHPS preparation through chemical etching method was ***,the applications of MSHPS in self-cleaning,anti-icing,corrosion resistance,drag reduction,oil-water separation,and other aspects were ***,the challenges encountered in the present application of MSHPS were summarized,and the future research interests were discussed.

关键词： Metal superhydrophobic surface Chemical etching Low adhesion Self-cleaning

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Flexible Broadband Light Absorbers with a superhydrophobic surface Fabricated by Ultraviolet-assisted Nanoimprint Lithography

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Chemical Research in Chinese Universities 2022年第3期38卷 829-833页

作者： WEI Wanyuan LI Mengwei CHEN Yulan Department of Chemistry Tianjin UniversityTianjin100354P.R.China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun130012P.R.China

We present a simple approach to fabricate a kind of composite films with a superhydrophobic and broadband light absorbing surface by ultraviolet-assisted nanoimprinting over a gradiently deposited composite *** wettability and optical property of the resultant surfaces are tunable by the deposition time before polymerization(T_(s))and mold’s *** robust and elastomeric films exhibiting high sunlight absorptivity up to 98.13%and contact angle of their surfaces up to 150°are prepared under optimized conditions,as using a mold with a small pattern size(hexagonal periodic mold with cylinder diameter of ca.37μm)under T_(s)=10 min for imprinting the crosslinked poly[di(ethylene glycol)ethyl ether acrylate]and poly(isobornyl acrylate)in the presence of polypyrrole(PPy)*** dual functions are found related to the hierarchical architecture of the surface,arising from the synergetic effects of the periodical patterned polymer substrate and spontaneously assembled PPy microstructures on the *** current strategy based on the combination of ultraviolet-assisted nanoimprint lithography and hierarchical assembly of gradiently deposited black nano-fillers offers a new insight into the design of robust superhydrophobic and black surfaces,which is helpful to deepen our understanding of the relationship between liquid/light manipulation and micro/nanostructured surfaces.

关键词： superhydrophobic surface Black absorber Composite film Ultraviolet-assisted nanoimprint lithography Hierarchical microstructure

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One-step Condensation/copolymerization of VTES and DVB for Self-assembly Bionic superhydrophobic surface Coating and Study on Oil-water Separation

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Journal of Bionic Engineering 2021年第3期18卷 559-573页

作者： Ruilong Zhang Zhiping Zhou Yi Wang Xiaohui Dai Li Chen Jiangdong Dai Research School of Polymeric Materials School of Materials Science and EngineeringJiangsu UniversityZhenjiang 2120133China State Key Laboratory of NBC Protection for Civilian Beijing 102205China Institute of Green Chemistry and Chemical Technology Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu ProvinceSchool of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013China

Mimicry of nature drives the development of bionic *** superhydrophobic materials are a kind of high-efficiency materials to handle oil spills and water ***,the stability of surface coatings of the superhydrophobic materials remains a ***,a new category of self-assembly bionic superhydrophobic surface coating was prepared via one-step condensation/copolymerization of vinyltriethoxysilane(VTES)and divinylbenzene(DVB),which realized the close combination of covalent bonds between organic(***)and inorganic matter(***),and avoided the swelling of polydivinylbenzene(PDVB)in the process of collection of oil from *** organic-inorganic hybrid polymer could self-assembly deposit on the surface of sponge even other *** example,P(VTES-DVB)-Si0_(2)/MS obtained by assembling P(VTES-DVB)-Si0_(2)on the surface of Melamine Sponge(MS)exhibited superhydrophobicity with a Water Contact Angle(WCA)of 157.3,the optimal adsorption capacity of 77 g g 136 g g-1 for diverse oils,and an excellent separation efficiency of 99.3%.Besides,the excellent acid and alkali resistance of P(VTES-DVB)-Si0_(2)/MS suggested the potential value in practical oil-water separation.P(VTES-DVB)-Si0_(2)showed the outstanding hydrophobic performance by using as coating on different *** work provided a new idea about the stable combination of organic and inorganic matter in the surface modification.

关键词： superhydrophobic surface coating oil-water separation condensation copolymerization self-assembly organic-inorganic hybridism

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Synthesis of Biomimetic superhydrophobic surface through Electrochemical Deposition on Porous Alumina

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Journal of Bionic Engineering 2011年第2期8卷 122-128页

作者： Jiadao Wang Ang Li Haosheng Chen Darong Chen State Key Laboratory of Tribology Tsinghua University Beijing 100084 P. R. China

The superhydrophobicity of plant leaves is a benefit of the hierarchical structures of their surfaces. These structures have been imitated in the creation of synthetic surfaces. In this paper, a novel process for fabrication of biomimetic hierarchical structures by electrochemical deposition of a metal on porous alumina is described. An aluminum specimen was anodically oxidized to obtain a porous alumina template, which was used as an electrode to fabricate a surface with micro structures through electrochemical deposition of a metal such as nickel and copper after the enlargement of pores. Astonishingly, a hier- archical structure with nanometer pillars and micrometer clusters was synthesized in the pores of the template. The nanometer pillars were determined by the nanometer pores. The lbrmation of micrometer clusters was related to the thin walls of the pores and the crystallization of the metal on a flat surface. From the as-prepared biomimetic surfaces, lotus-leaf-like superhydrophobic surfaces with nickel and copper deposition were achieved.

关键词： porous alumina electrochemical deposition anodization superhydrophobic surface bioinspired hierarchical structure

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Application of superhydrophobic surface on Boiling Heat Transfer Characteristics of Nanofluids

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Energy Engineering 2021年第4期118卷 825-852页

作者： Cong Qi Yuxing Wang Zi Ding Jianglin Tu Mengxin Zhu School of Electrical and Power Engineering China University of Mining and TechnologyXuzhou221116China

Boiling heat transfer is a mode using the phase change of working medium to strengthen the heat exchange due to its good heat exchange capability,and it is widely used in heat exchange *** have been used in the direction of enhanced heat transfer for their superior thermophysical *** wetting,spreading and ripple phenomena of superhydrophobic surfaces widely exist in nature and daily *** has great application value for engineering *** this article,the boiling heat exchange characteristics of nanofluids on superhydrophobic surface are numerically *** was found that with the increase of superheating degree,the steam volume ratio of unmodified heated surface increases to saturation,while the steam volume and evaporation ratio of modified superhydrophobic surface increase firstly and then *** the same time,bubbles are generated and accumulated more fully on superhydrophobic *** was also found that nanofluids with low viscosity are more affected by superhydrophobic surface characteristics,and the increase is more significant with high superheating degree,and the superhydrophobic surface is beneficial to enhancing boiling heat *** with the simulation results,it could be concluded that the boiling heat exchange performance of CuO-water nano-fluids on the modified superhydrophobic surface is better than that of CuO-ethylene glycol nanofluids under high superheating degree.

关键词： Nanofluids superhydrophobic surface pool boiling heat transfer numerical simulation

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Simple Fabrication of Hierarchical Micro/Nanostructure superhydrophobic surface with Stable and Superior Anticorrosion Silicon Steel via Laser Marking Treatment

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Journal of Wuhan University of Technology(Materials Science) 2020年第2期35卷 411-417页

作者： FU Jing TANG Mingkai ZHANG Qiaoxin School of Mechanical and Electronic Engineering Henan Institute of TechnologyXinxiang 453003China School of Mechanical and Electronic Engineering Wuhan University of TechnologyWuhan 430070China

To improve the weak corrosion resistance of silicon steel to acid solution and alkaline solution with high temperature,a stable hierarchical micro/nanostructure superhydrophobic surface with myriad irregular micro-scale hump and sheet-like nanostructure was successfully prepared on silicon steel by a simple,efficient and facile operation in large-area laser marking *** morphology,composition,wettability of the as-prepared surface were *** superhydrophobic performance of the surface was investigated as ***,the corrosion resistance of the superhydrophobic surface to acidic solutions at room temperature and alkaline solutions at high temperature (80 ℃) was carefully *** corrosion resistance mechanism was ***,considering the practical application of the surface in the future,the hardness of the hierarchical micro/nanostructure superhydrophobic surface was *** experimental results indicate that the hierarchical micro/nanostructure surface with texture spacing of 100 μm treated at laser scanning speed of 100 mms/ presents superior superhydrophobicity after decreasing surface *** contact angle can be as high as 156.6°.Additionally,the superhydrophobic surface provide superior and stable anticorrosive protection for silicon steel in various corrosive *** importantly,the prepared structure of the surface shows high hardness,which ensures that the surface of the superhydrophobic surface cannot be destroyed *** surface is able to maintain great superhydrophobic performance when it suffers from slight impacting and abrasion.

关键词： silicon steel laser marking hierarchical micro/nanostructure superhydrophobic surface corrosion resistance

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Electrospinning in membrane contactor:manufacturing Elec-PVDF/SiO2 superhydrophobic surface for efficient flue gas desulphurization applications

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Green Chemical Engineering 2021年第1期2卷 111-121页

作者： Qingping Xin Kaiqiang Xie Qingqing Liang Xu Li Yinan Zeng Yuhang Zhao Lei Zhang Shaofei Wang Hong Li Yuzhong Zhang State Key Laboratory of Separation Membranes and Membrane Processes School of Materials Science and EngineeringTiangong UniversityTianjin300387China Department of Chemical Engineering Massachusetts Institute of TechnologyCambridgeMA02139United States

In membrane contactors,maintaining a high SO_(2)absorption flux and an excellent wetting resistance are crucial for hazardous gas *** this study,we adopted an electrospinning strategy to fabricate highly robust superhydrophobic dual-layer Elec-PVDF/SiO_(2)composite membrane contactors used for flue gas *** composite membrane contactor consisted of a durable and ultrathin three-dimensional(3D)superhydrophobic surface and a porous supporting layer,where the formulation was optimized by regulating the PVDF concentration,solvent ratio and SiO_(2)particles content in electrospinning *** scanning electronic microscopy(SEM),EDS-mapping,water contact angle(WCA)and surface roughness of as-prepared Elec-PVDF/SiO_(2)composite membrane contactors were conducted to explore the physical and chemical *** SiO_(2)nanoparticles were uniformly loaded in ElecPVDF/SiO_(2)composite membrane contactor,and constructed micro-nano dual-coarse lotus-leaf-like morphology,which noticeably elevated surface roughness(Ra).The SiO_(2)nanoparticles also functioned as hydrophobic modifiers,which boosted the WAC up to 155.The SO_(2)absorption fluxes and SO_(2)removal efficiencies were *** particular,the membrane contactor doped with 20 wt%SiO_(2)nanoparticles significantly elevated the stability of desulfurization ***,the membrane mass transfer coefficient(Km)and corresponding membrane mass transfer resistance(H/Km)were explored.

关键词： Electrospinning Composite membrane contactor superhydrophobic surface Flue gas desulfurization SO2 absorption flux

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Triboelectric‘electrostatic tweezers'for manipulating droplets on lubricated slippery surfaces prepared by femtosecond laser processing

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International Journal of Extreme Manufacturing 2024年第3期6卷 411-426页

作者： Jiale Yong Xinlei Li Youdi Hu Yubin Peng Zilong Cheng Tianyu Xu Chaowei Wang Dong Wu CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of ChinaHefei 230027People’s Republic of China

The use of‘Electrostatic tweezers'is a promising tool for droplet manipulation,but it faces many limitations in manipulating droplets on superhydrophobic ***,we achieve noncontact and multifunctional droplet manipulation on Nepenthes-inspired lubricated slippery surfaces via triboelectric electrostatic tweezers(TETs).The TET manipulation of droplets on a slippery surface has many advantages over electrostatic droplet manipulation on a superhydrophobic *** electrostatic field induces the redistribution of the charges inside the neutral droplet,which causes the triboelectric charged rod to drive the droplet to move forward under the electrostatic *** or negatively charged droplets can also be driven by TET based on electrostatic attraction and *** enables us to manipulate droplets under diverse conditions,including anti-gravity climb,suspended droplets,corrosive liquids,low-surface-tension liquids(*** with a surface tension of 22.3 mN·m^(-1)),different droplet volumes(from 100 nl to 0.5 ml),passing through narrow slits,sliding over damaged areas,on various solid substrates,and even droplets in an enclosed *** droplet-related applications,such as motion guidance,motion switching,droplet-based microreactions,surface cleaning,surface defogging,liquid sorting,and cell labeling,can be easily achieved with TETs.

关键词： triboelectric electrostatic tweezer droplet manipulation slippery surface superhydrophobic surface femtosecond laser

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Research progress of slippage characteristic and gas film stability enhancement methods on biomimetic hydrophobic surfaces

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Journal of Hydrodynamics 2024年第1期36卷 87-101页

作者： Meng-zhuo Zhang Hai-bao Hu Liu-zhen Ren Lu-yao Bao Jun Wen Luo Xie School of Marine Science and Technology Northwestern Polytechnical UniversityXi’an710072China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen518063China

The biomimetic hydrophobic surface is a potentially efficient underwater drag reduction method and the drag reduction mechanism of this kind of surface comes from the interfacial *** now,it is a hotspot to grasp the slippage characteristic and explore slippage enhancement *** paper not only summarizes our numerical simulation and experimental results of slippage characteristic at the solid-liquid interface(SLI)of hydrophobic surfaces(HS)and the gas-liquid interface(GLI)of superhydrophobic surfaces(SHS)in recent years,but also introduces some innovative methods that can effectively improve the gas film stability and drag reduction effect of ***,we used the molecular dynamics(MD)simulation method to figure out the effect of the solid-liquid interaction strength,the system temperature and the shear rate on the slippage of SLI,and expound their action mechanism from molecular ***,by MD and multibody dissipative particle dynamics(MDPD)method,the slippage behavior at the GLI was studied under the influence of the microstructure size and the flow driving *** proposed a new kind of hybrid slip boundary condition model to describe the slippage characteristic on *** addition,we found through experiment that a three-dimensional backflow will appear on the GLI under the interfacial adsorption of surfactants,and the backflow direction will reverse with the change of GLI ***,we put forward the wettability step structure and gas injection method to enhance the stability and drag reduction effect of the gas film on SHS.

关键词： Hydrophobic surface superhydrophobic surface interfacial slip underwater drag reduction

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