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期刊论文 13

年份

2023 1

2022 6

2020 1

2019 1

2018 1

2014 3

关键词

超疏水 3

木材表面 2

3D打印 1

PVA/SiO2 1

复合薄膜 1

木材 1

机械稳定性 1

水滴 1

油包水乳液 1

油水分离 1

溶胶-凝胶 1

滴涂法 1

破乳 1

磁性 1

纳米 1

自供能感知 1

超疏水膜 1

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Biodegradable, superhydrophobic walnut wood membrane for the separation of oil/water mixtures

《化学科学与工程前沿(英文)》 2022年 第16卷 第9期   页码 1377-1386 doi: 10.1007/s11705-022-2157-z

摘要: The preparation of environmentally friendly oil/water separation materials remains a great challenge. Freeze-drying of wood after lignin removal yields wood aerogels, which can be used as substrates to prepare fluorine-free environmentally friendly superhydrophobic materials, However, they are more suitable for absorption rather than filtration applications due to their poor strength. A study using cross-sections of pristine wood chips as substrates retains the original strength of wood, but the use of the cross-sectional of wood pieces limits their thickness, strength, and size. In this paper, a degradable fluorine-free superhydrophobic film (max. water contact angle of approximately 164.2°) with self-cleaning and abrasion resistance characteristics was prepared by a one-step method using pristine and activated walnut longitudinal section films as the substrate, with tetraethyl orthosilicate as a precursor and dodecyltriethoxysilane as a modifier. The tensile strength results show that superhydrophobic films with pristine or activated wood substrates maintained the strength of pristine wood and were 2.2 times stronger than the wood aerogel substrate. In addition, after cross-laminating the two samples, the films had the ability to separate oil and water by continuous filtration with high efficiency (98.5%) and flux (approximately 1.3 × 103 L∙m‒2∙h‒1). The method has potential for the large-scale fabrication of degradable superhydrophobic filtration separation membranes.

关键词: wood nanotechnology     superhydrophobic     biodegradable     surface modification     oil/water separation    

Effective and selective separation of perrhenate from acidic wastewater by super-stable, superhydrophobic

《环境科学与工程前沿(英文)》 2022年 第16卷 第2期 doi: 10.1007/s11783-021-1456-9

摘要:

• A ZnO-biochar hybrid composite was prepared by solvothermal-pyrolysis synthesis.

关键词: Selectivity     Adsorption     Re(VII)     ZnO     Biochar    

Facile generation of highly durable thiol-functionalized polyhedral oligomeric silsesquioxane based superhydrophobic

《化学科学与工程前沿(英文)》 2022年 第16卷 第8期   页码 1247-1258 doi: 10.1007/s11705-021-2124-0

摘要: In this study, a durable superhydrophobic/superoleophilic melamine foam was fabricated by a facile and rapid one-step thiol-ene click chemistry and Michael addition reaction, which demonstrated excellent robustness in oil/water separation. First, 1H, 1H, 2H-perfluoro-1-hexene reacted with thiol-functionalized polyhedral oligomeric silsesquioxane via the thiol-ene click chemistry to obtain a fluorinated thiol-functionalized polyhedral oligomeric silsesquioxane solution. Subsequently, the melamine foam was immersed to the solution system to form nanoaggregates on the melamine foam surface by the Michael addition reaction in the presence of ultraviolet light. The micro/nano rough structure and low surface energy of the nanoaggregates layer endowed the pristine melamine foam with superhydrophobicity; the water contact angle was greater than 150°. More importantly, the as-prepared melamine foam could withstand harsh conditions, such as a corrosive solution environment, strong ultraviolet light, mechanical compression, high and low temperature exposure, and ultrasonic washing. Driven by gravity, the as-prepared melamine foam could efficiently separate the oil/water mixtures and maintain 98% separation efficiency at high and low temperatures. In addition, it maintained the desirable absorption capability in different oil/organic solvents even after 15 absorption cycles. Accordingly, this facile, low-cost, and robust one-step method provides important support for the superhydrophobic oil/water separation field.

关键词: superhydrophobic melamine foam     thiol-functionalized polyhedral oligomeric silsesquioxane     durable     oil/water separation    

一种提高超疏水木材机械稳定性的方法

王成毓,刘峰

《中国工程科学》 2014年 第16卷 第4期   页码 79-82

摘要:

超疏水表面稳定性、耐久性的提升,对于其是否能达到商业应用的要求有着至关重要的作用。本 文将聚乙烯醇(PVA)与二氧化硅(SiO2)复合,通过滴涂法在木材表面形成一层有机-无机复合薄膜,之后对薄膜进行疏水改性,制得了一种机械稳健性较好的超疏水木材。所制得的木材有很好的防水性、较低的滚动角和较好的机械稳定性。

关键词: 超疏水     机械稳定性     PVA/SiO2     木材表面    

溶胶-凝胶原位生长制备超疏水木材

梁金,吴义强,刘明

《中国工程科学》 2014年 第16卷 第4期   页码 87-91

摘要:

采用溶胶-凝胶原位生长的方法制备超疏水木材,在木材表面形成一层纳米结构超疏水薄膜,水滴在木材表面接触角达到150.6°。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、傅立叶变换红外光谱仪(FTIR)分别对超疏水木材样品的物相组成、表面形貌及表面化学官能团进行检测,分析表明木材的超疏水性是表面纳米级突起粗糙结构和乙烯基疏水基团共同作用的结果。

关键词: 木材     超疏水     溶胶-凝胶     纳米    

超疏水SiO2/PS 薄膜于木材表面的构建

张明,王成毓

《中国工程科学》 2014年 第16卷 第4期   页码 83-86

摘要:

通过溶胶-凝胶法一步合成疏水性且具备独特形貌的二氧化硅粒子,联合聚苯乙烯以滴涂的方式 于木材表面仿生合成了稳定性超疏水薄膜。经处理后的木材表面与水的静态接触角为153°,滚动角小于5°。通过扫描电子显微镜照片观察到该复合涂层拥有微米/亚微米的二维等级粗糙结构,该结构协同低表面能物质共同决定超疏水性木材的成功制得。此外,进一步研究了超疏水性木材表面的稳定性和耐久性。结果表明,该超疏水性木材于水、腐蚀性液体(酸液/碱液)、常见有机溶剂中以及一些常见条件下仍保留超疏水特性,为未来木材材料的应用领域扩展提供了有利条件。

关键词: 超疏水     木材表面     滴涂法     复合薄膜    

Preparation and properties of a silver particle-coated and 1-dodecanethiol-modified superhydrophobic

《化学科学与工程前沿(英文)》 2022年 第16卷 第8期   页码 1237-1246 doi: 10.1007/s11705-022-2140-8

摘要: A Ag particle-coated and 1-dodecanethiol-modified melamine sponge (Ag-DDT-MS) was prepared through surface roughness by coating silver particles and subsequent grafting of a hydrophobic long hydrocarbon chain. Superhydrophobic and 3D porous Ag-DDT-MS was characterized by Fourier transform infrared spectroscopy, scanning electron microscope, energy-dispersive X-ray spectroscopy, and X-ray diffraction. The water contact angle of Ag-DDT-MS reached 159.2°. Ag-DDT-MS exhibited excellent absorption capacity for high viscous oils and organic solvents, ranging from 42.8 to 105.2 g∙g−1. The absorbed oils can be easily collected by the mechanical pressing process, and the oil recovery rate was satisfactory, more than 90% after 20 recycles. Ag-DDT-MS material also demonstrated good stability and excellent compression-recovery ability, keeping 88.6% of the initial height after ten compression-release cycles.

关键词: melamine sponge     oil-absorbing material     hydrophobic     oil-water separation     oil absorption capacity    

A free-standing superhydrophobic film for highly efficient removal of water from turbine oil

Fan Shu, Meng Wang, Jinbo Pang, Ping Yu

《化学科学与工程前沿(英文)》 2019年 第13卷 第2期   页码 393-399 doi: 10.1007/s11705-018-1754-3

摘要: A free-standing superhydrophobic film is prepared by sequentially dip-coating a commercially available filter paper with nano SiO suspension, epoxy emulsion, and octyltrimethoxysilane solution. A surface with micro- or nano-roughness is formed because SiO nanoparticles are uniformly and firmly adhered on the backbone of the filter paper by the cured epoxy resin. Furthermore, the surface energy is significantly reduced because of introducing octytrimethoxysilane. Such a surface structure makes the prepared film a superhydrophobic material. Due to its free-standing nature, this superhydrophobic film can be used to remove water from turbine oil by filtration. The efficiency of water removal is high (up to 94.1%), and the filtration process is driven solely by gravity without extra energy consumption. Because of the facile fabrication process and the high efficiency of water removal, this free-standing superhydrophobic film may find application in power industry.

关键词: superhydrophobicity     nanoparticles     dip coating     epoxy emulsion     turbine oil    

Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

《能源前沿(英文)》 2020年 第14卷 第1期   页码 127-138 doi: 10.1007/s11708-020-0661-8

摘要: This paper investigated effects of slip length and hydraulic diameter on the hydraulic entrance length of laminar flow in superhydrophobic microchannels. Numerical investigations were performed for square microchannels with Re ranging between 0.1 and 1000. It is found that superhydrophobic microchannels have a longer hydraulic entrance length than that of conventional ones by nearly 26.62% at a low Re. The dimensionless hydraulic entrance length slightly increases with the increasing slip length at approximately Re<10, and does not vary with the hydraulic diameter. A new correlation to predict the entrance length in square microchannels with different slip lengths was developed, which has a satisfying predictive performance with a mean absolute relative deviation of 5.69%. The results not only ascertain the flow characteristics of superhydrophobic microchannels, but also suggest that super hydrophobic microchannels have more significant advantages for heat transfer enhancement at a low Re.

关键词: laminar flow     hydraulic entrance length     super hydrophobic surface     slip length     hydraulic diameter    

Bioinspired cellulose-based membranes in oily wastewater treatment

《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1515-2

摘要:

• Cellulose-based membrane separates oily wastewater mimicking the living things.

关键词: Cellulose     Bioinspired membrane     Superhydrophobic surface     Underwater superoleophobic surface     Oil-water separation    

膜接触破乳——用于油包水乳液分离的超疏水ZIF-8@rGO膜 Article

顾佳慧, 瞿周, 张祥宁, 范红玮, 李春喜, Jürgen Caro, 孟洪

《工程(英文)》 2023年 第23卷 第4期   页码 73-81 doi: 10.1016/j.eng.2022.02.017

摘要:

水-油界面不平衡是实现油包水乳液破乳的关键。传统膜通常是依赖较高的跨膜压力破坏界面平衡而实现破乳。本文提出了可自然、快速地破坏水-油界面平衡的“接触破乳”的概念,开发了一种对有机组分具有高通量的新型破乳分离膜。具体制备过程分为两步,首先通过真空辅助抽滤法在聚四氟乙烯(PTFE)基底上组装ZIF-8@rGO微球(ZGS)层,再采用聚二甲基硅氧烷(PDMS)交联溶液进行固定化处理。由于ZGS表面为微纳米阶层结构,所制备的ZIF-8@rGO@PDMS/PTFE(ZGPP)膜表面展现出超疏水性特性,当表面活性剂稳定的油包水乳液接触到膜表面时,微纳结构的超疏水膜表面会引起水-油界面不平衡。ZGPP膜对油包水乳液具有良好的分离破乳性能,在0.15 bar(15 kPa)的低跨膜压力下,分离效率可以达到99.57%,通量可达到2254 L·m‒2·h‒1,且对于表面活性剂稳定的纳米级甲苯水乳液(平均液滴尺寸为57 nm)的体系也可以实现破乳分离。“接触破乳”概念的提出有望为开发新一代油包水乳液分离的破乳膜提供新的思路。

关键词: 油包水乳液     破乳     油水分离     超疏水膜    

Superhydrophobic, mechanically flexible and recyclable reduced graphene oxide wrapped sponge for highly

Lijuan Qiu, Ruiyang Zhang, Ying Zhang, Chengjin Li, Qian Zhang, Ying Zhou

《化学科学与工程前沿(英文)》 2018年 第12卷 第3期   页码 390-399 doi: 10.1007/s11705-018-1751-6

摘要:

Water pollution has become an urgent issue for our modern society, and it is highly desirable to rapidly deal with the water pollution without secondary pollution. In this paper, we have prepared a reduced graphene oxide (RGO) wrapped sponge with superhydrophobicity and mechanically flexibility via a facile low-temperature thermal treatment method under a reducing atmosphere. The skeleton of this sponge is completely covered with RGO layers which are closely linked to the skeleton. This sponge has an abundant pore structure, high selectivity, good recyclability, low cost, and outstanding adsorption capacity for floating oil or heavy oil underwater. In addition, this sponge can maintain excellent adsorption performance for various oils and organic solvents over 50 cycles by squeezing, and exhibits extremely high separation efficiencies, up to 6 × 106 and 3.6 × 106 L·m−3·h−1 in non-turbulent and turbulent water/oil systems, respectively. This superhydrophobic adsorbent with attractive properties may find various applications, especially in large-scale removal of organic contaminants and oil spill cleanup.

关键词: superhydrophobicity     mechanically flexibility     water/oil separation     reduced graphene oxide wrapped sponge    

可自供能感知液滴撞击的3D打印超疏水磁性器件 Article

张璇, 王琦, 邹瑞萍, 宋波, 闫春泽, 史玉升, 苏彬

《工程(英文)》 2022年 第15卷 第8期   页码 197-206 doi: 10.1016/j.eng.2022.04.009

摘要:

三维(3D)打印的软磁结构在工程和材料领域已引起广泛关注和研究。这种结构驱动形状改变的力会导致磁场分布发生变化,表明这种结构具有将机械能转化为电能的能力。在本文的研究工作中,通过整合两种3D打印方法,制造了一种具有柔性超疏水和磁性的器件。3D打印磁性器件(3DMD)在连续滴水时,表现出具有长期稳定的力电转换能力,输出电流比现有文献记录的输出电流高。结合麦克斯韦数值仿真,研究了3DMD的力电转换机理,进而指导了各种参数的调控。此外,通过连续的雨水收集,三个集成的3DMD点亮了一个商用发光二极管(LED)。这种结合了能量转换的组合型设计有望推动 3D打印领域的发展。

关键词: 3D打印     自供能感知     磁性     水滴    

标题 作者 时间 类型 操作

Biodegradable, superhydrophobic walnut wood membrane for the separation of oil/water mixtures

期刊论文

Effective and selective separation of perrhenate from acidic wastewater by super-stable, superhydrophobic

期刊论文

Facile generation of highly durable thiol-functionalized polyhedral oligomeric silsesquioxane based superhydrophobic

期刊论文

一种提高超疏水木材机械稳定性的方法

王成毓,刘峰

期刊论文

溶胶-凝胶原位生长制备超疏水木材

梁金,吴义强,刘明

期刊论文

超疏水SiO2/PS 薄膜于木材表面的构建

张明,王成毓

期刊论文

Preparation and properties of a silver particle-coated and 1-dodecanethiol-modified superhydrophobic

期刊论文

A free-standing superhydrophobic film for highly efficient removal of water from turbine oil

Fan Shu, Meng Wang, Jinbo Pang, Ping Yu

期刊论文

Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

期刊论文

Bioinspired cellulose-based membranes in oily wastewater treatment

期刊论文

膜接触破乳——用于油包水乳液分离的超疏水ZIF-8@rGO膜

顾佳慧, 瞿周, 张祥宁, 范红玮, 李春喜, Jürgen Caro, 孟洪

期刊论文

Superhydrophobic, mechanically flexible and recyclable reduced graphene oxide wrapped sponge for highly

Lijuan Qiu, Ruiyang Zhang, Ying Zhang, Chengjin Li, Qian Zhang, Ying Zhou

期刊论文

可自供能感知液滴撞击的3D打印超疏水磁性器件

张璇, 王琦, 邹瑞萍, 宋波, 闫春泽, 史玉升, 苏彬

期刊论文