One-step fabrication of highly stable, superhydrophobic composites from controllable and low-cost PMHS/TEOS sols for efficient oil cleanup

Guo, Ping; Zhai, Shangru; Xiao, Zuoyi; An, Qingda

doi:10.1016/j.jcis.2015.01.062

Cited by 52 publications

(23 citation statements)

References 52 publications

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“…This coating is inspired from the nature of the plant leaf surface Nelumbo nucifera or lotus is often called hydrophobic. Some types of silane-based compounds have been used to modify textiles such as γ-methacryloxypropyl trimethoxy silane (MAPS) and hexamethyldisilazen (HMDS) (Gao, Watanabe, Nakane, and Zhao, 2016); perfluorooctylated quaternary ammonium silane coupling agent (PFSC) (Yu, Gu, Meng, and Qimg, 2007); polymethylhydroxysilosane (PMHS) and tetraethoxysilane (TEOS) (Guo, Zhai, Xiao, and An, 2015); and Hexadecyltrimethoxysilane (HDTMS) (Xue et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The Hydrophobicity and the Antibacterial Activity of Polyester Modified With Silver Nanoparticle and Hexadecyltrimethoxysilane

Rohaeti

Rakhmawati

2017

Molekul

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The objective of this research was to study hydrophobicity and antibacterial activity of polyester fibers before and after modification by using silver nanoparticles as antibacterial agent and hexadecyltrimethoxysilane (HDTMS) as a self-cleaning agent. The research was conducted in stages, preparation of silver nanoparticles, deposition of silver nanoparticles on polyester fiber, modification of polyester fiber through the addition HDTMS, and characterization. Modification of polyester fibers with silver nanoparticles and HDTMS was conducted through dipping method, followed by curing. Characterization was performed by testing the contact angle and antibacterial activity against Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 35218. Silver nanoparticles have been prepared by adding sodium citrate and polyvinylalcohol as a stabilizer. The addition of silver nanoparticles decreased hydrophobicity of polyester fibers without and with modification. Modification with HDTMS increased the hydrophobicity of polyester fibers. Modification with silver nanoparticles and HDTMS increased antibacterial activity of polyester fabrics. Statistic analysis showed that there were significant differences in the antibacterial activity of polyester fibers against Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 35218.Keywords: antibacterial activity, hydrophobicity, silver nanoparticles, polyester fabric. ABSTRAKPenelitian ini bertujuan untuk mempelajari hidrofobisitas dan aktivitas antibakteri serat poliester sebelum dan sesudah modifikasi dengan penambahan bahan antibakteri berupa nanopartikel perak dan penambahan bahan antikotor berupa heksadesiltrimetoksisilan (HDTMS). Tahapan penelitian yang dilakukan meliputi preparasi nanopartikel perak secara kimia, deposit nanopartikel perak pada serat poliester, modifikasi serat polyester melalui penambahan HDTMS, dan karakterisasi. Modifikasi serat poliester dengan nanopartikel perak dan HDTMS dilakukan melalui metode pencelupan yang dilanjutkan dengan proses curing. Karakterisasi dilakukan melalui uji sudut kontak dan uji aktivitas antibakteri terhadap bakteri Staphylococcus aureus ATCC 25923 dan Escherichia Coli ATCC 35218. Nanopartikel perak dapat dipreparasi melalui penambahan natrium sitrat dan penstabil polivinilalkohol. Penambahan nanopartikel perak menurunkan sifat hidrofobisitas dari serat poliester tanpa dan dengan modifikasi. Penambahan heksadesiltrimetoksisilan meningkatkan hidrofobisitas serat poliester. Modifikasi dengan nanopartikel perak dan HDTMS meningkatkan aktivitas antibakteri serat poliester terhadap bakteri Staphylococcus aureus ATCC 25923 dan Escherichia Coli ATCC 35218. Analisis statistik menunjukkan adanya perbedaan yang signifikan dalam hal aktivitas antibakteri serat poliester terhadap bakteri Staphylococcus aureus ATCC 25923 dan Escherichia Coli ATCC 35218.Kata kunci : aktivitas antibakteri, hidrofobisitas, nanopartikel perak, serat poliester.

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Section: Introductionmentioning

confidence: 99%

The Hydrophobicity and the Antibacterial Activity of Polyester Modified With Silver Nanoparticle and Hexadecyltrimethoxysilane

Rohaeti

Rakhmawati

2017

Molekul

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“…Inspired by the potential application of superhydrophobic surfaces, many researchers have fabricated these surfaces successfully by electrodeposition, 15 anodization, 16 laser treatment, 17 chemical vapour deposition, 18 layer-by-layer deposition, 19 chemical deposition, 20 sol-gel method, 21 template 22 and one-step immersion process 23,24 etc. However, most of them require organic reagent as the modifier; yet, the organic modification will restrict the intrinsic property of the metal substrates, such as excellent electro-conductivity, thermal conductivity and high temperature resistance.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of superhydrophobic Au–Zn alloy surface on a zinc substrate for roll-down, self-cleaning and anti-corrosion properties

Cheng

Lü

et al. 2015

J. Mater. Chem. A

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Superhydrophobic Au-Zn alloys surfaces have been fabricated successfully on zinc substrate via chemical substitution deposition and subsequent annealing treatment. The resulting surfaces exhibited remarkable superhydrophobicity with a WCA of 170 ±2º and a WSA smaller than 1º without any organic modification. The surface morphologies and chemical compositions were investigated using field emission scanning electron microscopy (FESEM) equipped with an energydispersive spectroscopy (EDS), x-ray powder diffraction (XRD) and x-ray photoelectron spectroscopy (XPS), and the surface roughness was analyzed by atomic force microscopy (AFM). The theoretical mechanism for superhydrophobicity and wettability were also analyzed respectively. The surface wettability changed from superhydrophilicity to superhydrophobicity with stable Cassie-Baxter state via thermal treatment, which caused the generation of Au-Zn alloys (including AuZn3 and AuZn) and ZnO, and the formation of micro-/nano-binary architectures. The resulting superhydrophobic Au-Zn alloys surfaces exhibited exquisite roll-down, self-cleaning, and excellent anti-corrosion properties, and also had firm mechanical property about 10 N, and this might have important values for more potential applications. The corrosion current density was reduced by more than 2 order of magnitude for the resulting superhydrophobic surface in comparison with the untreated zinc surface and this should owe to the contribution of Au-Zn alloys on the surface.

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“…Guo et al. prepared superhydrophobic & superoleophilic materials using polyester sponges as substrates through coating of hybrid silica colloid particles . The sponges exhibited excellent selectivity, high efficiency, outstanding rapidity and remarkable recyclability.…”

Section: Removal Of Emulsified Insoluble Organic Liquidsmentioning

confidence: 99%

Removal of Organic Pollutants from Water Using Superwetting Materials

Zhang

Wang

2017

The Chemical Record

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The frequent occurrence of water pollution accidents and the leakage of organic pollutants have caused severe environmental and ecological crisis. It is thus highly imperative to find efficient materials to solve the problem. Inspired by the lotus leaf, superwetting materials are receiving increasing attention in the field of removal of organic pollutants from water. Various superwetting materials have been successfully generated and integrated into devices for removal of organic pollutants from water. On the basis of our previous work in the field, we summarized in this account the progress of removal of (1) floating and underwater insoluble, (2) emulsified insoluble, and (3) both insoluble and soluble organic pollutants from water using superwetting materials including superhydrophobic & superoleophilic materials, superhydrophilic & underwater superoleophobic materials, and materials with controllable wettability. The superwetting materials are in the forms of 2D porous materials, 3D porous materials and particles, etc. Finally, the current state and future challenges in this field are discussed. We hope this account could shed light on the design of novel superwetting materials for efficient removal of organic pollutants from water.

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One-step fabrication of highly stable, superhydrophobic composites from controllable and low-cost PMHS/TEOS sols for efficient oil cleanup

Cited by 52 publications

References 52 publications

The Hydrophobicity and the Antibacterial Activity of Polyester Modified With Silver Nanoparticle and Hexadecyltrimethoxysilane

The Hydrophobicity and the Antibacterial Activity of Polyester Modified With Silver Nanoparticle and Hexadecyltrimethoxysilane

Fabrication of superhydrophobic Au–Zn alloy surface on a zinc substrate for roll-down, self-cleaning and anti-corrosion properties

Removal of Organic Pollutants from Water Using Superwetting Materials

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