Transparent Oil–Water Separating Spiky SiO2 Nanoparticle Supramolecular Polymer Superhydrophobic Coatings

Author:

Nguyen Nguyen Binh1,Ly Nguyên Hoàng2,Tran Huynh Nhu1,Son Sang Jun2,Joo Sang‐Woo1,Vasseghian Yasser134,Osman Sameh M.5,Luque Rafael67ORCID

Affiliation:

1. Department of Chemistry Soongsil University Seoul 06978 South Korea

2. Department of Chemistry Gachon University Seongnam 13120 South Korea

3. University Centre for Research & Development Department of Mechanical Engineering Chandigarh University Gharuan Mohali Punjab 140413 India

4. Department of Sustainable Engineering Saveetha School of Engineering SIMATS Chennai 602105 India

5. Chemistry Department College of Science King Saud University Riyadh 11451 Saudi Arabia

6. Departamento de Química Orgánica Universidad de Córdoba Campus de Rabanales Edificio Marie Curie (C‐3) Cordoba 14014 Spain

7. Peoples Friendship University of Russia (RUDN University) Moscow 117198 Russian Federation

Abstract

AbstractA potential application of spiky SiO2 nanoparticles (NPs) with tubular and rough surfaces is investigated as superhydrophobic coatings, for their unique transparent, fluorinate‐free, and environmentally friendly properties. This study demonstrates a facile method for the successful fabrication of superhydrophobic coatings and SiO2@polydimethylsiloxane (PDMS) using spiky SiO2 NPs, N‐coordinated boroxines, and PDMS. Combined with spray coating technology, this method of superhydrophobic coating can be simply applied to both hydrophilic and hydrophobic surfaces, including wood, fabric, glass, metal, sponge, and paper. The nanocomposite coating on the glass surface showed both excellent superhydrophobicity and high transparency, with a contact angle of 165.4 ± 1.0° and 96.93% transmittance at 550 nm, respectively. SiO2@PDMS‐modified glass substrate is found to be resilient to UV irradiation, water, and high temperature treatments at ambient conditions. Experimental data demonstrated that the simple but effective combination of N‐boroxine‐PDMS and spiky SiO2 NPs produces a layered coating material that exhibits many good integrated surface properties, including stability, transparency, superhydrophobicity, and oil–water separation.

Funder

National Research Foundation of Korea

King Saud University

Publisher

Wiley

Subject

General Materials Science,General Chemistry

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