Biodegradable superhydrophobic coatings for self-cleaning ceramic surfaces
Developing a biodegradable superhydrophobic/oleophobic coating for ceramic toilet bowls to enhance self-cleaning and stain resistance by mimicking natural lotus-like surfaces.
Overview
This innovative research focuses on creating a biodegradable superhydrophobic and oleophobic coating for ceramic toilet bowls. Inspired by natural surfaces like the lotus leaf, this coating aims to address common staining issues in polished ceramic surfaces by offering enhanced self-cleaning, anti-stain, and anti-slip properties. This solution is particularly beneficial for high-traffic areas where maintaining cleanliness and appearance is crucial.
Technical specifications
The coating utilizes a layer-by-layer approach incorporating materials such as metal (di)oxides like ZnO and SiO2, along with silica gel nanoparticles and silicon polymers. These components work together to increase hydrophobicity and whiteness while providing a stable, uniform base achieved through heat treatment. The coating's formulation ensures the control of surface energy by adjusting hydrophobicity and roughness, mimicking the water and oil repelling properties of natural surfaces. Key testing methods include surface morphology analysis, contact angle measurements, and durability assessments.
Technology readiness level
Currently at Technology Readiness Level 3, this coating is in the experimental proof of concept phase. Future development will focus on material selection, formulation optimization, and comprehensive testing to ensure performance and scalability. The ultimate goal is to compare the biodegradable coating's effectiveness against existing market solutions, emphasizing durability and long-term stain resistance.
About Toronto Metropolitan University
Toronto Metropolitan University is a comprehensive public research university in the heart of downtown Toronto, recognized for experiential, career‑integrated education and a diverse, industry‑connected student body. Industry access is embedded through co‑located and community‑based platforms, including the DMZ startup incubator and a university‑wide Zone Learning network that connects companies with faculty and student innovators. A dedicated Centre for Urban Innovation hosts collaborative labs and pilot spaces, while the Brampton‑based School of Medicine—affiliated with William Osler Health System—creates direct pathways for clinical training and partnership; the Rogers Cybersecure Catalyst extends capacity in workforce development and applied solutions. Research is supported by competitive federal and provincial funding, including NSERC, CIHR, SSHRC and the Canada Foundation for Innovation. A formal commercialization framework and IP policy provide structured support for protection, licensing and venture creation.
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