International Journal of Waste Resources

Superhydrophobic candle soot coating directly deposited on aluminum substrate with enhanced robustness

15^th World Congress and Expo on Recycling

October 16-17, 2023 | Vancouver, Canada

Hussein Ali Hussein, Sabah Ibrahim Wais and Khedir R. Khedir

University of Duhok, Kurdistan Region, Iraq American University of Kurdistan, Iraq

Scientific Tracks Abstracts: Int J Waste Resour

Abstract:

In this study, superhydrophobic surfaces were developed by using a simple and environmentally friendly technique. The nano-network of candle soot (CS) as the byproduct of incomplete combustion of paraffin candles was directly coated onto both smooth and micro-rough aluminum (Al) substrates for various time periods of deposition. The simple technique of mechanical sanding was used to impart micro-rough structures onto Al substrates using different sandpaper grit sizes. The scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), atomic force microscopy (AFM), and X-ray diffraction (XRD) techniques were used to characterize the morphology and chemistry of the prepared surfaces. Wetting analysis of the prepared surfaces was performed by measuring both water droplet contact angle (CA) and sliding angle (SA). The prepared coatings showed superhydrophobic properties with high CAs and low SAs for CS surfaces coated on roughened Al substrates. Moreover, the robustness of the prepared surfaces was tested by continuous impingement of water droplets onto their surfaces from various heights. Post-testing wetting analysis showed that the micro-nano surfaces of candle soot coated on micro-roughened Al substrates demonstrated improved robustness. These surfaces could be useful for self-cleaning, anti-corrosion, and anti-icing applications.

Biography :

Hussein has a Ph.D. in the field of Applied Physics, especially in developing solid surfaces with super repelling properties toward liquids at the physics department, College of Science, University of Duhok (UoD) in Kurdistan Region of Iraq. He was awarded a scholarship from Kurdistan Regional Government (KRG) in 2011 Round One to study M.Sc. overseas. He completed his M.Sc. degree in the on advanced materials at the University of Glasgow, in 2013. He also earned his B.Sc. in physics from the physics department, College of Science, University of Duhok in 2010.