Synthesis of antimony-doped tin oxide nanoparticles for IR cutting coating

• Main Author: Ng, Vincent Ming Hong
• Other Authors: School of Materials Science and Engineering
• Format: Final Year Project
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering
• Online Access: http://hdl.handle.net/10356/56104
• Institution: Nanyang Technological University

With regards to the context of tropical climate in Singapore, a simple infrared (IR) cutting coating on windows can provide all year round passive cooling to a room as it reduces the unwanted heat gain from near-infra radiation (NIR). Although such coatings are already commercially available, the adoption of such technology has not been as forthcoming. Through studies and understanding of such coatings, it is intended to make such coatings more cost efficient for on-site coating so as to entice more building owners to retrofit their buildings. By incorporating small nanoparticles of about 10 nm antimony-doped tin oxide (ATO, Sb: SnO2) synthesized by solvothermal, the IR cutoff performance of coatings has been shown to greatly improve as compared to using commercially available ATO nanoparticles. The optimal dopant level for ATO nanoparticles to have the best optical properties is examined and formulations of ATO/silica coatings are investigated for their IR cutting performance. In purview of the effort to achieve sustainable development, retrofitting the existing buildings with cost efficient IR cutting coating for the windows should be one of the ways towards a greener Singapore.