Fig. 8From: A New Phase Change Material Based on Potassium Nitrate with Silica and Alumina Nanoparticles for Thermal Energy StorageEDX mapping. Nanofluids based on KNO3 with 1.0 wt.% of a-b silica (Si, red), c-d alumina (Al, red), e-g silica-alumina (Si, green; Al, red) nanoparticlesBack to article page