Triana Dwi Restika, Ratnawulan R. Effect of Tetraethoxysilane Addition to Coconut Coir Ash Nanosilica on Morphology and Particle Size of SiO2-TiO2 Nanocomposite. Department of Physics, Universitas Negeri Padang [Internet]. 2024 Mar. 31 [cited 2024 May 20];2(1). Available from: https://jeap.ppj.unp.ac.id/index.php/jeap/article/view/48