Abstract:

A comprehensive chemical synthesis experiment, that is, hydrophobic modification of inorganic perovskite quantum dots and LED applications, is introduced in this article. The SiO₂ aerogel was prepared with tetraethyl orthosilicate as the raw material, and the hydrophobicity and toughness of SiO₂ aerogel were enhanced by trimethylchlorosilane and mullite fibers, respectively. Finally, CsPbX₃@SiO₂ aerogel composites were obtained by adsorption of inorganic perovskite quantum dots on hydrophobic SiO₂ aerogel. The successful modification of the SiO₂ aerogel was characterized by contact angle, infrared spectroscopy and X-ray diffraction, and the LED devices were fabricated. This experiment involves synthesis, characterization, and application of materials. It can be used as a comprehensive chemistry experiment for undergraduates majoring in chemistry and applied chemistry, which helps to improve students' scientific literacy and stimulate their interest in scientific research.

Key words: Perovskite quantum dots, Hydrophobic SiO₂ aerogel, Comprehensive chemical synthesis experiment, Instructional design