Nitrogen-Doped Graphene Quantum Dot-Passivated δ-Phase CsPbI₃: A Water-Stable Photocatalytic Adjuvant to Degrade Rhodamine B.

ABSTRACT: Inorganic halide perovskite CsPbI₃ is highly promising in the photocatalytic field for its strong absorption of UV and visible light. Among the crystal phases of CsPbI₃, the δ-phase as the most aqueous stability; however, directly using it in water is still not applicable, thus limiting its dye photodegradation applications in aqueous solutions. Via adopting nitrogen-doped graphene quantum dots (NGQDs) as surfactants to prepare δ-phase CsPbI₃ nanocrystals, we obtained a water-stable material, NGQDs-CsPbI₃. Such a material can be well dispersed in water for a month without obvious deterioration. High-resolution transmission electron microscopy and X-ray diffractometer characterizations showed that NGQDs-CsPbI₃ is also a δ-phase CsPbI

SUBMITTER: Gu Y 

PROVIDER: S-EPMC10650061 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature