Synthesis of magnetically reusable Fe3O4 nanospheres-N, S co-doped graphene quantum dots enclosed CdSe its application as a photocatalyst

• Published in: Journal of industrial and engineering chemistry (Seoul, Korea) Vol. 75; pp. 230 - 237
• Main Authors: Khataee, Alireza, Sajjadi, Saeed, Hasanzadeh, Aliyeh, Joo, Sang Woo
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 25.07.2019; 한국공업화학회
• Subjects: Cadmium selenide; Graphene quantum dots; Magnetic nanocatalyst; Nanocomposites; Photocatalytic degradation; 화학공학; Cadmium selenide; Photocatalytic degradation; Nanocomposites; Graphene quantum dots; Magnetic nanocatalyst
• ISSN: 1226-086X; 1876-794X
• DOI: 10.1016/j.jiec.2019.01.048

[Display omitted] •Preparation of CdSe/NSG–Fe3O4 nanocomposites as a novel magnetic photocatalyst.•Enhancement of light absorption of CdSe to longer wavelength by enclosing with NSG.•Display adequate ferromagnetism of CdSe/NSG–Fe3O4 nanocomposites.•Higher photocatalytic degradation of CdSe/NSG–Fe3O4 nanocomposites than pure CdSe.•Exhibition excellent reusability property of CdSe/NSG–Fe3O4 up to ten cycles. Herein, Fe3O4 nanospheres attached on N, S co-doped graphene quantum dots (NSG) enclosed CdSe nanoparticles (CdSe/NSG–Fe3O4) is introduced as a magnetic high-performance photocatalyst for the heterogeneous photodegradation of methylene blue in aqueous solutions. The as-prepared CdSe/NSG–Fe3O4 nanocatalyst showed high stability and adequate ferromagnetism which makes it easy to be separated and reused. CdSe/NSG–Fe3O4 nanocomposites displayed enhanced photocatalytic activity for the degradation of organic compounds such as azo-dyes compared with CdSe nanoparticles. In view of these advantages offered by the prepared nanocatalyst, it has a high potential for the degradation of organic contaminants.