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Solar‐Light‐Driven Photocatalytic Activity of Novel Sn@C‐Dots‐Modified TiO 2 Catalyst
Author(s) -
Kumar Vijay Bhooshan,
Perkas Nina,
Porat Ze'ev,
Gedanken Aharon
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701375
Subject(s) - photocatalysis , materials science , photodegradation , titanium dioxide , tin dioxide , catalysis , chemical engineering , nanocomposite , composite number , quantum dot , tin , nanoparticle , nanotechnology , composite material , chemistry , metallurgy , organic chemistry , engineering
The photocatalytic activity of titanium dioxide (TiO 2 ) has already been investigated and compared with that of other materials. The main goal of the current study is to functionalize TiO 2 with tin‐doped carbon dots (Sn@C‐dots/TiO 2 ) and explore the activity of this composite as a photocatalyst for the photodegradation of dye molecules. The new composite Sn@C‐dots/TiO 2 was prepared by a two‐step sonochemical reaction: a) Formation of Sn@C‐dots by ultrasonic irradiation of molten tin immersed in polyethylene glycol at 260 °C; b) Addition of TiO 2 and further sonication to induce the adhesion of the Sn@C‐dots on the surface of the TiO 2 . The resulting composite was examined as a photocatalyst for the photodegradation of methylene blue and crystal violet under solar radiation and was found to exhibit better activity than commercial TiO 2 or C‐dots/TiO 2 . Doping C‐dots with Sn and making hybrid Sn@C‐dots/TiO 2 nanocomposites opens a new type of photocatalytic materials.