Synthesis of CdS/CNT-TiO2 with a high photocatalytic activity in photodegradation of methylene blue
Source abstract
Abstract
Abstract Novel CdS/CNT-TiO 2 photocatalysts were synthesized by a simple chemical routine through the drop-wise addition of Na 2 S·5H 2 O solutions to cadmium acetate solutions containing purified multiwall carbon nanotubes (MWCNTs). The CdS/CNT materials obtained were treated with titanium (IV) n-butoxide to form CdS/CNT-TiO 2 composites which were characterized by N 2 adsorption, XRD, TEM, SEM, and energy-dispersive X-ray analysis. The composites were found to be porous, and the MWCNTs were homogenously dispersed in the composites without any apparent agglomeration of TiO 2 nanoparticles and CdS nanoparticles. The CdS/CNT-TiO 2 composites exhibited excellent activity for the degradation of methylene blue under UV and visible-light irradiation. This was attributed not only to the photocatalysis of the supported TiO 2 for the radical reaction and the adsorptivity of MWCNTs, but also to the introduction of the narrow-band gap semiconductor CdS that increases the transfer rate of photogenerated electrons through the surface of the MWCNTs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
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