Title of article :
Application of CdTe/CdS/ZnS core/multi-shell QDs as a high-performance nanocatalyst for degradation of methylene blue from water
Author/Authors :
Farahmandzadeh ، Farzad Department of physics - Science Faculty - Vali-E-Asr University of Rafsanjan , Ahmadibagheri ، Golnoosh Department of physics - Science Faculty - Vali-E-Asr University of Rafsanjan , Khoshghamat ، Ayda Department of physics - Science Faculty - Vali-E-Asr University of Rafsanjan , Molahosseini ، Elham Department of physics - Science Faculty - Yazd University , Molaei ، Mehdi Department of physics - Science Faculty - Vali-E-Asr University of Rafsanjan
Abstract :
The application of nanocatalysts for the removal of dyes from industries’ wastewater and effluents has attracted great attention these days. In this paper, CdTe/CdS/ZnS core/multi-shell quantum dots were used as a nanocatalyst for the degradation and removal of methylene blue, methylene orange, and rhodamine b dyes from water. The obtained results showed that CdTe/CdS/ZnS nanocatalyst had excellent ability for removal of methylene blue dye from water and after 60 min reaction time, methylene blue dye was completely degraded (100%). Also, the degradation percentage of rhodamine b and methylene orange dyes was obtained at about 80.2% and 55.2%, respectively. The radical scavenger experiment was used to study which active radicals play a key role in the photocatalyst process of CdTe/CdS/ZnS nanocatalyst with methylene blue dye and results showed that electrons play a key role in the degradation process. The successful formation of CdTe/CdS/ZnS core/multi-shell QDs was studied by XRD, EDS, PL, absorbance, and TEM analysis.
Keywords :
nanocatalyst , MB degradation , Wastewater treatment , CdTe , CdS , ZnS , core , multi-shell QDs
Journal title :
Progress in Physics of Applied Materials
Journal title :
Progress in Physics of Applied Materials
