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َAbdolraouf Samadi-Maybodi

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Faculty of Chemistry
Address:
Phone: 011-35302396

Research

Title
Preparation of Mesoporous SBA-15 Supported CdS Quantum Dots and Its Application for Photocatalytic Degradation of Organic Pollutants in Aqueous Media
Type
JournalPaper
Keywords
Quantum dot · SBA-15 · Nanocomposite · Photocatalytic degradation · Mechanism
Year
2018
Journal Journal of Inorganic and Organometallic Polymers and Materials
DOI
Researchers َAbdolraouf Samadi-Maybodi ، Mohammad Sadeghi

Abstract

Photocatalytic degradation of pollutants based on semiconductor quantum dots (QDs) can be applied in wastewater purification methods. However, application of free QDs was associated with some difficulties, such as oxidation and agglomeration of QDs and difficulties in separation. As a solution to these problems, we have proposed the production of mesoporous SBA-15 supported CdS quantum dots as a more stable photo-catalyst. The efficiency of these prepared nanocomposites was examined for photocatalytic degradation of Alizarin, as an organic pollutant. Results demonstrated that the proposed material is a promising catalyst for photocatalytic degradation of dyes in wastewaters. The kinetic and adsorption isotherms of photocatalytic degradation process were also studied and a detailed mechanism proposed for degradation process. The proposed mechanism was studied using free radicals trapping experiments; results demonstrated that the ∙O− 2 radicals are active intermediates and have an important role in the photodegradation mechanism.