ArticleInternational journal of molecular sciences2012
Visible light-induced degradation of methylene blue in the presence of photocatalytic ZnS and CdS nanoparticles.
Article in International journal of molecular sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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Who cites it
35 citing papers in PubMed, 436 citations in OpenAlex.
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- A novel ZnS-CdS nanocomposite as a visible active photocatalyst for degradation of synthetic and real wastewaters.Scientific reports · 2023Article
- ZnO Nanostructures Doped with Various Chloride Ion Concentrations for Efficient Photocatalytic Degradation of Methylene Blue in Alkaline and Acidic Media.Molecules (Basel, Switzerland) · 2022Article
- Zeolites as Adsorbents and Photocatalysts for Removal of Dyes from the Aqueous Environment.Molecules (Basel, Switzerland) · 2022Article
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- Controlling the Wettability of ZnO Thin Films by Spray Pyrolysis for Photocatalytic Applications.Materials (Basel, Switzerland) · 2022Article
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
ZnS and CdS nanoparticles were prepared by a simple microwave irradiation method under mild conditions. The obtained nanoparticles were characterized by XRD, TEM and EDX. The results indicated that high purity of nanosized ZnS and CdS was successfully obtained with cubic and hexagonal crystalline structures, respectively. The band gap energies of ZnS and CdS nanoparticles were estimated using UV-visible absorption spectra to be about 4.22 and 2.64 eV, respectively. Photocatalytic degradation of methylene blue was carried out using physical mixtures of ZnS and CdS nanoparticles under a 500-W halogen lamp of visible light irradiation. The residual concentration of methylene blue solution was monitored using UV-visible absorption spectrometry. From the study of the variation in composition of ZnS:CdS, a composition of 1:4 (by weight) was found to be very efficient for degradation of methylene blue. In this case the degradation efficiency of the photocatalyst nanoparticles after 6 h irradiation time was about 73% with a reaction rate of 3.61 × 10-3 min-1. Higher degradation efficiency and reaction rate were achieved by increasing the amount of photocatalyst and initial pH of the solution.
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