Photocatalytic degradation efficiency of Rhodamine-B for CuO/CdO nanosheets attained through simple co-precipitation method

[Display omitted] •Synthesis of CuO/CdO nanocomposites by coprecipitation method.•The surfactant Triton X-100 blend with CuO/CdO resulting hexagonal structure with reduction in particle size.•The photocatalytic activity of CuO/CdO against Rhodamine-B have the degradation efficiency 94%.•The pH value...

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Bibliographic Details
Published inResults in Chemistry Vol. 6; p. 101169
Main Authors Arulkumar, E., Santhosh Shree, S., Thanikaikarasan, S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2023
Elsevier
Subjects
CuO/CdO
Dye degradation
Photocatalysis
TEM
XRD
Dye degradation
XRD
CuO/CdO
TEM
Photocatalysis
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Summary:[Display omitted] •Synthesis of CuO/CdO nanocomposites by coprecipitation method.•The surfactant Triton X-100 blend with CuO/CdO resulting hexagonal structure with reduction in particle size.•The photocatalytic activity of CuO/CdO against Rhodamine-B have the degradation efficiency 94%.•The pH value around 6.0 have higher degradation efficiency 99.88%. In the present investigation, the growth of CuO/CdO nanosheets by simple coprecipitation method and characterized by XRD, SEM with EDX, TEM, UV–visible and PL. The incorporation of the non-ionic surfactant Triton X-100 blend with CuO/CdO resulted in hexagonal shaped grains with a nanoporous structure. The pristine CuO and CdO display monoclinic and cubic phases, respectively, whereas the CuO/CdO exhibits a combination of two phases, as proven by XRD analysis. According to TEM analysis the CuO/CdO composite particle size was reduced in the range between 20 and 50 nm resulting, the bandgap value is decreased around 1.26 eV due to size effect. The photocatalytic activity against Rhodamine-B (RhB) showed a 94 % degradation efficiency as compared to pristine CuO (71.42 %) and CdO (77.83 %). Furthermore, the CuO/CdO nanocomposite catalyst dosage increasing the degradation efficiency was found to be 97.62 %. Although the nitration process is more efficient at pH 6, the degradation efficiency for CuO, CdO, and CuO/CdO was found to be 75.74, 85.96 %, and 99.88 % at pH 6. In acidic solution, the reusability of CuO/CdO was outstanding with a 95.80 % degradation efficiency after five successive cycles.
ISSN:2211-7156
2211-7156
DOI:10.1016/j.rechem.2023.101169