Cadmium sulfide nanostructures: influence of morphology on the photocatalytic degradation of erioglaucine and hydrogen generation

TitleCadmium sulfide nanostructures: influence of morphology on the photocatalytic degradation of erioglaucine and hydrogen generation
Publication TypeJournal Article
Year of Publication2019
AuthorsShenoy, S, Jang, E, Park, TJoo, Gopinath, CS, Sridharan, K
JournalApplied Surface Science
Volume483
Pagination696-705
Date PublishedJUL
Type of ArticleArticle
ISSN0169-4332
KeywordsCadmium sulfide, Erioglaucine, Hydrogen evolution, Nanostructures, Photocatalysis
Abstract

Size and shape of inorganic materials are known to have great effects on their physical and chemical properties. Here, for the first time we report the visible light driven photocatalytic degradation of erioglaucine - a stable organic dye molecule in the presence of chemically synthesized nanoscale CdS with 1D (nanorods), 2D (nanosheets) and 3D (hierarchical) morphology. Visible light driven photocatalytic degradation efficiency of both 1D and 3D CdS in the removal of erioglaucine are identical. Surprisingly, with 5 min of sonication, the highly crystalline 3D CdS stacked with many thin nanowires containing numerous active surface sites exhibited fourfold enhanced photodegradation efficiency in comparison to 1D and 2D CdS. Scavenger studies revealed that electrons and superoxide radicals are primary reactive species involved in the photodegradation of erioglaucine, while cyclic photodegradation studies revealed the good stability of 3D CdS against photocorrosion. Further, the photocatalytic hydrogen evolution studies also revealed the excellent activity of 3D CdS in comparison to 1D and 2D CdS. Thus, we find that the morphology indeed influences the photocatalytic activity. These results reveal that 3D CdS nanostructures investigated in the present work are efficient photocatalysts that could be fine-tuned for both environmental remediation and hydrogen generation applications.

DOI10.1016/j.apsusc.2019.04.018
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

5.155

Divison category: 
Catalysis and Inorganic Chemistry

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