Photoresponse properties of green-assisted Fe3O4 nanoparticles supported activated carbon

The photoresponse properties of green synthesized Fe3O4 (gFe3O4) supported-activated carbon (AC/g-Fe3O4) were studied using a photocurrent characterization approach. Preliminary UV–Vis analysis suggested a reduction in the band gap energy when activated carbon is incorporated into gFe3O4 nanoparticl...

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Bibliographic Details
Published in:Diamond and related materials 2024-11, Vol.149, p.111584, Article 111584
Main Authors: Idisi, David O., Aigbe, Uyiosa O., Chilukusha, Daniel, Mwakikunga, Bonex W., Asante, Joseph K.O.
Format: Article
Language:English
Subjects:
Activated carbon
Green synthesis
Iron oxide
Photoconductivity
Photosensitivity
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Summary:The photoresponse properties of green synthesized Fe3O4 (gFe3O4) supported-activated carbon (AC/g-Fe3O4) were studied using a photocurrent characterization approach. Preliminary UV–Vis analysis suggested a reduction in the band gap energy when activated carbon is incorporated into gFe3O4 nanoparticles (2.61 → 1.57 eV). The current-voltage characteristics indicate semiconductor features for both gFe3O4 and AC/gFe3O4 nanoparticles. The photodetector measurements indicate a significantly enhanced response for AC/gFe3O4 and can be attributed to increased rectification and photogenerated carriers emanating from the activated carbon incorporation. The study proposes AC/gFe3O4 nanocomposite as a novel material that can be used for the fabrication of photodetectors and other related optoelectronic devices. [Display omitted] •Fe3O4 nanoparticles was synthesized via green plant extract from Ocimum Gratissimum.•Highly crystallized microstructure property for green assisted Fe3O4 nanoparticles.•Reduction optical band gap of Fe3O4 when activated carbon was incorporated.•Weakly doped p-type semiconductor features were observed for gFe3O4 nanoparticles.•Significant increase in photosensitivity of gFe3O4 nanoparticles when supported activated carbon.
ISSN:0925-9635
DOI:10.1016/j.diamond.2024.111584