Sheet, spherical and plate-like chromium sesquioxide (Cr2O3) nanostructures synthesized via ionic surfactants assisted facile precipitation method

• Sheet, spherical and plate-like Cr2O3 nanostructures were prepared via simple method.
• Various ionic surfactants were controlling the size and morphology of the products.
• Proposed method has the important advantage of being simple, fast and cost effective.
• First time reporting different surfactants assisted Cr2O3 via precipitation method.

Chromium sesquioxide (Cr2O3) nanostructures, assisted by various ionic surfactants such as sodium dodecyl sulfate (SDS), poly ethylene glycol (PEG) and cetyl trimethyl ammonium bromide (CTAB), were successfully achieved by the facile precipitation method with the average particle size of 35.05, 38.12 and 40.28 nm, respectively. The sheet, spherical and plate-like nanostructures were confirmed by SEM studies and a possible growth mechanism of the nanostructures were proposed. The increasing trends of the band gap energy confirm the quantum confinement effect for the prepared samples. The strong UV and weak visible emissions in photoluminescence indicate the high purity and perfect crystallinity of the prepared samples.

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