What is it about?
We report, for the first time, a facile one-pot approach for the high-yield fabrication of AgCl NCs with perfect high-index faceted TPH and concave HOH structures, which are enclosed by 24 high-index {311} facets and 48 high-index {15 5 2} facets, respectively.
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Why is it important?
As far as we know, such unconventional polyhedral constructions have only appeared in studies about noble metal nanocrystals, which have not been reported in semiconductor photocatalysts.Depending on the specific ionic liquid surfactant PDDA and an appropriate concentration of AgNO3 precursor in hot EG solution, high-index faceted AgCl NCs were formed, and the derived products such as octahedral AgCl NCs enclosed by {111} facets, disordered AgCl or Ag based nanorods and nanoparticles (NPs) were produced as well.Through photocatalytic tests, it can be found that both TPH and concave HOH AgCl NCs exhibit a much higher photocatalytic activity than those with octahedral morphologies in the degradation of the organic dye methyl orange (MO) under sunlight.
Perspectives
High-index faceted trapezohedral (TPH) and concave hexoctahedral (HOH) AgCl semiconductor nanocrystals (NCs) were synthesized for the first time in high yield in our publication. As one class of the functional nanomaterials, our TPH and concave HOH AgCl NCs exhibit much higher photocatalytic activity than traditional low-index faceted nanocrystals
Mr Haibin Zhang
Institute of Optics and Electronics, Chinese Academy of Sciences
Read the Original
This page is a summary of: One-pot synthesis of high-index faceted AgCl nanocrystals with trapezohedral, concave hexoctahedral structures and their photocatalytic activity, Nanoscale, January 2015, Royal Society of Chemistry,
DOI: 10.1039/c5nr02049b.
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