Опубликовано
2018-07-14
На SciPeople
2018-07-09
Журнал
Brightly Fluorescent Zinc-Doped Red-Emitting Carbon Dots for the Sunlight-Induced Photoreduction of Cr(VI) to Cr(III)
Brightly Fluorescent Zinc-Doped Red-Emitting Carbon Dots for the Sunlight-Induced Photoreduction of Cr(VI) to Cr(III) (ACS Omega)
The present finding deals with a simple and low-cost fabrication of surface-passivated, brightly fluorescent zincoxide-
decorated, red-emitting excitation-independent ultrafluorescent CDs, denoted as “CZnO-Dots”. Surface doping of zinc oxide
significantly improved the quantum yield by up to ∼72%, and these brightly fluorescent red-emitting CZnO-Dots have been
employed for the aqueous-phase photoreduction of 100 ppm hexavalent chromium(VI) to trivalent chromium(III) under the
influence of sunlight irradiation. The overall utility of the prepared CZnO-Dots can be ascertained by their recyclability over seven
cycles.
Публикация
The doped CD with inorganic salts can apparently form a
newer platform among the existing class of fluorescent optical
materials such as QDs and organic dyes. The doped-soluble CD
with a higher quantum yield value can provide solutions to
many newer emerging and existing problems. The aqueous
solutions of red-emitting brightly fluorescent CZnO-Dots with
excellent photostability could compete with the already existing
commercially available QDs and organic dyes for similar types
of applications. Such as related to the deeper penetration ability
of the fluorescent probe could directly relate the excellence of
instructive image analysis. Beyond these, brightly fluorescent
CZnO-Dots do have the potential for use as an excellent
photocatalytic material because of their working window, which
is situated in the lower wavelength region. Interestingly, further
studies could reveal a vast prospective future of these solublebrightly fluorescent CZnO-Dots in the field of photocatalysis and water treatment.
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