Table sugar derived carbon dot—A promising green reducing agent

[Display omitted] •Green synthesis of carbon dots.•Excellent reducing efficiency of the system, as illustrated through Au(III) reduction.•Facile synthesis of nanogold within seconds.•Demonstration of catalytic activity of nanogold. In the present work, carbon dots derived from Table sugar are used a...

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Bibliographic Details
Published in:Materials research bulletin 2021-07, Vol.139, p.111284, Article 111284
Main Authors: V.A, Ansi, P, Sreelakshmi, Poovathinthodiyil, Raveendran, N.K, Renuka
Format: Article
Language:English
Subjects:
Luminescence
Nanogold
Nanostructures
Reducing agent
Sugar derived carbon dots
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Summary:[Display omitted] •Green synthesis of carbon dots.•Excellent reducing efficiency of the system, as illustrated through Au(III) reduction.•Facile synthesis of nanogold within seconds.•Demonstration of catalytic activity of nanogold. In the present work, carbon dots derived from Table sugar are used as a green reducing agent. Microwave assisted green synthesis is adopted for achieving bright cyan luminescent carbon dots from commercially available table sugar (sucrose). The particles are characterised by TEM analysis, XRD analysis, FTIR, XPS, Raman as well as photoluminescence spectral analyses. The system served as an environmentally benign reducing agent for Au(III) reduction. Gold nanoparticles of size ∼ 8.3 nm are achieved within seconds in presence of starch under mild heating. The system showed excellent stability for more than one month, and exhibited superior catalytic activity as evidenced by the hydrogenation of 4-nitro phenol.
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2021.111284