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Title: One step, microwave assisted green synthesis of biocompatible carbon quantum dots and their composites with [α−PW{sub 12}O{sub 40}{sup 3−}] for visible light photocatalysis

We report a simple, rapid and green route for synthesis of fluorescent carbon quantum dots (CQDs) by microwave assisted pyrolysis method using polyleucine polymer (Boc-L-Leu-HEMA) as precursor and self-passivating agent. The as synthesized CQDs were found to possess low cytotoxicity, thus making them suitable candidates for bioimaging and bio-labelling. Moreover, nanocomposites of as prepared CQDs with [α−PW{sub 12}O{sub 40}{sup 3−}] polyoxometalate were synthesized and were shown to possess excellent photocatalytic properties under visible light towards degradation of organic dye pollutants. Based on the control experiments, a suitable mechanism has been proposed to explain the remarkable photoactivity of the CQD/[α−PW{sub 12}O{sub 40}{sup 3−}] composites.
Authors:
; ; ; ; ;  [1]
  1. Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur-741252, W.B. (India)
Publication Date:
OSTI Identifier:
22269459
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON; COMPOSITE MATERIALS; FLUORESCENCE; MICROWAVE RADIATION; ORGANIC POLYMERS; PHOTOCATALYSIS; PYROLYSIS; QUANTUM DOTS; SYNTHESIS; VISIBLE RADIATION