Chitosan-mediated synthesis of flowery-CuO, and its antibacterial and catalytic properties

Gownolla Malegowd Raghavendra, Jeyoung Jung, Dowan Kim, Jongchul Seo

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In the current investigation, CuO with a flower-like morphology has been successfully synthesized in situ in a chitosan medium (0.0015 g mL−1) from copper nitrate (Cu(NO3)2·3H2O) and ammonia solution via a facile microwave-induced method. The as-prepared CuO was characterized by SEM, TEM, EDX, XRD, FTIR and TGA. The antibacterial activity of the flower-CuO against Escherichia coli was examined by analyzing colony forming units, and it was proved that the flower-CuO was able to kill >99% bacteria. Further, the flower-CuO exhibited excellent catalytic activity towards the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH4. The reaction kinetics followed a pseudo-first-order rate law with a rate constant of 0.183 min−1. To the best of our knowledge, this is the first time that copper oxide with the flower-like morphology has been synthesized by using a chitosan solution.

Original languageEnglish
Pages (from-to)78-84
Number of pages7
JournalCarbohydrate Polymers
Volume172
DOIs
Publication statusPublished - 2017 Sep 15

Fingerprint

Chitosan
Copper oxides
Ammonia
Reaction kinetics
Nitrates
Escherichia coli
Copper
Energy dispersive spectroscopy
Rate constants
Catalyst activity
Bacteria
Microwaves
Transmission electron microscopy
Scanning electron microscopy
4-nitrophenol
4-aminophenol
Nitrophenols

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Raghavendra, Gownolla Malegowd ; Jung, Jeyoung ; Kim, Dowan ; Seo, Jongchul. / Chitosan-mediated synthesis of flowery-CuO, and its antibacterial and catalytic properties. In: Carbohydrate Polymers. 2017 ; Vol. 172. pp. 78-84.
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Chitosan-mediated synthesis of flowery-CuO, and its antibacterial and catalytic properties. / Raghavendra, Gownolla Malegowd; Jung, Jeyoung; Kim, Dowan; Seo, Jongchul.

In: Carbohydrate Polymers, Vol. 172, 15.09.2017, p. 78-84.

Research output: Contribution to journalArticle

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