Chitosan as an active support for assembly of metal nanoparticles and application of the resultant bioconjugates in catalysis

Carbohydrate Research
Dongwei WeiWeiping Qian

Abstract

Metal nanoparticle-chitosan (NPs-chitosan) bioconjugates were formed by exposure of chitosan to an aqueous solution of metal salts under thermal treatment. The metal nanoparticles that are formed strongly bound to chitosan, which encouraged us to investigate their catalytic performance. It was demonstrated that the metal NPs-chitosan bioconjugates functioned as effective catalysts for the reduction of 4-nitrophenol in the presence of NaBH(4), which was monitored by means of spectrophotometry as a function of reaction time. The silver NPs-chitosan bioconjugates exhibited excellent catalytic activity and were reusable for up to seven cycles. In contrast, the gold NPs-chitosan catalyst displayed poor catalytic activity, even in the second cycle. A highlight of our approach is that chitosan simultaneously acts as an active support for the synthesis and assembly of nanoparticles, and the resultant bioconjugates bear the advantage of easy separation from the reaction medium.

References

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Citations

Oct 30, 2012·ACS Applied Materials & Interfaces·Bihua XiaLidong Li
Jul 23, 2014·Nanoscale Research Letters·Chih-Hui YangYung-Sheng Lin
Feb 14, 2016·Analytical and Bioanalytical Chemistry·Camila Alves de LimaAlmir Spinelli
Mar 9, 2019·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Nishita LucasChandrashekhar V Rode
Jan 7, 2016·Beilstein Journal of Nanotechnology·Mitra NaghdiJ R Valero
Dec 18, 2013·Bioinspiration & Biomimetics·Leming SunMingjun Zhang
Jan 22, 2013·Artificial Cells, Nanomedicine, and Biotechnology·Mustafa TürkSiyami Karahan
Nov 5, 2020·International Journal of Biological Macromolecules·Amarajothi DhakshinamoorthyPerumal Varalakshmi

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