Nanocrystalline cellulose derived from melon seed shell (Citrullus colocynthis L.) for reduction and stabilization of silver nanoparticles: Synthesis and catalytic activity

Carbohydrate Polymer Technologies and Applications

Vashen Moodley¹  Kehinde N. Awokoya²  Adeola A. Ibikunle²  Oseyemi O. Olubomehin²  Odunayo C. Atewolara-Odule²  Werner E. van Zyl²  Abdulrazaq O. Ogunmoye³  Nurudeen O. Sanyaolu⁴  Segun A. Ogundare⁵  James F. Amaku⁵ 

[1] Department of Chemical Sciences, Olabisi Onabanjo University, P. M. B. 2002, Ago-Iwoye, Nigeria;Department of Chemical Sciences, Olabisi Onabanjo University, P. M. B. 2002, Ago-Iwoye, Nigeria;Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Nigeria;Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria;School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa;

关键词: Melon seed shell;    Nanocrystalline cellulose;    Ammonium persulphate;    Silver nanoparticles;    Nitrobenzene reduction;    Catalysis;   

DOI  :  

来源: DOAJ

【 摘 要 】

Melon seed shells (MSS) are a hazard to the environment as they host disease vectors. To alleviate the effect, we explored melon seed shells (MSS) as a new source of nanocrystalline cellulose (NCC) with reducing- and stabilizing capacity for the synthesis of silver nanoparticles (AgNPs). The isolation of NCC from discarded MSS served the dual purpose of a reducing- and stabilizing agent in the synthesis of AgNPs. The isolated needle-like crystals (MSS-NCC) had a mean length 204 nm, width 7 nm and aspect ratio 30. The NCC had crystallinity index of 94% with surface rich in –OH and –COOH functionality. The obtained AgNPs covered the surface of the MSS-NCC and catalysed the reduction of nitrobenzene to aniline using NaBH4. The process of the reduction monitored via UV-vis spectroscopy was completed within 12 min. with a rate constant 0.04 min−1 as revealed by the kinetic study.

【 授权许可】

Unknown