British Journal of Research Open Access

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Biogenical synthesisn of silver nanoparticles from green algae (Botryococcus braunii) and its catalytic behaviour for the synthesis of Benzimidazoles

Tejpal Singh Chundawat

In recent research interest metal nanoparticles have been synthesized extensively for a variety of applications and gaining enormous research attention in various areas such as chemistry, physics, life science, material science, medical science, nanomedicine and engineering due to size and shape tune able properties. Nanoparticles posses unique optical, magnetic, electronic and catalytic properties with their distinctive feature of size and shape. The chemical synthesis of metal nanoparticles requires chemical reducing agent to convert metal ion to metal nanoparticles and involves undesired use of aggressive and hazardous chemicals. Relative to these chemical syntheses, methods of green synthesis that use ecofriendly compounds as reducing agents in place of hazardous and aggressive chemicals. The emphasis on green synthesis of metal nanoparticles and its catalytic property for a maximum societal benefit with minimal impact on the ecosystem.

In this present study we demonstrated that the aqueous extract of green alga B.braunii can reduces silver ions into silver nanoparticles and have the potential to stabilize them. The novel silver nanoparticles were explored and found efficient for reduction of 2-nitroaniline and subsequently in synthesis of 2-arylbenzimidazoles. This provides a greener catalytic approach for synthesis of silver nanoparticles from alga B.braunii and its application in a newer synthetic approach for biocatalytic, one pot conversion of 2-nitroaniline to biologically important 2-arylbenzimidazoles.

Synthesized nanoparticles and derivatives of benzimidazoles were characterized by UV, FTIR, X-ray and SEM.