Growing Metal Nanoparticles by Enzymes

Abstract

Enzymes act as catalysts for the growth of metallic nanoparticles (NPs). The enzyme‐mediated growth of metallic NPs provides a general means to follow biocatalyzed transformations, and to develop optical sensors for different substrates such as glucose, L‐DOPA, alcohols, lactate or nerve gas analogs. Enzymes modified with Au NPs act as biocatalysts for the fabrication of metallic nanowires. The dip‐pen nanolithography of NP‐functionalized enzymes on Si surfaces yields biocatalytic templates that enable the orthogonal evolution of nanowires consisting of different metals.

Synthesis of silver nanoparticles using leaves of Catharanthus roseus Linn. G. Don and their antiplasmodial activities

“…Biological methods of nanoparticle synthesis using microorganisms [15][16][17] , enzymes [18] , fungus [19] , and plants or plant extracts [20][21][22][23][24] have been suggested as possible ecofriendly alternatives to chemical and physical methods. Sometimes the synthesis of nanoparticles using plants or parts of plants can prove advantageous over other biological processes by eliminating the elaborate processes of maintaining microbial cultures [20] .…”

Modulation of hepatotoxicity, DNA fragmentation and gene expression of Solanum nigrum leaves extract in rats treated with silver nanoparticles

“…Therefore, during the last years researches have used the biological systems for the synthesized of nanoparticle (Tsibakhashvili et al, 2010) using microorganisms, enzyme and plant or plant extract as alternatives methods (Nair and Pradeep, 2002). Moreover, the biosynthesis of AgNPs by plant surpasses the other biological methods (Willner et al, 2006). The green synthesis of AgNPs using the leaves broth of Argimone maxicana produced particles sized of 20 nm effective against many bacterial and fungal pathogens (Khandelwal et al, 2010).…”

Short-time preparation and electrochemical properties of a single layer of tetraoctylammonium bromide capped Au nanoparticles on dithiol self-assembled monolayer-modified Au electrode

“…It is well established that AuNPs immobilized on electrode surfaces exhibit interesting electrochemical properties [1][2][3][4]. The distinct electrochemical properties of AuNPs were demonstrated by several electroanalytical applications including electrocatalysis [5], biosensors [6], and protein electrochemistry [7]. Three strategies have been commonly used to immobilize AuNPs on electrode surfaces.…”