Influence of Blue Light Intensity on the Tannic Acid-Assisted Synthesis of Silver Nanowire

Jiranan Srisuwan; Supachok Tanpichai; Surat Kwanmuang; Junraprach Petchang; Anyaporn Boonmahitthisud

doi:10.4028/p-l3MQDY

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HomeJournal of Nano ResearchJournal of Nano Research Vol. 92Influence of Blue Light Intensity on the Tannic...

Influence of Blue Light Intensity on the Tannic Acid-Assisted Synthesis of Silver Nanowire

Abstract:

Silver nanowires (AgNWs) have garnered significant attention for their applications in flexible electronics, sensors, and transparent conductive films. Traditional synthesis methods are often energy-intensive and involve hazardous chemicals. However, this study investigated a green synthesis approach using tannic acid as reducing and stabilizing agents, focusing on the effect of light intensity on nanoparticle formation. AgNWs were successfully synthesized at room temperature via a light-assisted reduction method using tannic acid. Various intensities of blue light with a wavelength of 456-467 nm were applied to determine their influence on the morphology AgNWs. Light intensity was found to play a crucial role in controlling the nucleation and growth rate of AgNWs. Higher intensities accelerated the reduction of Ag⁺ (silver ion) to Ag⁰ (silver atom), promoting the formation of longer nanowires with increased diameters. Furthermore, these AgNWs demonstrated good stability after one month of storage, with zeta potential values of-20.0 ± 1.01 mV. This study demonstrated that blue light intensity significantly affected the morphology of AgNWs synthesized using tannic acid, providing a sustainable and tunable method for fabricating high-aspect-ratio nanowires under mild conditions.