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Biosynthesis and Stabilization of Nanosilver Using Houttuynia Extract for Degradation of Azo Acid and Mordant Dyes

Year: 2024

Type: article

Abstract: Silver nanoparticles (AgNPs) are promising candidates for environmental remediation due to their exceptional catalytic properties. However, their tendency to aggregate during formation undermines their stability, posing challenges for large-scale production. This study presents a one-step biosynthesis method of AgNPs using Houttuynia plant (Houttugniae herba) extract, where the plant biomolecules act as both reducer and stabilizer. The bioreduction kinetics were meticulously optimized using the one-factor-at-a-time (OFAT) approach, establishing the ideal synthesis conditions as follows: 1.0 mM AgNO3, 0.1 ml Houttuynia plant extract, heated at 80 °C for 45 minutes, with the medium at pH 9. Morphological characterization revealed the formation of spherical, well separated, and highly crystalline (d-spacing = 0.237 nm) AgNPs with an average particle size of 7.756 ± 2.372 nm. The synthesized AgNPs exhibited remarkable catalytic activity in reducing azo dyes, achieving degradation rates of approximately 98% for both acid red 1 (AR1) and mordant blue 9 (MB9) within 4 and 20 minutes, respectively. This eco-friendly and cost-effective method can be an excellent alternative for treating industrial effluents.

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/matecconf/202440501001/pdf

Authors: Guobin Zhang, Mohammad Jahidul Alam, Moyinul Islam, Huihong Liu, Sakil Mahmud

Institutions: Southeast University, University of Chittagong, Wuhan Textile University, Lincoln University - Pennsylvania

Language: English

Topic: Nanoparticles: synthesis and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: green

Funder: Hubei Provincial Department of Education