ItemArticle

Natural biotic polymer bombyx mori silk fibroin for gold nanoparticles: Fabrication, characterisations and application as colorimetric ammonia detection

Title
Natural biotic polymer bombyx mori silk fibroin for gold nanoparticles: Fabrication, characterisations and application as colorimetric ammonia detection
Creator
Rayaraddi, Ranjana; Babukutty, Blessy; Meti, Sunil; Mozetic, Miran; Sadasivan, Sreekala Meyyarapallil; Maria, Hanna Joshep; Oluwafemi, Oluwatobi Samuel; Thomas, Sabu
Description
Gold nanoparticles (AuNPs) were fabricated using a cost-effective and environmentally benign method, using silk fibroin (SF) as a stabilizing and reducing agent. As a natural, renewable protein polymer, silk fibroin can reduce and stabilize material as well as provide shape-tailoring agent. This resulted bio-polymer with gold nanoparticles was biodegradable, biocompatible, and very stable. Au ions are proficiently reduced to neutral Au atoms by silk fibroin, which governs the size, shape, and distribution of the nanoparticles and, consequently, their optical characteristics. The fabricated nanoparticles are very well characterized using a set of advanced analytical techniques that include UV-Vis Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Fluorescence Spectroscopy (FL). The sensing performance of ammonia in aqueous ammonia using the SF-AuNPs is presented herein based on an optical sensing approach utilizing surface plasmon resonance (SPR). It is obvious from the results that the materials synthesized have exhibited some unique plasmonic properties due to the interaction between silk fibroin and gold surfaces, hence enhanced sensitivity in colorimetric detection. The AuNPs acted as an ammonia optical sensor with a detected limit of about 1 parts per billion (ppb), very outstanding performance. Ammonia and AuNPs interact to cause a change in their surface plasmon resonance simple rapid and low-cost to realize, eco-friendly, and can find applications towards environmental monitoring and biomedical research fields for ammonia detection. 2026 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license. http://creativecommons.org/licenses/by-nc-nd/4.0/
Source
Next Materials;Volume;12;Issue;;Article No.;102172;
Date
01-01-2026
Publisher
Elsevier B.V.
Subject
Ammonia detection; Biopolymer; Bombyx mori cocoons; Gold nanoparticles; Silk fibroin
Coverage
Rayaraddi R., International and Interuniversity Centre for Nanoscience and Nantechnology (IIUCNN), Mahatma Gandhi University, Kottayam, 686560, India, Department of Physics, RNSIT, Karnataka, Bengaluru, 580098, India; Babukutty B., International and Interuniversity Centre for Nanoscience and Nantechnology (IIUCNN), Mahatma Gandhi University, Kottayam, 686560, India; Meti S., Centre for Nano Science and Engineering (CeNSE), Indian Institute of Science (IISc), Karnataka, Bengaluru, 560012, India; Mozetic M., Department of Surface Engineering, Jozef Stefan Institute, Jamova cesta 39, Ljubljana, 1000, Slovenia; Sadasivan S.M., International and Interuniversity Centre for Nanoscience and Nantechnology (IIUCNN), Mahatma Gandhi University, Kottayam, 686560, India, School of Energy Materials, School of Polymer Science and Technology, School of Chemical Science, Mahatma Gandhi University, Kottayam, 686560, India; Maria H.J., International and Interuniversity Centre for Nanoscience and Nantechnology (IIUCNN), Mahatma Gandhi University, Kottayam, 686560, India, School of Energy Materials, School of Polymer Science and Technology, School of Chemical Science, Mahatma Gandhi University, Kottayam, 686560, India; Oluwafemi O.S., Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Johannesburg, Doornfontein, 2028, South Africa; Thomas S., International and Interuniversity Centre for Nanoscience and Nantechnology (IIUCNN), Mahatma Gandhi University, Kottayam, 686560, India, School of Energy Materials, School of Polymer Science and Technology, School of Chemical Science, Mahatma Gandhi University, Kottayam, 686560, India, Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Johannesburg, Doornfontein, 2028, South Africa, TrEST Research Park, TC-4/2322, GEM Building, Opposite College of Engineering Trivandrum, Kulathoor Rd, Sreekariyam, Kerala, Trivandrum, 695016, India, Department of Physics & Electronics, Christ (Deemed to be University), Bangalore, India
Rights
All Open Access; Gold Open Access
Relation
ISSN: 29498228;
Format
online
Language
English
Type
Article

Citation

Rayaraddi, Ranjana; Babukutty, Blessy; Meti, Sunil; Mozetic, Miran; Sadasivan, Sreekala Meyyarapallil; Maria, Hanna Joshep; Oluwafemi, Oluwatobi Samuel; Thomas, Sabu, “Natural biotic polymer bombyx mori silk fibroin for gold nanoparticles: Fabrication, characterisations and application as colorimetric ammonia detection,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22427.

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