Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal PROSIDING SEMINAR KIMIA JURNAL ATOMIK
Az Zahra, Upi Fathimah
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
SYNTHESIS OF SILVER NANOPARTICLES USING CHEMICAL REDUCTOR: MINI REVIEW Az Zahra, Upi Fathimah; Panggabean, Aman Sentosa; Hindryawati, Noor
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Silver nanoparticles are particles whose range ranges from 1-100 nm. Formation of metal nanoparticles can be done by top down (physics) and bottom up (chemistry) methods. Chemical reduction is a very commonly used method because it is relatively simple, easy and effective to produce AgNPs. Synthesis of silver nanoparticles was carried out by forming a colloidal silver solution using the silver nitrate reduction method with a chemical reducing agent. Some chemical reducing agents that can be used are ascorbic acid, citric acid, hydrazine and NaBH4. In addition, a stabilizing agent is needed to prevent agglomeration of the formed nanoparticles. The purpose of this article review is to determine the characteristics of silver nanoparticles synthesized using chemical reducing agents based on UV-Vis, PSA, TEM and SEM spectrophotometer data. The method used is the method of literature review. The results show that the synthesis of silver nanoparticles by reducing silver nitrate with sodium borohydride and poly acrylic acid (PAA) stabilizer produces an average size of 71.8 nm silver particles, the PVP stabilizer produces an average size of 96.0 nm silver particles, synthesis of silver nanoparticles using reducing agents ethylene glycol and polyvinylpyrrolidone (PVP) produces an average size of silver particles of less than 10 nm, synthesis of silver nanoparticles using reducing agents hydrazine hydrate and polyvinyl alcohol produces an average size of silver particles of 10-60 nm. Keywords: silver nanoparticle, NaBH4, stabilizer
SINTESIS DAN KARAKTERISASI NANOPARTIKEL PERAK TERMODIFIKASI KITOSAN MENGGUNAKAN REDUKTOR NaBH4 Az Zahra, Upi Fathimah; Hindryawati, Noor; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 9 No 2 (2024)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v9i2.1406

Abstract

The research about synthesis of chitosan-modified silver nanoparticles using NaBH4 reducing agents has been carried out. This research aims to determine the optimum AgNO3 concentration, optimum pH and optimum stirring time. The chitosan-modified silver nanoparticles obtained were then characterized using a UV Vis Spectrophotometer, Particle Size Analyzer and Transmission Electron Microscopy instruments. The results of measurements using a UV-Vis Spectrophotometer, the synthesis of chitosan-modified silver nanoparticles was obtained was obtained at the optimum condition of AgNO3 concentration of 3x10-3 M, pH 4 and the optimum stirring time was 2 hours. The formation of AgNPs is characterized by the presence of typical absorption peaks at maximum wavelengths of 402 nm-434 nm. Keywords: Silver Nanoparticles, Chitosan, NaBH4
Co-Authors Aman Sentosa Panggabean Noor Hindryawati, Noor