Synthesis of monodisperse spherical AgNPs by ultrasound-intensified Lee-Meisel method, and quick evaluation via machine learning

Bin Dong, Ning Xue, Guohao Mu, Mengjun Wang, Zonghua Xiao, Lin Dai, Zhixiang Wang, Dechun Huang, Hongliang Qian, Wei Chen

Research output: Journal PublicationArticlepeer-review

13 Citations (Scopus)

Abstract

Due to the high reactivity of Ag+ and uncontrolled growth process, the AgNPs produced by conventional Lee-Meisel method always exhibited larger particle size (30–200 nm) and polydisperse morphology (including spherical, triangular, and rod-like shape). An ultrasound-intensified Lee-Meisel (UILM) method is developed in this study to environmental-friendly and controllable synthesize monodisperse spherical AgNPs (~3.7 nm). Effects of Ag:citrate ratio (1:3 or 5:4), ultrasound power (300 to 1200 W) and reaction time (4 to 24 min) on the physical–chemical properties of AgNPs are investigated systematically. The transmission electron microscope (TEM) images, UV–Vis spectra, average particle size, zeta potential and pH value all demonstrate that crystallization and digestive ripening processes are facilitated in the presence of ultrasound irradiation. Therefore, both chemical reaction rate and mass transfer rate are enhanced to accelerate primary nucleation and inhibit uncontrolled particle growth, leading to the formation of monodisperse spherical AgNPs. Moreover, a machine learning approach - Decision Tree Regressor in conjunction with Shapley value analysis reveal the concentration of reactants is a more important feature affecting the particle.

Original languageEnglish
Article number105485
JournalUltrasonics Sonochemistry
Volume73
DOIs
Publication statusPublished - May 2021

Keywords

  • AgNPs
  • Lee-Meisel method
  • Sonocrystallization
  • Ultrasound-intensified digestive ripening

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering (miscellaneous)
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry

Fingerprint

Dive into the research topics of 'Synthesis of monodisperse spherical AgNPs by ultrasound-intensified Lee-Meisel method, and quick evaluation via machine learning'. Together they form a unique fingerprint.

Cite this