Photothermal Effectiveness of Magnetite Nanoparticles: Dependence upon Particle Size Probed by Experiment and Simulation

Abstract

The photothermal effect of nanoparticles has proven efficient for driving diverse physical and chemical processes; however, we know of no study addressing the dependence of efficacy on nanoparticle size. Herein, we report on the photothermal effect of three different sizes (5.5 nm, 10 nm and 15 nm in diameter) of magnetite nanoparticles (MNP) driving the decomposition of poly(propylene carbonate) (PPC). We find that the chemical effectiveness of the photothermal effect is positively correlated with particle volume. Numerical simulations of the photothermal heating of PPC supports this observation, showing that larger particles are able to heat larger volumes of PPC for longer periods of time. The increased heating duration is likely due to increased heat capacity, which is why the volume of the particle functions as a ready guide for the photothermal efficacy.

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Document Details

Document Type
Technical Report
Publication Date
May 22, 2018
Accession Number
AD1103624

Entities

People

  • Benjamin J. Lear
  • Jonathan D. Schultz
  • Robert J. Johnson

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Carbonate Esters
  • Chemical Synthesis
  • Chemistry
  • Decomposition
  • Energy
  • Heat Capacity
  • Heat Transfer
  • Materials
  • Materials Processing
  • Materials Science
  • Metallic Nanoparticles
  • Nanoparticles
  • Nanotechnology
  • Optical Properties
  • Particle Size
  • Particles
  • Thermal Conductivity

Readers

  • Computational Modeling and Simulation
  • Nanocomposite Materials Science
  • Psychological Intervention/Treatment for Stress, Anxiety, PTSD, and Related Emotional and Cognitive Health Symptoms.

Technology Areas

  • Biotechnology