Photothermal response of plasmonic nanofillers for membrane distillation
- 16 March 2020
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 152 (11), 114102
- https://doi.org/10.1063/1.5139291
Abstract
Light-to-heat conversion in plasmonic nanoparticles (NPs) inside polymeric membranes is beneficial for improving the efficiency of membrane distillation for seawater desalination. However, the physical mechanisms ruling photothermal membrane distillation are unclear yet. Here, we model the plasmonic photothermal light-to-heat conversion from Ag, Au, and Cu nanofillers in polymeric membranes for membrane distillation. Photothermal effects in the cases of isolated metallic NPs and their assembly are investigated considering size effects and excitation sources. The increasing content of metallic NPs improves the efficiency of the light-to-heat conversion. For a polymeric membrane, filled with 25% Ag NPs, our model well reproduces the experimental temperature increase of 10 K. Specifically, we find that Ag NPs with a radius of around 30–40 nm are favorite candidates for membrane heating with excitation energy in the visible/near-UV range. The incorporation of a term associated with heat losses into the heat transfer equation well reproduces the cooling effect associated with vaporization at the membrane surface. Compared to Ag NPs, Au and Cu NPs show a broadened absorption cross section and their resonance has a nonlinear behavior with varying the excitation energy, better matching with sunlight radiation spectrum.This publication has 51 references indexed in Scilit:
- Solar Photothermal Disinfection using Broadband-Light Absorbing Gold Nanoparticles and Carbon BlackEnvironmental Science & Technology, 2017
- Unique Roles of Gold Nanoparticles in Drug Delivery, Targeting and Imaging ApplicationsMolecules, 2017
- Investigation of the localized surface plasmon effect from Au nanoparticles in ZnO nanorods for enhancing the performance of polymer solar cellsNanoscale, 2014
- Harnessing the collective properties of nanoparticle ensembles for cancer theranosticsNano Research, 2014
- Plasmonics for photovoltaic applicationsSolar Energy Materials and Solar Cells, 2010
- SERS‐Coded Gold Nanorods as a Multifunctional Platform for Densely Multiplexed Near‐Infrared Imaging and Photothermal HeatingAdvanced Materials, 2009
- Gold nanorod assisted near-infrared plasmonic photothermal therapy (PPTT) of squamous cell carcinoma in miceCancer Letters, 2008
- Temperature-sensitive hydrogels with SiO2–Au nanoshells for controlled drug deliveryJournal of Controlled Release, 2007
- The Role of Metal Nanoparticles in Remote Release of Encapsulated MaterialsNano Letters, 2005
- Nanoshell-mediated near-infrared thermal therapy of tumors under magnetic resonance guidanceProceedings of the National Academy of Sciences of the United States of America, 2003