Sunlight-Driven Photothermal Effect of Composite Eggshell Membrane Coated with Graphene Oxide and Gold Nanoparticles

Ling Wang,Bin Tang,Ji Zhou,Wu Chen,Hai Zhao,Jinfeng Wang

doi:10.3390/app9204384

Ling Wang, Bin Tang + Show 4 more

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https://doi.org/10.3390/app9204384

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Abstract

Eggshell membrane (ESM), which consists of unique interwoven shell membrane fibers, provides a unique supporting platform for functional nanoparticles in catalysis and sensing. This work reports a novel strategy for fabricating sunlight-driven photothermal conversion composite membranes by loading graphene oxide (GO) and gold nanoparticles (AuNPs) on the three-dimension (3D) network structured eggshell membrane. Surface morphologies and chemical elements were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. High photothermal conversion under simulated sunlight irradiation, which may be caused by the synergistic effect of GO and AuNPs, was achieved by coating both GO and AuNPs onto ESM. The temperature of ESM modified with AuNPs, and then GO increased from 26.0 °C to 49.0 °C after 10 min of light irradiation. Furthermore, the nanoscaled GO and AuNPs could add benefit to the heating localization of the obtained composite membrane. It is expected this biocompatible ESM modified with GO and AuNPs would have great potential in drug release and photothermal therapy applications.

Highlights

Sunlight-based photothermal materials have attracted increasing attention due to the growing global demands for energy and incumbent environmental concerns
The color of Eggshell membrane (ESM) changed from white to brown–yellow after graphene oxide (GO) nanosheets were coated on the surface of ESM (GO/ESM in Figure 1), indicating that GO nanosheets were combined effectively with ESM
It should be noted that the color of the GO coated ESM (GO/ESM) became darker during the in situ heating synthesis of AuNPs, implying that GO may be reduced by heat in the presence of ESM, which is similar to the GO reduction on

Summary

Introduction

Sunlight-based photothermal materials have attracted increasing attention due to the growing global demands for energy and incumbent environmental concerns. Plasmonic materials, including gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs), show particular light absorbance at certain wavelengths. These plasmonic materials have been used as photothermal elements in many research works due to their unique localized surface plasmon resonance (LSPR) properties, which are sensitive to the particle shape, size, and metal materials. At a certain frequency, leads to conduction electrons locally oscillating around nanoparticles. This phenomenon of excitation of surface plasmons by light irradiation is known as LSPR [5]. The plasmonic effect of AuNPs has been utilized to accelerate water evaporation and harvest sunlight energy through LSPR-based photothermal conversion [6].

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