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Extracellular biosynthesis of copper sulfide nanoparticles by Shewanella oneidensis MR-1 as a photothermal agent.

Abstract：

:Photothermal therapy (PTT) is a minimally invasive and effective cancer treatment method and has a great potential for innovating the conventional chemotherapy approaches. Copper sulfide (CuS) exhibits photostability, low cost, and high absorption in near infrared region, and is recognized as an ideal candidate for PTT. However, CuS, as a photothermal agent, is usually synthesized with traditional chemical approaches, which require high temperature, additional stabilization and hydrophilic modification. Herein, we report, for the first time, the preparation of CuS nanoparticles as a photothermal agent by a dissimilatory metal reducing bacterium Shewanella. oneidensis MR-1. The prepared nanoparticles are homogenously shaped, hydrophilic, small-sized (∼5nm) and highly stable. Furthermore, the biosynthesized CuS nanoparticles display a high photothermal conversion efficiency of 27.2% because of their strong absorption at 1100nm. The CuS nanoparticles could be effectively used as a PTT agent under the irradiation of 1064nm. This work provides a simple, eco-friendly and cost-effective approach for fabricating PTT agents.

journal_name

Enzyme Microb Technol

journal_title

Enzyme and microbial technology

authors

Zhou NQ,Tian LJ,Wang YC,Li DB,Li PP,Zhang X,Yu HQ

doi

10.1016/j.enzmictec.2016.04.002

subject

Has Abstract

pub_date

2016-12-01 00:00:00

pages

230-235

eissn

0141-0229

issn

1879-0909

pii

S0141-0229(16)30055-2

journal_volume

95

pub_type

杂志文章

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