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Facile synthesis of black phosphorus-zinc oxide nanohybrids for antibacterial coating of titanium surface

涂层 材料科学 光热效应 抗菌活性 壳聚糖 光热治疗 氧化物 光催化 化学工程 纳米材料 腐蚀 核化学 纳米技术 化学 冶金 细菌 有机化学 催化作用 生物 工程类 遗传学
作者
Sivakumar Beena,Duraiarasan Surendhiran,Byung‐Soo Chun,Srinivasan Arthanari,Vân Nam Tran,Hu Seung Lee,Hyun Wook Kang
出处
期刊:Colloids and Surfaces B: Biointerfaces [Elsevier]
卷期号:219: 112807-112807 被引量:9
标识
DOI:10.1016/j.colsurfb.2022.112807
摘要

Bacterial infection is a major complication associated with bioimplant materials, including titanium (Ti) based orthopedic joints and dental implants. Thus, the fabrication of Ti surfaces with antibacterial activity is highly important. Black phosphorus (BP) is a recently discovered promising two-dimensional semiconductor for various biomedical applications due to its tunable bandgap and physicochemical properties. The present study aimed to synthesize zinc oxide (ZnO) laden BP nanohybrids (NH) and their coatings on a Ti bioimplant surface for improving the antibacterial activities against pathogenic bacteria with and without near-infrared (NIR) light irradiation. Nanohybrids were produced with the slightly oxidized BP NF and electrostatically laden ZnO NP. The produced BP-ZnO NH was a NIR active nanomaterial (up to ∼1000 nm), demonstrating a photothermal effect against bacterial infection and showing improved activity by damaging the cell membrane towards S. aureus in comparison to E. coli. Ti surface coated with BP-ZnO NH embedded chitosan (CS) demonstrated better antibacterial activity than BP NF, especially with NIR light treatment. Additionally, the produced BP nanoflakes and BP-ZnO NH, and their coatings over the Ti surface were found to be toxic at a negligible level. Electrochemical studies revealed the high corrosion resistance of the Ti surface coated with the synthesized antibacterial agents without altering its characteristic passive behavior. Owing to the interactions between the charged groups between chitosan and cell surfaces, a slight increase in antibacterial activities was noticed. Chitosan-based coating matrix embedded with nanoagents has adhered well over the Ti surface due to its inherent film-forming and high adhesion properties.
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