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泰坦亚纳米管含有氨基化降解石墨烯氧化物作为有效的光催化剂,可在可见光下进行抗菌应用

Kyoung-Suk Moon¹, Ji-Myung Bae¹, Eun-Joo Choi²

¹Department of Dental Biomaterials and the Institute of Biomaterial and Implant, Wonkwang University College of Dentistry, Iksan-Daero 460, Iksan, 54538, Republic of Korea.

Scientific reports

|February 19, 2025

概括

氨基化减少石墨烯氧化物涂层的泰坦亚纳米管表现出强大的可见光光催化抗菌活性,对金黄色和P. aeruginosa,显示出牙科应用的希望.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
光催化作用的光催化

背景情况:

泰坦 (TiO2) 和减少的氧化石墨烯 (rGO) 已知用于光催化.
关于它们的联合抗菌作用的研究有限.
泰坦亚纳米管 (TiO2 NTs) 为光催化应用提供了很大的表面积.

研究的目的:

为了研究TiO2 NTs与rGO (非功能和氨基化) 结合,作为可见光光催化剂,用于抗菌应用.
为了评估这些复合材料的抗菌功效.
评估它们在牙科应用中的潜力.

主要方法:

场发射扫描电子显微镜 (FESEM) 用于材料表征.
分散反射光谱 (DRS) 用于确定带间隙.
使用S. aureus和P. aeruginosa进行抗菌殖民地形成单元 (CFU) 试验.
酶活性测试 (超氧化脱酶和酶).
对细胞活力的MTT测定.

主要成果:

rGO 均地涂覆了 TiO2 NT 的表面.
与非功能性 (2.40 eV) 相比,氨基化rGO涂层TiO2 NT的带隙较小 (2.21 eV),使可见光活动成为可能.
氨基化rGO-TiO2NTs在470nm可见光下显示出优异的抗菌活性.
经过辐射后使用氨基化rGO-TiO2 NTs观察到细胞活力的增强.

结论:

氨基化rGO涂层TiO2 NT显示显著的可见光光催化抗菌特性.
这种复合材料是抗微生物牙科应用的有希望的候选者.
该组合利用增强的光催化剂进行有效的细菌失活.

关键词:

具有抗菌活性,具有抗菌活性.光催化效应的作用减少的石墨烯氧化物.泰坦尼亚纳米管是什么可见光可见光是一种可见光.

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