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用于灵敏且可重复检测的三维ZnO:Ga@ITO@Ag表面增强拉曼散射活性基底的制备

Fabrication of Three-Dimensional ZnO: Ga@ITO@Ag SERS-Active Substrate for Sensitive and Repeatable Detectability.

作者信息

Chang Tung-Hao, Liu Yun-Ting, Chang Yu-Cheng, Lo An-Ya

机构信息

Department of Radiation Oncology, Changhua Christian Hospital, Changhua 50006, Taiwan.

Department of Radiological Technology, Yuanpei University, Hsinchu 30015, Taiwan.

出版信息

Nanomaterials (Basel). 2022 Dec 29;13(1):163. doi: 10.3390/nano13010163.

DOI:10.3390/nano13010163
PMID:36616072
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9823785/
Abstract

Vertically aligned ZnO: Ga nanotowers can be directly synthesized on a glass substrate with a ZnO seed film via the chemical bath method. A novel heterostructure of ZnO: Ga@ITO@Ag nanotowers was subsequently deposited in the ITO layer and Ag nanoparticles via the facile two-step ion-sputtering processes on the ZnO: Ga nanotowers. The appropriate ion-sputtering times of the ITO layer and Ag nanoparticles can benefit the fabrication of ZnO: Ga@ITO@Ag nanotowers with higher surface-enhanced Raman scattering (SERS) enhancement in detecting rhodamine 6G (R6G) molecules. Compared with ZnO: Ga@Ag nanotowers, ZnO: Ga@ITO@Ag nanotowers exhibited a high SERS enhancement factor of 2.25 × 10 and a lower detection limit (10 M) for detecting R6G molecules. In addition, the ITO layer used as an intermediate layer between ZnO: Ga nanotowers and Ag nanoparticles can improve SERS enhancement, sensitivity, uniformity, reusability, detection limit, and stability for detecting amoxicillin molecules. This phenomenon shall be ascribed to the ITO layer exhibiting a synergistic Raman enhancement effect through interfacial charge transfer for enhancing SERS activity. As a result, ZnO: Ga@ITO@Ag nanotowers can construct a three-dimensional SERS substrate for potential applications in environmentally friendly and cost-effective chemical or drug detection.

摘要

垂直排列的ZnO:Ga纳米塔可以通过化学浴法在带有ZnO籽晶膜的玻璃基板上直接合成。随后，通过在ZnO:Ga纳米塔上进行简便的两步离子溅射工艺，在ITO层和银纳米颗粒中沉积了一种新型的ZnO:Ga@ITO@Ag纳米塔异质结构。ITO层和银纳米颗粒的适当离子溅射时间有利于制备在检测罗丹明6G（R6G）分子时具有更高表面增强拉曼散射（SERS）增强效果的ZnO:Ga@ITO@Ag纳米塔。与ZnO:Ga@Ag纳米塔相比，ZnO:Ga@ITO@Ag纳米塔在检测R6G分子时表现出2.25×10的高SERS增强因子和更低的检测限（10 M）。此外，用作ZnO:Ga纳米塔和银纳米颗粒之间中间层的ITO层可以提高检测阿莫西林分子时的SERS增强、灵敏度、均匀性、可重复使用性、检测限和稳定性。这种现象应归因于ITO层通过界面电荷转移表现出协同拉曼增强效应，从而增强SERS活性。因此，ZnO:Ga@ITO@Ag纳米塔可以构建一种三维SERS基板，用于在环境友好且经济高效的化学或药物检测中的潜在应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/b2cba33b46a2/nanomaterials-13-00163-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/4c81a50287c5/nanomaterials-13-00163-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/d282b6dd59c8/nanomaterials-13-00163-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/9545394b23f5/nanomaterials-13-00163-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/2fa24448964c/nanomaterials-13-00163-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/bd8aa6613a4f/nanomaterials-13-00163-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/ed6cf7cd0bb2/nanomaterials-13-00163-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/e3e3ee9301ca/nanomaterials-13-00163-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/fac1fffdf467/nanomaterials-13-00163-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/70781337c871/nanomaterials-13-00163-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/b2cba33b46a2/nanomaterials-13-00163-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/4c81a50287c5/nanomaterials-13-00163-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/d282b6dd59c8/nanomaterials-13-00163-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/9545394b23f5/nanomaterials-13-00163-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/2fa24448964c/nanomaterials-13-00163-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/bd8aa6613a4f/nanomaterials-13-00163-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/ed6cf7cd0bb2/nanomaterials-13-00163-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/e3e3ee9301ca/nanomaterials-13-00163-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/fac1fffdf467/nanomaterials-13-00163-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/70781337c871/nanomaterials-13-00163-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bca7/9823785/b2cba33b46a2/nanomaterials-13-00163-g010.jpg

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