当前位置: X-MOL 学术Cellulose › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Flexible and reusable SERS substrate for rapid conformal detection of residue on irregular surface
Cellulose ( IF 5.7 ) Pub Date : 2020-11-11 , DOI: 10.1007/s10570-020-03568-x
Jing Yang , Jiangtao Xu , Xueyan Bian , Yi Pu , Ka lam Chiu , Dagang Miao , Shouxiang Jiang

Surface-enhanced Raman scattering (SERS) is gaining prominence as a rapid and effective detection method. However, this technique is still challenged by reusability and sampling issues, especially on irregular surfaces. To address these obstacles, a flexible SERS substrate is designed in this study by using reduced graphene oxide (rGO) as the active material and cotton fabric as the substrate material. The cotton fabric is first modified with a silicane coupling agent before coating with rGO to enhance the adhesion between the rGO and cotton fabric, which would allow reusability of the substrate. The resultant SERS substrate shows a better performance with an enhancement factor of 8 × 103 and a calculated sensitivity of 4.5 × 10−6 M, as well as excellent signal reproducibility with a relative standard deviation (RSD) of 4.72% and stability with RSD value of 5.47%. Meanwhile, the SERS substrate also demonstrates enhanced reusability, and retains strong Raman signals of the dye molecules even after 40 cycles of detection and washing process. The exceptional SERS performance, enhanced reusability, stability and signal reproducibility, along with other intrinsic advantages, such as low cost, ease of availability, and excellent flexibility, render the obtained SERS substrate in this study a promising product for detection in practical applications.



中文翻译:

灵活且可重复使用的SERS基材,用于快速保形检测不规则表面上的残留物

作为快速有效的检测方法,表面增强拉曼散射(SERS)越来越受到关注。但是,这种技术仍然受到可重用性和采样问题的挑战,尤其是在不规则表面上。为了解决这些障碍,本研究通过使用还原型氧化石墨烯(rGO)作为活性材料和棉织物作为基质材料来设计柔性SERS基质。在用rGO涂层之前,先用硅酮偶联剂对棉织物进行改性,以增强rGO和棉织物之间的粘附力,这将使基材具有可重复使用性。所得的SERS基板表现出更好的性能,增强因子为8×10 3,计算出的灵敏度为4.5×10 -6 M,以及出色的信号重现性,相对标准偏差(RSD)为4.72%,稳定性为RSD值5.47%。同时,即使经过40个循环的检测和洗涤过程,SERS底物也具有增强的可重复使用性,并保留了染料分子的强拉曼信号。出色的SERS性能,增强的可重用性,稳定性和信号重现性,以及其他固有优势,例如低成本,易用性和出色的柔韧性,使本研究中获得的SERS底物成为在实际应用中检测的有前途的产品。

更新日期:2020-11-12
down
wechat
bug