首页|Thin films of α-Fe2O3 nanoparticles using as nonmetallic SERS-active nanosensors for submicromolar detection

Thin films of α-Fe2O3 nanoparticles using as nonmetallic SERS-active nanosensors for submicromolar detection

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
A new kind of nonmetallic nanosensors based on surface-enhanced Raman spectroscopy (SERS) have been successfully prepared by the assembly of α-Fe2O3 nanoparticles (NPs) onto clean quartz surface via the cross-linker of hexamethylene diisocyanate (HDI).The resultant substrates have been characterized by electron micrographs,which show that the α-Fe2O3 NPs distribute on the modified surface uniformly with a monolayer or sub-monolayer structure.4-mercaptopyridine (4-Mpy) and 2-mercaptobenzothiazole (2-MBT) molecules have been used as SERS probes to estimate the detection efficiency of the α-Fe2O3 thin films.The SERS experiments show that it is possible to record high quality SERS spectra from probe molecules on the α-Fe2O3 thin films at sub-micromolar (＜ 10 6 mol/L) concentration.These results indicate that the highly ordered,uniformly roughed,highly sensitive and low-cost α-Fe2O3 thin films are excellent candidates for nonmetallic SERS-active nanosensors.

nanosensorsSERSα-Fe2O3 nanoparticlesthin film

Xiaoqi FU、Shuang WANG、Qian ZHAO、Tingshun JIANG、Hengbo YIN

展开 >

School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China

School of Chemistry and Chemical Engineering, Jiangsu University,Zhenjiang 212013, China

This work was supported by the Natural Science Foundation of Jiangsu Higher Education Institutions of ChinaZhenjiang Science and Technology BureauJiangsu University High-grade Specialty Person Scientific Research Foundation

09KJD150002GJ200600610JDG114

2011

10.1007/sl1458-011-0249-2

中国化学前沿
高等教育出版社

中国化学前沿

ISSN：1673-3495
年,卷(期)：2011.6(3)
  • 40