title: Detection of label-free H2O2 based on sensitive Au nanorods as sensor.
abstract: A rapid, reproducible, cost-effective approaches for the detection of hydrogen peroxide has been developed based on the change of localized surface plasmon resonance (LSPR) peak of Au nanorods (NRs). Au NRs were prepared by silver ion-assisted seed-mediated method, which are characterized by UV-vis spectroscopy and transmission electron microscopy. The longitudinal plasmon band of Au nanorods is highly sensitive to their aspect ratios so that LSPR peak of Au NRs was shift with change of their aspect ratios. Hydrogen peroxide (H(2)O(2)) with high oxidation potential can decompose Au NRs. As a result, Au NRs can be shortened through an oxidation reaction by H(2)O(2). After shortening Au NRs, the LSPR peaks show blue shift. The LSPR peak of Au NRs displays the dependence of spectral shift on concentration of H(2)O(2). It provides a more simple and sensitive method for detecting H(2)O(2).
authors.affiliation: Center for Advanced Optoelectronic Functional Materials Research, Key laboratory for UV light-emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, PR China. shangy229@nenu.edu.cn
authors.forename: Guiye
authors.initials: G
authors.lastname: Shan
authors.forename: Shujing
authors.initials: S
authors.lastname: Zheng
authors.forename: Shaopeng
authors.initials: S
authors.lastname: Chen
authors.forename: Yanwei
authors.initials: Y
authors.lastname: Chen
authors.forename: Yichun
authors.initials: Y
authors.lastname: Liu
mesh_terms: D006046:Gold / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D020349:Surface Plasmon Resonance
chemical_list: D006046:Gold; D006861:Hydrogen Peroxide