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.
Colloids Surf B Biointerfaces. 2013 Feb 1;102:327-30. doi: 10.1016/j.colsurfb.2012.07.041. Epub 2012 Aug 14.
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).
基于金纳米棒（Au NRs）局域表面等离子体共振（LSPR）峰的变化，开发了一种快速、可重现、具有成本效益的检测过氧化氢的方法。Au NRs 是通过银离子辅助的种子介导法制备的，其特征在于通过紫外-可见光谱和透射电子显微镜进行表征。Au 纳米棒的纵向等离子体带对其纵横比非常敏感，因此 Au NRs 的 LSPR 峰随其纵横比的变化而移动。具有高氧化电位的过氧化氢（H（2）O（2））可以分解 Au NRs。结果，H（2）O（2）通过氧化反应可以缩短 Au NRs。缩短 Au NRs 后，LSPR 峰出现蓝移。Au NRs 的 LSPR 峰显示出光谱位移对 H（2）O（2）浓度的依赖性。它为检测 H（2）O（2）提供了一种更简单、更灵敏的方法。
