Abstract
AbstractThree‐dimensional (3D) flexible surface enhanced Raman scattering (SERS) substrates of silver nanoparticles (Ag‐NPs) decorated Germanium nanowhiskers (Ge‐NWHKs) grafted on carbon fiber cloth (CFC) (denoted as Ag‐NPs@Ge‐NWHKs@CFC) are constructed via chemical vapor deposition growth of high‐density Ge‐NWHKs on CFC and then assembly of Ag‐NPs on the Ge‐NWHKs by galvanic displacement. Ordered 3D framework of Ge‐NWHKs grafted flexible CFC impels the formation of large amounts of Ag‐NPs with homogenous distribution via spontaneous reduction of Ag+ ions. Thus, the Ag‐NPs@Ge‐NWHKs@CFC SERS substrates present ultra‐high sensitivity, good reproducibility, and high flexibility. This SERS sensor has achieved a detection limit of 1 pM for Rhodamine 6G and 0.1 nM for thiram respectively. The as‐fabricated SERS substrates show promising potential for applications in rapid detection of trace organic pollutants in the aquatic environment.
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