A template/electrochemical deposition method for fabricating silver nanorod arrays based on porous anodic alumina

Abstract

A template/electrochemical deposition method for fabricating silver nanorod arrays based on porous anodic alumina was presented. The barrier layer of porous anodic alumina templates was thinned by step-by-step voltage decrement method. Subsequently, silver ions were reduced into the channels of porous anodic alumina templates by electrochemical deposition method. Electrochemical impedance spectroscopy was utilized for analyzing the thickness of barrier layer of porous anodic alumina templates; the elementary composition and the size of silver nanorod arrays were characterized by X-ray diffraction and field-emission scanning electron microscope, respectively. Experimental results showed that the thickness of barrier layer of porous anodic alumina was suitable for alternating current electrochemical deposition, when anodizing potential was decreased to 70 V and widening time of porous anodic alumina in H 3 PO 4 solution is 80 min. And the silver particles could be deposited into the channels of porous anodic alumina templates at 11 V, 13 V, and 15 V. Different sizes of silver nanorod arrays were obtained by controlling the deposition time. The average diameter of silver nanorod is in the range from 346 nm to 351 nm which is almost consistent with the pore diameter of porous anodic alumina templates (367 nm). The uniform silver nanorod arrays have a considerable potential in the flexible and wearable electronic devices, optics, solar cell, the catalytical electrode, and so on.

Synthesis and Applications of Silver Nanowires for Transparent Conductive Films

“…However, the impurities are always introduced into the apparatus during pulverization process, so Ag NWs with high performance are usually synthesized by chemical methods [39]. The chemical methods have the characteristics of facile process, convenient operation, and are easy to scale up, including the template method [40], polyol method [41], photoreduction method [42] and solvothermal method [43], etc., and these methods are summarized and discussed in this review.…”

Electrochemically deposited silver detection substrate for surface-enhanced Raman spectroscopy cancer diagnostics

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