Polymer-Controlled Synthesis of Silver Nanobelts and Hierarchical Nanocolumns

Single-crystalline silver nanobelts larger than 10 μm in length, 60−100 nm in width, and 30−40 nm in thickness were synthesized facilely in aqueous solutions under the direction of poly(acrylic acid) at 4 °C. With the addition of acetic acid to the solution, unique hierarchical silver nanocolumns consisting of stacked nanoplates were fabricated.