(665f) Synthesis of Gold Nanowires with 2-D Network Structure Using Sodium Carboxymethyl Cellulose by Self-Reduction Method

A new green chemical method is reported to synthesize gold nanowires with 2-D network structrue through reducing HAuCl₄ by sodium carboxymethyl cellulose (CMC). The concentration of CMC controlled the gold nanoparticles growth. TEM image displayed directly that the reduced products were gold nanowires. With a fixed concentration of HAuCl₄ of 0.2 mM, as the concentration of CMC was 0.05%, the reaction temperature was 80 ^oC, there were gold nanowires (with 10 nm wide) formed; as 0.5%, some multipodlike gold nanoparticles with equivalent diameter around 80 nm prepared. Selected electron diffraction suggested that the nanowires with 2-D network structrue were composed by single crystal nanowires. UV-Vis absorption spectrum of gold nanowires showed that there were anisotropic nanostures formed in the reacted solutions. The preferred noble metal nanowires with 2-D network may be obtained easily by this green chemical method.