Environmentally benign in situ synthesis of gold nanotapes using carboxymethyl cellulose.
An environmentally friendly one-step wet-chemical approach has been described for controlling the shape of gold nanocrystals at ambient temperature. In this approach, sodium salt of carboxymethyl cellulose (NaCMC) has been used as a reducing-cum-stabilizing agent for the in situ generation of gold nanotapes from an aqueous chloroaurate ion. Transmission electron microscopy confirmed the formation of tape-shaped gold nanostructures. These gold nanotapes exhibited interesting optical properties. The nature of crystallinity of the nanotapes has been studied by X-ray diffractometry. Control experiments with other cellulose derivatives resulted in the formation of only spherical gold nanoparticles.
Bhattacharjee
Rama Ranjan
RR
Polymer Science Unit and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
Rashid
Md Harunar
MH
Mandal
Tarun K
TK
D002266:Carboxymethylcellulose Sodium / Q000737:chemistry*; D003460:Crystallization; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D020349:Surface Plasmon Resonance; D013696:Temperature; D014961:X-Ray Diffraction; D014965:X-Rays
D006046:Gold; D002266:Carboxymethylcellulose Sodium