TY - JOUR
T1 - Identification of silver cubic structures during ultrasonication of chitosan AgNO3 solution
AU - Raghavendra, Gownolla Malegowd
AU - Jung, Jeyoung
AU - Kim, Dowan
AU - Varaprasad, Kokkarachedu
AU - Seo, Jongchul
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/11/5
Y1 - 2016/11/5
N2 - During ultrasonication of chitosan AgNO3 solution (10 mM), silver cubic structures were identified along with other dispersed silver nanoparticles. Temperature influenced the formation of the cubic structures. Formation of the silver cubic structures occurred via initial formation of ‘four petal flower-like’ structures that underwent transformation to the “cubic morphology” in the latter stages. Aging of the reaction mixture led to formation of complete dendrites. These dendrites comprised a large quantity of silver nanoparticles. Upon repetition of the experiment with starch instead of chitosan, the identified silver cubic structures were completely absent, indicating that formation of the ‘silver cubic structures’ is dependent on the polysaccharide used. It is believed that the structural features of chitosan facilitate the formation of ‘silver cubic structures’ under ultrasonic conditions. The phenomena occurring during the experiments were evaluated via scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), ultraviolet-visible (UV–vis) spectra, transmission electron microscopy (TEM), and selected area electron diffraction (SAED) analysis.
AB - During ultrasonication of chitosan AgNO3 solution (10 mM), silver cubic structures were identified along with other dispersed silver nanoparticles. Temperature influenced the formation of the cubic structures. Formation of the silver cubic structures occurred via initial formation of ‘four petal flower-like’ structures that underwent transformation to the “cubic morphology” in the latter stages. Aging of the reaction mixture led to formation of complete dendrites. These dendrites comprised a large quantity of silver nanoparticles. Upon repetition of the experiment with starch instead of chitosan, the identified silver cubic structures were completely absent, indicating that formation of the ‘silver cubic structures’ is dependent on the polysaccharide used. It is believed that the structural features of chitosan facilitate the formation of ‘silver cubic structures’ under ultrasonic conditions. The phenomena occurring during the experiments were evaluated via scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), ultraviolet-visible (UV–vis) spectra, transmission electron microscopy (TEM), and selected area electron diffraction (SAED) analysis.
KW - Dendrite
KW - Four petal flower
KW - Silver cubic structure
KW - Silver nanoparticles
KW - Ultrasonication
UR - http://www.scopus.com/inward/record.url?scp=84981724771&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2016.07.045
DO - 10.1016/j.carbpol.2016.07.045
M3 - Article
C2 - 27516304
AN - SCOPUS:84981724771
SN - 0144-8617
VL - 152
SP - 558
EP - 565
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
ER -