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Tunable growth of silver nanobelts on monolithic activated carbon with size-dependent plasmonic response.

Zhao H, Ning Y, Zhao B, Yin F, Du C, Wang F, Lai Y, Zheng J, Li S, Chen L - Sci Rep (2015)

Bottom Line: The widths of silver nanobelts are positively correlated to the growth temperatures.The width/thickness ratio of the silver nanobelts can be adjusted so that their transversal plasmonic absorption peaks can nearly span the whole visible light band, which endows them with different colours.This work demonstrates the great versatility of a simple, green and conceptually novel approach in controlled synthesis of noble metal nanostructures.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical Engineering, Jiangsu Marine Resources Development Research Institute, Huaihai Institute of Technology, Lianyungang 222005, P. R. China.

ABSTRACT
Silver is one of the most important materials in plasmonics. Tuning the size of various silver nanostructures has been actively pursued in the last decade. However, silver nanobelt, a typical one-dimensional silver nanostructure, has not been systematically studied as to tuning its size for controllable plasmonic response. Here we show that silver nanobelts, with mean width ranging from 45 to 105 nm and thickness at ca. 13 nm, can grow abundantly on monolithic activated carbon (MAC) through a galvanic-cell reaction mechanism. The widths of silver nanobelts are positively correlated to the growth temperatures. The width/thickness ratio of the silver nanobelts can be adjusted so that their transversal plasmonic absorption peaks can nearly span the whole visible light band, which endows them with different colours. This work demonstrates the great versatility of a simple, green and conceptually novel approach in controlled synthesis of noble metal nanostructures.

No MeSH data available.


TEM images (left) and width histograms (right) of silver nanobelts prepared on MAC at different temperatures.Scale bars, 200 nm. (#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C.
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f2: TEM images (left) and width histograms (right) of silver nanobelts prepared on MAC at different temperatures.Scale bars, 200 nm. (#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C.

Mentions: Figure 2 depicts the TEM images of five samples #1, #2, #3, #4 and #5, prepared at 30, 24, 24, 20 and 19 °C respectively, along with their width histogram. The mean widths of these nanobelts are listed in Table 2. They are 105.4 nm (#1), 67.5 nm (#2), 62.4 nm (#3), 61.8 nm (#4) and 45.3 nm (#5). These results suggest that the width of Ag nanobelts decreases at lower growth temperature. However, beside temperature, other experimental parameters such as MAC structure and properties, and Ag seeds loading condition etc. may have a profound effect on the size of Ag nanobelts. These experimental conditions had not been able to strictly controlled, and they often smeared the width-temperature relationship. Upon hundreds of experimental tests, it turned out to be a general trend that the width of Ag nanobelts positively correlated to the reaction temperature.


Tunable growth of silver nanobelts on monolithic activated carbon with size-dependent plasmonic response.

Zhao H, Ning Y, Zhao B, Yin F, Du C, Wang F, Lai Y, Zheng J, Li S, Chen L - Sci Rep (2015)

TEM images (left) and width histograms (right) of silver nanobelts prepared on MAC at different temperatures.Scale bars, 200 nm. (#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4559802&req=5

f2: TEM images (left) and width histograms (right) of silver nanobelts prepared on MAC at different temperatures.Scale bars, 200 nm. (#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C.
Mentions: Figure 2 depicts the TEM images of five samples #1, #2, #3, #4 and #5, prepared at 30, 24, 24, 20 and 19 °C respectively, along with their width histogram. The mean widths of these nanobelts are listed in Table 2. They are 105.4 nm (#1), 67.5 nm (#2), 62.4 nm (#3), 61.8 nm (#4) and 45.3 nm (#5). These results suggest that the width of Ag nanobelts decreases at lower growth temperature. However, beside temperature, other experimental parameters such as MAC structure and properties, and Ag seeds loading condition etc. may have a profound effect on the size of Ag nanobelts. These experimental conditions had not been able to strictly controlled, and they often smeared the width-temperature relationship. Upon hundreds of experimental tests, it turned out to be a general trend that the width of Ag nanobelts positively correlated to the reaction temperature.

Bottom Line: The widths of silver nanobelts are positively correlated to the growth temperatures.The width/thickness ratio of the silver nanobelts can be adjusted so that their transversal plasmonic absorption peaks can nearly span the whole visible light band, which endows them with different colours.This work demonstrates the great versatility of a simple, green and conceptually novel approach in controlled synthesis of noble metal nanostructures.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical Engineering, Jiangsu Marine Resources Development Research Institute, Huaihai Institute of Technology, Lianyungang 222005, P. R. China.

ABSTRACT
Silver is one of the most important materials in plasmonics. Tuning the size of various silver nanostructures has been actively pursued in the last decade. However, silver nanobelt, a typical one-dimensional silver nanostructure, has not been systematically studied as to tuning its size for controllable plasmonic response. Here we show that silver nanobelts, with mean width ranging from 45 to 105 nm and thickness at ca. 13 nm, can grow abundantly on monolithic activated carbon (MAC) through a galvanic-cell reaction mechanism. The widths of silver nanobelts are positively correlated to the growth temperatures. The width/thickness ratio of the silver nanobelts can be adjusted so that their transversal plasmonic absorption peaks can nearly span the whole visible light band, which endows them with different colours. This work demonstrates the great versatility of a simple, green and conceptually novel approach in controlled synthesis of noble metal nanostructures.

No MeSH data available.