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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.


Digital photos of silver nanobelts growing on MAC at different temperatures.(#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C. Note for sample #2, black MAC can be found under blue-purple nanobelts.
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f3: Digital photos of silver nanobelts growing on MAC at different temperatures.(#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C. Note for sample #2, black MAC can be found under blue-purple nanobelts.

Mentions: Importantly, these Ag nanobelts prepared on MAC showed different colours under common daylight illumination. For the five Ag nanobelt samples mentioned above, digital photographs were taken and displayed in Fig. 3. Nanobelts #1, #2, #3, #4 and #5 appear light-blue, blue-purple, red, blue, and purple respectively. These as-grown colourful nanobelts resting on the MAC substrate (as most clearly seen in #2 of Fig. 3), looking like colourful seaweeds, can be easily detached by plastic tweezers and dispersed in suitable solvents. Notably, although there have been a variety of methods to preparing noble metal nanobelts28, and some methods seem to have some tunability on their size2022, to our knowledge, there has been no report on the synthesis of noble metal nanobelts with different colours. Therefore, our simple synthetic method could provide a competitive alternative to tune the size and physical properties of noble metal nanobelts.


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)

Digital photos of silver nanobelts growing on MAC at different temperatures.(#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C. Note for sample #2, black MAC can be found under blue-purple nanobelts.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f3: Digital photos of silver nanobelts growing on MAC at different temperatures.(#1) 30 °C, (#2) 24 °C, (#3) 24 °C, (#4) 20 °C, (#5) 19 °C. Note for sample #2, black MAC can be found under blue-purple nanobelts.
Mentions: Importantly, these Ag nanobelts prepared on MAC showed different colours under common daylight illumination. For the five Ag nanobelt samples mentioned above, digital photographs were taken and displayed in Fig. 3. Nanobelts #1, #2, #3, #4 and #5 appear light-blue, blue-purple, red, blue, and purple respectively. These as-grown colourful nanobelts resting on the MAC substrate (as most clearly seen in #2 of Fig. 3), looking like colourful seaweeds, can be easily detached by plastic tweezers and dispersed in suitable solvents. Notably, although there have been a variety of methods to preparing noble metal nanobelts28, and some methods seem to have some tunability on their size2022, to our knowledge, there has been no report on the synthesis of noble metal nanobelts with different colours. Therefore, our simple synthetic method could provide a competitive alternative to tune the size and physical properties of noble metal nanobelts.

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.