Fabrication and characterization of hierarchical multipod silver citrate complex microcrystals with excellent SERS properties

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12311-12314 ◽  
Author(s):  
Yongyun Mao ◽  
Yuwen Yang ◽  
Hongwei Yang ◽  
Jiao Han ◽  
Yiming Zeng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Sers Substrate ◽  
Excellent Performance ◽  
Term Stability ◽  
Long Term Stability ◽  
Citrate Complex ◽  
Fabrication And Characterization ◽  
First Time

Novel hierarchical multipods silver citrate complexes (SCC) microcrystals have been successfully synthesized in aqueous solution for the first time. The multipods SCC microcrystals showed excellent performance and long-term-stability as SERS substrate.

scholarly journals Long-Term Stability of Different Kinds of Gas Nanobubbles in Deionized and Salt Water

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1808
Author(s):  
Yali Zhou ◽  
Zhenyao Han ◽  
Chunlin He ◽  
Qin Feng ◽  
Kaituo Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Bubble Size ◽  
Ostwald Ripening ◽  
Salt Water ◽  
Dlvo Theory ◽  
Deionized Water ◽  
Hydrodynamic Cavitation ◽  
Term Stability ◽  
Long Term Stability

Nanobubbles have many potential applications depending on their types. The long-term stability of different gas nanobubbles is necessary to be studied considering their applications. In the present study, five kinds of nanobubbles (N2, O2, Ar + 8%H2, air and CO2) in deionized water and a salt aqueous solution were prepared by the hydrodynamic cavitation method. The mean size and zeta potential of the nanobubbles were measured by a light scattering system, while the pH and Eh of the nanobubble suspensions were measured as a function of time. The nanobubble stability was predicted and discussed by the total potential energies between two bubbles by the extended Derjaguin–Landau–Verwey–Overbeek (DLVO) theory. The nanobubbles, except CO2, in deionized water showed a long-term stability for 60 days, while they were not stable in the 1 mM (milli mol/L) salt aqueous solution. During the 60 days, the bubble size gradually increased and decreased in deionized water. This size change was discussed by the Ostwald ripening effect coupled with the bubble interaction evaluated by the extended DLVO theory. On the other hand, CO2 nanobubbles in deionized water were not stable and disappeared after 5 days, while the CO2 nanobubbles in 1 mM of NaCl and CaCl2 aqueous solution became stable for 2 weeks. The floating and disappearing phenomena of nanobubbles were estimated and discussed by calculating the relationship between the terminal velocity of the floating bubble and bubble size.

Enhanced stability of conductive polyacetylene in ladder-like surface-grafted brushes

2016 ◽  
Vol 7 (36) ◽  
pp. 5664-5670 ◽  
Author(s):  
Michał Szuwarzyński ◽  
Karol Wolski ◽  
Szczepan Zapotoczny
Keyword(s):  
Term Stability ◽  
Long Term Stability ◽  
Enhanced Stability

Formation and characterization of polyacetylene-based brushes that exhibit exceptional long term stability in air is presented here.

Enhancement of efficiency and long-term stability in graphene/Si-quantum-dot heterojunction photodetectors by employing bis(trifluoromethanesulfonyl)-amide as a dopant for graphene

2017 ◽  
Vol 5 (48) ◽  
pp. 12737-12743 ◽  
Author(s):  
Dong Hee Shin ◽  
Chan Wook Jang ◽  
Ju Hwan Kim ◽  
Jong Min Kim ◽  
Ha Seung Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Term Stability ◽  
Long Term Stability ◽  
Si Quantum Dot ◽  
First Time ◽  
Si Quantum Dots

Bis(trifluoromethanesulfonyl)-amide (TFSA) is for the first time employed as a dopant for graphene for graphene/Si-quantum-dots-based photodetectors.

scholarly journals Ultrafast characterization of the electron injection from CdSe quantum dots and dye N719 co-sensitizers into TiO2 using sulfide based ionic liquid for enhanced long term stability

2013 ◽  
Vol 100 ◽  
pp. 35-43 ◽  
Author(s):  
Victoria González-Pedro ◽  
Qing Shen ◽  
Vasko Jovanovski ◽  
Sixto Giménez ◽  
Ramon Tena-Zaera ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ionic Liquid ◽  
Electron Injection ◽  
Cdse Quantum Dots ◽  
Term Stability ◽  
Long Term Stability
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