Hollow mesoporous SiO2 sphere nanoarchitectures with encapsulated silver nanoparticles for catalytic reduction of 4-nitrophenol

2016 ◽  
Vol 3 (5) ◽  
pp. 663-670 ◽  
Author(s):  
Weiqiang Li ◽  
Xiao Ge ◽  
Hao Zhang ◽  
Qianqian Ding ◽  
Hualin Ding ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Laser Ablation ◽  
Catalytic Reduction ◽  
Mesoporous Sio2

Ag@hm-SiO2 nanoreactors with the multi-cores/shell configuration have been successfully synthesized via an effective pre-shell/post-core strategy combined with the laser ablation treatment.

Silver nanoparticles synthesized by laser ablation confined in urea choline chloride deep-eutectic solvent

2016 ◽  
Vol 12 ◽  
pp. 1-4 ◽  
Author(s):  
David O. Oseguera-Galindo ◽  
Roberto Machorro-Mejia ◽  
Nina Bogdanchikova ◽  
Josue D. Mota-Morales
Keyword(s):  
Silver Nanoparticles ◽  
Laser Ablation ◽  
Choline Chloride ◽  
Deep Eutectic Solvent

QUENCHING OF SURFACE PLASMON MODES IN COLLOIDAL SILVER NANOPARTICLES ON OZONIZATION

NANO ◽  
2006 ◽  
Vol 01 (03) ◽  
pp. 229-234
Author(s):  
R. K. RAKSHIT ◽  
SAYANTANI BHATTACHARYA ◽  
R. C. BUDHANI
Keyword(s):  
Silver Nanoparticles ◽  
Laser Ablation ◽  
Surface Plasmon ◽  
Effective Medium Theory ◽  
Plasmon Mode ◽  
Colloidal Silver ◽  
Medium Theory ◽  
Bright Yellow ◽  
Plasmon Peak ◽  
Colloidal Silver Nanoparticles

Oxidation characteristics of colloidal silver nanoparticles produced by pulsed laser ablation in pure and chemically treated water are studied as a function of the degree of ozonization. The bright yellow colloidal solution of silver characterized by a sharp surface plasmon mode at ~400 nm, becomes colorless in the initial stages of O 3 flow, and then acquires a brown hue with a broad plasmon peak centered at ~440 to ~450 nm on further ozonization. The solution again becomes colorless in a few days once the O 3 flow is stopped. We present a qualitative model for the reaction dynamics and analyze the optical absorption in the framework of an effective medium theory. The aqueous phase laser ablation chemistry described here provides a unique means to produce ionic silver for enhanced antimicrobial effects.

The mechanism of oxygen catalytic reduction in the presence of platinum and silver nanoparticles

2010 ◽  
Vol 59 (8) ◽  
pp. 1488-1494 ◽  
Author(s):  
N. A. Yashtulov ◽  
A. A. Revina ◽  
V. R. Flid
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Reduction
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