Pulsed Laser Ablation Produced Copper Nanoparticles (CUO NPS): The Influence of Time

2020 ◽  
Vol 307 ◽  
pp. 279-284
Author(s):  
Nurul Nadia Adnan ◽  
Siti Noraiza Ab Razak ◽  
Muhammad Sufi Roslan ◽  
Nur Athirah Mohd Taib ◽  
Nurhafizah Hasim ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Laser Ablation ◽  
Surface Plasmon ◽  
Copper Nanoparticles ◽  
Plasmon Resonance ◽  
Metallic Nanoparticles ◽  
Noble Metals ◽  
Copper Plate ◽  
Support Surface ◽  
Distilled Water

Copper nanoparticles were synthesized using laser ablation method by the reduction of copper plate in the presence of distilled water. Effects of time as the laser hits on the copper target were increased, the amount of Cu NPs in the distilled water also increased. EDAX confirms the existence of Cu NPs. The metallic nanoparticles have a unique optical property known as Surface Plasmon Resonance (SPR) which can be utilized to enhance the light harvesting performance in many applications. The noble metals of copper have the ability to support surface plasmon resonance which can be used to enhance the efficiency of any device.

scholarly journals Noble Metal-Assisted Surface Plasmon Resonance Immunosensors

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1003 ◽  
Author(s):  
Jin-Ha Choi ◽  
Jin-Ho Lee ◽  
Joohyung Son ◽  
Jeong-Woo Choi
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Noble Metals ◽  
Specific Antigen ◽  
High Sensitivity ◽  
Enzyme Linked Immunosorbent Assay ◽  
Protein Biomarkers ◽  
Detection Probe ◽  
Inducing Factors

For the early diagnosis of several diseases, various biomarkers have been discovered and utilized through the measurement of concentrations in body fluids such as blood, urine, and saliva. The most representative analytical method for biomarker detection is an immunosensor, which exploits the specific antigen-antibody immunoreaction. Among diverse analytical methods, surface plasmon resonance (SPR)-based immunosensors are emerging as a potential detection platform due to high sensitivity, selectivity, and intuitive features. Particularly, SPR-based immunosensors could detect biomarkers without labeling of a specific detection probe, as typical immunosensors such as enzyme-linked immunosorbent assay (ELISA) use enzymes like horseradish peroxidase (HRP). In this review, SPR-based immunosensors utilizing noble metals such as Au and Ag as SPR-inducing factors for the measurement of different types of protein biomarkers, including viruses, microbes, and extracellular vesicles (EV), are briefly introduced.

scholarly journals Palladium nanoparticles anchored to anatase TiO2 for enhanced surface plasmon resonance-stimulated, visible-light-driven photocatalytic activity

2015 ◽  
Vol 6 ◽  
pp. 428-437 ◽  
Author(s):  
Kah Hon Leong ◽  
Hong Ye Chu ◽  
Shaliza Ibrahim ◽  
Pichiah Saravanan
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Palladium Nanoparticles ◽  
Noble Metals ◽  
Visible Region ◽  
Bet Surface Area

Freely assembled palladium nanoparticles (Pd NPs) on titania (TiO2) nano photocatalysts were successfully synthesized through a photodeposition method using natural sunlight. This synthesized heterogeneous photocatalyst (Pd/TiO2) was characterized through field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), BET surface area, UV–vis diffuse reflectance spectra (UV-DRS), Raman and photoluminescence (PL) analyses. The simple and smart synthesis anchored well the deposition with controlled Pd NPs size ranging between 17 and 29 nm onto the surface of TiO2. Thus, it gives the characteristic for Pd NPs to absorb light in the visible region obtained through localized surface plasmon resonance (LSPRs). Apparently, the photocatalytic activity of the prepared photocatalysts was evaluated by degrading the endocrine disrupting compound (EDC) amoxicillin (AMX) excited under an artificial visible light source. In the preliminary run, almost complete degradation (97.5%) was achieved in 5 h with 0.5 wt % Pd loading and the degradation followed pseudo-first-order kinetics. The reusability trend proved the photostability of the prepared photocatalysts. Hence, the study provides a new insight about the modification of TiO2 with noble metals in order to enhance the absorption in the visible-light region for superior photocatalytic performance.

Silver Metallic Nanoparticles with Surface Plasmon Resonance: Synthesis and Characterizations

2016 ◽  
Vol 28 (3) ◽  
pp. 1051-1069 ◽  
Author(s):  
M. Ider ◽  
K. Abderrafi ◽  
A. Eddahbi ◽  
S. Ouaskit ◽  
A. Kassiba
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Metallic Nanoparticles
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