A galvanic exchange process visualized on single silver nanoparticles via dark-field microscopy imaging

Nanoscale ◽  
2018 ◽  
Vol 10 (26) ◽  
pp. 12805-12812 ◽  
Author(s):  
Jun Zhou ◽  
Tong Yang ◽  
Wei He ◽  
Zi Yu Pan ◽  
Cheng Zhi Huang
Keyword(s):  
Silver Nanoparticles ◽  
Light Scattering ◽  
Reaction Kinetics ◽  
Removal Rate ◽  
Exchange Process ◽  
Dark Field ◽  
Gold Deposition ◽  
Microscopy Imaging ◽  
Dark Field Microscopy ◽  
Kinetics Of

A galvanic exchange (GE) process was visually monitored in real-time using light scattering dark-field microscopy imaging, through which the reaction kinetics of the GE process was visualized and the silver removal rate and gold deposition rate on single nanoparticles were revealed.

Real-time monitoring of oxidative etching on single Ag nanocubes via light-scattering dark-field microscopy imaging

Nanoscale ◽  
2015 ◽  
Vol 7 (37) ◽  
pp. 15209-15213 ◽  
Author(s):  
Yi Wang ◽  
Hong Yan Zou ◽  
Cheng Zhi Huang
Keyword(s):  
Light Scattering ◽  
Real Time ◽  
Dark Field ◽  
Real Time Monitoring ◽  
Microscopy Imaging ◽  
Real Time Mode ◽  
Oxidative Etching ◽  
Dark Field Microscopy

Oxidative etching on single Ag nanocubes was monitored in real-time mode through light-scattering dark-field microscopy imaging.

Analytical methods based on the light-scattering of plasmonic nanoparticles at the single particle level with dark-field microscopy imaging

The Analyst ◽  
2017 ◽  
Vol 142 (2) ◽  
pp. 248-256 ◽  
Author(s):  
Tian Li ◽  
Xi Wu ◽  
Feng Liu ◽  
Na Li
Keyword(s):  
Light Scattering ◽  
Single Particle ◽  
Analytical Methods ◽  
Imaging Technique ◽  
Dark Field ◽  
Plasmonic Nanoparticles ◽  
Microscopy Imaging ◽  
Single Particle Level ◽  
Dark Field Microscopy ◽  
Particle Level

This minireview summarizes analytical methods based on the light-scattering of gold nanoparticles with the dark-field microscopy imaging technique at the single particle level.

Color resolution improvement of the dark-field microscopy imaging of single light scattering plasmonic nanoprobes for microRNA visual detection

Nanoscale ◽  
2017 ◽  
Vol 9 (13) ◽  
pp. 4593-4600 ◽  
Author(s):  
Jun Zhou ◽  
Peng Fei Gao ◽  
Hong Zhi Zhang ◽  
Gang Lei ◽  
Lin Ling Zheng ◽  
...  
Keyword(s):  
Light Scattering ◽  
Visual Detection ◽  
Dark Field ◽  
Microscopy Imaging ◽  
Dark Field Microscopy ◽  
Resolution Improvement

Aptamer-modified selenium nanoparticles for dark-field microscopy imaging of nucleolin

2017 ◽  
Vol 53 (97) ◽  
pp. 13047-13050 ◽  
Author(s):  
Meng Li Liu ◽  
Hong Yan Zou ◽  
Chun Mei Li ◽  
Rong Sheng Li ◽  
Cheng Zhi Huang
Keyword(s):  
Light Scattering ◽  
Cancer Cells ◽  
Water Solubility ◽  
Dark Field ◽  
Selenium Nanoparticles ◽  
Microscopy Imaging ◽  
Dark Field Microscopy ◽  
First Time

Selenium nanoparticles with good water solubility and excellent biocompatibility are used for the first time as a light-scattering nanoprobe with aptamer modification to image nucleolin-overexpressing cancer cells through dark-field microscopy.

A dark-field light scattering platform for real-time monitoring of the erosion of microparticles by Co2+

The Analyst ◽  
2014 ◽  
Vol 139 (11) ◽  
pp. 2783-2787 ◽  
Author(s):  
Hui Yang ◽  
Yue Liu ◽  
Peng Fei Gao ◽  
Jian Wang ◽  
Cheng Zhi Huang
Keyword(s):  
Light Scattering ◽  
Real Time ◽  
Slight Modification ◽  
Dark Field ◽  
Real Time Monitoring ◽  
Microscopy Imaging ◽  
The Real ◽  
Dark Field Microscopy

Poly(p-phenylenediamine) (PpPD) microparticles were prepared by the reported methods with slight modification, and then used for the real-time monitoring the erosion reaction between PpPD microparticles and Co2+ with a dark-field microscopy imaging (iDFM) technique.

Precision improvement in dark-field microscopy imaging by using gold nanoparticles as an internal reference: a combined theoretical and experimental study

Nanoscale ◽  
2016 ◽  
Vol 8 (16) ◽  
pp. 8729-8736 ◽  
Author(s):  
Jun Ma ◽  
Yue Liu ◽  
Peng Fei Gao ◽  
Hong Yan Zou ◽  
Cheng Zhi Huang
Keyword(s):  
Experimental Study ◽  
Gold Nanoparticles ◽  
Measurement Errors ◽  
Dark Field ◽  
Internal Reference ◽  
Microscopy Imaging ◽  
Microscopic Imaging ◽  
Dark Field Microscopy

The internal reference (IR) was introduced to dark-field microscopic imaging (iDFM) technique to reduce the large unavoidable measurement errors, and improved precision of the acquired signals has been obtained.

Observation of time-dependent single-particle light scattering from gold nanorods and nanospheres by using unpolarized dark-field microscopy

2006 ◽  
Author(s):  
Vladimir A. Bogatyrev ◽  
Lev A. Dykman ◽  
Anna V. Alekseeva ◽  
Boris N. Khlebtsov ◽  
Anna P. Novikova ◽  
...  
Keyword(s):  
Light Scattering ◽  
Gold Nanorods ◽  
Single Particle ◽  
Dark Field ◽  
Time Dependent ◽  
Dark Field Microscopy

scholarly journals Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts

2012 ◽  
Vol 14 (2) ◽  
pp. 42-48 ◽  
Author(s):  
Dongfang Zhang
Keyword(s):  
Reaction Kinetics ◽  
Rhodamine B ◽  
Diffuse Reflectance Spectroscopy ◽  
Degradation Kinetics ◽  
Chemical Reduction ◽  
Gold Deposition ◽  
Photocatalytic Removal ◽  
Rhodamine B Dye ◽  
Group Density ◽  
Kinetics Of

Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts Heterogeneous photocatalytic removal of Rhodamine-B (RhB) dye by metallic Au nanopatrticles deposited TiO2 photocatalyst was studied. For this study, a chemical reduction method by hydrazine hydrate for gold deposition was employed in order to synthesize Au/TiO2 nanocomposite system. For the characterization of the synthesized nanomaterials, X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), the Fourier transformation infrared spectroscopy (FTIR) and photoluminescence spectroscopy (PLS) techniques were performed. The obtained results show that the deposition of gold onto TiO2 surface could effectively inhibit the recombination of the photoinduced electron and holes, improving the absorption capability for the visible light source and leading to the increased surface OH group density. The degradation experiment reveals that the efficiency of color removal from RhB aqueous solution containing Au/TiO2 powders for the photocatalytic bleaching of RhB dye is more efficient than that of bare TiO2 sample upon UV-vis light activation. In addition, degradation kinetics of RhB dye in aqueous suspensions can be well simulated by the Langmuir-Hinshelwood model and obeys the pseudo-first order law, with a decolorization rate of 0.0252 min-1 to the photocatalytic removal of RhB dye.

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