scholarly journals A Sensitive Resonance Rayleigh Scattering Method for Na+ Based on Graphene Oxide Nanoribbon Catalysis

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Haidong Wang ◽  
Chongning Li ◽  
Yanghe Luo ◽  
Zhiliang Jiang
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Detection Limit ◽  
Gold Nanoparticle ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Scattering Method ◽  
Graphene Oxide Nanoribbons ◽  
Potassium Pyroantimonate ◽  
Coordination Reaction

The gold nanoparticle reaction of HAuCl4-H2O2 was very slow under 60°C, and the as-prepared graphene oxide nanoribbons (GONRs) exhibited strong catalysis of the reaction to form gold nanoparticles (AuNP) that appeared a resonance Rayleigh scattering (RRS) peak at 550 nm. Upon addition of potassium pyroantimonate (PA) ligand, it was adsorbed on the GONRs surface to inhibit the catalysis to cause the RRS peak decreasing. When the analyte of Na+ was added, the coordination reaction between PA and Na+ took place to form the stable complexes of [Na2(PA)] to release free GONRs catalyst that resulted in the RRS peak increasing linearly. Accordingly, a new and sensitive RRS method for Na+ was established, with a linear range of 0.69-25.8 nmol/L and a detection limit of 0.35 nmol/L Na+.

A Resonance Rayleigh Scattering Method for the Determination of Trace Benzotriazole Based on Complex Particle

2013 ◽  
Vol 830 ◽  
pp. 448-451
Author(s):  
Ling Ling Ye ◽  
Ai Hui Liang
Keyword(s):  
Detection Limit ◽  
Nitrogen Atom ◽  
Rayleigh Scattering ◽  
Hydroxylamine Hydrochloride ◽  
Regression Equation ◽  
Resonance Rayleigh Scattering ◽  
Scattering Method ◽  
Buffer Solution ◽  
Complex Particle

In pH 4.2 HAc-NaAc buffer solution, hydroxylamine hydrochloride reduced Cu2+ to Cu+ that coordinate the nitrogen atom of 1,2,3-benzotriazole (BTA) to form Cu-BTA complex particles with a resonance Rayleigh scattering (RRS) peak at 369 nm. Under the selected conditions, when the BTA concentration increased, the RRS intensity at 369 nm increased. The increased RRS intensity ΔI369nm was linear to BTA concentration in the range of 0.17-13.36 µg/mL, with a regression equation of ΔI369nm = 89.91C + 96.7, and the detection limit is 0.17 µg/mL. Accordingly, a new RRS method for BTA was established.

A Highly Sensitive Resonance Rayleigh Scattering Method for Platelet-Derived Growth Factor Using Aptamer-Nanogold Probe as Catalyst of the Cu2O Particle Reaction

2013 ◽  
Vol 680 ◽  
pp. 137-140
Author(s):  
Dong Mei Yao ◽  
Gui Qing Wen ◽  
Jian Niao Tian ◽  
Zhi Liang Jiang ◽  
Ai Hui Liang
Keyword(s):  
Gold Nanoparticles ◽  
Growth Factor ◽  
Rayleigh Scattering ◽  
Sodium Citrate ◽  
Reducing Agent ◽  
Platelet Derived Growth Factor ◽  
Resonance Rayleigh Scattering ◽  
Scattering Method ◽  
Highly Sensitive

Using sodium citrate as reducing agent, different sizes of gold nanoparticles(GN) were prepared, and were modified by platelet-derived growth factor (PDGF) aptamer to obtain stable aptamer-nanogold probes (Apt-GN). The probe specifically combined with PDGF-AA to form Apt-GN-PDGF-AA clusters that exhibited a resonance Rayleigh scattering (RRS) peak at 550 nm. The RRS intensity ΔI550nmwas linear to the PDGF-AA concentration in the range of 0.33-40 ng/ml. The probe has strong catalysis of the Fehling reagent-glucose Cu2O particle reaction that can be monitored by RRS technique at 610 nm, but the cluster is very weak. When PDGF-AA concentration increased, the Apt-GN decreased, and the RRS intensity at 610 nm decreased. The decreased RRS intensity ΔI610nmwas linear to PDGF-AA concentration in the range of 0.03-26.67 ng/mL. Accordingly, two new aptamer-nanogold RRS methods were established.

Catalytic Reaction-Nanogold Resonance Rayleigh Scattering Method for Thedetermination of Trace Tellurium

2013 ◽  
Vol 788 ◽  
pp. 383-386
Author(s):  
Ling Ling Ye ◽  
Ai Hui Liang
Keyword(s):  
Detection Limit ◽  
Nitrogen Atom ◽  
Catalytic Reaction ◽  
Rayleigh Scattering ◽  
Hydroxylamine Hydrochloride ◽  
Regression Equation ◽  
Resonance Rayleigh Scattering ◽  
Scattering Method ◽  
Buffer Solution

In pH 4.2 HAc-NaAc buffer solution, hydroxylamine hydrochloride reduced Cu2+to Cu+that coordinate the nitrogen atom of 1,2,3-benzotriazole (BTA) to form Cu-BTA complex particles with a resonance Rayleigh scattering (RRS) peak at 369 nm. Under the selected conditions, when the BTA concentration increased, the RRS intensity at 369 nm increased. The increased RRS intensity ΔI369nmwas linear to BTA concentration in the range of 0.17-13.36 μg/mL, with a regression equation of ΔI369nm= 89.91C + 96.7, and the detection limit is 0.17 μg/mL. Accordingly, a new RRS method for BTA was established.

Catalytic Reaction-Nanogold Resonance Rayleigh Scattering Method for the Determination of Trace Tellurium

2013 ◽  
Vol 787 ◽  
pp. 392-395
Author(s):  
Qing Zeng ◽  
Ai Hui Liang ◽  
Wen Qing Yin ◽  
Zhi Liang Jiang
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Reaction ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Scattering Method ◽  
Strong Resonance ◽  
Hcl Medium

In 6 mol/L HCl medium, TeO42-is reduced by NaH2PO2to Te that catalyze NaH2PO2reducing HAuCl4to form gold nanoparticles (AuNPs), which exhibited a strong resonance Rayleigh scattering (RRS) peak at 370 nm. With the TeO42-concentration increased, the catalytic reaction enhanced and formed more AuNPs that resulting in the RRS peak increased. Under the chosen conditions, the RRS intensity at 370 nm enhanced linearly with the concentration of TeO42-in the range of 12.5-287.5 nmol/L. This RRS method was sensitivity, selectivity, and simplicity.

Nanogold Resonance Rayleigh Scattering Method for Trace NO2- Based on P-Aminobenzene Sulfonic Acid-Α-Naphthylamine Colored Reaction

2013 ◽  
Vol 716 ◽  
pp. 62-65
Author(s):  
Gui Qing Wen ◽  
Ting Sheng Li ◽  
Zhi Liang Jiang
Keyword(s):  
Detection Limit ◽  
Correlation Coefficient ◽  
Azo Dye ◽  
Sulfonic Acid ◽  
Rayleigh Scattering ◽  
Regression Equation ◽  
Acidic Condition ◽  
Resonance Rayleigh Scattering ◽  
Scattering Method ◽  
Color System

In acidic condition, NO2- combined with p-aminobenzene sulfonic acid by diazotization, and then reacted with α-naphthylamine to form purple azo dye. The resonance Rayleigh scattering (RRS) signal of the color system was detected by nanogold probe. Under the chosen conditions, the decreased RRS intensity ΔI (ΔI= Ib - I) at 500 nm was linear to the NO2- concentration in the range of 7.0×10-2-42.0μmol/L, with a regression equation of ΔI=6.72 C - 6.93, a correlation coefficient of 0.9982 and a detection limit of 2.6×10-4 mol/L NO2-.

A simple and sensitive graphene oxide/gold nanoparticle surface plasmon resonance Rayleigh scattering-energy transfer analytical platform for detection of iodide and H2O2

RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 9272-9277 ◽  
Author(s):  
Yaohui Wang ◽  
Xinghui Zhang ◽  
Qingye Liu ◽  
Guiqing Wen ◽  
Aihui Liang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Transfer ◽  
Surface Plasmon Resonance ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Nanoparticle Surface

A sensitive graphene oxide/nanogold surface plasmon resonance Rayleigh scattering-energy transfer analytical platform was developed for detection of iodide and H2O2.

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