Ascorbic Acid Functionalized Anti-Aggregated Au Nanoparticles for Ultrafast MEF and SERS Detection of Tartrazine: An Ultra-Wide Piecewise Linear Range Study

The Analyst ◽  
2022 ◽  
Author(s):  
Mengru Li ◽  
Ran Li ◽  
Bo Han ◽  
Haojie Ma ◽  
Xueyan Hou ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Au Nanoparticles ◽  
Piecewise Linear ◽  
Linear Range ◽  
Food Colorant ◽  
Sers Detection ◽  
Excessive Intake ◽  
Range Study

Tartrazine, as a synthetic food colorant, is harmful to health upon excessive intake. In this work, we developed a simple, sensitive and ultrafast method to detect tartrazine effectively. Specifically, we...

Facile Surface Modification of Mesoporous Au Nanoparticles for Highly Sensitive SERS Detection

2020 ◽  
Vol 92 (23) ◽  
pp. 15379-15387
Author(s):  
Dongjie Zhang ◽  
Hongjun You ◽  
Lingling Zhang ◽  
Jixiang Fang
Keyword(s):  
Surface Modification ◽  
Au Nanoparticles ◽  
Highly Sensitive ◽  
Sers Detection

Simultaneous determination of dopamine, ascorbic acid and uric acid using a multi-walled carbon nanotube and reduced graphene oxide hybrid functionalized by PAMAM and Au nanoparticles

2015 ◽  
Vol 7 (4) ◽  
pp. 1471-1477 ◽  
Author(s):  
Siyuan Wang ◽  
Wen Zhang ◽  
Xia Zhong ◽  
Yaqin Chai ◽  
Ruo Yuan
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Simultaneous Determination ◽  
Au Nanoparticles ◽  
Electrochemical Determination ◽  
Multi Walled Carbon Nanotube ◽  
Reduced Graphene

A nanohybrid (RGO–PAMAM–MWCNT–AuNPs) for simultaneous electrochemical determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) was reported in this paper.

Two-Photon Sensing of Dopamine by Using Au Nanoparticles

2015 ◽  
Vol 738-739 ◽  
pp. 31-37
Author(s):  
Cui Feng Jiang ◽  
Neng Yue Gao ◽  
Qi Sheng Wu ◽  
Yu Sun ◽  
Qing Hua Xu
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Detection Limit ◽  
Metal Ions ◽  
Gold Nanoparticle ◽  
Au Nanoparticles ◽  
Cross Linking ◽  
Au Nps ◽  
Two Photon ◽  
Catechol Group

In this paper, we demonstrated a gold nanoparticle based two-photon photoluminescence (TPPL) assay for the detection of dopamine with the detection limit of 0.3 μM. Protonated dopamine molecules can bind bidentately to surface of gold atoms through the catechol group. The adsorption of dopamine displaces the stabilizing agent of citrate groups, and neutralizes the charge of solution, resulting in non-cross linking aggregation of Au NPs. Aggregation of Au NPs could induce significantly enhanced TPPL. Thus, a simple TPPL assay was designed. We have shown that when Au NPs solution was mixed with dopamine, TPPL intensity increased by about 47 times. The mechanism of sensing assay has been discussed. In addition, the TPPL assay was highly selective to dopamine and it can distinguish from uric acid, ascorbic acid and metal ions.

Assembled growth of 3D Fe3O4@Au nanoparticles for efficient photothermal ablation and SERS detection of microorganisms

2018 ◽  
Vol 6 (36) ◽  
pp. 5689-5697 ◽  
Author(s):  
Wei-En Hong ◽  
I-Ling Hsu ◽  
Szu-Yung Huang ◽  
Chien-Wei Lee ◽  
Han Ko ◽  
...  
Keyword(s):  
Antibacterial Agent ◽  
Au Nanoparticles ◽  
Sers Signal ◽  
Photothermal Ablation ◽  
Sers Detection

A leukocyte-like Fe3O4@Au-polydopamine nanohybrid performed a magnetism-based enhanced SERS signal and efficient NIR-irradiated photothermal antibacterial agent.

scholarly journals Microporous silica membranes promote plasmonic nanoparticle stability for SERS detection of uranyl

Nanoscale ◽  
2020 ◽  
Vol 12 (46) ◽  
pp. 23700-23708
Author(s):  
Hoa T. Phan ◽  
Shenghao Geng ◽  
Amanda J. Haes
Keyword(s):  
Ionic Strength ◽  
Au Nanoparticles ◽  
Microporous Silica ◽  
Silica Membranes ◽  
Plasmonic Nanoparticle ◽  
Nanoparticle Stability ◽  
Sers Detection ◽  
Sers Sensing

Microporous silica membranes facilitate plasmonic stability of Ag@Au nanoparticles against variations in pH, ionic strength, and temperature for SERS sensing.

PdPt bimetallic alloy nanowires-based electrochemical sensor for sensitive detection of ascorbic acid

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42008-42013 ◽  
Author(s):  
Lihua Jin ◽  
Zaihua Zhang ◽  
Zhihua Zhuang ◽  
Zheng Meng ◽  
Cong Li ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Detection Limit ◽  
Electrochemical Sensor ◽  
Electrocatalytic Activity ◽  
Linear Range ◽  
Sensitive Detection ◽  
Wide Linear Range ◽  
Bimetallic Alloy ◽  
Alloy Nanowires

A novel PdPt bimetallic alloy nanowires-based electrochemical sensor for sensitive detection of ascorbic acid with remarkable electrocatalytic activity in a wide linear range (0.01–0.97 mM) and a detection limit as low as 0.2 μM.

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