Synthesis and characterization of polyurethanes containing glucose for selective determination of epinephrine in the presence of a high concentration of ascorbic acid

2012 ◽  
Vol 62 (2) ◽  
pp. 246-250 ◽  
Author(s):  
Aziz Paşahan ◽  
Süleyman Köytepe ◽  
Mahmut Alper Cengiz ◽  
Turgay Seçkin
Keyword(s):  
Ascorbic Acid ◽  
Synthesis And Characterization ◽  
High Concentration ◽  
Selective Determination

scholarly journals Simultaneous Recognition of Dopamine and Uric Acid in the Presence of Ascorbic Acid via an Intercalated MXene/PPy Nanocomposite

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3069
Author(s):  
Qiannan You ◽  
Zhongyang Guo ◽  
Rui Zhang ◽  
Zhimin Chang ◽  
Mingfeng Ge ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Single Layer ◽  
Chemical Oxidation ◽  
High Concentration ◽  
Forming Process ◽  
Selective Determination ◽  
Preparation Strategy

Two-dimensional (2D) MXenes have shown a great potential for chemical sensing due to their electric properties. In this work, a Ti3C2Tx/polypyrrole (MXene/PPy) nanocomposite has been synthesized and immobilized into a glassy carbon electrode to enable the simultaneous recognition of dopamine (DA) and uric acid (UA) under the interference of ascorbic acid (AA). The multilayer Ti3C2Tx MXene was prepared via the aqueous acid etching method and delaminated to a single layer nanosheet, benefiting the in-situ growth of PPy nanowires. The controllable preparation strategy and the compounding of PPy material remain great challenges for further practical application. A facile chemical oxidation method was proposed to regulate magnitude and density during the forming process of PPy nanowire, which promotes the conductivity and the electrochemical active site of this as-prepared nanomaterial. The MXene/PPy nanocomposite-modified electrode exhibited the selective determination of DA and UA in the presence of a high concentration of AA, as well as a wide linear range (DA: 12.5–125 μM, UA: 50–500 μM) and a low detection limit (DA: 0.37 μM, UA: 0.15 μM). More importantly, the simultaneous sensing for the co-existence of DA and UA was successfully achieved via the as-prepared sensor.

Synthesis and characterization of Hg(ii)-ion-imprinted polymer and its application for the determination of mercury in water samples

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 67365-67371 ◽  
Author(s):  
Fengxian Luo ◽  
Shuiying Huang ◽  
Xiaodong Xiong ◽  
Xiaoqi Lai
Keyword(s):  
Water Samples ◽  
Synthesis And Characterization ◽  
Ion Imprinted Polymer ◽  
Imprinted Polymer ◽  
Selective Determination ◽  
Ion Imprinted

Hg(ii)-ion-imprinted polymer for the sensitive and selective determination of mercury in water samples.

Controlled green synthesis and characterization of CeO2 nanostructures as materials for the determination of ascorbic acid

2017 ◽  
Vol 241 ◽  
pp. 772-781 ◽  
Author(s):  
Fatemeh Sadat Sangsefidi ◽  
Masoud Salavati-Niasari ◽  
Samaneh Mazaheri ◽  
Mohammad Sabet
Keyword(s):  
Ascorbic Acid ◽  
Green Synthesis ◽  
Synthesis And Characterization

Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Mai Ngọc Tuan Anh
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Ascorbic Acid ◽  
Silver Nitrate ◽  
Sodium Borohydride ◽  
Trisodium Citrate ◽  
Synthesis And Characterization ◽  
Silver Nanoplates ◽  
Seed Mediated

Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

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