Novel Nanofilm Sensor Based on Poly-(Alizarin Red)/Fe3O4 Magnetic Nanoparticles-Multiwalled Carbon Nanotubes Composite Material for Determination of Nitrite

2016 ◽  
Vol 16 (3) ◽  
pp. 2731-2736 ◽  
Author(s):  
Jianying Qu ◽  
Ying Dong ◽  
Yong Wang ◽  
Tongfang Lou ◽  
Xueping Du ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Composite Material ◽  
Magnetic Nanoparticles ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Alizarin Red

scholarly journals Uraemic Toxins Generated in the Presence of FullereneC60, Carbon-Encapsulated Magnetic Nanoparticles, and Multiwalled Carbon Nanotubes

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Magdalena Popławska ◽  
Hanna Krawczyk
Keyword(s):  
Carbon Nanotubes ◽  
Magnetic Nanoparticles ◽  
Multiwalled Carbon Nanotubes ◽  
Conversion Degree ◽  
Multiwalled Carbon ◽  
Forms Of Carbon

Uraemic toxins—creatol and N-methylguanidine—are generated in conversion of creatinine in water in the presence of various forms of carbon such as fullerene C60, carbon-encapsulated magnetic nanoparticles, and multiwalled carbon nanotubes and oxygen. The conversion degree for creatinine was different for fullerene C60, CEMNPs, and MWCNTs and was 9% (3.6% creatol, 5.4% N-methylguanidine), 35% (12% creatol, 23% N-methylguanidine), and 75% (16% creatol, 59% N-methylguanidine), respectively.

Determination of phthalates in beverages using multiwalled carbon nanotubes dispersive solid-phase extraction before HPLC-MS

2018 ◽  
Vol 41 (12) ◽  
pp. 2613-2622 ◽  
Author(s):  
Javier González-Sálamo ◽  
Javier Hernández-Borges ◽  
María del Mar Afonso ◽  
Miguel Ángel Rodríguez-Delgado
Keyword(s):  
Carbon Nanotubes ◽  
Solid Phase Extraction ◽  
Multiwalled Carbon Nanotubes ◽  
Solid Phase ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Multiwalled Carbon

scholarly journals First Electrochemical Sensor (Screen-Printed Carbon Electrode Modified with Carboxyl Functionalized Multiwalled Carbon Nanotubes) for Ultratrace Determination of Diclofenac

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 781 ◽  
Author(s):  
Agnieszka Sasal ◽  
Katarzyna Tyszczuk-Rotko ◽  
Magdalena Wójciak ◽  
Ireneusz Sowa
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Sensor ◽  
Multiwalled Carbon Nanotubes ◽  
Active Surface Area ◽  
Carbon Electrode ◽  
Multiwalled Carbon ◽  
Screen Printed Carbon Electrode ◽  
Functionalized Multiwalled Carbon Nanotubes ◽  
Screen Printed

A simple, sensitive and time-saving differential-pulse adsorptive stripping voltammetric (DPAdSV) procedure using a screen-printed carbon electrode modified with carboxyl functionalized multiwalled carbon nanotubes (SPCE/MWCNTs-COOH) for the determination of diclofenac (DF) is presented. The sensor was characterized using optical profilometry, SEM, and cyclic voltammetry (CV). The use of carboxyl functionalized MWCNTs as a SPCE modifier improved the electron transfer process and the active surface area of sensor. Under optimum conditions, very sensitive results were obtained with a linear range of 0.1–10.0 nmol L−1 and a limit of detection value of 0.028 nmol L−1. The SPCE/MWCNTs-COOH also exhibited satisfactory repeatability, reproducibility, and selectivity towards potential interferences. Moreover, for the first time, the electrochemical sensor allows determining the real concentrations of DF in environmental water samples without sample pretreatment steps.

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