MoS2/ZnO-Heterostructures-Based Label-Free, Visible-Light-Excited Photoelectrochemical Sensor for Sensitive and Selective Determination of Synthetic Antioxidant Propyl Gallate

2019 ◽  
Vol 91 (16) ◽  
pp. 10657-10662 ◽  
Author(s):  
Fangjie Han ◽  
Zhongqian Song ◽  
Mian Hasnain Nawaz ◽  
Mengjiao Dai ◽  
Dongfang Han ◽  
...  
Keyword(s):  
Visible Light ◽  
Propyl Gallate ◽  
Label Free ◽  
Synthetic Antioxidant ◽  
Selective Determination ◽  
Photoelectrochemical Sensor

Encapsulation of hemin in Fe-based metal-organic frameworks and its application for the direct determination of aflatoxin M1

2021 ◽  
pp. 1-10
Author(s):  
F. Jahangiri-Dehaghani ◽  
H.R. Zare ◽  
Z. Shekari
Keyword(s):  
Electrochemical Impedance ◽  
Metal Organic Frameworks ◽  
Direct Determination ◽  
Differential Pulse ◽  
Aflatoxin M1 ◽  
Label Free ◽  
Electrochemical Aptasensor ◽  
Selective Determination ◽  
Metal Organic

A label-free electrochemical aptasensor was constructed for the sensitive and selective determination of AFM1. For preparation of the aptasensor, the AFM1 aptamer was immobilised on the surface of a glassy carbon electrode modified with hemin encapsulated in Fe-based metal-organic frameworks (hemin@Fe-MIL-101). The morphology and the structure of Fe-MIL-101 and hemin@Fe-MIL-101 were evaluated by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray powder diffraction and Brunauer-Emmett-Teller-N2 sorption methods. Electrochemical impedance spectroscopy and cyclic voltammetry were performed to monitor the fabrication process of the electrochemical aptasensor. The electrochemical reduction current of hemin encapsulated in Fe-MIL-101 serves as a signal for the quantitative determination of AFM1. Differential pulse voltammetry was done to determine the AFM1 concentration in the linear range of 1.0×10-1-100.0 ng/ml. The detection limit of AFM1 was estimated to be 4.6×10-2 ng/ml. Finally, the fabricated aptasensor was applied to determine AFM1 in raw and boiled milk samples.

Synthesis of fluorescent ionic liquid-functionalized silicon nanoparticles with tunable amphiphilicity and selective determination of Hg2+

2018 ◽  
Vol 6 (48) ◽  
pp. 8214-8220 ◽  
Author(s):  
Quan Li ◽  
Kaite Peng ◽  
Yanzhen Lu ◽  
Aoxin Li ◽  
Fenfang Che ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Silicon Nanoparticles ◽  
Selective Detection ◽  
Label Free ◽  
Selective Determination ◽  
Highly Sensitive

Label-free fluorescent ionic liquid-functionalized silicon nanoparticles with tunable amphiphilicity for highly sensitive and selective detection of Hg2+ were synthesized.

A novel label-free fluorescent molecular beacon for the detection of 3′–5′ exonuclease enzymatic activity using DNA-templated copper nanoclusters

2017 ◽  
Vol 41 (18) ◽  
pp. 9718-9723 ◽  
Author(s):  
Jia Ge ◽  
Zhen-Zhen Dong ◽  
Dong-Mei Bai ◽  
Lin Zhang ◽  
Ya-Lei Hu ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Molecular Beacon ◽  
Label Free ◽  
Copper Nanoclusters ◽  
Selective Determination ◽  
Highly Sensitive ◽  
Exo Iii

A label-free biosensor was developed for highly sensitive and selective determination of Exo III based on poly(T) molecular beacon-templated CuNPs.

Selective determination of tobramycin in the presence of streptomycin through the visible light effect on surface plasmon resonance of gold nanoparticles

2014 ◽  
Vol 116 ◽  
pp. 206-215 ◽  
Author(s):  
Hellen S. Santos ◽  
Gabriela M. de França ◽  
Eric C. Romani ◽  
Dunieskys G. Larrudé ◽  
Alessandra L.M.C. da Cunha ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Light Effect ◽  
Selective Determination

scholarly journals A label-free fluorescent peptide probe for sensitive and selective determination of copper and sulfide ions in aqueous systems

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7426-7435
Author(s):  
Yadan Zhang ◽  
Yunhui Cai ◽  
Yonghui He ◽  
Qinlu Lin ◽  
Jiali Ren ◽  
...  
Keyword(s):  
Pure Water ◽  
Water System ◽  
Label Free ◽  
Selective Determination ◽  
Peptide Probe ◽  
System P ◽  
Fluorescent Peptide ◽  
Sulfide Ions ◽  
Determination Of Copper

A label-free fluorescence “on–off–on” peptide probe for selective determination of Cu2+ and S2− in a pure water system.

Anatase TiO2 based photoelectrochemical sensor for the sensitive determination of dopamine under visible light irradiation

2015 ◽  
Vol 39 (2) ◽  
pp. 1483-1487 ◽  
Author(s):  
Picheng Gao ◽  
Hongmin Ma ◽  
Jiaojiao Yang ◽  
Dan Wu ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Tin Oxide ◽  
Visible Light Irradiation ◽  
Indium Tin Oxide ◽  
Anatase Tio2 ◽  
Oxide Electrode ◽  
Indium Tin Oxide Electrode ◽  
Photoelectrochemical Sensor ◽  
Sensitive Determination

The sensitive photoelectrochemical determination of dopamine was achieved using an indium tin oxide electrode modified with TiO2 nanoparticles.

scholarly journals Label-free, Water-soluble Fluorescent Peptide Probe for a Sensitive and Selective Determination of Copper Ions

2017 ◽  
Vol 33 (2) ◽  
pp. 191-196 ◽  
Author(s):  
Tao YANG ◽  
Fang ZHU ◽  
Tianxiao ZHOU ◽  
Jianzhong CAO ◽  
Yibo XIE ◽  
...  
Keyword(s):  
Copper Ions ◽  
Free Water ◽  
Water Soluble ◽  
Label Free ◽  
Selective Determination ◽  
Peptide Probe ◽  
Fluorescent Peptide ◽  
Determination Of Copper
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