Silver nanoclusters functionalized by chromotropic acid and layered double hydroxides for the turn-on detection of melamine

2016 ◽  
Vol 4 (25) ◽  
pp. 6104-6109 ◽  
Author(s):  
He Ren ◽  
Mingzhe Li ◽  
Yanyan Fu ◽  
Lan Jin
Keyword(s):  
Layered Double Hydroxides ◽  
High Selectivity ◽  
Ultrathin Film ◽  
Chromotropic Acid ◽  
Silver Nanoclusters ◽  
Practical Utility ◽  
Turn On ◽  
Double Hydroxides

A fluorescent ultrathin film (CTA-AgNCs/LDH) is developed for the determination of melamine with high selectivity, low detection and practical utility.

Selective hydrogenation of 2-pentenal using highly dispersed Pt catalysts supported on ZnSnAl mixed metal oxides derived from layered double hydroxides

2020 ◽  
Vol 10 (4) ◽  
pp. 1106-1116
Author(s):  
Huanjun Wang ◽  
Xiaocheng Lan ◽  
Shiqing Wang ◽  
Babar Ali ◽  
Tiefeng Wang
Keyword(s):  
Metal Oxides ◽  
Layered Double Hydroxides ◽  
Selective Hydrogenation ◽  
High Selectivity ◽  
Mixed Metal Oxides ◽  
Pt Catalysts ◽  
Mixed Metal ◽  
Highly Dispersed ◽  
Double Hydroxides

Highly dispersed Pt catalysts supported on ZnSnAl mixed metal oxides showed high selectivity for 2-pentenol in selective hydrogenation of 2-pentenal.

Sorption Catalytic Determination of Copper(II) and L-α-alanine on Mg-, Al-Layered Double Hydroxides

2016 ◽  
Vol 50 (6) ◽  
pp. 964-981 ◽  
Author(s):  
Yuliya Yu. Petrova ◽  
Ekaterina V. Sevast’yanova ◽  
Elena V. Bulatova ◽  
Marina I. Makhanova
Keyword(s):  
Layered Double Hydroxides ◽  
Catalytic Determination ◽  
Double Hydroxides ◽  
Determination Of Copper

scholarly journals A New Clark-Type Layered Double Hydroxides-Enzyme Biosensor for H2O2 Determination in Highly Diluted Real Matrices: Milk and Cosmetics

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1878
Author(s):  
Mauro Tomassetti ◽  
Riccardo Pezzilli ◽  
Giuseppe Prestopino ◽  
Francesco Di Biagio ◽  
Corrado Di Natale ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Limit Of Detection ◽  
Gas Diffusion ◽  
Milk Samples ◽  
Low Concentrations ◽  
Enzyme Biosensor ◽  
H2o2 Determination ◽  
Double Hydroxides ◽  
Real Matrices

A new catalase amperometric biosensor for hydroperoxides detection has been built as part of research aimed at the development of biosensors based on layered double hydroxides (LDH) used as support for enzyme immobilization. The fabricated device differs from those developed so far, usually based on an LDH enzyme nanocomposite adsorbed on a glassy carbon (GC) electrode and cross-linked by glutaraldehyde, since it is based on an amperometric gas diffusion electrode (Clark type) instead of a GC electrode. The new biosensor, which still uses LDH synthesized by us and catalase enzyme, is robust and compact, shows a lower LOD (limit of detection) value and a linearity range shifted at lower concentrations than direct amperometric GC biosensor, but above all, it is not affected by turbidity or emulsions, or by the presence of possible soluble species, which are reduced to the cathode at the same redox potential. This made it possible to carry out accurate and efficient determination of H2O2 even in complex or cloudy real matrices, also containing very low concentrations of hydrogen peroxide, such as milk and cosmetic products, i.e., matrices that would have been impossible to analyze otherwise, using conventional biosensors based on a GC–LDH enzyme. An inaccuracy ≤7.7% for cosmetic samples and ≤8.0% for milk samples and a precision between 0.7 and 1.5 (as RSD%), according to cosmetic or milk samples analyzed, were achieved.

Determination of alizarin red S based on layered double hydroxides-improved chemiluminescence from hydrogen peroxide and luminol

2017 ◽  
Vol 9 (46) ◽  
pp. 6468-6473 ◽  
Author(s):  
Feng Pan ◽  
Yilin Zhang ◽  
Zhiqin Yuan ◽  
Chao Lu
Keyword(s):  
Hydrogen Peroxide ◽  
Layered Double Hydroxides ◽  
Alizarin Red S ◽  
Alizarin Red ◽  
Double Hydroxides

Selective alizarin red S detection based on the layered double hydroxides-improved chemiluminescence from hydrogen peroxide and luminol is presented.

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