A simple and template free synthesis of branched ZnO nanoarchitectures for sensor applications

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 64075-64084 ◽  
Author(s):  
Ganesh Kumar Mani ◽  
John Bosco Balaguru Rayappan
Keyword(s):  
Room Temperature ◽  
Sensor Applications ◽  
Simple Chemical ◽  
Chemical Technique ◽  
Template Free

Branched ZnO nanoarchitectures synthesized by a simple chemical technique and used as a room temperature acetaldehyde sensor.

Chemical Confirmation of Diethylstilbestrol Residues in Beef Livers

1976 ◽  
Vol 59 (4) ◽  
pp. 817-820
Author(s):  
John Joseph Ryan ◽  
Jean-Claude Pilon
Keyword(s):  
Liquid Chromatography ◽  
Electron Capture ◽  
Room Temperature ◽  
Electron Capture Detection ◽  
Gas Liquid Chromatography ◽  
Beef Liver ◽  
Simple Chemical ◽  
Chemical Technique ◽  
Cis And Trans

Abstract A simple chemical technique was developed to confirm the presence of diethylstilbestrol (DES) residues in beef tissues at 2 ppb. The DES-trifluoroacetate (TFA) from the previously published method is hydrolyzed in water-methanol at 55°C for 20 min to free DES which is then extracted into benzene. Trimethylamine and a small amount of heptafluorobutyric (HFB) anhydride are added to effect the smooth conversion of DES to its di-HFB at either room temperature or 60°C. DES-HFB is determined by gas-liquid chromatography with electron capture detection on a 6′ × 4 mm id column of 3% OV-210 at 190°C. This procedure yields 2 peaks for DES-HFB (retention times 2.7 and 4.8 min for the cis and trans, respectively) which are resolved from the 2 DES-TFA peaks (retention times 2.3 and 3.3 min for cis and trans, respectively). The sensitivity of detection of DES-HFB is increased by a factor of 4–5 over that for DES-TFA. This chemical technique was successfully applied to purified extracts of beef liver fortified with DES at 2–10 ppb with recoveries from 60 to 110%.

Unraveling Hydrogen Adsorption Kinetics of Bimetallic Au–Pt Nanoisland-Functionalized Carbon Nanofibers for Room-Temperature Gas Sensor Applications

2020 ◽  
Vol 124 (13) ◽  
pp. 7144-7155 ◽  
Author(s):  
Keerthi G. Nair ◽  
Vishnuraj Ramakrishnan ◽  
Rajesh Unnathpadi ◽  
Karthikeyan. K. Karuppanan ◽  
Biji Pullithadathil
Keyword(s):  
Gas Sensor ◽  
Carbon Nanofibers ◽  
Adsorption Kinetics ◽  
Room Temperature ◽  
Hydrogen Adsorption ◽  
Sensor Applications ◽  
Kinetics Of

A comparison of the chemical and dissectible carcass composition of New Zealand Romney Marsh ewes

1963 ◽  
Vol 60 (3) ◽  
pp. 285-289 ◽  
Author(s):  
M. J. Ulyatt ◽  
R. A. Barton
Keyword(s):  
New Zealand ◽  
Carcass Composition ◽  
The Other ◽  
Simple Chemical ◽  
Chemical Technique ◽  
Statistical Relationships

Data from the chemical and dissection analyses of thirty-nine New Zealand Romney Marsh ewe carcasses are presented and compared. One side of each carcass was dissected into muscle, fat, and bone and the other side was totally ground and chemically analysed for water, fat, protein, and ash. There were strong statistical relationships between the two methods of carcass analysis and accordingly the quicker and more simple chemical technique could replace dissection in many carcass studies.

scholarly journals Room temperature sol-gel fabrication and functionalization for sensor applications

2012 ◽  
Vol 3 (2) ◽  
pp. 168-177 ◽  
Author(s):  
George Huyang ◽  
John Canning ◽  
Ingemar Petermann ◽  
David Bishop ◽  
Andrew McDonagh ◽  
...  
Keyword(s):  
Room Temperature ◽  
Sol Gel ◽  
Sensor Applications

scholarly journals Photosensitive Organic-Inorganic Hybrid Materials for Room Temperature Gas Sensor Applications

Nanomaterials ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 671 ◽  
Author(s):  
Marina Rumyantseva ◽  
Abulkosim Nasriddinov ◽  
Svetlana Vladimirova ◽  
Sergey Tokarev ◽  
Olga Fedorova ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Room Temperature ◽  
Single Point ◽  
Red Light ◽  
Chemical Precipitation ◽  
Sensor Applications ◽  
Semiconductor Oxides ◽  
Ms Analysis ◽  
Vis Spectroscopy ◽  
Homo And Lumo

In this work, the hybrids based on nanocrystalline SnO2 or In2O3 semiconductor matrixes and heterocyclic Ru(II) complex are studied as materials for gas sensors operating at room temperature under photoactivation with visible light. Nanocrystalline semiconductor oxides are obtained by chemical precipitation with subsequent thermal annealing and characterized by XRD, SEM and single-point BET methods. The heterocyclic Ru(II) complex is synthesized for the first time and investigated by 1H NMR, 13C NMR APT, MALDI-MS analysis, and UV-Vis spectroscopy. The HOMO and LUMO energies of the Ru(II) complex are calculated from cyclic voltammetry data. The hybrid materials are characterized by TGA-MS analysis and EDX mapping. The optical properties of hybrids are studied by UV-Vis spectroscopy in the diffuse reflection mode. The investigation of spectral dependencies of photoconductivity of hybrid samples demonstrates that the role of organic dye consists in shifting the photosensitivity range towards longer wavelengths. Sensor measurements demonstrate that hybrid materials are able to detect NO2 in the concentration range of 0.25–2 ppm without the use of thermal heating under periodic illumination with even low-energy long-wavelength (red) light.

A mesoporous Ni3N/NiO composite with a core–shell structure for room temperature, selective and sensitive NO2 gas sensing

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 42917-42922 ◽  
Author(s):  
Mingming Zou ◽  
Hu Meng ◽  
Fengdong Qu ◽  
Liang Feng ◽  
Minghui Yang
Keyword(s):  
Shell Structure ◽  
Room Temperature ◽  
Gas Sensing ◽  
Core Shell ◽  
Template Free ◽  
Core Shell Structure

Mesoporous Ni3N/NiO composites with core–shell structure were synthesized by a template free method, demonstrate a significant improvements both in sensitivity and in selectivity for NO2 gas sensing at room temperature.

Ni–Co alloy nanostructures anchored on mesoporous silica nanoparticles for non-enzymatic glucose sensor applications

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57804-57814 ◽  
Author(s):  
M. Ranjani ◽  
Y. Sathishkumar ◽  
Yang Soo Lee ◽  
Dong Jin Yoo ◽  
Ae Rhan Kim ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Glucose Sensor ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Mesoporous Silica Nanoparticles ◽  
Chemical Reduction Method ◽  
Sensor Applications ◽  
Simple Chemical ◽  
Active Channels

Uniform sized Ni–Co alloy nanoparticles were effectively confined over the active channels of mesoporous silica nanoparticles (MSN) using a simple chemical reduction method, and the resultant nanostructures exhibited a spherical configuration with a mean diameter of 5 nm.

Template-free electrodeposition of tellurium nanostructures in a room-temperature ionic liquid

2012 ◽  
Vol 24 ◽  
pp. 57-60 ◽  
Author(s):  
Jonathan Szymczak ◽  
Sophie Legeai ◽  
Sebastien Diliberto ◽  
Sylvie Migot ◽  
Nicolas Stein ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Template Free
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