Non-enzymatic simultaneous detection of l-glutamic acid and uric acid using mesoporous Co3O4 nanosheets

RSC Advances ◽  
2016 ◽  
Vol 6 (84) ◽  
pp. 80511-80521 ◽  
Author(s):  
Mohammad Musarraf Hussain ◽  
Mohammed M. Rahman ◽  
Abdullah M. Asiri ◽  
Md. Rabiul Awual
Keyword(s):  
Uric Acid ◽  
Low Temperature ◽  
Glutamic Acid ◽  
Simultaneous Detection ◽  
Chemical Technique ◽  
Wet Chemical ◽  
Wet Chemical Technique

Co3O4 nanosheets were synthesized by wet chemical technique at low-temperature in alkaline phase.

A novel approach towards hydrazine sensor development using SrO·CNT nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (70) ◽  
pp. 65338-65348 ◽  
Author(s):  
Mohammed M. Rahman ◽  
Mohammad Musarraf Hussain ◽  
Abdullah M. Asiri
Keyword(s):  
Carbon Nanotube ◽  
Low Temperature ◽  
Strontium Oxide ◽  
Sensor Development ◽  
Novel Approach ◽  
Chemical Technique ◽  
Wet Chemical ◽  
Oxide Nanoparticle ◽  
Wet Chemical Technique ◽  
Hydrazine Sensor

Strontium oxide nanoparticle decorated carbon nanotube nanocomposites (SrO·CNT NCs) were prepared in alkaline medium using a wet-chemical technique at low temperature.

A New Lithium Iron Phosphate LiFe2P3O10 Synthesized at 600 °C from Precursor Obtained by Wet Chemistry

2006 ◽  
Vol 972 ◽  
Author(s):  
Atmane Ait-Salah ◽  
Chintalapalle V Ramana ◽  
François Gendron ◽  
Jean-François Morhange ◽  
Alain Mauger ◽  
...  
Keyword(s):  
Lithium Iron Phosphate ◽  
Iron Phosphate ◽  
Voltage Range ◽  
Wet Chemistry ◽  
Cell Parameters ◽  
Antiferromagnetic Ordering ◽  
Chemical Technique ◽  
Wet Chemical ◽  
Wet Chemical Technique

AbstractWe present the synthesis and characterization of a novel lithium iron polyphosphate LiFe2P3O10 prepared by wet-chemical technique from nitrate precursors. The crystal system is shown to be monoclinic (P21/m space group) and the refined cell parameters are a=4.596 Å, b=8.566 Å, c=9.051 Å and β=97.46°. LiFe2P3O10 has a weak antiferromagnetic ordering below the Néel temperature TN=19 K. Electrochemical measurements carried out at 25 °C in lithium cell with LiPF6-EC-DEC electrolyte show a capacity 70 mAh/g in the voltage range 2.7-3.9 V.

Drop Solution Calorimetric Studies of Interface Enthalpy of Cubic Silver (I) Oxide (Ag2O) Nanocrystals

2021 ◽  
Vol 878 ◽  
pp. 73-80
Author(s):  
Khansaa Al-Essa ◽  
A V Radha ◽  
Alexandra Navrotsky
Keyword(s):  
Thermodynamic Cycle ◽  
Solution Calorimetry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Areas ◽  
Chemical Technique ◽  
Crystallite Sizes ◽  
Wet Chemical ◽  
Wet Chemical Technique ◽  
Calorimetric Studies

The nanoscale, cubic silver (I) oxide (Ag2O.nH2O) with different particles sizes and surface areas were synthesized by a wet chemical technique. The prepared crystallite size ranges were from (33.3±0.3 to 39.4±0.4 nm). Interface areas were estimated by comparing the surface areas measured by N2 adsorption to the crystallite sizes refined from X-ray diffraction data. The interface enthalpy of Ag2O.nH2O nanocrystal was measured using isothermal acid solution calorimetry in 25%HNO3 at 26°C. The interface enthalpy was verified by utilizing thermodynamic cycle. The enthalpies of drop solution (ΔHds) for Ag2O.nH2O are exothermic and range from (-62.228±0.197) to (-64.025±0.434 kJ/mol), while its interface enthalpy is (0.842±0.508 J/m2). This work provides the first calorimetric measurement of the interface enthalpy of nanocrystalline silver (I) oxide (Ag2O.nH2O).

DyCrxFe(1-x)O3 nanoparticles prepared by wet chemical technique for photocatalytic applications

2020 ◽  
Vol 46 (17) ◽  
pp. 26675-26681 ◽  
Author(s):  
Hira ◽  
Aysha Daud ◽  
Sonia Zulfiqar ◽  
Philips O. Agboola ◽  
Imran Shakir ◽  
...  
Keyword(s):  
Chemical Technique ◽  
Wet Chemical ◽  
Wet Chemical Technique ◽  
Photocatalytic Applications

The Determination of Iron in Used Lubricating Oil

1971 ◽  
Vol 25 (6) ◽  
pp. 668-671 ◽  
Author(s):  
Gerald S. Golden
Keyword(s):  
Internal Standard ◽  
Rotating Disk ◽  
Lubricating Oil ◽  
X Ray ◽  
Chemical Technique ◽  
Used Lubricating Oil ◽  
Wet Chemical ◽  
Wet Chemical Technique ◽  
Instrumental Methods

Iron analyses performed on used gas turbine lubricating oil samples by several variations of rotating disk–spark emission spectrography, atomic absorptiometry, and x-ray fluorescence spectrometry are compared with a quantitative wet chemical technique. The results indicate that emission spectrography with a cobalt internal standard, atomic absorptiometry with a nitrous oxide–acetylene flame, and x-ray fluorescence, both dispersive and nondispersive, are the most reliable instrumental methods. The iron contained in the samples exists primarily as particulates 1 µ or less in diameter.

scholarly journals Deposition of Cell Culture Coatings Using a Cold Plasma Deposition Method

2020 ◽  
Vol 10 (19) ◽  
pp. 6670
Author(s):  
Denis O’Sullivan ◽  
Hazel McArdle ◽  
Sing Wei Ng ◽  
Paula Bourke ◽  
Robert Forster ◽  
...  
Keyword(s):  
Thin Films ◽  
Cell Culture ◽  
Cold Plasma ◽  
Cell Activity ◽  
Single Step ◽  
Cell Culture Techniques ◽  
Culture Techniques ◽  
Chemical Technique ◽  
Wet Chemical ◽  
Wet Chemical Technique

Collagen coatings were applied onto polystyrene microplates using a cold atmospheric pressure plasma process. The coatings were compared to standard wet chemical collagen thin films using microscopy, surface energy, infra-red spectroscopy, electrophoresis, and cell culture techniques. Thin films were also deposited on gold electrodes using both coating methods and their structural and barrier properties probed using cyclic voltammetry. While the wet chemical technique produced a thicker deposit, both films appear equivalent in terms of coverage, porosity, structure, and chemistry. Significantly, the cold plasma method preserves both the primary and secondary structure of the protein and this results in high biocompatibility and cell activity that is at least equivalent to the standard wet chemical technique. The significance of these results is discussed in relation to the benefits of a single step plasma coating in comparison to the traditional multi-step aseptic coating technique.

Development of Ca(OH)2 Nanosorbent for Intermediate-High Temperature CO2 Capture via Wet Chemical Route in N,N-Dimethylformamide Solvent

2014 ◽  
Vol 911 ◽  
pp. 410-414
Author(s):  
Farah Diana Mohd Daud ◽  
Srimala Sreekantan ◽  
Abdul Rahman Mohamed
Keyword(s):  
Calcium Nitrate ◽  
Intermediate Temperature ◽  
Morphological Properties ◽  
Calcium Nitrate Tetrahydrate ◽  
Chemical Route ◽  
Before And After ◽  
Water Media ◽  
Chemical Technique ◽  
Wet Chemical ◽  
Wet Chemical Technique

CO2 is the major anthropogenic greenhouse gas which contributes to the increasing atmospheric CO2 concentration, leading to serious global warming and climate change. Thus, the present paper investigates the CO2-capture performance of synthesized calcium hydroxides, Ca (OH)2nanosorbent at intermediate-high temperatures which are 350, 450, 550 and 650oC. CO2 adsorption performance was analysed by thermo-gravimetricanalyser (TGA).The CO2 adsorption temperature strongly influenced the capture performance of the sorbent.Facile wet chemical technique was utilized to synthesize Ca (OH)2 nanorod sorbent structures using calcium nitrate tetrahydrate, Ca (NO3)2.4H2O as the calcium precursor, and precipitated with sodium hydroxides (NaOH) in N,N-Dimethylformamide (DMF) mixed deionized (DI) water media at 55 oC. X-ray diffraction (XRD) result exhibitedCa (OH)2hexagonal crystal structures. The Ca (OH)2 particle size and morphological properties before and after CO2 adsorption are studied by Field Emission Scanning Electron Microscopy (FESEM). The FESEM image indeed showed the rod like shape of Ca (OH)2nanosorbent with rod length approximately700 nm while the diameter 140nm. When CO2 molecules were adsorbed by Ca (OH)2nanosorbent, the nanorodstructures are changed to rigid interconnected each other like a lump shaped. Ca (OH)2nanosorbentseems to be a potentially good absorbent for capturing CO2when increased temperatures. However, at intermediate temperature 350 and 450oC, the synthesized Ca (OH)2nanosorbent demonstrated higher CO2 adsorption (141 to 220 mg/g CO2) than others intermediate temperature CO2 sorbent such as layer double hydroxides (LDH), lithium zirconates (LiZrO3) and hydrotalcite.

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