Oxides
These compounds play a crucial role in numerous scientific and industrial applications, from materials science and catalysis to energy storage and electronics.
Oxides exhibit a wide range of physical and chemical properties, making them invaluable for a variety of research and development purposes.
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Most cited protocols related to «Oxides»
Free intracellular radicals were detected with dihydrorhodamine 123, dichlorodihydrofluorescein diacetate (dichlorofluorescin diacetate), or dihydroethidium (hydroethidine;
Free spin trap reagents N-tert-butyl-α−phenylnitrone (PBN;
To determine frequencies of morphological phenotypes (TUNEL, Annexin V, DAPI, dihydrorhodamine 123), at least 300 cells of three independent experiments were evaluated.
To verify that containment in the exposure chamber did not cause an unintended biologic response, Sham/Control exposures (that matched the exposure duration of the experimental groups) were performed throughout the course of these experiments. Because no discernable systemic or microvascular effect was observed in any condition, the data from these experiments were combined into a single "Sham/Control" group. Furthermore, the systemic and microvascular responses of this "Sham/Control" group were not different from those observed in naive rats (data not shown).
The individual samples were then labeled using the Ek'balam algorithm (
Most recents protocols related to «Oxides»
Example 1
Provided is a preparation method for an A-site high-entropy nanometer metal oxide (Gd0.4Er0.3La0.4Nd0.5Y0.4)(Zr0.7, Sn0.8, V0.5)O7 with high conductivity, the method including the following steps.
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- (1) Gd(NO3)3, Er(NO3)3, La(NO3)3, Nd(NO3)3, Y(NO3)3, ZrOSO4, SnC14 and NH4VO3 were taken at a molar ratio of 0.4:0.3:0.4:0.5:0.4:0.7:0.8:0.5, added to a mixed solution of deionized water/absolute ethyl alcohol/tetrahydrofuran at a mass ratio of 0.3:3:0.5, and stirred for five minutes to obtain a mixed liquid I. The ratio of the total mass of Gd(NO3)3, Er(NO3)3, La(NO3)3, Nd(NO3)3, Y(NO3)3, ZrOSO4, SnC14 and NH4VO3 to that of the mixed solution of deionized water/absolute ethyl alcohol/tetrahydrofuran (0.3:3:0.5) is 12.6%.
- (2) Para-phenylene diamine, hydrogenated tallowamine, sorbitol and carbamyl ethyl acetate at a mass ratio of 1:0.2:7:0.01 were taken, added to propyl alcohol, and stirred for one hour to obtain a mixed liquid II. The ratio of the total mass of the para-phenylene diamine, the hydrogenated tallowamine, the sorbitol and the carbamyl ethyl acetate to that of the propyl alcohol is 7.5%;
- (3) The mixed liquid I obtained in step (1) was heated to 50° C., and the mixed liquid II obtained in step (2) was dripped at the speed of one drop per second, into the mixed liquid I obtained in step (1) with stirring and ultrasound, and heated to the temperature of 85° C. after the dripping is completed and the temperature was maintained for three hours while stopping stirring, and the temperature was decreased to the room temperature, so as to obtain a mixed liquid III. The mass ratio of the mixed liquid I to the mixed liquid II is 10:4.
- (4) The mixed liquid III was added to an electrolytic cell with using a platinum electrode as an electrode and applying a voltage of 3 V to two ends of the electrode, and reacting for 13 minutes, to obtain a mixed liquid IV.
- (5) The mixed liquid IV obtained in step (4) was heated with stirring, another mixed liquid II was taken and dripped into the mixed liquid IV obtained in step (4) at the speed of one drop per second. The mass ratio of the mixed liquid II to the mixed liquid IV is 1.05:1.25; and after the dripping is completed, the temperature was decreased to the room temperature under stirring, so as to obtain a mixed liquid V.
- (6) A high-speed shearing treatment was performed on the mixed liquid V obtained in step (5) by using a high-speed shear mulser at the speed of 20000 revolutions per minute for one hour, so as to obtain a mixed liquid VI.
- (7) Lyophilization treatment was performed on the mixed liquid VI to obtain a mixture I;
- (8) The mixture I obtained in step (7) and absolute ethyl alcohol were mixed at a mass ratio of 1:2 and uniformly stirred, and were sealed at a temperature of 210° C. for performing solvent thermal treatment for 18 hours. The reaction was cooled to the room temperature, the obtained powder was collected by centrifugation, washed with deionized water and absolute ethyl alcohol eight times respectively, and dried to obtain a powder I.
- (9) The powder I obtained in step (8) and ammonium persulfate was uniformly mixed at a mass ratio of 10:1, and sealed and heated to 165° C. The temperature was maintained for 13 hours. The reaction was cooled to the room temperature, the obtained mixed powder was washed with deionized water ten times, and dried to obtain a powder II.
- (10) The powder II obtained in step (4) was placed into a crucible, heated to a temperature of 1500° C. at a speed of 3° C. per minute. The temperature was maintained for 7 hours. The reaction was cooled to the room temperature, to obtain an A-site high-entropy nanometer metal oxide (Gd0.4Er0.3La0.4Nd0.5Y0.4)(Zr0.7, Sn0.8, V0.5)O7 with high conductivity.
As observed via an electron microscope, the obtained A-site high-entropy nanometer metal oxide with high conductivity is a powder, and has microstructure of a square namometer sheet with a side length of about 4 nm and a thickness of about 1 nm.
The product powder was taken and compressed by using a powder sheeter at a pressure of 550 MPa into a sheet. Conductivity of the sheet is measured by using the four-probe method, and the conductivity of the product is 2.1×108 S/m.
A commercially available ITO (indium tin oxide) powder is taken and compressed by using a powder sheeter at a pressure of 550 MPa into a sheet, and the conductivity of the sheet is measured by using the four-probe method.
As measured, the conductivity of the commercially available ITO (indium tin oxide) is 1.6×106 S/m.
Example 2
As discussed herein above, the disclosed methods improve the antiseptic properties of a dental implant without using charged metallic ions via conversion of the nitrogen moieties in titanium nitride surface to a positively charged quaternary ammonium via a Menschutkin reaction.
To prepare the antibacterial quaternized TiN surface, an implant which has been coated with TiN was used. The implant was cleaned to improve yield. The implant was washed with two solvents in sequence, acetone and isopropanol, to remove any dust particulate and other residue. The native oxide layer was removed by sonicating in 1:10 HCl:deionized water for 1 minute. This treatment additionally removes any residue that may not have been removed by the solvents. Acetonitrile was used as the solvent; however, any solvent may be used with preference for polar solvents giving improved reaction times (Stanger K., et al. J Org Chem. 2007 72(25):9663-8; Harfenist M., et al. J Am Chem Soc 1957 79(16):4356-4358). An excess of allyl bromide was added to the solvent and continuously stirred. The sample was then submerged in the solution, and full reaction of the surface occurred within about 60 minutes, as confirmed by contact angle measurement. A reference was also measured by submerging in solvent for the duration with no reactant to ensure any changes in surface properties was due to the quaternization.
Without wishing to be bound by a particular theory, the increased hydrophobicity of the treated surfaces can be due to the presence of the allyl groups on the surface which will impart some hydrophobicity. The contact angle measurements provide information on whether or not a reaction has occurred and whether it has saturated.
The biocidal activity was tested using live bacteria cultures from a patient's mouth, which provides the full flora to act against rather than targeting an individual strain of bacteria. The bacteria was incubated on the sample surface using several bacteria film thicknesses. The thickness is defined by keeping the same interaction surface area while varying the volume of bacteria solution added. Across two separate patients and several separate growths, within 4 hours 40-50% reduction in bacteria unit counts were observed for quaternized TiN as compared to traditional Titanium implants, outperforming traditional TiN coatings.
Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of skill in the art to which the disclosed invention belongs. Publications cited herein and the materials for which they are cited are specifically incorporated by reference.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the scope or spirit of the disclosure. Other aspects of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Example 1
Preparation of AgNPs@CMC, FeNPs@CMC and AgNPs@Fe@CMC Nanocomposites
The AgNPs@CMC, FeNPs@CMC and AgNPs@Fe@CMC were separately prepared via the reduction co-precipitation method. In this method, 100 mL of an aqueous solution of metal salt (0.05M) was prepared and 2 g of CMC extract was added. The system was kept under stirring (500 rpm) at room temperature for 30 min. Thereafter, 0.5M of sodium borohydride was added to the solution containing the metal ion-loaded CMC under continuous stirring for 1 hour. The metal oxide loaded CMC was isolated, washed with distilled water, and dried in an oven at 60° C. for 24 hour. The silver nanoparticle-loaded CMC was labeled as AgNPs@CMC and iron nanoparticle CMC was labeled as FeNPs@CMC.
Example 2
A planar conducting substrate, such as Ni and Cu foils, or a 3-D Ni foam was immersed in 1M H2SO4 to remove the oxide layer and then transferred to Ni—Cu electrolyte (0.1 M nickel chloride, 0.5 M nickel sulfamate, 0.0025 M copper chloride and 0.323 M boric acid). After electrodeposition at a current of −350 mA for 150 coulombs, the sample was turned upside down, and the surface pointing to the reference electrode was also reversed. Then another deposition is continued. Totally four such depositions were carried out on each sample. Next, the obtained Ni—Cu dendrites on porous nickel foam were enforced by annealing in nitrogen (50 SCCM) and hydrogen (5 SCCM) gas atmosphere at the temperature of 1000° C. for 5 min.
Example 2
The Bioceramic compositions in Table 2, below, were prepared by mixing the liquid component (carrier) with the solid components in a mechanical stirrer, in the following sequence: sorosilicate, radiopacifier, rheology control agent and setting agent with speed below 500 rpm, approximately 45 minutes until complete homogenization.
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More about "Oxides"
These versatile materials play a crucial role in numerous scientific and industrial applications, from materials science and catalysis to energy storage and electronics.
Oxide compounds exhibit a wide array of physical and chemical properties, making them invaluable for a variety of research and development purposes.
Sodium hydroxide (NaOH), also known as caustic soda, is a common inorganic compound that can be used in conjunction with oxide research.
Hydrochloric acid (HCl) is another important chemical that may be utilized in oxide-related studies.
Dimethyl sulfoxide (DMSO) is a polar aprotic solvent that can be employed for various oxide research applications.
Ethanol (EtOH) and methanol (MeOH) are alcoholic solvents that find use in oxide-based experiments, while acetonitrile (ACN) is a polar organic solvent commonly used in this field.
Oleic acid is a fatty acid that can play a role in the synthesis and stabilization of oxide nanoparticles.
Fetal bovine serum (FBS) is a commonly used supplement in cell culture media, which may be relevant for studying the biocompatibility and cellular interactions of oxide materials. 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) is a spin trap agent that can be utilized for the detection and characterization of free radicals and reactive oxygen species in oxide-related systems.
The CycleTEST PLUS DNA Reagent Kit is a tool that can be employed for the analysis of cell cycle and DNA content, which may be applicable in oxide-based biological research.
Explore the latest advancements in oxide research with PubCompare.ai, the AI-powered platform that revolutionizes oxide research protocols.
Easily locate the best protocols from literature, pre-prints, and patents, with unparalleed reproducibility and accuracy.
Our advanced comparison tools help you identify the optimal protocols and products, ensureing your oxide research is efficient and reliable.
Expereince the future of oxide research with PubCompare.ai.