The following chemicals were used in the studies: titanium(iv ) oxide (Aeroxide P25, >99.5%, Acros Organics), ammonium metavanadate (100%, Merck Millipore), zinc chloride (≥98%, Honeywell Fluka), tin(ii ) chloride dehydrate (98%, Honeywell Fluka), acetonitrile (99.8%, Aldrich), bromobenzene (>99.5%, Aldrich), diphenyl sulphide (98%, Aldrich) and hydrogen peroxide (30%, POCh).
Ammonium metavanadate
Manufactured by Merck Group
Sourced in Germany, United States
Ammonium metavanadate is a chemical compound with the formula NH4VO3. It is a white, crystalline solid that is commonly used as a laboratory reagent and in various industrial applications. The primary function of ammonium metavanadate is to serve as a source of vanadium, which is an important trace element in many chemical processes and analyses.
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Lab products found in correlation
Hydrogen peroxide, by Merck Group (4 mentions)
Hydrochloric acid (hcl), by Merck Group (4 mentions)
Sodium hydroxide (naoh), by Merck Group (4 mentions)
Nitric acid, by Merck Group (4 mentions)
Ethanol, by Merck Group (4 mentions)
Methanol, by Merck Group (2 mentions)
Zinc nitrate hexahydrate, by Merck Group (2 mentions)
Bismuth nitrate pentahydrate, by Merck Group (2 mentions)
Holmium 3 acetate, by Merck Group (2 mentions)
Aeroxide p25, by Thermo Fisher Scientific (1 mentions)
Acetonitrile, by Merck Group (1 mentions)
Bromobenzene, by Merck Group (1 mentions)
Glutaraldehyde ga, by Merck Group (1 mentions)
Bovine serum albumine (bsa), by Merck Group (1 mentions)
Total cl, by Merck Group (1 mentions)
Mgcl2, by Merck Group (1 mentions)
Hydrazinium hydroxide, by Merck Group (1 mentions)
Mini x device, by Microtrac (1 mentions)
Uv 3600i plus, by Shimadzu (1 mentions)
D8 advance, by Bruker (1 mentions)
27 protocols using ammonium metavanadate
1
Synthesis of Multicomponent Catalysts
2
Screen-Printed Electrodes for Biosensing
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Several inks were used in the fabrication of the screen printed electrodes (SPEs), namely Electrodag PF-407 A (carbon ink), Electrodag 6037 SS (silver/silver chloride ink) and Electrodag 452 SS (dielectric ink) all supplied by Acheson Colloiden (Scheemda, The Netherlands). Analytical grade chemicals with no additional purification were used. All solutions were prepared in ultrapure water, conductivity of 0.05 μS/cm (Gen-Pure TKA, Niederelbert, Germany).
Hydrogen tetrachloroaurate (III) trihydrate (HAuCl4), ALP, bovine serum albumine (BSA) and glutaraldehyde (GA) were obtained from Sigma Chemical Co. (St. Louis, MO, USA). p-Nitrophenyl phosphate sodium salt was acquired from Fluka Analytical (Buchs, Switzerland). Ammonium metavanadate (Merck, Darmstadt, Germany) was used as stock solution of vanadium. 28 mM Tris(hydroxymethyl)aminomethane buffer (Aldrich Chemical Co., Buchs, Switzerland) was used together with 19 mM of MgCl2 (Merck) and 0.36 M total Cl−, (Merck) as supporting electrolyte. HCl (Merck) was used to adjust the pH value.
Hydrogen tetrachloroaurate (III) trihydrate (HAuCl4), ALP, bovine serum albumine (BSA) and glutaraldehyde (GA) were obtained from Sigma Chemical Co. (St. Louis, MO, USA). p-Nitrophenyl phosphate sodium salt was acquired from Fluka Analytical (Buchs, Switzerland). Ammonium metavanadate (Merck, Darmstadt, Germany) was used as stock solution of vanadium. 28 mM Tris(hydroxymethyl)aminomethane buffer (Aldrich Chemical Co., Buchs, Switzerland) was used together with 19 mM of MgCl2 (Merck) and 0.36 M total Cl−, (Merck) as supporting electrolyte. HCl (Merck) was used to adjust the pH value.
3
Characterization of Cerium-Vanadium Oxide Catalyst
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All materials and chemical compounds used in this study including cerium nitrate hexahydrate (Ce(NO 3 ) 3 .6H 2 O), ammonium metavanadate (NH 4 VO 3 ), hydrazinium hydroxide (N 2 H 2 OH), nitric acid (HNO 3 (, sodium hydroxide (NaOH) were purchased from Merck and all chemicals were pure. Bentonite as a natural mineral was obtained from Negin Powder Semnan Company (Iran). Distilled water was used during the experiment.
The crystal structure of the material was determined by XRD (X-ray diffraction) (D8-Advance, Bruker, Germany) using Cu Kα radiation (λ = 1.5406 Å) in the 2θ range from 10 to 70°. Fourier transform infrared (FTIR, Magna-IR, spectrophotometer 550 Nicolet in KBr pellets ranging from 400 to 4000 cm -1 ) spectroscopy has been used to study the structure and chemical bonds of the molecule. FESEM (field-emission scanning electron microscope) images was recorded by MIRA3 FE-SEM. Nitrogen adsorption/desorption was done using Belsorp mini x device. BJH analysis was used to record the pore size distribution. The bandgap of the samples was determined using UV-visible diffuse reflection spectra (DRS) equipment (Shimadzu/UV3600Iplus).
The crystal structure of the material was determined by XRD (X-ray diffraction) (D8-Advance, Bruker, Germany) using Cu Kα radiation (λ = 1.5406 Å) in the 2θ range from 10 to 70°. Fourier transform infrared (FTIR, Magna-IR, spectrophotometer 550 Nicolet in KBr pellets ranging from 400 to 4000 cm -1 ) spectroscopy has been used to study the structure and chemical bonds of the molecule. FESEM (field-emission scanning electron microscope) images was recorded by MIRA3 FE-SEM. Nitrogen adsorption/desorption was done using Belsorp mini x device. BJH analysis was used to record the pore size distribution. The bandgap of the samples was determined using UV-visible diffuse reflection spectra (DRS) equipment (Shimadzu/UV3600Iplus).
4
Dye Degradation with Rare-Earth Complexes
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Ammonium metavanadate (NH4VO3), Thulium Nitrate Hexahydrate (Tm(NO3)3·6H2O), N, N'-Bis(salicylidene)ethylenediamine (H2Salen), N, N′-bis(salicylidene)-1,2-phenylenediamine (H2Salophen), and methanol, were acquired from Merck company and applied without further purification. In addition, the organic dyes utilized as pollutants, such as eriochrome black T (EBT), methyl violet (MV), benzoic acid (BA), benzoquinone (BQ), and Ethylenediaminetetraacetic acid (EDTA) were acquired from Sigma-Aldrich.
5
Synthesis of Pluronic-Templated Halloysite Nanomaterials
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Halloysite clay obtained from Yenbai Province (Vietnam) was milled and sieved, then dried in an oven at 100 °C for 24 h, with the following chemical composition (weight %): 32.26 SiO2; 10.67 Al2O3; 7.38 Fe2O3; 0.39 TiO2; 2.75 CuO; 1.25 MgO; 22.70 Na2O; and 22.60 loss on ignition (LOI). Triblock copolymer pluronic P123 (EO20–PO70–EO20, MW = 5800) was used as a template; ammonium metavanadate (NH4VO3, 99%), iron(iii ) chloride hexahydrate (FeCl3·6H2O, 99%), acetic acid (CH3COOH, 99.7%), ethanol (C2H5OH, 99.7%), dibenzothiophene (C12H8S, 99%), n-octane (C8H18, 99%) and hydrogen peroxide (H2O2, 30%) were purchased from Sigma–Aldrich. Concentrated HCl and NaOH aqueous solutions were used as the acid and base sources, respectively. All reagents were analytical grade and were used without further purification.
6
Cloned 6-Phytase Production and Characterization
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Commercial phytase (Smizyme TS G5, Beijing smile) was donated by Golbid Company (Tehran, Iran). This enzyme is a pure cloned 6-phytase derived from E. coli,
expressed in Pichia pastoris. Sodium phytate (P8810), ammonium heptamolybdate, and ammonium metavanadate were from Sigma-Aldrich. All other chemicals used in this study were of analytical grade.
expressed in Pichia pastoris. Sodium phytate (P8810), ammonium heptamolybdate, and ammonium metavanadate were from Sigma-Aldrich. All other chemicals used in this study were of analytical grade.
7
Catalytic Synthesis of Valuable Chemicals
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Titanium (IV) oxide (P25, TiO2, 99.5%), phosphotungstic acid hydrate (H3O40PW12·xH2O, Mw = 2880.05), zinc nitrate hexahydrate (Zn(NO3)2·6H2O, ≥99.0%), iron(III) nitrate nonahydrate (Fe(NO3)3·9H2O, ≥98%), ammonium metavanadate(V) (NH4VO3, 99%), cobalt(II) nitrate hexahydrate (Co(NO3)2·6H2O, 98%), cerium(III) nitrate hexahydrate (Ce(NO3)3·6H2O, 99%), gallium(III) nitrate hydrate (Ga(NO3)3·xH2O, 99.9%), copper(II) nitrate trihydrate (Cu(NO3)2·3H2O, 99–104%), silver nitrate (AgNO3, ≥99.0%), palladium(II) nitrate hydrate (Pd(NO3)2·xH2O, 99.9%) and dimethyl carbonate (DMC, ≥99.0%) were purchased from Sigma-Aldrich and used without further purification. 13C labeled carbon dioxide (13CO2, 99 atom% 13C - <3 atom% 18O) was purchased from Cortecnet.
8
Synthesis and Characterization of Novel Compounds
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Strontium nitrate (SrNO3), ammonium metavanadate (NH4VO3), caffeic acid (C9H8O4), glucose, galactose, fructose, sucrose, catechol, ferulic acid, gallic acid, uric acid, ascorbic acid and dopamine were received from Sigma-Aldrich and Alfa Aesar Companies. All other chemicals/reagents are analytical grade were purchased with maximum high purity and used without further purification. All required solution was prepared by using de-ionized (DI) water for the throughout the experiments.
9
Extractable Phosphorus Determination Protocol
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Determination of extractable phosphorus was modified from previous study [1 (link)]. Briefly, 5 g of each sample were mixed with 50 mL 0.2% pepsin solution, which was prepared with 0.2 g pepsin (Sigma, St. Louis, MO, USA) dissolved in 100 mL 0.1 M HCl solution. After 3 h of incubation at 37°C and 80 rpm, the mixtures were centrifuged at 3,000 rpm, followed by filtration through Advantec No.1 filter papers. The 0.3 mL extracts were added to 0.6 mL deionized water and 0.6 mL vanadium-ammonium molybdate solution, which was prepared with nitric acid, ammonium metavanadate (Sigma, USA) and ammonium molybdate tetrahydrate (Sigma, USA). Then, the mixtures were centrifuged again at 6,000 rpm for 10 min, and the absorbance of suspension was detected at 415 nm. Solutions of 0.3125 to 2.5 μmol/mL potassium dihydrogen phosphate were also detected to draw a standard curve. The 300 g WB treated with 750-unit Phy was also analyzed.
10
Graphene Oxide Composite Synthesis
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Ammonium metavanadate (NH4VO3, 99.0%), oxalic acid dihydrate (C2H2O4 × 2H2O, 97.0%), and methylene blue (MB > 98%) were obtained from Sigma‒Aldrich and used without further purification. Deionized water was used in all experiments (conductivity < 0,06 μS/cm). Graphene oxide (GO) employed in the composite synthesis was prepared using the modified Hummers method 69 (link). Potassium dichromate (K2Cr2O7, ≥ 99.0%) and ammonium oxalate (AO, ≥ 99%) were purchased from Merck. Benzoquinone (BQ, > 98%) and tert-butyl alcohol (TBA, > 99.5%) were received from CheMondis.
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