Vanadyl acetylacetonate

Manufactured by Merck Group

Sourced in United States

Vanadyl acetylacetonate is a coordination complex compound that contains a vanadium(IV) metal center coordinated to two acetylacetonate ligands. It is a crystalline solid that is soluble in organic solvents. The core function of vanadyl acetylacetonate is as a precursor for the deposition of vanadium-containing thin films and coatings.

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7 protocols using vanadyl acetylacetonate

Electrochemical Synthesis of Metal Oxide Catalysts

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Chemicals
bismuth(III) nitrate (Bi(NO₃)₃·5H₂O ≥ 98.0%), vanadyl acetylacetonate (VO(acac)₂ ≥
97.0%), potassium ferri(III)cyanide (K₃[Fe(CN)₆] ≥ 99.0%), and potassium hydroxide (KOH flakes ≥ 90%)
were purchased from Sigma-Aldrich and cobalt chloride hexahydrate
(CoCl₂·6H₂O ≥ 98.0%) from Fluka
Analytical. Solvents dimethylsulfoxide (DMSO ≥ 99.9%) and ethylene
glycol (ethane-1,2-diol ≥ 99%) were obtained from Sigma-Aldrich.
The buffer solution was prepared from potassium phosphate monobasic
and dibasic (KH₂PO₄ ≥ 99.0% and K₂HPO₄ ≥ 98.0%, Sigma-Aldrich). As a hole
scavenger, Na₂SO₃ from J.T. Baker was used.
High-purity (milliQ) water was obtained with a millipore purification
system (Synergy) and used for all solutions. Fluorine-doped tin oxide
(FTO)-coated glass slides were purchased from Hartford glass (15 Ω/cm²).

Hegner F.S., Herraiz-Cardona I., Cardenas-Morcoso D., López N., Galán-Mascarós J.R, & Gimenez S. (2017). Cobalt Hexacyanoferrate on BiVO4 Photoanodes for Robust Water Splitting. ACS Applied Materials & Interfaces, 9(43), 37671-37681.

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Synthesis of Metal Complexes

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All chemical compounds (vanadyl acetylacetonate, dipicolinic acid, modified methylaluminoxane (7% aluminum in toluene), 2-propen-1-ol) used in this work were purchased from Sigma-Aldrich (Darmstad, Germany). Their purity was between 98% and 100%.

Pobłocki K., Jacewicz D., Walczak J., Gawdzik B., Kramkowski K., Drzeżdżon J, & Kowalczyk P. (2022). Preparation of Allyl Alcohol Oligomers Using Dipicolinate Oxovanadium(IV) Coordination Compound. Materials, 15(3), 695.

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Synthesis of Polycrystalline VO2 on Graphene

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Polycrystalline VO₂ films were prepared on graphene substrates via the sol-gel method (60 (link), 61 (link)), which consists of spin-coating and a subsequent annealing process under an Ar atmosphere. The coating solution was prepared by dissolving the precursor vanadyl acetylacetonate (99.99% purity; Sigma-Aldrich, St. Louis, MO, USA) in methanol and then spin-coated onto graphene substrates covering Cu TEM grids (two to six layers, Graphene Supermarket, Ronkonkoma, NY, USA) using a spin rate of 3000 rpm for 10 s. The coated film was subsequently heated to 80°C in an oven for 20 min to remove the excess solvent. During the procedure, the alkoxide film was partially hydrolyzed by ambient moisture to form amorphous vanadium oxides. Polycrystalline VO₂ films were formed upon heating at 550°C for 30 min in a furnace under an Ar atmosphere via chemical vapor deposition. Subsequently, the VO₂ film was slowly cooled to 23°C for use.

Kim Y.J., Nho H.W., Ji S., Lee H., Ko H., Weissenrieder J, & Kwon O.H. (2023). Femtosecond-resolved imaging of a single-particle phase transition in energy-filtered ultrafast electron microscopy. Science Advances, 9(4), eadd5375.

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Synthesis of Functionalized Alcohols

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All starting materials were used without further purification. Pluronic F-127, vanadyl acetylacetonate (98%, VO(acac) 2 ), and ethanol ( p.a.), were purchased from Sigma Aldrich. Benzyl alcohol (BzOH, 99%), furfuryl alcohol (99%), 1-dodecanol (98%) and triethylamine were obtained from Acros Organics.

Gömpel D., Tahir M.N., Khan M., Adil S.F., Shaik M.R., Kuniyil M., Al-Warthan A, & Tremel W. (2024). Solvothermal synthesis of VO₂ nanoparticles with locally patched V₂O₅ surface layer and their morphology-dependent catalytic properties for the oxidation of alcohols. Dalton transactions (Cambridge, England : 2003), 53(7).

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Synthesis of Photoactive Materials

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Bismuth(III)
nitrate pentahydrate (Bi(NiO₃)₃·5H₂O, 99.99%), vanadyl acetylacetonate
(C₁₀H₁₄O₅V, 97%), acetylacetone (C₅H₈O₂, 99%), tin(II) chloride dihydrate
(SnCl₂·2H₂O), iron(II) sulfate heptahydrate
(FeSO₄·7H₂O, 99%), nickel(II) sulfate hexahydrate
(NiSO₄·6H₂O, 98%), boric acid (H₃BO₃, 99.5%), potassium hydroxide (KOH, flakes, 90%), sodium
sulfite (Na₂SO₃, 98%), zinc acetate dihydrate
(Zn(CH₃COO)₂·2H₂O), ethanolamine
(NH₂(CH₂)₂OH), 2-methoxyethanol (CH₃O(CH₂)₂OH), and 1-chloronaphthalene
(C₁₀H₇Cl) were all purchased from Sigma-Aldrich.
Fluorine-doped tin oxide substrates (FTO glasses, 5 cm × 5 cm),
with a sheet resistance of 15 Ω·cm^–2,
were obtained from Sigma-Aldrich.

Geronimo L., Ferreira C.G., Gacha V., Raptis D., Martorell J, & Ros C. (2024). Understanding the Internal Conversion Efficiency of BiVO4/SnO2 Photoanodes for Solar Water Splitting: An Experimental and Computational Analysis. ACS Applied Energy Materials, 7(5), 1792-1801.

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Photocatalytic Bismuth Nitrate Synthesis

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Bismuth(iii) nitrate pentahydrate (Bi(NO₃)₃·5H₂O, purity ≥ 98%), vanadyl acetylacetonate (VO(acac)₂, purity ≥ 98%), acetylacetone (purity ≥ 99%), and methylene blue were procured from Sigma Aldrich (St. Louis, MO, USA). The conductive fluorine-doped tin oxide (FTO) coated glass with a sheet resistance of 7 Ω sq⁻¹ was purchased from Xinyan (Xinyan Technology Co., China). All aqueous solutions were prepared with Millipore deionized (DI) water with a resistivity of 18.2 MΩ cm.

Shi L., Zhuo S., Abulikemu M., Mettela G., Palaniselvam T., Rasul S., Tang B., Yan B., Saleh N.B, & Wang P. (2018). Annealing temperature effects on photoelectrochemical performance of bismuth vanadate thin film photoelectrodes. RSC Advances, 8(51), 29179-29188.

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Synthesis and Catalytic Application of Mg-Al-V-Mo Catalyst

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The Mg-Al catalyst was synthesized from aluminium nitrate nonahydrate, magnesium nitrate hexahydrate, sodium hydroxide and sodium carbonate (purchased from Sigma-Aldrich) . The metal precursors of vanadium and molybdenum were vanadyl acetylacetonate (Sigma-Aldrich) and ammonium molybdate (Ajax Finechem Pty Ltd) . In the catalytic reaction study, absolute ethanol was purchased from Merck.

Pinthong P., Praserthdam P, & Jongsomjit B. (2019). Oxidative Dehydrogenation of Ethanol over Vanadium- and Molybdenum-modified Mg-Al Mixed Oxide Derived from Hydrotalcite. Journal of oleo science, 68(7).

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