Metal-organic frameworks as precursor for metal oxide nanostructures Part I: MOF-derived copper oxide embedded in carbon matrix
Journal Title: Advanced Journal of Chemistry-Section A (Theoretical, Engineering and Applied Chemistry) - Year 2019, Vol 2, Issue 3
Abstract
Three isostructural metal-organic framework materials (MOFs) formulated as M[(HBTC)(H2O)]ˑH2O(M = Cu for 1, Zn for 2 and Ca for 3) constructed with 1, 3, 5-benzenetricarboxylate (BTC) were synthesized under hydro/solvothermal conditions. The three compounds were characterized on the basis of infrared and UV-Vis spectroscopy and the structure of 3 elucidated with the help of single-crystal x-ray crystallography. The UV-Vis spectrum of 1 exhibited a unique band at 511 nm. In the region 520 – 534 nm, the band splits into two moderately intense peaks at 527 and 531 nm. These absorption peaks along with other bands at 629 and 638 nm were assigned to d-d transitions of the copper (II) ion with distorted square planar geometry. The infrared spectra of the three compounds revealed that the ligand, BTC anion coordinated in a chelating and / or bridging mode to the metal center. The presence of absorption bands at 1699 cm-1 in 1 and 2, (1681 cm-1 in 3) can be attributed to protonated HBTC for 1-3. Single-crystal X-ray crystallographic studies of compound 3 revealed well-ordered structure with BTC ligand linking the individual chains to form a network structure. On heating Cu(HBTC)(H2O)ˑH2O up to 400oC, a copper-oxide embedded in carbon matrix was obtained with uniform particles of 10 -100 nm size.
Authors and Affiliations
Chinyere A. Anyama, Providence B. Ashishie, Bassey E. Inah, Idongesit J. Mbonu, Ayi A. Ayi
Keywords
Related Articles
- EP ID EP479191
- DOI 10.29088/SAMI/AJCA.2019.2.234244
- Views 70
- Downloads 0
Phytochemical Analyses of Terminalia Schimperiana (combretaceae) Root Bark Extract to Isolate Stigmasterol
Phytochemical screening of Terminalia schimperiana (Combretaceae) Root Bark showed presence of flavonoids, tannins, steroid carbohydrates and terpenoides in n-hexane, ethylacetate and methanol as solvents of extraction....
Recovering Gas Flares from the 12th Gas Phase of the South Pars Gas Refinery
In this study, the economical value of flared gases in gas phase 12 gas refinery was investigated. The economy itself has been examined from two perspectives. The first view on the conversion of fired gases to electrical...
The Prediction of Adsorption Properties of a Solid Phase-Microextraction Fiber by Chemometrics methods
A new method for estimation of adsorption properties of a solid phase micro extraction fiber by artificial neural network (ANN) has been studied for the first time ever. An etched steel fiber which is simple prepared and...
Comparison of Elemental Contents of Some Edible Plant Leaves in Hong Local Government Area of Adamawa State, Nigeria
The elemental contents of Ficus sycomorus, Celtis interifolia, Balanites eagyptiaca, Vitex doniana and Haemtostaphis barteri leaves were investigated from Hong Local Government Area of Adamawa state. Atomic absorption sp...
Pesticide in Soil and Rice Crop from North of Iran: Concentration and Risk Assessment
Rice is a major diet and staple food in Iran. The most common organophosphorus pesticide used in rice paddies of this area is diazinon. The objective of this research is to determine the concentration of diazinon in soil...