Aqueous Boron Removal by Using Electrospun Poly(vinyl alcohol) (PVA) Mats: A Combined Study of IR/Raman Spectroscopy and Computational Chemistry
Autor: | Hyunwook Ryu, Yong Sun Won, Dong-Kyu Lee, Jun-Heok Lim, Ki Heon Eom, Suhan Kim, Kwan Sik Lee |
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Rok vydání: | 2017 |
Předmět: |
Vinyl alcohol
Aqueous solution Sorbent chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Electrospinning chemistry.chemical_compound symbols.namesake Adsorption 020401 chemical engineering chemistry Computational chemistry symbols Methanol 0204 chemical engineering Physical and Theoretical Chemistry 0210 nano-technology Raman spectroscopy Boron |
Zdroj: | The Journal of Physical Chemistry A. 121:2253-2258 |
ISSN: | 1520-5215 1089-5639 |
DOI: | 10.1021/acs.jpca.6b12578 |
Popis: | We report the use of a novel and efficient method to remove aqueous boron by using electrospun, water-resistant poly(vinyl alcohol) (PVA) mats stabilized in methanol. The removal of the primary aqueous boron species as (B(OH)3), was accomplished by chemical adsorption in reactions with −OH (hydroxyl) groups on the PVA mat surface. The chemical adsorption of B(OH)3 was qualitatively confirmed by the analysis of IR and Raman spectra. The bands, corresponding to the molecular vibration modes of chemically bonded boron in PVA, were identified by using the frequency calculation from the computational chemistry for the first time. The adsorption capacities of PVA mats for aqueous boron were then quantitated at a low boron concentration (range: 0.0010 to 0.0025 g of aqueous boron per g of PVA mats) by the Carmine method. The PVA mats were prepared by a well-established electrospinning technique, which make these substrates promising potential candidates for use as boron-selective sorbent media in applications su... |
Databáze: | OpenAIRE |
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