Adsorption of Cu(II) in aqueous solution using microwave-assisted titanate nanotubes
| Autor: | Hsin-Hung Ou, Chao-Wei Huang, Lin-Han Chiang Hsieh |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Materials Science (miscellaneous) Inorganic chemistry Nanochemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences symbols.namesake Adsorption X-ray photoelectron spectroscopy Electrical and Electronic Engineering Physical and Theoretical Chemistry Range (particle radiation) Aqueous solution Ion exchange Langmuir adsorption model Cell Biology 021001 nanoscience & nanotechnology Copper Atomic and Molecular Physics and Optics 0104 chemical sciences chemistry symbols 0210 nano-technology Biotechnology |
| Zdroj: | Applied Nanoscience. 9:505-514 |
| ISSN: | 2190-5517 2190-5509 |
| DOI: | 10.1007/s13204-018-0932-4 |
| Popis: | This study aims to investigate the adsorption behavior and mechanism of Cu(II) over microwave-assisted titanate nanotubes (MTNTs, NaxH2−xTi3O7). The effect of power level of microwave irradiation during MTNT synthesis on the adsorption mechanism is also examined. Regarding the adsorption potential of Cu(II) over MTNTs, more than 80% of Cu(II) is removed within the first minute, and the adsorption equilibrium is reached by half an hour. The adsorption capacities of MTNTs obtained from Langmuir model fall in the range of 1.86–2.46 mmol g−1. According to the characterizations including ICP–AES, XRD, FT–IR/DRIFT, XPS, and H2-TPR, the amount and binding intensity of intercalated Na+ within MTNTs, which are greatly dependent upon the power level of microwave irradiation during MTNT synthesis, dominate the adsorption kinetics, the adsorption capability, the adsorption stabilization, and the extent of copper complexation. An adsorption mechanism is also proposed such that ion exchange process and complexation reaction are both involved in the Cu(II) adsorption over MTNTs. |
| Databáze: | OpenAIRE |
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