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Hydrogel poly(2-acrylmido-2-methylpropanesulfonic acid-co-acrylic acid) supported copper nanoparticles and their use as catalyst for hydrogen production from hydrolysis of sodium borohydride |
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| รหัสดีโอไอ | |
| Creator | Sanoe Chairam |
| Title | Hydrogel poly(2-acrylmido-2-methylpropanesulfonic acid-co-acrylic acid) supported copper nanoparticles and their use as catalyst for hydrogen production from hydrolysis of sodium borohydride |
| Contributor | Phattaranan Thongtaow, Nuchanaporn Pijarn, Siriwat Radabutra |
| Publisher | Faculty of Science, Ubon Ratchathani University |
| Publication Year | 2567 |
| Journal Title | Journal of Science and Science Education |
| Journal Vol. | 7 |
| Journal No. | 1 |
| Page no. | 37-49 |
| Keyword | Hydrogen production, Hydrolysis, Copper nanoparticles, Hydrogel polymer, Sodium borohydride |
| URL Website | https://so04.tci-thaijo.org/index.php/JSSE |
| Website title | Journal of Science and Science Education |
| ISSN | ISSN 2697-410X |
| Abstract | In this work, the hydrogel copolymers from 2-acrylmido-2-methylpropanesulfonic acid (AMPS) and acrylic acid (AA) or Hp(AMPS-co-AA) at different ratios were successfully synthesized by the free radical polymerization for the use in the adsorption of Cu2+ ions through functional groups in the hydrogel network. The bond Cu2+ ions within the hydrogel structure were reduced to the copper nanoparticles (CuNPs) by the reduction reaction using sodium borohydride (NaBH4) as the reducing agent. The swelling of hydrogel was investigated, and Hp(AMPS-co-AA) supported CuNPs were characterized by Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA). After that, the catalytic activity of Hp(AMPS-co-AA) supported CuNPs was investigated in the hydrolysis of NaBH4 for the hydrogen production. The reaction parameters were calculated by Arrhenius and Eyring equations. It was found that the activation energy (Ea) was 18.20 kJ mol-1; whereas, the activation enthalpy (?H#) and activation entropy (?S#) was 20.84 kJ mol-1 and -197.54 kJ mol-1 K-1, respectively. Furthermore, Hp(AMPS-co-AA) supported CuNPs can be reused up to several times without a significant loss of the catalytic activity. This work indicated that Hp(AMPS-co-AA) supported CuNPs were very useful in hydrolysis of NaBH4 for hydrogen production and even in catalysis of other reactions of interest. |
