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<p>In this study, which was carried out with priority given to the environment, CuNPs were tested as a phytocatalyst for dimethylamine-borane (Me<sub>2</sub>NHBH<sub>3</sub>) hydrolysis after being loaded in situ into three different OSS-replaced cements (CuNPs@OSS<sup>®</sup>CEM, OSS = Oil Seed Shells, hazelnut (HS), walnut (WS) and almond (AS) shells). These three catalysts with nearly monodisperse size were synthesized in situ through Me<sub>2</sub>NHBH<sub>3</sub> hydrolysis in water at 25.0 <i>±</i> 0.1&#xa0;°C and characterized by advanced analysis. From TEM images, black CuNPs@HS<sup>®</sup>CEM and CuNPs@AS<sup>®</sup>CEM were calculated to have a unique monodisperse distribution in hexane and have particle sizes of 29.41&#xa0;nm and 18.18&#xa0;nm, respectively. Also, from the TEM image of CuNPs@WS<sup>®</sup>CEM, these nanoparticles were measured to be close to monodispersity and the average particle size was 26.77 <i>±</i> 0.23&#xa0;nm. Detailed kinetic studies were carried out on Me<sub>2</sub>NHBH<sub>3</sub> hydrolysis using these three phytocatalysts and TON and TOF values of 24,896, 22,586 and 22,385 (for 50&#xa0;h) and 498, 452 and 448&#xa0;h<sup>− 1</sup> were obtained for CuNPs@HS<sup>®</sup>CEM, CuNPs@WS<sup>®</sup>CEM and CuNPs@AS<sup>®</sup>CEM, respectively. In summary, this study encourages the use of these three CuNPs@OSS<sup>®</sup>CEMs with high activity on hydrogen production as building materials in another study.</p>

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Oilseed Shells Replaced Cement-Based Copper Nanoparticles as Phytocatalyst for Hydrogen Release Reaction from Dimethylamine-Borane Hydrolysis

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Sibel Duman,
  • Fethi Issever,
  • Sadik Varolgunes

摘要

In this study, which was carried out with priority given to the environment, CuNPs were tested as a phytocatalyst for dimethylamine-borane (Me2NHBH3) hydrolysis after being loaded in situ into three different OSS-replaced cements (CuNPs@OSS®CEM, OSS = Oil Seed Shells, hazelnut (HS), walnut (WS) and almond (AS) shells). These three catalysts with nearly monodisperse size were synthesized in situ through Me2NHBH3 hydrolysis in water at 25.0 ± 0.1 °C and characterized by advanced analysis. From TEM images, black CuNPs@HS®CEM and CuNPs@AS®CEM were calculated to have a unique monodisperse distribution in hexane and have particle sizes of 29.41 nm and 18.18 nm, respectively. Also, from the TEM image of CuNPs@WS®CEM, these nanoparticles were measured to be close to monodispersity and the average particle size was 26.77 ± 0.23 nm. Detailed kinetic studies were carried out on Me2NHBH3 hydrolysis using these three phytocatalysts and TON and TOF values of 24,896, 22,586 and 22,385 (for 50 h) and 498, 452 and 448 h− 1 were obtained for CuNPs@HS®CEM, CuNPs@WS®CEM and CuNPs@AS®CEM, respectively. In summary, this study encourages the use of these three CuNPs@OSS®CEMs with high activity on hydrogen production as building materials in another study.