Scholarlink

<p>Mesoporous SBA-15 silica was synthesized and functionalized with amine groups to enhance the adsorption of U(VI) from aqueous solutions. We utilized three silane agents, APTES, 3-(2-Aminoethylamino) propyl trimethoxysilane, and N1-(3-Trimethoxysilylpropyl) diethylenetriamine, providing one, two, and three amine branches, respectively. Batch adsorption experiments conducted under varying pH, contact time, initial U(VI) concentration, and temperature revealed a maximum adsorption capacity of 1151.67&#xa0;mg/g with triamine-functionalized SBA-15. Structural analyses, including FT-IR, XRD, SEM, and BET, confirmed the successful modifications. Additionally, optimization through response surface methodology identified optimal conditions of <i>pH</i> 7.91, 38.87&#xa0;°C, and 100&#xa0;mg/l uranium, resulting in an uptake of 1120.59&#xa0;mg/g.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Functionalized mesoporous silica with diverse silane groups for enhanced uranium adsorption selectivity: leveraging response surface methodology for experiment design and outcome prediction

  • 期刊论文

  • 发表日期：

    2025年7月7日

查看全文
  • H. Sarafraz,
  • Gh. Alahyarizadeh,
  • N. Darvishi,
  • A. Minuchehr

摘要

Mesoporous SBA-15 silica was synthesized and functionalized with amine groups to enhance the adsorption of U(VI) from aqueous solutions. We utilized three silane agents, APTES, 3-(2-Aminoethylamino) propyl trimethoxysilane, and N1-(3-Trimethoxysilylpropyl) diethylenetriamine, providing one, two, and three amine branches, respectively. Batch adsorption experiments conducted under varying pH, contact time, initial U(VI) concentration, and temperature revealed a maximum adsorption capacity of 1151.67 mg/g with triamine-functionalized SBA-15. Structural analyses, including FT-IR, XRD, SEM, and BET, confirmed the successful modifications. Additionally, optimization through response surface methodology identified optimal conditions of pH 7.91, 38.87 °C, and 100 mg/l uranium, resulting in an uptake of 1120.59 mg/g.