Scholarlink

<p>In the present work, a quaterpolymeric microgel-based monometallic CuO nanocomposite (M@CuO) has been synthesized and evaluated as an efficient catalyst for the NaBH₄-assisted reduction of methylene blue and para-nitrophenol. The microgel network has been constructed via free-radical emulsion polymerization of styrene, N, N-dimethylacrylamide, methacrylic acid, and N-(hydroxymethyl)acrylamide (crosslinker), followed by hydrothermal incorporation of CuO nanoparticles. Comprehensive characterization using FT-IR, TGA, DLS, XRD, EDX, SEM, TEM, and UV–vis spectroscopy has confirmed successful microgel formation, thermal stability up to ~ 340&#xa0;°C, reduced hydrodynamic size after CuO loading, and uniform nanoparticle distribution within the microgel matrix. The embedded CuO nanoparticles have exhibited a crystalline size of 4.34&#xa0;nm. Catalytic studies have demonstrated that M@CuO effectively reduced both methylene blue (MB) and para-nitro phenol (PNP), with performance dependent on catalyst and NaBH₄ concentrations. Further, the catalytic performance of M@CuO is proportional to the presence of a relatively larger amount of CuO NPs within the microgel. Further, the kinetics of the reduction reactions have been studied using ultraviolet–visible spectroscopy. M@CuO nanocomposite with NaBH₄ has showed the best catalytic efficiency, reaching 96.29% reduction of MB and 97.57% of PNP, with respective rate constants of 17.87 × 10⁻² and 17.24 × 10⁻² min⁻¹.</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

Fabrication and catalytic application of microgel-based copper oxide nanocomposite

  • 期刊论文

  • 发表日期：

    2026年2月19日

查看全文
  • Anmol Kumar,
  • Shubhangi Pandey,
  • Aradhana Chaudhary,
  • Vinai Kumar Singh,
  • Krishna Kumar,
  • S. Krishnamoorthi,
  • Kranthikumar Tungala

摘要

In the present work, a quaterpolymeric microgel-based monometallic CuO nanocomposite (M@CuO) has been synthesized and evaluated as an efficient catalyst for the NaBH₄-assisted reduction of methylene blue and para-nitrophenol. The microgel network has been constructed via free-radical emulsion polymerization of styrene, N, N-dimethylacrylamide, methacrylic acid, and N-(hydroxymethyl)acrylamide (crosslinker), followed by hydrothermal incorporation of CuO nanoparticles. Comprehensive characterization using FT-IR, TGA, DLS, XRD, EDX, SEM, TEM, and UV–vis spectroscopy has confirmed successful microgel formation, thermal stability up to ~ 340 °C, reduced hydrodynamic size after CuO loading, and uniform nanoparticle distribution within the microgel matrix. The embedded CuO nanoparticles have exhibited a crystalline size of 4.34 nm. Catalytic studies have demonstrated that M@CuO effectively reduced both methylene blue (MB) and para-nitro phenol (PNP), with performance dependent on catalyst and NaBH₄ concentrations. Further, the catalytic performance of M@CuO is proportional to the presence of a relatively larger amount of CuO NPs within the microgel. Further, the kinetics of the reduction reactions have been studied using ultraviolet–visible spectroscopy. M@CuO nanocomposite with NaBH₄ has showed the best catalytic efficiency, reaching 96.29% reduction of MB and 97.57% of PNP, with respective rate constants of 17.87 × 10⁻² and 17.24 × 10⁻² min⁻¹.