<p>In the present work, MoFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub> nanocomposite as a photocatalyst was developed hydrothermally and as-prepared catalyst was explored to obtain xanthenedione derivatives under optimized conditions. To comprehend MoFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub> photocatalytic characteristics, we conducted various tests, including FT-IR, XRD, SEM, BET, XPS, TGA, UV–Vis spectrophotometer with an integrating sphere attachment for diffuse reflectance measurements, NH<sub>3</sub>-TPD, and CO<sub>2</sub>-TPD for acidity/basicity profiling. Inclusion of MoFe<sub>2</sub>O<sub>4</sub> into TiO<sub>2</sub> enhanced its optical characteristics by narrowing the band gap and extending its photocatalytic activity into the visible region. XPS analysis reveals chemical bonding between MoFe<sub>2</sub>O<sub>4</sub> into TiO<sub>2</sub> and supporting the formation of a heterojunction structure. This synergistic interaction significantly improved the photocatalytic activity of the nanocomposite as compared to individual counterparts. As a photocatalyst, MoFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub> produced more yield in less time than pure TiO<sub>2</sub>. The model compound 3a was efficiently synthesized using MoFe<sub>2</sub>O4/TiO<sub>2</sub> as a dual photocatalyst and thermocatalyst under optimized conditions (10&#xa0;mol% catalyst loading, 40-min irradiation, and 100 mW/cm<sup>2</sup> visible-light intensity). Xanthedione derivatives yield significantly higher photocatalytic processes in a minimal reaction time as compared to pure TiO<sub>2</sub> and conventional thermal methods, demonstrating ~ 70% reduction in energy consumption. Recyclability studies on materials found MoFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub> to be stable as photocatalyst properties were consistent up to four runs. This study demonstrated the promising role of visible-light-mediated photocatalysis in bridging green and synthetic organic chemistry.</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

A visible-light-sensitive molybdenum ferrite oxide/titanium dioxide nanocomposite photocatalyst

  • Md. Afroz Bakht,
  • Abdulrahman I. Alharthi,
  • Mshari Alotaibi,
  • Md Imtiaz Ali

摘要

In the present work, MoFe2O4/TiO2 nanocomposite as a photocatalyst was developed hydrothermally and as-prepared catalyst was explored to obtain xanthenedione derivatives under optimized conditions. To comprehend MoFe2O4/TiO2 photocatalytic characteristics, we conducted various tests, including FT-IR, XRD, SEM, BET, XPS, TGA, UV–Vis spectrophotometer with an integrating sphere attachment for diffuse reflectance measurements, NH3-TPD, and CO2-TPD for acidity/basicity profiling. Inclusion of MoFe2O4 into TiO2 enhanced its optical characteristics by narrowing the band gap and extending its photocatalytic activity into the visible region. XPS analysis reveals chemical bonding between MoFe2O4 into TiO2 and supporting the formation of a heterojunction structure. This synergistic interaction significantly improved the photocatalytic activity of the nanocomposite as compared to individual counterparts. As a photocatalyst, MoFe2O4/TiO2 produced more yield in less time than pure TiO2. The model compound 3a was efficiently synthesized using MoFe2O4/TiO2 as a dual photocatalyst and thermocatalyst under optimized conditions (10 mol% catalyst loading, 40-min irradiation, and 100 mW/cm2 visible-light intensity). Xanthedione derivatives yield significantly higher photocatalytic processes in a minimal reaction time as compared to pure TiO2 and conventional thermal methods, demonstrating ~ 70% reduction in energy consumption. Recyclability studies on materials found MoFe2O4/TiO2 to be stable as photocatalyst properties were consistent up to four runs. This study demonstrated the promising role of visible-light-mediated photocatalysis in bridging green and synthetic organic chemistry.