Scholarlink

<p>In this study, a ternary Fg-C<sub>3</sub>N<sub>4</sub>/Ag<sub>3</sub>VO<sub>4</sub>/Fe<sub>2</sub>TiO<sub>5</sub> nanocomposite with dual heterojunctions was successfully synthesized via a facile chemical precipitation method and evaluated for its effectiveness in photocatalytic CO<sub>2</sub> conversion. Extensive characterization techniques, including XRD, SEM, EDS mapping, TEM, XPS, UV–Vis DRS, were applied to explore the nanocomposite’s physicochemical properties and to elucidate the reaction mechanisms. The Fg-C<sub>3</sub>N<sub>4</sub>/Ag<sub>3</sub>VO<sub>4</sub>/Fe<sub>2</sub>TiO<sub>5</sub> nanocomposite exhibited a significant enhancement in CO<sub>2</sub> conversion performance, particularly for CH<sub>4</sub> production. The optimized CH<sub>4</sub> yield reached 528.4 μmol/g-cat, representing a 4.3-fold and 2.4-fold increase compared to pristine Fg-C<sub>3</sub>N<sub>4</sub> and Ag<sub>3</sub>VO<sub>45</sub>, respectively. Moreover, the composite photocatalyst demonstrated excellent stability and recyclability, retaining its efficiency over four successive cycles. The dual heterojunctions played a crucial role in enhancing the separation of photogenerated electron–hole pairs while minimizing recombination. This work offers valuable insights into the development of advanced photocatalysts with dual heterojunctions, presenting a promising approach for the efficient production of high-value products such as CH<sub>4</sub>.</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

Well-structured 2D Fe2TiO5 coupled Fg-C3N4/Ag3VO4 dual heterojunction for highly efficient and stable photocatalytic CO2 conversion to methane

  • 期刊论文

  • 发表日期：

    2025年4月4日

查看全文
  • Abdullah Bafaqeer,
  • Aniz Chennampilly Ummer,
  • Hammam Abdurabu Thabit

摘要

In this study, a ternary Fg-C3N4/Ag3VO4/Fe2TiO5 nanocomposite with dual heterojunctions was successfully synthesized via a facile chemical precipitation method and evaluated for its effectiveness in photocatalytic CO2 conversion. Extensive characterization techniques, including XRD, SEM, EDS mapping, TEM, XPS, UV–Vis DRS, were applied to explore the nanocomposite’s physicochemical properties and to elucidate the reaction mechanisms. The Fg-C3N4/Ag3VO4/Fe2TiO5 nanocomposite exhibited a significant enhancement in CO2 conversion performance, particularly for CH4 production. The optimized CH4 yield reached 528.4 μmol/g-cat, representing a 4.3-fold and 2.4-fold increase compared to pristine Fg-C3N4 and Ag3VO45, respectively. Moreover, the composite photocatalyst demonstrated excellent stability and recyclability, retaining its efficiency over four successive cycles. The dual heterojunctions played a crucial role in enhancing the separation of photogenerated electron–hole pairs while minimizing recombination. This work offers valuable insights into the development of advanced photocatalysts with dual heterojunctions, presenting a promising approach for the efficient production of high-value products such as CH4.