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<p>In this paper, WP<sub>2</sub> nanosheets were firstly prepared by in situ solid-phase synthesis and then which was combined with g-C<sub>3</sub>N<sub>4</sub> to obtain WP<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> composites materials through hydrothermal method. Characterization of morphology and structure proved that the WP<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> complexes had been successfully synthesized. The photocatalytic water splitting by WP<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> complexes was investigated by hydrogen evolution test under sunlight irradiation. Fifteen percent WP<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> exhibits the fastest hydrogen generation rate of 182.84&#xa0;μmol/g/h, which was 11 times higher than that of the pure g-C<sub>3</sub>N<sub>4</sub>, and the optimum total amount of hydrogen evolution within 5&#xa0;h, which indicated that the modification of WP<sub>2</sub> could significantly improve the photocatalytic hydrogen evolution performance of g-C<sub>3</sub>N<sub>4</sub>. In addition, WP<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> composites also displays superior photocatalytic degradation efficiency for organic pollutants. It is revealed that the WP<sub>2</sub> loading promotes the photogenerated electron–hole separation and effectively prevents carrier complexation, which enhanced the photocatalytic activity of WP<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> composites. In this study, a novel and efficient WP<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> photocatalyst was obtained and provided an important reference for the application of metal phosphides in photocatalysis field.</p>

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Preparation of WP2/g-C3N4 composite photocatalysts and their enhanced photocatalytic performance

  • 期刊论文

  • 发表日期：

    2025年3月25日

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  • Xinxin Shao,
  • Xianfeng Zhao,
  • Kangpeng Li,
  • Minghong Sun,
  • Xinpeng Ji,
  • Huidan Lu,
  • Yongping Liu

摘要

In this paper, WP2 nanosheets were firstly prepared by in situ solid-phase synthesis and then which was combined with g-C3N4 to obtain WP2/g-C3N4 composites materials through hydrothermal method. Characterization of morphology and structure proved that the WP2/g-C3N4 complexes had been successfully synthesized. The photocatalytic water splitting by WP2/g-C3N4 complexes was investigated by hydrogen evolution test under sunlight irradiation. Fifteen percent WP2/g-C3N4 exhibits the fastest hydrogen generation rate of 182.84 μmol/g/h, which was 11 times higher than that of the pure g-C3N4, and the optimum total amount of hydrogen evolution within 5 h, which indicated that the modification of WP2 could significantly improve the photocatalytic hydrogen evolution performance of g-C3N4. In addition, WP2/g-C3N4 composites also displays superior photocatalytic degradation efficiency for organic pollutants. It is revealed that the WP2 loading promotes the photogenerated electron–hole separation and effectively prevents carrier complexation, which enhanced the photocatalytic activity of WP2/g-C3N4 composites. In this study, a novel and efficient WP2/g-C3N4 photocatalyst was obtained and provided an important reference for the application of metal phosphides in photocatalysis field.