Scholarlink

<p>The development of novel photocatalytic materials for wastewater treatment through water-splitting mechanisms has garnered significant attention for environmental purification. In this study, we successfully designed and synthesized quantum dots of CdS, Cd₀.₄₉Cr₀.₀₁S, Cd₀.₄₈Cr₀.₀₁Gd₀.₀₁S, Cd₀.₄<sub>7</sub>Cr₀.₀₁Gd₀.₀₂S, Cd₀.₄₈Cr₀.₀₁V₀.₀₁S, and Cd₀.₄<sub>7</sub>Cr₀.₀₁V₀.₀₂S using a wet chemical method. Structural analysis confirmed that these synthesized quantum dots maintained a cubic zinc-blende crystal structure, like that of pristine CdS. Moreover, optical investigations indicated that all the synthesized samples displayed strong absorption properties in the visible region of the electromagnetic spectrum, making them well suited for photocatalytic uses. Photocatalytic activity tests indicated that Cd₀.₄<sub>7</sub>Cr₀.₀₁Gd₀.₀₂S quantum dots demonstrated an impressive degradation efficiency of 92% against methylene blue (MB) organic pollutant in water, outperforming all other synthesized samples. The rate constant for Cd₀.₄<sub>7</sub>Cr₀.₀₁Gd₀.₀₂S quantum dots was determined to be 0.0153, which is nearly four times higher than that of pure CdS quantum dots and 1.77 times greater than Cd₀.₄<sub>7</sub>Cr₀.₀₁V₀.₀₂S quantum dots. These thorough analyses strongly suggest that Cd₀.₄<sub>7</sub>Cr₀.₀₁Gd₀.₀₂S quantum dots are highly promising candidates for the degradation of organic pollutants in water bodies under simulated sunlight exposure.</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

Impact of Cr/Gd and Cr/V co-doping on the physicochemical and photocatalytic behavior of CdS quantum dots

  • 期刊论文

  • 发表日期：

    2026年1月6日

查看全文
  • Pedda Thimmula Poojitha,
  • Young Lae Kim

摘要

The development of novel photocatalytic materials for wastewater treatment through water-splitting mechanisms has garnered significant attention for environmental purification. In this study, we successfully designed and synthesized quantum dots of CdS, Cd₀.₄₉Cr₀.₀₁S, Cd₀.₄₈Cr₀.₀₁Gd₀.₀₁S, Cd₀.₄7Cr₀.₀₁Gd₀.₀₂S, Cd₀.₄₈Cr₀.₀₁V₀.₀₁S, and Cd₀.₄7Cr₀.₀₁V₀.₀₂S using a wet chemical method. Structural analysis confirmed that these synthesized quantum dots maintained a cubic zinc-blende crystal structure, like that of pristine CdS. Moreover, optical investigations indicated that all the synthesized samples displayed strong absorption properties in the visible region of the electromagnetic spectrum, making them well suited for photocatalytic uses. Photocatalytic activity tests indicated that Cd₀.₄7Cr₀.₀₁Gd₀.₀₂S quantum dots demonstrated an impressive degradation efficiency of 92% against methylene blue (MB) organic pollutant in water, outperforming all other synthesized samples. The rate constant for Cd₀.₄7Cr₀.₀₁Gd₀.₀₂S quantum dots was determined to be 0.0153, which is nearly four times higher than that of pure CdS quantum dots and 1.77 times greater than Cd₀.₄7Cr₀.₀₁V₀.₀₂S quantum dots. These thorough analyses strongly suggest that Cd₀.₄7Cr₀.₀₁Gd₀.₀₂S quantum dots are highly promising candidates for the degradation of organic pollutants in water bodies under simulated sunlight exposure.