Scholarlink

<p>Efficient and stable semiconductor photocatalysts are crucial for environmental and energy applications but often suffer from limited visible light absorption and rapid charge recombination. In this study, Eu-doped ZnS and CdS nanoparticles were synthesized via a co-precipitation method followed by calcination at 300&#xa0;°C to enhance crystallinity. Europium was incorporated at 5&#xa0;mol% to investigate its effects on structural, optical, and photocatalytic properties. XRD and XPS analyses confirmed successful Eu incorporation, inducing lattice distortions and defect states. SEM revealed reduced particle size and increased agglomeration. Optical studies showed redshifted absorption edges and narrowed band gaps (ZnS: 3.10 → 2.95&#xa0;eV; CdS: 2.75 → 2.60&#xa0;eV), indicating improved visible-light absorption. PL measurements revealed Eu³⁺-related emissions and suppressed electron-hole recombination. Photocatalytic tests demonstrated enhanced Rhodamine B degradation under visible light, with Eu-doped CdS achieving 95% efficiency after five reuse cycles. Eu doping effectively tunes the optoelectronic properties of ZnS and CdS, enhancing their performance for photocatalysis, wastewater treatment, and light-emitting applications.</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

Europium incorporation in ZnS and cds: structural modifications, optical transitions, and photocatalytic efficiency

  • 期刊论文

  • 发表日期：

    2025年7月15日

查看全文
  • İpek Balnan,
  • Sabit Horoz,
  • Kübra Köşe Kaya,
  • Ceren Orak

摘要

Efficient and stable semiconductor photocatalysts are crucial for environmental and energy applications but often suffer from limited visible light absorption and rapid charge recombination. In this study, Eu-doped ZnS and CdS nanoparticles were synthesized via a co-precipitation method followed by calcination at 300 °C to enhance crystallinity. Europium was incorporated at 5 mol% to investigate its effects on structural, optical, and photocatalytic properties. XRD and XPS analyses confirmed successful Eu incorporation, inducing lattice distortions and defect states. SEM revealed reduced particle size and increased agglomeration. Optical studies showed redshifted absorption edges and narrowed band gaps (ZnS: 3.10 → 2.95 eV; CdS: 2.75 → 2.60 eV), indicating improved visible-light absorption. PL measurements revealed Eu³⁺-related emissions and suppressed electron-hole recombination. Photocatalytic tests demonstrated enhanced Rhodamine B degradation under visible light, with Eu-doped CdS achieving 95% efficiency after five reuse cycles. Eu doping effectively tunes the optoelectronic properties of ZnS and CdS, enhancing their performance for photocatalysis, wastewater treatment, and light-emitting applications.