Scholarlink

<p>In the present study, novel cerium tungstate (Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub>) nanocatalysts were synthesized using three distinct synthesis approaches: co-precipitation (CP), sol–gel auto-combustion (SG), and microwave-assisted combustion (MW). Effective treatment of dye-contaminated wastewater is essential for sustainable water management, water ecosystem management, and water resource management, as persistent organic pollutants contribute significantly to water contamination and prevention challenges in aquatic environments.&#xa0;Structural and optical analyses were performed by powder X-ray diffraction (PXRD), Fourier transform infrared (FT-IR) spectroscopy, Dynamic light scattering (DLS), and ultraviolet–visible (UV–Vis) absorption spectroscopy. Structural insight reveals that the MW-Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub> nanocatalyst possesses comparatively low crystallite size (30&#xa0;nm) and low density (6.679&#xa0;g/cm<sup>3</sup>). The bandgap energies for CP-Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub>, SG-Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub>, and MW-Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub> were estimated as 2.86, 2.70, and 2.77&#xa0;eV, respectively. Among others, the MW-assisted synthesis method was identified as a simple and efficient strategy for tailoring the physicochemical properties of Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub> nanostructures to enhance their photocatalytic performance. Field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray spectroscopy (EDX) and photoluminescence (PL) spectroscopic studies were carried out for MW-Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub>. Furthermore, the photocatalytic activity of MW-Ce<sub>2</sub>(WO<sub>4</sub>)3 nanocatalysts was assessed by monitoring the degradation of methylene blue (MB) dye under UV irradiation (365&#xa0;nm) and visible light (160 W tungsten halogen lamp). Additionally, a Photo-Fenton process using Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub> in the presence of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) was studied to enhance degradation efficiency. The results demonstrated nearly complete degradation (99%) of MB dye within 40&#xa0;min under UV light, whereas 96% efficiency was obtained at 80&#xa0;min over visible light, confirming the dual-light-driven photocatalytic potential of MW-Ce<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub> nanocatalyst. These finding demonstrate&#xa0;the effectiveness of MW-assisted synthesis in producing high-performance photocatalysts for wastewater remediation, water ecosystem and protection, mitigation of dye-induced pollution, and advanced photocatalytic treatment strategies supporting water sustainability management in contaminated aquatic systems.</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

Facile microwave preparation of Ce2(WO4)3 nanocatalyst for dual-light-driven photocatalytic degradation of methylene blue

  • 期刊论文

  • 发表日期：

    2026年6月17日

查看全文
  • M. Pannerselvam,
  • S. Zameer Basha,
  • A. Shameem,
  • R. Suresh,
  • V. Siva,
  • A. Murugan

摘要

In the present study, novel cerium tungstate (Ce2(WO4)3) nanocatalysts were synthesized using three distinct synthesis approaches: co-precipitation (CP), sol–gel auto-combustion (SG), and microwave-assisted combustion (MW). Effective treatment of dye-contaminated wastewater is essential for sustainable water management, water ecosystem management, and water resource management, as persistent organic pollutants contribute significantly to water contamination and prevention challenges in aquatic environments. Structural and optical analyses were performed by powder X-ray diffraction (PXRD), Fourier transform infrared (FT-IR) spectroscopy, Dynamic light scattering (DLS), and ultraviolet–visible (UV–Vis) absorption spectroscopy. Structural insight reveals that the MW-Ce2(WO4)3 nanocatalyst possesses comparatively low crystallite size (30 nm) and low density (6.679 g/cm3). The bandgap energies for CP-Ce2(WO4)3, SG-Ce2(WO4)3, and MW-Ce2(WO4)3 were estimated as 2.86, 2.70, and 2.77 eV, respectively. Among others, the MW-assisted synthesis method was identified as a simple and efficient strategy for tailoring the physicochemical properties of Ce2(WO4)3 nanostructures to enhance their photocatalytic performance. Field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray spectroscopy (EDX) and photoluminescence (PL) spectroscopic studies were carried out for MW-Ce2(WO4)3. Furthermore, the photocatalytic activity of MW-Ce2(WO4)3 nanocatalysts was assessed by monitoring the degradation of methylene blue (MB) dye under UV irradiation (365 nm) and visible light (160 W tungsten halogen lamp). Additionally, a Photo-Fenton process using Ce2(WO4)3 in the presence of hydrogen peroxide (H2O2) was studied to enhance degradation efficiency. The results demonstrated nearly complete degradation (99%) of MB dye within 40 min under UV light, whereas 96% efficiency was obtained at 80 min over visible light, confirming the dual-light-driven photocatalytic potential of MW-Ce2(WO4)3 nanocatalyst. These finding demonstrate the effectiveness of MW-assisted synthesis in producing high-performance photocatalysts for wastewater remediation, water ecosystem and protection, mitigation of dye-induced pollution, and advanced photocatalytic treatment strategies supporting water sustainability management in contaminated aquatic systems.