Scholarlink

<p>We systematically synthesized bismuth tungstate (Bi<sub>2</sub>WO<sub>6</sub>) nanoparticles via a hydrothermal method, varying reaction time to study their structural, optical and photocatalytic properties. Characterization via X-ray diffraction, Raman and FTIR confirmed the formation of the orthorhombic Bi<sub>2</sub>WO<sub>6</sub> phase, showing improved crystallinity and increased crystallite size (21–40&#xa0;nm) with longer reaction times. FE-SEM analysis revealed a morphological evolution from irregular aggregates to distinct flower-like nanostructures as the reaction time increased. Optical studies showed a reduction in the band gap from 2.94 to 2.72&#xa0;eV, thereby enhancing visible-light absorption. Photoluminescence (PL) studies showed reduced emission intensity in the BWO-20 sample, indicating reduced electron–hole recombination and improved charge-separation efficiency. BET analysis demonstrated mesoporous characteristics, with enhanced specific surface area and pore volume, for the Bi<sub>2</sub>WO<sub>6</sub> nanoparticles synthesized at a 20&#xa0;h hydrothermal reaction time. The sample exhibited optimal photocatalytic efficiency, degrading 73.2% of crystal violet (CV) and 85.6% of malachite green (MG) within 60&#xa0;min under visible light. These results highlight the potential of hydrothermally synthesized Bi<sub>2</sub>WO<sub>6</sub> nanoparticles as effective visible-light-driven photocatalysts for environmental remediation.</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

Structural, optical and photocatalytic properties of hydrothermally synthesized bismuth tungstate nanoparticles

  • 期刊论文

  • 发表日期：

    2026年4月17日

查看全文
  • Abhijit Landge,
  • Manish Pant,
  • Sandeep Arote,
  • Yogesh Hase,
  • Abbas Pathan,
  • Swati Rahane,
  • Akash Bhoir,
  • Minal Chopade,
  • Minal Kurane,
  • Ajinkya Kakade,
  • Shivaji Bhosale,
  • Priti Vairale,
  • Shashikant P. Patole,
  • Sandesh Jadkar

摘要

We systematically synthesized bismuth tungstate (Bi2WO6) nanoparticles via a hydrothermal method, varying reaction time to study their structural, optical and photocatalytic properties. Characterization via X-ray diffraction, Raman and FTIR confirmed the formation of the orthorhombic Bi2WO6 phase, showing improved crystallinity and increased crystallite size (21–40 nm) with longer reaction times. FE-SEM analysis revealed a morphological evolution from irregular aggregates to distinct flower-like nanostructures as the reaction time increased. Optical studies showed a reduction in the band gap from 2.94 to 2.72 eV, thereby enhancing visible-light absorption. Photoluminescence (PL) studies showed reduced emission intensity in the BWO-20 sample, indicating reduced electron–hole recombination and improved charge-separation efficiency. BET analysis demonstrated mesoporous characteristics, with enhanced specific surface area and pore volume, for the Bi2WO6 nanoparticles synthesized at a 20 h hydrothermal reaction time. The sample exhibited optimal photocatalytic efficiency, degrading 73.2% of crystal violet (CV) and 85.6% of malachite green (MG) within 60 min under visible light. These results highlight the potential of hydrothermally synthesized Bi2WO6 nanoparticles as effective visible-light-driven photocatalysts for environmental remediation.