Scholarlink

<p>In this study, CeO<sub>2</sub> powder is synthesized using a novel, simple, and low-cost solid-state reaction method. The catalytic performance of the prepared CeO<sub>2</sub> powder is investigated against Rhodamine B (RhB). It is observed that Oxygen vacancies in CeO<sub>2</sub> lead to the formation of superoxide radicals (<sup>•</sup>O<sub>2</sub>⁻), which effectively oxidize dye molecules. The structural analysis and formation of the cubic phase of CeO<sub>2</sub> powder are confirmed by XRD. Physicochemical properties of the CeO<sub>2</sub> catalyst were studied by optical (UV-DRS) and morphological (FE-SEM&#xa0;&amp; HR-TEM) studies. The synthesized sample contains Ce–O and O–H functional groups. FE-SEM micrographs reveal randomly shaped microstructures. The bandgap energy of CeO<sub>2</sub>, calculated using the Kubelka–Munk function, was found to be 3.2&#xa0;eV. The CeO<sub>2</sub> powder synthesized at optimized conditions exhibited a 94% degradation efficiency against RhB dye over 90&#xa0;min. These findings suggest that a non-stoichiometric CeO<sub>2</sub> catalyst holds promise as a large-scale solution 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

Investigating the role of oxygen vacancies in CeO2 powder for effective Rhodamine B degradation

  • 期刊论文

  • 发表日期：

    2025年7月18日

查看全文
  • Kunal B. Erande,
  • Santosh V. Mohite,
  • Uma V. Nerle,
  • Sonali R. Jadhav,
  • Rupesh S. Pedanekar,
  • Keshav Y. Rajpure

摘要

In this study, CeO2 powder is synthesized using a novel, simple, and low-cost solid-state reaction method. The catalytic performance of the prepared CeO2 powder is investigated against Rhodamine B (RhB). It is observed that Oxygen vacancies in CeO2 lead to the formation of superoxide radicals (•O2⁻), which effectively oxidize dye molecules. The structural analysis and formation of the cubic phase of CeO2 powder are confirmed by XRD. Physicochemical properties of the CeO2 catalyst were studied by optical (UV-DRS) and morphological (FE-SEM & HR-TEM) studies. The synthesized sample contains Ce–O and O–H functional groups. FE-SEM micrographs reveal randomly shaped microstructures. The bandgap energy of CeO2, calculated using the Kubelka–Munk function, was found to be 3.2 eV. The CeO2 powder synthesized at optimized conditions exhibited a 94% degradation efficiency against RhB dye over 90 min. These findings suggest that a non-stoichiometric CeO2 catalyst holds promise as a large-scale solution for environmental remediation.