{"title":"Effect of Fe2O3 on CeO2 films in the photocatalytic evaluation towards the degradation of brilliant green and oxytetracycline","authors":"","doi":"10.1016/j.materresbull.2024.113058","DOIUrl":null,"url":null,"abstract":"<div><p>This paper presents a photochemical synthesis method for producing pure CeO<sub>2</sub> deposits and CeO<sub>2</sub> deposits loaded with varying proportions of Fe<sub>2</sub>O<sub>3</sub>. The deposits were calcined at 950 °C and characterized structurally, compositionally, and morphologically using XRD, XPS, SEM, FT-IR, and Raman spectroscopy techniques. Cerianite and hematite phases were identified in CeO<sub>2</sub>/Fe<sub>2</sub>O<sub>3</sub> samples, indicating heterogeneous surface deposits. Photocatalytic testing under UV–Vis illumination for 5 h demonstrated promising results. For the degradation of bright green dye, efficiencies of 78.9 % and 90.1 % were achieved for pure CeO<sub>2</sub> and CeO<sub>2</sub> samples loaded with 1.0 mol% Fe<sub>2</sub>O<sub>3</sub>, respectively. Similarly, for oxytetracycline drug degradation, performance rates of 35.3 % and 67.0 % were observed for CeO<sub>2</sub> and CeO<sub>2</sub> samples loaded with 1.0 mol% Fe<sub>2</sub>O<sub>3</sub>, respectively. Recyclability tests showed a gradual decline in photocatalytic performance over successive cycles due to by-product accumulation contaminating the catalyst.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research Bulletin","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0025540824003891","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a photochemical synthesis method for producing pure CeO2 deposits and CeO2 deposits loaded with varying proportions of Fe2O3. The deposits were calcined at 950 °C and characterized structurally, compositionally, and morphologically using XRD, XPS, SEM, FT-IR, and Raman spectroscopy techniques. Cerianite and hematite phases were identified in CeO2/Fe2O3 samples, indicating heterogeneous surface deposits. Photocatalytic testing under UV–Vis illumination for 5 h demonstrated promising results. For the degradation of bright green dye, efficiencies of 78.9 % and 90.1 % were achieved for pure CeO2 and CeO2 samples loaded with 1.0 mol% Fe2O3, respectively. Similarly, for oxytetracycline drug degradation, performance rates of 35.3 % and 67.0 % were observed for CeO2 and CeO2 samples loaded with 1.0 mol% Fe2O3, respectively. Recyclability tests showed a gradual decline in photocatalytic performance over successive cycles due to by-product accumulation contaminating the catalyst.
期刊介绍:
Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.