{"title":"可见光下Mnx Co1-x Fe2 O4比Znx Co1-x Fe2 O4光催化活性增强的比较研究","authors":"M. Srinivas, L. Devi","doi":"10.7598/cst2019.1604","DOIUrl":null,"url":null,"abstract":": Zn x Co 1-x Fe 2 O 4 and Mn x Co 1-x Fe 2 O 4 (where x=0.5 atom %) catalysts were synthesized by sol-gel technique and were further characterized by various analytical techniques. PXRD pattern confirms cubic spinel structure for both the samples. UV-Visible spectra show extended absorption in the visible region and the band gap values of Zn 0.5 Co 0.5 Fe 2 O 4 and Mn 0.5 Co 0.5 Fe 2 O 4 catalysts were found to be 1.71 and 1.67 eV. Photocatalytic of experiments show that Mn 0.5 Co 0.5 Fe 2 O 4 is a better photocatalyst compared to the Zn 0.5 Co 0.5 Fe 2 O 4 due to the unique characteristics of Mn 2+ ion which can exist in different oxidation states. confirms doped PL show lesser recombination of photogenerated charge carriers for 0.5 Co 0.5 Fe 2 O 4 compared to 0.5 Co 0.5 Fe 2 O 4 catalyst. photocatalytic activity of Mn 0.5 Co 0.5 Fe 2 O 4 catalyst is higher than the activity of CoFe and","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"2 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2019-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Enhanced Photocatalytic Activity of Mnx Co1-x Fe2 O4 Over the Znx Co1-x Fe2 O4 Under the Visible Light Irradiation: A Comparative Study\",\"authors\":\"M. Srinivas, L. Devi\",\"doi\":\"10.7598/cst2019.1604\",\"DOIUrl\":null,\"url\":null,\"abstract\":\": Zn x Co 1-x Fe 2 O 4 and Mn x Co 1-x Fe 2 O 4 (where x=0.5 atom %) catalysts were synthesized by sol-gel technique and were further characterized by various analytical techniques. PXRD pattern confirms cubic spinel structure for both the samples. UV-Visible spectra show extended absorption in the visible region and the band gap values of Zn 0.5 Co 0.5 Fe 2 O 4 and Mn 0.5 Co 0.5 Fe 2 O 4 catalysts were found to be 1.71 and 1.67 eV. Photocatalytic of experiments show that Mn 0.5 Co 0.5 Fe 2 O 4 is a better photocatalyst compared to the Zn 0.5 Co 0.5 Fe 2 O 4 due to the unique characteristics of Mn 2+ ion which can exist in different oxidation states. confirms doped PL show lesser recombination of photogenerated charge carriers for 0.5 Co 0.5 Fe 2 O 4 compared to 0.5 Co 0.5 Fe 2 O 4 catalyst. photocatalytic activity of Mn 0.5 Co 0.5 Fe 2 O 4 catalyst is higher than the activity of CoFe and\",\"PeriodicalId\":10087,\"journal\":{\"name\":\"Chemical science transactions\",\"volume\":\"2 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-04-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical science transactions\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.7598/cst2019.1604\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical science transactions","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.7598/cst2019.1604","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
采用溶胶-凝胶法合成了Zn × Co 1-x fe2o和Mn × Co 1-x fe2o(其中x=0.5原子%)催化剂，并用各种分析技术对其进行了进一步表征。PXRD图证实了两种样品的立方尖晶石结构。紫外可见光谱显示在可见光区吸收扩展，zn0.5 co0.5 fe2o4和mn0.5 co0.5 fe2o4催化剂的带隙值分别为1.71和1.67 eV。光催化实验表明，Mn 0.5 Co 0.5 fe2o4是一种比Zn 0.5 Co 0.5 fe2o4更好的光催化剂，因为Mn 2+离子可以存在于不同的氧化态。证实掺杂的PL在0.5 Co . 0.5 Fe . 2o4催化剂下，与0.5 Co . 0.5 Fe . 2o4催化剂相比，光生载流子的重组更少。mn0.5 co0.5 fe2o催化剂的光催化活性高于CoFe和CoFe催化剂的光催化活性
The Enhanced Photocatalytic Activity of Mnx Co1-x Fe2 O4 Over the Znx Co1-x Fe2 O4 Under the Visible Light Irradiation: A Comparative Study
: Zn x Co 1-x Fe 2 O 4 and Mn x Co 1-x Fe 2 O 4 (where x=0.5 atom %) catalysts were synthesized by sol-gel technique and were further characterized by various analytical techniques. PXRD pattern confirms cubic spinel structure for both the samples. UV-Visible spectra show extended absorption in the visible region and the band gap values of Zn 0.5 Co 0.5 Fe 2 O 4 and Mn 0.5 Co 0.5 Fe 2 O 4 catalysts were found to be 1.71 and 1.67 eV. Photocatalytic of experiments show that Mn 0.5 Co 0.5 Fe 2 O 4 is a better photocatalyst compared to the Zn 0.5 Co 0.5 Fe 2 O 4 due to the unique characteristics of Mn 2+ ion which can exist in different oxidation states. confirms doped PL show lesser recombination of photogenerated charge carriers for 0.5 Co 0.5 Fe 2 O 4 compared to 0.5 Co 0.5 Fe 2 O 4 catalyst. photocatalytic activity of Mn 0.5 Co 0.5 Fe 2 O 4 catalyst is higher than the activity of CoFe and
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