Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactions
La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts were synthesized in 1 M NaOH aqueous solution, via a stoichiometric 1:1 Bi:Mn molar ratio hydrothermal method at 180 °C for 48 h. Bi(NO3)3, MnO2, La(NO3)3 and Sm2O3 were used as raw materials. The synthesized nanomaterials were characterized by powder X-r...
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| Format: | Article |
| Language: | English |
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Nanoscience and Nanotechnology Research Center, University of Kashan
2019-01-01
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| Series: | Journal of Nanostructures |
| Subjects: | |
| Online Access: | http://jns.kashanu.ac.ir/article_87906_709df3439fd3da4a9b43ddc3771df776.pdf |
| _version_ | 1818254656216760320 |
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| author | Shahin Khademinia Mahdi Behzad |
| author_facet | Shahin Khademinia Mahdi Behzad |
| author_sort | Shahin Khademinia |
| collection | DOAJ |
| description | La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts were synthesized in 1 M NaOH aqueous solution, via a stoichiometric 1:1 Bi:Mn molar ratio hydrothermal method at 180 °C for 48 h. Bi(NO3)3, MnO2, La(NO3)3 and Sm2O3 were used as raw materials. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique. Both of the La3+ and Sm3+ - doped Bi2Mn2O7 nanomaterials were crystallized in a cubic crystal structure with space group Fd3 ̄m. The morphologies of the synthesized materials were studied by field emission scanning electron microscope (FESEM). The optical properties of the as-synthesized nanomaterials were studied by ultraviolet visible (UV-Vis) diffuse reflectance spectra (DRS). It was found that the optical band gaps were increased with dopoing La3+ and Sm3+ into Bi2Mn2O7. Catalytic performance of the synthesized nanomaterials were investigated in Biginelli reactions which showed excellent efficiency. Correlation between the catalytic performance with the band gap and hard/soft proportion of the metal ions was shown. |
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| id | doaj.art-a5b32d843a1448ccaec6c6bd7d917aaf |
| institution | Directory Open Access Journal |
| issn | 2251-7871 2251-788X |
| language | English |
| last_indexed | 2024-12-12T16:59:26Z |
| publishDate | 2019-01-01 |
| publisher | Nanoscience and Nanotechnology Research Center, University of Kashan |
| record_format | Article |
| series | Journal of Nanostructures |
| spelling | doaj.art-a5b32d843a1448ccaec6c6bd7d917aaf2022-12-22T00:18:10ZengNanoscience and Nanotechnology Research Center, University of KashanJournal of Nanostructures2251-78712251-788X2019-01-019117218210.22052/JNS.2019.01.01987906Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactionsShahin Khademinia0Mahdi Behzad1Department of chemistry, Semnan University, Semnan, IranDepartment of chemistry, Semnan University, Semnan, IranLa3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts were synthesized in 1 M NaOH aqueous solution, via a stoichiometric 1:1 Bi:Mn molar ratio hydrothermal method at 180 °C for 48 h. Bi(NO3)3, MnO2, La(NO3)3 and Sm2O3 were used as raw materials. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique. Both of the La3+ and Sm3+ - doped Bi2Mn2O7 nanomaterials were crystallized in a cubic crystal structure with space group Fd3 ̄m. The morphologies of the synthesized materials were studied by field emission scanning electron microscope (FESEM). The optical properties of the as-synthesized nanomaterials were studied by ultraviolet visible (UV-Vis) diffuse reflectance spectra (DRS). It was found that the optical band gaps were increased with dopoing La3+ and Sm3+ into Bi2Mn2O7. Catalytic performance of the synthesized nanomaterials were investigated in Biginelli reactions which showed excellent efficiency. Correlation between the catalytic performance with the band gap and hard/soft proportion of the metal ions was shown.http://jns.kashanu.ac.ir/article_87906_709df3439fd3da4a9b43ddc3771df776.pdfhydrothermallanthanumsamariumpyrochloresnanocatalystsbiginelli |
| spellingShingle | Shahin Khademinia Mahdi Behzad Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactions Journal of Nanostructures hydrothermal lanthanum samarium pyrochlores nanocatalysts biginelli |
| title | Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactions |
| title_full | Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactions |
| title_fullStr | Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactions |
| title_full_unstemmed | Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactions |
| title_short | Hydrothermal synthesis, characterization and catalytic performance of La3+ and Sm3+ - doped Bi2Mn2O7 nanocatalysts for Biginelli reactions |
| title_sort | hydrothermal synthesis characterization and catalytic performance of la3 and sm3 doped bi2mn2o7 nanocatalysts for biginelli reactions |
| topic | hydrothermal lanthanum samarium pyrochlores nanocatalysts biginelli |
| url | http://jns.kashanu.ac.ir/article_87906_709df3439fd3da4a9b43ddc3771df776.pdf |
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