Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial Agents
<b>: </b>We report here a simple two-stage synthesis of zinc–cobalt oxide nanoparticles. We used Zn/Co-zeolite imidazolate framework (ZIF)-8 materials as precursors for annealing and optional impregnation with a silicon source for the formation of a protective layer on the surface of oxi...
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doaj-6a93e86bcb684669aa7b41bc557a89d52020-11-25T03:10:57ZengMDPI AGNanomaterials2079-49912020-06-01101275127510.3390/nano10071275Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial AgentsVera V. Butova0Vladimir A. Polyakov1Elena A. Erofeeva2Sofia A. Efimova3Mikhail A. Soldatov4Alexander L. Trigub5Yury V. Rusalev6Alexander V. Soldatov7The Smart Materials Research Institute, Southern Federal University, Sladkova str. 178/24, 344090 Rostov-on-Don, RussiaThe Smart Materials Research Institute, Southern Federal University, Sladkova str. 178/24, 344090 Rostov-on-Don, RussiaThe Smart Materials Research Institute, Southern Federal University, Sladkova str. 178/24, 344090 Rostov-on-Don, RussiaThe Smart Materials Research Institute, Southern Federal University, Sladkova str. 178/24, 344090 Rostov-on-Don, RussiaThe Smart Materials Research Institute, Southern Federal University, Sladkova str. 178/24, 344090 Rostov-on-Don, RussiaNational Research Centre, Kurchatov Institute, 1 Akademika Kurchatova pl, 123182 Moscow, RussiaThe Smart Materials Research Institute, Southern Federal University, Sladkova str. 178/24, 344090 Rostov-on-Don, RussiaThe Smart Materials Research Institute, Southern Federal University, Sladkova str. 178/24, 344090 Rostov-on-Don, Russia<b>: </b>We report here a simple two-stage synthesis of zinc–cobalt oxide nanoparticles. We used Zn/Co-zeolite imidazolate framework (ZIF)-8 materials as precursors for annealing and optional impregnation with a silicon source for the formation of a protective layer on the surface of oxide nanoparticles. Using bimetallic ZIFs allowed us to trace the phase transition of the obtained oxide nanoparticles from wurtzite ZnO to spinel Co<sub>3</sub>O<sub>4</sub> structures. Using (X-Ray diffraction) XRD and (X-ray Absorption Near Edge Structure) XANES techniques, we confirmed the incorporation of cobalt ions into the ZnO structure up to 5 mol.% of Co. Simple annealing of Zn/Co-ZIF-8 materials in the air led to the formation of oxide nanoparticles of about 20–30 nm, while additional treatment of ZIFs with silicon source resulted in nanoparticles of about 5–10 nm covered with protective silica layer. We revealed the incorporation of oxygen vacancies in the obtained ZnO nanoparticles using FTIR analysis. All obtained samples were comprehensively characterized, including analysis with a synchrotron radiation source.https://www.mdpi.com/2079-4991/10/7/1275ZIF-8ZIF-67bimetalliczinc oxidecobalt dopingpyrolysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Vera V. Butova Vladimir A. Polyakov Elena A. Erofeeva Sofia A. Efimova Mikhail A. Soldatov Alexander L. Trigub Yury V. Rusalev Alexander V. Soldatov |
spellingShingle |
Vera V. Butova Vladimir A. Polyakov Elena A. Erofeeva Sofia A. Efimova Mikhail A. Soldatov Alexander L. Trigub Yury V. Rusalev Alexander V. Soldatov Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial Agents Nanomaterials ZIF-8 ZIF-67 bimetallic zinc oxide cobalt doping pyrolysis |
author_facet |
Vera V. Butova Vladimir A. Polyakov Elena A. Erofeeva Sofia A. Efimova Mikhail A. Soldatov Alexander L. Trigub Yury V. Rusalev Alexander V. Soldatov |
author_sort |
Vera V. Butova |
title |
Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial Agents |
title_short |
Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial Agents |
title_full |
Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial Agents |
title_fullStr |
Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial Agents |
title_full_unstemmed |
Synthesis of ZnO Nanoparticles Doped with Cobalt Using Bimetallic ZIFs as Sacrificial Agents |
title_sort |
synthesis of zno nanoparticles doped with cobalt using bimetallic zifs as sacrificial agents |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2020-06-01 |
description |
<b>: </b>We report here a simple two-stage synthesis of zinc–cobalt oxide nanoparticles. We used Zn/Co-zeolite imidazolate framework (ZIF)-8 materials as precursors for annealing and optional impregnation with a silicon source for the formation of a protective layer on the surface of oxide nanoparticles. Using bimetallic ZIFs allowed us to trace the phase transition of the obtained oxide nanoparticles from wurtzite ZnO to spinel Co<sub>3</sub>O<sub>4</sub> structures. Using (X-Ray diffraction) XRD and (X-ray Absorption Near Edge Structure) XANES techniques, we confirmed the incorporation of cobalt ions into the ZnO structure up to 5 mol.% of Co. Simple annealing of Zn/Co-ZIF-8 materials in the air led to the formation of oxide nanoparticles of about 20–30 nm, while additional treatment of ZIFs with silicon source resulted in nanoparticles of about 5–10 nm covered with protective silica layer. We revealed the incorporation of oxygen vacancies in the obtained ZnO nanoparticles using FTIR analysis. All obtained samples were comprehensively characterized, including analysis with a synchrotron radiation source. |
topic |
ZIF-8 ZIF-67 bimetallic zinc oxide cobalt doping pyrolysis |
url |
https://www.mdpi.com/2079-4991/10/7/1275 |
work_keys_str_mv |
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