The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites
This study presents the results of research on cement mortars amended with two zinc oxides obtained by two different methods: hydrothermal ZnO-H and microwave ZnO-M. Our work indicates that, in contrast to spherical ZnO-H, ZnO-M was characterized by a columnar particle habit with a BET surface area...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-01-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/3/1069 |
| _version_ | 1797486549134213120 |
|---|---|
| author | Izabela Klapiszewska Adam Kubiak Anna Parus Marcin Janczarek Agnieszka Ślosarczyk |
| author_facet | Izabela Klapiszewska Adam Kubiak Anna Parus Marcin Janczarek Agnieszka Ślosarczyk |
| author_sort | Izabela Klapiszewska |
| collection | DOAJ |
| description | This study presents the results of research on cement mortars amended with two zinc oxides obtained by two different methods: hydrothermal ZnO-H and microwave ZnO-M. Our work indicates that, in contrast to spherical ZnO-H, ZnO-M was characterized by a columnar particle habit with a BET surface area of 8 m<sup>2</sup>/g, which was four times higher than that obtained for hydrothermally obtained zinc oxide. In addition, ZnO-M induced much better antimicrobial resistance, which was also reported in cement mortar with this oxide. Both zinc oxides showed very good photocatalytic properties, as demonstrated by the 4-chlorophenol degradation test. The reaction efficiency was high, reaching the level of 90%. However, zinc oxides significantly delayed the cement binder setting: ZnO-H by 430 min and ZnO-M by 380 min. This in turn affected the increments in compressive strength of the produced mortars. No significant change in compressive strength was observed on the first day of setting, while significant changes in the strengths of mortars with both zinc oxides were observed later after 7 and 28 days of hardening. As of these times, the compressive strengths were about 13–15.5% and 12–13% higher than the corresponding values for the reference mortar, respectively, for ZnO-H and ZnO-M. There were no significant changes in plasticity and flexural strength of mortars amended with both zinc oxides. |
| first_indexed | 2024-03-09T23:34:50Z |
| format | Article |
| id | doaj.art-2923ec62538c46d399db70fb258c47dc |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:34:50Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-2923ec62538c46d399db70fb258c47dc2023-11-23T17:01:47ZengMDPI AGMaterials1996-19442022-01-01153106910.3390/ma15031069The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement CompositesIzabela Klapiszewska0Adam Kubiak1Anna Parus2Marcin Janczarek3Agnieszka Ślosarczyk4Institute of Building Engineering, Faculty of Civil and Transport Engineering, Poznan University of Technology, Piotrowo 3, PL-60965 Poznan, PolandInstitute of Chemistry and Technical Electrochemistry, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, PolandInstitute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, PolandInstitute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, PolandInstitute of Building Engineering, Faculty of Civil and Transport Engineering, Poznan University of Technology, Piotrowo 3, PL-60965 Poznan, PolandThis study presents the results of research on cement mortars amended with two zinc oxides obtained by two different methods: hydrothermal ZnO-H and microwave ZnO-M. Our work indicates that, in contrast to spherical ZnO-H, ZnO-M was characterized by a columnar particle habit with a BET surface area of 8 m<sup>2</sup>/g, which was four times higher than that obtained for hydrothermally obtained zinc oxide. In addition, ZnO-M induced much better antimicrobial resistance, which was also reported in cement mortar with this oxide. Both zinc oxides showed very good photocatalytic properties, as demonstrated by the 4-chlorophenol degradation test. The reaction efficiency was high, reaching the level of 90%. However, zinc oxides significantly delayed the cement binder setting: ZnO-H by 430 min and ZnO-M by 380 min. This in turn affected the increments in compressive strength of the produced mortars. No significant change in compressive strength was observed on the first day of setting, while significant changes in the strengths of mortars with both zinc oxides were observed later after 7 and 28 days of hardening. As of these times, the compressive strengths were about 13–15.5% and 12–13% higher than the corresponding values for the reference mortar, respectively, for ZnO-H and ZnO-M. There were no significant changes in plasticity and flexural strength of mortars amended with both zinc oxides.https://www.mdpi.com/1996-1944/15/3/1069zinc oxidecement compositeantibacterial teststrength test |
| spellingShingle | Izabela Klapiszewska Adam Kubiak Anna Parus Marcin Janczarek Agnieszka Ślosarczyk The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites Materials zinc oxide cement composite antibacterial test strength test |
| title | The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites |
| title_full | The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites |
| title_fullStr | The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites |
| title_full_unstemmed | The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites |
| title_short | The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites |
| title_sort | in situ hydrothermal and microwave syntheses of zinc oxides for functional cement composites |
| topic | zinc oxide cement composite antibacterial test strength test |
| url | https://www.mdpi.com/1996-1944/15/3/1069 |
| work_keys_str_mv | AT izabelaklapiszewska theinsituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT adamkubiak theinsituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT annaparus theinsituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT marcinjanczarek theinsituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT agnieszkaslosarczyk theinsituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT izabelaklapiszewska insituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT adamkubiak insituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT annaparus insituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT marcinjanczarek insituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites AT agnieszkaslosarczyk insituhydrothermalandmicrowavesynthesesofzincoxidesforfunctionalcementcomposites |