A general strategy towards controllable replication of butterfly wings for robust light photocatalysis
Large-scale replication of the hierarchical microstructure of bio-template is a long-standing challenge due to the large shrinkage when the bio-templates are burned off. In this work, TiO2 based biomimetic metamaterials have been successfully synthesized by sputtering technique, followed by tape as...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/156127 |
| _version_ | 1826114208580763648 |
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| author | Zhu, Minmin Zhang, Haizhong Shoo, Favier Wen Long Zhao, Yida Guo, Huilu Du, Zehui |
| author_facet | Zhu, Minmin Zhang, Haizhong Shoo, Favier Wen Long Zhao, Yida Guo, Huilu Du, Zehui |
| author_sort | Zhu, Minmin |
| collection | NTU |
| description | Large-scale replication of the hierarchical microstructure of bio-template is a long-standing challenge due
to the large shrinkage when the bio-templates are burned off. In this work, TiO2 based biomimetic metamaterials have been successfully synthesized by sputtering technique, followed by tape assisted transferring and thermal oxidation process. Tile-like arrays of the scale replicas with ridge-lamellae hierarchical microstructures have been obtained and exhibit bright blue-purple structure color. More interestingly, they exhibit significantly enhanced photocatalytic activity to decompose methylene blue under solar light illumination, with the degradation rate of methylene blue almost five times that of TiO2 thin films with the same sample area. The enhancement on the visible light photocatalytic activity in TiO2 replicas can
be attributed to a synergy effect of the presence of Ti3+ doping, the air-TO2 interaction, and hierarchical
microstructure. The controlling factors that affect the microstructure, structural color and photocatalytic
activity of the TiO2 replicas have been discussed in detail. This work offers a scalable and precise approach to replicate various bio-templates based on transition metal oxides, such as ZnO, Fe3O4, CoO, and
VO2, thereby providing the new opportunity for infrared sensing, photocatalytic and photonic applications. |
| first_indexed | 2024-10-01T03:35:43Z |
| format | Journal Article |
| id | ntu-10356/156127 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:35:43Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1561272022-04-22T06:46:47Z A general strategy towards controllable replication of butterfly wings for robust light photocatalysis Zhu, Minmin Zhang, Haizhong Shoo, Favier Wen Long Zhao, Yida Guo, Huilu Du, Zehui Engineering::Materials Photocatalysis Biomimetic Metamaterial Structural Color Sputtering Large-scale replication of the hierarchical microstructure of bio-template is a long-standing challenge due to the large shrinkage when the bio-templates are burned off. In this work, TiO2 based biomimetic metamaterials have been successfully synthesized by sputtering technique, followed by tape assisted transferring and thermal oxidation process. Tile-like arrays of the scale replicas with ridge-lamellae hierarchical microstructures have been obtained and exhibit bright blue-purple structure color. More interestingly, they exhibit significantly enhanced photocatalytic activity to decompose methylene blue under solar light illumination, with the degradation rate of methylene blue almost five times that of TiO2 thin films with the same sample area. The enhancement on the visible light photocatalytic activity in TiO2 replicas can be attributed to a synergy effect of the presence of Ti3+ doping, the air-TO2 interaction, and hierarchical microstructure. The controlling factors that affect the microstructure, structural color and photocatalytic activity of the TiO2 replicas have been discussed in detail. This work offers a scalable and precise approach to replicate various bio-templates based on transition metal oxides, such as ZnO, Fe3O4, CoO, and VO2, thereby providing the new opportunity for infrared sensing, photocatalytic and photonic applications. 2022-04-22T06:46:47Z 2022-04-22T06:46:47Z 2022 Journal Article Zhu, M., Zhang, H., Shoo, F. W. L., Zhao, Y., Guo, H. & Du, Z. (2022). A general strategy towards controllable replication of butterfly wings for robust light photocatalysis. Journal of Materials Science & Technology, 105, 286-292. https://dx.doi.org/10.1016/j.jmst.2021.07.035 1005-0302 https://hdl.handle.net/10356/156127 10.1016/j.jmst.2021.07.035 105 286 292 en Journal of Materials Science & Technology © 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. All rights reserved. |
| spellingShingle | Engineering::Materials Photocatalysis Biomimetic Metamaterial Structural Color Sputtering Zhu, Minmin Zhang, Haizhong Shoo, Favier Wen Long Zhao, Yida Guo, Huilu Du, Zehui A general strategy towards controllable replication of butterfly wings for robust light photocatalysis |
| title | A general strategy towards controllable replication of butterfly wings for robust light photocatalysis |
| title_full | A general strategy towards controllable replication of butterfly wings for robust light photocatalysis |
| title_fullStr | A general strategy towards controllable replication of butterfly wings for robust light photocatalysis |
| title_full_unstemmed | A general strategy towards controllable replication of butterfly wings for robust light photocatalysis |
| title_short | A general strategy towards controllable replication of butterfly wings for robust light photocatalysis |
| title_sort | general strategy towards controllable replication of butterfly wings for robust light photocatalysis |
| topic | Engineering::Materials Photocatalysis Biomimetic Metamaterial Structural Color Sputtering |
| url | https://hdl.handle.net/10356/156127 |
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