Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde Degradation
Photocatalytic oxidation is considered one of the most effective ways to remove formaldehyde from indoor air. However, the use of powder photocatalysts is limited by their low adsorption capacity and strong aggregation tendency. Hence, there is a need for a composite material with good cycling stabi...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/3/972 |
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| author | Zhiqiang Lv Yi Ma Shanshan Jia Yan Qing Lei Li Yangyang Chen Yiqiang Wu |
| author_facet | Zhiqiang Lv Yi Ma Shanshan Jia Yan Qing Lei Li Yangyang Chen Yiqiang Wu |
| author_sort | Zhiqiang Lv |
| collection | DOAJ |
| description | Photocatalytic oxidation is considered one of the most effective ways to remove formaldehyde from indoor air. However, the use of powder photocatalysts is limited by their low adsorption capacity and strong aggregation tendency. Hence, there is a need for a composite material with good cycling stability and high degradation efficiency. In the present study, a unique wood-based composite is produced by arranging Cu–TiO<sub>2</sub> nanoparticles on porous structured wood. The porous structure of wood can adsorb formaldehyde, and the abundant functional groups on the surface can act as a reaction platform for anchoring the Cu–TiO<sub>2</sub> nanoparticles. Cu doping facilitates electron interaction between TiO<sub>2</sub> and Cu, promotes the transfer of charge carriers, lowers the electron–hole recombination rate, and improves the photocatalytic degradation efficiency of formaldehyde. The photocatalytic efficiency of the wood-based composites was highest (85.59%) when the n(Cu)/n(Ti) ratio was 7%. After nine cycles, the wood composites still had a high degradation rate, indicating good recyclability. Overall, this wood composite is an eco-friendly and promising material for indoor air filtration. |
| first_indexed | 2024-03-11T09:34:53Z |
| format | Article |
| id | doaj.art-ee754d5311a842cdadd3db83a586fa52 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T09:34:53Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-ee754d5311a842cdadd3db83a586fa522023-11-16T17:25:57ZengMDPI AGMolecules1420-30492023-01-0128397210.3390/molecules28030972Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde DegradationZhiqiang Lv0Yi Ma1Shanshan Jia2Yan Qing3Lei Li4Yangyang Chen5Yiqiang Wu6College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaCollege of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaCollege of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaCollege of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaCollege of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaCollege of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaCollege of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaPhotocatalytic oxidation is considered one of the most effective ways to remove formaldehyde from indoor air. However, the use of powder photocatalysts is limited by their low adsorption capacity and strong aggregation tendency. Hence, there is a need for a composite material with good cycling stability and high degradation efficiency. In the present study, a unique wood-based composite is produced by arranging Cu–TiO<sub>2</sub> nanoparticles on porous structured wood. The porous structure of wood can adsorb formaldehyde, and the abundant functional groups on the surface can act as a reaction platform for anchoring the Cu–TiO<sub>2</sub> nanoparticles. Cu doping facilitates electron interaction between TiO<sub>2</sub> and Cu, promotes the transfer of charge carriers, lowers the electron–hole recombination rate, and improves the photocatalytic degradation efficiency of formaldehyde. The photocatalytic efficiency of the wood-based composites was highest (85.59%) when the n(Cu)/n(Ti) ratio was 7%. After nine cycles, the wood composites still had a high degradation rate, indicating good recyclability. Overall, this wood composite is an eco-friendly and promising material for indoor air filtration.https://www.mdpi.com/1420-3049/28/3/972wood compositeCu-doped TiO<sub>2</sub>recyclabilityformaldehyde degradationphotocatalysis |
| spellingShingle | Zhiqiang Lv Yi Ma Shanshan Jia Yan Qing Lei Li Yangyang Chen Yiqiang Wu Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde Degradation Molecules wood composite Cu-doped TiO<sub>2</sub> recyclability formaldehyde degradation photocatalysis |
| title | Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde Degradation |
| title_full | Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde Degradation |
| title_fullStr | Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde Degradation |
| title_full_unstemmed | Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde Degradation |
| title_short | Synthesis of Cu-Doped TiO<sub>2</sub> on Wood Substrate with Highly Efficient Photocatalytic Performance and Outstanding Recyclability for Formaldehyde Degradation |
| title_sort | synthesis of cu doped tio sub 2 sub on wood substrate with highly efficient photocatalytic performance and outstanding recyclability for formaldehyde degradation |
| topic | wood composite Cu-doped TiO<sub>2</sub> recyclability formaldehyde degradation photocatalysis |
| url | https://www.mdpi.com/1420-3049/28/3/972 |
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