Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic Activity
Anatase TiO<sub>2</sub> hierarchically structured microspheres with co-exposed {001}/{101} facets were prepared by a facile one-pot hydrothermal method. The influences of reaction temperature on the morphology and crystallization of microspheres were investigated systematically. The obta...
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MDPI AG
2023-06-01
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| Online Access: | https://www.mdpi.com/2073-4344/13/6/995 |
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| author | Haisheng Huang Juan Wang Qi Kong Yao Xu Zhishun Wei Ying Chang |
| author_facet | Haisheng Huang Juan Wang Qi Kong Yao Xu Zhishun Wei Ying Chang |
| author_sort | Haisheng Huang |
| collection | DOAJ |
| description | Anatase TiO<sub>2</sub> hierarchically structured microspheres with co-exposed {001}/{101} facets were prepared by a facile one-pot hydrothermal method. The influences of reaction temperature on the morphology and crystallization of microspheres were investigated systematically. The obtained microspheres possessed better morphology and crystallization when the reaction temperature was 160 °C. Different noble metals (Au, Ag, Cu, Pt, Pd) were used for the microspheres modification, and the experimental results exhibited that the photocatalytic activities of the noble metal modified microspheres were enhanced obviously, especially for the Pt-modified sample (TPt), which showed the highest photocatalytic activity in degradation of tetracycline hydrochloride (the TPt sample showed the largest improvement, i.e., the activity reached 1.47 times higher than that of the bare sample) and hydrogen production (the largest improvement was also observed for the TPt sample, i.e., the activity was more than 30 times as the bare sample, reaching more than 300 μmol·g<sup>−1</sup>·h<sup>−1</sup>). Finally, a photocatalytic reaction mechanism involving the synergy of co-exposed {001}/{101} crystal facets with noble metals was proposed according to the as-obtained experimental results. |
| first_indexed | 2024-03-11T02:39:50Z |
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| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-11T02:39:50Z |
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| spelling | doaj.art-813e186fcffb48eb893183b7963b45a42023-11-18T09:42:14ZengMDPI AGCatalysts2073-43442023-06-0113699510.3390/catal13060995Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic ActivityHaisheng Huang0Juan Wang1Qi Kong2Yao Xu3Zhishun Wei4Ying Chang5Hubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, ChinaHubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, ChinaHubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, ChinaHubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, ChinaHubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, ChinaHubei Provincial Key Laboratory of Green Materials for Light Industry, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, ChinaAnatase TiO<sub>2</sub> hierarchically structured microspheres with co-exposed {001}/{101} facets were prepared by a facile one-pot hydrothermal method. The influences of reaction temperature on the morphology and crystallization of microspheres were investigated systematically. The obtained microspheres possessed better morphology and crystallization when the reaction temperature was 160 °C. Different noble metals (Au, Ag, Cu, Pt, Pd) were used for the microspheres modification, and the experimental results exhibited that the photocatalytic activities of the noble metal modified microspheres were enhanced obviously, especially for the Pt-modified sample (TPt), which showed the highest photocatalytic activity in degradation of tetracycline hydrochloride (the TPt sample showed the largest improvement, i.e., the activity reached 1.47 times higher than that of the bare sample) and hydrogen production (the largest improvement was also observed for the TPt sample, i.e., the activity was more than 30 times as the bare sample, reaching more than 300 μmol·g<sup>−1</sup>·h<sup>−1</sup>). Finally, a photocatalytic reaction mechanism involving the synergy of co-exposed {001}/{101} crystal facets with noble metals was proposed according to the as-obtained experimental results.https://www.mdpi.com/2073-4344/13/6/995titanium oxidemicrospherehierarchical structurenoble metalphotocatalysis |
| spellingShingle | Haisheng Huang Juan Wang Qi Kong Yao Xu Zhishun Wei Ying Chang Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic Activity Catalysts titanium oxide microsphere hierarchical structure noble metal photocatalysis |
| title | Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic Activity |
| title_full | Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic Activity |
| title_fullStr | Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic Activity |
| title_full_unstemmed | Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic Activity |
| title_short | Noble Metal Modified TiO<sub>2</sub> Hierarchically Structured Microspheres with Enhanced Photocatalytic Activity |
| title_sort | noble metal modified tio sub 2 sub hierarchically structured microspheres with enhanced photocatalytic activity |
| topic | titanium oxide microsphere hierarchical structure noble metal photocatalysis |
| url | https://www.mdpi.com/2073-4344/13/6/995 |
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