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Multifunctional TiO 2 Nanotube-Matrix Composites with Enhanced Photocatalysis and Lithium-Ion Storage Performances.
- Source :
- Materials (1996-1944); Apr2023, Vol. 16 Issue 7, p2716, 14p
- Publication Year :
- 2023
-
Abstract
- As a multifunctional material, TiO<subscript>2</subscript> shows excellent performance in catalytic degradation and lithium-ion storage. However, high electron-hole pair recombination, poor conductivity, and low theoretical capacity severely limit the practical application of TiO<subscript>2</subscript>. Herein, TiO<subscript>2</subscript> nanotube (TiO<subscript>2</subscript> NT) with a novel double-layer honeycomb structure were prepared by two-step electrochemical anodization. Honeycombed TiO<subscript>2</subscript> NT arrays possess clean top surfaces and a long-range ordering, which greatly facilitates the preparation of high-performance binary and ternary materials. A binary TiO<subscript>2</subscript> nanotube@Au nanoparticle (TiO<subscript>2</subscript> NT@Au NP) composite accompanied by appropriately concentrated and uniformly distributed gold particles was prepared in this work. Interestingly, the TiO<subscript>2</subscript> nanotube@Au nanoparticle (TiO<subscript>2</subscript> NT@Au NP) composites not only showed the excellent catalytic degradation effect of methylene blue, but also demonstrated large lithium-ion storage capacity (310.6 μAh cm<superscript>−2</superscript>, 1.6 times of pristine TiO<subscript>2</subscript> NT). Based on the realization of the controllable fabrication of binary TiO<subscript>2</subscript> nanotube@MoS<subscript>2</subscript> nanosheet (TiO<subscript>2</subscript> NT@MoS<subscript>2</subscript> NS) composite, ternary TiO<subscript>2</subscript> nanotube@MoS<subscript>2</subscript> nanosheet@Au nanoparticle (TiO<subscript>2</subscript> NT@MoS<subscript>2</subscript> NS@Au NP) composite with abundant defects and highly ordered structure was also innovatively designed and fabricated. As expected, the TiO<subscript>2</subscript> NT@MoS<subscript>2</subscript> NS@Au NP anode exhibits extremely high initial discharge specific capacity (487.4 μAh cm<superscript>−2</superscript>, 2.6 times of pristine TiO<subscript>2</subscript> NT) and excellent capacity retention (81.0%). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 16
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Materials (1996-1944)
- Publication Type :
- Academic Journal
- Accession number :
- 163042444
- Full Text :
- https://doi.org/10.3390/ma16072716