Co-deposition of Ag and Co3O4 on black TiO2-x nanotubes with enhanced photocatalytic activity under visible light irradiation
Source abstract
Abstract
Due to the development of industries, environmental problems attract much attention, and photocatalyst degradation of dye materials has been considered an effective way to solve the problems. Herein, the strategy that decorates Ag and Co3O4 nanoparticles on the black TiO2-x nanotube arrays substrate (Ag/Co3O4/TiO2-x@Ti) is constructed to enhance the photodegradation properties of the catalyst under visible light irradiation. The composite Ag/Co3O4/TiO2-x@Ti demonstrates enhanced visible light absorption due to the local surface plasmon resonance (LSPR) of Ag nanoparticles as well as the formation of oxygen vacancy and Ti3+ in black TiO2-x nanotube arrays substrate. Moreover, the Ag/Co3O4/TiO2-x@Ti exhibit enhanced degradation performance compared to the single Ag/TiO2-x@Ti system, the photocatalytic efficiency of Ag/Co3O4/TiO2-x@Ti in degradation MB was 1.2 times higher. Furthermore, the photocatalyst performance of Ag/Co3O4/TiO2-x@Ti in the degradation of MB is 1.5 and 5.2 times higher than that of black TiO2-x nanotube arrays and white TiO2 nanotube arrays, respectively. The improved photocatalytic activities can be attributed to the effect of the strong absorption under visible light, the effective separation of electrons and holes during the reaction, and the decreased bandgap due to the black TiO2-x.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
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