Ag nanowire-modified 1D α-Fe2O3 nanotube arrays for photocatalytic degradation of methylene blue
Source abstract
Abstract
An in-situ photoreduction strategy is applied to coat Ag nanowires (NWs) directly onto the surface of one-dimensional (1D) α-Fe2O3 nanotube arrays (NTAs) fabricated by anodization treatment, and their chemical composition, morphologies, optical properties, and stability are systematically characterized. Structural characterization results manifest that Ag NWs are successfully anchored on α-Fe2O3 NTAs with the average nanotube diameter of 80 nm and confirm the formation of Ag/α-Fe2O3 NTA heterostructure. An apparent red shift in absorption edges of Ag/α-Fe2O3 NTAs is observed. Particularly, the 30-min Ag/α-Fe2O3 NTAs with Ag NW’s average length of 100 nm display the best photocatalytic ability for photocatalytic degradation of methylene blue (MB) dye under visible light illumination, owing to the synergistic effect of the localized surface plasmon resonance (LSPR) on Ag NWs as well as the synergistic effect on the electron delivery and effective separation of photogenerated carriers between Ag NWs and α-Fe2O3 NTAs. In addition, the photogenerated holes (h+) and superoxide radicals (O2 ·−) played crucial roles during the photocatalytic process.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Iron oxide chemistry and applications · Advanced Photocatalysis Techniques · Nanomaterials for catalytic reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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