Domaschke M, Zhou X, Wergen L, Romeis S, Miehlich M, Meyer K, Peukert W, Schmuki P (2019)
Publication Type: Journal article
Publication year: 2019
Book Volume: 9
Pages Range: 3627-3632
Journal Issue: 4
Magneli phases of titanium dioxide (such as Ti4O7, Ti5O9, etc.) provide electronic properties, namely, a stable metallic behavior at room temperature. In this manuscript, we demonstrate that nanoscopic Magneli phases, formed intrinsically in anatase during a thermal aerosol synthesis, can enable significant photocatalytic H-2 generation-this without the use of any extrinsic cocatalyst in anatase. Under optimized conditions, mixed-phase particles of 30% anatase, 25% Ti4O7, and 20% Ti5O9 are obtained that can provide, under solar light, direct photocatalytic H-2 evolution at a rate of 145 mu mol h(-1) g(-1). These anatase particles contain 5-10 nm size intergrown phases of Ti4O7 and Ti5O9. Key is the metallic band of Ti4O7 that induces a particle internal charge separation and transfer cascade with suitable energetics and favorable dimensions that are highly effective for H-2 generation.
APA:
Domaschke, M., Zhou, X., Wergen, L., Romeis, S., Miehlich, M., Meyer, K.,... Schmuki, P. (2019). Magneli-Phases in Anatase Strongly Promote Cocatalyst-Free Photocatalytic Hydrogen Evolution. ACS Catalysis, 9(4), 3627-3632. https://dx.doi.org/10.1021/acscatal.9b00578
MLA:
Domaschke, Maximilian, et al. "Magneli-Phases in Anatase Strongly Promote Cocatalyst-Free Photocatalytic Hydrogen Evolution." ACS Catalysis 9.4 (2019): 3627-3632.
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