Qin S, Kim H, Denisov N, Fehn D, Schmidt J, Meyer K, Schmuki P (2020)
Publication Type: Journal article
Publication year: 2020
Recently, black and grey titania in various morphologies have been intensively investigated for their high performance in photocatalytic H2 generation. Here we use titania nanosheets with a large percentage of (001) facets and hydrogenate them to activate suitable Ti3+-Ov defects for co-catalyst free H2 generation. Key to a highly active nanosheet-catalyst is the prevention of serious deformation and sintering during the thermal hydrogenation. In this work, we present a systematic investigation of different thermally treated nanosheets characterized by SEM, HR-TEM, TEM-EDX, XRD, EPR, XPS, and photocatalytic H2 evolution performance. We describe how to achieve robust grey nanosheets with an intact two-dimensional shape that can endure hydrogenation at the required high temperatures. Due to a defined faceting, these optimized "grey" nanosheets can produce photocatalytic H2 at a higher rate than previously reported best performing grey nanoparticles – this in spite of having a lower BET than the reduced nanoparticles.
APA:
Qin, S., Kim, H., Denisov, N., Fehn, D., Schmidt, J., Meyer, K., & Schmuki, P. (2020). Grey facet-controlled anatase nanosheets for photocatalytic H2 evolution without co-catalyst. JPhys Energy. https://dx.doi.org/10.1088/2515-7655/abd5a8
MLA:
Qin, Shanshan, et al. "Grey facet-controlled anatase nanosheets for photocatalytic H2 evolution without co-catalyst." JPhys Energy (2020).
BibTeX: Download