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Cubic-like BaZrO3 nanocrystals with exposed {001}/{011} facets and tuned electronic band structure for enhanced photocatalytic hydrogen production
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Cubic-like BaZrO3 nanocrystals with exposed {001}/{011} facets and tuned electronic band structure for enhanced photocatalytic hydrogen production
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Journal Article
Cubic-like BaZrO3 nanocrystals with exposed {001}/{011} facets and tuned electronic band structure for enhanced photocatalytic hydrogen production
2019
Overview
Facet engineering to expose specific surfaces has received rapid growth attention to promote the photocatalytic performance. In this work, we reported that BaZrO3 nanocrystals with {001}/{011} facets and corresponding higher reducing capacity could effectively improve the photocatalytic hydrogen evolution in pure water. The tuned electronic band structure arising from exposed specific {001}/{011} facets and the higher surface area are the main reasons to promote photocatalytic activity. The conduction band bottom for BaZrO3 nanocrystals with {001}/{011} facets synthesized by solvothermal method (denoted as BZO-HT) is about 0.31 eV higher than that of sample prepared by hydrothermal reaction (denoted as BZO-H). During the evaluation of photocatalytic activity in pure water, the H2 production rate for BZO-HT (27.80 μmol/g/h) is 9.4 times and six times higher than BZO-H and commercial BaZrO3 (denoted as BZO-C), respectively. This work provides a reference for other facets-related photocatalysts’ design for pure water reduction or splitting.
Publisher
Springer Nature B.V
