Solar hydrogen evolution over native visible-light-driven Sn3O4
Solar hydrogen evolution over native visible-light-driven Sn3O4
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DOI：
10.1016/j.ijhydene.2020.07.160
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发表时间：
2020-08
影响因子：
7.2
通讯作者：
T. Tanabe;Tatsuhiro Tanikawa;Katsutoshi Nakamori;S. Ueda;B. Nanzai;Yasuo Matsubara;Futoshi Matsumoto
中科院分区：
文献类型：
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作者：
T. Tanabe;Tatsuhiro Tanikawa;Katsutoshi Nakamori;S. Ueda;B. Nanzai;Yasuo Matsubara;Futoshi Matsumoto
能够有效收集太阳能并从水或醇中产生氢气的低成本半导体光催化剂对于未来的氢经济至关重要。到目前为止，在主体材料中负载助催化剂和/或掺杂异质元素对于半导体光催化剂产生显着的氢气释放至关重要。我们合成了原生可见光驱动的 Sn3O4 光催化剂，在可见光 (λ > 400 nm) 照射下，在没有助催化剂的情况下，它可以显着催化各种醇溶液中的析氢。制氢反应通过甲醇溶液中的羟烷基自由基反应进行。 Sn3O4 的表观量子产率为 0.4%，与可见光敏感助催化剂负载的掺杂光催化剂相当。增强的析氢归因于 Sn3O4 在可见光下产氢所需的带隙和带边缘位置（CBM 和 VBM），这源于 Sn3O4 的原子层状结构。 Sn3O4材料是一种很有前景的光催化剂，用于太阳能从醇制氢。
Low-cost semiconductor photocatalysts that can efficiently harvest solar energy and generate H2from water or alcohols will be critical to future hydrogen economies. Co-catalyst loading and/or doping of foreign element at host material have been crucial for semiconductor photocatalyst to produce significant H2evolution, so far. We synthesized native-visible-light driven Sn3O4photocatalyst, which significantly catalyzed hydrogen evolution from various alcohol solutions under irradiation of visible light (λ > 400 nm), without co-catalyst. The H2production reaction proceeded through hydroxyalkyl radical reaction in the methanol solution. The apparent quantum yield was 0.4% for the Sn3O4competitive to that of visible-light-sensitive co-catalyst loaded doped photocatalyst. The enhanced hydrogen evolution is attributed to the desirable band gap and band edge positions (CBM and VBM) of the Sn3O4for H2production in visible light, which would originate from atomically layered structure of Sn3O4. The Sn3O4material is good promising photocatalyst for solar hydrogen production from alcohols.