Surfactant-Free Nonaqueous Synthesis of Plasmonic Molybdenum Oxide Nanosheets with Enhanced Catalytic Activity for Hydrogen Generation from Ammonia Borane under Visible Light
Surfactant-Free Nonaqueous Synthesis of Plasmonic Molybdenum Oxide Nanosheets with Enhanced Catalytic Activity for Hydrogen Generation from Ammonia Borane under Visible Light
复制标题
DOI：
10.1002/anie.201309759
复制
发表时间：
2014-03-10
影响因子：
16.6
通讯作者：
Yamashita, Hiromi
中科院分区：
文献类型：
--
作者：
Cheng, Hefeng;Kamegawa, Takashi;Yamashita, Hiromi
等离子体材料引起了人们越来越多的兴趣，特别是具有丰富元素和低电阻损耗的非传统半导体纳米结构。然而，在等离子体半导体纳米结构中实现高效催化仍然是一个挑战，因为在它们的合成过程中存在表面覆盖剂。为了实现这一点，在没有表面活性剂的情况下，采用了一种简单的非水程序来制备定义良好的氧化钼纳米片。所获得的MoO3-x纳米片由于局部表面等离子体共振而在宽范围内显示出强烈的吸收，可以从可见光区调谐到近红外区。在此，我们证明了这种等离子体半导体纳米结构可以作为高效催化剂，在可见光照射下显著提高氨硼烷的产氢活性。
Plasmonic materials have drawn emerging interest, especially in nontraditional semiconductor nanostructures with earth-abundant elements and low resistive loss. However, the actualization of highly efficient catalysis in plasmonic semiconductor nanostructures is still a challenge, owing to the presence of surface-capping agents in their synthetic procedures. To fulfill this, a facile non-aqueous procedure was employed to prepare well-defined molybdenum oxide nano-sheets in the absence of surfactants. The obtained MoO3-x nanosheets display intense absorption in a wide range attributed to the localized surface plasmon resonances, which can be tuned from the visible to the near-infrared region. Herein, we demonstrate that such plasmonic semiconductor nanostructures could be used as highly efficient catalysts that dramatically enhance the hydrogen-generation activity of ammonia borane under visible light irradiation.