Selective transport of electron and hole among {0 0 1} and {1 1 0} facets of BiOCl for pure water splitting
Selective transport of electron and hole among {0 0 1} and {1 1 0} facets of BiOCl for pure water splitting
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DOI：
10.1016/j.apcatb.2014.07.024
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发表时间：
2015
影响因子：
22.1
通讯作者：
Ling Zhang;Wenzhong Wang;Songmei Sun;D. Jiang;Erping Gao
中科院分区：
文献类型：
--
作者：
Ling Zhang;Wenzhong Wang;Songmei Sun;D. Jiang;Erping Gao
光生电子和空穴到不同面的有效空间传输对于构建高效的太阳能转换系统至关重要。 BiOCl@Au/MnOx 分级结构是通过将 Au 和 MnOx 分别沉积在 BiOCl 的 {0 0 1} 和 {1 1 0} 晶面上而制备的。沿着<0 0 1>直接的内电场（EIEF），由快速形成的Au纳米粒子引起的强局域电场（ELEF）被认为是BiOCl半导体中电荷载流子空间分离和传输的内在驱动力，这导致在没有任何牺牲剂的情况下，太阳能驱动的纯水分解光催化活性显着增强。氧化还原助催化剂在单晶不同面上选择性沉积的特殊结构对于设计高效太阳能转换光催化剂来说应该是有前景和有趣的。
The efficient spatial transport of photo-generated electrons and holes to different facets is critical to construct an efficient solar energy conversion system. BiOCl@Au/MnOxhierarchical structure was fabricated by depositing the Au and MnOxon the {0 0 1} and {1 1 0} crystal facets of BiOCl, respectively. The internal electric field (EIEF) along the <0 0 1> direct, and strong local electric field (ELEF) induced by the fast formed Au nanoparticles have been proposed as the intrinsic driving force for the spatial separation and transport of charge carriers in the BiOCl semiconductor, which resulted in significant enhancement of solar-driven photocatalytic activity for the pure water splitting without any sacrificial agent. The special structure of selective deposition of redox cocatalysts on the different facets of a single crystal should be promising and intriguing for designing highly efficient solar energy conversion photocatalyst.