Synthesis of Few-Layer MoS2 Nanosheet-Coated TiO2 Nanobelt Heterostructures for Enhanced Photocatalytic Activities
Synthesis of Few-Layer MoS2 Nanosheet-Coated TiO2 Nanobelt Heterostructures for Enhanced Photocatalytic Activities
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DOI：
10.1002/smll.201201161
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发表时间：
2013-01-14
期刊：
影响因子：
13.3
通讯作者：
Zhang, Hua
中科院分区：
文献类型：
--
作者：
Zhou, Weijia;Yin, Zongyou;Zhang, Hua
采用水热法制备了MoS 2纳米片包覆的TiO 2纳米带异质结构（简称TiO2@MoS2）.作为合成模板的TiO 2纳米带抑制了MoS 2晶体沿c轴沿着的生长，从而在TiO 2纳米带上形成了少层的MoS 2纳米片涂层。所制备的TiO2@MoS2异质结构显示出高的光催化产氢，即使没有Pt助催化剂。重要的是，具有50wt%MoS2的TiO2@MoS2异质结构表现出最高的产氢速率，为1.6 mmol h-1g-1。此外，这种异质结构对有机染料具有很强的吸附能力，并且在染料分子的光催化降解中显示出高性能。
MoS2 nanosheet-coated TiO2 nanobelt heterostructuresreferred to as TiO2@MoS2with a 3D hierarchical configuration are prepared via a hydrothermal reaction. The TiO2 nanobelts used as a synthetic template inhibit the growth of MoS2 crystals along the c-axis, resulting in a few-layer MoS2 nanosheet coating on the TiO2 nanobelts. The as-prepared TiO2@MoS2 heterostructure shows a high photocatalytic hydrogen production even without the Pt co-catalyst. Importantly, the TiO2@MoS2 heterostructure with 50 wt% of MoS2 exhibits the highest hydrogen production rate of 1.6 mmol h-1g-1. Moreover, such a heterostructure possesses a strong adsorption ability towards organic dyes and shows high performance in photocatalytic degradation of the dye molecules.