A Versatile Strategy for Shish-Kebab-like Multi-heterostructured Chalcogenides and Enhanced Photocatalytic Hydrogen Evolution

作者：Hu, Jianqiang; Liu, Aili; Jin, Huile; Ma, Dekun; Yin, Dewu; Ling, Pengsheng; Wang, Shun^*; Lin, Zhiqun; Wang, Jichang

来源：Journal of the American Chemical Society, 2015, 137(34): 11004-11010.

DOI：10.1021/jacs.5b04784

• POT CATION-EXCHANGE
• P-N-JUNCTION
• TELLURIUM NANOTUBES
• CDS-PT
• TIO2
• GENERATION
• NANOWIRES
• ENERGY
• ARRAYS
• NANOCRYSTALS

A series of multi-heterostructured metal chalcogenides (CdS-Te, NiS/CdS-Te, and MoS2/CdS-Te) with a surprising shish-kebab-like structure have been synthesized via a one-step microwave-assisted pyrolysis of dithiocarbamate precursors in ethylene glycol. Subsequently, CdS-Te composites were exploited as a self-sacrificial template to craft various CdS-Te@(Pt, Pd) multi-heterostructures. Highly uniform dispersion and intimate interactions between CdS and multicomponent cocatalysts, together with improved separation of photogenerated carriers due to the presence of Te nanotubes (NTs) and trace CdTe, enable CdS-based heterostructured photocatalysts to exhibit greatly enhanced efficiency and stability in the photocatalytic production of H-2. Thorough morphological growth of metal sulfide/Te heterostructures originates from the growth of Te tubes, which is likely governed by diffusion-limited depletion of the Te precursor and the dissolution-crystallization process of Te seeds followed by the formation of metal sulfide kebabs. characterizations revealed that the

• 出版日期2015-9-2
• 单位温州大学