Heterostructured SnS2/SnO2 nanotubes with enhanced charge separation and excellent photocatalytic hydrogen production. (2nd August 2018)

• Record Type: Journal Article
• Authors: Li, Yue-Ying; Wang, Jian-Gan; Sun, Huan-Huan; Hua, Wei; Liu, Xing-Rui
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 31(2018)
• Page Start: 14121
• Page End: 14129
• Publication Date: 2018-08-02
• Subjects: SnO2 -- SnS2 -- Heterostructure -- Photocatalytic hydrogen evolution; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.05.130
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: SnO2, a promising candidate for photocatalytic water splitting, displays poor activity due to insufficient light utilization and rapid electron-hole recombination of charge carriers. Herein, one-dimensional heterostructures of SnO2 /SnS2 nanotubes was designed and synthesized through a facile electrospinning followed by vulcanized method. The unique heterostructured SnO2 /SnS2 could simultaneously promote photocarrier transport and suppress charge recombination through the uniquely coupled SnO2 /SnS2 heterogeneous interface. Additionally, the optimized type-II heterostructure could also improve light absorption and weak the barrier of photocharge transfer. As a result, the SnO2 /SnS2 exhibited excellent photocatalytic H2 evolution performance under simulated light irradiation with high H2 production rate of 50 μmol h −1 without the use of any noble metal co-catalyst, which is 4.2 times higher than that of pure SnO2 under the same condition. Highlights: Heterostructured SnO2 /SnS2 nanotubes are successfully acquired. The introduction of SnS2 exerts positive effect on the optical properties of SnO2 . The SnO2 /SnS2 has enhanced carrier separation ability. The SnO2 /SnS2 owns high photocatalytic H2 evolution performance.