Polyoxo-titanium clusters dually functionalized ZnIn2S4/MIL-101 catalyst for photocatalysis of aquatic hydrogen production. (6th November 2020)

• Record Type: Journal Article
• Authors: Chang, Hui; Wu, Hao; Yang, Yuting; Xie, Landie; Fan, Wenjuan; Zou, Min; Ma, Guangqiang; Jiang, Zhiqiang; Zhang, Yun
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 55(2020)
• Page Start: 30571
• Page End: 30582
• Publication Date: 2020-11-06
• Subjects: ZIS -- La-ZIS -- Polyoxo-titanium clusters -- Dual functionalization -- Photocatalysis; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.08.115
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Herein, we have extended a reasonable strategy to design and prepare a series of photocatalysts ZIS/MIL-101/PTCs (ZIS = ZnIn2 S4, MIL = Materials of Institute Lavoisier, PTCs = Polyoxo-titanium clusters) with evidently enhanced photocatalytic activity for H2 evolution. The synthesis of all photocatalysts was carried out by traditional step-by-step in situ reaction method without special treatment. As expected, the photocatalytic H2 production rates by the three PTCs hybrid catalysts (ZIS/MIL-101/PTCs), namely ZIS/MIL-101/PTC-3, ZIS/MIL-101/PTC-7 and ZIS/MIL-101/PTC-9, were approximately 4, 7 and 12 times higher than that of ZIS/MIL-101, respectively. The results of UV–Vis diffuse reflectance spectroscopy and photoelectric responses show the reasons for boosting photocatalytic activity are that introduction of PTCs can well match energy gap and accelerate the photogenerated charge carriers transfer. This dual functionalization of PTCs can also be further confirmed by the photocatalytic activities of three La-ZIS/MIL-101/PTCs (La-ZIS/MIL-101/PTC-3, La-ZIS/MIL-101/PTC-7 and La-ZIS/MIL-101/PTC-9) photocatalysts doped with the La element. Graphical abstract: In the work, the dual functionality strategy of PTCs which simultaneously responds more appropriate visible light and accelerates photogenerated charge transfer was first used to design and prepare efficient photocatalysts without noble metal as cocatalyst. Image 1 Highlights: A series of intentional PTCs hybrid catalysts boosted photocatalytic activity. The dual functionality strategy of PTCs was firstly used to design photocatalysts. The PTCs is benefit to respond visible light and accelerate charge transfer. The mechanism of photocatalytic reaction has been deeply studied in detail.