Dynamic template-driven formation of NiS/CdS nanoparticles via metal organic frameworks for efficient hydrogen evolution. (15th February 2022)

• Record Type: Journal Article
• Authors: Su, Lei; Wang, Junwen; Song, Tao; Tu, Weixia
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 14(2022)
• Page Start: 8776
• Page End: 8785
• Publication Date: 2022-02-15
• Subjects: Photocatalyst -- Metal organic framework -- Dynamic template -- Organic ligand -- Metal sulfide; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.12.234
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Metal organic frameworks (MOFs) with different organic ligands are used as precursors for the formation of photocatalysts and their effects on photocatalytic performance are investigated. NiS/CdS composites are synthesized through a facile one-step vulcanization process from Ni-MOF and cadmium salt precursors. Photocatalytic activity of the Ni-MOF-derived NiS/CdS composite is improved significantly comparing with those of CdS, Ni-MOF/CdS and normal NiS/CdS catalysts for hydrogen production from water. The NiS/CdS composite derived from Ni-MOF using terephthalic acid as ligand shows the higher activity than the cases with other ligands. The organic ligand type and electronegativity of Ni-MOF provide uniquely spatial configuration and dynamic action sites for Cd precursor and CdS. The intermediate state between Ni-MOF and CdS helps to tune the formation of NiS/CdS composite and their optical properties including conduction band position. This dynamic template-driven method provides a new way for other photocatalysts with uniform nanoparticles and distinctive heterostructures favoring the enhancement of photocatalytic activity. Graphical abstract: Image 1 Highlights: The NiS/CdS composite from dynamic template of Ni-MOFs and cadmium salt precursor. Effect of Ni-MOFs with different ligands on photocatalytic activity of NiS/CdS. The NiS/CdS photocatalyst from Ni(TPA)-MOFs exhibits superior activity for H2 . The electronegativity and compact spatial configuration of Ni-MOFs are essential. The dynamic template of Ni-MOFs configuration tunes heterojunctions of NiS/CdS composites.