In situ growth of CdS nanoparticles on UiO-66 metal-organic framework octahedrons for enhanced photocatalytic hydrogen production under visible light irradiation

• Published in: Applied surface science Vol. 346; pp. 278 - 283
• Main Authors: Zhou, Jian-Jian, Wang, Rong, Liu, Xin-Ling, Peng, Fu-Min, Li, Chuan-Hao, Teng, Fei, Yuan, Yu-Peng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.08.2015
• Subjects: CdS; Hydrogen production; Light irradiation; Metal-organic frameworks; Metalorganic compounds; Nanoparticles; Octahedrons; Optimization; Photocatalysis; Photocatalysts; Water splitting; Water splitting; CdS; Metal-organic frameworks; Photocatalysis
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2015.03.210

Enhanced photocatalytic hydrogen generation was achieved though constructing the CdS/UiO-66 MOF hybrids. In addition, the resultant hybrids show excellent photostability for hydrogen generation. •CdS nanoparticles were hydrothermally grown on UiO-66 octahedrons.•The resultant CdS/UiO-66 hybrids show enhanced photocatalytic H2 generation under visible light irradiation.•CdS/UiO-66 hybrids possess excellent photostability for long-term hydrogen generation. CdS nanoparticles acting as photosensitizer was grown in situ upon UiO-66 metal-organic framework octahedrons through a hydrothermal process. The resultant CdS/UiO-66 hybrid photocatalysts show remarkably active hydrogen evolution under visible light irradiation as compared to CdS and UiO-66 alone. The optimum hybrid with 16wt% CdS loading shows a hydrogen production rate of 235μmolh−1, corresponding to 1.2% quantum efficiency at 420nm. The improved photocatalytic hydrogen production over hybrid CdS/UiO-66 is ascribed to the efficient interfacial charge transfer from CdS to UiO-66, which effectively suppresses the recombination of photogenerated electron-hole pairs and thereby enhancing the photocatalytic efficiency.