Bimetallic metal–organic frameworks-derived mesoporous CdxZn1−xS polyhedrons for enhanced photocatalytic hydrogen evolution. Issue 10 (12th March 2019)

• Record Type: Journal Article
• Authors: Mu, Feihu; Zhou, Shijian; Wang, Yun; Wang, Jian; Kong, Yan
• Is Part Of: Journal of materials research. Volume 34:Issue 10(2019)
• Page Start: 1773
• Page End: 1784
• Publication Date: 2019-03-12
• Subjects: metal–organic frameworks, -- sulfidation, -- mesoporous CdxZn1−xS polyhedrons, -- photocatalysis, -- hydrogen evolution; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2019.72
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: Abstract : A bimetallic metal–organic frameworks (MOFs)-templated strategy was developed to fabricate mesoporous Cd x Zn1− x S polyhedrons with improved photocatalytic hydrogen evolution activity, and the formation mechanism of these mesoporous polyhedrons was discussed in detail. Incorporating Cd atoms, the Brunauer–Emmett–Teller surface areas of mesoporous Cd x Zn1− x S polyhedrons were significantly increased (271 m 2 /g), providing more exposed active sites compared with ZnS. In addition, suitable conduction band potential (< −0.55 eV) of the mesoporous Cd x Zn1− x S polyhedrons was also beneficial for the photocatalysis. Impressively, by the co-effects of mesoporous structure and modified conduction band, the mesoporous Cd x Zn1− x S polyhedrons exhibited better photocatalytic activity for hydrogen evolution than most reported photocatalysts without noble metals. The maximum hydrogen evolution rate of the CSZ3 reached 4.10 mmol/(h g) under visible-light irradiation and without any cocatalyst condition. This facile strategy for the construction of mesoporous Cd x Zn1− x S polyhedrons provided a deep insight to fabricate other metal sulfides for a variety of photochemical applications.