A Metal‐Organic‐Framework‐Derived g‐C3N4/α‐Fe2O3 Hybrid for Enhanced Visible‐Light‐Driven Photocatalytic Hydrogen Evolution. Issue 9 (16th January 2019)

• Record Type: Journal Article
• Authors: Liu, Jing; Zhao, Xiuxia; Jing, Peng; Shi, Wei; Cheng, Peng
• Is Part Of: Chemistry. Volume 25:Issue 9(2019)
• Page Start: 2330
• Page End: 2336
• Publication Date: 2019-01-16
• Subjects: g-C3N4/α-Fe2O3 hybrid -- hydrogen evolution -- metal-organic frameworks -- Z-Scheme system; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201805349
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: As one of the most efficient systems for photocatalytic hydrogen evolution, the Z‐Scheme system, consisting of different semiconductors with a reversible donor–acceptor pair, has attracted great attention. Considering the non‐toxicity and low cost of photocatalysts, a series of g‐C3 N4 /α‐Fe2 O3 hybrids were rationally constructed based on the Z‐Scheme mechanism for the first time, using a metal‐organic framework template approach that can fine tune the compositions and properties of the hybrids. An optimized hybrid, g‐C3 N4 /α‐Fe2 O3 ‐2, exhibited prominent photocatalytic water splitting performance with a visible light response. Under irradiation of visible light ( λ >420 nm), the hybrid shows a high durability and superior hydrogen production rate of 2066.2 μmol g −1 h −1 from water splitting, which is approximately three times greater than that of bulk g‐C3 N4 because of the effective separation of photo‐excited charge carriers by two narrow band gap semiconductors, tightly coupled with the Z‐Scheme structural feature. Abstract : Green hybrid : A Z‐Scheme system, g‐C3 N4 /α‐Fe2 O3, was synthesized by a MOF‐derived template method. The optimized system shows excellent photocatalytic hydrogen evolution performance with visible light response.