A hybrid zeolitic imidazolate framework-derived ZnO/ZnMoO4 heterostructure for electrochemical hydrogen production. Issue 33 (10th August 2021)

• Record Type: Journal Article
• Authors: Li, Yang; Chen, Shumei; Wu, Xin; Zhang, Huabin; Zhang, Jian
• Is Part Of: Dalton transactions. Volume 50:Issue 33(2021)
• Page Start: 11365
• Page End: 11369
• Publication Date: 2021-08-10
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt01861b
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A porous ZnO/ZnMoO4 heterostructure is prepared by a hybrid zeolitic imidazolate framework-derived oxidation method for alkaline water electrolysis. Abstract : Sustainable hydrogen fuel supply through electrochemical water splitting requires highly efficient, low-cost and robust electrocatalysts. Interface engineering is of key importance to improve the catalytic performance in a heterogeneous electrocatalytic system. Herein, a porous microcubic framework composed of a ZnO/ZnMoO4 heterostructure (ZnO@ZnMoO4 ) is prepared by a hybrid zeolitic imidazolate framework-derived oxidation method, and it shows much enhanced hydrogen evolution reaction (HER) activity in alkaline media. The overpotential (at 10 mA cm −2 ) for ZnO@ZnMoO4 is significantly reduced by 30% and 20% compared with those for virgin ZnO (v-ZnO) and polycrystalline zinc molybdenum oxide (PZMO), respectively. The enhanced electrocatalytic activity should be attributed to the ZnO/ZnMoO4 heterostructure, which can synergistically facilitate the charge transport. This work provides a more structured design strategy for electrocatalysts for future electrochemical energy conversion systems.