Co4N-WNx composite for efficient piezocatalytic hydrogen evolution

Jiuyang Yu, Haichuan Guo, Wenhui Feng, Xuyun Guo, Ye Zhu, Tiju Thomas, Chunjie Jiang, Siqi Liu, Minghui Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

A dual-phase transition metal nitride (TMN) based Co4N-WNx system has been fabricated using nitridation of CoWO4. The interface between centrosymmetric Co4N and non-centrosymmetric WNx promotes charge carrier separation. This system also shows piezoelectric behavior. The piezoelectric property has been proved using piezoelectric force microscopy (PFM) measurements. In addition, modulating the non-centrosymmetric structure of Co4N-WNx allows a hydrogen production rate of about 262.7 μmol g−1 h−1 in pure water. We also show that the piezocatalytic hydrogen evolution efficiency is satisfactory. Co4N-WNx can also help achieve simultaneous piezocatalytic hydrogen production and RhB degradation. This work provides a novel strategy for designing efficient piezocatalytic materials.

Original languageEnglish
JournalDalton Transactions
Volume51
DOIs
Publication statusPublished - Apr 2022

ASJC Scopus subject areas

  • Inorganic Chemistry

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