Binary V–Mo sulfides grown on CNTs with morphological and electronic modulation for enhanced hydrogen evolution. Issue 38 (13th September 2021)

• Record Type: Journal Article
• Authors: Ren, Xianpei; Wei, Qingbo; Wu, Fei; Wang, Yonghua; Li, Qiang
• Is Part Of: CrystEngComm. Volume 23:Issue 38(2021)
• Page Start: 6668
• Page End: 6674
• Publication Date: 2021-09-13
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d1ce00938a
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Binary V–Mo sulfides on carbon nanotubes with superior electrocatalytic water splitting performance in acid media are successfully synthesized by a facile one-step sintering method. Abstract : Transition metal sulfides, such as molybdenum sulfide and vanadium sulfide, have recently attracted substantial attention due to their potential application to the catalysis of the hydrogen evolution reaction (HER). Alloying is one of the powerful methods to exceed the intrinsic properties of pure metals. In this study, we report a simple one-step sintering method to synthesize MoS2, V1.5 S2 and V–Mo–S alloys on carbon nanotubes (CNT/VMoS). Due to its compositional, morphological and electrical superiorities, the CNT/VMoS-2 catalyst recorded the optimal HER activity with a low overpotential of −146 mV at 10 mA cm −2, a low Tafel slope of 61 mV dec −1 and a very small R ct value of 8.8 Ω, which were superior to CNT/MoS2, CNT/V1.5 S2 and other CNT/VMoS catalysts in acidic media, holding a great promise for practical water-splitting applications. We believe that the present work could broaden our horizon about the preparation of other transition metal sulfide alloys and provide a platform to understand the fundamental catalytic mechanism for improving HER performance.