Boosting photocatalytic performance of CdxZn1–xS for H2 production by Mo2C MXene with large interlayer distance. Issue 11 (27th February 2023)

• Record Type: Journal Article
• Authors: Jin, Sen; Wu, Jiabin; Jiang, Jizhou; Wang, Ruige; Zhou, Bingxin; Wang, Libo; Hu, Qianku; Zhou, Aiguo
• Is Part Of: Journal of materials chemistry. Volume 11:Issue 11(2023)
• Page Start: 5851
• Page End: 5863
• Publication Date: 2023-02-27
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d3ta00435j
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Cd x Zn1− x S solid solution grow up on the surface of Mo2 C MXene with in situ intercalation of CTA + . Abstract : Here we report a novel heterostructure with ultrahigh photocatalytic performance for H2 production. The heterostructure consists of Cd x Zn1− x S solid solution and two dimensional Mo2 C MXene. The Mo2 C MXene works as a co-catalyst, which was made from Mo2 Ga2 C by etching in cetyltrimethylammonium bromide (CTAB) solution at 160 °C for 24 h. Different from the MXene made by the general method of fluoric acid etching, the Mo2 C MXene made by this method had ultra large interlayer space (lattice parameter c = 24.5 Å) due to the in situ intercalation of CTA + . Thereafter, the Mo2 C MXene without a delamination process was used as the substrate to grow Cd0.8 Zn0.2 S (CZS) at room temperature, followed by heating in a hydrothermal process to achieve the phase conversion of CZS from sphalerite to wurtzite. The CZS/Mo2 C photocatalyst (mass ratio of Mo2 C : CZS = 0.2 : 1) achieves an ultrahigh photocatalytic H2 production activity of 44.19 mmol g −1 h −1, surpassing pure CZS by a satisfying factor of ≈2289%. It is higher than that of other MXene-co-catalysts and other noble-metal-free CSZ-based photocatalysts reported to date.