Facile synthesis of CuS/MXene nanocomposites for efficient photocatalytic hydrogen generation. Issue 11 (27th February 2020)

• Record Type: Journal Article
• Authors: Xie, Yi; Rahman, Md Mushfiqure; Kareem, Shefiu; Dong, Hao; Qiao, Fen; Xiong, Wei; Liu, Xiaoqing; Li, Neng; Zhao, Xiujian
• Is Part Of: CrystEngComm. Volume 22:Issue 11(2020)
• Page Start: 2060
• Page End: 2066
• Publication Date: 2020-02-27
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d0ce00104j
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Deposition of covellite CuS nanocrystals on the multilayered MXene and few-layered MXene by a facile reaction of S 2− with Cu 2+ precursors to obtain 0D/2D nanocomposites. Abstract : In this work, we have established a facile wet-chemical procedure for depositing CuS nanocrystals (NCs) on layered MXenes with efficient photocatalytic activity. Multilayered and few-layered MXenes are respectively achieved by etching MAX in the presence of HF solution and by subsequent intercalating the as-synthesized multilayered Ti3 C2 T x with tetramethylammonium hydroxide solution (TMAOH). The CuS/MXene nanocomposites are then prepared by an in situ reaction of sulfur with copper precursors. A unique and simple ligand exchange technique is explored to convert the resulting CuS/MXene nanocomposites to the water phase in order to investigate the photocatalytic activity of the resulting samples. Compared with the pristine MXene and CuS, the CuS/MXene nanocomposite displays higher photocatalytic activity for H2 generation under the illumination of simulated sunlight. The CuS-deposited few-layered MXene demonstrates the highest photocatalytic activity among all the samples. The H2 generation rate of the CuS-deposited few-layered MXene can reach 4.245 μmol g −1 h −1, which is more than 1.42 and 1.49 times higher than that of pure CuS and MXene, respectively. This work might pave the way to a facile and general approach to modulate 0D/2D nanocomposites and heterostructures for promising applications in energy-related fields.