Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Facile synthesis of CuS/MXene nanocomposites for efficient photocatalytic hydrogen generation
Ist Teil von
CrystEngComm, 2020-03, Vol.22 (11), p.26-266
Ort / Verlag
Cambridge: Royal Society of Chemistry
Erscheinungsjahr
2020
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
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 Ti
3
C
2
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 H
2
generation under the illumination of simulated sunlight. The CuS-deposited few-layered MXene demonstrates the highest photocatalytic activity among all the samples. The H
2
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.
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.