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4. Conclusion
Novel Cu2S–MoS2(x : y) nanocomposites with different ratios of
Cu2S (x) and MoS2 (y) are synthesized successfully by a one-step
hydrothermal method with the assistance of the ionic liquid
[BMIM]SCN. The results show that the ratio of x : y has an
obvious influence on the specific surface area as well as the
photocatalytic performance of the Cu2S–MoS2 nanocomposites.
The formation mechanism of Cu2S–MoS2 nanocomposites is
investigated by time-dependent experiments during the synthesis
of Cu2S–MoS2(1 : 1). It could be deduced that the ionic liquid (IL)
plays an important role in the formation of [BMIM]2Mo4O13
intermediates, which could interact with H2S on their surfaces to
form MoS2 crystal nuclei. Among the composites, Cu2S–MoS2(1 : 1)
exhibits the most outstanding photocatalytic activity and reu-
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Conflicts of interest
There are no conflicts to declare.
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This work is supported by the National Natural Science Foundation
of China (21373120 and 21071086) and 111 Project (B12015).
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