Can the Production of 2D Crystals be Driven by Differential Temperature? Research with MoS₂ as An Example

Numerous ingenious top-down methods have opened a new door to the extensive research of 2D crystals. In this paper, a novel "differential-temperature exfoliation technology" is proposed to synthesize 2D few-layer MoS2. Several characterizations are conducted for discussion. The spectroscopic, optical, and purification capacity of the as-exfoliated layered structures is further studied systematically. This research provides insights into the novel top-down production and the related potential for environmental protection of few-layer MoS2.