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Synthesis and gas-responsive characteristics to methanol and isopropanol of bean-sprout-like MoS2

Chao Fan,Gangzha Liu,Yonghui Zhang,Mengjun Wang

Herein novel MoS 2 bean-sprout-like nanostructures were synthesized by a facile solid-state reaction, and devices based on the as-grown products were also fabricated. SEM images show the as-grown products are porous and bean-sprout-like. Phase structures and elemental composition were detected by EDS, XRD and Raman. The results demonstrate the as-grown products are pure MoS 2 without any contaminations. Gas-responsive characteristics to two Volatile Organic Compounds (VOC) methanol and isopropanol were investigated for the first time and related gas-responsive mechanisms are proposed. The devices show gas-responsive properties to methanol and isopropanol, which reveals a new potential application of VOC gas sensors for MoS 2 .