Journal
MATERIALS LETTERS
Volume 189, Issue -, Pages 42-45Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2016.11.046
Keywords
Gas sensor; 2D materials; Hybrid film; Molybdenum disulfide; Formaldehyde
Funding
- National Natural Science Foundation of China [61401251, 51672154]
- State Key Laboratory of Low-Dimensional Quantum Physics [KF201517]
- Natural Science Foundation of Jiangsu Province [BK20160328]
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A hybrid film composed of reduced graphene oxide (rGO) and molybdenum disulfide (MoS2) nanosheet-assemblies has been fabricated for high-performance formaldehyde (HCHO) detection, by a simple layer-by-layer self-assembly (LBL SA) method. The rGO/MoS2 hybrid films not only show improved sensitivity to HCHO at room temperature compared to solely rGO or MoS2 films, but also exhibit fast response characteristics and good reproducibility. The synergetic effects of rGO and MoS2 on HCHO sensing enhancement of the hybrid films are attributed to the energy level matching among rGO, MoS2 and HCHO, which lead to a two-stepped efficient electron transfer from HCHO to rGO.
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