Preparation, Characterization, and Mechanistic Understanding of Pd-Decorated ZnO Nanowires for Ethanol Sensing

Table 1

Selectivity factor (𝑄) of the sensors fabricated by ZnO-NWs and Pd-ZnO-NWs. (𝑄 = S _ethanol/S _other, where S _ethanol and S _other are the responses of the sensors to 200 ppm ethanol and other gases, resp.).

	Target gases
	C2H5OH	CH4	CO	CH3OH	CH3COCH3
𝑄 factor of ZnO-NWs	1	2.69	2.69	2.07	1.60
𝑄 factor of Pd-ZnO-NWs	1	2.88	3.02	1.99	1.52