Naslov
A high-performance n-butanol gas sensor based on ZnO nanoparticles synthesized by a lowtemperature solvothermal route

Autori
Liu, Xu ; Chen, Nan ; Xing, Xinxin ; Li, Yuxiu ; Xiao Xuechun ; Wang, Yude ; Đerđ, Igor

Izvornik
RSC Advances (2046-2069) 5 (2015), 67; 54372-54378

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
n- butanol ; gas sensing

Sažetak
ZnO nanoparticles with high crystallinity and several nanometers in size were synthesized by a lowtemperature solvothermal route from zinc acetate dihydrate (Zn(CH3COO)2$2H2O), potassium hydroxide (KOH) and methanol (CH3OH). The structural and the morphological characterizations of the ZnO nanoparticles were performed by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and N2-sorption isotherms. The obtained nanoparticles are highly crystalline wurtzite-type ZnO with a uniform near-spherical shape and an average particle size estimated to be 8.4
1.3 nm. Such a small particle size and slight agglomeration are attributed to the use of methanol, which acts as both a solvent and an inhibitor of growth and agglomeration. The assynthesized ZnO nanoparticles were directly used as a gas sensing material toward n-butanol gas. Such a designed sensor device exhibits several advantages such as a high and fast response, short recovery time, and good stability toward n-butanol gas. At the optimal operating temperature (320 C), its gas response toward 500 ppm n-butanol is 805 and the response and recovery times are 22 and 6 seconds, respectively.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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