Naslov
Polymer-assisted generation of antimony-doped SnO2 nanoparticles with high crystallinity for application in gas sensor

Autori
Wang, Yude ; Djerdj, Igor ; Antonietti, Markus ; Smarsly, Bernd

Izvornik
Small (1613-6810) 4 (2008), 10; 1656-1660

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

Ključne riječi
Sb-doped tin oxide; sol-gel processes; nanoparticles; electrical conductivity

Sažetak
This communication describes a new method to prepare ATO nanocrystalline powder with high crystallinity for sensor purposes. Based on a polymer-assisted sol-gel method and simple chemical reagents, metal and metal oxides nanoparticles have been prepared.[12] The polymer not only provides favorable site for the growth of the particulate assemblies, it also influences the formation process, including nucleation, growth, coagulation and flocculation.[13] Our approach is based on a novel amphiphilic block-copolymer (“ KLE” type, poly(ethylene-co-butylene)-block-poly(ethylene oxide))[14] and simple chemical reagents (SnCl4 and Sb(OC2H5)3). The ATO was obtained in a previously non-accessible small particle size and crystal quality. The ATO nanocrystals were then used as a sensing material of the sensors of indirect heating structure and tested for their ability to detect formaldehyde.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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