Fabrication of anatase/rutile hierarchical nanospheres with enhanced n/p type gas sensing performance at room temperature

Abstract

Porous Pt decorated anatase/rutile sensing nanospheres with high crystallinity and large surface area synthesized through psHT treatment present enhanced sensitivity and selectivity to VOCs vapor at room temperature.

Influence of energy band alignment in mixed crystalline TiO2nanotube arrays: good for photocatalysis, bad for electron transfer

“…Kang et al claimed that the conduction band minimum of anatase was found to be about 0.2 eV higher than that of rutile, which indicated that the electron more likely transferred from anatase to rutile [21]. (ii) Conversely, recently in the second hypothesis, some experimental as well as theoretical works proposed that both bands of rutile lie higher than of the anatase phase, so in mixed systems the holes are accumulated in the rutile, while the electrons transfer to anatase phase [22][23][24][25][26].…”

Study of the response behavior of a CdS–SnO2 thick film for high selectivity towards propanol gas

“…Selectivity is one of the most important parameters of the sensing properties of the gas sensor. The selectivity of the sensor was calculated using the following formula: 27,28 where S i is the response of gas for which the relative is to be estimated. The responses were found to be ∼45.63%, ∼33.91%, and ∼20.46% for propanol, ethanol, and acetone, respectively, which is displayed in the histogram (Fig.…”