Enhanced sensing performance of Au-decorated TiO2 nanospheres with hollow structure for formaldehyde detection at room temperature

UV-Enhanced Formaldehyde Sensor Using Hollow In2O3@TiO2 Double-Layer Nanospheres at Room Temperature

“…Therefore, the as-obtained sensors show better selectivity to formaldehyde. − It should be noted here that the sensor still has a slight response to these possible interferents. Therefore, the selectivity of the sensor will be examined and further improved upon in the near future, possibly through incorporating the sensing materials by noble metals such as Au, Pd, and Pt, as reported in the literature. − …”

SrTiO3–TiO2 Heterostructured Nanotube Arrays for Ultrafast Ethanol Sensing

“…Conventional semiconducting metal oxides such as TiO 2 , − In 2 O 3 , , CO 3 O 4 , CuO, Fe 2 O 3 , In 2 O 3 , SnO 2 , , and WO 3 , , have widely been used for the detection of volatile organic compounds (VOCs). The fascinating physical and chemical properties such as stability, large band gap, high surface-to-volume ratio, the possibility of synthesizing different nanoforms, biodegradability, nontoxicity, and low cost of TiO 2 among other metal oxides make it the most promising gas/VOC sensing material. , Many researchers introduced a variety of TiO 2 morphologies including one-dimensional (1D), , two-dimensional (2D), and three-dimensional (3D).…”

“…3,4,9 1D nanomaterials, mainly TiO 2 nanotubes, have been reported as potential gas sensing materials ,, due to their extremely high effective surface area. However, their limited time stability, high working temperature (200–400 °C), and high reactivity to the traces of moisture inhibit the sensing characteristics. , …”

“…1,14 Many researchers introduced a variety of TiO 2 morphologies including one-dimensional (1D), 1,15 two-dimensional (2D), 9 and three-dimensional (3D). 3,4,9 1D nanomaterials, mainly TiO 2 nanotubes, have been reported as potential gas sensing materials 1,15,16 due to their extremely high effective surface area. However, their limited time stability, high working temperature (200−400 °C), and high reactivity to the traces of moisture inhibit the sensing characteristics.…”

“…However, their limited time stability, high working temperature (200−400 °C), and high reactivity to the traces of moisture inhibit the sensing characteristics. 3,17 Perovskite semiconductor oxides (ABO 3 ) are the potential gas sensing materials for long-term sensing performance because of their stability in thermal and chemical atmospheres, high reaction temperature, structural and chemical stabilities, and superior reliability. 4,9,17−20 Tuning of B-site cations (Al, Co, and Ti) in nanostructured perovskites can improve the VOC sensing properties by modulating the electronic and catalytic properties.…”