TY  - JOUR
PY  - 2022//
TI  - Effect of Pd-sensitization on poisonous chlorine gas detection ability of TiO(2): green synthesis and low-temperature operation
JO  - Sensors (Basel)
A1  - Ekar, Satish
A1  - Nakate, Umesh T.
A1  - Khollam, Yogesh B.
A1  - Shaikh, Shoyebmohamad F.
A1  - Mane, Rajaram S.
A1  - Rana, Abu Ul Hassan S.
A1  - Palaniswami, Marimuthu
SP  - e4200
EP  - e4200
VL  - 22
IS  - 11
N2  - Ganoderma lucidum mushroom-mediated green synthesis of nanocrystalline titanium dioxide (TiO(2)) is explored via a low-temperature (≤70 °C) wet chemical method. The role of Ganoderma lucidum mushroom extract in the reaction is to release the ganoderic acid molecules that tend to bind to the Ti(4+) metal ions to form a titanium-ganoderic acid intermediate complex for obtaining TiO(2) nanocrystallites (NCs), which is quite novel, considering the recent advances in fabricated gas sensing materials. The X-ray powder diffraction, field emission scanning electron microscopy, Raman spectroscopy, and Brunauer-Emmett-Teller measurements etc., are used to characterize the crystal structure, surface morphology, and surface area of as-synthesized TiO(2) and Pd-TiO(2) sensors, respectively. The chlorine (Cl(2)) gas sensing properties are investigated from a lower range of 5 ppm to a higher range of 400 ppm. In addition to excellent response-recovery time, good selectivity, constant repeatability, as well as chemical stability, the gas sensor efficiency of the as-synthesized Pd-TiO(2) NC sensor is better (136% response at 150 °C operating temperature) than the TiO(2) NC sensor (57% at 250 °C operating temperature) measured at 100 ppm (Cl(2)) gas concentration, suggesting that the green synthesized Pd-TiO(2) sensor demonstrates efficient Cl(2) gas sensing properties at low operating temperatures over pristine ones.<p />  <p>Language: en</p>
LA  - en
SN  - 1424-8220
UR  - http://dx.doi.org/10.3390/s22114200
ID  - ref1
ER  -