Effect of terbium doping on structural, optical and gas sensing properties of In2O3 nanoparticles

Ag-Modified In2O3 Nanoparticles for Highly Sensitive and Selective Ethanol Alarming

“…On the other side, when Ag is deposited on the surface of In 2 O 3 , there would be more oxygen adsorbed on the surface due to the well-known spillover effect [ 18 , 23 , 25 ], as shown in Figure 8 c. This way, Ag modification enhances the reaction between ethanol molecules and adsorbed oxygen ions on the surface of In 2 O 3 , leading to a higher response to ethanol. Meanwhile, the more ion-adsorbed oxygen will change the energy-band structure and give rise to the potential barrier as demonstrated in Figure 8 d. Therefore, the enhanced reaction with ethanol and the higher electron potential barrier will contributed to the enhance ethanol response of the Ag-modified In 2 O 3 materials.…”

“…Commonly, the sensing properties of In 2 O 3 are tailored by morphology control, structure modification, and decoration with metal oxides to for heterojunction [ 12 , 13 , 14 , 15 , 16 ], as well as modified with noble metals [ 17 , 18 ] in the matrix surface area. For example, hierarchical In 2 O 3 microbundles and flowers were prepared, showing a response of 11–14 to 50 ppm ethanol [ 12 , 15 ].…”

“…For example, hierarchical In 2 O 3 microbundles and flowers were prepared, showing a response of 11–14 to 50 ppm ethanol [ 12 , 15 ]. Anand [ 18 ] utilized Tb to dope In 2 O 3 nanorods, which showed a high response of 40 to 50 ppm ethanol. Meanwhile, noble metals are commonly used as surface modifiers to enhance the response of MOX sensors.…”

A General Solution to Mitigate Water Poisoning of Oxide Chemiresistors: Bilayer Sensors with Tb4O7 Overlayer

“…[ 21–28 ] On the other hand, the additives of Tb, Pr, and CeO 2 with moderate catalytic activity are known to increase sensor resistance excessively, while being able to maintain gas selectivity. [ 18–20,29–31 ] The former set of additives impedes the tailored design of selective gas sensors and the latter hampers the facile measurement of sensor resistance using a cost‐effective electric circuit. Furthermore, the role of each additive is not general, but varies depending on the sensing material.…”

Synthesis, characterization and study of band gap variations of vanadium doped indium oxide nanoparticles

“…So in order to obtain suitable properties, doping with different elements like Mo [11], Cr [18], Zr [19], B [20], Sn [21], Ti [22], Nb [23], Tb [24] and … were investigated.…”