LnFeO3 (Ln La, Nd, Sm) derived from bimetallic organic frameworks for gas sensor

Ag-Modified Porous Perovskite-Type LaFeO3 for Efficient Ethanol Detection

“…The La 3d spectrum indicated that the lanthanide ion was in the La 3+ valence state [ 10 , 11 , 29 ]. Further, in the high-resolution Fe 2p spectra ( Figure 4 c), peaks at 711.4 and 724.9 eV of binding energy could be attached to 2p 3/2 and 2p 1/2 of Fe 4+ , respectively, while the 709.6 eV and 722.8 eV peaks could be ascribed to 2p 3/2 and 2p 1/2 of Fe 3+ [ 10 , 12 , 13 ]. The Ag element ( Figure 4 d) appeared at binding energies of 367.3 eV and 373.3 eV, respectively, corresponding to the Ag 3d 5/2 and Ag 3d 3/2 double peaks of Ag 2 O [ 35 , 36 , 37 , 38 ].…”

“…Its positive crystal structure and physical–chemical properties tend to give superior gas reactivity and stability, which offer huge potential for the detection of VOCs [ 9 , 10 ]. As a classical ABO 3 material, LaFeO 3 has superior p-type electron conductivity, outstanding oxygen ion mobility and catalytic activity rendering it a suitable candidate for gas-sensing applications [ 11 , 12 , 13 , 14 ]. However, it still has a few difficulties to overcome in order to suit practical requirements, such as a poor gas sensitivity and higher operating temperatures.…”

Enhanced acetone gas sensing performance of ZnO polyhedrons decorated with LaFeO3 nanoparticles

“…LaFeO 3 , a typical ABO 3 -type perovskite-structured material [24], is widely used in photocatalysis [25,26], supercapacitors, and especially in gas sensors [27,28]. LaFeO 3 has good electrical conductivity and structural stability, and has redox properties over a wide temperature range [29,30].…”

Role of Er doping on isoamyl alcohol sensing performance of LaFeO3 microspheres and its prospects in wheat mildew detection

“…Zhang et al prepared hexagonal LaFeO 3 , circular NdFeO 3 , and hexagonal star SmFeO 3 through co-precipitation by changing the types of lanthanide metal nitrates in the same reaction system, among which LaFeO 3 exhibited the highest sensitivity for n-propanol. 26 Besides, the role of Sm and Ce incorporation on the morphology was investigated. Swatsitang et al synthesized Sm-doped LaFeO 3 nanopowders by sol–gel, and the crystallite sizes and energy band gap of samples decreased (57.81 nm to 19.84 nm and 2.218 eV to 1.880 eV) with the atom ratio of Sm to Fe increasing from 0 to 30%.…”