Hydrothermally grown porous FeVO₄nanorods and their integration as active material in gas-sensing devices

Synthesis of platinum-decorated iron vanadate nanorods with excellent sensing performance toward n-butylamine

“…6b), respectively, which correspond to the characteristics of V 5+ , identical to previous reports (V2p peak positions of V 5+ are at 517 ± 0.1 eV and 525 ± 0.1 eV) [24,25]. [35].…”

“…In addition, from Fig. 6c, it can be observed that the O1s peak of pure FeVO 4 nanorods is located at a binding energy of 530.58 eV, whereas for Pt-decorated FeVO 4 nanorods, the O1s peak is located at a slightly higher binding energy of 530.78 eV, which resulted from the noble metal-oxide support interaction [24,25]. The high resolution O1s XPS profile of the Pt-decorated FeVO 4 nanorods contains several peaks.…”

“…Among them, iron vanadate (FeVO 4 ), an n-type semiconductor (E g = 2.0 eV) with a triclinic structure [23], has been widely studied in terms of its morphological control and applications, including nanoplatelets for gas-sensors [22][23][24], nanosheets for photocatalysis [25], and nanorods for lithium-ion batteries [24,26]. In gas-sensing applications, FeVO 4 nanostructures have previously been employed for the detection of O 2 [24], n-butanol [23], and ethanol [25]. However, to date, very few reports exist on the use of metal vanadate nanosensors for detecting organic amine vapors.…”

“…The environmental monitoring of amine vapors are of particular interest since both aliphatic and aromatic amines can induce toxicological effects to humans even at minimal concenTo date, diverse nanostructures based on transition metal vanadates have been reported, including ␤-AgVO 3 [12,13], ␣-CuV 2 O 6 [14],CuV 3 O 8 [15], Co 2 V 2 O 7 [16], ZnV 3 O 8 [17], Na 1.08 V 3 O 8 [18], MnV 2 O 6 [19], BiVO 4 [20], InVO 4 [21] and FeV 3 O 8 [22]. Among them, iron vanadate (FeVO 4 ), an n-type semiconductor (E g = 2.0 eV) with a triclinic structure [23], has been widely studied in terms of its morphological control and applications, including nanoplatelets for gas-sensors [22][23][24], nanosheets for photocatalysis [25], and nanorods for lithium-ion batteries [24,26]. In gas-sensing applications, FeVO 4 nanostructures have previously been employed for the detection of O 2 [24], n-butanol [23], and ethanol [25].…”

Fabrication of Direct Z‐scheme α‐Fe2O3/FeVO4 Nanobelts with Enhanced Photoelectrochemical Performance

“…Recently, a great number of vanadates, such as FeVO 4 ,, BiVO 4 , NdVO 4 , Cu 3 V 2 O 8 , Zn 3 V 2 O 8 and Cu 3 V 2 O 7 (OH) 2 (H 2 O) 2 etc, have been reported, because of fulfilling the basic requirements as photocatalysts for organic pollutant decomposition and water splitting under visible light irradiation. Among them, FeVO 4 , consisting of FeO 5 trigonal bipyramidal, FeO 6 octahedra and VO 4 tetrahedra, is a highly stable and selective catalyst, so it has many potential applications in photocatalytic, gas‐sensing, magnetic, electrical and dielectric fields . Generally, there exist four different polymorphs for FeVO 4 : FeVO 4 ‐I crystallize in a triclinic system, FeVO 4 ‐II and III crystallizes in orthorhombic structure, and FeVO 4 ‐IV in monoclinic phase ,.…”