Low-temperature synthesis and characterization of (Zn,Ni)TiO3 ceramics by a modified sol–gel route

Photocatalytic NOx abatement by calcium aluminate cements modified with TiO2: Improved NO2 conversion

“…The heat evolved during the CAC hydration [24] favoured this hydrothermal system that likely led to the interaction. In this line, several works had reported the obtaining of iron titanates (namely pseudobrookite and ilmenite) by means of low temperature hydrothermal and sol-gel methods [25][26][27].…”

Synthesis and characterization of (Zn, Mn)TiO3 by modified sol–gel route

“…5(a)) [16]. The dielectric constant of (Zn, Mn)TiO 3 at measured frequency was relatively high as compared with (Zn, Ni)TiO 3 and (Zn, Co)TiO 3 [19,21]. This might be due to the valency transformation of manganese.…”

“…1(a and b)), there existed two exothermic peaks with continuous weight loss. The complicated process involved dehydration of the bonded water, removal of excess organic substances, and the evolution of citrates to consequent products [9,[19][20][21]. …”

“…Therefore, many efforts have been made to prepare ZnTiO 3 with improved stability [9,[12][13][14][15]. In previous work, divalent cations, such as Mg 2+ , Sr 2+ , Co 2+ , Ni 2+ , (Co 1/2 Ni 1/2 ) 2+ , etc., were introduced to ZnTiO 3 and their thermal stability were much better than that of ZnTiO 3 [2,[15][16][17][18][19][20][21]. It is known that ZnTiO 3 and MnTiO 3 are the same crystal structure of rhombohedral symmetry with a space group of R − 3 , and both of them have close size of ionic radii (0.740 and 0.67Å for Zn 2+ and Mn 2+ , respectively).…”

CeO2/NiTiO3nanocomposites; synthesis, photoluminescence and magnetic behavior

“…Zn-doped NiFe 2 O 4 [12], NiMoO 4 [13], Ni x Mn 3−x O 4 [14], Ni x Zn 1−x Fe 2 O 4 [15], Ni 1−x Co x Fe 2 O 4 [16] are some examples of the mentioned materials where A site is occupied by Ni cations. Among them, nickel titanate has been investigated as a tribological coating to reduce friction and wear at high temperature [17][18][19][20].…”