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Facile microwave-assisted synthesis and controllable architecture of three-dimensional nickel titanate

“…Some reports proved that the presence of impurities could be inhibited by increasing the calcination temperature from 600 to beyond 1000 °C. 5,10,11 However, the opposite behaviour was observed in several studies where increasing post-treated temperature strongly facilitated the transformation into rutile or brookite from unreacted anatase. 4,6 Ni et al successfully prepared highly pure microtube-shaped NiTiO 3 via a simple solution-combustion method using a spirit lamp with an absorbent cotton lampwick, followed by firing with a match.…”

“…2,3 NTN nanomaterials have been prepared by several methods including a modified Pechini process, sol-gel, coprecipitation, flux growth, hydrothermal treatment, combustion, sol-precipitation, electrospinning, solid-state ceramic, pyrolysis of polymeric precursors, and wet chemical synthesis (using citrate, maleate, propionic acid or stearic acid). [3][4][5][6][7][8][9][10][11][12] Similar to other perovskite-like compounds, NTN is extensively employed in ceramics and cool pigments as well as in solid lubricants (as a tribological coating to reduce friction and wear in high temperature applications). [4][5][6] NTN materials have also been utilized as semiconductor rectifiers, electrodes for solid oxide fuel cells, gas sensors, and metal-air barriers.…”

“…[3][4][5][6][7][8][9][10][11][12] Similar to other perovskite-like compounds, NTN is extensively employed in ceramics and cool pigments as well as in solid lubricants (as a tribological coating to reduce friction and wear in high temperature applications). [4][5][6] NTN materials have also been utilized as semiconductor rectifiers, electrodes for solid oxide fuel cells, gas sensors, and metal-air barriers. [13][14][15][16] In particular, due to a narrow band gap (2.1-2.2 eV) and n-type nature, NTN materials have been widely used as visible lightdriven photocatalysts.…”

“…2,3,12,[17][18][19] However, aside from complicated routes, the syntheses of NTN materials have a variety of inherent problems, such as generation of materials with large particle sizes, uncontrolled morphology, low purity, poor reproducibility and uniformity due to high sintering temperature, and heterogeneous solid phase reactions. [4][5][6][7][8][9][10][11][12] A few reports have focused on producing uniform NTN structures to overcome these obstacles. Dharmaraj et al 6 fabricated NTN nanofibers by a sol-gel process and an electrospinning technique, followed by high temperature calcination of the nickel titanate/poly(vinyl acetate) composite fibers.…”

NiTiO3 powders obtained by polymeric precursor method: Synthesis and characterization

“…It is also believed that fine powders or nanopowders reveal particular optical and electrical properties in comparison with bulk materials [13,14]. In literature, this perovskite is extensively employed as ceramic pigment [15] and solid lubricants [16].…”