Synthesis and characteristics of NiO nanowire by a solution method

Microwave-enhanced catalytic degradation of 4-chlorophenol over nickel oxides under low temperature

“…400 cm −1 . The main IR absorption maximum of NiO lies between 390 and 403 cm −1 [31]. According to the results of IR and combined with the analysis of XRD, we further confirm the purity of nickel oxide.…”

Propene oligomerization to high-quality liquid fuels over Ni/HZSM-5

“…3. In the spectrum, the HZSM-5 has only one absorption band at about 300 nm, with the increasing of the Ni content, the absorption band becomes wide and shifts to about 320 nm, which has been ascribed to the band gap absorption in NiO [21]. Besides, two bands at 750 and 425 nm belonging to Ni 2+ in octahedral or distorted octahedral coordination are observed for the 2.21, 3.58 and 5.05 wt.% Ni/HZSM-5 samples.…”

Effect of synthesis conditions on the performance of weakly agglomerated nanocrystalline NiO

“…Table 1 indicates that at a constant concentration of Ni 2+ , with increasing the urea concentration, the average crystalline size slightly decreases and then increases. However, at a constant concentration of urea, compared with the molar ratios of 16 Fig. 4 shows the TEM micrograph of the as-synthesized precursor (prepared from the solutions of the molar ratios [Urea]/[Ni 2+ ] = 32).…”

“…Many methods have been used to synthesize NiO nanoparticles [13], nanorods [14], nanoribbons [15] and nanowire [16]. To acquire better applications about NiO, the synthesis conditions must be well controlled to obtain ultra fine powders with a narrow particle size distribution that enhance the performance of materials.…”