Journal of Nanomaterials / 2015 / Article / Tab 3

Research Article

Crystallizing Vanadium Pentoxide Nanostructures in the Solid-State Using Modified Block Copolymer and Chitosan Complexes

Table 3

Optical transition energy for V2O5 from several morphologies and preparation methods.

FormBand gap (eV)MethodCommentsReference

Macroplates3.4V2O5 in a water/ethanol mediaMacroplates of 10-11 μ length by 5-6 μ [19]
Nanosheets2.25Surfactant sol-gelCrystal size 52 nm[91]
Nanoribbon2.3Magnetron sputteringThin thickness 34–70 nm[1]
Nanoparticles2.85VOCl3/PEGParticle size 25–30 nm [79]
Nanoparticles2.93NH4VO3/microemulsionParticle size 5–8 nm[92]
Flower-like2.3Hydrothermal[70]
Nanorods2.30–2.60Magnetron sputteringAnnealed at 500°C[68]
Film2.51–2.53Pulsed laser depositedThin thickness 28–22 nm[71, 93]
Film2.21–2.22Magnetron sputteringThin thickness 35–70 nm[94]
Film2.12–2.47Pulsed laser depositionThin thickness 300 nm[67]
Film2.42–2.49Sol-gelThin thickness 0.22–0.34 nm[69]
Film2.50–2.66EvaporationThin thickness 17 nm[70]
Film1.50–3.00Plasma, CVDThin thickness 75–138 nm [71]
Film2.30–2.50Spray pyrolysisThin thickness 30–55 nm[72]
Film2.29–2.34Physical VDThin thickness 45, 74, and 164 nm[73]
Film2.24SputteringV2O5 target on SnO2: Thin thickness 35–160 nm[74]
Film2.2Thermally evaporatedThin thickness 50–215 nm[75]
Film2.03–2.62Thermal evaporation and Annealing at 350°CLithium intercalation [76]
Film2.25–2.37RF sputteringTarget in O2 [77]
Layered nanosheets(a)2.34Solid-state pyrolysisThis work
Layered nanosheets(b)2.4Solid-state pyrolysis
Larger crystals with layered structure(c)2.4Solid-state pyrolysis
nanoparticles(d)2.34Solid-state pyrolysisAverage size 16 nm

Product from precursor PS-co-4-PVP·(VCl3) 1 : 1. (b)Product from precursor chitosan·(VCl3) 1 : 1. (c)Product from precursor PS-co-4-PVP·(VCl3) 1 : 5. (d)Product from precursor chitosan·(VCl3) 1 : 5.