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. Author manuscript; available in PMC: 2013 Apr 7.
Published in final edited form as: J Phys Chem C Nanomater Interfaces. 2012 Jul 5;116(26):14108–14114. doi: 10.1021/jp300725s

Table 1.

Summary of ceria synthesis and analysis from open literature

Precursor/Method of Synthesis/Oxidizer Particle Size, nm Band Gap, (eV) Comments ref
Ce(III)/Micro emulsion/TMAOH
Heptane and dodecane solvents		 5 – 10 2.92

  1. support QC but no size dependence was reported

  2. attribute the effects observed to Ce3+ and some unknown physicochemical aspects

 15
Ce(III) / Composite hydroxide mediated approach/ powders suspended in ethanol varies with time and temperature 3 – 7 blue shift with decrease in size

  1. do not make any comment about confinement effects

 19
Ce(III)/ Sonochemical/ TAAOH/Azocarbonamide 3 – 5 3.68 – 3.0

  1. support QC

  2. variation in particle size is attributed to the alkyl chain length in TAAOH

 20
Ce(III)/ homogeneous precipitation/ Alcohol + water/ NaOH varies with the amount of alcohol 4 – 9 no comments

  1. attribute the variation in the particle size to dielectric properties of the solvent

  2. no comments on QC

 21
Ce(III)/ hydrothermal/ size fractionation/ Alcohol + surfactant varies with surfactant 2 – 3 3.18 – 2.83

  1. support QC

  2. propose the possible contribution of Ce3+

  3. increase in Ce3+ with decrease in particle size

 22
Ce(III)/ Successive microemulsion 2 – 3 4.2 – 3.6

  1. deny the QC

  2. possible contribution of Ce3+

  3. propose that the charge transfer is direct

 7
Ce(III)/NH4OH/particles dispersed in alcohol 2.6 and 4.1 3.44 and 3.38

  1. band gap variation is negligible

  2. deny the QC

  3. propose the charge transfer to be both direct and indirect

 16
Ce(III) nitrate/ hexamethyl tetramine 3 – 12 blue shift with decrease in particle size

  1. support QC

  2. no consideration of chemistry

  3. lattice expansion due to Ce3+ but do not consider the same in case of UV-Vis analysis

 23