Correlation between Morphology and Defect Luminescence in Precipitated ZnO Nanorod Powders

Bitenc, Marko; Podbršček, Peter; Orel, Zorica Crnjak; Cleveland, Michael A.; Paramo, J. Antonio; Peters, Raul; Strzhemechny, Yuri M.

doi:10.1021/cg8008078

Cited by 58 publications

(35 citation statements)

References 37 publications

(69 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5] Conventional uses of ZnO include varistors, piezoelectrics, sensors, photocatalysts, cosmetics and sunscreens. 6,7,8 Zinc oxide typically crystallises with the wurtzite hexagonal structure.…”

Section: Introductionmentioning

confidence: 99%

“…At OH/Zn ratios of 11-12, single hexagonal rods 1-2 um in length were produced. The authors suggested growth occurred from solutions supersaturated with respect to Zn(OH) 4 2-. 25 The occurrence of a hexagonal prismatic morphology [26][27][28][29][30][31] is generally assumed to be a consequence of surface energy effects favouring the development of {10-10} and {0001} crystal faces.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hierarchical Growth of ZnO Particles by a Hydrothermal Route

et al. 2014

View full text Add to dashboard Cite

ABSTRACT:The crystallization of ZnO microrods by hydrothermal treatment of a suspension formed from reaction of zinc acetate and sodium hydroxide has been examined using scanning and transmission electron microscopy as a function of hydrothermal reaction time. Polycrystalline hexagonal ZnO microrods first appeared after 0.5 h reaction time at 120 °C. These early stage rods were composed of stacks of hexagonal layers, each ~ 50 nm in thickness containing closely aligned assemblies of nanocrystallites < 20 nm in size. A further growth stage involving smaller pseudo-hexagonal columns nucleating and growing along <0001> from the (0001) basal layers of preformed polycrystalline hexagonal microrods was identified. For reaction times > 3h, the microrods were single crystals, as identified by TEM lattice imaging and electron diffraction, and many were in the form of double rods.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hierarchical Growth of ZnO Particles by a Hydrothermal Route

et al. 2014

View full text Add to dashboard Cite

show abstract

“…In general, the PL emission band centered in the UV region is caused by the radiative recombination of electron from conduction band with hole from the valence band. The broad PL emission band located in the visible region may be related to induced emission from some defects such as oxygen vacancies and zinc interstitials [29][30][31][32].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of transparent ZnO/PMMA nanocomposite films through free-radical copolymerization of asymmetric zinc methacrylate acetate and in-situ thermal decomposition

Zhang

Chen

et al. 2011

Journal of Luminescence

View full text Add to dashboard Cite

“…Therefore, the research activities on nanoscale ZnO synthesis and characterization have increased significantly in the last few years. Various synthetic approaches have been reported in the literature, including hydrothermal [17][18][19] and solvothermal methods [20][21][22], microemulsion [23], sol-gel method [24], and thermal decomposition of precursors [25,26]. These chemical processes are efficient methods for preparation of nanoparticles and may…”

Section: Introductionmentioning

confidence: 99%

Polyol mediated nano size zinc oxide and nanocomposites with poly(methyl methacrylate)

Anžlovar¹,

Kogej²,

Orel³

et al. 2011

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Organophilic nano ZnO particles have been synthesized in various diols (ethylene glycol -EG, 1,2 propane diol -PD, 1,4 butane diol -BD and tetra(ethylene glycol) -TEG) in the presence of p-toluenesulfonic acid, p-TsOH, as an end capping agent. The addition of p-TsOH reduces the ZnO particle size and increases its crystallite size. With increasing diol main chain length the ZnO particle size increases (EG (32 nm) < PD (33 nm) < BD (72 nm) < TEG (86 nm)). Using the assynthesized and unmodified ZnO nanocomposites with poly(methyl methacrylate), PMMA, matrix have been prepared by the in-situ bulk polymerization of methyl methacrylate, MMA. The addition of surface modifiers is avoided which is an advantage for the application since they can influence other properties of the material. ZnO particles, especially those with smaller particle sizes (EG -32 nm, PD -33 nm) showed enhanced effect on the thermal stability of PMMA, ultraviolet, UV, absorption and transparency for visible light. Transparent materials with high UV absorption and with enhanced resistance to sunlight were obtained by optimizing the nanocomposite preparation procedure using ZnO particles of about 30 nm size in concentrations between 0.05 and 0.1 wt%. The reported nanocomposite preparation procedure is compatible with the industrial process of PMMA sheet production.

show abstract

Correlation between Morphology and Defect Luminescence in Precipitated ZnO Nanorod Powders

Cited by 58 publications

References 37 publications

Hierarchical Growth of ZnO Particles by a Hydrothermal Route

Hierarchical Growth of ZnO Particles by a Hydrothermal Route

Synthesis of transparent ZnO/PMMA nanocomposite films through free-radical copolymerization of asymmetric zinc methacrylate acetate and in-situ thermal decomposition

Polyol mediated nano size zinc oxide and nanocomposites with poly(methyl methacrylate)

Contact Info

Product

Resources

About