Porous ZnO platelets via controlled thermal decomposition of zinc glycerolate

Dong, Hailong; Feldmann, Claus

doi:10.1016/j.jallcom.2011.10.004

Cited by 31 publications

(19 citation statements)

References 27 publications

(33 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ordering of decomposition from low to high temperature is Zn(O i Pr) 2 < Zn(O n Bu) 2 < Zn(OEt) 2 < Zn(OMe) 2 < Zn(OGc). High TDT of Zn(OGc) has been reported previously [ 78 ]. For complexes Zn(OMe) 2 and Zn(OGc), high TDT should be attributed to the polymeric structure of Zn(OMe) 2 and the quite stable chelated structure of Zn(OGc), respectively.…”

Section: Resultsmentioning

confidence: 71%

“…Based on these results, it is obvious to observe size-induced the weakening of diffraction peak intensity and the broadening of diffraction peaks (grain size: ZnO -EtOH > ZnO - i PrOH > ZnO -MeOH > ZnO - n BuOH ) and alkyl alcohol-induced the change of morphologies. As a special example, when high boiling-point glycerol (GcOH) was used as a reactant, the formed intermediate zinc glycerolate Zn[OCH 2 CH(OH)CH 2 O] [ 77 , 78 , 79 ] (monoclinic P2 1 / c , Powder Diffraction File Database (PDF-2), entry: JCPDS 23-1975) could not be thermally decomposed at 240 °C for 2 h under an identical condition to yield crystalline ZnO -GcOH NPs. However, ZnO -GcOH NPs can be prepared at 320 °C for 2 h in the presence of oleic acid and 1-octadecene.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Organozinc Precursor-Derived Crystalline ZnO Nanoparticles: Synthesis, Characterization and Their Spectroscopic Properties

et al. 2018

View full text Add to dashboard Cite

Crystalline ZnO-ROH and ZnO-OR (R = Me, Et, iPr, nBu) nanoparticles (NPs) have been successfully synthesized by the thermal decomposition of in-situ-formed organozinc complexes Zn(OR)2 deriving from the reaction of Zn[N(SiMe3)2]2 with ROH and of the freshly prepared Zn(OR)2 under an identical condition, respectively. With increasing carbon chain length of alkyl alcohol, the thermal decomposition temperature and dispersibility of in-situ-formed intermediate zinc alkoxides in oleylamine markedly influenced the particle sizes of ZnO-ROH and its shape (sphere, plate-like aggregations), while a strong diffraction peak-broadening effect is observed with decreasing particle size. For ZnO-OR NPs, different particle sizes and various morphologies (hollow sphere or cuboid-like rod, solid sphere) are also observed. As a comparison, the calcination of the fresh-prepared Zn(OR)2 generated ZnO-R NPs possessing the particle sizes of 5.4~34.1 nm. All crystalline ZnO nanoparticles are characterized using X-ray diffraction analysis, electron microscopy and solid-state 1H and 13C nuclear magnetic resonance (NMR) spectroscopy. The size effect caused by confinement of electrons’ movement and the defect centres caused by unpaired electrons on oxygen vacancies or ionized impurity heteroatoms in the crystal lattices are monitored by UV-visible spectroscopy, electron paramagnetic resonance (EPR) and photoluminescent (PL) spectroscopy, respectively. Based on the types of defects determined by EPR signals and correspondingly defect-induced probably appeared PL peak position compared to actual obtained PL spectra, we find that it is difficult to establish a direct relationship between defect types and PL peak position, revealing the complication of the formation of defect types and photoluminescence properties.

show abstract

Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Organozinc Precursor-Derived Crystalline ZnO Nanoparticles: Synthesis, Characterization and Their Spectroscopic Properties

et al. 2018

View full text Add to dashboard Cite

show abstract

“…are used as catalytic systems 1,2 or as precursors to obtain nanoparticles, including iron oxide magnetic nanoparticles (MNPs), 3 and nanostructure materials for technical and biomedical applications. 4–8…”

mentioning

confidence: 99%

Individual iron(iii) glycerolate: synthesis and characterisation

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Zinc acetate dihydrate (CH 3 COO) 2 ZnÁ2H 2 O and freshly distilled glycerol (analytical grade) were used as the starting materials for the synthesis of zinc glycerolate ZnC 3 H 6 O 3 . The ZnGly precursor was prepared via a polyol-mediated synthesis based on Dong's work [27]. Typically, 2.0 g (CH 3 COO) 2-ZnÁ2H 2 O and 1 ml of distilled water were added to 50 mL of glycerol in a 100-mL round-bottom flask.…”

Section: Experimental Materials Preparationmentioning

confidence: 99%

Novel synthesis and electrochemical investigations of ZnO/C composites for lithium-ion batteries

et al. 2021

View full text Add to dashboard Cite

For the first time, ZnO/C composites were synthesized using zinc glycerolate as a precursor through one-step calcination under a nitrogen atmosphere. The effect of the heat treatment conditions on the structure, composition, morphology as well as on the electrochemical properties regarding application in lithium-ion batteries are investigated. The products obtained by calcination of the precursor in nitrogen at 400—800 °C consist of zinc oxide nanoparticles and amorphous carbon that is in-situ generated from organic components of the glycerolate precursor. When used as anode material for lithium-ion batteries, the as-prepared ZnO/C composite synthesized at a calcination temperature of 700 °C delivers initial discharge and charge capacities of 1061 and 671 mAh g−1 at a current rate of 100 mA g−1 and hence 1.5 times more than bare ZnO, which reaches only 749/439 mAh g−1. The native carbon improves the conductivity, allowing efficient electronic conductivity and Li-ion diffusion. By means of ex-situ XRD studies a two-step storage mechanism is proven.

show abstract

Porous ZnO platelets via controlled thermal decomposition of zinc glycerolate

Cited by 31 publications

References 27 publications

Organozinc Precursor-Derived Crystalline ZnO Nanoparticles: Synthesis, Characterization and Their Spectroscopic Properties

Organozinc Precursor-Derived Crystalline ZnO Nanoparticles: Synthesis, Characterization and Their Spectroscopic Properties

Individual iron(iii) glycerolate: synthesis and characterisation

Novel synthesis and electrochemical investigations of ZnO/C composites for lithium-ion batteries

Contact Info

Product

Resources

About