Tracking the Formation of Nano-sized Zinc Oxide from Zinc Peroxide by In Situ XAS and XRD

Daley, Thomas J.; Ramos, Silvia; Cibin, Giannantonio; Dent, Andrew J.; Hyde, Timothy I.; Sankar, Gopinathan

doi:10.1088/1742-6596/430/1/012080

Cited by 6 publications

(11 citation statements)

References 9 publications

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“…A peculiar crystallographic structure of

{ZnO}_{2}

containing peroxide (O 2 ) 2− groups is responsible for its low decomposition temperature of about 200–230 °C, [ 30,31 ] which can be further affected by reducing the size of

{ZnO}_{2}

crystallites. [ 28,32 ] Upon decomposition,

{ZnO}_{2}

transforms to nanocrystalline ZnO (nano‐ZnO). It was suggested in ref.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Study of Zinc Peroxide Decomposition to Zinc Oxide by X‐Ray Absorption Spectroscopy and Reverse Monte Carlo Simulations

Kuzmin

Pudza

Klementiev

2022

Physica Status Solidi (b)

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The Zn K‐edge X‐ray absorption spectroscopy is used to investigate in situ the decomposition of zinc peroxide ( ZnO 2 ) to zinc oxide (ZnO). Principal component and linear combination analyses of the extended X‐ray absorption fine structure (EXAFS) spectra are employed to identify the phase composition of the oxide upon heating to 900 °C. Only the ZnO 2 phase is found up to 180 °C, whereas only the nanocrystalline ZnO phase is occurring above 250 °C. Detailed structural information on the temperature dependence of the local environment of zinc atoms is obtained using the reverse Monte Carlo (RMC) simulations. A strong increase of disorder is found upon approaching the decomposition temperature, evidenced by the broadening of Zn–O and Zn–Zn pair distribution functions (PDFs) and related mean‐square relative displacements.

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“…A peculiar crystallographic structure of

{ZnO}_{2}

containing peroxide (O 2 ) 2− groups is responsible for its low decomposition temperature of about 200–230 °C, [ 30,31 ] which can be further affected by reducing the size of

{ZnO}_{2}

crystallites. [ 28,32 ] Upon decomposition,

{ZnO}_{2}

transforms to nanocrystalline ZnO (nano‐ZnO). It was suggested in ref.…”

Section: Introductionmentioning

confidence: 99%

“…It was suggested in ref. [32] that a formation of an intermediate amorphous phase can occur before the growth of the nano‐ZnO phase. The use of

{ZnO}_{2}

as a precursor for the production of ZnO nanoparticles and thin films has been demonstrated in several studies.…”

Section: Introductionmentioning

confidence: 99%

In Situ Study of Zinc Peroxide Decomposition to Zinc Oxide by X‐Ray Absorption Spectroscopy and Reverse Monte Carlo Simulations

Kuzmin

Pudza

Klementiev

2022

Physica Status Solidi (b)

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“…However, the coordination of zinc atoms is tetrahedral in ZnO, while it is octahedral in ZnO 2 . A peculiar crystallographic structure of ZnO 2 containing peroxide (O 2 ) 2− groups is responsible for its low decomposition temperature of about 200-230 • C [30,31], which can be further affected by reducing the size of ZnO 2 crystallites [28,32]. Upon decomposition, ZnO 2 transforms to nanocrystalline ZnO (nano-ZnO).…”

Section: Introductionmentioning

confidence: 99%

“…Upon decomposition, ZnO 2 transforms to nanocrystalline ZnO (nano-ZnO). It was suggested in [32] that a formation of an intermediate amorphous phase can occur before the growth of the nano-ZnO phase. The use of ZnO 2 as a precursor for the production of ZnO nanoparticles and thin films has been demonstrated in several studies [30,32,33,34,35,36].…”

Section: Introductionmentioning

confidence: 99%

“…It was suggested in [32] that a formation of an intermediate amorphous phase can occur before the growth of the nano-ZnO phase. The use of ZnO 2 as a precursor for the production of ZnO nanoparticles and thin films has been demonstrated in several studies [30,32,33,34,35,36]. Among many applications [29], such nanoparticles may be of interest in printed optoelectronics as part of zinc oxide inkjet inks [37,38,39].…”

Section: Introductionmentioning

confidence: 99%

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In situ study of zinc peroxide decomposition to zinc oxide by X-ray absorption spectroscopy and reverse Monte-Carlo simulations

Kuzmin,

Pudza,

Klementiev

2022

Preprint

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The Zn K-edge X-ray absorption spectroscopy has been used to investigate in situ the decomposition of zinc peroxide (ZnO2) to zinc oxide (ZnO). Principal component and linear combination analyses of the EXAFS spectra have been employed to identify the phase composition of the oxide upon heating to 900 • C. Only the ZnO2 phase has been found up to 180 • C, whereas only the nanocrystalline ZnO phase has occurred above 250 • C. Detailed structural information on the temperature dependence of the local environment of zinc atoms has been obtained using the reverse Monte Carlo simulations. A strong increase of disorder has been found upon approaching the decomposition temperature, evidenced by the broadening of Zn-O and Zn-Zn pair distribution functions and related mean-square relative displacements.

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Powder Diffraction and Synchrotron Radiation

Artioli

2014

Synchrotron Radiation

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Tracking the Formation of Nano-sized Zinc Oxide from Zinc Peroxide by In Situ XAS and XRD

Cited by 6 publications

References 9 publications

In Situ Study of Zinc Peroxide Decomposition to Zinc Oxide by X‐Ray Absorption Spectroscopy and Reverse Monte Carlo Simulations

In Situ Study of Zinc Peroxide Decomposition to Zinc Oxide by X‐Ray Absorption Spectroscopy and Reverse Monte Carlo Simulations

In situ study of zinc peroxide decomposition to zinc oxide by X-ray absorption spectroscopy and reverse Monte-Carlo simulations

Powder Diffraction and Synchrotron Radiation

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