2020
DOI: 10.1021/acs.jpcc.0c03381
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X-ray Nanospectroscopy Reveals Binary Defect Populations in Sub-micrometric ZnO Crystallites

Abstract: Besides its many applications in electronics, photonics, and catalysis, ZnO has also been extensively used as the pigment zinc white ever since its introduction in the first half of the 19th century. It is shown here that zinc whites (ZnO formed through zinc vapor oxidation) form a chemically binary system, with each of the sub-micrometric crystallites belonging to either of two distinct classes. The observation of the two classes is done based on X-ray absorption nanospectroscopy and was determined to be caus… Show more

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Cited by 6 publications
(6 citation statements)
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“…In searching for as uitable synthetic approach for am odel system,wefound that the synthesis of zinc oxide nanoparticles or thin films by oxidation of zinc metal has rarely been studied so far. [21,22] This comesa sasurprise, as it should be ac onvenient approacha nd would avoid especially organic contamination, which is often introduced if using solution-based approaches. Furthermore, subsequent ZnO nanowire array deposition and its integration in aUVs ensor is studied.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…In searching for as uitable synthetic approach for am odel system,wefound that the synthesis of zinc oxide nanoparticles or thin films by oxidation of zinc metal has rarely been studied so far. [21,22] This comesa sasurprise, as it should be ac onvenient approacha nd would avoid especially organic contamination, which is often introduced if using solution-based approaches. Furthermore, subsequent ZnO nanowire array deposition and its integration in aUVs ensor is studied.…”
Section: Introductionmentioning
confidence: 99%
“…This approach is unique, and will help to understand the semiconducting behavior of the films. In searching for a suitable synthetic approach for a model system, we found that the synthesis of zinc oxide nanoparticles or thin films by oxidation of zinc metal has rarely been studied so far [21, 22] . This comes as a surprise, as it should be a convenient approach and would avoid especially organic contamination, which is often introduced if using solution‐based approaches.…”
Section: Introductionmentioning
confidence: 99%
“…XAS was performed to compare the local electronic structures of the three tested samples in the unoccupied state. The Zn L 3 -edge spectra at ∼1028.3 eV (labeled as B; due to transitions from Zn 2p to 4s/3d) displayed a typical characteristic of the würtzite ZnO structure, and a clear absorption peak corresponding to V O was confirmed at ∼1024.6 eV (labeled as A; Figure a). , Similar to the HRXPS results, the intensities of the V O -induced peaks for the Co 3+ @ZnO and Co 2+ @ZnO NPs were found to be slightly deviated compared to that of pristine ZnO NPs. Further, Zn L-edge XAS analysis also revealed that the Co 3+ @ZnO NPs possessed a higher density of V O , whereas the Co 2+ @ZnO NPs possessed a lower density of V O compared to pristine ZnO NPs.…”
Section: Results and Discussionmentioning
confidence: 75%
“…These absorption features were found to respond most stronglyand oppositely -as a function of the projection angle , making them suitable for quantification of the XNLD parameters. As the authors discussed in a previous paper on soft research papers X-ray nanospectroscopy of ZnO, these two diagnostic energies are thought to correspond to transitions between Zn 2p (J = 3/2) and Zn 4d derived states (Hageraats et al, 2020). The anisotropic character of the Zn 4d derived states causes both these transitions to have a dichroic character.…”
Section: Data Processingmentioning
confidence: 96%
“…Although this study quantifies XNLD, the mathematical similarity with XMLD means that such dichroic parameters could be similarly quantified using the proposed methodology. This work is based in part on the experimental data presented first by Hageraats et al (2020), and offers a revised interpretation of the results.…”
Section: Introductionmentioning
confidence: 99%