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Defect engineering in high‐entropy ceramics glaze enable infrared emissivity and antibacterial properties.

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Title: Defect engineering in high‐entropy ceramics glaze enable infrared emissivity and antibacterial properties.
Authors: Zhang, Xu1 (AUTHOR), Wang, Peng1 (AUTHOR), Zeng, Xiaojun1 (AUTHOR), Lu, Xilong1,2,3 (AUTHOR), Luo, Ting1,2,3 (AUTHOR), Su, Xiaoli1,2,3 (AUTHOR), Zeng, Tao1,2,3 (AUTHOR), Dong, Gang1,2 (AUTHOR), Chen, Yunxia1,2,3 (AUTHOR) chenyunxia@jcu.edu.cn
Source: Journal of the American Ceramic Society. Sep2025, Vol. 108 Issue 9, p1-13. 13p.
Subjects: Ceramic engineering, Glazes, Oxygen vacancy, Glazing (Ceramics), Infrared radiation
Abstract: Making high‐entropy oxides (HEOs) powder practical is a great challenge. Despite recent advancements, the practicality of high‐entropy ceramics (HECs) glazes for portable infrared radiation and antimicrobial remains doubtful due to its numerous defects. Here, we report the doping of Zn or Cu in quinary HEOs system ((Cr, Mn, Fe, Co, Ni)3O4) to form hexanary HEOs systems ((Cr, Mn, Fe, Co, Ni, Zn)3O4 or (Cr, Mn, Fe, Co, Ni, Cu)3O4), which demonstrate promising efficiency in terms of infrared emissivity. The impact of defects (oxygen vacancies) on the electronic and band structure of HEOs and their infrared emissivity are fundamentally elucidated. Notably, we introduced HEOs into ceramic glaze for the first time, and the designed HECs glaze enables higher infrared radiation capability, with infrared emissivity of 85.47% and 91.27% µm in wavelength ranges of 0.78–2.5 and 2.5–16. The HECs glazes also exhibit excellent antibacterial effects against Escherichia coli and Staphylococcus aureus. Essentially, orbital hybridization induced by high‐entropy strategy can effectively enhance the probability of electron transitions, thereby improving the ability to absorb and emit infrared radiation. The introduction of multivalent metal creates numerous oxygen vacancies, which narrows the band gap and makes it easier for electrons to cross energy levels and thus participate in the infrared radiation process. This work introduces an approach for enhancing the infrared radiation and antibacterial properties of HECs glazes based on high‐entropy effects and defect engineering, providing a platform for designing ceramic glazes for thermal management and biology. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Defect engineering in high‐entropy ceramics glaze enable infrared emissivity and antibacterial properties.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Xu%22">Zhang, Xu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Peng%22">Wang, Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zeng%2C+Xiaojun%22">Zeng, Xiaojun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Xilong%22">Lu, Xilong</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Ting%22">Luo, Ting</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Su%2C+Xiaoli%22">Su, Xiaoli</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zeng%2C+Tao%22">Zeng, Tao</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dong%2C+Gang%22">Dong, Gang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Yunxia%22">Chen, Yunxia</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> chenyunxia@jcu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Ceramic+Society%22">Journal of the American Ceramic Society</searchLink>. Sep2025, Vol. 108 Issue 9, p1-13. 13p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Ceramic+engineering%22">Ceramic engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Glazes%22">Glazes</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+vacancy%22">Oxygen vacancy</searchLink><br /><searchLink fieldCode="DE" term="%22Glazing+%28Ceramics%29%22">Glazing (Ceramics)</searchLink><br /><searchLink fieldCode="DE" term="%22Infrared+radiation%22">Infrared radiation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Making high‐entropy oxides (HEOs) powder practical is a great challenge. Despite recent advancements, the practicality of high‐entropy ceramics (HECs) glazes for portable infrared radiation and antimicrobial remains doubtful due to its numerous defects. Here, we report the doping of Zn or Cu in quinary HEOs system ((Cr, Mn, Fe, Co, Ni)3O4) to form hexanary HEOs systems ((Cr, Mn, Fe, Co, Ni, Zn)3O4 or (Cr, Mn, Fe, Co, Ni, Cu)3O4), which demonstrate promising efficiency in terms of infrared emissivity. The impact of defects (oxygen vacancies) on the electronic and band structure of HEOs and their infrared emissivity are fundamentally elucidated. Notably, we introduced HEOs into ceramic glaze for the first time, and the designed HECs glaze enables higher infrared radiation capability, with infrared emissivity of 85.47% and 91.27% µm in wavelength ranges of 0.78–2.5 and 2.5–16. The HECs glazes also exhibit excellent antibacterial effects against Escherichia coli and Staphylococcus aureus. Essentially, orbital hybridization induced by high‐entropy strategy can effectively enhance the probability of electron transitions, thereby improving the ability to absorb and emit infrared radiation. The introduction of multivalent metal creates numerous oxygen vacancies, which narrows the band gap and makes it easier for electrons to cross energy levels and thus participate in the infrared radiation process. This work introduces an approach for enhancing the infrared radiation and antibacterial properties of HECs glazes based on high‐entropy effects and defect engineering, providing a platform for designing ceramic glazes for thermal management and biology. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/jace.20646
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      – Code: eng
        Text: English
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        PageCount: 13
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      – SubjectFull: Ceramic engineering
        Type: general
      – SubjectFull: Glazes
        Type: general
      – SubjectFull: Oxygen vacancy
        Type: general
      – SubjectFull: Glazing (Ceramics)
        Type: general
      – SubjectFull: Infrared radiation
        Type: general
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      – TitleFull: Defect engineering in high‐entropy ceramics glaze enable infrared emissivity and antibacterial properties.
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            NameFull: Zhang, Xu
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            – D: 01
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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