Impact of calcination temperature on physical and photoelectrochemical properties of Bi2O3 nanoparticles toward antibacterial and biosensor applications.
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| Title: | Impact of calcination temperature on physical and photoelectrochemical properties of Bi2O3 nanoparticles toward antibacterial and biosensor applications. |
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| Authors: | Habib, Mohamed A.1 (AUTHOR) mahabib@imamu.edu.sa, Abdelfatah, Mahmoud1,2,3 (AUTHOR) mahmoud.abdelfatah@sci.kfs.edu.eg, Goher, Nermeen2,3 (AUTHOR), Amer, Yassmin Atef4 (AUTHOR), El-Mohsnawy, Eithar4 (AUTHOR), Raza, Nadeem1 (AUTHOR), Mahmoud, K.R.2,3 (AUTHOR), Sun, Baoquan5,6 (AUTHOR), El-Shaer, Abdelhamid2,3 (AUTHOR) |
| Source: | Ceramics International. Mar2026, Vol. 52 Issue 6, p7222-7236. 15p. |
| Subjects: | Bismuth oxides, Antibacterial agents, Cytotoxins, Oxygen vacancy, Biosensors, Reactive oxygen species, Photoelectrochemistry |
| Abstract: | Here we present the growth of Bi 2 O 3 nanoparticles by solution combustion technique then investigation effect of calcination temperature to determine ideal temperature for the highest antibacterial activity and biosensor applications. Many characterization methods were used to investigate characteristics of the fabricated samples. XRD displayed that β- and α-Bi 2 O 3 NPs have been formed with tetragonal and monoclinic crystal structure with particle size increases from 21 to 66 nm with rising of calcination temperature. XPS data displayed existence of Bi3+ and oxygen vacancies in the fabricated samples. Raman Spectra showed vibration modes of α-Bi 2 O 3 and β-Bi 2 O 3 NPs. SEM images proved that particles agglomerate for - and α-Bi 2 O 3 NPs with increasing calcination temperatures. TEM images displayed that average particle size was found to be 25 and 72 nm for samples calcined at 200 and 600 °C, respectively. UV–Vis data showed characteristic peaks of β- and α-Bi 2 O 3 NPs with gap energy decreasing from 2.95 to 2.74 eV. The carrier concentration for the fabricated samples decreased from 5.6 × 1019 cm−3 to 2.4 × 1019 cm−3 rendering to Mott-Schottky measurements. PL, PALS, EIS and the Mott-Schottky results show that the samples calcined at 200 and 600 °C have the highest oxygen vacancies/defects which enhances the ROS generation which leads to the death of gram-negative bacteria, E. coli. The chronoamperometry curves showed the fast response of fabricated electrodes with sensitivity of 0.11 and 0.02 μA mM−1 cm−2 for the Bi 2 O 3 NPs calcined at 200 and 600 °C, respectively. The synthesized Bi 2 O 3 nanoparticles exhibit moderate cytotoxicity in human WI-38 cells, with a CC 50 value of approximately 309 μg/ml. This indicates that they maintain high cell viability at low and intermediate concentrations, while a significant decrease in survival rates is observed at high doses (>250 μg/ml). Our results displayed the effectiveness of an alternative antibacterial agent (Bi 2 O 3) that can inhibit the growth of bacterial cells as well as is promising candidate for biomedical and biosensor applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Ceramics International is the property of Elsevier B.V. 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.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 191815992 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Impact of calcination temperature on physical and photoelectrochemical properties of Bi2O3 nanoparticles toward antibacterial and biosensor applications. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Habib%2C+Mohamed+A%2E%22">Habib, Mohamed A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mahabib@imamu.edu.sa</i><br /><searchLink fieldCode="AR" term="%22Abdelfatah%2C+Mahmoud%22">Abdelfatah, Mahmoud</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> mahmoud.abdelfatah@sci.kfs.edu.eg</i><br /><searchLink fieldCode="AR" term="%22Goher%2C+Nermeen%22">Goher, Nermeen</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Amer%2C+Yassmin+Atef%22">Amer, Yassmin Atef</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22El-Mohsnawy%2C+Eithar%22">El-Mohsnawy, Eithar</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Raza%2C+Nadeem%22">Raza, Nadeem</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mahmoud%2C+K%2ER%2E%22">Mahmoud, K.R.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Baoquan%22">Sun, Baoquan</searchLink><relatesTo>5,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22El-Shaer%2C+Abdelhamid%22">El-Shaer, Abdelhamid</searchLink><relatesTo>2,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Mar2026, Vol. 52 Issue 6, p7222-7236. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Bismuth+oxides%22">Bismuth oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Antibacterial+agents%22">Antibacterial agents</searchLink><br /><searchLink fieldCode="DE" term="%22Cytotoxins%22">Cytotoxins</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+vacancy%22">Oxygen vacancy</searchLink><br /><searchLink fieldCode="DE" term="%22Biosensors%22">Biosensors</searchLink><br /><searchLink fieldCode="DE" term="%22Reactive+oxygen+species%22">Reactive oxygen species</searchLink><br /><searchLink fieldCode="DE" term="%22Photoelectrochemistry%22">Photoelectrochemistry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Here we present the growth of Bi 2 O 3 nanoparticles by solution combustion technique then investigation effect of calcination temperature to determine ideal temperature for the highest antibacterial activity and biosensor applications. Many characterization methods were used to investigate characteristics of the fabricated samples. XRD displayed that β- and α-Bi 2 O 3 NPs have been formed with tetragonal and monoclinic crystal structure with particle size increases from 21 to 66 nm with rising of calcination temperature. XPS data displayed existence of Bi3+ and oxygen vacancies in the fabricated samples. Raman Spectra showed vibration modes of α-Bi 2 O 3 and β-Bi 2 O 3 NPs. SEM images proved that particles agglomerate for - and α-Bi 2 O 3 NPs with increasing calcination temperatures. TEM images displayed that average particle size was found to be 25 and 72 nm for samples calcined at 200 and 600 °C, respectively. UV–Vis data showed characteristic peaks of β- and α-Bi 2 O 3 NPs with gap energy decreasing from 2.95 to 2.74 eV. The carrier concentration for the fabricated samples decreased from 5.6 × 1019 cm−3 to 2.4 × 1019 cm−3 rendering to Mott-Schottky measurements. PL, PALS, EIS and the Mott-Schottky results show that the samples calcined at 200 and 600 °C have the highest oxygen vacancies/defects which enhances the ROS generation which leads to the death of gram-negative bacteria, E. coli. The chronoamperometry curves showed the fast response of fabricated electrodes with sensitivity of 0.11 and 0.02 μA mM−1 cm−2 for the Bi 2 O 3 NPs calcined at 200 and 600 °C, respectively. The synthesized Bi 2 O 3 nanoparticles exhibit moderate cytotoxicity in human WI-38 cells, with a CC 50 value of approximately 309 μg/ml. This indicates that they maintain high cell viability at low and intermediate concentrations, while a significant decrease in survival rates is observed at high doses (>250 μg/ml). Our results displayed the effectiveness of an alternative antibacterial agent (Bi 2 O 3) that can inhibit the growth of bacterial cells as well as is promising candidate for biomedical and biosensor applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. 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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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ceramint.2025.12.465 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 7222 Subjects: – SubjectFull: Bismuth oxides Type: general – SubjectFull: Antibacterial agents Type: general – SubjectFull: Cytotoxins Type: general – SubjectFull: Oxygen vacancy Type: general – SubjectFull: Biosensors Type: general – SubjectFull: Reactive oxygen species Type: general – SubjectFull: Photoelectrochemistry Type: general Titles: – TitleFull: Impact of calcination temperature on physical and photoelectrochemical properties of Bi2O3 nanoparticles toward antibacterial and biosensor applications. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Habib, Mohamed A. – PersonEntity: Name: NameFull: Abdelfatah, Mahmoud – PersonEntity: Name: NameFull: Goher, Nermeen – PersonEntity: Name: NameFull: Amer, Yassmin Atef – PersonEntity: Name: NameFull: El-Mohsnawy, Eithar – PersonEntity: Name: NameFull: Raza, Nadeem – PersonEntity: Name: NameFull: Mahmoud, K.R. – PersonEntity: Name: NameFull: Sun, Baoquan – PersonEntity: Name: NameFull: El-Shaer, Abdelhamid IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 02728842 Numbering: – Type: volume Value: 52 – Type: issue Value: 6 Titles: – TitleFull: Ceramics International Type: main |
| ResultId | 1 |
