Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen Vacancy
Increasing the concentration of oxygen vacancies in ceria-based materials to solve the bottleneck of their applications in various fields has always been a research hotspot. In this paper, ceria-based cerium–oxygen–sulfur (Ce-O-S) composites that were composed of CeO<sub>2</sub>, Ce<s...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/1/127 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841549066501095424 |
|---|---|
| author | Yanping Li Xue Bian Hui Dong Hongtao Chang Wenyuan Wu |
| author_facet | Yanping Li Xue Bian Hui Dong Hongtao Chang Wenyuan Wu |
| author_sort | Yanping Li |
| collection | DOAJ |
| description | Increasing the concentration of oxygen vacancies in ceria-based materials to solve the bottleneck of their applications in various fields has always been a research hotspot. In this paper, ceria-based cerium–oxygen–sulfur (Ce-O-S) composites that were composed of CeO<sub>2</sub>, Ce<sub>4</sub>O<sub>4</sub>S<sub>3</sub>, and Ce<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> were synthesized by a precipitation method. The compositional, structural, morphological, and light response characteristics of prepared Ce-O-S composites were investigated by various characterization techniques. The molar ratio of oxygen vacancies to lattice oxygen can reach a maximum of 1.83 with Ce-O-S composites. The band gap values of the Ce-O-S composites were less than 3.00 eV, and the minimum value was 2.89 eV (at pH 12), which successfully extended the light response range from the ultraviolet light region to the short-wave blue light region. The remarkable light response performance of Ce-O-S composites can be mainly attributed to the high proportion of oxygen vacancy. Moreover, the higher proportion of oxygen vacancies can be attributed to the doping of Ce (+3) and S (−2) in the lattice of CeO<sub>2</sub>, and the synergistic effect of CeO<sub>2</sub>, Ce<sub>4</sub>O<sub>4</sub>S<sub>3</sub>, and Ce<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>. Moreover, the ceria-based Ce-O-S composites with rich oxygen vacancy in this research can be applied in light blocking, photocatalysis, and other related fields. |
| format | Article |
| id | doaj-art-4e7b72d8a78949afa3aae7714fdae717 |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-4e7b72d8a78949afa3aae7714fdae7172025-01-10T13:18:58ZengMDPI AGMolecules1420-30492024-12-0130112710.3390/molecules30010127Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen VacancyYanping Li0Xue Bian1Hui Dong2Hongtao Chang3Wenyuan Wu4Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, Shenyang 110819, ChinaKey Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, Shenyang 110819, ChinaKey Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, Shenyang 110819, ChinaSchool of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou 014010, ChinaKey Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, Shenyang 110819, ChinaIncreasing the concentration of oxygen vacancies in ceria-based materials to solve the bottleneck of their applications in various fields has always been a research hotspot. In this paper, ceria-based cerium–oxygen–sulfur (Ce-O-S) composites that were composed of CeO<sub>2</sub>, Ce<sub>4</sub>O<sub>4</sub>S<sub>3</sub>, and Ce<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> were synthesized by a precipitation method. The compositional, structural, morphological, and light response characteristics of prepared Ce-O-S composites were investigated by various characterization techniques. The molar ratio of oxygen vacancies to lattice oxygen can reach a maximum of 1.83 with Ce-O-S composites. The band gap values of the Ce-O-S composites were less than 3.00 eV, and the minimum value was 2.89 eV (at pH 12), which successfully extended the light response range from the ultraviolet light region to the short-wave blue light region. The remarkable light response performance of Ce-O-S composites can be mainly attributed to the high proportion of oxygen vacancy. Moreover, the higher proportion of oxygen vacancies can be attributed to the doping of Ce (+3) and S (−2) in the lattice of CeO<sub>2</sub>, and the synergistic effect of CeO<sub>2</sub>, Ce<sub>4</sub>O<sub>4</sub>S<sub>3</sub>, and Ce<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>. Moreover, the ceria-based Ce-O-S composites with rich oxygen vacancy in this research can be applied in light blocking, photocatalysis, and other related fields.https://www.mdpi.com/1420-3049/30/1/127ceriaoxygen vacancyband gaplight response |
| spellingShingle | Yanping Li Xue Bian Hui Dong Hongtao Chang Wenyuan Wu Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen Vacancy Molecules ceria oxygen vacancy band gap light response |
| title | Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen Vacancy |
| title_full | Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen Vacancy |
| title_fullStr | Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen Vacancy |
| title_full_unstemmed | Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen Vacancy |
| title_short | Enhanced Light Response Performance of Ceria-Based Composites with Rich Oxygen Vacancy |
| title_sort | enhanced light response performance of ceria based composites with rich oxygen vacancy |
| topic | ceria oxygen vacancy band gap light response |
| url | https://www.mdpi.com/1420-3049/30/1/127 |
| work_keys_str_mv | AT yanpingli enhancedlightresponseperformanceofceriabasedcompositeswithrichoxygenvacancy AT xuebian enhancedlightresponseperformanceofceriabasedcompositeswithrichoxygenvacancy AT huidong enhancedlightresponseperformanceofceriabasedcompositeswithrichoxygenvacancy AT hongtaochang enhancedlightresponseperformanceofceriabasedcompositeswithrichoxygenvacancy AT wenyuanwu enhancedlightresponseperformanceofceriabasedcompositeswithrichoxygenvacancy |