Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH Group
The hydroxyl groups generated by hydrolysis are grafted onto the surface of BiPO4, and a stable surface hydroxylation structure is formed during the subsequent calcination process. This would facilitate the formation of a new hydroxyl functional structure on the surface of the parent photocatalyst w...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2024-03-01
|
| Series: | Small Structures |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/sstr.202300339 |
| _version_ | 1797267984449798144 |
|---|---|
| author | Zhuang Yang Zengshou Qiang Jian Wang Yajun Wang Wenqing Yao |
| author_facet | Zhuang Yang Zengshou Qiang Jian Wang Yajun Wang Wenqing Yao |
| author_sort | Zhuang Yang |
| collection | DOAJ |
| description | The hydroxyl groups generated by hydrolysis are grafted onto the surface of BiPO4, and a stable surface hydroxylation structure is formed during the subsequent calcination process. This would facilitate the formation of a new hydroxyl functional structure on the surface of the parent photocatalyst without damaging its intrinsic structure. Synchronous illumination X‐Ray photoelectron spectroscopy shows that the hydroxyl functional ultrafine BiPO4 can realize the conversion of defective oxygen to lattice oxygen, which is more conducive in improving the photocatalytic efficiency. The process of filling hydroxyl oxygen vacancies and forming a stable structure is explored using in‐ situ infrared spectroscopy. The induced dipole moment promotes the separation of photogenerated electron–hole pairs, which is beneficial for the enhancement of photocatalytic activity. The dipole moment of the hydroxyl functional‐modified ultrafine BiPO4 is −1.409 D compared to −1.385 D for ordinary BiPO4. The results of this study indicate that hydroxyl functional structure and reduced sample granularity are effective strategies to improve the photocatalytic performance of BiPO4. |
| first_indexed | 2024-04-25T01:25:16Z |
| format | Article |
| id | doaj.art-edc938e862ce48489b12ed2fef139a7e |
| institution | Directory Open Access Journal |
| issn | 2688-4062 |
| language | English |
| last_indexed | 2024-04-25T01:25:16Z |
| publishDate | 2024-03-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj.art-edc938e862ce48489b12ed2fef139a7e2024-03-09T03:59:17ZengWiley-VCHSmall Structures2688-40622024-03-0153n/an/a10.1002/sstr.202300339Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH GroupZhuang Yang0Zengshou Qiang1Jian Wang2Yajun Wang3Wenqing Yao4College of New Energy and Materials State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 ChinaCollege of Electronic and Optical Engineering & College of Microelectronics Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices Nanjing University of Posts & Telecommunications Nanjing 210023 ChinaCollege of Environment and Chemical Engineering Dalian University Dalian 116622 ChinaCollege of New Energy and Materials State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 ChinaDepartment of Chemistry Beijing Key Laboratory for Analytical Methods and Instrumentation Tsinghua University Beijing 100084 ChinaThe hydroxyl groups generated by hydrolysis are grafted onto the surface of BiPO4, and a stable surface hydroxylation structure is formed during the subsequent calcination process. This would facilitate the formation of a new hydroxyl functional structure on the surface of the parent photocatalyst without damaging its intrinsic structure. Synchronous illumination X‐Ray photoelectron spectroscopy shows that the hydroxyl functional ultrafine BiPO4 can realize the conversion of defective oxygen to lattice oxygen, which is more conducive in improving the photocatalytic efficiency. The process of filling hydroxyl oxygen vacancies and forming a stable structure is explored using in‐ situ infrared spectroscopy. The induced dipole moment promotes the separation of photogenerated electron–hole pairs, which is beneficial for the enhancement of photocatalytic activity. The dipole moment of the hydroxyl functional‐modified ultrafine BiPO4 is −1.409 D compared to −1.385 D for ordinary BiPO4. The results of this study indicate that hydroxyl functional structure and reduced sample granularity are effective strategies to improve the photocatalytic performance of BiPO4.https://doi.org/10.1002/sstr.202300339BiPO4dipole momentshydroxyl functional groupsphotocatalysissynchronous illuminationXPS |
| spellingShingle | Zhuang Yang Zengshou Qiang Jian Wang Yajun Wang Wenqing Yao Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH Group Small Structures BiPO4 dipole moments hydroxyl functional groups photocatalysis synchronous illumination XPS |
| title | Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH Group |
| title_full | Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH Group |
| title_fullStr | Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH Group |
| title_full_unstemmed | Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH Group |
| title_short | Facial Construction of Hydroxyl Functional Modified Ultrafine BiPO4 with Variation of Dipole Moment Induced by –OH Group |
| title_sort | facial construction of hydroxyl functional modified ultrafine bipo4 with variation of dipole moment induced by oh group |
| topic | BiPO4 dipole moments hydroxyl functional groups photocatalysis synchronous illumination XPS |
| url | https://doi.org/10.1002/sstr.202300339 |
| work_keys_str_mv | AT zhuangyang facialconstructionofhydroxylfunctionalmodifiedultrafinebipo4withvariationofdipolemomentinducedbyohgroup AT zengshouqiang facialconstructionofhydroxylfunctionalmodifiedultrafinebipo4withvariationofdipolemomentinducedbyohgroup AT jianwang facialconstructionofhydroxylfunctionalmodifiedultrafinebipo4withvariationofdipolemomentinducedbyohgroup AT yajunwang facialconstructionofhydroxylfunctionalmodifiedultrafinebipo4withvariationofdipolemomentinducedbyohgroup AT wenqingyao facialconstructionofhydroxylfunctionalmodifiedultrafinebipo4withvariationofdipolemomentinducedbyohgroup |