Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources
The photocatalytic TiO2 has been regarded as a promising catalyst of nonbiodegradable organic pollutants in wastewater. Resolving some issues of agglomeration, recoverability, and poor efficiency, an inorganic TiO2‐based catalyst has been constructed by a template method, which picks out bamboo fibe...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2025-07-01
|
| Series: | ChemElectroChem |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/celc.202500084 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849319704477302784 |
|---|---|
| author | Xin Liu Gonggang Liu Shanshan Chang Yuanyuan Liao Jinbo Hu |
| author_facet | Xin Liu Gonggang Liu Shanshan Chang Yuanyuan Liao Jinbo Hu |
| author_sort | Xin Liu |
| collection | DOAJ |
| description | The photocatalytic TiO2 has been regarded as a promising catalyst of nonbiodegradable organic pollutants in wastewater. Resolving some issues of agglomeration, recoverability, and poor efficiency, an inorganic TiO2‐based catalyst has been constructed by a template method, which picks out bamboo fibers originating from processing waste. Characterization of the hollow fibrous TiO2/Fe3O4 catalyst confirms the successful loading of Fe3O4 and TiO2, along with a well‐developed macroporous structure and high porosity (67.46%). At a solar intensity of 1 kW/m2, when the amount of TiO2/Fe3O4 is 0.3 g and the amount of H2O2 added is 3 mL, its degradation effect of 88.36% on industrial dye wastewater is optimal. The high magnetic saturation strength (5.78 emu/g) endows TiO2/Fe3O4 with ultra‐high magnetic properties. As expected, after 10 catalytic cycles, the average degradation rate of TiO2/Fe3O4 toward methylene blue (MB) (0.2 L, 10 mg/L) remains above 96.2%, indicating that TiO2/Fe3O4 has ultra‐high recyclability and repeatability. Furthermore, the degradation kinetics analysis shows that TiO2/Fe3O4 exhibits complete degradation of MB within 1 h and the degradation follows quasi‐primary kinetics (k = 06062 min−1, R2 = 0.99747). Free radical burst experiments also indicate that hydroxyl radicals are active species that may play a major role in the solar‐photo‐Fenton system. |
| format | Article |
| id | doaj-art-62dc0e0ac2a3478c97f2f6485407ba1c |
| institution | Kabale University |
| issn | 2196-0216 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemElectroChem |
| spelling | doaj-art-62dc0e0ac2a3478c97f2f6485407ba1c2025-08-20T03:50:21ZengWiley-VCHChemElectroChem2196-02162025-07-011214n/an/a10.1002/celc.202500084Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable ResourcesXin Liu0Gonggang Liu1Shanshan Chang2Yuanyuan Liao3Jinbo Hu4College of Materials Science and Engineering Central South University of Forestry and Technology Changsha 410004 ChinaCollege of Materials Science and Engineering Central South University of Forestry and Technology Changsha 410004 ChinaCollege of Materials Science and Engineering Central South University of Forestry and Technology Changsha 410004 ChinaCollege of Materials Science and Engineering Central South University of Forestry and Technology Changsha 410004 ChinaCollege of Materials Science and Engineering Central South University of Forestry and Technology Changsha 410004 ChinaThe photocatalytic TiO2 has been regarded as a promising catalyst of nonbiodegradable organic pollutants in wastewater. Resolving some issues of agglomeration, recoverability, and poor efficiency, an inorganic TiO2‐based catalyst has been constructed by a template method, which picks out bamboo fibers originating from processing waste. Characterization of the hollow fibrous TiO2/Fe3O4 catalyst confirms the successful loading of Fe3O4 and TiO2, along with a well‐developed macroporous structure and high porosity (67.46%). At a solar intensity of 1 kW/m2, when the amount of TiO2/Fe3O4 is 0.3 g and the amount of H2O2 added is 3 mL, its degradation effect of 88.36% on industrial dye wastewater is optimal. The high magnetic saturation strength (5.78 emu/g) endows TiO2/Fe3O4 with ultra‐high magnetic properties. As expected, after 10 catalytic cycles, the average degradation rate of TiO2/Fe3O4 toward methylene blue (MB) (0.2 L, 10 mg/L) remains above 96.2%, indicating that TiO2/Fe3O4 has ultra‐high recyclability and repeatability. Furthermore, the degradation kinetics analysis shows that TiO2/Fe3O4 exhibits complete degradation of MB within 1 h and the degradation follows quasi‐primary kinetics (k = 06062 min−1, R2 = 0.99747). Free radical burst experiments also indicate that hydroxyl radicals are active species that may play a major role in the solar‐photo‐Fenton system.https://doi.org/10.1002/celc.202500084calcinationsphoto‐FentonreusabilityTiO2/Fe3O4 |
| spellingShingle | Xin Liu Gonggang Liu Shanshan Chang Yuanyuan Liao Jinbo Hu Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources ChemElectroChem calcinations photo‐Fenton reusability TiO2/Fe3O4 |
| title | Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources |
| title_full | Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources |
| title_fullStr | Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources |
| title_full_unstemmed | Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources |
| title_short | Macroporous Hollow‐Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources |
| title_sort | macroporous hollow fibrous and magnetically recoverable tio2 catalysts for converting dye wastewater to valuable resources |
| topic | calcinations photo‐Fenton reusability TiO2/Fe3O4 |
| url | https://doi.org/10.1002/celc.202500084 |
| work_keys_str_mv | AT xinliu macroporoushollowfibrousandmagneticallyrecoverabletio2catalystsforconvertingdyewastewatertovaluableresources AT gonggangliu macroporoushollowfibrousandmagneticallyrecoverabletio2catalystsforconvertingdyewastewatertovaluableresources AT shanshanchang macroporoushollowfibrousandmagneticallyrecoverabletio2catalystsforconvertingdyewastewatertovaluableresources AT yuanyuanliao macroporoushollowfibrousandmagneticallyrecoverabletio2catalystsforconvertingdyewastewatertovaluableresources AT jinbohu macroporoushollowfibrousandmagneticallyrecoverabletio2catalystsforconvertingdyewastewatertovaluableresources |