Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts
To address the challenges related with using powdered catalysts and freshwater in photocatalytic hydrogen (H2) production, this study explores the performance of carbon nitride-based catalyst immobilized on a 3D structure, employing seawater as a proton source. Methanol and saccharides such as cello...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
|
| Series: | Chemical Engineering Journal Advances |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666821124001145 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832557551487549440 |
|---|---|
| author | Ana L. Machado Ricardo A. Oliveira Goran Dražić Joana C. Lopes Cláudia G. Silva Joaquim L. Faria Maria J. Sampaio |
| author_facet | Ana L. Machado Ricardo A. Oliveira Goran Dražić Joana C. Lopes Cláudia G. Silva Joaquim L. Faria Maria J. Sampaio |
| author_sort | Ana L. Machado |
| collection | DOAJ |
| description | To address the challenges related with using powdered catalysts and freshwater in photocatalytic hydrogen (H2) production, this study explores the performance of carbon nitride-based catalyst immobilized on a 3D structure, employing seawater as a proton source. Methanol and saccharides such as cellobiose, fructose, glucose, saccharose and sorbitol were used as sacrificial agents to accelerate H2 production via photoreforming. The results using immobilized photocatalyst showed that, at similar molar concentrations, glucose reveals higher efficiency compared with methanol, achieving an amount of H2 evolution of 102 µmol after 180 min under visible light, compared to 45 µmol with methanol. Among the mono- and polysaccharides used, cellobiose has emerged as the most promising for H2 evolution, achieving the highest amount of H2 (124 µmol) after 180 min reaction. This result suggests a correlation between the efficiency of scavenging holes and the number of hydroxyl groups in the electron donor's structure. Despite a slight decrease in H₂ evolution compared with the powdered catalysts, the use of immobilized photocatalyst exhibited remarkable stability in both ultrapure water and seawater, maintaining its performance across multiple reuse cycles. The photocatalytic system demonstrated remarkable efficiency for H₂ production, avoiding phases separation processes, promotes the transition to continuous flow reactors and preserve freshwater resources. |
| format | Article |
| id | doaj-art-dcc2475923514d458d47365e07b6e814 |
| institution | Kabale University |
| issn | 2666-8211 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Engineering Journal Advances |
| spelling | doaj-art-dcc2475923514d458d47365e07b6e8142025-02-03T04:17:02ZengElsevierChemical Engineering Journal Advances2666-82112025-03-0121100697Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalystsAna L. Machado0Ricardo A. Oliveira1Goran Dražić2Joana C. Lopes3Cláudia G. Silva4Joaquim L. Faria5Maria J. Sampaio6LSRE-LCM – Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalLSRE-LCM – Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalDepartment of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, Ljubljana, SloveniaLSRE-LCM – Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalLSRE-LCM – Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalLSRE-LCM – Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalLSRE-LCM – Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; Corresponding author.To address the challenges related with using powdered catalysts and freshwater in photocatalytic hydrogen (H2) production, this study explores the performance of carbon nitride-based catalyst immobilized on a 3D structure, employing seawater as a proton source. Methanol and saccharides such as cellobiose, fructose, glucose, saccharose and sorbitol were used as sacrificial agents to accelerate H2 production via photoreforming. The results using immobilized photocatalyst showed that, at similar molar concentrations, glucose reveals higher efficiency compared with methanol, achieving an amount of H2 evolution of 102 µmol after 180 min under visible light, compared to 45 µmol with methanol. Among the mono- and polysaccharides used, cellobiose has emerged as the most promising for H2 evolution, achieving the highest amount of H2 (124 µmol) after 180 min reaction. This result suggests a correlation between the efficiency of scavenging holes and the number of hydroxyl groups in the electron donor's structure. Despite a slight decrease in H₂ evolution compared with the powdered catalysts, the use of immobilized photocatalyst exhibited remarkable stability in both ultrapure water and seawater, maintaining its performance across multiple reuse cycles. The photocatalytic system demonstrated remarkable efficiency for H₂ production, avoiding phases separation processes, promotes the transition to continuous flow reactors and preserve freshwater resources.http://www.sciencedirect.com/science/article/pii/S2666821124001145PhotocatalysisVisible-lightSaccharides3D-structureH2 evolution |
| spellingShingle | Ana L. Machado Ricardo A. Oliveira Goran Dražić Joana C. Lopes Cláudia G. Silva Joaquim L. Faria Maria J. Sampaio Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts Chemical Engineering Journal Advances Photocatalysis Visible-light Saccharides 3D-structure H2 evolution |
| title | Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts |
| title_full | Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts |
| title_fullStr | Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts |
| title_full_unstemmed | Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts |
| title_short | Producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts |
| title_sort | producing hydrogen from biomass and seawater using immobilized carbon nitride photocatalysts |
| topic | Photocatalysis Visible-light Saccharides 3D-structure H2 evolution |
| url | http://www.sciencedirect.com/science/article/pii/S2666821124001145 |
| work_keys_str_mv | AT analmachado producinghydrogenfrombiomassandseawaterusingimmobilizedcarbonnitridephotocatalysts AT ricardoaoliveira producinghydrogenfrombiomassandseawaterusingimmobilizedcarbonnitridephotocatalysts AT gorandrazic producinghydrogenfrombiomassandseawaterusingimmobilizedcarbonnitridephotocatalysts AT joanaclopes producinghydrogenfrombiomassandseawaterusingimmobilizedcarbonnitridephotocatalysts AT claudiagsilva producinghydrogenfrombiomassandseawaterusingimmobilizedcarbonnitridephotocatalysts AT joaquimlfaria producinghydrogenfrombiomassandseawaterusingimmobilizedcarbonnitridephotocatalysts AT mariajsampaio producinghydrogenfrombiomassandseawaterusingimmobilizedcarbonnitridephotocatalysts |