Metal Modified TiO2 Embedded Chitosan/Polyvinyl Alcohol Membranes for Efficient Photocatalytic Hydrogen Production
Journal of Polymers and the Environment, cilt.34, sa.11, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 34 Sayı: 11
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s10924-026-04004-0
- Dergi Adı: Journal of Polymers and the Environment
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Chemical Abstracts Core, Chimica, Compendex, Environment Index, Geobase, Greenfile, Natural Science Collection (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Earth, Atmospheric, & Aquatic Science Collection (ProQuest), Materials Science & Engineering Collection (ProQuest), Pharma Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: Chitosan/PVA membrane, Hydrogen production, Metal-modified TiO2, Photocatalysis, Photoelectrocatalysis
- Marmara Üniversitesi Adresli: Evet
Özet
In order to tune the light absorption, M-TiO2 (M = Mo, V or W) photocatalysts were prepared by doping with Mo, V and W metal nanoparticles. M-TiO2 nanoparticles were incorporated into chitosan/polyvinyl alcohol (CS/PVA) membranes to prepare M-TiO2@CS/PVA films, which were then used in photocatalytic hydrogen evolution reactions. This strategy aimed for not only the facilitation of the recovery and reuse of photocatalysts but also, enhancement of the structural stability of M-TiO2, prevent agglomeration and photocatalyst loss in the flow system, and enabling easy washing and repeated use, which are the major challenges related to photocatalytic processes. The success of the M-TiO2@CS/PVA film formation strategy was confirmed by comparison of the photocatalytic hydrogen evolution rate (PCHER) M-TiO2 powders and M-TiO₂@CS/PVA films. The photocatalytic experiments were performed in the Na2S/Na2SO3 aqueous solution under simulated sunlight (1000 W m− 2). Among all the prepared M-TiO2 photocatalysts, Mo-TiO2 exhibited the best performance with a PCHER of 1.06 mmol h−1g− 1. Approximately similar PCHER performance (0.92 mmol h− 1 g− 1) was observed with Mo-TiO2@CS/PVA films. Additionally, the recyclability and stability of the photocatalyst was enhanced in consecutive test cycles and the Mo-TiO2@CS/PVA films were easily removed from the electrolyte without any loss of catalyst. These results demonstrated the synergistic effect of transition metal modifying to TiO2 and membrane immobilization toward photocatalytic and photoelectrochemical water splitting. In particular, the Mo-TiO2@CS/PVA films exhibited excellent potential as a visible-light-driven and recyclable material for sustainable hydrogen production.