Biopolymer supported silicon carbide for enhanced photocatalytic hydrogen evolution reaction

Genc M. T., Sarilmaz A., Aslan E., ÖZEL F., Potrich C., Ersoz M., ...Daha Fazla

Chemical Engineering Science, cilt.316, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 316
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.ces.2025.122019
  • Dergi Adı: Chemical Engineering Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Pollution Abstracts, zbMATH, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: Biopolymer, Dye sensitized, Hydrogen evolution, Metal free catalyst, Photodeposition, Silicon carbide
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

In photocatalytic hydrogen evolution reactions, SiC catalyst was templated with biopolymers (cellulose, chitin, chitosan, sodium alginate) in a reaction medium containing eosin Y dye and triethanolamine. Biopolymers act as biotemplate and mediator, provide easy dispersion, hydrophilicity, morphological transformation and adhesion to semiconductor with the help of functional groups. The photo-deposition of MoSx and Pt in aqueous solution is performed on biopolymer-SiC nanocomposite to obtain biopolymer-SiC/MoSx and biopolymer-SiC/Pt by reducing (NH4)2MoS4 and H2PtCl6·6H2O, respectively. Sodium alginate-SiC/MoSx showed highest photocatalytic activity which is approximately 158-, 34- and 13 times higher than bare SiC, bare sodium alginate and sodium alginate-SiC catalyst, respectively. Moreover, the solar-to-hydrogen efficiencies are achieved about 19.83% under solar light irradiation for the sodium alginate-SiC/MoSx catalyst. In addition, photo-deposited MoSx and Pt on biopolymer-SiC nanocomposite resulted in enhanced photocatalytic activity and stability because of increased active sites and enhanced electron transfer ability due to the co-catalyst effect.