Imidazole substituted Zinc(ii) phthalocyanines for co-catalyst-free photoelectrochemical and photocatalytic hydrogen evolution: influence of the anchoring group

Yüzer A. C., Genc E., Kurtay G., Yanalak G., Aslan E., Harputlu E., ...Daha Fazla

Chemical Communications, cilt.57, sa.73, ss.9196-9199, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 57 Sayı: 73
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1039/d1cc03880j
  • Dergi Adı: Chemical Communications
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, MEDLINE, DIALNET
  • Sayfa Sayıları: ss.9196-9199
  • Hacettepe Üniversitesi Adresli: Hayır

Özet

© The Royal Society of Chemistry 2021.Novel zinc phthalocyanine derivatives, ZnPc-1 and ZnPc-2, consisting of one and four imidazole units, respectively, have been synthesized and utilized as panchromatic photosensitizers for photocatalytic and photoelectrochemical H2evolution. The effect of the imidazole-anchoring group on the photocatalytic H2production has been compared with ZnPc-3, which possesses a carboxylic acid unit as the anchoring group. ZnPc-1/TiO2shows the best photoactivity with the highest H2evolution rate of 0.4006 mmol g−1h−1, which is much higher than that of ZnPc-2/TiO2and ZnPc-3/TiO2(0.3319 mmol g−1h−1and 0.3555 mmol g−1h−1, respectively). After 20 h of irradiation, ZnPc-1 produces an H2production rate of 3.4187 mmol g−1with a turnover number (TON) of 14863 and a solar-to-hydrogen energy (STH) conversion efficiency of 1.03%, without using a co-catalyst.