Photocatalytic H₂ Production from Water by Metal‐free Dye‐sensitized TiO₂ Semiconductors: The Role and Development Process of Organic Sensitizers

Abstract

Dr. Jian-Feng Huang obtained his Ph.D. degree from School of Chemistry, Sun Yat-sen University in 2017. He is currently an associate researcher in Prof. Jun-Min Liu's group. His research interests mainly focus on the design and application of semiconductor based functional materials for photocatalysis. Yang Lei obtained his M.S. degree at Qingdao University of Science and Technology in 2018. He is currently a Ph.D. student under the supervision of Prof. Jun-Min Liu at School of Materials Science and Engineering, Sun Yatsen University. His research interests focus on carbon nitride based materials for photocatalytic hydrogen production and CO 2 reduction. Teng Luo obtained his B.E. degree at Donghua University in 2019. He is currently a M.E. student under the supervision of Prof. Jun-Min Liu at School of Materials Science and Engineering, Sun Yat-sen University. His research interests focus on dye-sensitized water-splitting cells.

Semi‐Synthetic Chlorophyll‐Carotenoid Dyad for Dye‐Sensitized Photocatalytic Hydrogen Evolution

“…[14][15][16][17] A recent trend for sensitizing Pt/TiO 2 is the use of metal-free organic dyes with strong absorptivity and panchromatic sensitization properties. [18][19][20] For example, perylene-quinoxaline, [21] porphyrin-BODIPY, [22] phenothiazine-BODIPY, [23] thienopyrazine-triarylamine, [24] or multicarbazole [25] have been developed as covalently-linked multichromophore sensitizers for Pt/TiO 2 -based catalysts to realize efficient light absorption. In this context, we recently reported a dyad sensitizer of chlorophyll derivative connected with indoline dye for panchromatic PHE.…”

Photocatalytic Degradation of Organic Dyes with Magnetically Separable PANI/Fe3O4 Composite under Both UV and Visible‐light Irradiation

“…[4] Various semiconductor photocatalysts such as doped CdS, [5] TiO 2 , [6] BiOBr, [7] CdO, [8] Fe 2 O 3 , [9] Cu 2 O, [10] NiO, [11] WO 3 , [12] SnO [13] and ZnO [14] have been utilized to clean hazardous organic dyes from wastewater. [15] It has been noted that those semiconductors were activated mostly under ultraviolet-light irradiation, which requires the high energy-consuming UV light source (only include 4 % of sunlight), restricting the use of sunlight light sources and generating greater costs of purification. Thus, the development of novel photocatalysts, which are activated under both UV and visible light irradiation, is highly demanded.…”

Dye–catalyst dyads for photoelectrochemical water oxidation based on metal-free sensitizers

“…[14][15][16] The absence in the literature of organic dyes in dye-WOC dyads for photoanodes is surprising, considering the emerging role of metal-free dyes in the elds of solar energy conversion. 8,[17][18][19] Only two examples of dyads containing organic dyes have been so far reported, but both referred to photoactive cathodes. 20,21 We thus decided to investigate a dyad where a metal-free sensitizer is covalently bonded to a typical WOC, oen used as a catalyst benchmark (a derivative of [Ru(bda)(pic) 2 ] (bda ¼ 2,2 0 -bipyridine-6,6 0 -dicarboxylate; pic ¼ 4-picoline)).…”