|
|||||
|
|
Designing and fabrication of phenothiazine and carbazole based sensitizers for photocatalytic water splitting application |
|
| Authors: | Nadavala Siva Kumar Abhishek Dhar Ahmed A Ibrahim Rohit L Vekariya Poonam Bhadja |
| Affiliation: | 1. Department of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia;2. Department of Chemical Engineering, Raja Bazar Science College, University of Calcutta, Kolkata 700009, India;3. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD, Shanghai 200240, PR China;4. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;5. Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam |
| Abstract: | In the present work, we have designed and synthesized two carbazole and phenothiazine donor moieties based metal-free organic sensitizers and their codes are WCBZ2 and WPTZ2 respectively. These sensitizers have been used for photocatalytic hydrogen (H2) evaluation application. The sensitizers exhibit good light absorption capability and electrochemical properties as well. For increasing water splitting capacity, incorporate platinum salt on TiO2 semiconductor photoanode was performed and compared hydrogen evolution with pure TiO2 photoanode. We have also studied the influence of the sensitizer's concentration and the effect of pH of the medium was explored. Using a theoretical measurement optimized both the synthesized dimer dyes structure geometry and the calculated their HOMO-LUMO energy level. Here also reported optimized pH and concentration of sensitizers in the reaction medium and found that the high hydrogen generation efficiency from water splitting is 138.3 μmol (348 TONs) by the WPTZ2 dye. |
| Keywords: | Water splitting Photocatalytic activity Synthesis of sensitizer Hydrogen evolution |
| 本文献已被 ScienceDirect 等数据库收录！ | |