Facet-dependent intermediate formation and reaction mechanism of photocatalytic removing hydrophobic anthracene under simulated solar irradiation
By Qi, Weixiao; An, Xiaoqiang; Zhang, Fan; Liu, Huijuan; Qu, Jiuhui
Published in Applied Catalysis B: Environmental
NULL
2017
Abstract
Abstract The intrinsic impact of inherent structures of facet photocatalysts on the reaction pathways and mechanism is largely unknown, although it is of scientific and technological importance for the research of water remediation. In this paper, hydrophobic anthracene (Ant) and TiO2 with dominant 001, 010 and 101 facets were selected as typical examples, to demonstrate the significant influence of exposed facets on the radical formation and intermediate production. The results showed that 101 faceted TiO2 showed superior catalytic activity than 001 and 010 faceted TiO2 during the degradation of Ant under simulated solar irradiation, while 001 faceted TiO2 resulted in the largest production of anthraquione (AQ) intermediates. A fundamental study indicated that holes and oxygen played the important roles in the first step of catalytic oxidation of Ant on 001 and 010 faceted TiO2, while {OH} radical was the main species to degrade AQ. The electron spin resonance spectroscopy measurements showed that their different abilities for the in-situ formation of {OH} radicals led to the differences in the intermediate products and reaction pathways. This work provides new insights into the development of high-efficiency photocatalysts for pollutant elimination through crystal-facet tailoring.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.