Standalone anion- and co-doped titanium dioxide nanotubes for photocatalytic and photoelectrochemical solar-to-fuel conversion

Nanoscale ◽  
2016 ◽  
Vol 8 (40) ◽  
pp. 17496-17505 ◽  
Author(s):  
Yuchen Ding ◽  
Prashant Nagpal
2021 ◽  
Vol 112 ◽  
pp. 103570
Author(s):  
Muhammad Mumtaz ◽  
M. Ahsan Mahmood ◽  
Sabih D. Khan ◽  
M. Aslam Zia ◽  
Amjid Iqbal ◽  
...  

2020 ◽  
Vol 16 ◽  
pp. 102948 ◽  
Author(s):  
Voranuch Thongpool ◽  
Akapong Phunpueok ◽  
Sarawut Jaiyen ◽  
Thitaya Sornkwan

2021 ◽  
Vol 891 ◽  
pp. 49-55
Author(s):  
Edgar Clyde R. Lopez ◽  
Nicole Elyse B. Saputil ◽  
Lance A. Loza ◽  
Fiona Fritz G. Camiguing ◽  
Marlon L. Mopon Jr. ◽  
...  

Photoelectrocatalysis has emerged as a promising technology to degrade recalcitrant pollutants such as textile dyes in wastewater completely. Titanium dioxide is typically used as a photocatalyst, but its wide bandgap constrains its use to the use of ultraviolet light. To extend its use to the visible-light region, we doped titanium dioxide nanotubes with iron and sulfur. We used them as a photoelectrode for the photoelectrocatalytic degradation of a model pollutant – phenol red. Response surface methodology using a Box-Behnken design of experiments was used to investigate the effects of initial dye concentration, applied potential, and dopant loading on phenol red degradation kinetics. Statistical analysis showed that our reduced cubic model adequately correlates these parameters. The fastest dye degradation rate was achieved at the optimized conditions: initial phenol red concentration = 5.0326 mg L-1, applied voltage = 29.9686 V, and dopant loading = 1.2244 wt.%. Complete degradation of phenol red may be achieved after 11.77 hours of treatment under the optimized conditions in a batch reactor. Our model's robustness enables it to be used for process modeling and a basis for designing scaled-up photoelectrocatalytic reactors.


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