Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 235, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2019.116232
Keywords
Photoelectrocatalytic system; Triclosan; Mechanism; Toxicity
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Funding
- National Natural Science Foundation of China [51508254, 51978319]
- Fundamental Research Funds for the Central Universities [lzujbky-2017-it98]
- National College student innovation and Entrepreneurship training program of Lanzhou University
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lake, Chinese Academy of Sciences
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Promoting the separation efficiency of photogenerated charges plays the crucial part in photoelectrocatalytic (PEC) process, here a high efficient PEC system based on dual-Pd/TNAs photoelectrodes was designed and constructed, in which 99.77% of triclosan could be eliminated with a pH 8, applied voltage 3.0 V and electrolyte concentration 1.0 mol.L-1. Afterwards, the high PEC activity and stability of the PEC system were evaluated by photoelectrochemical (PECH) and hydroxyl radicals ((OH)-O-center dot) measurements, as well as recycling experiments. Furthermore, the changes of toxicity, possible degradation pathway and mechanism of PEC system were systematically studied. This study provided an innovative dual-photoelectrodes PEC reaction to eliminate refractory pollutants in water and waste water.
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