Investigating the reactivity of TiOx and BDD anodes for electro-oxidation of organic pollutants by experimental and modeling approaches

Ma, Jing; Trellu, Clément; Skolotneva, Ekaterina; Oturan, Nihal; Oturan, Mehmet A.; Mareev, Semyon

doi:10.1016/j.electacta.2022.141513

Cited by 11 publications

(2 citation statements)

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“…Substoichiometric titanium oxide (Ti 4 O 7 ) is a recognized effective electrode material [ 12 , 14 , 15 ] due to its relatively high electrical conductivity, chemical stability, high OEP, and relatively low production cost [ 16 , 17 , 18 , 19 , 20 , 21 ]. Both plate and porous anodes can be made from it.…”

Section: Introductionmentioning

confidence: 99%

“…M + H 2 O → M(HO One of the main directions in AO development is the design of new promising "non-active" anode materials that increase the oxidation process efficiency and its stability and reduce energy consumption. Substoichiometric titanium oxide (Ti 4 O 7 ) is a recognized effective electrode material [12,14,15] due to its relatively high electrical conductivity, chemical stability, high OEP, and relatively low production cost [16][17][18][19][20][21]. Both plate and porous anodes can be made from it.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Oxidation of Organic Pollutants in Aqueous Solution Using a Ti4O7 Particle Anode

Kislyi,

Moroz,

Guliaeva

et al. 2023

Membranes

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Anodes based on substoichiometric titanium oxide (Ti4O7) are among the most effective for the anodic oxidation of organic pollutants in aqueous solutions. Such electrodes can be made in the form of semipermeable porous structures called reactive electrochemical membranes (REMs). Recent work has shown that REMs with large pore sizes (0.5–2 mm) are highly efficient (comparable or superior to boron-doped diamond (BDD) anodes) and can be used to oxidize a wide range of contaminants. In this work, for the first time, a Ti4O7 particle anode (with a granule size of 1–3 mm and forming pores of 0.2–1 mm) was used for the oxidation of benzoic, maleic and oxalic acids and hydroquinone in aqueous solutions with an initial COD of 600 mg/L. The results demonstrated that a high instantaneous current efficiency (ICE) of about 40% and a high removal degree of more than 99% can be achieved. The Ti4O7 anode showed good stability after 108 operating hours at 36 mA/cm2.

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