In-situ fabrication of supported iron oxides from synthetic acid mine drainage: High catalytic activities and good stabilities towards electro-Fenton reaction

Manipulate an air–cathode fuel cell toward recovering highly active heterogeneous electro-Fenton catalyst from the Fe(II) in acid mine drainage

“…The loading of Fe(II) oxides on the GF was conducted in an aircathode fuel cell with single-chamber architecture (Sun et al, 2015). A 3 Â 3 cm 2 GF (2 mm in thickness) was located in the anodic chamber as the anode, and the cathode was a 2 Â 2 cm 2 carbon paper (090S, wet-proofed, Toray Industries Inc., Japan) coated with a 0.05 mg cm À2 platinum catalyst.…”

“…In the fuel cell, the Fe(II) at the anode is indirectly oxidized by the air at the cathode, producing a ferric (Fe(III)) oxide precipitate on the carbon electrode (Cheng et al, 2011;Sun et al, 2015). After exposed to calcinations, the carbon supported ferric oxide is transformed to Fe 3 O 4 /carbon composite which demonstrates catalytic activity toward the electro-Fenton reaction.…”

“…A novel air-cathode fuel cell approach was recently proposed to fabricate Fe 3 O 4 nano-particles from Fe(II) in the AMD (Sun et al, 2015). In the fuel cell, the Fe(II) at the anode is indirectly oxidized by the air at the cathode, producing a ferric (Fe(III)) oxide precipitate on the carbon electrode (Cheng et al, 2011;Sun et al, 2015).…”

Preparation and electrochemical property of TiO2/Nano-graphite composite anode for electro-catalytic degradation of ceftriaxone sodium

“…Of which, advanced oxidation processes (AOPs), taking advantage of the characters of effective catalyzing and oxidating the organic contaminant in the wastewater, stand out among numerous methods. There are some kinds of AOPs have been researched, such as photo-catalysis [5], photoelectro-catalysis [6,7] and electrocatalysis [8], of which electro-catalysis has the characteristics of low requirement to the equipments and reaction condition, simple operation, and the generation of some high active species like hydrogen peroxide (H 2 O 2 ) [9,10] and hydroxyl radical ( OH) [11] produced on the surface of the electrodes to degrade organic contaminants effectively. However, most advanced electrochemical oxidation process (AEOP), one of new AOPs, treated high concentration organic wastewater [12][13][14][15], their high current and high voltage will consume more energy sources, what's more, in the condition of high current density, many by-products will be generated when degrading the organic wastewater [16][17][18].…”

On the mechanism of oxidative degradation of rhodamine B over LaFeO3 catalysts supported on silica materials: Role of support

“…Indeed, many efforts on improving the surface area and/or the adsorption capacity of solid Fenton-like catalyst for oxidative degradation of organic dyes have been made over the years and interesting achievements have been obtained [6][7][8][9][10].…”