Strategies and challenges on selective electrochemical hydrogen peroxide production: Catalyst and reaction medium design

Dynamic gas‐diffusion electrodes for oxygen electroreduction to hydrogen peroxide

“…Figure 3A). As shown in Figure 3B, the electron transfer number of ORR is closer to 2 (in the range of 2.6–2) in a wide potential range (0–0.6 V vs. RHE) for Ag‐TCNQ sample 42 . Therefore, a two‐electron‐transfer pathway to generate H 2 O 2 from ORR is determined 43 .…”

Ordered mesoporous carbon encapsulated linear poly(ionic liquid)s enabling synergy effect of surface groups and ionic moieties for CO2 fixation under mild conditions

“…For additional comparison, PIL-90 was impregnated on commercial activated carbon (AC) and a disordered carbon (LOMC) (Table S1, entries [13][14][15][16]. AC is an amorphous carbon with a large surface area of 1526 m 2 g −1 and a pore volume of 0.52 cm 3 g −1 (Fig.…”

“…One of the most promising approaches is the cycloaddition reaction between CO 2 and three-member ring organic compounds such as aziridines and epoxides [12][13][14]. This pathway has the features of environmentally friendly and 100% atom-efficiency [5,8,15], producing a series of valuable chemicals like cyclic carbonates as solvents, polymer monomers, and organic intermediates [16][17][18][19][20]. To convert CO 2 molecules with inherent thermodynamic stability and kinetic inertness under mild condition [12,[21][22][23] encouraged the development of various homogeneous and heterogeneous catalysts including metal-porphyrin [6,24], metal complexes [25,26], metal-organic frameworks (MOFs) [27][28][29], covalent organic frameworks (COFs) [30,31], ionic liquids (ILs) [32,33], and porous organic polymers (POPs) [34][35][36], etc.…”

“…This strategy is feasible and versatile for IL solidification because it does not rely on the designation of polymerizable IL monomer for the pore formation during the polymerization process. Many ordered porous materials with the large surface area such as zeolites, MOFs, COFs, and mesoporous silica have been explored to immobilize ILs and PILs for the preparation of heterogeneous IL-derived catalysts [16,27,28,50]. Carbon materials with the features such as large surface area, tunable porosity, and abundant surface functional groups have been explored as the supports and catalysts in the CO 2 cycloadditions [51][52][53][54][55][56][57].…”

Recycling and Upgrading Utilization of Polymer Plastics†

“…Electrocatalysis, as a clean and sustainable alternative to chemical degradation, is powered by solar, wind or water power, [ 82‐84 ] which is usually carried out in an aqueous solution under ambient temperature and pressure. [ 85‐87 ] Electrocatalysis provides a sustainable and attractive new strategy to generate clean energy at the cathode and value‐added oxides from organic compounds at the anode (such as simple alcohols and valuable carbonyl chemicals). [ 73,88‐91 ] Nevertheless, the different solubilities of polymer materials limit the application of electrocatalytic technology in plastic depolymerization.…”