Solar-to-hydrogen peroxide conversion of photocatalytic carbon dots with anthraquinone: Unveiling the dual role of surface functionalities

Visible-Light Activation of a Dissolved Organic Matter–TiO2 Complex Mediated via Ligand-to-Metal Charge Transfer

“…Indeed, when we compared the rates of H 2 O 2 formation and decomposition for HA/TiO 2 and pyrocatechol/TiO 2 , the formation rate constants were found to be similar to each other, but pyrocatechol/TiO 2 exhibited a lower decomposition rate constant compared to that of HA/TiO 2 (Figure d). These results agree with our previous findings that surface functional groups played a different role in enhancing the production of H 2 O 2 via photocatalysis . Note that although we examine the role of pyrocatechol and other ligands in LMCT sensitization, they represent only a small fraction of the total HA functional groups.…”

“…These results agree with our previous findings that surface functional groups played a different role in enhancing the production of H 2 O 2 via photocatalysis. 41 Note that although we examine the role of pyrocatechol and other ligands in LMCT sensitization, they represent only a small fraction of the total HA functional groups.…”

Graphene-Encapsulated CdS as a High-Performance Photocatalyst for H2O2 Production from Pure Water

“…Thus, the recombination of carrier pairs on the CdS surface and body is greatly inhibited. The electrons then continue to transfer to the surface of AQS, converting it to semi-quinone (•SQ – ), which then reacts with adsorbed molecular oxygen to form the superoxide radical •O 2 – , followed by H 2 O 2 formation upon addition of surrounding protons . The mechanism shows that the ORR catalyzed by AQS is accelerated, hence the generation of H 2 O 2 is significantly enhanced.…”

Efficient molecular oxygen utilization of micelle-based BiOCl for enhanced in situ H2O2 production induced photocatalytic removal of antibiotics

“…[12][13][14][15] Currently, many photocatalytic materials have been used for the photocatalytic oxygen reduction reaction (ORR) to produce H 2 O 2 and degrade antibiotics. [16][17][18][19][20][21][22][23] Among the investigated photocatalysts, BiOCl is an important semiconductor with the appropriate energy band structure (3.2-3.7 eV) and particular lamellar structure. [24][25][26] However, there is inadequate surface adsorption sites with pure BiOCl, and its relatively thick lamellae hinder electron transfer, resulting in poor photocatalytic H 2 O 2 production activity.…”