AQ-coupled few-layered g-C3N4 nanoplates obtained by one-step mechanochemical treatment for efficient visible-light photocatalytic H2O2 production

Solar‐to‐H2O2 Energy Conversion by the Photothermal Effect of a Polymeric Photocatalyst via a Two‐Channel Pathway

“…The arc radius on the EIS Nyquist plot of RF appeared smaller with the rising temperature, implying a faster surface charges transfer at elevated reaction temperature (Figure 4b). [40] …”

“…The arc radius on the EIS Nyquist plot of RF appeared smaller with the rising temperature, implying a faster surface charges transfer at elevated reaction temperature (Figure 4b). [40] The increased reaction temperature from the photothermal effect contributed to the fast surface transfer of photoproduced electron-holes upon the catalysis. [41] Additionally, the bandgap of RF was calculated to be 1.6 eV according to the Tauc plots (inset of Figure S1f), and the Mott-Schottky plot of RF with a positive slope reflected its n-type semiconductor behavior (Figures 4c and S7).…”

Conjugated Organic Polymers with Anthraquinone Redox Centers for Efficient Photocatalytic Hydrogen Peroxide Production from Water and Oxygen under Visible Light Irradiation without Any Additives

“…33,58 Notably, AQTEE-COP shows a markedly higher DMPO-• O 2 − signal than NATEE-COP, suggesting the enhanced • O 2 − production capability of AQTEE-COP. Based on the experimental analysis and previous research studies, 38,39,59 a probable mechanism for photocatalytic H 2 O 2 production has been proposed. The CB levels of AQTEE-COP and NATEE-COP were estimated to be −0.40 and −0.57 V (vs NHE), while the valence band (VB) levels of AQTEE-COP and NATEE-COP were calculated to be 1.59 and 1.51 V (vs NHE), respectively, which indicate that O 2 reduction and H 2 O oxidation are thermodynamically possible (Figure 4c).…”

A carbon dot-based metal-free photocatalyst enables O2 to serve as both a reactant and electron sink for enhancing H2O2 photoproduction

“…[1][2][3][4] The process of photocatalysis is simple and convenient, which involves dispersing a photocatalyst in water and then yielding a product under light, which has good prospect for industrialization. 5,6 Hydrogen peroxide (H 2 O 2 ), as an alternative clean oxidant material, [7][8][9][10] has the advantages of convenient transportation and higher energy density than hydrogen, exhibiting wide application in synthesis, industry and other elds. [11][12][13][14][15] However, the major method for the synthesis of H 2 O 2 at present is anthraquinone oxidation, which has high energy consumption and the risk of explosion.…”