Photocatalytic hydrogen peroxide evolution: What is the most effective strategy?

Point-to-faceZ-scheme junction Cd0.6Zn0.4S/g-C3N4with a robust internal electric field for high-efficiency H2O2production

“…It's noted that the CB potentials of UCN and Cd 0.6 Zn 0.4 S are more negative than the reduction potential of O 2 /˙O 2 − (−0.33 V vs. NHE) and O 2 /H 2 O 2 (0.68 V vs. NHE), which means that the reduction reaction potential satisfies the formation of H 2 O 2 . 2…”

“…Hydrogen peroxide (H 2 O 2 ) is an environmentally friendly oxidant extensively employed in various elds, such as environmental remediation, medical sterilization and chemical synthesis, and is also a potential clean fuel for jet cars and rockets. 1,2 At present, the well-established anthraquinone process is suitable for large-scale H 2 O 2 manufacturing, but it involves extraordinarily complicated hydrogenation and oxidation reactions and usage of a lot of organic reagents, resulting in the drawbacks of high energy consumption, great safety risks and serious pollution. 3,4 The semiconductor photocatalytic H 2 O 2 production technology based on water, oxygen and solar energy is a safe, eco-friendly and energy-efficient approach, which possesses a tremendous development foreground.…”

Highly Efficient FeIII‐initiated Self‐cycled Fenton System in Piezo‐catalytic Process for Organic Pollutants Degradation

“…Chemie and Figure 2a-c), reflecting that H 2 O 2 is not generated from the ORR route (O 2 + 2e À + 2H + !H 2 O 2 (0.68 V vs. NHE). [24] The almost completely suppressed H 2 O 2 production in the piezo-holes trapping experiment (Figure 2a and Figure S11c) further proves that the hole-induced WORÀ H 2 O 2 (2H 2 O + 2 h + !H 2 O 2 + 2H + (1.76 V vs. NHE) [25] is the predominant route for the BIO system. Density functional theory (DFT) calculations unveil the mechanism of efficient H 2 O activation on the BIO surface (Text S1.6).…”

Highly Efficient FeIII‐initiated Self‐cycled Fenton System in Piezo‐catalytic Process for Organic Pollutants Degradation

“…and Figure 2a-c), reflecting that H 2 O 2 is not generated from the ORR route (O 2 + 2e À + 2H + !H 2 O 2 (0.68 V vs. NHE). [24] The almost completely suppressed H 2 O 2 production in the piezo-holes trapping experiment (Figure 2a and Figure S11c) further proves that the hole-induced WORÀ H 2 O 2 (2H 2 O + 2 h + !H 2 O 2 + 2H + (1.76 V vs. NHE) [25] is the predominant route for the BIO system. Density functional theory (DFT) calculations unveil the mechanism of efficient H 2 O activation on the BIO surface (Text S1.6).…”