Iodide ions as invisible chemical scissors tailoring carbon nitride for highly efficient photocatalytic H<sub>2</sub>O<sub>2</sub> evolution

Yu, Daren; Gong, Weiran; Zhi, Xinyu; Wu, Yang; Gao, Xin; Che, Huinan; Ao, Yanhui

doi:10.1039/d2cy01135b

Cited by 5 publications

(2 citation statements)

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“…Clearly, the NiS/BiVO 4 photocatalyst under light irradiation produces more ˙O 2 − than BiVO 4 , which indicates that the reductive activity of O 2 adsorbed on the NiS/BiVO 4 surface obtains a remarkably higher enhancement than that of BiVO 4 . 46,47 Moreover, the rapid depletion of photogenerated holes from BiVO 4 also contributes to the O 2 reduction to H 2 O 2 . Thus, photocatalytic degradation experiment is further used to verify that the selectively modified NiS cocatalyst can improve the interfacial catalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO₄ for photocatalytic H₂O₂ generation

Shi

Wang

et al. 2023

Catal. Sci. Technol.

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Section: Resultsmentioning

confidence: 99%

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO₄ for photocatalytic H₂O₂ generation

Shi

Wang

et al. 2023

Catal. Sci. Technol.

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“…Generally, organic electron donors (such as isopropanol, ethanol) are widely introduced into photocatalytic system to enhance the production of H 2 O 2 . [10,32,33] Oxalic acid (OA) is regarded as an eco-friendly electron donor, which can be activated by photocatalysts to produce H 2 O 2 , namely, (COO) 2 − +2 H + + O 2 → H 2 O 2 + CO 2 . [34] Meanwhile, the existence of peroxocarbonates can facilitate the desorption of H 2 O 2 from the surface of catalysts.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh Performance H₂O₂ Generation by Single‐Atom Fe Catalysts with N/O Bidentate Ligand via Oxalic Acid and Oxygen Molecules Activation

Zhang

Lai

et al. 2023

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Single‐atom catalysts (SACs) for photocatalytic hydrogen peroxide (H2O2) generation are researched but it is still challenging to obtain high H2O2 yields. Herein, graphite carbon nitride (FeSA/CN) confined single Fe atoms with N/O coordination is prepared, and FeSA/CN shows high H2O2 production via oxalic acid and O2 activation. Under visible light illumination, the concentration of H2O2 generated by FeSA/CN can achieve 40.19 mM g−1 h−1, which is 10.44 times higher than that of g‐C3N4. The enhanced H2O2 generation can be attributed to the formation of metal‐organic complexes and rapid electron transfer. Moreover, the O2 activation of photocatalysts is revealed by 3,3′,5,5′‐tetramethylbenzidine oxidation. The results display that the O2 activation capacity of FeSA/CN is higher than that of g‐C3N4, which facilitates the formation of H2O2. Finally, density functional theory calculation demonstrates that O2 is chemically adsorbed on Fe atomic sites. The adsorption energy of O2 is enhanced from −0.555 to −1.497 eV, and the bond length of OO is extended from 1.235 to 1.292 Å. These results exhibit that the confinement of single Fe atoms can promote O2 adsorption and activation. Finally, the photocatalytic mechanism is elaborated, which provides a deep understanding for SACs‐catalyzed H2O2 generation.

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Graphitic Carbon Nitride Based Materials Towards Photoproduction of H₂O₂

et al. 2023

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Hydrogen peroxide (H 2 O 2 ) can be considered as one of the world's indispensable chemicals. However, the synthetic process can prompt several severe environmental and human health issues. However, solar H 2 O 2 production may provide opportunities to mitigate such issues. Graphitic carbon nitride (g-C 3 N 4 ) has emerged as one promising material for photocatalytic applications due to its unique properties. Although tremendous efforts in engineering g-C 3 N 4 have been proposed to improve catalytic results, the materials obtained still have some issues.Additionally, the mechanisms behind the production of H 2 O 2 by using such materials are not yet fully understood. Herein, we conducted a literature survey reviewing the production of H 2 O 2 using g-C 3 N 4 -based materials. The essential aspects of and current challenges in photocatalytic H 2 O 2 generation are discussed, which may provide insight for researchers to overcome barriers and develop sustainable methods for H 2 O 2 production.

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Iodide ions as invisible chemical scissors tailoring carbon nitride for highly efficient photocatalytic H₂O₂ evolution

Abstract: Graphite carbon nitride (g-C3N4) being a non-metallic oxygen reduction reaction (ORR) photocatalyst has attracted much attention in the generation of H2O2. Nevertheless, the weak O2 adsorption capacity, inefficiency separation efficiency...

Cited by 5 publications

References 52 publications

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO₄ for photocatalytic H₂O₂ generation

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO₄ for photocatalytic H₂O₂ generation

Ultrahigh Performance H₂O₂ Generation by Single‐Atom Fe Catalysts with N/O Bidentate Ligand via Oxalic Acid and Oxygen Molecules Activation

Graphitic Carbon Nitride Based Materials Towards Photoproduction of H₂O₂

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Iodide ions as invisible chemical scissors tailoring carbon nitride for highly efficient photocatalytic H2O2 evolution

Abstract: Graphite carbon nitride (g-C3N4) being a non-metallic oxygen reduction reaction (ORR) photocatalyst has attracted much attention in the generation of H2O2. Nevertheless, the weak O2 adsorption capacity, inefficiency separation efficiency...

Cited by 5 publications

References 52 publications

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO4 for photocatalytic H2O2 generation

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO4 for photocatalytic H2O2 generation

Ultrahigh Performance H2O2 Generation by Single‐Atom Fe Catalysts with N/O Bidentate Ligand via Oxalic Acid and Oxygen Molecules Activation

Graphitic Carbon Nitride Based Materials Towards Photoproduction of H2O2

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Iodide ions as invisible chemical scissors tailoring carbon nitride for highly efficient photocatalytic H₂O₂ evolution

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO₄ for photocatalytic H₂O₂ generation

Accurate modulation of NiS cocatalysts on the photoelectron transfer sites of BiVO₄ for photocatalytic H₂O₂ generation

Ultrahigh Performance H₂O₂ Generation by Single‐Atom Fe Catalysts with N/O Bidentate Ligand via Oxalic Acid and Oxygen Molecules Activation

Graphitic Carbon Nitride Based Materials Towards Photoproduction of H₂O₂