Sonication strategy for anchoring single metal atom oxides (W, Cu, Co) on CeO2-rGO for boosting electrocatalytic oxygen evolution reaction

Selvakumar, Karuppaiah; Oh, Tae Hwan; Wang, Yueshuai; Sadhasivam, Thangarasu; Sadhasivam, Subramani; Swaminathan, Meenakshisundaram

doi:10.1016/j.chemosphere.2023.140012

Cited by 6 publications

(1 citation statement)

References 57 publications

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“…Single-atom catalysts (SACs) have recently gained prominence as a frontier in catalysis due to their unique advantages, including exceptional activity and selectivity. − SACs bridge the gap between heterogeneous and homogeneous catalysis, harnessing the atom efficiency of metals to enhance the utilization of noble metals. They exhibit low coordination environments stemming from unsaturated bonding, facilitating efficient charge transfer.…”

Section: Introductionmentioning

confidence: 99%

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO₂ for Photocatalytic H₂ Evolution

Toukabri,

Hejazi,

Shahsanaei

et al. 2024

Langmuir

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Single-atom (SA) decoration has emerged as a frontier in catalysis due to its unique characteristics. Recently, decorated Pt single atoms on titania have shown promise in photocatalytic hydrogen evolution. In this work, we demonstrate that Pt SAs can spontaneously deposit on the surface, driven by electrostatic forces; the key is to determine the golden pH and surface potential. We conducted a comprehensive investigation into the influence of the pH of the deposition precursor on the spontaneous adsorption of Pt SAs onto TiO 2 nanosheets (TiNSs). We introduced a straightforward pH-dependent and chargedependent strategy for the solid electrostatic anchoring of Pt SAs on TiO 2 . Furthermore, we established that the level of Pt loading can be controlled by adjusting the precursor pH. X-ray photoelectron spectroscopy (XPS) and high-angle annular dark-field imaging scanning transmission electron microscopy (HAADF-STEM) were used to evaluate the Pt SA-decorated samples. Photocatalytic hydrogen production activity was assessed under ultraviolet (UV) (365 nm) irradiation. Notably, we found that at a pH of 8, slightly below the measured point of zero charge (PZC), a unique mixture of Pt clusters and single atoms was deposited on the surface of TiNSs. This unique composition significantly improved hydrogen production, resulting in ∼3.7 mL of hydrogen generated after 8 h of UV exposure by only 10 mg of the Pt-decorated TiNS (with Pt loadings of 0.12 at. %), which is ∼300 times higher than the undecorated TiNS.

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Section: Introductionmentioning

confidence: 99%

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO₂ for Photocatalytic H₂ Evolution

Toukabri,

Hejazi,

Shahsanaei

et al. 2024

Langmuir

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Dysprosium oxide nanoparticle decorated on reduced graphene oxide sheets: Active and sustainable electrocatalyst for OER

Khan,

Javed,

Alahmari

et al. 2024

Ceramics International

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Enhancing sodium percarbonate catalytic wet peroxide oxidation with artificial intelligence-optimized swirl flow: Ni single atom sites on carbon nanotubes for improved reactivity and silicon resistance

Yao,

Zhang,

Gao

et al. 2024

Chemosphere

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Sonication strategy for anchoring single metal atom oxides (W, Cu, Co) on CeO2-rGO for boosting electrocatalytic oxygen evolution reaction

Cited by 6 publications

References 57 publications

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO₂ for Photocatalytic H₂ Evolution

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO₂ for Photocatalytic H₂ Evolution

Dysprosium oxide nanoparticle decorated on reduced graphene oxide sheets: Active and sustainable electrocatalyst for OER

Enhancing sodium percarbonate catalytic wet peroxide oxidation with artificial intelligence-optimized swirl flow: Ni single atom sites on carbon nanotubes for improved reactivity and silicon resistance

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Sonication strategy for anchoring single metal atom oxides (W, Cu, Co) on CeO2-rGO for boosting electrocatalytic oxygen evolution reaction

Cited by 6 publications

References 57 publications

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO2 for Photocatalytic H2 Evolution

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO2 for Photocatalytic H2 Evolution

Dysprosium oxide nanoparticle decorated on reduced graphene oxide sheets: Active and sustainable electrocatalyst for OER

Enhancing sodium percarbonate catalytic wet peroxide oxidation with artificial intelligence-optimized swirl flow: Ni single atom sites on carbon nanotubes for improved reactivity and silicon resistance

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Product

Resources

About

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO₂ for Photocatalytic H₂ Evolution

Spontaneous Deposition of Single Platinum Atoms on Anatase TiO₂ for Photocatalytic H₂ Evolution