High activity and excellent durability of oxygen-vacancy-rich ruthenium manganese oxide solid-solution nanowires for the oxygen evolution reaction in acidic media

Zhu, Heng; Wang, Yongjie; Jiang, Zhongqing; Deng, Binglu; Jiang, Zhong-Jie

doi:10.1039/d3ta03252c

Cited by 9 publications

(2 citation statements)

References 36 publications

(58 reference statements)

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“…Great efforts have, therefore, been endeavored to increase the stabilities and further improve the activities of these catalysts toward the acidic HER and OER. [ 3b,6–8 ] Specifically, various approaches, such as carbon supporting, [ 9 ] core‐shell design, [ 1b,10 ] alloying, [ 11 ] hollow structure construction, [ 3b ] have therefore been explored. For example, carbon supporting can induce the strong interactions between the catalysts and carbon, increasing the activities and stabilities of the catalysts.…”

Section: Introductionmentioning

confidence: 99%

Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO₂ Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Zhu,

Wang,

Jiang

et al. 2024

Advanced Energy Materials

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This work reports the use of the metal‐support interaction strengthening through defect engineering and single atom adsorption to the supports to increase the catalytic activities of metals. Specifically, the plasma treated TiO2 nanowires with the Ir nanoparticle growth and the Sr single atom adsorption (the Ir@Sr‐p‐TiO2 NWs) are synthesized and demonstrated to be efficient catalysts for OER and HER. They only need overpotentials of 250 and 32 mV to drive 10 mA cm−2 for OER and HER, respectively. Their OER and HER activities are much higher than the commercial IrO2 and Pt/C. The high activities of the Ir@Sr‐p‐TiO2 NWs mainly arise from the strengthened metal‐support interactions between the Ir nanoparticles and the p‐TiO2 NWs, achieved by the plasma generated oxygen defects (Vo·) and the Sr adsorption on the p‐TiO2 NWs. Analysis and DFT calculations indicate that the Vo· and Sr adsorption can promote the charge transfer from the p‐TiO2 NWs to the Ir nanoparticles, optimizing the adsorptions of the OER and HER intermediates on the O‐ and H‐covered Ir nanoparticles. Additionally, the strong metal‐support interactions can increase the stabilities of the Ir NPs against the chemical corrosions, increasing the OER and HER durabilities of the Ir@Sr‐p‐TiO2 NWs.

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Section: Introductionmentioning

confidence: 99%

Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO₂ Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Zhu,

Wang,

Jiang

et al. 2024

Advanced Energy Materials

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“…It was convenient to precisely regulate the atomic configuration and crystallographic orientation at the interface through heterogeneous interfaces, resulting in a high density of catalytic sites, excellent conductivity, and more structural defects, which greatly broke through the activity limit of the catalysts. 38,39…”

Section: Introductionmentioning

confidence: 99%

Heterointerface MnO₂/RuO₂ with rich oxygen vacancies for enhanced oxygen evolution in acidic media

Guan,

Chen,

Liu

et al. 2024

Nanoscale

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Strong Metal‐Support Interaction Modulation between Pt Nanoclusters and Mn₃O₄ Nanosheets through Oxygen Vacancy Control to Achieve High Activities for Acidic Hydrogen Evolution

Hu,

Wang,

Chen

et al. 2024

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The optimization of metal‐support interactions is used to fabricate noble metal‐based nanoclusters with high activity for hydrogen evolution reaction (HER) in acid media. Specifically, the oxygen‐defective Mn3O4 nanosheets supported Pt nanoclusters of ≈1.71 nm in diameter (Pt/V·‐Mn3O4 NSs) are synthesized through the controlled solvothermal reaction. The Pt/V·‐Mn3O4 NSs show a superior activity and excellent stability for the HER in the acidic media. They only require an overpotential of 19 mV to drive −10 mA cm−2 and show negligible activity loss at −10 and −250 mA cm−2 for >200 and >60 h, respectively. Their Pt mass activity is 12.4 times higher than that of the Pt/C and even higher than those of many single‐atom based Pt catalysts. DFT calculations show that their high HER activity arises mainly from the strong metal‐support interaction between Pt and Mn3O4. It can facilitate the charge transfer from Mn3O4 to Pt, optimizing the H adsorption on the catalyst surface and promoting the evolution of H2 through the Volmer–Tafel mechanism. The oxygen vacancies in the V·‐Mn3O4 NSs are found to be inconducive to the high activity of the Pt/V·‐Mn3O4 NSs, highlighting the great importance to reduce the vacancy levels in V·‐Mn3O4 NSs.

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High activity and excellent durability of oxygen-vacancy-rich ruthenium manganese oxide solid-solution nanowires for the oxygen evolution reaction in acidic media

Abstract: Oxygen vacancy-rich solid-solution RuxMn1−xO2 nanowires have been reported to be efficient catalysts for acidic oxygen evolution reaction. They only need an overpotential of 200 mV to drive 10 mA cm−2 and show no obvious activity drop for >600 h.

Cited by 9 publications

References 36 publications

Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO₂ Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO₂ Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Heterointerface MnO₂/RuO₂ with rich oxygen vacancies for enhanced oxygen evolution in acidic media

Strong Metal‐Support Interaction Modulation between Pt Nanoclusters and Mn₃O₄ Nanosheets through Oxygen Vacancy Control to Achieve High Activities for Acidic Hydrogen Evolution

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High activity and excellent durability of oxygen-vacancy-rich ruthenium manganese oxide solid-solution nanowires for the oxygen evolution reaction in acidic media

Abstract: Oxygen vacancy-rich solid-solution RuxMn1−xO2 nanowires have been reported to be efficient catalysts for acidic oxygen evolution reaction. They only need an overpotential of 200 mV to drive 10 mA cm−2 and show no obvious activity drop for >600 h.

Cited by 9 publications

References 36 publications

Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO2 Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO2 Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Heterointerface MnO2/RuO2 with rich oxygen vacancies for enhanced oxygen evolution in acidic media

Strong Metal‐Support Interaction Modulation between Pt Nanoclusters and Mn3O4 Nanosheets through Oxygen Vacancy Control to Achieve High Activities for Acidic Hydrogen Evolution

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Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO₂ Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Defect Engineering Promoted Ultrafine Ir Nanoparticle Growth and Sr Single‐Atom Adsorption on TiO₂ Nanowires to Achieve High‐Performance Overall Water Splitting in Acidic Media

Heterointerface MnO₂/RuO₂ with rich oxygen vacancies for enhanced oxygen evolution in acidic media

Strong Metal‐Support Interaction Modulation between Pt Nanoclusters and Mn₃O₄ Nanosheets through Oxygen Vacancy Control to Achieve High Activities for Acidic Hydrogen Evolution