Nanoscale Architecture of RuO2/La0.9Fe0.92Ru0.08–xO3−δ Composite via Manipulating the Exsolution of Low Ru-Substituted A-Site Deficient Perovskite

Jiang, Yilan; Geng, Zhibin; Yuan, Long; Sun, Yu; Cong, Yang; Huang, Keke; Wang, Lei; Zhang, Wei

doi:10.1021/acssuschemeng.8b02288

Cited by 42 publications

(39 citation statements)

References 46 publications

(75 reference statements)

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“…[146] In addition the release of Ru nanoparticles on the surface of the perovskite oxides enhances the electrocatalytic activity of the materials because these newly formed particles correspond to additional active sites. [143][144][145] Use of exsolved Ru nanoparticle systems in methane conversion processes demonstrate high conversions, yields and remarkable stability. Ru nanoparticles exsolved from Sr 0.92 Y 0.08 Ti 1−x Ru x O 3−d [147] or Sm 2 Ru x Ce 2−x O 7 [148] perovskites exhibited superior performance, which was accredited to their high resistance to sintering-induced deactivation as a result of the stabilizing metal-support interaction in this class of materials.…”

Section: Rutheniummentioning

confidence: 99%

“…The range of electrochemical applications where exsolution of Ru is used is vast ranging from NH 3 synthesis, [ 143 ] to direct ethanol fuel cells [ 144 ] or OER cells. [ 145 ] In all cases increase of the electrochemical activity is reported as a result of the enhancement of the electronic conductivity of the materials upon Ru doping. [ 144,145 ] This is believed to occur due to the distortion of the BO 6 octahedron inflicted by the substitution of B‐site ions (i.e., Mn) with Ru.…”

Section: Noble Metal Systems and Their Applicationsmentioning

confidence: 99%

“…[ 145 ] In all cases increase of the electrochemical activity is reported as a result of the enhancement of the electronic conductivity of the materials upon Ru doping. [ 144,145 ] This is believed to occur due to the distortion of the BO 6 octahedron inflicted by the substitution of B‐site ions (i.e., Mn) with Ru. [ 146 ] In addition the release of Ru nanoparticles on the surface of the perovskite oxides enhances the electrocatalytic activity of the materials because these newly formed particles correspond to additional active sites.…”

Section: Noble Metal Systems and Their Applicationsmentioning

confidence: 99%

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Emergence and Future of Exsolved Materials

Kousi

Tang

Metcalfe

et al. 2021

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game-changing across multiple fields including but not limited to energy conversion and storage and catalysis, as evidenced by more than 300 papers having been published since the first reports of the method a decade ago. However, to the best of our knowledge only four reviews covering different application-related aspects of exsolution have been published so far. [17][18][19][20] Here, we review the trends that define the development of the exsolution concept in terms of design, tunability, functionality, and applicability. We analyze a set of 300 papers published so far on exsolution, to extract statistical information in terms of design elements (types of crystal structures, exsolvable and host lattice elements), synthesis routes, functionalities, and fields of application, including electrochemistry, catalysis photocatalysis, and other (discussed separately for noble and non-noble metal systems). The selected papers are listed and analyzed in the Supporting Information and the results are summarized in the infographic shown in Figure 3 and in Table 1 and based on these, we highlight exciting future directions of research in this fast-growing field. Figure 3. Exsolution infographic. Statistical analysis on a pool of 300 papers published on the field of exsolution since 2010.

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Section: Rutheniummentioning

confidence: 99%

Section: Noble Metal Systems and Their Applicationsmentioning

confidence: 99%

Section: Noble Metal Systems and Their Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Emergence and Future of Exsolved Materials

Kousi

Tang

Metcalfe

et al. 2021

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113

107

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“…The surface reactivity of perovskite oxides can be influenced by their oxygen vacancies. A RuO 2 /La 0.9 Fe 0.92 Ru 0.08 O 3 composite by fractional Ru-substituted A-site deficient perovskite revealed a better OER activity than the pure LFRO, the conductivity of which was vastly improved through creating the deficiency [62]. One approach to introducing oxygen vacancies is to generate A-site deficiency in the oxides [63,64].…”

Section: Active Perovskite Oxygen Electrocatalystsmentioning

confidence: 99%

Recent Advances in Oxygen Electrocatalysts Based on Perovskite Oxides

Chen

Han

et al. 2019

Nanomaterials

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Electrochemical oxygen reduction and oxygen evolution are two key processes that limit the efficiency of important energy conversion devices such as metal–air battery and electrolysis. Perovskite oxides are receiving discernable attention as potential bifunctional oxygen electrocatalysts to replace precious metals because of their low cost, good activity, and versatility. In this review, we provide a brief summary on the fundamentals of perovskite oxygen electrocatalysts and a detailed discussion on emerging high-performance oxygen electrocatalysts based on perovskite, which include perovskite with a controlled composition, perovskite with high surface area, and perovskite composites. Challenges and outlooks in the further development of perovskite oxygen electrocatalysts are also presented.

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“…[24,51] Mo et al [49] reported an early study on the use of Recently, several studies demonstrated that catalytically active transition metals can be substituted on the B-site of perovskite oxides (ABO 3 ), in oxidizing conditions, and released (exsolved) on the surface as metal particles in subsequent reduction treatment. [52][53][54][55][56][57][58][59][60] It has been reported that exsolved particles are more resilient to agglomeration and coking as compared to the deposited analogues due to the partial embedment of exsolved particles on the perovskite surface. A stronger metal-support interface is created via the anchoring of exsolved particles on the parent perovskite.…”

Section: Introductionmentioning

confidence: 99%

Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane

et al. 2019

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In this study, redox exsolution method was used to synthesize Co/Co−Al spinel for dry reforming. The aim is to improve metal‐support interaction, which enhances the catalyst's stability and minimizes carbon deposition. The synthesized catalysts were observed as Co embedded on Co deficient CoAl2O4‐like spinel (denoted as Co−Al spinel). The reduction temperature was optimized at 750 °C. Investigations on the effect of Co loading revealed that optimum Co loading is needed to control the Co particle size, providing balance between limiting carbon deposition rate and preventing dissolution of Co into the support. The best performing catalyst, Co‐15, in which the molar ratio of Co and Al is 15 : 85 produced a stable 81.5 % and 87.4 % conversions for CH4 and CO2 continuously over 24 h of reaction time with 13.51 wt% of carbon deposition. The strong metal‐support interaction of Co and Co−Al spinel in Co‐15 stabilizes and prevents the sintering of Co particles, enhancing the efficiency for dry reforming reaction.

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Nanoscale Architecture of RuO₂/La_0.9Fe_0.92Ru_0.08–xO_3−δ Composite via Manipulating the Exsolution of Low Ru-Substituted A-Site Deficient Perovskite

Cited by 42 publications

References 46 publications

Emergence and Future of Exsolved Materials

Emergence and Future of Exsolved Materials

Recent Advances in Oxygen Electrocatalysts Based on Perovskite Oxides

Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane

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