Catalysis Science & Technology最新文献

Controlling chemoselectivity of heterogeneous Pt catalysts via a support induced effect. 通过载体诱导效应控制非均相Pt催化剂的化学选择性。

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-09-29 DOI: 10.1039/d6cy00493h

Lifeng Xiao, Kushagra Agrawal, Rongsheng Cai, Ruiyang Qu, Sofia Mediavilla Madrigal, Matthew Conway, David J Morgan, Stuart H Taylor, Andrew M Beale, Sarah J Haigh, Andrew J Logsdail, Meenakshisundaram Sankar

{"title":"Controlling chemoselectivity of heterogeneous Pt catalysts via a support induced effect.","authors":"Lifeng Xiao, Kushagra Agrawal, Rongsheng Cai, Ruiyang Qu, Sofia Mediavilla Madrigal, Matthew Conway, David J Morgan, Stuart H Taylor, Andrew M Beale, Sarah J Haigh, Andrew J Logsdail, Meenakshisundaram Sankar","doi":"10.1039/d6cy00493h","DOIUrl":"10.1039/d6cy00493h","url":null,"abstract":"Tuning the chemoselectivity of a supported metal heterogeneous catalyst during hydrogenation reactions is extremely important and challenging, often achieved by changing the metal or adding homogeneous additives to the reaction. Tuning of the chemoselectivity for a given reaction over a supported metal catalyst, with a better understanding of the nature of the active site, is highly valuable to both academia and industry. Here, we report a support induced chemoselectivity (SIC) switch between Pt/TiO2 and Pt/Nb2O5 during the hydrogenation of 3-nitrostyrene with high chemoselectivity. Specifically, 0.2%Pt/TiO2 selectively reduces the -NO2 group to form 3-vinyl aniline, whereas 0.2%Pt/Nb2O5 selectively reduces the C[double bond, length as m-dash]C bond to form 3-ethylnitrobenzene. Advanced characterisation and ab initio calculations indicate that the observed differences in selectivity could be because of support-dependent interactions at Pt-support interfacial sites, which modify the local electronic environment and adsorption behaviour of the substrate. These results suggest that the support-metal interfacial sites could potentially play a key role in controlling and switching chemoselectivity during 3-nitrostyrene hydrogenation. These results demonstrate that, in addition to modifying the metallic sites, the chemoselectivity of supported Pt nanoparticles can also be tuned by changing the support, offering an additional approach for designing new chemoselective supported metal catalysts for 3-nitrostyrene hydrogenation.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13647151/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149133989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emulsion-templated hierarchical silica monoliths functionalized with sulfonic acid for esterification and acetalization reactions. 乳液模板级联硅胶单体与磺酸功能化的酯化和缩醛反应。

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-09-21 DOI: 10.1039/d6cy00824k

Binhang Zhao, Pan Yang, Donald R Inns, Angela Gondolini, Alessandra Sanson, Haifei Zhang

{"title":"Emulsion-templated hierarchical silica monoliths functionalized with sulfonic acid for esterification and acetalization reactions.","authors":"Binhang Zhao, Pan Yang, Donald R Inns, Angela Gondolini, Alessandra Sanson, Haifei Zhang","doi":"10.1039/d6cy00824k","DOIUrl":"https://doi.org/10.1039/d6cy00824k","url":null,"abstract":"Efficient heterogeneous catalysts have been developed owing to their advantages in reusability and sustainability. However, conventional catalysts composed of fine or nanosized particles suffered from a high pressure drop and catalyst loss in fixed-bed or batch reactors, limiting their practical applications. In this work, macro-mesoporous hierarchical silica monoliths were fabricated via an emulsion-templating method with easily available silica colloids as building blocks. Post-grafting of -SH groups and subsequent oxidation with H2O2 generated hierarchically porous silica monoliths with sulfonic acid sites. The resulting H-(0.9) SO3-75%-silica exhibited an interconnected macroporous morphology with a pore volume of 2.67 cm3 g-1 and a surface area of 232.7 m2 g-1. NH3 temperature programmed desorption analysis confirmed the presence of acidic sites, while the sulfonic acid site density was estimated from the sulphur content determined by elemental analysis. The H-(0.9) SO3-75%-silica catalyst demonstrated high performance in both oleic acid-rich fatty acid feedstock esterification and glycerol acetalization. The free fatty acid conversion reached 95% at 90 °C in 6 h with a turnover frequency (TOF) of 32.1 h-1, while glycerol acetalization achieved 98.6% conversion and 98% solketal selectivity at 20 °C within 30 min (TOF = 1155 h-1). Moreover, the catalyst maintained high activity over five consecutive cycles, and its monolithic form allowed easy separation from the reaction system, indicating its potential suitability for practical continuous or fixed-bed applications.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13636408/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149101076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A modular plug-and-play reaction platform for operando SEM investigations under fixed-bed conditions. 模块化即插即用反应平台，用于固定床条件下的操作扫描电镜研究。

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-09-10 DOI: 10.1039/d6cy00143b

Luis Sandoval-Diaz, Johannes Zeininger, Daniel Delgado, Konstantinos Kappis, Frank Girgsdies, Maurits Vuijk, Annika Kubsch, Gudrun von der Waydbrink, Sebastian Matera, Günther Rupprechter, Karsten Reuter, Beatriz Roldan-Cuenya, Christoph Scheurer, Annette Trunschke, Thomas Lunkenbein

{"title":"A modular plug-and-play reaction platform for operando SEM investigations under fixed-bed conditions.","authors":"Luis Sandoval-Diaz, Johannes Zeininger, Daniel Delgado, Konstantinos Kappis, Frank Girgsdies, Maurits Vuijk, Annika Kubsch, Gudrun von der Waydbrink, Sebastian Matera, Günther Rupprechter, Karsten Reuter, Beatriz Roldan-Cuenya, Christoph Scheurer, Annette Trunschke, Thomas Lunkenbein","doi":"10.1039/d6cy00143b","DOIUrl":"https://doi.org/10.1039/d6cy00143b","url":null,"abstract":"Fixed-bed reactors are widely employed in heterogeneous catalysis, providing controlled gas flow, efficient gas-solid contact, homogeneous heating and quantitative analysis of catalytic performance. Here, we present a modular platform for operando scanning electron microscopy (OSEM) inspired by these key design principles of fixed-bed reactors, while remaining compatible with the constraints of SEM operation. We demonstrate the system's capabilities using copper oxide reduction and the technologically relevant CO2 hydrogenation over a zincian malachite catalyst as benchmark reactions. We further explore how pressure influences product distribution during CO2 hydrogenation over a spinel catalyst. By combining the imaging ability of electron microscopy with quantitative performance analysis in the proposed configuration, the platform unlocks catalytic insights during activation, reaction and deactivation that were previously inaccessible to conventional SEM approaches.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13580394/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Linking atomic ordering in CoPt to CH₄ activation in dry reforming of methane. 甲烷干重整中CH4活化与CoPt原子有序的关系。

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-08-19 eCollection Date: 2026-10-05 DOI: 10.1039/d6cy00779a

David Niedbalka, Felix Donat, Suchetana Samanta, Praveen Bollini, Christoph R Müller, Paula M Abdala

{"title":"Linking atomic ordering in CoPt to CH4 activation in dry reforming of methane.","authors":"David Niedbalka, Felix Donat, Suchetana Samanta, Praveen Bollini, Christoph R Müller, Paula M Abdala","doi":"10.1039/d6cy00779a","DOIUrl":"10.1039/d6cy00779a","url":null,"abstract":"The dry reforming of methane (DRM) converts two major greenhouse gases, CH4 and CO2, into a synthesis gas (H2 and CO). Bimetallic DRM catalysts, such as CoPt catalysts, offer structural and electronic tunability and, in turn, potentially a higher product formation rate than monometallic systems. Bimetallic systems can occur as random or ordered alloys (intermetallics), yet it is currently unclear to what extent atomic ordering can affect the intrinsic DRM kinetics. Here, we investigate the structural dynamics of CoPt nanoparticles for DRM using operando X-ray diffraction coupled with X-ray absorption spectroscopy (XRD-XAS), and correlate our structural findings with the observed kinetics. Under DRM conditions, the intermetallic L10-CoPt phase is stable at 700 °C, whereas a random alloy phase dominates at 800 °C. Kinetic analysis of CH4 activation reveals a change in the apparent activation energy around this structural transition, i.e., a higher apparent activation energy for the disordered structure, and a lower apparent activation energy for the ordered intermetallic phase. These results provide evidence that the DRM activity of the bimetallic CoPt system is structure-sensitive; a high degree of atomic ordering enhances CH4 activation.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":"6591-6598"},"PeriodicalIF":4.0,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13504989/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148816791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tri-oxo-triangulene is a polyfunctional catalyst of sequential red-green-blue photoredox systems. 三氧三角烯是红-绿-蓝顺序光氧化还原体系的多功能催化剂。

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-08-10 eCollection Date: 2026-10-05 DOI: 10.1039/d6cy00867d

Killiann Heinz, Emma Dos Santos, Valentino L P Guerra, Ján Tarábek, Josef Chudoba, Dan Trunov, Anatolij Sokolohorskyj, Leoš Valenta, Paula L Widmer, Michal Juríček, Petr Kovaříček

{"title":"Tri-oxo-triangulene is a polyfunctional catalyst of sequential red-green-blue photoredox systems.","authors":"Killiann Heinz, Emma Dos Santos, Valentino L P Guerra, Ján Tarábek, Josef Chudoba, Dan Trunov, Anatolij Sokolohorskyj, Leoš Valenta, Paula L Widmer, Michal Juríček, Petr Kovaříček","doi":"10.1039/d6cy00867d","DOIUrl":"10.1039/d6cy00867d","url":null,"abstract":"Photocatalysis remains a crucial field to investigate. It is seen as a powerful tool which allows more efficient, relatively greener and economical chemical reactions. Nevertheless, catalysts usually include rare and pricy metals, with supplies being highly dependent on geopolitics. Thus, chemists turned their attention to alternatives such as natural products or organic molecules, conciliating performances, polyvalence and easy access. Among the promising candidates, polyaromatics rise as robust species and precursors of stable radicals which could be used as photocatalysts. Triangulenes are polycyclic hydrocarbons which are expected to shine in multiple fields such as spintronics, energy and data storage or semiconductors. This work reports the studies of photocatalytic reactions including the trioxotriangulene (TOT). Through the studies of three reactions ranging from sulfoxidation to dehalogenation of 4-bromoacetophenone, including the reduction of nitroaromatics, we discuss the performances, the polyvalence and the mechanism of the systems including this triangulene. As a proof of concept, we conclude this work with a description of \"a sequential RBG photoredox catalytic system\" where the three reactions are successively and selectively performed in a \"one-pot\" fashion.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":"6362-6371"},"PeriodicalIF":4.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13544025/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148896184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic restructuring of Co-Pt nanoalloys during dry reforming of methane. 甲烷干重整过程中Co-Pt纳米合金的动态重构。

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-08-10 eCollection Date: 2026-09-21 DOI: 10.1039/d6cy00854b

David Niedbalka, Luca Thommen, Felix Donat, Diana Piankova, Christoph R Müller, Paula M Abdala

{"title":"Dynamic restructuring of Co-Pt nanoalloys during dry reforming of methane.","authors":"David Niedbalka, Luca Thommen, Felix Donat, Diana Piankova, Christoph R Müller, Paula M Abdala","doi":"10.1039/d6cy00854b","DOIUrl":"10.1039/d6cy00854b","url":null,"abstract":"The dry reforming of methane (DRM) converts two greenhouse gases, CH4 and CO2, into a synthesis gas, providing a route for CO2 valorization. Bimetallic nanoparticles offer a versatile strategy to improve the performance of monometallic catalyst systems by altering the electronic and local structures of the active metal sites. Here, we investigate SiO2-supported, Co x Pt1-x nanoalloys with varying composition (x = 0.1-0.9) for DRM. Structural characterization using pair distribution function analysis and electron microscopy revealed that the bimetallic nanoparticles feature fcc-type alloy structures with diameters of 1-2 nm, highly dispersed on SiO2. Catalytic evaluation under DRM conditions shows that Pt-rich catalysts exhibit the highest initial CH4 conversion rates, while increasing the Co content lowers the DRM activity and the H2 : CO ratio due to an enhanced reverse water-gas shift activity. When normalized per Pt loading, the initial (20 min) CH4 consumption rates remain largely unchanged, confirming Pt as the primary active site for CH4 activation. Pt-rich catalysts deactivate rapidly with time on stream via coking (graphite), whereas alloying with Co improves their stability by suppressing carbon deposition. However, Co oxidation induces dealloying and contributes to deactivation, in particular at low temperatures (750 °C). Intermediate Co : Pt ratios, i.e., Co0.5Pt0.5-Co0.7Pt0.3, yield the best performing catalyst as they strike a balance between activity, H2 : CO ratio, and stability, enabling an effective utilization of expensive Pt.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":"6107-6118"},"PeriodicalIF":4.0,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13482558/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced photoelectrochemical water splitting of In-doped TiO2 nanorods with oxygen vacancies: synergistic effects of band structure and charge carrier dynamics engineering 带氧空位的掺杂TiO2纳米棒的光电分解：能带结构和载流子动力学工程的协同效应

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-06-22 Epub Date: 2025-10-03 DOI: 10.1039/d5cy00739a

Suyi Yang, Baoyuan Wang, Yan Zhang, Chaofan Guo, Sheng Yang, Liting Wei, Jinzhan Su, Liejin Guo

{"title":"Enhanced photoelectrochemical water splitting of In-doped TiO2 nanorods with oxygen vacancies: synergistic effects of band structure and charge carrier dynamics engineering","authors":"Suyi Yang, Baoyuan Wang, Yan Zhang, Chaofan Guo, Sheng Yang, Liting Wei, Jinzhan Su, Liejin Guo","doi":"10.1039/d5cy00739a","DOIUrl":"10.1039/d5cy00739a","url":null,"abstract":"<div><div>Titanium dioxide (TiO2) is a widely studied photocatalyst for photoelectrochemical (PEC) water splitting due to its excellent stability, low cost, and non-toxicity. However, conventional doping strategies to enhance TiO2 performance often increase light absorption and carrier concentration at the expense of introducing carrier recombination centers. In this study, we propose a simple one-step hydrothermal method to synthesize In-doped TiO2 nanorods, where In3+ doping synergistically stabilizes oxygen vacancies through charge compensation mechanisms. This dual modification optimizes the band structure, significantly increases charge carrier density, and reduces charge transfer resistance, leading to enhanced oxygen evolution reaction (OER) kinetics and overall PEC efficiency. The optimized In-doped TiO2 nanorods achieve a photocurrent density of 1.4 mA cm−2 at 1.23 V vs. RHE, 2.8 times higher than that of pristine TiO2. Density functional theory (DFT) calculations further reveal that In3+ doping lowers the energy barrier of the rate-determining step (*OH → *O) by modulating the electronic structure of Ti active sites. This work demonstrates a synergistic strategy of combining element doping and oxygen vacancy engineering to design high-performance TiO2-based photoanodes for solar energy conversion.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"16 12","pages":"Pages 4045-4056"},"PeriodicalIF":4.0,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exciton-mediated singlet oxygen generation in a donor–acceptor hydrogen-bonded organic framework for oxidative coupling of benzylamines 在供体-受体氢键有机框架中激子介导的单线态氧的产生用于苯胺的氧化偶联

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-06-22 Epub Date: 2026-05-12 DOI: 10.1039/d6cy00436a

Jin-Lin Li, Yao Wang, Jia-Jun Yu, Ying Zou, Lei Cai

{"title":"Exciton-mediated singlet oxygen generation in a donor–acceptor hydrogen-bonded organic framework for oxidative coupling of benzylamines","authors":"Jin-Lin Li, Yao Wang, Jia-Jun Yu, Ying Zou, Lei Cai","doi":"10.1039/d6cy00436a","DOIUrl":"10.1039/d6cy00436a","url":null,"abstract":"<div><div>The selective activation of molecular oxygen remains a central challenge in photocatalytic oxidative coupling of benzylamines, primarily due to inefficient charge separation and uncontrolled radical pathways. In contrast, exciton energy transfer provides a milder and more controllable route by enabling the direct generation of singlet oxygen (1O2) without relying on free charge carriers. Herein, we developed a donor–acceptor (D–A) hydrogen-bonded organic framework (HOF), PFC-111, as an intrinsically photoactive catalyst. The hydrogen-bonded linkage between adjacent D–A units facilitates exciton energy transfer, leading to the efficient activation of molecular oxygen under visible light irradiation. As a result, PFC-111 promotes the oxidative coupling of benzylamines under mild conditions with high isolated yield, excellent selectivity, and good recyclability. This work not only establishes PFC-111 as a versatile platform for 1O2 organic transformations, but also underscores the great potential of HOFs in sustainable photocatalysis.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"16 12","pages":"Pages 4167-4172"},"PeriodicalIF":4.0,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of crystal facets of SrTiO3 nanosheet supports on Pd catalysts for automotive exhaust purification SrTiO3纳米片载体晶面对汽车尾气净化钯催化剂性能的影响

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-06-22 Epub Date: 2026-05-18 DOI: 10.1039/d6cy00414h

Toyokazu Tanabe, Moe Hokugo, Sei Imatoku, Kentaro Toyama, Takaaki Morimoto, Reito Kobayashi, Shugoro Tsutsumi, Saburo Hosokawa

{"title":"Influence of crystal facets of SrTiO3 nanosheet supports on Pd catalysts for automotive exhaust purification","authors":"Toyokazu Tanabe, Moe Hokugo, Sei Imatoku, Kentaro Toyama, Takaaki Morimoto, Reito Kobayashi, Shugoro Tsutsumi, Saburo Hosokawa","doi":"10.1039/d6cy00414h","DOIUrl":"10.1039/d6cy00414h","url":null,"abstract":"<div><div>This study examines how the exposed crystal facets of SrTiO3 (STO) nanosheets affect the catalytic behavior of supported Pd nanoparticles for automotive exhaust purification. The Pd/STO(111)-facet nanosheet shows lower light-off temperatures for CO–C3H6 oxidation and NO reduction than the Pd/STO(100)-facet nanosheet, even though its surface area is much smaller. Structural analyses reveal that the STO(111) facet creates a much stronger metal–support interaction (MSI), stabilizing highly dispersed Pd nanoparticles (≈4.6 nm) and maintaining both PdO and Pd0 during the reaction. This strong MSI suppresses sintering and supports dual oxidation states, leading to superior catalytic performance. In contrast, the weaker MSI on the STO(100) facet allows Pd to grow into large particles (≈60.2 nm) with limited redox flexibility and fewer active sites, resulting in poorer activity. These results demonstrate that the facet-dependent MSI is the key to controlling Pd dispersion and oxidation-state dynamics, highlighting crystal facet engineering as an effective strategy for designing high-performance oxide-supported catalysts.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"16 12","pages":"Pages 4173-4180"},"PeriodicalIF":4.0,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Operando exsolved FeNi3 nanoparticles for boosting ethanol internal reforming in solid oxide fuel cells Operando溶解FeNi3纳米颗粒促进固体氧化物燃料电池中乙醇的内部重整

IF 4 3区化学

Catalysis Science & Technology Pub Date : 2026-06-22 Epub Date: 2026-05-12 DOI: 10.1039/d5cy01572c

J. Roelf F. Maring, Emerson L. dos Santos Veiga, Francisco F. Tabuti, Majid Ahmadi, Fabio C. Fonseca, Vasileios Kyriakou

{"title":"Operando exsolved FeNi3 nanoparticles for boosting ethanol internal reforming in solid oxide fuel cells","authors":"J. Roelf F. Maring, Emerson L. dos Santos Veiga, Francisco F. Tabuti, Majid Ahmadi, Fabio C. Fonseca, Vasileios Kyriakou","doi":"10.1039/d5cy01572c","DOIUrl":"10.1039/d5cy01572c","url":null,"abstract":"<div><div>Direct ethanol solid oxide fuel cells (SOFCs) are considered promising for power generation with high efficiency and flexibility from sustainable sources. Among their major challenges is the choice of catalytically active, chemically stable and coking tolerant fuel electrodes (anodes) for the internal reforming and oxidation of ethanol. Here, we operando exsolved FeNi3 nanoparticles from a Ni-doped SFM (Sr2Fe1.3Mo0.5Ni0.2O6±δ, SFMNi) fuel electrode that significantly enhanced the power output. Our analysis confirmed that Ni doping increased surface basicity and oxygen vacancy concentration which are linked to ethanol steam reforming selectivity toward dehydrogenation pathways over the undesired dehydration observed for the undoped SFM sample. The thermocatalytic studies revealed the high ethanol reforming activity of FeNi3 nanoparticles with intriguing coking tolerance properties as confirmed by crystallographic and Raman analyses. This resulted in a >30% enhancement in the peak power density with adequate stability. Our findings highlight the strong coupling between reforming activity and electrochemical performance, positioning the use of nanoparticle-functionalized perovskite electrodes as a promising strategy for efficient and flexible SOFCs operating on renewable fuels.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"16 12","pages":"Pages 4220-4231"},"PeriodicalIF":4.0,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0