Materials Today Catalysis最新文献

Electrification of catalytic processes with induction heating: The possible hidden role of non-thermal magnetic fields 感应加热催化过程的电气化：非热磁场可能的隐藏作用

Materials Today Catalysis

Pub Date : 2025-12-10 DOI: 10.1016/j.mtcata.2025.100134

Spyridon Zafeiratos , Gilles Ulrich , Jean-Mario Nhut , Christophe Michon , Cuong Pham-Huu

The electrification of the chemical industry is a crucial step toward moving away from fossil fuels and achieving a more sustainable energy future. In this context, induction heating has emerged as a promising strategy to enhance catalytic performance in both metal-free carbon catalysts and metal-supported systems. This perspective emphasizes its strong potential, showing that induction heating improves performance not only through localized thermal effects but also through possible non-thermal contributions from alternating current magnetic fields. These fields can influence radical lifetimes, spin states, adsorption–desorption equilibria, and defect reactivity, thereby enabling reaction pathways and selectivities that remain inaccessible under conventional heating. Coupling carbon and supported metal catalysts with induction heating also offers an effective way to mitigate deactivation, as defect sites can act as adsorption centers that, under magnetic field stimulation, promote targeted transformations. Direct evidence for non-thermal contributions to catalytic performance remains scarce, mainly due to the limited availability of operando investigations. Nevertheless, the substantial gains in activity and selectivity observed under induction heating cannot be explained solely by localized thermal effects, suggesting an additional non-thermal influence. These findings point toward new opportunities for designing next-generation catalysts with improved operability and stability. In addition, the combined evidence of localized thermal effects, non-thermal field interactions, and the advantages of carbon-based catalysts shows that the synergy between advanced material design and induction heating provides a powerful pathway for electricity-driven catalysis, with significant implications for decarbonizing the chemical industry and advancing the energy transition.

化学工业的电气化是摆脱化石燃料、实现更可持续能源未来的关键一步。在这种情况下，感应加热已经成为一种很有前途的策略，可以提高无金属碳催化剂和金属支撑体系的催化性能。这一观点强调了其强大的潜力，表明感应加热不仅通过局部热效应，而且通过交流磁场可能的非热贡献来提高性能。这些场可以影响自由基寿命、自旋态、吸附-解吸平衡和缺陷反应性，从而实现在常规加热下无法实现的反应途径和选择性。通过感应加热耦合碳和负载型金属催化剂也提供了一种有效的方法来减轻失活，因为缺陷部位可以作为吸附中心，在磁场刺激下促进目标转化。非热对催化性能贡献的直接证据仍然很少，主要是由于operando研究的可用性有限。然而，在感应加热下观察到的活性和选择性的显著增加不能仅仅用局部热效应来解释，这表明存在额外的非热影响。这些发现为设计具有更好的可操作性和稳定性的下一代催化剂提供了新的机会。此外，局部热效应、非热场相互作用和碳基催化剂优势的综合证据表明，先进材料设计和感应加热之间的协同作用为电驱动催化提供了强大的途径，对化学工业脱碳和推进能源转型具有重要意义。

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引用次数: 0

Study on the hydrogen storage performance mechanism of MgH2 co-modified by rare earth hydride and high entropy hydrogen storage alloy based on in-situ differentiation 基于原位分异的稀土氢化物与高熵储氢合金共改性MgH2储氢性能机理研究

Materials Today Catalysis

Pub Date : 2025-12-01 DOI: 10.1016/j.mtcata.2025.100130

Haoyuan Zheng , Shuzhong Wang , Chen Jin , Hang Che , Yuqin Zheng , Shixuan He , Haizhen Liu , Lingchao Zhang , Xinhua Wang

Owing to its high hydrogen storage capacity (7.6 wt%), MgH₂ is regarded as a highly promising solid-state hydrogen storage material. Nonetheless, its commercialization is constrained by high thermodynamic stability and sluggish hydrogen sorption kinetics. Thus, catalyst introduction is essential to enhance MgH₂’s hydrogen storage performance. This study designed and synthesized a hydrogen storage high-entropy alloy, TiVCrZrNbCe. Upon doping with Ce to enhance activation, the alloy was combined with MgH₂ to fabricate a composite hydrogen storage system, thereby boosting the overall hydrogen storage properties of MgH₂. Results indicate that the Ce-doped alloy eliminates the initial long hydrogen absorption induction period and exhibits rapid hydrogen absorption capability. The optimal MgH₂/10 wt% HEA composite for hydrogen storage incorporates a Ce-doped alloy and MgH₂. MgH₂/10 wt% HEA shows initial/peak dehydrogenation temperatures of 205/270 °C, releases 6.05 wt% hydrogen, and enables rapid hydrogen absorption at room temperature. The hydrogen sorption activation energies are reduced to 40.8/76.8 kJ mol⁻¹, and the capacity maintains well over ten cycles. Microstructure and mechanism analyses reveal that during ball milling of the MgH₂-alloy, the Ce element in the alloy will interact with MgH₂ to partially absorb hydrogen to form CeH_2.51 in situ and generate a hydride FCC-MH phase. During hydrogen absorption/desorption, CeH_2.51 and the alloy serve as nucleation sites for MgH₂, effectively promoting its hydrogenation/dehydrogenation reactions and exerting a “hydrogen overflow” effect. Additionally, the alloy’s self hydrogen absorption/desorption drives MgH₂’s hydrogenation/dehydrogenation, functioning as a “hydrogen pump”. The hydrogen absorption/desorption properties of MgH₂ were notably optimized via the synergistic catalysis of CeH_2.51 and the alloy. This work offers novel insights for designing and catalytically modifying new MgH₂ catalysts.

由于其高储氢容量（7.6 wt%）， MgH2被认为是一种非常有前途的固态储氢材料。然而，它的商业化受到高热力学稳定性和缓慢的氢吸附动力学的限制。因此，催化剂的引入对于提高MgH2的储氢性能至关重要。本研究设计并合成了一种储氢高熵合金TiVCrZrNbCe。在掺杂Ce增强活化后，与MgH2复合制备复合储氢体系，从而提高了MgH2的整体储氢性能。结果表明，ce掺杂合金消除了初始较长的吸氢诱导期，表现出快速的吸氢能力。最佳的MgH2/10 wt% HEA储氢复合材料包含ce掺杂合金和MgH2。MgH2/10 wt% HEA脱氢的初始/峰值温度为205/270°C，释放出6.05 wt%的氢，并能在室温下快速吸氢。氢吸附活化能降低到40.8/76.8 kJ mol−1，并且在10次循环后容量保持良好。显微组织和机理分析表明，MgH2-合金在球磨过程中，合金中的Ce元素与MgH2相互作用，部分吸附氢，原位生成CeH2.51，生成氢化物FCC-MH相。在吸氢/解吸氢过程中，CeH2.51和合金作为MgH2的成核位点，有效促进MgH2的加氢/脱氢反应，产生“氢气溢出”效应。此外，合金自身的吸氢/解吸氢驱动MgH2的加氢/脱氢，起到“氢泵”的作用。CeH2.51与该合金的协同催化作用显著优化了MgH2的吸氢/脱氢性能。这项工作为设计和催化改性新型MgH2催化剂提供了新的见解。

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Ediorial Board Ediorial董事会

Materials Today Catalysis

Pub Date : 2025-12-01 DOI: 10.1016/S2949-754X(25)00045-6

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Materials Today Catalysis

Pub Date : 2025-12-01 DOI: 10.1016/S2949-754X(25)00044-4

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Reactive oxygen species in selective heterogeneous catalytic oxidations 选择性非均相催化氧化中的活性氧

Materials Today Catalysis

Pub Date : 2025-12-01 DOI: 10.1016/j.mtcata.2025.100126

Laura A. Achola , Elsa Njeri , Luisa F. Posada , Steven L. Suib

Heterogeneous catalysis is essential in industrial chemical processes, particularly selective oxidation reactions. Oxidative reactions are complex due to the occurrence of multiple reaction pathways, kinetic and thermodynamic effects, and the involvement of reactive oxygen species (ROS). ROS, including superoxide radical anions (O₂^·-), hydrogen peroxide (H₂O₂), hydroxyl radicals (^•OH), and singlet oxygen (¹O₂), can enhance selectivity or lead to overoxidation of reactants. Thus, ROS identification on a catalyst’s surface or under real-time conditions is crucial for determining mechanistic pathways and the key ROS species that contribute to high selectivity for oxidation processes. Tracking these reactive species can be challenging within heterogeneous systems. Most detection methods are hindered by the rapid decay of ROS, the complexity and cost of spin-trapping probes, lack of probe selectivity, and interference from other species in the reaction, which limits real-time ROS monitoring. There remains a need for reliable detection and scavenging methods, further combined with characterization techniques such as EPR, XPS, in situ DRIFTS, and oxygen isotope labeling. Prior review articles on ROS focus on applications in medicine, biological fields, and photocatalysis. This review examines the chemistry of molecular oxygen, generation mechanisms, and the detection of ROS in heterogeneous selective catalytic oxidations and our contribution to the field; we focus on literature published over the last five decades, highlight the specific challenges associated with studying these systems, and provide strategies for overcoming these limitations. Finally, we discuss in situ vs. ex situ ROS probing techniques and demonstrate their importance in dynamic catalytic systems.

在工业化学过程中，特别是选择性氧化反应中，多相催化是必不可少的。氧化反应具有多种反应途径、动力学和热力学效应以及活性氧（ROS）的参与，是一种复杂的氧化反应。ROS包括超氧自由基阴离子（O2·-）、过氧化氢（H2O2）、羟基自由基（•OH）和单线态氧（1O2），它们可以增强选择性或导致反应物过度氧化。因此，在催化剂表面或实时条件下识别ROS对于确定机制途径和促进氧化过程高选择性的关键ROS物种至关重要。在异质系统中跟踪这些反应性物质可能具有挑战性。大多数检测方法都受到ROS快速衰减、自旋捕获探针的复杂性和成本、探针缺乏选择性以及反应中其他物质的干扰等因素的阻碍，从而限制了ROS的实时监测。目前仍需要可靠的检测和清除方法，并进一步结合表征技术，如EPR、XPS、原位漂移和氧同位素标记。目前对活性氧的研究主要集中在医学、生物和光催化等领域。本文综述了分子氧的化学性质、产生机制、多相选择性催化氧化中ROS的检测以及我们在该领域的贡献；我们关注过去五十年来发表的文献，强调与研究这些系统相关的具体挑战，并提供克服这些限制的策略。最后，我们讨论了原位与非原位ROS探测技术，并证明了它们在动态催化系统中的重要性。

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引用次数: 0

Impact of zeolite properties on catalytic hydrodeoxygenation: Spatially segregated metal-acid site engineering for enhanced cascade efficiency 沸石性质对催化加氢脱氧的影响：提高级联效率的空间隔离金属-酸位点工程

Materials Today Catalysis

Pub Date : 2025-11-15 DOI: 10.1016/j.mtcata.2025.100129

Shengzhe Ding , Min Hu , Ushna Khalid , Run Zou , Carmine D’Agostino , Yani Peng , Qiang Zhang , Yilai Jiao , Christopher M.A. Parlett , Xiaolei Fan

To reduce the environmental impact of hydrodeoxygenation (HDO) while enhancing process economics, it is crucial to develop advanced catalytic materials that enable HDO under milder conditions, suppress decarboxylation/decarbonylation (DCOx), and eliminate auxiliaries, all while maximising target product yield. Spatial segregation of metal and acid sites has emerged as an effective strategy for improving HDO efficiency in fatty acid conversion. This study explores the influence of zeolitic carrier porosity and acidity on HDO, employing Pd nanoparticles as the metal catalyst and lauric acid as the model substrate. The findings reveal that acidity and mesoporosity are key determinants of substrate conversion, product selectivity, and overall catalytic performance within the same zeolitic framework (MFI ZSM-5). High acidity and hydrophilicity in ZSM-5 zeolites hinder lauric acid conversion by retaining water within the framework, which would adversely affect reaction equilibria in the HDO cascade, whereas mesoporosity in hierarchical ZSM-5, which enhances mass transport, is beneficial for conversion and dodecane formation. For hierarchical ZSM-5, produced via desilication, the less acidic PdNP/HMZSM5-DA25 (25 reflecting the original Si:Al ratio) yields 2.5 times more dodecane than more acidic but less mesoporous PdNP/HMZSM5-DA15 (Si:Al of 15). Expanding this investigation to different zeolitic frameworks (Pd nanoparticles supported on USY, BETA, and ZSM-5) demonstrates that larger micropores further facilitate diffusion and improve catalytic efficiency. PdNP/HUSY-DA exhibits a 32% improvement over PdNP/HMZSM5-DA25, with a dodecane production rate of 6.1 mmol_dodecane g_catalyst⁻¹ h⁻¹, ranking it among the most superior state-of-the-art HDO systems at comparable conditions. This study validates the spatial segregation of active sites as a robust strategy for stabilising Pd nanoparticles and improving catalyst durability in cascade HDO processes. Fine-tuning zeolite properties is essential for optimising catalyst design to achieve efficient and sustainable biofuel production via HDO.

为了减少氢脱氧（HDO）对环境的影响，同时提高工艺经济性，开发先进的催化材料至关重要，这些材料可以在更温和的条件下实现氢脱氧（HDO），抑制脱羧/脱碳（DCOx），消除助剂，同时最大限度地提高目标产品收率。金属和酸位点的空间分离已成为提高脂肪酸转化HDO效率的有效策略。本研究以钯纳米粒子为金属催化剂，月桂酸为模型底物，探讨了沸石载体孔隙度和酸度对HDO的影响。研究结果表明，在相同的分子筛框架内，酸度和介孔度是底物转化、产物选择性和整体催化性能的关键决定因素（MFI ZSM-5）。ZSM-5分子筛的高酸性和亲水性阻碍了月桂酸的转化，因为它将水保留在骨架内，这将对HDO级联反应的平衡产生不利影响，而分级ZSM-5分子筛的介孔增强了质量传递，有利于转化和十二烷的形成。对于通过脱硅制备的分级ZSM-5，酸性较弱的PdNP/HMZSM5-DA25（25反映原始Si:Al比）比酸性较强但介孔较小的PdNP/HMZSM5-DA15 （Si:Al = 15）产生的十二烷多2.5倍。将这项研究扩展到不同的沸石框架（USY、BETA和ZSM-5支撑的Pd纳米颗粒），表明更大的微孔进一步促进扩散并提高催化效率。PdNP/ hsy - da比PdNP/HMZSM5-DA25提高了32%，十二烷的产率为6.1 mmoldodecane gcatalyst - 1 h - 1，在同等条件下是最先进的HDO体系之一。该研究验证了活性位点的空间分离是稳定钯纳米粒子和提高级联HDO过程中催化剂耐久性的有效策略。微调沸石性质对于优化催化剂设计至关重要，从而通过HDO实现高效和可持续的生物燃料生产。

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引用次数: 0

Urea electrosynthesis from gaseous nitrogen oxides and carbon dioxide: A review 气态氮氧化物和二氧化碳电合成尿素的研究进展

Materials Today Catalysis

Pub Date : 2025-11-03 DOI: 10.1016/j.mtcata.2025.100128

Yifan Zhou , Changrui Feng , Chenghan Sun , Zekun Chen , Shuying Li , Yuxia Jin , Rui Yang , Yuanchuan Hao , Abuliti Abudula , Guoqing Guan

Urea as a vital nitrogen fertilizer and chemical precursor faces unsustainable industrial production via the Bosch-Meiser process, which relies on energy-intensive Haber-Bosch ammonia (NH₃) and emits significant CO₂. Urea electrosynthesis through C-N coupling offers a promising alternative by utilizing CO₂ and renewable electricity under ambient conditions. However, the high activation barrier of N₂ (NN bond energy: 941 kJ mol⁻¹) limits electrosynthesis efficiency. This review highlights the emerging strategy of substituting nitrogen oxide (NO_x) pollutants (NO and N₂O) for N₂ as reactive nitrogen sources, which not only circumvents N₂ activation challenges but also enables simultaneous environmental remediation. The fundamental reaction mechanisms involved in co-reduction of NO_x and CO₂ are systematically outlined and discussed. Subsequently, the review delves into critical aspects of catalyst design encompassing both computational screening approaches and experimental research findings for developing efficient catalytic systems. A significant focus is placed on analyzing the current limitations hindering practical implementation, including low urea yield rates (UYR) as well as low Faradaic efficiency (FE), challenges posed by low reactant concentrations, and economic barriers related to industrial-scale applications. Finally, the review presents future perspectives to overcome these hurdles, highlighting promising directions such as the development of more efficient computational screening tools, diversification of feedstock sources, and innovative reactor and catalyst design strategies. This co-reduction pathway represents a potentially sustainable and carbon-neutral route for urea production, utilizing greenhouse gases and nitrogen pollutes as direct feedstocks.

尿素作为一种重要的氮肥和化学前体，通过博世-迈泽工艺面临不可持续的工业生产，该工艺依赖于能源密集型的哈伯-博世氨（NH3）并排放大量二氧化碳。在环境条件下，利用二氧化碳和可再生电力通过C-N偶联进行尿素电合成是一种很有前途的替代方法。然而，N2的高激活势垒（NN键能：941 kJ mol−1）限制了电合成效率。本文重点介绍了用氮氧化物（NOx）污染物（NO和N2O）代替N2作为活性氮源的新策略，这不仅可以解决N2活化的挑战，而且可以同时实现环境修复。系统地概述和讨论了NOx和CO2共还原的基本反应机理。随后，回顾深入到催化剂设计的关键方面，包括计算筛选方法和实验研究成果，以开发高效的催化系统。重点是分析目前阻碍实际实施的限制，包括低尿素产率（uir）和低法拉第效率（FE），低反应物浓度带来的挑战，以及与工业规模应用相关的经济障碍。最后，综述提出了克服这些障碍的未来展望，强调了有前途的方向，如开发更有效的计算筛选工具，原料来源多样化，以及创新的反应器和催化剂设计策略。这种共还原途径代表了一种潜在的可持续和碳中和的尿素生产途径，利用温室气体和氮污染作为直接原料。

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引用次数: 0

Highly Selective and Efficient Aerobic Epoxidation of Cyclooctene using Electrospun Co-doped Ceria Nanofiber Membranes 电纺丝共掺杂氧化铈纳米纤维膜对环烯高选择性、高效的好氧环氧化反应

Materials Today Catalysis

Pub Date : 2025-10-30 DOI: 10.1016/j.mtcata.2025.100127

Chathupama Abeyrathne , Mahmoud Aboelkheir , Isaac Olowookere , Md Sazid B. Sadeque , Haiyan Tan , Tamer Uyar , Mustafa S. Yavuz , Steven L. Suib

Herein, we present the successful synthesis of Co doped Ceria nanofiber catalysts. The synthesized catalysts exhibit uniform distributions of monomodal pore sizes and demonstrate high catalytic activities for the epoxidation of cyclooctene with high selectivity for cyclooctene epoxide and cyclooctene conversion without using any hazardous sacrificial oxidizing agents. Notably, they achieve exceptional selectivity toward cyclooctene epoxide and substantial cyclooctene conversion under aerobic conditions without using any hazardous sacrificial oxidizing agents. Additionally, this epoxidation process is both economically favorable and environmentally friendly, owing to low catalyst loading, ease of catalyst separation, and excellent reusability, yielding a unique catalyst system compared to those previously reported in the literature. Characterization of the synthesized catalysts was carried out using various analytical techniques, including Powder X-ray diffraction (PXRD), X-ray Fluorescence (XRF), Nitrogen (N₂) sorption studies, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS). These analyses provided a comprehensive understanding of the structural and chemical properties of the catalysts. Among the catalysts studied, the 5CoCe nanofiber catalyst (5 wt% Co-doped) exhibited the highest catalytic efficiency under aerobic conditions, achieving ≥ 99 % selectivity for cyclooctene epoxide and 96 % conversion of cyclooctene in the present study.

在此，我们成功地合成了Co掺杂的二氧化铈纳米纤维催化剂。合成的催化剂具有均匀的单模孔径分布，对环烯环氧化反应和环烯转化具有较高的选择性，且不使用任何有害的牺牲氧化剂。值得注意的是，它们在有氧条件下实现了对环氧环烯的特殊选择性和大量的环氧环烯转化，而不使用任何有害的牺牲氧化剂。此外，由于催化剂负载低，易于分离，并且具有良好的可重复使用性，这种环氧化工艺具有经济效益和环境友好性，与以前的文献报道相比，产生了独特的催化剂体系。采用粉末x射线衍射（PXRD）、x射线荧光（XRF）、氮（N2）吸附、扫描电子显微镜（SEM）、高分辨率透射电子显微镜（HR-TEM）和x射线光电子能谱（XPS）等多种分析技术对合成的催化剂进行了表征。这些分析提供了对催化剂结构和化学性质的全面了解。在所研究的催化剂中，5CoCe纳米纤维催化剂（5 wt%共掺杂）在有氧条件下表现出最高的催化效率，在本研究中对环氧环烯的选择性≥ 99 %，对环氧环烯的转化率为96 %。

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引用次数: 0

Facet-specific nitrogen vacancy engineering in BaMO2N (M = Ta, Nb) for enhanced electrochemical ammonia production: Insights from first-principles calculations BaMO2N （M = Ta, Nb）中特定面氮空位工程用于增强电化学制氨：来自第一性原理计算的见解

Materials Today Catalysis

Pub Date : 2025-10-06 DOI: 10.1016/j.mtcata.2025.100125

Santhanamoorthi Nachimuthu , Che-Chih Chu , Zhong-Lun Li , Kenta Hongo , Ryo Maezono , Yuji Masubuchi , Jyh-Chiang Jiang

Developing efficient electrocatalysts for the electrochemical nitrogen (N₂) reduction reaction (eNRR) under ambient conditions is essential for sustainable ammonia (NH₃) production. In this study, we have used density functional theory (DFT) calculations to investigate the eNRR performance of two perovskite oxynitrides, BaTaO₂N and BaNbO₂N. We have systematically analyzed the reduction pathways and free energy profiles along both distal and alternating pathways on the (0 0 1) and (1 0 0) facets to evaluate the influence of surface orientation on catalytic performance. Our results show that the pristine surfaces exhibit weak N₂ adsorption and require a high Gibbs free energy (ΔG > 1.8 eV) for the initial protonation step, thereby limiting their intrinsic catalytic activity for direct NH₃ formation. We further explore defect engineering via the Mars-van Krevelen (MvK) mechanism, wherein lattice anions (nitrogen and oxygen) participate in vacancy formation and subsequent N₂ activation. On the BaNbO₂N (0 0 1) surface, lattice nitrogen can be readily protonated and reduced to NH₃, forming nitrogen vacancies that act as catalytic sites to facilitate N₂ adsorption and activation, thereby restoring the catalytic surface for sustained NH₃ production. Notably, the nitrogen-vacant surface (N_v-BaNbO₂N (0 0 1)) exhibits significantly enhanced N₂ adsorption, with a lower Gibbs free energy change (ΔG = 0.18 eV) for the first protonation step, and a thermodynamically favorable NH₃ desorption process. Furthermore, the reduced surface strongly suppresses the competing hydrogen evolution reaction (HER), thereby promoting high selectivity for NH₃ production under ambient conditions. This theoretical study offers valuable insights into the design of perovskite oxynitride-based electrocatalysts, offering a promising strategy for sustainable and economically viable NH₃ synthesis.

开发高效的环境条件下电化学氮（N2）还原反应（eNRR）电催化剂是实现氨（NH3）可持续生产的关键。在这项研究中，我们使用密度泛函理论（DFT）计算研究了两种钙钛矿氧氮化物BaTaO2N和BaNbO2N的eNRR性能。我们系统地分析了（0 0 1）和（1 0 0）面的远端和交替路径上的还原路径和自由能分布，以评估表面取向对催化性能的影响。我们的研究结果表明，原始表面表现出弱的N2吸附，并且在初始质子化步骤中需要很高的吉布斯自由能（ΔG > 1.8 eV），从而限制了它们直接形成NH3的内在催化活性。我们进一步通过Mars-van Krevelen （MvK）机制探索缺陷工程，其中晶格阴离子（氮和氧）参与空位形成和随后的N2活化。在BaNbO2N（0 0 1）表面，晶格氮可以很容易地质子化并还原为NH3，形成氮空位作为催化位点，促进N2的吸附和活化，从而恢复催化表面以持续产生NH3。值得注意的是，氮空表面（Nv-BaNbO2N(0 0 1)）表现出明显增强的N2吸附，在质子化第一步具有较低的吉布斯自由能变化（ΔG = 0.18 eV），并且具有热力学有利的NH3脱附过程。此外，还原表面强烈抑制了竞争性析氢反应（HER），从而促进了环境条件下NH3的高选择性生成。该理论研究为设计基于氧氮化钙钛矿的电催化剂提供了有价值的见解，为可持续和经济可行的NH3合成提供了有前途的策略。

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引用次数: 0

Electrocatalytic performance in direct ethanol fuel cells: Contributions of monometallic, bimetallic, and trimetallic catalysts 直接乙醇燃料电池的电催化性能：单金属、双金属和三金属催化剂的贡献

Materials Today Catalysis

Pub Date : 2025-09-15 DOI: 10.1016/j.mtcata.2025.100124

Pariksha Bishnoi , Kirti Mishra , Urvashi Sen , Samarjeet Singh Siwal

Over the recent past, there has been exponential growth in the advancements of clean energy sources and fuel cell technologies. Fuel cells are the electrochemical devices that are able to convert chemical energy of a fuel into electrical energy. This paper studies the electrocatalytic activity of monometallic, bimetallic, and trimetallic catalysts in direct ethanol fuel cells (DEFCs). Monometallic catalysts, for example, platinum (Pt) and palladium (Pd), along with other transition metals, find application but have complications like poor tolerance to carbon monoxide (CO) and incomplete oxidation of ethanol. Furthermore, bimetallic catalysts, e.g., Pt-Ru and Pt-Sn, have shown significant advancements because of these synergistic enhancements, leading to improved performance, stability, and CO poisoning resistance. Another group of catalysts, trimetallic (e.g., Pt-Ru-Sn), have both high efficiency and long-lasting capabilities, making them stand out as applicable in most DEFC practical scenarios. This research proves the advantage of multi-metallic catalysts in developing the DEFC technology while solving both major factors of catalyst deterioration and their price.

近年来，清洁能源和燃料电池技术的发展呈指数级增长。燃料电池是一种能将燃料的化学能转化为电能的电化学装置。研究了单金属、双金属和三金属催化剂在直接乙醇燃料电池（DEFCs）中的电催化活性。单金属催化剂，例如铂（Pt）和钯（Pd），以及其他过渡金属，可以应用，但有一些并发症，如对一氧化碳（CO）的耐受性差和乙醇的不完全氧化。此外，双金属催化剂，如Pt-Ru和Pt-Sn，由于这些协同增强，表现出显著的进步，从而提高了性能、稳定性和抗CO中毒能力。另一组催化剂，三金属（例如，Pt-Ru-Sn），具有高效率和持久的性能，使其在大多数DEFC实际场景中脱颖而出。本研究证明了多金属催化剂在发展DEFC技术方面的优势，同时解决了催化剂变质的主要因素和价格问题。

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引用次数: 0