Pub Date : 2025-11-19DOI: 10.1016/j.checat.2025.101577
Zihang Deng, Jeffrey N. Johnston
Zihang Deng received his PhD degree from Vanderbilt University, where his research focused on developing asymmetric organocatalyst generality and employing high-throughput screening in organocatalysis. He is currently a postdoctoral scholar at Harvard University (with Richard Liu), where he develops innovative coupling reagents for bioconjugation.Jeffrey N. Johnston is a Stevenson Professor of Chemistry at Vanderbilt University, where he leads a research program that develops new reactions and reagents for the synthesis of complex natural products and therapeutics. The integrative design of sustainable catalysts with strategic fragment-assembling schemes and the acceleration of the discovery phase in enantioselective catalysis are high priorities.
邓子航博士毕业于美国范德比尔特大学，主要研究方向为不对称有机催化剂的开发及在有机催化中的高通量筛选。他目前是哈佛大学博士后学者（与Richard Liu合作），在那里他开发了用于生物偶联的创新偶联试剂。Jeffrey N. Johnston是Vanderbilt University的史蒂文森化学教授，在那里他领导一个研究项目，开发用于合成复杂天然产物和治疗的新反应和试剂。可持续催化剂与战略性片段组装方案的整合设计和加速对映选择性催化的发现阶段是当务之急。
{"title":"Performance-enhancing asymmetric catalysis unlocks tuning without rebuilding","authors":"Zihang Deng, Jeffrey N. Johnston","doi":"10.1016/j.checat.2025.101577","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101577","url":null,"abstract":"Zihang Deng received his PhD degree from Vanderbilt University, where his research focused on developing asymmetric organocatalyst generality and employing high-throughput screening in organocatalysis. He is currently a postdoctoral scholar at Harvard University (with Richard Liu), where he develops innovative coupling reagents for bioconjugation.Jeffrey N. Johnston is a Stevenson Professor of Chemistry at Vanderbilt University, where he leads a research program that develops new reactions and reagents for the synthesis of complex natural products and therapeutics. The integrative design of sustainable catalysts with strategic fragment-assembling schemes and the acceleration of the discovery phase in enantioselective catalysis are high priorities.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"132 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145545832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-18DOI: 10.1016/j.checat.2025.101570
Kexin Zhang, Xinyue Ni, Xiao Liang, Xiaoxin Zou
Proton exchange membrane water electrolysis (PEMWE) is increasingly recognized as a key technology for green hydrogen production in support of global decarbonization efforts. However, its large-scale deployment remains constrained by the reliance on scarce iridium (Ir) as the anode catalyst. While recent advances in anode catalyst design have improved Ir utilization, long-term scalability requires a more comprehensive Ir management approach. This perspective presents an integrated strategy for scalable PEMWE combining improved utilization and closed-loop recycling. We summarize current progress in anode catalyst innovation, catalyst layer architecture, and non-catalyst-component optimization, with a particular emphasis on the urgency and technical feasibility of Ir recovery to align with future deployment scenarios. To realize the full potential of green hydrogen, we call for the adoption of this integrated Ir management framework across research, industry, and policy domains.
{"title":"Iridium management strategies for scalable proton exchange membrane water electrolysis","authors":"Kexin Zhang, Xinyue Ni, Xiao Liang, Xiaoxin Zou","doi":"10.1016/j.checat.2025.101570","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101570","url":null,"abstract":"Proton exchange membrane water electrolysis (PEMWE) is increasingly recognized as a key technology for green hydrogen production in support of global decarbonization efforts. However, its large-scale deployment remains constrained by the reliance on scarce iridium (Ir) as the anode catalyst. While recent advances in anode catalyst design have improved Ir utilization, long-term scalability requires a more comprehensive Ir management approach. This perspective presents an integrated strategy for scalable PEMWE combining improved utilization and closed-loop recycling. We summarize current progress in anode catalyst innovation, catalyst layer architecture, and non-catalyst-component optimization, with a particular emphasis on the urgency and technical feasibility of Ir recovery to align with future deployment scenarios. To realize the full potential of green hydrogen, we call for the adoption of this integrated Ir management framework across research, industry, and policy domains.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"154 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145536470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-18DOI: 10.1016/j.checat.2025.101569
Diego Mateo, Enrique V. Ramos-Fernandez, Jorge Gascon
Photo-adaptive catalysis enables dynamic modulation of catalytic activity and selectivity using light as an external stimulus. When coupled with photo-thermal processes, it allows precise control over thermal and non-thermal light contributions to catalytic performance. This viewpoint critically examines recent advances in heterogeneous photo-switchable systems, emphasizing light-induced structural and electronic transformations such as reversible vacancy generation and redox dynamics in plasmonic metals. Particular attention is given to the synergy between photonic and thermal effects that govern the transient nature of active sites. We also discuss progress in operando characterization techniques capable of capturing fast structural and electronic changes, together with challenges related to reactor engineering, material stability, and scalability. Overall, integrating dynamic light control with heterogeneous catalysis provides a path toward programmable catalytic systems for demanding transformations, such as CO2 hydrogenation and ammonia synthesis.
{"title":"Light-controlled active-site engineering in photo-thermal catalysis","authors":"Diego Mateo, Enrique V. Ramos-Fernandez, Jorge Gascon","doi":"10.1016/j.checat.2025.101569","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101569","url":null,"abstract":"Photo-adaptive catalysis enables dynamic modulation of catalytic activity and selectivity using light as an external stimulus. When coupled with photo-thermal processes, it allows precise control over thermal and non-thermal light contributions to catalytic performance. This viewpoint critically examines recent advances in heterogeneous photo-switchable systems, emphasizing light-induced structural and electronic transformations such as reversible vacancy generation and redox dynamics in plasmonic metals. Particular attention is given to the synergy between photonic and thermal effects that govern the transient nature of active sites. We also discuss progress in <em>operando</em> characterization techniques capable of capturing fast structural and electronic changes, together with challenges related to reactor engineering, material stability, and scalability. Overall, integrating dynamic light control with heterogeneous catalysis provides a path toward programmable catalytic systems for demanding transformations, such as CO<sub>2</sub> hydrogenation and ammonia synthesis.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"175 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145536246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-11DOI: 10.1016/j.checat.2025.101566
Rongzhen Wu, Tong Cai, Zhenyang Liu, Xinfeng Chen, Yasutaka Nagaoka, Paul G. Williard, Ou Chen
We report the first application of lead-free Cs2AgBiBr6 double-perovskite nanoplatelets as efficient photocatalysts for solid-phase photooxidation reactions. These 2D nanomaterials exhibit excellent performance in the solvent-free ring-closing oxidation of 1,2-benzenedimethanol, achieving a remarkable yield of 98.2%. The high catalytic activity is attributed to the large, exposed surface area and favorable catalyst-substrate interactions. Mechanistic investigations, including radical trapping experiments, reveal a free-radical-driven oxidation pathway. This study extends the applications of halide perovskite nanomaterials in polar organic substrate catalysis by eliminating the need for a polar solvent environment, demonstrating the promising potential of lead-free halide perovskites in solid-phase photocatalysis while providing fundamental insights into their applications for sustainable chemical transformations.
{"title":"Lead-free Cs2AgBiBr6 double-perovskite nanoplatelets as photocatalysts for solid-phase oxidation of 1,2-benzenedimethanol","authors":"Rongzhen Wu, Tong Cai, Zhenyang Liu, Xinfeng Chen, Yasutaka Nagaoka, Paul G. Williard, Ou Chen","doi":"10.1016/j.checat.2025.101566","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101566","url":null,"abstract":"We report the first application of lead-free Cs<sub>2</sub>AgBiBr<sub>6</sub> double-perovskite nanoplatelets as efficient photocatalysts for solid-phase photooxidation reactions. These 2D nanomaterials exhibit excellent performance in the solvent-free ring-closing oxidation of 1,2-benzenedimethanol, achieving a remarkable yield of 98.2%. The high catalytic activity is attributed to the large, exposed surface area and favorable catalyst-substrate interactions. Mechanistic investigations, including radical trapping experiments, reveal a free-radical-driven oxidation pathway. This study extends the applications of halide perovskite nanomaterials in polar organic substrate catalysis by eliminating the need for a polar solvent environment, demonstrating the promising potential of lead-free halide perovskites in solid-phase photocatalysis while providing fundamental insights into their applications for sustainable chemical transformations.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"75 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145485877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-11DOI: 10.1016/j.checat.2025.101565
Xiao-Yan Huang, Run-Ze Zhang, Lie Zou, Yi Zhang, Jin-Feng Li, Ze-Yu Zhang, Hua Zhang, Qing-Chi Xu, Jian-Feng Li
The oxygen reduction reaction (ORR) is the cathodic process in fuel cells. Due to its slow kinetics, developing more active catalysts while minimizing fuel cell production costs is crucial. Monitoring intermediate species during the reaction would promote fundamental understanding of the ORR mechanism and rational design of better catalysts. This review goes over the application of in situ surface-enhanced Raman spectroscopy (SERS) to reveal the ORR mechanisms across various catalysts, such as single-crystal electrodes, nanocatalysts, and single-atom catalysts (SACs). It covers techniques like the “borrowing” SERS strategy, shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), and tip-enhanced Raman spectroscopy (TERS) used in ORR studies. These methods enable in situ observation of reaction intermediates and active sites. The insights gained contribute to understanding the fundamental ORR processes and aid in designing more effective catalysts. Additionally, this work can serve as a reference for investigating other electrocatalytic reaction mechanisms.
{"title":"In situ Raman study of oxygen reduction reactions on model and nanocatalysts","authors":"Xiao-Yan Huang, Run-Ze Zhang, Lie Zou, Yi Zhang, Jin-Feng Li, Ze-Yu Zhang, Hua Zhang, Qing-Chi Xu, Jian-Feng Li","doi":"10.1016/j.checat.2025.101565","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101565","url":null,"abstract":"The oxygen reduction reaction (ORR) is the cathodic process in fuel cells. Due to its slow kinetics, developing more active catalysts while minimizing fuel cell production costs is crucial. Monitoring intermediate species during the reaction would promote fundamental understanding of the ORR mechanism and rational design of better catalysts. This review goes over the application of <em>in situ</em> surface-enhanced Raman spectroscopy (SERS) to reveal the ORR mechanisms across various catalysts, such as single-crystal electrodes, nanocatalysts, and single-atom catalysts (SACs). It covers techniques like the “borrowing” SERS strategy, shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), and tip-enhanced Raman spectroscopy (TERS) used in ORR studies. These methods enable <em>in situ</em> observation of reaction intermediates and active sites. The insights gained contribute to understanding the fundamental ORR processes and aid in designing more effective catalysts. Additionally, this work can serve as a reference for investigating other electrocatalytic reaction mechanisms.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"17 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145485876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-16DOI: 10.1016/j.checat.2025.101520
Jill K. Wenderott
Jill K. Wenderott is the Anne Stevens Assistant Professor of Materials Science and Engineering at Drexel University, where her research group focuses on informed synthesis of functional inorganic materials for use in energy and environmental applications. She completed her BS in physics at the University of Kansas before receiving her PhD in materials science and engineering from the University of Michigan. After her PhD, she was a postdoc in the Department of Materials Science and Engineering at Northwestern University and subsequently a postdoctoral appointee at Argonne National Laboratory in the Materials Science Division.
{"title":"Mixed-anion materials as an emerging material platform for photocatalysis","authors":"Jill K. Wenderott","doi":"10.1016/j.checat.2025.101520","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101520","url":null,"abstract":"Jill K. Wenderott is the Anne Stevens Assistant Professor of Materials Science and Engineering at Drexel University, where her research group focuses on informed synthesis of functional inorganic materials for use in energy and environmental applications. She completed her BS in physics at the University of Kansas before receiving her PhD in materials science and engineering from the University of Michigan. After her PhD, she was a postdoc in the Department of Materials Science and Engineering at Northwestern University and subsequently a postdoctoral appointee at Argonne National Laboratory in the Materials Science Division.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"42 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-16DOI: 10.1016/j.checat.2025.101548
Shashwati C. da Cunha, Joaquin Resasco
Most research on low-temperature CO2 electrolysis has focused on aqueous electrolytes, primarily because non-aqueous systems require high cell voltages. However, CO2 reduction (CO2R) in aqueous electrolytes competes with hydrogen evolution and requires many electron transfers to produce C2+ molecules, challenges that can be mitigated in non-aqueous electrolytes. In this forward-looking techno-economic assessment, we model the costs of non-aqueous CO2R. We show that CO2R to oxalic acid—a two-electron C2 product formed in aprotic electrolytes—is surprisingly affordable, although non-aqueous CO production is expensive. Using parameters from the largest collection of literature data on CO2R in aprotic non-aqueous electrolytes, we find that oxalic acid would cost $2.87/kgoxalic acid in a small-scale process. A commercial-scale plant would lower the product cost to $1.56/kgoxalic acid, approaching current market prices. Capital costs are dominated by product separation and operating costs mostly by stack replacement and electricity to drive the high required cell voltage. We present a roadmap toward cost-competitive non-aqueous CO2R to oxalic acid, a pathway to scale-up that has been overlooked compared to aqueous CO2 electrolysis.
{"title":"Techno-economic assessment of non-aqueous CO2 reduction","authors":"Shashwati C. da Cunha, Joaquin Resasco","doi":"10.1016/j.checat.2025.101548","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101548","url":null,"abstract":"Most research on low-temperature CO<sub>2</sub> electrolysis has focused on aqueous electrolytes, primarily because non-aqueous systems require high cell voltages. However, CO<sub>2</sub> reduction (CO<sub>2</sub>R) in aqueous electrolytes competes with hydrogen evolution and requires many electron transfers to produce C<sub>2+</sub> molecules, challenges that can be mitigated in non-aqueous electrolytes. In this forward-looking techno-economic assessment, we model the costs of non-aqueous CO<sub>2</sub>R. We show that CO<sub>2</sub>R to oxalic acid—a two-electron C<sub>2</sub> product formed in aprotic electrolytes—is surprisingly affordable, although non-aqueous CO production is expensive. Using parameters from the largest collection of literature data on CO<sub>2</sub>R in aprotic non-aqueous electrolytes, we find that oxalic acid would cost $2.87/kg<sub>oxalic acid</sub> in a small-scale process. A commercial-scale plant would lower the product cost to $1.56/kg<sub>oxalic acid</sub>, approaching current market prices. Capital costs are dominated by product separation and operating costs mostly by stack replacement and electricity to drive the high required cell voltage. We present a roadmap toward cost-competitive non-aqueous CO<sub>2</sub>R to oxalic acid, a pathway to scale-up that has been overlooked compared to aqueous CO<sub>2</sub> electrolysis.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"1 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-16DOI: 10.1016/j.checat.2025.101549
Ying Yang, Yuyan Wan, Ning Yan
Recently, Sargent’s group reported an efficient route of electrochemical ethylene-to-ethylene glycol conversion via redox mediators with high rate and selectivity. This anodic reaction can be paired with the cathodic CO2 reduction or CO2 capture. In addition to minimizing overall energy consumption, the ingeniously selected cathodic process can optimize the microenvironment at the anode toward higher selectivity and lower electrolysis voltage.
{"title":"Mediated electrosynthesis for greener ethylene glycol production","authors":"Ying Yang, Yuyan Wan, Ning Yan","doi":"10.1016/j.checat.2025.101549","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101549","url":null,"abstract":"Recently, Sargent’s group reported an efficient route of electrochemical ethylene-to-ethylene glycol conversion via redox mediators with high rate and selectivity. This anodic reaction can be paired with the cathodic CO<sub>2</sub> reduction or CO<sub>2</sub> capture. In addition to minimizing overall energy consumption, the ingeniously selected cathodic process can optimize the microenvironment at the anode toward higher selectivity and lower electrolysis voltage.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"40 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-16DOI: 10.1016/j.checat.2025.101547
Jorrit Bleeker, Lisanne C. Bakker, Sue S.J. van Deursen, Timo J.J.M. van Overveld, Katie M.R. Lawrence, Isabell Bagemihl, Giacomo Lastrucci, Duco Bosma, Christiaan V. Schinkel, Evert C. Wagner, J. Ruud van Ommen, David A. Vermaas
Electrochemical CO2 reduction (CO2R) is a promising technology for carbon recycling and energy storage. While gas-fed CO2R is currently the best practice because it facilitates fast mass transport, CO2R in water offers potential advantages such as avoiding salt formation, facile water control, and easier integration with CO2 capture. In this work, we enhance mass transport in an aqueous CO2 electrolyzer using fast pressure pulses (50 Hz, 1.2 bar) with a vibratory pump typically found in coffee machines. We demonstrate a limiting current density of 87 mA cm−2 toward CO2R products—nearly three times higher than without pulses. The current density can be further increased by leveraging the peak-to-peak pressure amplitude or pump frequency, as shown through particle image velocimetry (PIV) and an order-of-magnitude scaling analysis. Although challenges remain, such as pump energy consumption, contamination, heating, and pressure-wave damping, the pressure-pulsed concept is a promising direction for aqueous CO2R.
电化学CO2还原（CO2R）是一种很有前途的碳回收和储能技术。虽然气载CO2R是目前的最佳实践，因为它有助于快速的物质运输，但水中的CO2R具有潜在的优势，如避免盐的形成，易于控制水，更容易与二氧化碳捕获相结合。在这项工作中，我们使用快速压力脉冲（50 Hz, 1.2 bar）和通常在咖啡机中发现的振动泵来增强含水CO2电解槽中的质量输运。我们证明了CO2R产品的极限电流密度为87 mA cm - 2，几乎是没有脉冲的三倍。如粒子图像测速（PIV）和数量级缩放分析所示，可以通过利用峰值压力幅值或泵频进一步提高电流密度。尽管仍存在一些挑战，如泵能耗、污染、加热和压力波阻尼，但压力脉冲的概念是含水CO2R的一个有前途的方向。
{"title":"Pressure-pulsed flow triples mass transport in aqueous CO2 electrolysis","authors":"Jorrit Bleeker, Lisanne C. Bakker, Sue S.J. van Deursen, Timo J.J.M. van Overveld, Katie M.R. Lawrence, Isabell Bagemihl, Giacomo Lastrucci, Duco Bosma, Christiaan V. Schinkel, Evert C. Wagner, J. Ruud van Ommen, David A. Vermaas","doi":"10.1016/j.checat.2025.101547","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101547","url":null,"abstract":"Electrochemical CO<sub>2</sub> reduction (CO<sub>2</sub>R) is a promising technology for carbon recycling and energy storage. While gas-fed CO<sub>2</sub>R is currently the best practice because it facilitates fast mass transport, CO<sub>2</sub>R in water offers potential advantages such as avoiding salt formation, facile water control, and easier integration with CO<sub>2</sub> capture. In this work, we enhance mass transport in an aqueous CO<sub>2</sub> electrolyzer using fast pressure pulses (50 Hz, 1.2 bar) with a vibratory pump typically found in coffee machines. We demonstrate a limiting current density of 87 mA cm<sup>−2</sup> toward CO<sub>2</sub>R products—nearly three times higher than without pulses. The current density can be further increased by leveraging the peak-to-peak pressure amplitude or pump frequency, as shown through particle image velocimetry (PIV) and an order-of-magnitude scaling analysis. Although challenges remain, such as pump energy consumption, contamination, heating, and pressure-wave damping, the pressure-pulsed concept is a promising direction for aqueous CO<sub>2</sub>R.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"97 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-16DOI: 10.1016/j.checat.2025.101539
Devthade Vidyasagar, Wonyong Choi
The selective photoconversion of CO2 to ethylene has been hindered by kinetic and thermodynamic limitations. Two recent studies, published in Nature Catalysis and Nature Communications, reveal how precise control over the geometry and electronic structure of catalytic sites can overcome these bottlenecks to enable record-setting yields for CO2-to-ethylene conversion under mild conditions.
{"title":"Engineering catalytic sites for CO2-to-ethylene photoconversion","authors":"Devthade Vidyasagar, Wonyong Choi","doi":"10.1016/j.checat.2025.101539","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101539","url":null,"abstract":"The selective photoconversion of CO<sub>2</sub> to ethylene has been hindered by kinetic and thermodynamic limitations. Two recent studies, published in <em>Nature Catalysis</em> and <em>Nature Communications</em>, reveal how precise control over the geometry and electronic structure of catalytic sites can overcome these bottlenecks to enable record-setting yields for CO<sub>2</sub>-to-ethylene conversion under mild conditions.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"102 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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