EES catalysis最新文献

{"title":"Correction: Advanced bifunctional catalyst design for rechargeable zinc–air batteries","authors":"Tao Wang, Zezhong Shi, Faxing Wang, Jiarui He, Yiren Zhong, Yuan Ma, Zhi Zhu, Xin-Bing Cheng, Kenneth I. Ozoemena and Yuping Wu","doi":"10.1039/D4EY90010C","DOIUrl":"10.1039/D4EY90010C","url":null,"abstract":"<p >Correction for ‘Advanced bifunctional catalyst design for rechargeable zinc–air batteries’ by Tao Wang <em>et al.</em>, <em>EES. Catal.</em>, 2024, https://doi.org/10.1039/d4ey00014e.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d4ey90010c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140798528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A bi-functional air electrode developed from a dual-MOF strategy for high-performance zinc–air batteries†","authors":"Yasir Arafat, Muhammad Rizwan Azhar, Yijun Zhong, Xiaomin Xu, Moses O. Tadé and Zongping Shao","doi":"10.1039/D4EY00008K","DOIUrl":"10.1039/D4EY00008K","url":null,"abstract":"<p >A durable, high-performing and cost-effective bi-functional catalyst toward oxygen reduction/evolution reactions (ORR/OER) is the key towards the practical application of Zn–air batteries (ZABs). Here, we report a new concept of combining pristine and carbonized MOFs for developing a bifunctional electrocatalyst for ZABs, where the pristine MOF acts as a support for the OER catalysts and the carbonized MOF acts as the ORR catalyst and enhances the electronic conductivity. By electroless NiP-plating over the surface of the Fe-containing 3D MOF (MIL-100), the catalyst shows superior activity for the OER, delivering a current density of 10 mA cm<small>⁻²</small> at an overpotential of 295 mV together with a low Tafel slope of 62 mV dec<small>⁻¹</small>. A 3D porous MOF serves as a substrate for growing NiP with maximal exposed active sites and the iron in the MOF interacts with NiP to further boost the intrinsic OER activity. Subsequently, we introduce carbonized ZIF-67 (C-ZIF-67) into NiP-MIL-100 to build a bifunctional catalyst, where C-ZIF-67 not only provides ORR catalytic activity but also creates a synergetic effect with NiP-MIL-100, and to expedite the charge/mass transfer. Using this air electrode for ZABs, an excellent bifunctionality with a small potential gap (0.78 V), a high peak power density (203 mW cm<small>⁻²</small>) and robust cycling over a period of 500 h were achieved.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d4ey00008k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140628610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural selectivity of supported Pd nanoparticles: selective ethanol ammoxidation to acetonitrile†","authors":"Khaled Mohammed, Reza Vakili, Donato Decarolis, Shaojun Xu, Luke Keenan, Apostolos Kordatos, Nikolay Zhelev, Chris K. Skylaris, Marina Carravetta, Emma K. Gibson, Haresh Manyar, Alexandre Goguet and Peter P. Wells","doi":"10.1039/D4EY00044G","DOIUrl":"10.1039/D4EY00044G","url":null,"abstract":"<p >The need to achieve net zero requires decarbonisation across all areas of our industrialised society, including the production of chemicals. One example is the production of acetonitrile, which currently relies on fossil carbon. Recently, supported Pd nanoparticles have been shown to promote the selective transformation of bio-derived ethanol to acetonitrile. Elsewhere, current research has demonstrated the importance of interstitial structures of Pd in promoting specific transformations. In this study, we demonstrate through a spatially resolved <em>operando</em> energy-dispersive-EXAFS (EDE) technique that selectivity to acetonitrile (up to 99%) is concurrent with the formation of a PdN<small>_<em>x</em></small> phase. This was evidenced from the features observed in the X-ray absorption near edge structure that were validated against PdN<small>_<em>x</em></small> samples made <em>via</em> known synthesis methods. Above 240 °C, the Pd nanoparticles became progressively oxidised which led to the production of unwanted byproducts, primarily CO<small>₂</small>. The spatially resolved analysis indicated that the Pd speciation was homogeneous across the catalyst profile throughout the series of studies performed. This work resolved the structural selectivity of Pd nanoparticles that directs ethanol ammoxidation towards acetonitrile, and provides important information on the performance descriptors required to advance this technology.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d4ey00044g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probing the active sites of oxide encapsulated electrocatalysts with controllable oxygen evolution selectivity†","authors":"William D. H. Stinson, Robert S. Stinson, Jingjing Jin, Zejie Chen, Mingjie Xu, Fikret Aydin, Yinxian Wang, Marcos F. Calegari Andrade, Xiaoqing Pan, Tuan Anh Pham, Katherine E. Hurst, Tadashi Ogitsu, Shane Ardo and Daniel V. Esposito","doi":"10.1039/D4EY00074A","DOIUrl":"10.1039/D4EY00074A","url":null,"abstract":"<p >Electrocatalysts encapsulated by nanoscopic overlayers can control the rate of redox reactions at the outer surface of the overlayer or at the buried interface between the overlayer and the active catalyst, leading to complex behavior in the presence of two competing electrochemical reactions. This study investigated oxide encapsulated electrocatalysts (OECs) comprised of iridium (Ir) thin films coated with an ultrathin (2–10 nm thick) silicon oxide (SiO<small>_<em>x</em></small>) or titanium oxide (TiO<small>_<em>x</em></small>) overlayer. The performance of SiO<small>_<em>x</em></small>|Ir and TiO<small>_<em>x</em></small>|Ir thin film electrodes towards the oxygen evolution reaction (OER) and Fe(<small>II</small>)/Fe(<small>III</small>) redox reactions were evaluated. An improvement in selectivity towards the OER was observed for all OECs. Overlayer properties, namely ionic and electronic conductivity, were assessed using a combination of electroanalytical methods and molecular dynamics simulations. SiO<small>_<em>x</em></small> and TiO<small>_<em>x</em></small> overlayers were found to be permeable to H<small>₂</small>O and O<small>₂</small> such that the OER can occur at the MO<small>_<em>x</em></small>|Ir (M = Ti, Si) buried interface, which was further supported with molecular dynamics simulations of model SiO<small>₂</small> coatings. In contrast, Fe(<small>II</small>)/Fe(<small>III</small>) redox reactions occur to the same degree with TiO<small>_<em>x</em></small> overlayers having thicknesses less than 4 nm as bare electrocatalyst, while SiO<small>_<em>x</em></small> overlayers inhibit redox reactions at all thicknesses. This observation is attributed to differences in electronic transport between the buried interface and outer overlayer surface, as measured with through-plane conductivity measurements of wetted overlayer materials. These findings reveal the influence of oxide overlayer properties on the activity and selectivity of OECs and suggest opportunities to tune these properties for a wide range of electrochemical reactions.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d4ey00074a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140582631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epitaxial heterointerfacial electron bridge synchronizes oxygen evolution activity and stability on a layered double hydroxide surface†","authors":"Jia Wang, Zelin Zhao, Min Guo, Liang Xiao, Haolin Tang, Jiantao Li, Zongkui Kou and Junsheng Li","doi":"10.1039/D4EY00037D","DOIUrl":"10.1039/D4EY00037D","url":null,"abstract":"<p >Scalable green hydrogen production <em>via</em> electrocatalytic water splitting is largely restricted by the insufficient activity and stability of oxygen evolution reaction (OER) catalysts at the anode. As a class of the most active OER catalysts in alkaline electrolyzers, the application of layered double hydroxides (LDHs) remains a main challenge owing to the unstable lattice oxygen dissolution due to the dominant lattice oxygen-involving OER mechanism during long-term operation. Herein, we found that using an epitaxial hetero-interfacing nickel hydroxide (namely Ni(OH)<small>₂</small>) as an electron bridge between an active FeCo LDH and Ni foam support to form an LDH*/NFO catalyst, the electronic storage capacity around the Fermi level (−0.5 to +0.5 eV, e-D<small>_FE</small>) sharply increases from 0.93 per cell to 1.51 per cell. Subsequently, we demonstrate that this high e-D<small>_FE</small> enables ceaseless and fast power injection into the kinetic process of intermediate species conversion and inhibits lattice oxygen dissolution in the active FeCo LDH. Consequently, it demonstrated a low OER overpotential of 246 mV at a current density of 100 mA cm<small>⁻²</small> and ultrahigh stability for up to 3500 hours with an ultraslow overpotential increase rate of 9.4 × 10<small>⁻³</small> mV h<small>⁻¹</small>. Therefore, we developed an epitaxial hetero-interfacial electron bridging strategy to synchronize the activity and stability of available catalysts for scalable green hydrogen production <em>via</em> electrocatalytic water splitting.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d4ey00037d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140582636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zeolite catalysts for non-oxidative ethane dehydrogenation to ethylene","authors":"Lu Liu, Liang Wang and Feng-Shou Xiao","doi":"10.1039/D4EY00031E","DOIUrl":"10.1039/D4EY00031E","url":null,"abstract":"<p >The conversion of ethane to ethylene is crucial for deriving platform chemicals from non-petroleum feedstock. However, it currently relies on steam cracking technology, which involves high temperatures and large reactors. The catalytic dehydrogenation of ethane (EDH) could resolve these issues, but its efficiency is often limited due to thermodynamics, leading to low conversion and coke formation. These challenges make it difficult for catalytic EDH to compete economically with steam cracking. Recent studies show that rational design of catalysts, such as fixing metal nanoclusters within zeolite micropores or isolated metal sites on the zeolite framework, can enhance catalytic performances. These designs lower energy barriers for carbon–hydrogen bond activation, hinder deep dehydrogenation to coke, and provide sinter-resistant metal sites for durability. This review discusses the pivotal role of zeolite structures in catalysis and sums up the principles of catalyst design for efficient non-oxidative EDH. It aims to help in the development of more efficient zeolite catalysts and enhance the viability of catalytic EDH for potential industrialization.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d4ey00031e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140170934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into zero-gap CO2 electrolysis at elevated temperatures†","authors":"Carlos A. Giron Rodriguez, Nishithan C. Kani, Asger B. Moss, Bjørt Oladottir Joensen, Sahil Garg, Wanyu Deng, Terry Wilson, John R. Varcoe, Ib Chorkendorff and Brian Seger","doi":"10.1039/D3EY00224A","DOIUrl":"10.1039/D3EY00224A","url":null,"abstract":"<p >Renewable-powered CO<small>₂</small> electrolysis (CO<small>₂</small>E) is a promising strategy to reduce greenhouse gas emissions by transforming CO<small>₂</small> into valuable feedstocks. While recent studies in this field have focused on developing efficient catalyst materials or electrolyzer engineering, the operating temperature's effect has not been systematically examined for zero-gap electrolyzers. To examine the effects of operating temperature, a systematic investigation was conducted using zero-gap (MEA) Cu-based GDEs across a range from room temperature to 80 °C. Our results indicate that increasing the temperature improves CO<small>₂</small> mass transport, ionic conductivity, and water management, allowing for high catalytic activity toward CO<small>₂</small>E. At operating temperatures greater than 50 °C, selectivity shifted substantially towards CO, with surface enhanced infrared absorption spectroscopy (SEIRAS) showing a concomitant decrease in surface CO coverage at and above this temperature. As commercial electrolyzers will operate at elevated temperatures due to ohmic heating, they may produce a significantly different product distribution than the room-temperature electrolysis prevalent in the literature. Experiments at elevated temperatures demonstrated improved results for CO<small>₂</small>E with industrially relevant current densities (150 mA cm<small>⁻²</small>) over an extended operational period (&gt;200 hours). Additionally, we found that the heating method strongly affects product selectivity and the electrolyzer's performance, emphasizing the need to ensure proper heating while working under these reaction systems.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d3ey00224a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139987633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancements and opportunities in piezo-(photo)catalytic synthesis of value-added chemicals","authors":"Weiliang Qi, Yaping Fu, Enbo Liu, Zhixing Cheng, Yuxiu Sun, Siqi Liu and Minghui Yang","doi":"10.1039/D3EY00313B","DOIUrl":"10.1039/D3EY00313B","url":null,"abstract":"<p >Piezo-(photo)catalytic technologies offer a promising solution for accelerating energy diversification and addressing environmental pollution by converting mechanical and light energy into chemical energy. The application of piezo-(photo)catalytic technology not only meets the demands of a growing market but also contributes to environmental preservation. In this review, we summarize recent advancements in synthesizing value-added chemicals through piezo-(photo)catalytic technology, highlighting the principles of piezotronics and piezo-phototronics. We examine the fundamental processes involved in energy conversion and discuss the advantages of synthesized value-added chemicals using piezocatalytic technology. We explore different chemistries and reaction pathways, and categorize piezoelectric semiconductors based on performance in piezo-photocatalysis. Finally, we identify prospects, challenges, and potential solutions for future research and development in value-added chemical synthesis using piezo-(photo)catalytic technology.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d3ey00313b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139988008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Direction of oxygen evolution reaction electrocatalyst evaluation for an anion exchange membrane CO2 electrolyzer","authors":"Seontaek Kwon, Tae-Hoon Kong, Namgyoo Park, Pandiarajan Thangavel, Hojeong Lee, Seokmin Shin, Jihoo Cha and Youngkook Kwon","doi":"10.1039/D3EY00314K","DOIUrl":"10.1039/D3EY00314K","url":null,"abstract":"<p >CO<small>₂</small> electrolysis in membrane-electrode assemblies (MEAs) has come up one step closer to commercialization through compact cell design and high-current operation. However, while both cathodic and anodic reactions significantly affect the overall cell efficiency, the anodic oxygen evolution reaction (OER) has received much less attention compared to the cathodic CO<small>₂</small> reduction reaction (CO<small>₂</small>RR). More importantly, OER electrocatalysts for CO<small>₂</small> electrolysis are being developed independently of system design, despite their interconnected nature. Since the aqueous testing systems in which OER electrocatalysts have been developed do not reflect the complex local anodic environment inside an anion exchange membrane CO<small>₂</small> electrolyzer (AEMCE), electrocatalysts sensitive to local chemistry may have been optimized for incorrect operating conditions. Based on a comprehensive understanding of the local anodic environment inside the AEMCE, in this perspective, we scrutinize the limitations of conventional OER electrocatalyst development resulting from the discrepancy between aqueous testing systems and the existing MEA-type systems. To bridge these gaps, we suggest three electrocatalyst evaluation platforms that integrate reference electrodes to existing AEMCEs for reliable and genuine OER electrocatalyst assessment.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d3ey00314k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139910353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced bifunctional catalyst design for rechargeable zinc–air batteries","authors":"Tao Wang, Zezhong Shi, Faxing Wang, Jiarui He, Yiren Zhong, Yuan Ma, Zhi Zhu, Xin-Bing Cheng, Kenneth I. Ozoemena and Yuping Wu","doi":"10.1039/D4EY00014E","DOIUrl":"10.1039/D4EY00014E","url":null,"abstract":"<p >Zinc–air batteries have attracted more attention due to their high energy density, high safety, low cost, and environmental friendliness. Nevertheless, sluggish oxygen reaction kinetics at the air electrode seriously compromises their power density and cycling stability. As one of the main components, the catalyst significantly impacts the performance of zinc–air batteries. Finding high-performance bifunctional catalysts for both the oxygen reduction reaction and oxygen evolution reaction is of great importance for the practical application of zinc–air batteries. In this review, the history, merits and challenges of zinc–air batteries are introduced, the working principle of zinc–air batteries and the mechanisms of ORR and OER in air electrodes are analyzed deeply, and the research status of bifunctional catalysts that promote both ORR and OER kinetics is systematically reviewed. Finally, the pending problems that need to be solved in future research and the practical application of bifunctional catalysts in zinc–air batteries are discussed. This review aims to provide a valuable reference for the development of bifunctional catalysts for zinc–air batteries.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ey/d4ey00014e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139904072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}