Applied Catalysis B: Environmental最新文献_第6页

Interlayer single-atomic Fe−N4 sites on carbon-rich graphitic carbon nitride for notably enhanced photo-Fenton-like catalytic oxidation processes towards recalcitrant organic micropollutants 富碳氮化石墨上的层间单原子 Fe-N4 位点可显著增强对难降解有机微污染物的光-芬顿催化氧化过程

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-03 DOI: 10.1016/j.apcatb.2024.123695

Lang Qin, Jiaqi Meng, Guang Yang, Yue Pan, Xinchun Gao, Yuxin Yang, Yihang Guo

{"title":"Interlayer single-atomic Fe−N4 sites on carbon-rich graphitic carbon nitride for notably enhanced photo-Fenton-like catalytic oxidation processes towards recalcitrant organic micropollutants","authors":"Lang Qin, Jiaqi Meng, Guang Yang, Yue Pan, Xinchun Gao, Yuxin Yang, Yihang Guo","doi":"10.1016/j.apcatb.2024.123695","DOIUrl":"10.1016/j.apcatb.2024.123695","url":null,"abstract":"<div>Glucose-assisted supramolecule self-assembly of melamine and cyanuric acid in the presence of Fe(NO3)3 combined with thermal polymerization is designed to fabricate C-rich g-C3N4-embedded interlayer single-atomic Fe−N4 sites catalyst (Fe1/C-CN). Fe1/C-CN exhibits outstanding photo-Fenton-like catalytic oxidation activity towards typical recalcitrant organic micropollutants. For example, the pseudo-first-order kinetic constant of Fe1/C-CN photo-Fenton-like system is 7.5 and 21.1 times higher than Fe1/C-CN photocatalysis and Fenton-like systems in degradation of p-nitrophenol, and TOC removal efficiency reaches up to 100% after reaction proceeds for 4 h. Mechanism studies reveal that synergy of maximum Fe atom utilization efficiency and boosted photoexcited charge separation dynamics accelerates regeneration of ≡Fe(II) and efficient H2O2 activation of Fe1/C-CN, leading to plentiful active oxygen species for deep oxidation of organic micropollutants. Fe1/C-CN also shows a robust reusability in long-term remediation of organic micropollutants, attributing to interlayer Fe−N coordination interactions for preventing single Fe atoms from agglomeration and leaching to reaction media.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123695"},"PeriodicalIF":22.1,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

PdFe Alloy-Fe5C2 interfaces for efficient CO2 hydrogenation to higher alcohols 用于高效 CO2 加氢制取高级醇的钯铁合金-Fe5C2 介面

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-03 DOI: 10.1016/j.apcatb.2024.123691

Yanqiu Wang , Ying Zhou , Xinxin Zhang , Mingrui Wang , Tangkang Liu , Jinxing Wei , Guanghui Zhang , Xinlin Hong , Guoliang Liu

{"title":"PdFe Alloy-Fe5C2 interfaces for efficient CO2 hydrogenation to higher alcohols","authors":"Yanqiu Wang , Ying Zhou , Xinxin Zhang , Mingrui Wang , Tangkang Liu , Jinxing Wei , Guanghui Zhang , Xinlin Hong , Guoliang Liu","doi":"10.1016/j.apcatb.2024.123691","DOIUrl":"10.1016/j.apcatb.2024.123691","url":null,"abstract":"<div>Direct CO2 hydrogenation to higher alcohols (HA) is a promising route for high-value utilization of waste CO2, but developing active and stable catalysts remains a grand challenge. For this reaction, constructing multifunctional interfaces as active sites is required to fulfill controllable C-C coupling of alkyl and CO*/CHxO* species. Herein, we report a PdFe catalyst with abundant PdFe alloy-Fe5C2 interfaces via a PdFe alloy induced FeOx carbidization process, which can achieve HA yield of 86.5 mg gcat−1 h−1 with 26.5% selectivity at 300 ºC, 5 MPa, and 6000 mL gcat−1 h−1. The accelerated deactivation test unveils the PdFe catalyst exhibits better durability than the widely studied CuFe based catalysts against harsh conditions. Multiple in-situ characterization results unveil a synergetic mechanism for HA synthesis at the PdFe alloy-Fe5C2 interfaces, where PdFe alloy is responsible for CO formation and non-dissociative activation, while Fe5C2 phase promotes CO dissociation and chain propagation.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123691"},"PeriodicalIF":22.1,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Engineering Pt single atom catalyst with abundant lattice oxygen by dual nanospace confinement strategy for the efficient catalytic elimination of VOCs 通过双纳米空间致密化策略制造具有丰富晶格氧的铂单原子催化剂，以高效催化消除挥发性有机化合物

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-03 DOI: 10.1016/j.apcatb.2023.123687

Weigao Han , Weitong Ling , Peng Gao , Fang Dong , Zhicheng Tang

{"title":"Engineering Pt single atom catalyst with abundant lattice oxygen by dual nanospace confinement strategy for the efficient catalytic elimination of VOCs","authors":"Weigao Han , Weitong Ling , Peng Gao , Fang Dong , Zhicheng Tang","doi":"10.1016/j.apcatb.2023.123687","DOIUrl":"10.1016/j.apcatb.2023.123687","url":null,"abstract":"<div>Precisely constructing Pt single atom catalyst (SACs) with fine-tuned chemical environments is a vitally challenging issue, which has attracted peoples’ attentions. The activation of lattice oxygen linked to active sites is also a great challenge to heterogeneous catalysis. Herein, via a cage-encapsulating strategy, Pt single atom (SA) was accurately constructed by dual nanospace confinement of three-dimensional ordered macroporous (3DOM) CeO2 pore and Ce-MOFs nanocages. During calcination, CeO2 derived from Ce-MOF restricted the migration of Pt SA and prevented its agglomeration. With the construction of CeO2 nanocage, more active Pt-O2 bond was created. More active lattice oxygen was linked to Pt single atom. DFT calculation also confirmed VOCs molecules were more easily absorbed on the catalyst surface and CO was more easily oxidized to CO2. The 90% conversion temperature (T90) of Pt1/CeO2 @CeO2-0.2 (T90 = 268 °C) was 81 °C lower than the T90 of Pt1/CeO2 (T90 = 349 °C) on the catalytic combustion of benzene.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123687"},"PeriodicalIF":22.1,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ligand-induced reaction mechanism regulation on Sr/Nb2O5 for high-efficiency selective photocatalytic NO oxidation Sr/Nb2O5 上配体诱导的反应机制调节，实现高效选择性光催化氧化 NO

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-03 DOI: 10.1016/j.apcatb.2023.123688

Tianjiao Wu , Bibo Ma , Huanhuan Bai , Lin Wang , Yumei Zhang , Qingzhi Luo , Jing An , Huiying Mu , Desong Wang , Yandong Duan

{"title":"Ligand-induced reaction mechanism regulation on Sr/Nb2O5 for high-efficiency selective photocatalytic NO oxidation","authors":"Tianjiao Wu , Bibo Ma , Huanhuan Bai , Lin Wang , Yumei Zhang , Qingzhi Luo , Jing An , Huiying Mu , Desong Wang , Yandong Duan","doi":"10.1016/j.apcatb.2023.123688","DOIUrl":"10.1016/j.apcatb.2023.123688","url":null,"abstract":"<div>Developing highly efficient photocatalysts that selectively convert NO pollutants to NO3¯ while storing metabolic nitrogen for crops remains a great challenge. Simultaneously, there is a dearth of research investigating the relationship between the chemical environment and the activity of catalytic sites. Herein, an efficient impregnation approach to access atomically dispersed Sr single atoms supported on Nb2O5 is reported; meanwhile, various ligands (-Cl, -Br, -OH) are employed to customize the local structure. The results show that Cl-Sr/Nb2O5 exhibits excellent catalytic performance in eliminating NO, which is significantly superior to other catalysts. The introduction of Sr atom and ligand increases the energy barrier of NO2 formation, thus improving the selectivity of converting NO to NO3¯. This study highlights the importance of precisely designing the catalytic site at the atomic level, and the obtained insights may serve as a valuable guide for developing future catalyst designs.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123688"},"PeriodicalIF":22.1,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Uncovering the synergy between gold and sodium on ZrO2 for boosting the reverse water gas shift reaction: In-situ spectroscopic investigations 揭示 ZrO2 上金和钠在促进反向水气变换反应中的协同作用：原位光谱研究

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-03 DOI: 10.1016/j.apcatb.2023.123685

Abdallah I.M. Rabee , Sebastian Cisneros , Dan Zhao , Carsten R. Kreyenschulte , Stephan Bartling , Vita Kondratenko , Christoph Kubis , Evgenii V. Kondratenko , Angelika Brückner , Jabor Rabeah

{"title":"Uncovering the synergy between gold and sodium on ZrO2 for boosting the reverse water gas shift reaction: In-situ spectroscopic investigations","authors":"Abdallah I.M. Rabee , Sebastian Cisneros , Dan Zhao , Carsten R. Kreyenschulte , Stephan Bartling , Vita Kondratenko , Christoph Kubis , Evgenii V. Kondratenko , Angelika Brückner , Jabor Rabeah","doi":"10.1016/j.apcatb.2023.123685","DOIUrl":"10.1016/j.apcatb.2023.123685","url":null,"abstract":"<div>CO2 conversion to CO via the reverse water-gas shift (RWGS) reaction is a promising source of syngas for subsequent synthesis of liquid fuels and chemicals. Herein, we present the synthesis of catalysts containing Au supported on hydroxylated Na-modified ZrO2, with Au amounts ranging from 0.05 to 1 wt%. Systematic investigations reveal the formation of cooperative Au/Na sites at the interface. These sites cooperate synergistically to activate CO2 and generate a high surface density of carboxylate-like species, which serve as highly active intermediates for CO formation. It was found that the RWGS reaction on the catalyst with low Au loading proceeds mainly via a carboxylate pathway, with bidentate formate acting as spectators. At higher Au loading, the bidentate formate pathway contributes somewhat to CO formation alongside the carboxylate pathway. Based on temporal analysis of products, we emphasize the significant roles of H2 spillover and the metal-support interface in the RWGS reaction.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123685"},"PeriodicalIF":22.1,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139105399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Highly selective and low-overpotential electrocatalytic CO2 reduction to ethanol by Cu-single atoms decorated N-doped carbon dots 铜-单原子装饰的 N-掺杂碳点高选择性、低过电势电催化 CO2 还原成乙醇

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-03 DOI: 10.1016/j.apcatb.2024.123694

Rahul Purbia , Sung Yeol Choi , Chae Heon Woo , Jiho Jeon , Chulwan Lim , Dong Ki Lee , Jae Young Choi , Hyung-Suk Oh , Jeong Min Baik

{"title":"Highly selective and low-overpotential electrocatalytic CO2 reduction to ethanol by Cu-single atoms decorated N-doped carbon dots","authors":"Rahul Purbia , Sung Yeol Choi , Chae Heon Woo , Jiho Jeon , Chulwan Lim , Dong Ki Lee , Jae Young Choi , Hyung-Suk Oh , Jeong Min Baik","doi":"10.1016/j.apcatb.2024.123694","DOIUrl":"10.1016/j.apcatb.2024.123694","url":null,"abstract":"<div>Selective, low-overpotential and high Faradaic efficiency electroreduction of CO2 to ethanol is in prominent global demand and lies in structuring, loading, and modulating the coordination states of Cu single atom catalysts (SACs) with support matrix. Here, the low-temperature (160 °C) synthesis of Cu–SACs–N-doped carbons dots (Cu–SACs–N–CQDs) is reported via Cu–dopamine complex process. The optimized Cu–SACs–N–CQDs electrocatalyst brings remarkably high Faraday efficiency (> 80%) and selectivity for ethanol with 50 h operation stability, which far exceeds previous results in terms of overpotential, stability, and Faraday efficiency. Surprisingly, the Faraday efficiency and selectivity of ethanol are highly sensitive to the coordination states of copper SACs with variation of Cu loadings. Operando X-ray absorption spectroscopy indicates in situ-generated neighboring metallic Cu–Cu atom coordination as real catalytic active sites from isolated single Cu atom during CO2 reduction, which favors the ethanol selectivity.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123694"},"PeriodicalIF":22.1,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Unveiling the mechanism of enhanced water purification by F-Fe-Zn-MCM-41 in O3/PMS 揭示 F-Fe-Zn-MCM-41 在 O3/PMS 中增强水净化的机理

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-02 DOI: 10.1016/j.apcatb.2023.123608

Weirui Chen , Yingjing Tian , Dongpo Liu , Yunqiang Yi , Xukai Li , Jing Wang , Liying Bin , Ping Li , Bing Tang , Laisheng Li

{"title":"Unveiling the mechanism of enhanced water purification by F-Fe-Zn-MCM-41 in O3/PMS","authors":"Weirui Chen , Yingjing Tian , Dongpo Liu , Yunqiang Yi , Xukai Li , Jing Wang , Liying Bin , Ping Li , Bing Tang , Laisheng Li","doi":"10.1016/j.apcatb.2023.123608","DOIUrl":"10.1016/j.apcatb.2023.123608","url":null,"abstract":"<div>To break the restriction of SO52- as the essential initiator in O3/PMS reaction during water purification, F-Fe-Zn-MCM-41 (FFeZn-M) was designed to enhance ibuprofen (IBP) degradation during O3/PMS process. The great electronegativity difference between Fe and Zn created an electron flow from Zn to Fe, which was further enhanced by electron withdrawing Si-F group. FFeZn-M changed the traditional interaction between PMS and O3. PMS would be adsorbed on the surface of Zn and acted as an electron donor. Meanwhile, O3 received electrons from Fe site and was activated into ROS. With •OH and 1O2 as the main ROS, FFeZn-M/O3/PMS process achieved the complete IBP removal and a 60.9% mineralization rate, which was significantly higher over those of FFeZn-M/O3 and FFeZn-M/PMS processes. FFeZn-M/O3/PMS behaved better at weak acidic and neutral condition rather than the basic condition required by conventional O3/PMS process. This study offered a novel catalyst design strategy for O3/PMS.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123608"},"PeriodicalIF":22.1,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139077339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Tandem catalysis for CO2 conversion to higher alcohols: A review 二氧化碳转化为高级醇的串联催化：综述

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-02 DOI: 10.1016/j.apcatb.2023.123663

Yiming He , Fabian H. Müller , Regina Palkovits , Feng Zeng , Chalachew Mebrahtu

{"title":"Tandem catalysis for CO2 conversion to higher alcohols: A review","authors":"Yiming He , Fabian H. Müller , Regina Palkovits , Feng Zeng , Chalachew Mebrahtu","doi":"10.1016/j.apcatb.2023.123663","DOIUrl":"10.1016/j.apcatb.2023.123663","url":null,"abstract":"<div>In recent years, due to the substantial emission of CO2, global warming has become more severe, and there is an urgent need to develop technologies to reduce greenhouse gas CO2 emissions. Converting CO2 into higher alcohols is a promising process, as it not only produces valuable chemicals but also utilizes CO2 as feedstock. Currently, most reported catalytic approaches are based on direct hydrogenation of CO2 to synthesize higher alcohols. However, the synthesis of higher alcohols involves multiple steps, requiring catalysts with multiple functional sites and their synergistic interactions are crucial. Nevertheless, controlling catalysts at the nanoscale poses challenges, hindering the design of efficient multi-site catalysts. An alternative approach worth considering is to perform a tandem of multiple well-established catalytic reactions (e.g., methanol synthesis, CO2-Fischer-Tropsch-Synthesis, RWGS, syngas conversion, olefin hydration, etc.) to indirectly achieve the conversion of CO2 into higher alcohols, instead of direct CO2 hydrogenation. Therefore, in this review, these alternative strategies of higher alcohols synthesis are discussed, and their potential is evaluated. First, thermodynamic analysis, the selective adjustment strategies, and the current challenges faced for direct CO2 hydrogenation are introduced. Then, physical integration of multiple catalysts as a feasible strategy to endow the catalyst with multifunctional properties is discussed. Subsequently, several feasible routes of CO2 conversion into higher alcohols and the advanced catalysts employed for each pathway are summarized. Finally, merits and limitations of the different approaches are provided, emphasizing the great potential the tandem reaction strategy holds for the efficient synthesis of higher alcohols by CO2 conversion.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123663"},"PeriodicalIF":22.1,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139077427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Synergy between palladium single atoms and small nanoparticles co-anchored on carbon atom self-doped graphitic carbon nitride boosting photocatalytic H2 generation 碳原子自掺杂氮化石墨碳上共锚定的钯单原子和小纳米粒子之间的协同作用促进光催化产生 H2

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-02 DOI: 10.1016/j.apcatb.2023.123680

Miao Ren, Jiaqi Meng, Yuxin Yang, Xueyan Zhang, Guang Yang, Lang Qin, Yihang Guo

{"title":"Synergy between palladium single atoms and small nanoparticles co-anchored on carbon atom self-doped graphitic carbon nitride boosting photocatalytic H2 generation","authors":"Miao Ren, Jiaqi Meng, Yuxin Yang, Xueyan Zhang, Guang Yang, Lang Qin, Yihang Guo","doi":"10.1016/j.apcatb.2023.123680","DOIUrl":"10.1016/j.apcatb.2023.123680","url":null,"abstract":"<div>Supramolecule self-assembly of dicyandiamide and uracil followed by thermal polymerization route is designed to prepare carbon atom self-doped g-C3N4 (CCNx), and then wet reduction is applied to fabricate Pd single atoms (Pd1) and nanoparticles (PdNPs) co-anchored CCNx heterojunctions (Pd1+NPs/CCNx). In Pd1+NPs/CCNx structure, interlayer Pd−N4 coordination is the most favorable for chemically stabilizing Pd1, while PdNPs accumulate on the in-plane of CCNx. Pd1+NPs/CCNx heterojunctions exhibit remarkably enhanced photocatalytic H2 evolution reaction (HER) activity, and HER rate and AQY value reach up to 24.1 mmol g−1 h−1 and 17.1% (400 nm) over the optimized Pd1+NPs/CCNx catalyst. Mechanism studies unveil that synergy of as-built interlayer N−Pd−N electron transfer channels at the atomic-scale and surface Mott–Schottky effect of small Pd nanoparticles notably accelerates migration of photogenerated electrons, which leads to plentiful electrons accumulation around Pd single atoms and small nanoparticles to decrease the energy barrier of H* activation and boost HER photodynamics significantly.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123680"},"PeriodicalIF":22.1,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139077163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Boosting hydrogen evolution performance of nanoporous Fe-Pd alloy electrocatalyst by metastable phase engineering 通过易变相工程提升纳米多孔铁钯合金电催化剂的氢气进化性能

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-02 DOI: 10.1016/j.apcatb.2023.123677

Zhangyi Li , Chaoyang Wang , Yanqin Liang , Hui Jiang , Shuilin Wu , Zhaoyang Li , Wence Xu , Shengli Zhu , Zhenduo Cui

{"title":"Boosting hydrogen evolution performance of nanoporous Fe-Pd alloy electrocatalyst by metastable phase engineering","authors":"Zhangyi Li , Chaoyang Wang , Yanqin Liang , Hui Jiang , Shuilin Wu , Zhaoyang Li , Wence Xu , Shengli Zhu , Zhenduo Cui","doi":"10.1016/j.apcatb.2023.123677","DOIUrl":"10.1016/j.apcatb.2023.123677","url":null,"abstract":"<div>Nanoporous Fe-Pd alloy with metastable face-centered cubic (fcc Fe-Pd) phase is prepared by electrochemical dealloying as an electrocatalyst for hydrogen evolution reaction (HER). The nanoporous fcc Fe-Pd alloy achieves an overpotential of 58 mV at 10 mA cm−2 in 1 M KOH, outperforming those of stable body-centered cubic Fe-Pd alloy (bcc Fe-Pd) and commercial Pt/C catalyst. Density functional theory calculation reveals that the metastable fcc structure can tailor the coordination environment and electronic structure of Pd active sites in Fe-Pd alloy. As a result, the d‐band center of Pd active site shifts away from the Fermi level, which weakens the Pd-H interaction and reduces the energy barrier of water dissociation. In addition, the fcc Fe-Pd exhibits good mechanical properties, which maintains the catalytic performance in the deformation state. This work broadens the idea for designing and preparing HER catalysts via metastable phase structure design.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123677"},"PeriodicalIF":22.1,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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