Applied Catalysis A: General最新文献

{"title":"Ultralow loading Ru/CeO2 with strong metal-support interaction for efficient catalytic wet air oxidation of m-cresol","authors":"Tianyu Luan ,&nbsp;Huaiqian Lu ,&nbsp;Lina Han ,&nbsp;Litao Jia ,&nbsp;Yong Xiao ,&nbsp;Debao Li","doi":"10.1016/j.apcata.2025.120367","DOIUrl":"10.1016/j.apcata.2025.120367","url":null,"abstract":"<div><div>Modulating the metal-support interaction (MSI) is an efficient strategy to optimize the catalytic wet air oxidation (CWAO) performance. Herein, ultralow loading (0.3 wt%) Ru/CeO₂ catalysts were synthesized based on the morphology-dependent effect of ceria supports (nanorods vs. nanocubes) and evaluated for m-cresol degradation. We found that the MSI does not only govern the chemical states of Ru species but also regulates the structure of the interfacial sites and the density of oxygen vacancies. Ru/CeO₂-R, with stronger Ru-CeO₂ interactions, possesses more Ruⁿ⁺ species, well-defined Ru-O-Ce interfacial sites and oxygen vacancies, which enhance oxygen activation and carbon deposits elimination. Consequently, the Ru/CeO₂-R catalyst exhibits higher catalytic activity (k = 0.41 min⁻¹) and long-term stability for m-cresol degradation compared to Ru/CeO₂-C. This work provides a rational design strategy for Ru-based CWAO catalysts by modulating MSI and interfacial site engineering for the degradation of recalcitrant pollutants.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"704 ","pages":"Article 120367"},"PeriodicalIF":4.7,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting catalytic activity of Ag-modified CeO2-Al2O3 mixed metal oxide support via coupling with a VUV photoreactor: A catalytic ozonation system applied towards VOC oxidation","authors":"Amir Payan,&nbsp;Farid Jafarihaghighi,&nbsp;Jafar Soltan","doi":"10.1016/j.apcata.2025.120370","DOIUrl":"10.1016/j.apcata.2025.120370","url":null,"abstract":"<div><div>This study introduces a new air purification strategy that combines a vacuum ultraviolet (VUV) photoreactor as an in-situ source of O₃ generation coupled with a fixed-bed ozonation reactor equipped with Ag-based catalysts. The results showed that the integration of the VUV photoreactor to the fixed-bed reactor significantly enhanced not only the conversion of acetone but also improved the O₃ decomposition compared to the catalytic ozonation system alone in that the acetone and O₃ conversion were boosted from 82 % and 86 %, respectively, to 100 % each. While the inhibitory impact of relative humidity (RH) on Ag/CeO₂−Al₂O₃ activity using a fixed bed reactor was detected, coupling with the VUV photoreactor led to maintaining 100 % conversion of acetone and ozone even in the humid condition. Indeed, although RH poisoned the interface of the gas-catalyst, leading to an inhibition role in the catalytic reactions, it improved the VUV photolysis performance in the gaseous state, resulting in the enhancement of the coupled reactor’s performance compared to the only catalytic ozonation fixed bed reactor. Additionally, the in-situ regeneration capability, which was introduced to the air treatment system by combining the VUV photoreactor with the traditional catalytic ozonation, granted prolonged reusability of the catalyst with minimal activity reduction (less than 2 %). The attained data showed that the presence of binary metal oxide supports with an optimized 1:1 ratio had a key role in maintaining not only a complete conversion of acetone and ozone but also achieving above 99 % reaction selectivity towards complete oxidation. Finally, a mechanistic study was conducted where the in-situ diffuse reflectance infrared Fourier transform (DRIFT) analysis proved the role of surface carboxylate and electron paramagnetic resonance (EPR) data demonstrated the co-participation of ^{<strong>.</strong>}OH/^{<strong>.</strong>}O₂⁻ radicals in acetone removal.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"704 ","pages":"Article 120370"},"PeriodicalIF":4.7,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen-oxygen defects polytriazineimide photocatalytic efficient and selective oxidation of benzyl alcohol","authors":"Meiting Song ,&nbsp;Zhenglong Shen ,&nbsp;Ying Liu ,&nbsp;Yiguo Su ,&nbsp;Yuhang Wu","doi":"10.1016/j.apcata.2025.120368","DOIUrl":"10.1016/j.apcata.2025.120368","url":null,"abstract":"<div><div>By a one-step molten salt calcination method, the copolymer 4,6-diaminopyrimidine was successfully incorporated into the precursor melamine to prepare a polytriazineimide photocatalyst rich in nitrogen and oxygen defects for the selective oxidation of benzyl alcohol. A series of characterizations confirmed the existence of the defects, and the photoelectric performance test showed that the defects could enhance the responsiveness of the catalyst to light and facilitate the separation of photogenerated carriers. Moreover, the existence of nitrogen and oxygen defects helps to adsorb more surface oxygen molecules to generate more superoxide radicals as the main active species to selectively oxidize benzyl alcohol. Therefore, the 46DP-10 % sample exhibits excellent benzyl alcohol oxidation performance, the conversion rate is 84.9 % under visible light oxygen atmosphere, and the selectivity is greater than 99 %. This work presents a novel idea for creating nitrogen and oxygen deficient materials through molten salt-assisted calcination of precursors and copolymers.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"703 ","pages":"Article 120368"},"PeriodicalIF":4.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal-Salphen covalent organic polymers for bifunctional electrocatalytic ammonia synthesis and oxygen evolution","authors":"Jiani Zhao ,&nbsp;Yuhan Xia ,&nbsp;Wenhua Xu,&nbsp;You Lv,&nbsp;Chengbo Li,&nbsp;Jun Li,&nbsp;Ning Wang","doi":"10.1016/j.apcata.2025.120369","DOIUrl":"10.1016/j.apcata.2025.120369","url":null,"abstract":"<div><div>Herein, we report a one-pot synthesis of metal-salphen-based covalent organic polymers (MSalphen-COPs) through Schiff base condensation of 1,3,5-triformylphloroglucinol and o-phenylenediamine in the presence of M(OAc)₂·nH₂O (M = Co, Ni, Cu). FTIR spectra confirm the successful formation of COPs via imine condensation while revealing an irreversible enol-keto tautomerization process that drives the structural evolution toward a thermodynamically stabilized framework. XPS analyses reveal that metal ions coordinate with deprotonated amine nitrogen and carbonyl oxygen moieties, deviating from conventional imine nitrogen/phenolate oxygen coordination in Metal-Salphen complexes. The electrocatalytic performance of MSalphen-COPs for nitrate/nitrite reduction (NO_xRR) and oxygen evolution reaction (OER) exhibits strong metal-dependent trends, with CoSalphen-COP achieving exceptional activity. DFT calculations attribute cobalt’s superiority to its lowest barriers along catalytic cycles. Leveraging its bifunctionality, a CoSalphen-COP-based NO₃RR||OER system demonstrates efficient NH₃/O₂ coproduction, validating its potential for sustainable electrochemical applications. This work establishes a paradigm for designing task-specific COPs through tailored metal-ligand coordination environments.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"703 ","pages":"Article 120369"},"PeriodicalIF":4.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comparative study proposing performance benchmarks for convoying industrial CO2-to-formate electroconversion","authors":"Jie Xiao ,&nbsp;Dong-Dong Ma ,&nbsp;Xinquan Shen ,&nbsp;Shu-Guo Han ,&nbsp;Wenbo Wei ,&nbsp;Qi-Long Zhu","doi":"10.1016/j.apcata.2025.120362","DOIUrl":"10.1016/j.apcata.2025.120362","url":null,"abstract":"<div><div>Selecting suitable electrocatalytic benchmarks can greatly enhance electrocatalyst design and better assess their performance and potential applications. However, the absence of standardized electrocatalytic benchmarks bridging laboratory innovation to industrial implementation hinders the development of pH-universal CO₂-to-formate conversion systems that meet industrial-grade current densities (&gt; 200 mA cm^–2), Faradaic efficiencies (FE &gt; 90 %), and long-term stability. Herein, through a systematic evaluation of commercial bismuth-based chemicals (metal, oxide, salts) for CO₂ electroreduction, we demonstrated that bismuth salts (e.g., Bi(NO₃)₃) as precursors for material development, can emerge as the universal performance benchmarks across all pH conditions (acidic, neutral, and alkaline). Concretely, in various electrolytic environments for formate production, these bismuth salts-coated electrodes generally exhibit exceeding 90 % FE, large current densities, low onset potentials and potential operational stability. Moreover, a comparative analysis with In/Sn/Pb analogues profoundly elucidates the general benchmarking feasibility of bismuth salts in facilitating CO₂-to-formate electroconversion. This work establishes a screening paradigm of formate-targeted electrocatalytic materials, which can assess and guide the design of practical CO₂ electrocatalysts for sustainable formate production at industrial scales.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"703 ","pages":"Article 120362"},"PeriodicalIF":4.7,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The two-stage formation process of coke species on ferrierite zeolite during 1-butene skeletal isomerization revealed by surface-enhanced Raman scattering technique","authors":"Guoliang Wu,&nbsp;Qiang Bao,&nbsp;Jian Zhang,&nbsp;Mingjian Luo,&nbsp;Zhirui Chen,&nbsp;Xue Qiao,&nbsp;Yi Hu,&nbsp;Wenlin Wang,&nbsp;Yunfeng Hu","doi":"10.1016/j.apcata.2025.120355","DOIUrl":"10.1016/j.apcata.2025.120355","url":null,"abstract":"<div><div>In this paper, a series of ferrierite (FER) zeolites with different acidities were successfully synthesized using silica sol with different concentrations as the silica sources. With the assistance of TG-MS/TPO measurement, the formation process of coke species on FER zeolite during 1-butene skeletal isomerization was investigated using surface-enhanced Raman scattering (SERS) technique with iodide-modified Ag NPs as the substrate. The results revealed that in the early reaction stage, polyaromatics and polyolefins are formed in the first stage due to strong acid sites. Later, polyolefin and olefin components from the second stage can potentially transform into polyaromatics, causing the deactivation of FER zeolite. This potential is controlled by the quantity of weak acid sites. In other words, the stability of FER zeolite in the skeletal isomerization of 1-butene exhibits a negative correlation with the abundance of its weak acid sites. These findings indirectly demonstrate the significant advantages of SERS-based coke detection method.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"703 ","pages":"Article 120355"},"PeriodicalIF":4.7,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a supported metal oxide catalyst for direct dehydrogenation of propane to propene","authors":"Rajvikram Singh,&nbsp;Raghvendra Singh,&nbsp;Goutam Deo","doi":"10.1016/j.apcata.2025.120354","DOIUrl":"10.1016/j.apcata.2025.120354","url":null,"abstract":"<div><div>Propene is an important building block in the petrochemical industry and its demand is rapidly increasing. However, the production through conventional processes is limited, and there is a dire need to develop a suitable catalyst for the direct dehydrogenation of propane. Multiple set of catalysts are synthesized via incipient wetness impregnation method and characterized by various techniques. These catalysts are also tested for the direct dehydrogenation reaction, to examine the effect of active metal oxide species, support material, metal oxide loading and potassium (K) loading. Subsequently, the reaction temperature and contact time are optimized for the reaction. A near-monolayer loading chromium oxide supported on ZrO₂ is the most active. At this loading incipient amounts of Cr₂O₃ crystallites are detected, which became larger at higher coverages. The monolayer coverage appears to be between 5.2 and 6.6 <span><math><mrow><mi>ato</mi><msub><mrow><mi>m</mi></mrow><mrow><mi>Cr</mi></mrow></msub><mo>/</mo><mi>n</mi><msup><mrow><mi>m</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span>. Furthermore, at this coverage the amount of reducible Cr⁺⁶ species was maximum. The activity of this near-monolayer catalyst is further improved by co-impregnating K. A Cr to K molar ratio of 1:0.05 is found to increase the amount of reducible Cr⁺⁶ and the catalyst activity and selectivity. Increasing the K amount further leads to a decrease in activity. Activity is increased by increasing the reaction temperature till 550 ℃; however, above 550 ℃ the catalyst deactivates due to coke formation. Further improvement in activity is achieved by increasing the contact time and a conversion of ∼30 % and yield of ∼27 % is achieved for the K-promoted supported chromia catalyst at 550 °C and a contact time of 37.33 <span><math><mrow><msub><mrow><mi>g</mi></mrow><mrow><mi>cat</mi></mrow></msub><mo>.</mo><mi>h</mi><mo>/</mo><mi>mol</mi></mrow></math></span>.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"703 ","pages":"Article 120354"},"PeriodicalIF":4.7,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Promotional effect of CeO2 and Fe2O3 species on mesoporous silica as efficient catalysts for the vapor-phase dehydration of iso-butyl alcohol to isobutylene","authors":"Walaa A. Elhamdy ,&nbsp;Abd El-Aziz A. Said ,&nbsp;Mohamed N. Goda ,&nbsp;Kamal M.S. Khalil","doi":"10.1016/j.apcata.2025.120352","DOIUrl":"10.1016/j.apcata.2025.120352","url":null,"abstract":"<div><div>CeO₂–Fe₂O₃ binary oxides were effectively incorporated into mesoporous spherical silica (MCM-41) via a sol–gel technique. The resultant CFO/MCM-41 nanocomposites, with metal loadings ranging from 3 to 30 wt%, were subsequently calcined at 550 °C and assessed as catalysts for the gas-phase dehydration of isobutyl alcohol. Structural and surface analyses using XRD, TG-DTA, ATR-FTIR, BET, TEM, EDX, XPS, and pyridine-adsorbed FTIR confirmed the formation of thermally stable, well-dispersed active phases, as well as the presence of both Lewis and Brønsted acid sites. The differences in catalytic activity among these nanocomposites were closely linked to variations in their acidity. Among all the catalysts, the 10 wt% CeFeO₃/MCM-41 sample demonstrated the best performance at 350 °C, achieving approximately 92 % isobutanol conversion, 100 % selectivity toward isobutylene, and a butene production rate of 45.10 mmol g⁻¹ h⁻¹ . The catalyst also showed excellent stability across five reuse cycles. The outstanding catalytic performance and stability were directly correlated with the material's enhanced structural integrity and optimized textural properties. Furthermore, XPS analysis revealed that the Ce^3 +/Ce⁴⁺ and Fe²⁺/Fe³⁺ redox states, modulated by Ce–Fe interactions, played a crucial role in tuning the catalyst’s acidity and catalytic performance.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120352"},"PeriodicalIF":4.7,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenolic resin/cadmium selenide heterojunctions for efficient hydrogen peroxide production with broad-spectrum light utilization","authors":"Zhixiong Zheng ,&nbsp;Yazhou Zhou","doi":"10.1016/j.apcata.2025.120353","DOIUrl":"10.1016/j.apcata.2025.120353","url":null,"abstract":"<div><div>The efficient and sustainable production of hydrogen peroxide (H₂O₂) via solar-driven photocatalysis is hindered by poor charge separation and limited light absorption. To address these challenges, we present a novel S-scheme heterojunction photocatalyst composed of cadmium selenide (CdSe) nanoparticles and phenolic resin (RF523). The integration of RF523 with CdSe promotes efficient charge separation by generating a built-in electric field, reducing electron-hole recombination. This design enhances both the oxidation and reduction capabilities of the materials and expands spectral absorption to the near-infrared region (800 nm), which is underutilized in conventional systems. The RF/CdSe-100 composite demonstrated a remarkable H₂O₂ production rate of 888.9 μmol·h⁻¹ under full-spectrum light, outperforming mechanically mixed samples by a factor of 2.0. Additionally, the composite exhibited broad-spectrum light absorption, with an apparent quantum yield of 19.0 % under 365 nm light and 1.7 % under 800 nm light, highlighting its ability to efficiently utilize a wide range of solar energy. The photocatalytic mechanism is driven by the S-scheme charge transfer process, enhancing redox efficiency and promoting the generation of reactive oxygen species (ROS) for H₂O₂ production. This work offers an efficient strategy for solar-driven H₂O₂ synthesis, advancing the design of photocatalysts for renewable energy and environmental applications.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"703 ","pages":"Article 120353"},"PeriodicalIF":4.7,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering hybrid plasmonic nanomaterials for solar energy conversion: Insight into the structure-function relations","authors":"Fengxia Tong ,&nbsp;Leitao Zhu ,&nbsp;Xiaolei Bao ,&nbsp;Xizhuang Liang ,&nbsp;Zhaoke Zheng","doi":"10.1016/j.apcata.2025.120351","DOIUrl":"10.1016/j.apcata.2025.120351","url":null,"abstract":"<div><div>Plasmonic nanomaterials, endowed with the unique surface plasmon resonance (SPR) effect, offer a promising route to convert low-intensity solar energy into chemical energy with a higher efficiency. However, the significant mismatch in timescales between rapid SPR relaxation (∼100 picoseconds) and slow chemical reaction kinetics (milliseconds or seconds) poses a major obstacle to their widespread application. To overcome these challenges, it is crucial to design multicomponent plasmonic nanostructures and establish efficient charge carrier channels. This review focuses on the effect of unique structures of plasmonic nanomaterials with precise geometries on catalytic performance. The key design strategies for hybrid plasmonic nanostructures and the deep physical and chemical mechanism have been summarized to effectively promote charge carrier excitation and migration. These strategies involve the shape, size and electronic structures tailoring of plasmonic components, an atomistic control over their coupling with other plasmonic components, doped semiconductors or non-plasmonic components, single-atom doping, crystal phase engineering as well as external field coupling. Finally, we discuss the future challenges and prospects in this field. This review aims to offer valuable insights in the design of plasmonic photocatalytic materials, ultimately accelerating the development of high-performance plasmonic photocatalysts.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120351"},"PeriodicalIF":4.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}