Catalysis Science & Technology最新文献_第10页

Computational study of tailorable metal–support interactions in PtSn/γ-Al2O3via surface hydroxylation† PtSn/γ- al2o3表面羟基化反应中可定制金属-载体相互作用的计算研究

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00226e

Ying Ma , Mengyuan Huang , Ziyi Liu , Haowei Wang , Dongqi Wang , An-Hui Lu

{"title":"Computational study of tailorable metal–support interactions in PtSn/γ-Al2O3via surface hydroxylation†","authors":"Ying Ma , Mengyuan Huang , Ziyi Liu , Haowei Wang , Dongqi Wang , An-Hui Lu","doi":"10.1039/d5cy00226e","DOIUrl":"10.1039/d5cy00226e","url":null,"abstract":"<div><div>Metal–support interactions (MSIs) are fundamental to the design and optimization of heterogeneous catalysts. In PtSn/γ-Al<sub>2</sub>O<sub>3</sub> catalysts, the tunable surface properties of γ-Al<sub>2</sub>O<sub>3</sub> provide opportunities to tailor MSIs for optimal catalytic performance, and calls for extensive study on the influence of surface hydroxylation of γ-Al<sub>2</sub>O<sub>3</sub> on MSIs. Herein, the influence of the surface hydroxylation mode and hydroxyl coverage on MSIs was investigated, and the results show that terminal hydroxyl groups can bind with the PtSn cluster to assist the anchoring of the cluster, while bridging hydroxyl groups repel the cluster from accessing the surface. A positive correlation between the Pt 5d band center and the support-to-metal charge transfer was established, and the charge of the supported metal cluster was proposed to be used as a descriptor to evaluate its reactivity in a catalytic reaction. This study provides insight into the rational design of tailored catalysts supported on hydroxylated surfaces.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3064-3074"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Influence of titanium species type in siliceous beta zeolites on their catalytic activity in the process of selective diphenyl sulphide oxidation with hydrogen peroxide 硅质沸石中钛种类对过氧化氢选择性氧化二苯基硫化物催化活性的影响

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00009b

Wiktoria Dubiel , Anna Furgał , Andrzej Kowalczyk , Małgorzata Rutkowska , Włodzimierz Mozgawa , Irena Brunarska , Stanislaw Dzwigaj , Lucjan Chmielarz

{"title":"Influence of titanium species type in siliceous beta zeolites on their catalytic activity in the process of selective diphenyl sulphide oxidation with hydrogen peroxide","authors":"Wiktoria Dubiel , Anna Furgał , Andrzej Kowalczyk , Małgorzata Rutkowska , Włodzimierz Mozgawa , Irena Brunarska , Stanislaw Dzwigaj , Lucjan Chmielarz","doi":"10.1039/d5cy00009b","DOIUrl":"10.1039/d5cy00009b","url":null,"abstract":"<div><div>Siliceous beta zeolite containing titanium was evaluated as a catalyst for the selective oxidation of diphenyl sulphide (Ph<sub>2</sub>S) using hydrogen peroxide as the oxidising agent. Various titanium content was introduced into the SiBEA materials with vacant T-atom sites by post-synthetic methods, such as chemical vapour deposition and wet impregnation. Materials with diverse titanium loading were analysed in terms of their chemical composition using inductively coupled plasma optical emission spectrometry (ICP-OES), crystalline structure using X-ray diffraction (XRD), textural properties by low-temperature N<sub>2</sub> sorption and surface acidity by ammonia temperature-programmed desorption (NH<sub>3</sub>-TPD). The form and aggregation of catalytically active species were examined by UV-vis diffuse reflectance spectroscopy (UV-vis DRS). Titanium was incorporated into materials mainly in the form of tetrahedrally coordinated framework cations, except for the Ti<sub><em>x</em></sub>SiBEA-I samples, where anatase crystallites were identified. All the samples were characterised by high catalytic activity in the studied process. The influence of Ti(<span>iv</span>) framework species on Ph<sub>2</sub>S oxidation and selectivity towards diphenyl sulphone (Ph<sub>2</sub>SO<sub>2</sub>) were analysed and discussed.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3171-3182"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Optimization of nickel-based catalysts for hydrogenolysis of light paraffins using machine learning† 用机器学习优化轻石蜡氢解镍基催化剂

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00024f

Mohamd Sebaa , Kirill Motaev , Maxim Molokeev , Nikita Azarapin , Alina Petrishena , Alexey Matigorov , Andrey Zagoruiko , Andrey Elyshev

{"title":"Optimization of nickel-based catalysts for hydrogenolysis of light paraffins using machine learning†","authors":"Mohamd Sebaa , Kirill Motaev , Maxim Molokeev , Nikita Azarapin , Alina Petrishena , Alexey Matigorov , Andrey Zagoruiko , Andrey Elyshev","doi":"10.1039/d5cy00024f","DOIUrl":"10.1039/d5cy00024f","url":null,"abstract":"<div><div>In this study, optimization of nickel-based catalysts for the hydrogenolysis of hydrocarbons using machine learning methods. A comprehensive dataset comprising 419 experiments was compiled on the basis of literature data, focusing on key parameters such as the catalyst composition, support type, surface area, reduction temperature, and reaction conditions. We employed a random forest model to predict the reaction rates, achieving a mean absolute error of 0.37 and an <em>R</em><sup>2</sup> value of 0.76. Two Ni/Al<sub>2</sub>O<sub>3</sub> and Ni/TiO<sub>2</sub> catalysts were synthesized following the model recommendations on the optimal synthesis parameters for Ni-based catalysts. Experiments demonstrated excellent agreement between predicted and observed reaction rates and, moreover, these catalysts appeared to be more active than all other Ni-based catalysts, considered at the model learning. This means that such a model is capable not only of interpolating existing information, but also of creating improved catalysts to some extent exceeding the current level of scientific achievements, though still remaining strictly within the existing knowledge set. The proposed approach may be helpful to researchers when they start working with a reaction or a catalyst which is unfamiliar to them. Another possible research application of the proposed approach is classification of catalysts, including indication of potentially promising new approaches.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3226-3237"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

ZnxCeO2 nanorod as active catalyst for CO2 conversion into carbamates† ZnxCeO2纳米棒作为CO2转化为氨基甲酸酯的活性催化剂†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d4cy01438c

Yahaya Muhammad Abdullahi , Sani Abdullahi Zarewa , Aniz Chennampilly Ummer , Yahya Gambo , Niladri Maity , Ziyauddin S. Qureshi , Abdullah Bafaqeer , Nagendra Kulal , Bassam Elali

{"title":"ZnxCeO2 nanorod as active catalyst for CO2 conversion into carbamates†","authors":"Yahaya Muhammad Abdullahi , Sani Abdullahi Zarewa , Aniz Chennampilly Ummer , Yahya Gambo , Niladri Maity , Ziyauddin S. Qureshi , Abdullah Bafaqeer , Nagendra Kulal , Bassam Elali","doi":"10.1039/d4cy01438c","DOIUrl":"10.1039/d4cy01438c","url":null,"abstract":"<div><div>Carbon dioxide, as a non-toxic and commonly available gas, can be transformed into useful chemicals such as carbonates, carbamates, urethanes, substituted ureas, methanol, and hydrocarbons. We have found the cycloaddition of CO<sub>2</sub> and ethanolamine is a significant method for producing cyclic carbamates. The main aim of this study is to develop a stable and efficient catalyst that gives excellent selectivity for the direct synthesis of 2-oxazolidinone from CO<sub>2</sub> and ethanolamine. The CeO<sub>2</sub> nanorods (CeO<sub>2</sub> r) comprise a higher percentage of oxygen vacancies than the cubic and bulk forms of CeO<sub>2</sub>. The synthesized Zn<sub>0.1</sub>CeO<sub>2</sub> catalyst further improved the formation of oxygen vacancy sites and the surface reducibility of CeO<sub>2</sub> from Ce<sup>4+</sup> to Ce<sup>3+</sup> thereby facilitating the activation of CO<sub>2</sub> and amines. <em>In situ</em> FTIR has been used to examine the adsorption of ethanolamine and CO<sub>2</sub> on the catalyst as a function of temperature. Under the optimum reaction conditions, excellent conversion of ethanolamine (93.5%) and outstanding selectivity towards 2-oxazolidinone (98%) were achieved.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3082-3091"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effective conversion of glucose to 1,3-propanediol and ethanol via multifunctional iron foam catalysts† 用多功能铁泡沫催化剂将葡萄糖有效转化为1,3-丙二醇和乙醇

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00041f

Jiacheng Ji , Honglin Zhuang , Ling Zhou , Yi Zhang

引用次数: 0

Inhibitory effects of residual Cl− on the NO + CO reaction over a supported Pt catalyst† 残余Cl−对负载Pt催化剂上NO + CO反应的抑制作用

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d4cy01545b

Kaiqiang Wang , Wenxiao Deng , Rui Cai , Jianming Gu , Hong Yang , Yubing Liu , Yining Fan

{"title":"Inhibitory effects of residual Cl− on the NO + CO reaction over a supported Pt catalyst†","authors":"Kaiqiang Wang , Wenxiao Deng , Rui Cai , Jianming Gu , Hong Yang , Yubing Liu , Yining Fan","doi":"10.1039/d4cy01545b","DOIUrl":"10.1039/d4cy01545b","url":null,"abstract":"<div><div>H<sub>2</sub>PtCl<sub>6</sub>·6H<sub>2</sub>O is a widely used platinum precursor, but it can form residual chlorine on catalysts' surface. This study explores the effects of residual Cl<sup>−</sup> on the NO + CO reaction and demonstrates that the presence of Cl<sup>−</sup> is detrimental to the reaction performance of CeO<sub>2</sub>-supported Pt catalysts. Residual Cl<sup>−</sup> has negligible effect on the dispersion state of the catalytically active Pt component, and it exerts profound effects on tuning the NO dissociation and CO adsorption abilities of the Pt catalyst. The reduction of NO over the Cl-containing Pt catalyst (Cl–Pt/CeO<sub>2</sub>) initiating at high temperature can be attributed to fewer oxygen vacancies on its surface, which are not conducive to the dissociation of NO, in contrast with the Pt/CeO<sub>2</sub> catalyst. In addition, CO interacts strongly with anchored Pt<sup>2+</sup>, and NO occupies fewer Pt<sup>2+</sup> sites in the Cl–Pt/CeO<sub>2</sub> catalyst. Hence, fewer NO dissociation sites are present on the Cl–Pt/CeO<sub>2</sub> catalyst, deteriorating NO + CO reaction performance. This work paves a way to comprehensively understand the influence of residual Cl<sup>−</sup> on the NO + CO reaction and can provide insights for selecting suitable metal precursors to avoid harmful interference from residues.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3238-3244"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Cu(i)-based metal–organic framework-derived core–shell composites for carbon dioxide conversion to oxazolidinones† Cu(i)基金属-有机骨架衍生核壳复合材料用于二氧化碳转化为恶唑烷酮†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00166h

Xiaoci Zhang , Ce Liu , Yanxin Liu , Rongrong Fan , Feng Shi , Xinjiang Cui

{"title":"Cu(i)-based metal–organic framework-derived core–shell composites for carbon dioxide conversion to oxazolidinones†","authors":"Xiaoci Zhang , Ce Liu , Yanxin Liu , Rongrong Fan , Feng Shi , Xinjiang Cui","doi":"10.1039/d5cy00166h","DOIUrl":"10.1039/d5cy00166h","url":null,"abstract":"<div><div>Cu(<span>i</span>)-based catalysts have shown great potential for CO<sub>2</sub> conversion, though Cu(<span>i</span>) instability remains a significant hurdle. One promising approach is the encapsulation of Cu(<span>i</span>)-based nanoparticles within MOFs. This strategy not only protects the nanoparticles but also facilitates the preconcentration of substrates (<em>e.g.</em>, CO<sub>2</sub>) and intermediates through steric confinement effects, thereby enhancing the catalytic rate and selectivity. In this study, a surfactant-assisted self-assembly strategy was employed to fabricate a Cu<sub>2</sub>O@ZIF-8 composite with a high specific surface area (894.84 m<sup>3</sup> g<sup>−1</sup>). The ZIF-8 shell functions as a microchemical reactor, protecting the internal Cu<sub>2</sub>O NPs while enabling localized CO<sub>2</sub> enrichment and activation, enhancing substrate interactions, and facilitating efficient transport. This composite enabled a one-pot synthesis of oxazolidinones with yields exceeding 99%, along with excellent stability and recyclability. This work offers valuable insights into stabilizing Cu(<span>i</span>) and designing efficient MOF-based catalysts for CO<sub>2</sub> conversion.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3092-3101"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Bifunctional Rh/Al-SBA-15 catalysed cascade hydroformylation and hydroxyalkylation of alkenes to fuel precursors† 双功能Rh/Al-SBA-15催化级联氢甲酰化和羟烷基化烯烃燃料前体†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00171d

Krishnan Ravi , Hanuman Kachgunde , Venkata D. B. C. Dasireddy , Jim Mensah , Adam F. Lee , Ankush V. Biradar , Karen Wilson

{"title":"Bifunctional Rh/Al-SBA-15 catalysed cascade hydroformylation and hydroxyalkylation of alkenes to fuel precursors†","authors":"Krishnan Ravi , Hanuman Kachgunde , Venkata D. B. C. Dasireddy , Jim Mensah , Adam F. Lee , Ankush V. Biradar , Karen Wilson","doi":"10.1039/d5cy00171d","DOIUrl":"10.1039/d5cy00171d","url":null,"abstract":"<div><div>Decarbonisation of hard-to-abate liquid transport fuels, notably used in the aviation and shipping sectors, requires new catalytic routes to valorise waste feedstocks. Here we report a bifunctional Rh/Al-SBA-15 catalyst for the one-pot, two step cascade hydroformylation of 1-alkenes with CO/H<sub>2</sub> to form linear and branched aldehydes, and their subsequent hydroxyalkylation (HAA) with 2-methylfuran to form oxygenated jet fuel precursors. A strong synergy between Rh and Al-SBA-15 is observed for hydroformylation, with the bifunctional catalyst significantly more active than Rh/SBA-15 for the first step of the cascade. Superior yields of desired HAA products are observed over Rh/Al-SBA-15 relative to a physical mixture of Rh/SBA-15 and Al-SBA-15. Under syngas (CO/H<sub>2</sub>) at 30 bar and 80 °C, alkenes undergo Rh catalysed hydroformylation to aldehydes, and in a subsequent step under N<sub>2</sub>, HAA of aldehydes over the solid acid sites of Al-SBA-15 gives an overall ∼60% yield of fuel range precursors.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3149-3156"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Efficient CeO2 and CeO2–Al2O3 supports for Ru as 3rd generation ammonia synthesis catalysts: enhanced kinetic mechanism over commercial Ru/CeO2† 高效的CeO2和CeO2 - al2o3载体Ru作为第三代氨合成催化剂：比商业Ru/CeO2†增强的动力学机制

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00122f

Javier Arroyo-Caire , Edgar S. Duran-Uribe , Mayra Anabel Lara-Angulo , Manuel Antonio Diaz-Perez , Antonio Sepúlveda-Escribano , Juan Carlos Serrano-Ruiz

{"title":"Efficient CeO2 and CeO2–Al2O3 supports for Ru as 3rd generation ammonia synthesis catalysts: enhanced kinetic mechanism over commercial Ru/CeO2†","authors":"Javier Arroyo-Caire , Edgar S. Duran-Uribe , Mayra Anabel Lara-Angulo , Manuel Antonio Diaz-Perez , Antonio Sepúlveda-Escribano , Juan Carlos Serrano-Ruiz","doi":"10.1039/d5cy00122f","DOIUrl":"10.1039/d5cy00122f","url":null,"abstract":"<div><div>Ceria (CeO<sub>2</sub>) has been previously reported as a functional support for ruthenium (Ru) as an ammonia synthesis catalyst. However, lab-synthesized ceria materials usually present low surface areas, thereby limiting the generation of oxygen vacancies and the ammonia synthesis activity as a result of weak metal–support interactions. With the aim of overcoming this issue, we prepared, by a simple impregnation method, high surface area ceria and ceria–alumina supported Ru catalysts with improved ammonia synthesis performance at moderate temperatures. In this sense, lab-synthesized Ru/CeO<sub>2</sub> (with higher specific surface area and lower crystallinity than commercial ceria) showed stronger metal–support interactions than the commercial sample, which resulted in a superior global ammonia synthesis kinetic mechanism with more positive hydrogen reaction orders (<em>i.e.</em>, more resistant to hydrogen inhibition) and significantly lower activation energies (46 <em>vs.</em> 61 kJ mol<sup>−1</sup>). We found that the use of alumina as a structural support increased the surface area of ceria, thereby promoting the Ru–CeO<sub>2</sub> interaction and the catalytic performance. We analyzed the effect of the surface chemistry of two different commercial aluminas (acidic and basic) with similar surface areas. Basic alumina was found to increase the specific surface area of the catalyst to a larger extent as compared to acidic alumina. Thus, the Ru/CeO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> catalyst with 50 wt% of basic alumina showed an ammonia synthesis activity of 1.9 mmol g<sup>−1</sup> h <sup>−1</sup> at 400 °C and ambient pressure and an activation energy as low as 44.8 kJ mol<sup>−1</sup>.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 2988-2998"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 active heterogeneous Fe-based catalysts synergistically enhanced by polyaniline and MoS2 for organic contaminant elimination† 聚苯胺和二硫化钼协同增强的高活性非均相铁基催化剂用于有机污染物去除†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-04-15 DOI: 10.1039/d5cy00066a

ChengBo Qian , Yuyuan Yao , Hongliang Zhu

{"title":"Highly active heterogeneous Fe-based catalysts synergistically enhanced by polyaniline and MoS2 for organic contaminant elimination†","authors":"ChengBo Qian , Yuyuan Yao , Hongliang Zhu","doi":"10.1039/d5cy00066a","DOIUrl":"10.1039/d5cy00066a","url":null,"abstract":"<div><div>Fe-based catalysts have garnered significant attention due to their high stability, low toxicity and cost-effectiveness, while the construction of highly active heterogeneous Fe-based catalysts through a simple method is still challenging in the environmental catalysis field. Herein, employing the synergistic enhancement effect of the conductive polymer polyaniline (PANI) and co-catalyst MoS<sub>2</sub>, a highly active PANI-supported Fe-doped MoS<sub>2</sub> catalyst (PANI-Fe@MoS<sub>2</sub>) was prepared <em>via</em> a facile one-step hydrothermal process. Surprisingly, PANI incorporation induced critical structural modifications, including reduced average particle size (1 μm), expanded interlayer spacing (1.09 nm), and enhanced sulfur vacancy density. Interestingly, PANI-Fe@MoS<sub>2</sub> achieved nearly 100% elimination of carbamazepine (CBZ) within 10 min, and its removal efficiency (<em>k</em>-value) surpassed most of those reported in the literature. Notably, PANI-Fe@MoS<sub>2</sub> exhibited a high removal of TOC (nearly 50%), a wide pH operating range (2–10), and outstanding removal efficiency for various contaminants. Additionally, the quenching and electron paramagnetic resonance (EPR) experiments revealed that singlet oxygen (<sup>1</sup>O<sub>2</sub>) and hydroxyl radicals (˙OH) were the main reactive oxygen species (ROSs) for degrading CBZ. Moreover, the potential degradation pathways were proposed based on the intermediates of CBZ. This work provides a strategic paradigm for designing efficient heterogeneous Fe-based catalysts for environmental remediation.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 10","pages":"Pages 3204-3215"},"PeriodicalIF":4.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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