Applied Catalysis A: General最新文献_第4页

Revealing the characteristics of supported Ni-Mn based mixed metal oxide catalysts: Operando insights into their activation and CO2 methanation behavior 揭示负载Ni-Mn基混合金属氧化物催化剂的特性：Operando对其活化和CO2甲烷化行为的见解

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-20 DOI: 10.1016/j.apcata.2025.120582

Dennis Weber , Timo Engl , Malte Raabe , Andreas Hutzler , Michael Rubin , Roland Dittmeyer , Tanja Franken

{"title":"Revealing the characteristics of supported Ni-Mn based mixed metal oxide catalysts: Operando insights into their activation and CO2 methanation behavior","authors":"Dennis Weber , Timo Engl , Malte Raabe , Andreas Hutzler , Michael Rubin , Roland Dittmeyer , Tanja Franken","doi":"10.1016/j.apcata.2025.120582","DOIUrl":"10.1016/j.apcata.2025.120582","url":null,"abstract":"<div><div>Power-to-gas technologies, such as CO2 methanation, enable to mitigate man-made climate change. For this process to be viable, it is essential to use an active, selective and stable catalyst. This study addresses these requirements by creating a novel Ni-MnyOx/Al2O3 (0 ≤ y ≤ 1) catalyst that uses Mn not as a dopant but creates a joined Ni-Mn mixed metal oxide (MMO) phase on a Al2O3 support. To identify the ideal composition, we compare different Mn contents y from 0 to 1 and determine an Mn/Ni ratio of 0.375 as the minimum for the formation of the supported Ni-Mn MMO phase. Compared to the self-synthesized, literature-based state-of-the-art type NiOx/Al2O3 based CO2 methanation catalysts the Ni-Mn MMO based catalysts achieve about 30 % higher Ni specific methane formation rates. We carefully characterize the catalysts phase composition, surface area, active metal surface area, reducibility, surface basicity and elemental analysis. Additionally, we present a detailed in situ X-ray absorption spectroscopy (XAS) study and phase characterization on the reduction process for catalytic activation of the calcined catalysts to draw conclusions on the final activated state. It was shown that the Ni-Mn mixed metal oxide phase changes upon activation into metallic Ni supported on a Ni-depleted Ni-Mn MMO phase. Additionally, the behavior of both catalysts under reaction conditions was investigated using operando XAS, phase analysis and Diffuse Reflectance Infrared Fourier Transform Spectroscopy. Based on this, a tentative reaction mechanism was proposed which includes the possibility of additional CO2 activation pathways on the Ni-Mn MMO phase.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120582"},"PeriodicalIF":4.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118742","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}

引用次数: 0

Effect of Mn addition to Cu/ZnO/ZrO2 catalysts for CO2-to-methanol hydrogenation Mn对Cu/ZnO/ZrO2催化剂co2加氢制甲醇的影响

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-20 DOI: 10.1016/j.apcata.2025.120589

Shohei Tada , Yamato Mori , Tsubasa Shigeta , Masahiko Nishijima , Hirotsugu Hiramatsu , Ryuji Kikuchi

{"title":"Effect of Mn addition to Cu/ZnO/ZrO2 catalysts for CO2-to-methanol hydrogenation","authors":"Shohei Tada , Yamato Mori , Tsubasa Shigeta , Masahiko Nishijima , Hirotsugu Hiramatsu , Ryuji Kikuchi","doi":"10.1016/j.apcata.2025.120589","DOIUrl":"10.1016/j.apcata.2025.120589","url":null,"abstract":"<div><div>Cu/ZnO/ZrO2 catalysts are well known for promoting methanol synthesis via CO2 hydrogenation. In this study, the effect of Mn addition to Cu/ZnO/ZrO2 was investigated. XPS analysis revealed that the as-prepared catalysts contained both Mn3+ and Mn4+ species, whereas only Mn3+ was present after hydrogen reduction at 300 °C. These results suggest that Mn species existed as Mn2O3 under reaction conditions. Furthermore, the addition of Mn led to a decrease in the crystallite size of metallic Cu, indicating that Mn species promoted the dispersion of Cu species. This increased dispersion is considered to enhance the number of active sites on the Cu/ZnO/ZrO2 catalyst. In addition, the presence of Mn species enhanced the methanol selectivity by suppressing the undesirable methanol decomposition to CO. As a result, the Mn-modified Cu/ZnO/ZrO2 catalyst achieved a methanol yield of 9.3 % at 4 MPa and 250 °C.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120589"},"PeriodicalIF":4.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118739","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}

引用次数: 0

Engineering the surface structure of nanostructured Ni catalyst by doping titanium towards highly efficient CO2 reforming of methane 用掺钛技术改造纳米镍催化剂的表面结构，实现甲烷高效CO2重整

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-20 DOI: 10.1016/j.apcata.2025.120591

Rui Wang , Li Li , Zhuanzhuan Guo , Yajing Xie , Anjiao Deng , Lizhi Huang , Yali Liu , Luhui Wang , Yan Gao , Long Peng , Qingmin Yang , Changpeng Lv , Ye Wang , Patrick Da Costa , Jingxiao Yu , Chao Sun

{"title":"Engineering the surface structure of nanostructured Ni catalyst by doping titanium towards highly efficient CO2 reforming of methane","authors":"Rui Wang , Li Li , Zhuanzhuan Guo , Yajing Xie , Anjiao Deng , Lizhi Huang , Yali Liu , Luhui Wang , Yan Gao , Long Peng , Qingmin Yang , Changpeng Lv , Ye Wang , Patrick Da Costa , Jingxiao Yu , Chao Sun","doi":"10.1016/j.apcata.2025.120591","DOIUrl":"10.1016/j.apcata.2025.120591","url":null,"abstract":"<div><div>A series of nanostructured Ni/SBA-16 catalysts doped with different Ti loadings (0–10 wt%) were prepared and their catalytic behaviors were investigated in the CO2 reforming of methane reaction. Comprehensive physicochemical analyses revealed that a 2 wt% Ti -doping markedly lowered Ni particle size, enlarged specific surface area and mesopore volume, facilitated NiO reduction, intensified metal–support interaction, and enriched surface-active oxygen species, leading to optimal catalytic activity and coke resistance. However, higher Ti loadings (5–10 %) caused degradation of these structural properties compared to the optimal 2 wt% Ti loading, primarily due to the formation of NiTiO3 oxides. Consequently, catalytic performance was significantly reduced. Based on these findings, a synergistic relationship between the active metal (Ni) and tailored surface characteristics was established, which was correlated with the enhanced catalytic activity in the CO2 reforming of methane reaction.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120591"},"PeriodicalIF":4.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109591","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}

引用次数: 0

On the performances of highly promoted Fe-Zn-Cu-K catalysts for CO2 Fischer-Tropsch synthesis 高促进型Fe-Zn-Cu-K催化剂CO2费托合成性能研究

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-20 DOI: 10.1016/j.apcata.2025.120590

Beda Rolandi, Mattia Piacentini, Riccardo Ometto, Alessandro Porta, Carlo Giorgio Visconti

{"title":"On the performances of highly promoted Fe-Zn-Cu-K catalysts for CO2 Fischer-Tropsch synthesis","authors":"Beda Rolandi, Mattia Piacentini, Riccardo Ometto, Alessandro Porta, Carlo Giorgio Visconti","doi":"10.1016/j.apcata.2025.120590","DOIUrl":"10.1016/j.apcata.2025.120590","url":null,"abstract":"<div><div>A state-of-the-art Fischer-Tropsch 100Fe:10Zn:1Cu:4 K catalyst and catalysts promoted with higher Cu and K loadings were compared in terms of activity, selectivity and stability in the CO2 Fischer-Tropsch synthesis. Higher promoter loadings increased selectivity towards heavier hydrocarbons, with a minor impact on activity at high conversion conditions. In such conditions, both catalysts samples experienced activity loss possibly due to iron carbide oxidation at high water partial pressure, but while the state-of-the-art catalyst had also selectivity affected, the highly promoted catalyst preserved heavy products selectivity. Notably, the highly promoted catalyst could be successfully rejuvenated in-situ by decreasing pressure and increasing temperature under CO2/H2 flow. This procedure allowed to restore almost completely the initial activity while preserving an excellent C2+ hydrocarbon selectivity. On the contrary, the traditional Fischer-Tropsch catalyst, after the same rejuvenation treatment, showed a more pronounced selectivity shift towards lighter products. These findings can help in formulating stable catalysts that promote the one-pot synthesis of long chain hydrocarbons from CO2 at industrially relevant conditions.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120590"},"PeriodicalIF":4.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156019","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}

引用次数: 0

In-situ and operando FT-IR investigation of Pd speciation in Pd/SSZ-13: The pivotal role of CO and NO adsorption with and without H₂O Pd/SSZ-13中Pd形态的原位和操作FT-IR研究：CO和NO在有和无h2o吸附中的关键作用

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-20 DOI: 10.1016/j.apcata.2025.120592

Sara Morandi , Lidia Castoldi , Roberto Matarrese

{"title":"In-situ and operando FT-IR investigation of Pd speciation in Pd/SSZ-13: The pivotal role of CO and NO adsorption with and without H₂O","authors":"Sara Morandi , Lidia Castoldi , Roberto Matarrese","doi":"10.1016/j.apcata.2025.120592","DOIUrl":"10.1016/j.apcata.2025.120592","url":null,"abstract":"<div><div>In-situ and operando FT-IR spectroscopy was employed to give fundamental insights on CO and NO adsorption and effects on Pd/SSZ-13 investigated for potential passive NOx adsorber applications. Emphasis is placed on understanding the effects of key exhaust components, particularly H2O and O2, under conditions relevant to low-temperature NOx emission control. In-situ CO adsorption experiments at room temperature revealed the coexistence of Pd species with varying local environments and oxidation states. Notably, nearly all Pd²⁺ ions are reduced to Pd⁺/Pd⁰ through the combined action of CO and adsorbed water. Operando studies at 50 °C confirmed that Pd²⁺ reduction occurs even in the presence of trace amounts of water, while oxygen has minimal influence on Pd speciation in terms of oxidation state or coordination geometry. In-situ NO adsorption at room temperature further demonstrated that the nitrosyl bands near 1860 and 1810 cm⁻¹, well documented in literature, are both constituted by contributions from both Pd²⁺ and Pd⁺ species. Additionally, NO and water together significantly promote Pd²⁺ reduction, as evidenced by post-NO CO adsorption at room temperature with the formation of mixed Pdn⁺(CO)(NO) complexes, mainly related to Pd+. Under operando conditions performed at 120 and 150 °C, hydrated Pd⁺(NO)(H₂O)x species form readily, but full Pd²⁺ reduction is unlikely due to potential re-oxidation by oxygen. Importantly, Pd⁺(CO)(NO) species is not significantly formed under realistic PNA conditions (80–150 °C, presence of H2O and O2). These findings offer critical new insights into Pd redox behavior and speciation in Pd/SSZ-13, with emphasis on IR band assignments.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120592"},"PeriodicalIF":4.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156007","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}

引用次数: 0

Kinetic modelling and measurement of catalyst deactivation for the catalytic co-pyrolysis of PP and PET with HZSM-5 HZSM-5催化共热解PP和PET催化剂失活的动力学建模和测定

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-20 DOI: 10.1016/j.apcata.2025.120574

Sean Timothy Okonsky , J.V. Jayarama Krishna , Do Hyun Lee , Hilal Ezgi Toraman

{"title":"Kinetic modelling and measurement of catalyst deactivation for the catalytic co-pyrolysis of PP and PET with HZSM-5","authors":"Sean Timothy Okonsky , J.V. Jayarama Krishna , Do Hyun Lee , Hilal Ezgi Toraman","doi":"10.1016/j.apcata.2025.120574","DOIUrl":"10.1016/j.apcata.2025.120574","url":null,"abstract":"<div><div>The catalytic pyrolysis and co-pyrolysis of PP and PET with HZSM-5 zeolite catalyst was conducted for various catalyst to feedstock (CF) ratios, PP to PET ratios, and heating rates using a thermogravimetric analyzer (TGA). The Flynn-Wall-Ozawa (FWO) isoconversional approach was used to determine apparent activation energies for the non-catalytic and catalytic pyrolysis of PP and PET. An nth-order reaction scheme was used to model the pyrolysis at various operating conditions through the optimization of the associated kinetic parameters. Additional TGA experiments were conducted with used catalysts to gain insight into catalyst deactivation, and it was found that the inclusion of PET led to more severe deactivation. Collidine temperature programmed desorption (TPD) indicated the loss of external acid sites for catalysts coked by PET pyrolysis, explaining the severe deactivation. Catalyst deactivation was incorporated into the kinetic modelling approach, so that degradation profiles could be predicted for experiments with the used catalysts.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120574"},"PeriodicalIF":4.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217382","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}

引用次数: 0

High-yield 5-hydroxymethylfurfural synthesis via fructose dehydration catalyzed by a core-shell structured magnetic solid acid 核-壳结构磁性固体酸催化果糖脱水合成高收率5-羟甲基糠醛

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-19 DOI: 10.1016/j.apcata.2025.120587

Rui Zhu , Shike She , Yuxuan Zhou , Youting Wang , Fang Gao , Liang Zhang

{"title":"High-yield 5-hydroxymethylfurfural synthesis via fructose dehydration catalyzed by a core-shell structured magnetic solid acid","authors":"Rui Zhu , Shike She , Yuxuan Zhou , Youting Wang , Fang Gao , Liang Zhang","doi":"10.1016/j.apcata.2025.120587","DOIUrl":"10.1016/j.apcata.2025.120587","url":null,"abstract":"<div><div>The efficient synthesis of 5-hydroxymethylfurfural (HMF) constitutes a critical pathway for establishing sustainable biorefinery systems. To address the challenges of catalyst recovery difficulties and active site deactivation in conventional solid acid catalysts, a magnetic core-shell structured solid acid catalyst (Co@NC-SO3H) for fructose dehydration to HMF was developed in this manuscript. The catalyst integrated sulfonic acid groups (-SO3H) anchored on nitrogen-doped carbon nanotubes with in-situ immobilized cobalt nanoparticles, synergistically combining Brønsted acid sites with magnetic responsiveness. Comprehensive characterization through FT-IR (Fourier Transform Infrared Spectroscopy), XRD (X-Ray Diffraction), SEM (Scanning Electron Microscopy), and XPS (X-ray Photoelectron Spectroscopy) elucidated its microstructural evolution and elemental distribution. Systematic optimization of reaction parameters (temperature, solvent, reaction time, water content, and so on) achieved > 90 % yield of HMF, with 99 % conversion of fructose. The magnetic core-shell configuration enabled rapid catalyst separation via an external magnetic field, retaining > 90 % initial activity after 5 cycles with almost no metal leaching, demonstrating exceptional stability under hydrothermal conditions. This work advanced the development of catalysts for the dehydration of fructose to synthesize HMF, offering critical insights for advancing green and sustainable HMF production.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120587"},"PeriodicalIF":4.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096752","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}

引用次数: 0

Design of supported metal/metal oxide catalysts for low-temperature ethanol production by CO2 hydrogenation CO2加氢低温乙醇负载型金属/金属氧化物催化剂的设计

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-19 DOI: 10.1016/j.apcata.2025.120586

Zenghao Wei , Yusei Kamiya , Bohuan Ding , Takuma Sato , Tomohiro Hayashi , Hiroki Miura , Tetsuya Shishido

{"title":"Design of supported metal/metal oxide catalysts for low-temperature ethanol production by CO2 hydrogenation","authors":"Zenghao Wei , Yusei Kamiya , Bohuan Ding , Takuma Sato , Tomohiro Hayashi , Hiroki Miura , Tetsuya Shishido","doi":"10.1016/j.apcata.2025.120586","DOIUrl":"10.1016/j.apcata.2025.120586","url":null,"abstract":"<div><div>The selective hydrogenation of CO2 to multi-carbon oxygenates remains a key challenge in heterogeneous catalysis. In this work, a series of M1–M2Ox/TiO2 catalysts (M1 = Ru, Rh, Ir, Pd, Pt; M2 = V, Cr, Mo, W) were systematically screened for low-temperature CO2 hydrogenation to ethanol, and the C2 (ethanol) selectivity was identified as a critical descriptor that serves as a proxy for the intrinsic C–C coupling capacity and preserves the performance ranking at matched CO2 conversion. Among them, the MoOx/Rh/TiO2 catalyst (Rh loading = 1.0 wt%, Mo/Rh molar ratio = 1.0), prepared by the sequential impregnation method, exhibited superior C–C coupling performance, achieving 4.5 % ethanol selectivity and 10.6 % total C2 selectivity at 180 °C and 4 MPa. Mechanistic studies based on contact time variation revealed that CO serves as a key intermediate, with longer residence times favoring C–C bond formation. Structural characterizations (TPD, DRIFTS, TEM, XRD) indicated that MoOx enhances surface basicity and modifies the electronic state of Rh, leading to the coexistence of Rh0 and Rh+ species. This bifunctional surface facilitates both CO2 activation and ethanol formation. These findings highlight the critical role of Rh–MoOx interfacial synergy in enabling selective ethanol production from CO2 under mild conditions, providing insights for the design of efficient catalysts for C2 oxygenate production.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120586"},"PeriodicalIF":4.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156021","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}

引用次数: 0

Enhanced tetracycline antibiotic degradation by S-scheme Bi2MoO6/Bi/WO3 photocatalyst coupled with peroxymonosulfate activation s -方案Bi2MoO6/Bi/WO3光催化剂偶联过氧单硫酸盐活化增强四环素抗生素降解

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-19 DOI: 10.1016/j.apcata.2025.120585

Meiting Song, Jianping He, Zhenglong Shen, Ying Liu, Yuhang Wu

{"title":"Enhanced tetracycline antibiotic degradation by S-scheme Bi2MoO6/Bi/WO3 photocatalyst coupled with peroxymonosulfate activation","authors":"Meiting Song, Jianping He, Zhenglong Shen, Ying Liu, Yuhang Wu","doi":"10.1016/j.apcata.2025.120585","DOIUrl":"10.1016/j.apcata.2025.120585","url":null,"abstract":"<div><div>The residue of antibiotics damages ecosystems, destroys biological communities, causes immune damage and increased drug resistance in animals. The S-scheme Bi2MoO6/Bi/WO3 was synthesized using a simple hydrothermal method to degrade Chlortetracycline hydrochloride (CTC), tetracycline hydrochloride (TCH) and oxytetracycline (OTC) under the combined conditions of visible light and PMS. Bi2MoO6/Bi/WO3 heterojunction achieves a CTC, TCH and OTC removal efficiency of 94.08 %, 87.25 % and 90.36 % within 30 min under visible light and PMS. And Bi2MoO6/Bi/WO3 has excellent resistance to cations and anions, stability and generalisability. Electrochemical measurements confirm effectively improved charge carrier separation in the composite system. The S-scheme charge transfer mechanism of Bi2MoO6/Bi/WO3 composites is explained based on the results of energy band analysis and theoretical calculations. The S-scheme heterojunction Bi₂MoO₆/Bi/WO₃ synergistically enhances charge separation efficiency while enabling accelerated electron transport across the interfacial junctions. Additionally, the synergistic effect arising from the cyclic conversion between Bi3 + and Bi0 significantly enhances PMS activation, leading to increased generation of reactive species (·SO4- and 1O2) and consequently improving the overall catalytic performance of the system. Moreover, Bi2MoO6/Bi/WO3 has excellent reducibility, with Cr (VI) reduction and photocatalytic hydrogen production from water. This study provides a new approach for designing multifunctional heterogeneous catalysts that effectively degrade antibiotics, Cr (VI) reduction and photocatalytic hydrogen production in water under visible light.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120585"},"PeriodicalIF":4.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118741","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}

引用次数: 0

Effect of light sources and radiation variables on decatungstate-catalyzed ethylbenzene oxidation by molecular oxygen 光源和辐射变量对十钨酸盐催化乙苯氧化的影响

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2025-09-19 DOI: 10.1016/j.apcata.2025.120560

Ziqi Zhou, Dan Zhao, Jing Liao, Yachun Liu, Chao Zhang, Zaihui Fu

{"title":"Effect of light sources and radiation variables on decatungstate-catalyzed ethylbenzene oxidation by molecular oxygen","authors":"Ziqi Zhou, Dan Zhao, Jing Liao, Yachun Liu, Chao Zhang, Zaihui Fu","doi":"10.1016/j.apcata.2025.120560","DOIUrl":"10.1016/j.apcata.2025.120560","url":null,"abstract":"<div><div>Photo-catalytic oxidation, as a potential green synthesis protocol, has been applied to produce oxygenates from hydrocarbons, however, its large-scale application is still limited to due to insufficient research on the efficiency of light energy utilization affected by light sources and radiation variables. In this work, with the selective oxidation of ethylbenzene (EB) to acetophenone (ACP) by oxygens (O2) in MeCN-H2O-PhSO3H as the model reaction, the effects of various LED strips and their radiation variables on the photo-catalytic efficiency (turnover number, TON) of two decatungstate salts (TMADT and TBADT) and the corresponding quantum efficiency (QE) were investigated systematically by an external lighting way, which was compared to the internal and external lighting ways of tungsten-bromine lamps. The results showed that a 5050-type LED strip had the best spectral matching with TBADT, while another 3528-type LED strip had a stronger light intensity, providing the highest 5.96 % QE and 73.3 TON for the photo-oxidation, respectively. In addition, short-distance and large-area illumination, thin and homogeneous photo-reaction solution, and flowing supply O2 were also adopted to improve the TON or QE value to some extent. Under the catalysis of TBADT, the preferred 3528 LED-1 strip could effectively trigger the oxidation of EB by O2, providing ca. 93.2 % EB conversion and 86.6 % ACP selectivity under 12 h of irradiation. This work provides a beneficial exploration for improving photo-catalytic efficiency.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"708 ","pages":"Article 120560"},"PeriodicalIF":4.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217383","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}

引用次数: 0