Journal of the Taiwan Institute of Chemical Engineers最新文献

{"title":"Fault detection and diagnosis for multi-rate descriptor systems using a combination of extended Kalman filter and support vector machines","authors":"Dhrumil Gandhi,&nbsp;Meka Srinivasarao","doi":"10.1016/j.jtice.2025.106227","DOIUrl":"10.1016/j.jtice.2025.106227","url":null,"abstract":"<div><h3>Background</h3><div>In modern engineering systems, accurate fault detection and diagnosis are crucial for reliability and efficiency. Multi-rate descriptor systems pose challenges due to measurements at various intervals and the consistent initialization required by equality constraints.</div></div><div><h3>Methods</h3><div>This paper addresses these challenges by proposing novel approach combining multi-rate Differential Algebraic Equation (DAE) based Extended Kalman Filter (EKF) and Support Vector Machines (SVM). The multi-rate DAE-EKF handles nonlinear dynamics and accounts for measurement noise, while SVM enhances fault detection by classifying system residues. The integration involves two stages: multi-rate DAE-EKF operates as the primary estimator, generating state information residues, and SVM uses these residues to distinguish between normal and faulty behaviour. This method enables isolating individual and simultaneous faults in multi-rate descriptor systems, improving accuracy and reliability.</div></div><div><h3>Key Findings</h3><div>The proposed approach exploits EKF's dynamic estimation strengths and SVM's classification robustness. Benchmark studies demonstrate its effectiveness on a Two-phase reactor condenser system with a recycle and a Reactive Distillation system. By combining multi-rate DAE-EKF and SVM, this methodology overcomes multi-rate challenges and achieves enhanced fault detection and diagnosis, contributing to operational reliability in complex systems. The results show improved performance in identifying faults and ensuring system stability, showcasing its potential in industrial applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106227"},"PeriodicalIF":5.5,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successive evaluation of the green synthesized rare earth metal oxide CeO2 nanoparticles for the photo-induced degradation of methylene blue and CO2 photoreduction: Optimization of the reaction parameters by RSM-CCD model","authors":"Umar Farooq ,&nbsp;Syeda Takmeel Zahra ,&nbsp;Mehnaz Ibrahim ,&nbsp;Khalida Naseem ,&nbsp;Mohammad Ehtisham Khan ,&nbsp;Wahid Ali ,&nbsp;Mohammad S. Alomar ,&nbsp;Syed Kashif Ali ,&nbsp;Waleed Zakri","doi":"10.1016/j.jtice.2025.106220","DOIUrl":"10.1016/j.jtice.2025.106220","url":null,"abstract":"<div><h3>Background</h3><div>Environmental pollution, stemming from synthetic dyes like methylene blue and excessive CO₂ emissions, presents an imperative global challenge. Advanced nanomaterials, particularly CeO₂ nanoparticles, have emerged as promising candidates for addressing these issues due to their exceptional photocatalytic properties, chemical stability, and environmentally friendly nature.</div></div><div><h3>Methodology</h3><div>We report on the green synthesis of CeO₂ nanoparticles and evaluate their potential to degrade methylene blue and photoreduction of CO₂. The surface composition, morphology, size, crystal structure, and surface functional groups of the prepared nanoparticles were determined by Fourier transform infrared spectroscopy, x-ray diffraction, scanning electron microscopy, transmission electron microscopy, x-ray photoelectron spectroscopy, and zeta potential.</div></div><div><h3>Significant findings</h3><div>The synthesized nanoparticles exhibited an exceptional value of methylene blue degradation, as they displayed a 96.19 % degradation value in an hour. The optimized reaction value obtained from the application of response surface methodology was <strong>CeO₂ dosage = 110</strong> <strong>mg, MB dosage = 77.9</strong> <strong>mg/L, temperature = 50 °C</strong>, and <strong>agitation speed = 150.003 rpm</strong>. Moreover, prepared nanoparticles reduced 109.27 µmol.<em>g</em>⁻¹ h⁻¹ of CO₂ to its byproducts, particularly into CO. These outstanding results hint at the advantageous synthesis of the nanoparticles mentioned above from the green route and present a solution for emerging environmental concerns.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106220"},"PeriodicalIF":5.5,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ti3C2Tx MXene based membranes: A novel approach for wastewater treatment","authors":"Ashish Jyoti Borah ,&nbsp;Amit Kumar Patel ,&nbsp;Ahsan Ali ,&nbsp;AshokKumar Meiyazhagan ,&nbsp;Pulickel M. Ajayan ,&nbsp;Anchal Srivastava","doi":"10.1016/j.jtice.2025.106213","DOIUrl":"10.1016/j.jtice.2025.106213","url":null,"abstract":"<div><h3>Background</h3><div>Fresh water around the world are facing rising levels of contamination from organic pollutants, largely driven by the release of various dyes from textile industries and the waste generated by the increasing use of pharmaceuticals. These pollutants pose a serious threat to the underground water and aquatic ecosystems.</div></div><div><h3>Methods</h3><div>Membrane-based technologies are emerging as promising solutions for efficient pollutant separation and purification to address the global issue of water pollution. In this study, we investigate the use of Ti₃C₂T_x membranes synthesized using HF etching technique and fabricated using a simple vacuum-assisted filtration technique. Three membranes having thicknesses ∼65 µm, 97 µm, and 155 µm were developed for the water filtration experiment.</div></div><div><h3>Significant Findings</h3><div>These membranes demonstrated high rejection rates (&gt;95 %) and fluxes (&gt;1000 Lm^-2h^-1) for 10 ppm solutions of Rhodamine B, Methyl Violet, and Levofloxacin maintaining its performance even at higher concentrations (upto 50 ppm). The membranes showed excellent stability over 10 cycles, along with strong anti-fouling properties. Additionally, they retained their performance under varying pH concentrations for each pollutant. This study highlights the potential of Ti₃C₂T_x-based membranes for diverse wastewater treatment applications, including industrial wastewater treatment, pharmaceutical industries, and life sciences sectors.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106213"},"PeriodicalIF":5.5,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile synthesis of heterojunction BaTiO3/g-C3N4 electrocatalyst for hydrogen evolution reaction under acidic condition","authors":"Leena Baskar ,&nbsp;Divyadharshini Satheesh ,&nbsp;Yuvashree Jayavelu ,&nbsp;Karthik Krishnan ,&nbsp;Rathika Rajendran ,&nbsp;Rekha Pachaiappan ,&nbsp;Vijayarangamuthu Kalimuthu ,&nbsp;M Karunakaran ,&nbsp;Rudra Banerjee ,&nbsp;Paul Joseph Daniel ,&nbsp;Kovendhan Manavalan","doi":"10.1016/j.jtice.2025.106214","DOIUrl":"10.1016/j.jtice.2025.106214","url":null,"abstract":"<div><h3>Background</h3><div>Hydrogen evolution reaction (HER) is an electrochemical process for achieving sustainable energy by environment friendly process. To enhance the HER activity, perovskite BaTiO₃ oxides are explored as electrocatalysts for hydrogen evolution reaction in acidic solutions. The g-C₃N₄ is a cost-effective, stable, and property tunable catalyst with electrocatalytic properties suitable for HER. This study intends to utilize the advantages of both these by forming the BaTiO₃/g-C₃N₄ composite, to enhance the electrocatalytic properties.</div></div><div><h3>Method</h3><div>The g-C₃N₄ and BaTiO₃ were blended successfully through an annealing process. Various characterization methods, like XRD, SEM, TEM, FTIR, UV, and Raman, confirms the formation of BaTiO₃/g-C₃N₄ composite. Electrochemical analysis for hydrogen evolution reaction (HER) demonstrated enhanced properties for the BaTiO₃/g-C₃N₄ composite with different weight percentages.</div></div><div><h3>Significant findings</h3><div>BaTiO₃ with 1 wt % g-C₃N₄ composite exhibit low overpotential value of 254 mV and Tafel slope with 205 mV/dec. The same sample exhibits enhanced performance in HER activity proving it to be worth investigating more on these 2D incorporated perovskite materials for electrochemical hydrogen evolution reaction. The observed enhanced electrocatalytic performance of the BaTiO₃/g-C₃N₄ composite is attributed to the synergistic effects of BaTiO₃ and g-C₃N₄ creating a new pathway for the development of inexpensive and efficient electrocatalysts.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106214"},"PeriodicalIF":5.5,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the adsorption properties of iodine by nitrogen-rich polycatecholamines and sodium lignosulfonate-modified polycatecholamines","authors":"Chenkun Yu ,&nbsp;Ze Liang ,&nbsp;Ruoyao Zhou ,&nbsp;Tingting Gao ,&nbsp;Fangzhi Zhang ,&nbsp;Congde Qiao ,&nbsp;Jinshui Yao ,&nbsp;Qinze Liu","doi":"10.1016/j.jtice.2025.106212","DOIUrl":"10.1016/j.jtice.2025.106212","url":null,"abstract":"<div><h3>Background</h3><div>Nuclear energy as a kind of clean energy has been vigorously developed. The possibility of nuclear leakage may discharge harmful substances, among which radioactive iodine is one of them. The iodine may be discharged into the environment in the form of vapor and solution, and the effective removal of them has obviously become an important and arduous task.</div></div><div><h3>Methods</h3><div>In this paper, two nitrogen-rich polymers, PY-PEI (poly(polyethyleneimine-pyrogallic)) and LS-PY-PEI (poly(Sodium lignosulfonate-polyethyleneimine-pyrogallic)) were successfully synthesized for iodine adsorption. 3) 3) Significant Findings: The experimental data showed that the capacities of the two for iodine capture in vapor were 3.57 g g^-1 (PY-PEI) and 3.25 g g^-1 (LS-PY-PEI), 1054 mg g^-1 (PY-PEI) and 1035 mg g^-1(LS-PY-PEI) in iodine n-hexane organic solvent. Besides, both of them possessed rapid adsorption. Therefore, two efficient iodine adsorbent materials were successfully synthesized by designing nitrogen-rich sites and electron-rich groups in the molecules.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106212"},"PeriodicalIF":5.5,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning the rheology of copper pastes with reliable printability and enhanced storage stability","authors":"Chunyu Chen ,&nbsp;Jiayi Zhu ,&nbsp;Zhihao Chen ,&nbsp;Qi Jiang ,&nbsp;Huidan Zeng","doi":"10.1016/j.jtice.2025.106222","DOIUrl":"10.1016/j.jtice.2025.106222","url":null,"abstract":"<div><h3>Background</h3><div>Copper pastes have garnered significant attention due to high conductivity and cost-effectiveness versus precious metal pastes. However, unresolved problems like the formation of film collapse, flying ink, burrs and stencil clogging are often caused by their uncontrollable rheological properties during the screen-printing process.</div></div><div><h3>Methods</h3><div>The acrylic resin content in the copper pastes was adjusted to achieve suitable rheological properties of the pastes, such as pseudoplasticity, thixotropy, and yield stress, and further improve printability and long-term storage performance. Significant findings The copper films with 15 wt % acrylic resin content exhibited optimal sintering densification, minimal porosity, 38 % sintering shrinkage, and ultra-low sheet resistance of 3.85 mΩ/sq. This technique enables scalable formulating multicomponent copper electronic pastes with tunable rheological properties for printed circuit applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106222"},"PeriodicalIF":5.5,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studies on the inhibitive effect of ferrozine on the corrosion of mild steel in hydrochloric acid","authors":"Anil Kumar ,&nbsp;Brohmani Bhattacharya ,&nbsp;Chandan Das","doi":"10.1016/j.jtice.2025.106221","DOIUrl":"10.1016/j.jtice.2025.106221","url":null,"abstract":"<div><h3>Background</h3><div>Corrosion poses a great danger to the safety of multiphase oil and gas facilities, leading to high maintenance costs, loss of life, and property loss. Recently, corrosion inhibitors have been most commonly used for metal protection applications.</div></div><div><h3>Methods</h3><div>In this work, ferrozine was utilized as a novel inhibitor for mitigating the mild steel (MS) corrosion in 1 M HCl, and its corrosion-inhibiting effect was investigated using electrochemical (potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS)) and mass loss methods.</div></div><div><h3>Significant Findings</h3><div>Tafel polarization results revealed that the corrosion current density (<em>i_corr</em>) significantly decreased and the polarization resistance increased in the presence of the inhibitor, indicating enhanced corrosion inhibition by ferrozine. The maximum inhibition efficiency of 88.85 % was achieved at a concentration of 1 × 10⁻³ M. The adsorption of ferrozine on the MS surface followed the Langmuir adsorption isotherm. The obtained value of <em>ΔG°_ads</em> (−9.83 kJ mol⁻¹) confirms the physical and self-adsorption of ferrozine molecules on the MS surface. Moreover, field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM) analysis, and X-ray diffraction (XRD) analyses indicated that ferrozine molecules form a protective layer on the surface of MS, which significantly reduces the MS degradation in acid medium.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106221"},"PeriodicalIF":5.5,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic degradation of fluoxetine mediated by CuO/CuWO4 nanostructures","authors":"Laura Cristina Isabel Fonseca Becerra ,&nbsp;João Otávio Donizette Malafatti ,&nbsp;Elaine Cristina Paris ,&nbsp;Miryam Rincón Joya ,&nbsp;Ailton Jose Moreira ,&nbsp;Roberta Yonara Nascimento Reis ,&nbsp;Juliana B. Lima ,&nbsp;Carlos Arturo Parra Vargas ,&nbsp;Angela Mercedes Raba Páez","doi":"10.1016/j.jtice.2025.106215","DOIUrl":"10.1016/j.jtice.2025.106215","url":null,"abstract":"<div><h3>Background</h3><div>Photocatalytic activity of the CuO and CuWO₄, and heterostructured based in these has been thoroughly investigated however, the Fluoxetine (FLX) degradation has not been widely explored for CuO/CuWO₄ with the novel and economical synthesis method proposed in this work.</div></div><div><h3>Methods</h3><div>Four materials were produced by the co-precipitation method CuO, 100Cu/2W, 100Cu/6W, and CuWO₄; 100Cu/2W and 100Cu/6W corresponding to the CuO/CuWO₄ heterostructure according morphological and optical results.</div></div><div><h3>Significant Findings</h3><div>Degradation profile of FLX of 100Cu/6W and CuWO₄ samples showed the lowest removal over time, while the CuO and 100Cu/2W samples showed the best performances up to 30 min under UV-C light. For the 100Cu/2W sample (CuO/CuWO₄ heterostructure), the kinetic constant value was 82.3×10⁻² min⁻¹, which confirms its superiority for FLX degradation. CuWO₄ (<em>E_g</em> = 2.70 eV) can retain the lower energy photons and after new photon absorption, transfer the <em>e⁻</em> to CuO (<em>E_g</em> = 3.71 eV). Furthermore, the characterization results show that the 100Cu/2W heterostructure has <em>E_g, S_BET</em>_, and particle size values intermediate between CuO and CuWO₄, contributing to its better performance. Additionally, for all the materials TFMP, PPMA, and TP formation was confirmed in the first minutes of degradation. These new compounds can interact with the photocatalyst and block photocatalytic sites however, the performance of 100Cu/2W was maintained throughout the degradation time, confirming its photoactivity even in a more complex mixture containing FLX and its transformation products. The recyclability of 100Cu/2W for FLX degradation at 30 min was investigated; FLX removal increases to over 95% and is maintained until the last degradation cycle, confirming the potential of CuO/CuWO₄ for application in water treatment processes. Additionally, mass spectrometry analyses were carried out for the sample subjected to photocatalytic degradation in 30 min in the presence of 100Cu/2W. There, six transformation products (TP) were identified in the sample, confirming that the degradation mechanisms of FLX involve different routes.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106215"},"PeriodicalIF":5.5,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-situ synchrotron X-ray study on microstructure and stress evolutions of electroplated copper upon self-annealing","authors":"Wan-Zhen Hsieh ,&nbsp;Pei-Tzu Lee ,&nbsp;Cheng-Yu Lee ,&nbsp;Yu-Hsuan Huang ,&nbsp;Ching-Yu Chiang ,&nbsp;Cheng-En Ho","doi":"10.1016/j.jtice.2025.106194","DOIUrl":"10.1016/j.jtice.2025.106194","url":null,"abstract":"<div><h3>Background</h3><div>The self-annealing behavior of electroplated copper (Cu) at room temperature is gaining attention in the microelectronics industry due to its significant impact on reliability issues such as substrate warpage and electrical resistivity.</div></div><div><h3>Methods</h3><div>In this study, in-situ analysis of the microstructure transition and stress relaxation of the electroplated copper upon self-annealing was conducted via synchrotron white X-ray nanodiffraction (beamline 21A, Taiwan Photon Source) and grazing-incidence X-ray diffraction (beamline 17B1, Taiwan Light Source).</div></div><div><h3>Significant Findings</h3><div>Remarkable relaxations of deviatoric stress and absolute strain component along the [002] direction were closely related to the Cu grain growth and crystallographic reorientation at the early stage of self-annealing, and a complete stress/strain relaxation can be achieved with the cessation of microstructure transition. The in-situ synchrotron X-ray studies provided an insight into Cu self-annealing mechanism, offering valuable information for improving Cu interconnect reliability.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106194"},"PeriodicalIF":5.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cobalt-doped ferrihydrite with silicon content for efficient decomposition of ozone under dry and humid conditions","authors":"Qi Shao ,&nbsp;Mengyun Yang ,&nbsp;Xu Chu ,&nbsp;Jiang Zhang ,&nbsp;Chao Long","doi":"10.1016/j.jtice.2025.106218","DOIUrl":"10.1016/j.jtice.2025.106218","url":null,"abstract":"<div><h3>Background</h3><div>Recently, the problem of ground-level ozone (O₃) pollution seriously endangers the health of human. The development of an effective catalyst for the catalytic decomposition of ozone at low temperatures is urgent but challenging.</div></div><div><h3>Methods</h3><div>This research aimed to develop a cobalt-doped silicon-containing ferrihydrite (Fh) catalyst (Co-SiFh) by a simple coprecipitation method. As comparisons, the single cobalt-doped and silicone-stabilized Fh were also prepared. ICP-OES, XRD, FT-IR, XPS, H₂-TPR, O₂-TPD were used to characterize the chemical structure of the different catalysts. Besides the catalytic performance test, <em>in situ</em> reaction experiments were used to explore the catalytic reaction mechanism.</div></div><div><h3>Significant findings</h3><div>Compared with the original Fh catalyst, the ozone conversion of Co-Sifh increased from <em>ca.</em> 95 % to ca. 100 % and from ca. 3 % to ca. 80 % under dry and humid conditions, respectively. Moreover, the Co-SiFh catalyst also maintained stable catalytic ozone degradation effect in a long-term reaction progress of 30 h. The excellent catalytic performance of the catalyst in humid airflow is attributed to the newly formed hydroxyl active sites around Co-O-Fe through the strong interaction between Fe and Co. In addition, the specific active site (O*-H₂O) in the modified catalyst is also a key factor to improve the moisture resistance of Fh.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106218"},"PeriodicalIF":5.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}