Journal of the Taiwan Institute of Chemical Engineers最新文献

{"title":"Impact of thixoforging and post-thixoforging T6 heat treatment on the microstructural, mechanical, and tribological properties of AA2024 alloy fabricated by powder metallurgy","authors":"Furkan Berkay Tamer,&nbsp;Aykut Çanakçı,&nbsp;Müslim Çelebi","doi":"10.1016/j.jtice.2025.106239","DOIUrl":"10.1016/j.jtice.2025.106239","url":null,"abstract":"<div><h3>Background</h3><div>AA2024 alloy is known for its high strength and wear resistance, but conventional manufacturing methods have limitations such as micro-porosity. This study aims to overcome these limitations by applying thixoforging and T6 heat treatment to AA2024 alloy produced via powder metallurgy.</div></div><div><h3>Methods</h3><div>In this study, AA2024 alloy was fabricated by powder metallurgy, and the effect of thixoforging and post-thixoforging T6 heat treatment on the microstructural, mechanical, and tribological properties were analyzed using optical and SEM microscopy, density measurements, hardness and tensile strength tests, and ball-on-disk wear tests.</div></div><div><h3>Significant Findings</h3><div>Thixoforging at 595 °C, 615 °C, and 635 °C significantly enhanced material characteristics by reducing porosity, refining the grain structure, and achieving a maximum relative density of 99.45 %. T6 heat treatment further strengthened the alloy by promoting the precipitation of Al₂Cu and Al₂CuMg phases. Results showed that hardness increased approximately up to 48 % after thixoforging, with an additional 22 % improvement following T6 treatment compared to untreated AA2024 alloy. Besides, yield strength rose by 52 %, while ultimate tensile strength improved by 58 %, driven by precipitation hardening. Tribological evaluations revealed an 85 % reduction in wear rate post-thixoforging, further decreasing after heat treatment due to enhanced oxide film formation. The dominant wear mechanism transitioned from adhesive wear and delamination to predominantly abrasive wear.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106239"},"PeriodicalIF":5.5,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297509","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":"Intrinsic thermal hazard analysis of tetrazole energetic compounds: A macroscopic-microscopic investigation perspective","authors":"Xiaoliang Zhang ,&nbsp;Yijin Wen ,&nbsp;Jun Zhang ,&nbsp;Shengnan Ma ,&nbsp;Yanli Zhao ,&nbsp;Xuehui Wang ,&nbsp;Kun Yan ,&nbsp;Yetian Wang ,&nbsp;Cuihua Zhao","doi":"10.1016/j.jtice.2025.106234","DOIUrl":"10.1016/j.jtice.2025.106234","url":null,"abstract":"<div><h3>Background</h3><div>Tetrazole energetic compounds present considerable thermal hazard, limiting their engineering applications.</div></div><div><h3>Methods</h3><div>The thermal decomposition behavior of 1H-Tetrazole and its derivative was comprehensively investigated by using DSC and RSD, with the ‘pure’ exothermic behavior precisely quantified through the AKTS decoupling technique. Additionally, the decomposition kinetic model was established by experiments with hypothetical model fitting method. Finally, DFT simulations, along with TG-IR and GC/MS analyses, studied the thermal decomposition mechanism.</div></div><div><h3>Significant Findings</h3><div>The endothermic-exothermic coupling effect of 1H-Tetrazole was resolved, with ∆<em>H</em> and <em>q</em>_gas recorded at 3276.0 J·g^-1 and 32.9 mol·kg^-1, respectively, with <em>P</em>_max reaching 107.1 bar. The ∆<em>H</em> and <em>q</em>_gas of Diisopropyl Ammonium Tetrazolide were 1388.7 J·g^-1 and 13.9 mol·kg^-1, respectively. The 'N-order + autocatalytic' two-step decomposition kinetic models were established. A two-step decomposition mechanism involving 'isomerization-ring opening' and 'autocatalysis' of 1H-Tetrazole was proposed. The highly reactive intermediate nitrene is the fundamental substance driving the autocatalytic chain reaction, whereas the metastable intermediates HN₃ and NH₂CN constitute the primary sources of risk. This study clarifies the strong exothermic mechanism and overpressure causes contributing to the multi-path synergy of 1H-Tetrazole from a multi-dimensional viewpoint, proposing thermal safety recommendations from the dual views of intrinsic safety and passive prevention and control.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106234"},"PeriodicalIF":5.5,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297508","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 construction of WO3 nanorods on the carbon microsphere composite for effective electrochemical determination of mesotrione herbicide in environmental samples","authors":"Anupriya Jeyaraman ,&nbsp;Sivakumar Musuvadhi Babulal ,&nbsp;Tse-Wei Chen ,&nbsp;Sivaprakash Sengodan ,&nbsp;Jaysan Yu ,&nbsp;Shen-Ming Chen ,&nbsp;Ruey-Shin Juang","doi":"10.1016/j.jtice.2025.106226","DOIUrl":"10.1016/j.jtice.2025.106226","url":null,"abstract":"<div><h3>Background</h3><div>Herbicides are chemical agents that promote plant and crop growth by killing weeds and other pests. However, unconsumed and excessively used herbicides may enter groundwater and agricultural areas, damaging water, air, and soil resources. Mesotrione (MT) is an extensively used herbicide to cultivate corn, sugarcane, and vegetables. Excessive consumption of MT residues pollutes the soil, water, and environmental systems.</div></div><div><h3>Methods</h3><div>Henceforth, the potential electrocatalyst of the tungsten trioxide nanorods on the carbon microsphere (WO₃/C) composite was synthesized for nanomolar electrocatalytic detection of MT. The electrocatalysts of WO₃/C were synthesized hydrothermally, and the WO₃/C composite was in-situ constructed by using the reflux method.</div></div><div><h3>Significant findings</h3><div>Remarkably, the as-prepared WO₃/C composite displayed a fantastic sensing platform for MT, characterized by an astonishingly nanomolar detection limit (10 nm), notable sensitivity (1.284 µA µM^-1 cm^-2), exceptional selectivity, and amazing stability. The actual sample test was carried out using MT added in food and environmental samples of corn, sugar cane, sewage water, and river water. The minimum MT response recovery in vegetable and water samples was determined to be approximately 97 % and 99 %, respectively. The results indicate that the WO₃/C composite is an effective electrode material for real-time MT measurement in portable devices.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106226"},"PeriodicalIF":5.5,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280634","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":"Sustainable extraction of thiophene from coal tar model oil utilizing deep eutectic solvents: Insights from liquid-liquid equilibrium phase behavior and intermolecular interactions","authors":"Dongmei Xu ,&nbsp;Zhe Zhang ,&nbsp;Weizhuo Li ,&nbsp;Jun Gao ,&nbsp;Lianzheng Zhang ,&nbsp;Yixin Ma ,&nbsp;Yinglong Wang","doi":"10.1016/j.jtice.2025.106229","DOIUrl":"10.1016/j.jtice.2025.106229","url":null,"abstract":"<div><h3>Background</h3><div>Coal tar contains numerous valuable chemical compounds, but the presence of sulfur compounds during its utilization poses significant environmental pollution concerns.</div></div><div><h3>Methods</h3><div>In this study, two novel deep eutectic solvents, tetrabutylammonium bromide (TBAB): monoethanolamine (MEA) (1:2 molar ratio) and tetrabutylammonium bromide (TBAB): diethanolamine (DEA) (1:2 molar ratio), were designed and synthesized for thiophene extraction. two DESs were employed as extractants to separate thiophene from coal tar model oil by liquid-liquid extraction, and dimethyl sulfoxide (DMSO) was adopted as an organic extractant for comparison. The liquid-liquid equilibrium behavior for the quaternary mixtures (<em>n</em>-hexane + toluene + thiophene + DESs / DMSO) were investigated at two temperatures of 298.15 K and 308.15 K.</div></div><div><h3>Significant Findings</h3><div>The extraction performance of the two DESs and DMSO for thiophene was evaluated using distribution coefficients (<em>D</em>) and selectivity (<em>S</em>). The results indicate that increased temperature positively impacts separation efficiency. The DES (TBAB: DEA) demonstrates superior performance for extracting thiophene compared to (TBAB: MEA). The experimental data was fitted by the NRTL model with small deviations. Additionally, Quantum calculations revealed that thiophene-DES interactions were primarily dominated by van der Waals forces and hydrogen bonding<em>.</em></div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106229"},"PeriodicalIF":5.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271652","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":"Biopolymer Xylan as a novel green corrosion inhibitor for AISI 5140 steel and copper in H2SO4 medium","authors":"Jilna Jomy ,&nbsp;Deepa Prabhu","doi":"10.1016/j.jtice.2025.106225","DOIUrl":"10.1016/j.jtice.2025.106225","url":null,"abstract":"<div><h3>Background</h3><div>AISI 5140 steel and copper, widely used in water cooling and desalination systems, are prone to corrosion in harsh environments. To address this, Xylan (XL) was studied as a novel green corrosion inhibitor in H₂SO₄ medium.</div></div><div><h3>Methods</h3><div>A custom design approach of Design of Experiments (DoE) was introduced to optimize key parameters. The inhibition performance was evaluated using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP), while surface morphology was examined through SEM and EDX analysis. The mechanism of inhibition of XL was explained using DFT studies.</div></div><div><h3>Significant Findings</h3><div>The developed model demonstrated the significance of medium concentration and temperature on inhibition efficiency. Experimental validation confirmed the model’s accuracy. For AISI 5140 steel, a maximum inhibition efficiency of 84.05 % was achieved at 0.1 M H₂SO₄, 0.25 g/L XL, and 50 °C. For copper, the highest efficiency of 77.15 % was observed at 0.1 M H₂SO₄, 0.25 g/L XL, and 50 °C. The results confirm XL’s potential as a sustainable corrosion inhibitor and highlight the effectiveness of the DoE approach in predicting inhibitor performance. This study underscores the viability of XL for corrosion protection in industrial applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106225"},"PeriodicalIF":5.5,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263643","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":"Stability analysis of partially premixed methane-air flames in a novel micro-mixing micro-combustor","authors":"Sreejith Sudarsanan ,&nbsp;Akram Mohammad ,&nbsp;Prabhu Selvaraj ,&nbsp;Khalid A. Juhany ,&nbsp;Radi A. Alsulami ,&nbsp;Sudarshan Kumar ,&nbsp;Ratna Kishore Velamati","doi":"10.1016/j.jtice.2025.106219","DOIUrl":"10.1016/j.jtice.2025.106219","url":null,"abstract":"<div><h3>Background</h3><div>Micro-mixing is an innovative technique adopted in large-scale combustion to enhance flame stabilization. Flame stability enhancement is achieved as the flame structure is transformed from diffusion to partially premixed type. The present work is the first attempt to introduce micro-mixing in micro-scale combustion. A slot (micro-mixing slot) is provided in the centrally slotted bluff body to enable a small quantity of air gets mixed with fuel which subsequently enhances the flame stabilization in a micro-combustor. The angle of the micro-mixing slot is optimized by considering varied inlet velocity and equivalence ratio range. Moreover, the local mixing characteristics, variation in flame dynamics at different inlet conditions and lift-off dynamics were investigated in the present study.</div></div><div><h3>Methods</h3><div>The analysis was conducted numerically by adopting steady state and transient (higher velocity and lift-off conditions) laminar simulations at different inlet velocities and equivalence ratios.</div></div><div><h3>Significant Findings</h3><div>The local equivalence ratio at the central slot interface (φ_inter) plays the key role in anchoring the flame to bluff body as well as in the transformation of flame structure. The effect of φ_inter (cold flow) was investigated for different micro-mixing slot at varied inlet conditions and a new criterion to predict stable flames using cold flow itself, was developed. The range obtained is <strong>2 &lt; φ_inter &lt; 5</strong> for cold flow to achieve stable flames. The transformation of flame structure from diffusion to partially premixed type and the subsequent flame stability enhancement was analyzed by comparing combustors with and without micro-mixing. The magnitude of micro-mixing slot angle was optimized as ‘60°′ by analyzing the flame stabilization characteristics and thermal performance of the combustor at different inlet conditions. The trend in flame dynamics and wall temperature distribution by varying inlet velocity (at φ_g = 1.0) and global equivalence ratio (at V_air = 1m/s) were analyzed and furthermore the lean stability limit was determined. The lift-off mechanism was investigated at stoichiometric and lean global equivalence ratios - φ_g = 1.0, 0.8 and 0.5. Even at the lift-off condition, heat transfer from flame to bluff body tip was prominent, which enabled enhanced flame stabilization. As the mixture became leaner, the reaction zone expanded, and the flame shifted radially toward the fuel side.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106219"},"PeriodicalIF":5.5,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263489","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":"Thickness-dependent crystallization and mechanical properties of thermoplastic nanofilms in nonsolvent environments","authors":"Chih-Jung Lin ,&nbsp;Heng-Kwong Tsao ,&nbsp;Yu-Jane Sheng","doi":"10.1016/j.jtice.2025.106233","DOIUrl":"10.1016/j.jtice.2025.106233","url":null,"abstract":"<div><h3>Background</h3><div><em>:</em> Nanofilms exhibit distinct behaviors compared to bulk materials, particularly concerning the effects of film thickness on melting temperature and Young’s modulus, which are not yet fully understood.</div></div><div><h3>Methods</h3><div><em>:</em> In this study, dissipative particle dynamics simulations are used to explore the crystallization and stiffness of nanofilms immersed in a non-solvent bath.</div></div><div><h3>Significant findings</h3><div><em>:</em> The solid state of the nanofilm, as confirmed by consistent melting temperatures determined from the polymer's radius of gyration, heat capacity, and crystallinity, indicates that thinner nanofilms have higher melting temperatures. Through uniaxial extension, the stress-strain curve of the nanofilm is obtained, and Young’s modulus generally increases toward a plateau with decreasing film thickness. Under strain, the decrease in crystallinity correlates with increased internal energy and positive entropy change, in contrast to typical rubber elasticity where entropy decreases upon stretching. It is found that local crystallinity near the interface is significantly higher than in the central region. Both regions show an increase in crystallinity as thickness diminishes, due to the surrounding non-solvent environment enhancing polymer alignment and crystallization. As the film thickness decreases to the nanoscale, the influence of the interfacial region becomes more pronounced, thereby increasing the film’s stiffness.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106233"},"PeriodicalIF":5.5,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263580","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":"Coupled Hybrid Neural Network Models with Alarm Threshold Optimization for Early Warning of Abnormal Load Variations in Green Ammonia Production","authors":"Hang Zhao ,&nbsp;Wei Fan ,&nbsp;Xin Deng ,&nbsp;Weiliang Jiang ,&nbsp;Jianan Xu ,&nbsp;Shiyang Chai ,&nbsp;Li Zhou ,&nbsp;Xu Ji ,&nbsp;Ge He","doi":"10.1016/j.jtice.2025.106224","DOIUrl":"10.1016/j.jtice.2025.106224","url":null,"abstract":"<div><h3>Background</h3><div>Green ammonia, as an excellent clean energy and hydrogen carrier, is crucial for integrating and utilizing renewable energy. However, frequent switching of production loads in the ammonia synthesis poses a significant increase in chemical safety risks, becoming a key technical challenge restricting large-scale industrialization of green ammonia. As a crucial component of safety management systems, accurately predicting and identifying abnormal conditions during load variation processes has become an urgent and critical issue to address.</div></div><div><h3>Method</h3><div>This study proposes an early warning method for abnormal conditions in green ammonia processes, combining deep learning with optimized alarm threshold strategies.Initially, based on process mechanisms and analysis of complex network relationship, determine the key variable with highest importance as the early warning variable. Subsequently, a hybrid LSTM-GRU model operating in parallel for time series prediction is proposed, with output results obtained through weighted allocation. Finally, the change rate in process parameters within the green ammonia process is introduced as a warning variable, optimized using ROC curves for threshold setting.</div></div><div><h3>Significant findings</h3><div>The proposed method was validated by applying it to a dynamic model of the green ammonia process constructed on the Honeywell UniSim^@ simulation platform. The results demonstrate that the model accurately captures the dynamic variations of the production process. The average R² value of the model prediction accuracy for load-varying processes exceeds 0.995, and the model exhibits the capability to extend the prediction horizon to 5 minutes. Furthermore, the optimized threshold enables precise diagnosis of abnormal conditions during load variations in the green ammonia process, achieving a detection rate of 99.36%. This provides an effective research tool and methodology for early safety warning in green ammonia production processes.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"174 ","pages":"Article 106224"},"PeriodicalIF":5.5,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263490","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":"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}