Journal of the Taiwan Institute of Chemical Engineers最新文献

{"title":"Machine learning predicts properties of hydrochar derived from digestate","authors":"Wei Wang ,&nbsp;Jo-Shu Chang ,&nbsp;Duu-Jong Lee","doi":"10.1016/j.jtice.2024.105862","DOIUrl":"10.1016/j.jtice.2024.105862","url":null,"abstract":"<div><h3>Background</h3><div>Hydrothermal carbonization (HTC) is a promising solution for digestate valorization, and machine learning (ML) is a helpful tool for modeling hydrochar properties.</div></div><div><h3>Methods</h3><div>This study utilized two ensemble tree-based ML algorithms, the random forest (RF) and the eXtreme Gradient Boosting (XGB), for predicting digestate-derived hydrochar yield, properties (Cc, Hc Nc, Oc, <em>Sc</em>, Ashc, HHVc), and HTC process index including energy yield (EY), energy densification (ED), and carbon recovery (CR).</div></div><div><h3>Significant Findings</h3><div>In most cases, XGB showed better predictive performance, including yield, Cc, Hc, Nc, Ashc, HHVc, EY, and ED prediction, while RF revealed better performance in Oc, <em>Sc</em>, and CR prediction. XGB and RF showed satisfactory performance in predicting Cc, Hc, Oc, <em>Sc</em>, Ashc, and HHVc, with test R² of 0.856–0.942 and 0.864–0.947, respectively. The multi-task model for predicting yield and hydrochar properties (Cc, Hc, Nc, Oc, <em>Sc</em>, Ashc, HHVc) was also developed. XGB reveals better performance than RF, with the average test R² of XGB could achieve 0.895, which is comparable to the current published work. The SHapley Additive exPlanations (SHAP) analysis reveals that digestate ash content, C content, and HTC temperature (T) dominate multi-task predictions. The chain regressor technique enhanced the model performance toward multi-task prediction, including EY, ED, and CR: in RF, the test R² of ED and CR were increased by 38 % and 26 %, respectively, while in XGB, the test R² of ED was improved by 48 %. The developed ML model in this work could satisfactorily predict hydrochar properties, forming a basis for optimizing HTC process parameters and determining suitable applications for digestate valorization. ML effectively maps the correlation between input features and output responses, making ML a time-efficient and practicable tool for prediction tasks and identifying essential features, especially for multi-output prediction with high-dimension.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105862"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131829","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":"Optimizing solar panel performance with new algorithm incorporating duct with helical tape and hybrid nanofluid","authors":"A. Anisi ,&nbsp;M. Sheikholeslami ,&nbsp;Z. Khalili ,&nbsp;Faranack M. Boora","doi":"10.1016/j.jtice.2024.105908","DOIUrl":"10.1016/j.jtice.2024.105908","url":null,"abstract":"<div><h3>Background</h3><div>This work introduces an innovative configuration for intensifying the productivity of solar photovoltaic-thermal units (PVT) through the incorporation of a cooling system. Notably, a thermoelectric module is strategically added to further intensification of produced electricity.</div></div><div><h3>Methods</h3><div>This unit has a duct where the hybrid nanofluid passes through which a turbulator is placed. Furthermore, this system has a jet impingement component. In a departure from traditional methodologies, this investigation optimizes the PVT unit's overall effectiveness by employing an algorithm based on machine learning. Three critical goal functions are considered in this optimization process: <em>Ep</em> (pumping power), <em>CO</em>₂ − <em>m</em> (CO₂ mitigation), and <em>Profit</em> of the system, each of which respectively represents the generated electrical energy for energy analysis, the reduction of produced carbon for environmental evaluation and the financial gain from employing the present system for economic assessment. This innovative approach not only contributes to advancing the field of solar photovoltaic-thermal systems but also underscores the importance of optimizing these units for increased energy efficiency, reduced environmental impact, and enhanced economic viability in the context of renewable energy technologies.</div></div><div><h3>Significant findings</h3><div>The connections between the PVT's variable mappings, comprising the input parameters of the fluid velocity (<em>V_Tube</em>), solar radiation (<em>G</em>), jet impingement velocity (<em>V_J</em>), and helical tape ratio (<em>R</em>) and the outputs of the <em>E_p, Profit, CO</em>₂ − <em>m</em>, are established through the implementation of various models. The findings suggest that the GPR (Gaussian Process Regression) model is the most appropriate, as evidenced by its <em>R</em>² values of 0.9987, 1, and 1 for <em>E_p, Profit</em>, and <em>CO</em>₂ − <em>m</em>, correspondingly. The NSGA-II technique is utilized in this study. This procedure is used to ascertain the Pareto optimal solutions with respect to all three conflicting objectives. The outcome illustrates the Pareto graphs, and each of them in provides a suitable compromise between all objectives without degrading any of them.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105908"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131834","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":"Experimental and numerical study on the quasi-periodic pulsation characteristics of cavitation flow in a control valve","authors":"Xiaogang Xu ,&nbsp;Jinghe Bi ,&nbsp;Liang Fang ,&nbsp;Anjun Li ,&nbsp;Zhenbo Wang ,&nbsp;Qiang Li","doi":"10.1016/j.jtice.2024.105911","DOIUrl":"10.1016/j.jtice.2024.105911","url":null,"abstract":"<div><h3>Background</h3><div>Cavitation poses a significant challenge for high-pressure drop control valves, as it can lead to considerable damage, including noise and vibration. The unsteady pulsation characteristics of cavitation flow, which are essential for comprehending flow-induced noise and vibration, remain inadequately understood.</div></div><div><h3>Methods</h3><div>This study investigates the unsteady quasi-periodic pulsation characteristics of cavitation flow in a control valve through experimental visualization and numerical modeling using the Large Eddy Simulation (LES) model.</div></div><div><h3>Significant Findings</h3><div>The results reveal that a key feature of throttling cavitation flow is the continuous shedding of hollow circular cavity structures in a quasi-periodic manner from the throttling section to the downstream region. A strong interaction exists between the evolution of the main vortex structures and the cavity structures. The unsteady characteristics of the flow parameters are significantly influenced by the quasi-periodic evolution of the large-scale cavity-vortex structure. The primary factor affecting the fluctuating characteristics of throttling cavitation flow is the quasi-periodic transfer of mechanical energy induced by the evolution of large-scale cavity-vortex structures. Under more severe cavitation conditions, the unsteady pulsation characteristics of velocity and pressure become more pronounced.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105911"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131845","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":"Bibliometric insights into metal-organic frameworks modified with metal-based materials for hydrogen storage: Prospects, opportunities and challenges","authors":"B.A. Abdulkadir ,&nbsp;H.D. Setiabudi","doi":"10.1016/j.jtice.2024.105893","DOIUrl":"10.1016/j.jtice.2024.105893","url":null,"abstract":"<div><h3>Backgrounds</h3><div>Solid-state hydrogen storage technology is known for its reliability and cost-effectiveness. Porous materials such as metal-organic frameworks (MOFs) are a major area of interest because of their high surface area and porosity. Recent advancements in modifying MOFs with metal-based materials offer new avenues for enhancing their storage capacity and stability. However, the research landscape in this area remains complex, necessitating a comprehensive overview.</div></div><div><h3>Methods</h3><div>This review critically examines recent studies on MOFs using metal-based materials to enhance hydrogen storage capacities. A bibliometric analysis was conducted to identify and analyse the key research related to MOFs, such as publication trends, author collaborations, and research clusters. The paper also explores MOFs' synthesis, characterisation, and hydrogen adsorption processes. Visual analytical tools were employed to map research trajectories and identify gaps in the literature.</div></div><div><h3>Significant findings</h3><div>The analysis reveals a considerable increase in publications related to this field, with a rise in interdisciplinary collaborations between materials science and engineering. Key findings highlight that metal modifications enhance hydrogen storage kinetics. Despite the promising advancements, challenges persist, including material stability under high operational conditions. The work further identifies the current state of research and outlines critical opportunities for future exploration, such as integrating machine learning techniques. Key research trends and collaborative networks were identified, shedding light on the advancements in this area.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105893"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131214","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":"Insight into the synergy effect of BDD anode for peroxymonosulfate activation: The radical and non-radical mechanisms","authors":"Huanting Bai ,&nbsp;Tiantian Zhang ,&nbsp;Yatong Jing ,&nbsp;Xiaohan Wang ,&nbsp;Juan Guo ,&nbsp;Chao Bai ,&nbsp;Tuo Wang ,&nbsp;Mingming Ta ,&nbsp;Fuchun Zhang ,&nbsp;Yanzhong Zhen","doi":"10.1016/j.jtice.2024.105855","DOIUrl":"10.1016/j.jtice.2024.105855","url":null,"abstract":"<div><h3>Background</h3><div>The widespread use of carbamazepine (CBZ) has led to environmental contamination of water bodies, raising concerns about water quality safety and ecosystem health.</div></div><div><h3>Methods</h3><div>In this study, an electrochemical process for activating peroxymonosulfate is conducted, with boron-doped diamond as anode (E-BDD-PMS). The BDD anode possesses a high over-potential for oxygen, which effectively suppresses the generation of oxygen evolution side reactions.</div></div><div><h3>Significant findings</h3><div>Under the optimal condition, 89.57 % of CBZ could be removed within 40 min. The quenching experiments and EPR analysis revealed that both free radicals (•OH and <span><math><msubsup><mtext>SO</mtext><mrow><mn>4</mn></mrow><mrow><mo>•</mo><mo>−</mo></mrow></msubsup></math></span>) and nonradicals (¹O₂) participated in the reaction. Specifically, the CBZ oxidation mainly occurs via four pathways: DET, PMS oxidation, radical oxidation, nonradical oxidation. The contributions of these four pathways are 11.67 %, 5.84 %, 32.72 % and 50.08 %, respectively. Meanwhile, the removal of seven different pollutants are also studied. Based on the experimental results, the E-BDD-PMS process has a great promise in organic contaminants degradation.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105855"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131354","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":"Employing economic model predictive control for improving efficiency of the batch reactor carrying out decomposition of the Di-Cumyl-Peroxide","authors":"Atanu Panda ,&nbsp;Subhasish Mahapatra ,&nbsp;Achu Govind K.R. ,&nbsp;Rames C. Panda","doi":"10.1016/j.jtice.2024.105864","DOIUrl":"10.1016/j.jtice.2024.105864","url":null,"abstract":"<div><h3>Background:</h3><div>Batch reactors are used to produce agro-herbicides, often operating under metastable conditions. Exothermic reactions within these reactors can rapidly release large amounts of chemical energy, increasing the reaction rate and risking a runaway excursion. To prevent excessive heat dissipation, the reactor must operate within a lower mesophilic temperature range. The decomposition of dicumyl-peroxide is a notable example of a runaway reaction, characterized by multi-order thermo-kinetics with an Arrhenius temperature dependency. This decomposition rate is highly sensitive to factors such as Damkohler’s number, exothermic enthalpy, oxygen presence, substrate concentration, and initial temperature variations. Many kinetic parameters are not directly measurable in real-time applications.</div></div><div><h3>Method:</h3><div>(i) An economic stage cost is derived and integrated into a model-predictive-control (MPC) law to regulate coolant flow and manage exothermic heat dissipation, mitigating unmeasured disturbances and faults. (ii) For estimating unmeasured reactor states and uncertainties, a cubature Kalman filter with a singular-value-decomposition approach has been utilized. (iii) Event-triggered scheduling combined with cubature Kalman filter, reduced communication resource usage.</div></div><div><h3>Significant findings</h3><div>: The economics MPC controller tested on the dicumyl-peroxide system is compared with a standard nonlinear MPC rule, considering factors like cooling period, decomposition rate, and observer accuracy which ensures the effectiveness of the proposed algorithm.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105864"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132355","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":"Dynamic optimization for SP of control loops using adaptive APC techniques","authors":"Zhu Wang ,&nbsp;Hehui Zhang ,&nbsp;Donghui Liu","doi":"10.1016/j.jtice.2024.105858","DOIUrl":"10.1016/j.jtice.2024.105858","url":null,"abstract":"<div><h3>Background</h3><div>Advanced Process Control (APC) is widely applied in the industrial chemical sector. Dynamic Matrix Control (DMC) is favored for its ability to handle complex optimization control problems involving multiple variables and constraints. However, changes in working conditions over long periods of industrial operation can lead to a mismatch between the predictive model and the actual system. To achieve adaptivity to working conditions, this paper proposes a setpoint (SP) dynamic optimization method for control loops based on adaptive APC techniques.</div></div><div><h3>Methods</h3><div>Firstly, an identification algorithm with Nussbaum gain is employed to update the system model in real-time. Secondly, the predictive model is adaptively updated through digital testing after changes in working conditions. Subsequently, the weight coefficients and constraints of the performance index are adaptively adjusted. Finally, this paper employs the Memory-GA-PSO (MGAPSO) algorithm to solve the performance index with varying constraints and dimensions with the goal of optimizing the SP trajectory efficiently.</div></div><div><h3>Significant findings</h3><div>The experimental results validated the accuracy of the identification algorithm and the effectiveness of the adaptive APC techniques. The adaptive APC techniques proposed in this paper achieve self-adaptation to working conditions, ensuring the long-term effectiveness of advanced control schemes and effectively avoiding model mismatch.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105858"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132356","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":"Enhanced mixing in a novel microchannel equipped with a helical micromixer: Investigation on the hydrodynamic characteristics of water/butanol two-phase system","authors":"Sobhan Farahani,&nbsp;Salman Movahedirad,&nbsp;Mohammad Amin Sobati","doi":"10.1016/j.jtice.2025.105985","DOIUrl":"10.1016/j.jtice.2025.105985","url":null,"abstract":"<div><h3>Background</h3><div>Passive mixers within microchannels are fascinating because they do not require external energy or complicated parts; instead, they utilize the natural dynamics of fluids within microchannels to achieve effective mixing and increase the interfacial area in two-phase flow.</div></div><div><h3>Methods</h3><div>Water-butanol system, known for partial miscibility, is used to investigate the efficacy of the proposed microchannel. The dimensions of the employed microchannel was 800 μm diameter and 20 cm length, incorporates a stainless-steel helical wire (250 μm diameter) with different step lengths. Both fluids are introduced at equal flow rates (ranging from 0.1 to 0.8 mL/min) under standard conditions, generating different flow patterns. Image processing techniques is used to demonstrate the effectiveness of the helical wire within microchannel system.</div></div><div><h3>Significant findings</h3><div>The study reveals a significant reduction in droplet average diameter from 950 µm to 400 µm within a flow range of 0.3–0.4 mL/min, indicating improved mixing efficiency. The passive mixer plays a crucial role in reducing mixing time (t₉₅) and the distance for complete mixing, achieving full mixing at 12.4 mm from the microchannel entrance compared to 62.7 mm without the mixer. These findings suggest substantial advancements in microchannel technologies, particularly for applications such as liquid-liquid extraction, by enhancing efficiency and functionality.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"170 ","pages":"Article 105985"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145147","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":"pH-responsive poly(acrylic acid) coated mesoporous silica nanoparticles for controlled abamectin release: Synthesis, characterization, and agricultural application","authors":"Peng Xu ,&nbsp;Jiawei Bao ,&nbsp;Qun Li ,&nbsp;Weishan Shi ,&nbsp;Gang Xing ,&nbsp;Zhaogang Teng","doi":"10.1016/j.jtice.2024.105861","DOIUrl":"10.1016/j.jtice.2024.105861","url":null,"abstract":"<div><h3>Background</h3><div>Smart pesticides, capable of responding to environmental stimuli, hold promise for achieving precise and on-demand release of pesticides, thereby reducing environmental risks and optimizing pesticide utilization.</div></div><div><h3>Methods</h3><div>Herein, we prepared a novel composite nanoparticle with a core-shell structure of poly(acrylic acid)-coated mesoporous silica by distillation precipitation polymerization method, which is simple and efficient. Then, abamectin was successfully loaded by impregnation adsorption, and a novel pH-responsive controlled-release pesticide formulation, Abamectin-MSN@PAA, was prepared.</div></div><div><h3>Significant</h3><div>Findings In this work, Abamectin-MSN@PAA exhibited a loading content of 23.79 % and an average particle size of approximately 272.1 nm. Notably, the formulation demonstrated acid-responsive release kinetics, with cumulative release percentages of 85.91 %, 69.03 %, and 53.44 % observed at pH values of 5, 7, and 9, respectively, after 96 h. Moreover, Abamectin-MSN@PAA effectively preserved abamectin from degradation under UV light exposure. In comparison with abamectin suspension, Abamectin-MSN@PAA exhibited superior adhesion to radish leaves and demonstrated increased aphid mortality in bioassay experiments. Following 7 days of drug spraying, the aphid survival rate was 26.67 % for Abamectin (40 mg <em>L</em>⁻¹) and only 18.3 % for Abamectin-MSN@PAA (40 mg <em>L</em>⁻¹). These findings underscore the potential of pH-responsive poly(acrylic acid)-coated mesoporous silica nanoparticles as a versatile platform for controlled pesticide delivery, thereby enhancing pesticide bioavailability and efficacy in agriculture.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105861"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131213","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":"A novel binary bismuth molybdate-perovskite type Strontium Niobate for efficient photocatalytic degradation of ciprofloxacin","authors":"Osamah Alduhaish ,&nbsp;Govindasamy Suganya ,&nbsp;Abdalrahman Alajmi ,&nbsp;Abdellatif M. Sadeq ,&nbsp;Pandiyan Praveen ,&nbsp;Karuppaiah Selvakumar ,&nbsp;Chandra Prasad Khatiwada","doi":"10.1016/j.jtice.2024.105856","DOIUrl":"10.1016/j.jtice.2024.105856","url":null,"abstract":"<div><h3>Background</h3><div>One effective strategy and popular topic to preserve ecosystems and prevent water contamination is the direct use of green solar energy to transform organic contaminants in industrial effluent into hazardous substances. Treatment of waste from pharmaceuticals is challenging due to its complexity and wide range of pollutants.</div></div><div><h3>Methods</h3><div>This study used a unique hydrothermal method to create a Bi₂MoO₆-Sr₂Nb₂O₇ nanocatalyst. The photodegradation of Ciprofloxacin (CIP) in the presence of visible light was used to examine the photocatalytic performance of these materials. The obtained bare, composite photocatalysts were extensively characterized using a variety of physicochemical approaches. The structural and phase characteristics of the Bi₂MoO₆-Sr₂Nb₂O₇nanohybrids were identified by XRD and FT-IR spectra. The binding and distribution of the produced catalyst's rod- and plate-like structure were visible in FESEM and HR-TEM images. The presence of Bi₂MoO₆ decreased the composite's optical absorbance and bandgap energy, which was examined using UV-DRS spectroscopy. The band gap value is reduced and shifted to the visible area by adding Bi₂MoO₆.</div></div><div><h3>Significant Findings</h3><div>The photodegradation of CIP, the Bi₂MoO₆-Sr₂Nb₂O₇ catalyst demonstrated better photocatalytic activity; 96.3% of CIP was broken down under visible light. The Photoluminescence (PL) and transient photocurrent tests support the Bi₂MoO₆-Sr₂Nb₂O₇ catalyst's improved photo-induced charge separation efficiency. According to the results of the scavenger test, h⁺ and •O₂ were the key factors in the CIP degradation. Additionally, the Bi₂MoO₆-Sr₂Nb₂O₇ catalyst showed exceptional reusability and durability in four sequential cycles. The Bi₂MoO₆-Sr₂Nb₂O₇nanohybrids are expected to be used as photocatalysts for restoring the environment and converting light energy. This study presents an innovative method for creating a potent photocatalyst for pollutant degradation.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"167 ","pages":"Article 105856"},"PeriodicalIF":5.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131321","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}