Journal of the Taiwan Institute of Chemical Engineers最新文献

{"title":"A novel knowledge-driven intuitionistic fuzzy multi-criteria decision-making method for evaluating the operating condition of the aluminum electrolysis cell","authors":"Yishun Liu ,&nbsp;Dengxuan Tang ,&nbsp;Zhaoke Huang ,&nbsp;Zhijie Wang","doi":"10.1016/j.jtice.2025.106256","DOIUrl":"10.1016/j.jtice.2025.106256","url":null,"abstract":"<div><h3>Background:</h3><div>Accurate evaluation of aluminum electrolysis cell operating conditions is essential for maintaining safe and stable production processes. However, the limited number of manually annotated operating condition labels, derived from various process indicators, hinders the effectiveness of prediction models across diverse datasets of aluminum electrolysis cells.</div></div><div><h3>Method:</h3><div>This study proposes a novel knowledge-driven intuitionistic fuzzy multicriteria decision-making (MCDM) method, which utilizes expert-defined aluminum electrolysis cell operating standards to evaluate operating conditions without dependence on labels. By leveraging expert-defined operating standards for aluminum electrolysis cells, unified decision matrices that integrate process indicators with these predefined standards are constructed. To determine optimal indicator weights, Intuitionistic Multiplicative Preference Relations (IMPRs) with the Criteria Importance Through Inter-criteria Correlation (CRITIC) method are combined together, effectively balancing subjective expert knowledge and objective data-driven insights. Finally, the fuzzy Elimination and Choice Translating Reality (ELECTRE) II method is utilized to create comprehensive ranking relationships between operating standards and process data, thereby improving the accuracy and reliability of operating condition evaluations.</div></div><div><h3>Significant findings:</h3><div>Case studies validate the effectiveness of the proposed method in evaluating operating conditions.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106256"},"PeriodicalIF":5.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581246","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":"Adaptive spatiotemporal neighborhood feature learning based on manifold regularization autoencoder for industrial process monitoring","authors":"Xu Yang ,&nbsp;Zizhuo Liu ,&nbsp;Jian Huang ,&nbsp;Kaixiang Peng","doi":"10.1016/j.jtice.2025.106235","DOIUrl":"10.1016/j.jtice.2025.106235","url":null,"abstract":"<div><h3>Background:</h3><div>Process monitoring systems are crucial for process safety in modern industries. However, existing methods typically extract spatial features from the data without considering the dynamic spatiotemporal information inherent in industrial process data, which affects the accuracy of monitoring.</div></div><div><h3>Method:</h3><div>This paper proposes an Adaptive Spatiotemporal Manifold Regularization Autoencoder (ASMRAE) for process monitoring which aims to extract features while preserving the spatiotemporal neighborhood structure. Specifically, an adaptive temporal neighborhood weight calculation method is designed to adjust the spatial structure within the temporal neighborhood, adapting to changing temporal information. The spatiotemporal neighborhood topology is described probabilistically to accommodate the uncertainty inherent in industrial process data. By minimizing the probability distribution of the spatiotemporal neighborhood structure between the raw data and the extracted features, the resulting features capture spatiotemporal information. Finally, <span><math><msup><mrow><mi>T</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> and SPE statistics are constructed for monitoring purposes.</div></div><div><h3>Significant Findings:</h3><div>The experimental results show that capturing accurate spatiotemporal structures can enhance monitoring performance. The effectiveness of the proposed method is validated in the Vinyl Acetate Monomer process and Aluminum electrolysis process.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106235"},"PeriodicalIF":5.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522382","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":"Mixed electrolyte additive with adsorption–desorption properties in aluminum–air batteries","authors":"Tingting Zhang ,&nbsp;Guangshe Zhu ,&nbsp;Zhenyu Chen","doi":"10.1016/j.jtice.2025.106268","DOIUrl":"10.1016/j.jtice.2025.106268","url":null,"abstract":"<div><h3>Background</h3><div>Although traditional electrolyte additives promise high-efficiency corrosion protection and safety, existing static additive adsorption films typically suffer from inferior electron and ion transport. Here, we report a mixed electrolyte additive with adsorption–desorption properties in aluminum–air batteries. We examine hexadecyl trimethyl ammonium bromide (CTAB) and glycerol (Gly) as mixed additives to prevent aluminum anode corrosion in alkaline solutions.</div></div><div><h3>Methods</h3><div>Hydrogen evolution test, electrochemical measurements, morphological analysis, and molecular simulation are used to explore the corrosion inhibition and desorption mechanisms.</div></div><div><h3>Significant findings</h3><div>An efficiency of up to 75.81% can be achieved in corrosion inhibition. The additives can also be desorbed from the aluminum anode surface during discharge. The optimum anode utilization rate, capacity density, and energy density can increase to 61.91%, 1843.31 mA•h•g⁻¹, and 2183.59 W•h•g⁻¹, respective -ly.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106268"},"PeriodicalIF":5.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522383","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":"Rewiring carbonic anhydrase isoforms for adaptive carbon dioxide capture in Chlamydomonas reinhardtii CC400","authors":"Yen-Tung Chen ,&nbsp;Sefli Sri Wahyu Effendi ,&nbsp;Priskila A. Diankristanti ,&nbsp;Jih-Heng Chen ,&nbsp;Fang-Hsien Wu ,&nbsp;Bow-Hong Yeh ,&nbsp;Guan Bang Chen ,&nbsp;Chuan-Wen Chou ,&nbsp;I-Son Ng","doi":"10.1016/j.jtice.2025.106258","DOIUrl":"10.1016/j.jtice.2025.106258","url":null,"abstract":"<div><h3>Background</h3><div>Rising CO₂ emissions from fossil fuel combustion are a major driver of climate change, necessitating more sustainable mitigation strategies to reduce atmospheric carbon release. Microalgae offer a viable solution for carbon capture, storage, and utilization (CCUS) due to their photosynthetic ability, efficiently converting CO₂ into biomass.</div></div><div><h3>Methods</h3><div>The carbon capture capability of <em>Chlamydomonas reinhardtii</em> CC400 was engineered by overexpressing carbonic anhydrase (CA) genes from endogenous mitochondrial CAH4 and a transgenic <em>Sulfurihydrogenibium yellowstonense</em> CA (CHJS). Enzymatic and transcriptional analyses were conducted to investigate the role of genetic CA in carbon regulation and rearrangement. The effects of CAH4 and CHJS were evaluated through biomass, protein, starch, and lipid production, along with CO₂ capture efficiency across varying levels to assess strain-specific carbon assimilation trends.</div></div><div><h3>Significant findings</h3><div>Overexpressing intrinsic and extrinsic CAs effectively minimized Rubisco maintenance while promoting biomass accumulation. Notably, both genetic strains displayed distinct metabolic preferences, with starch production reaching 0.64 g/L under mixotrophic conditions in TAP medium. Protein accumulation peaked at 0.38 g/L under autotrophic cultivation in mBG11 medium, highlighting their efficiency in condition-dependent carbon utilization. The modified strains outperformed wild-type CC400 in carbon uptake, with CAH4 achieving a 50 % efficiency increase under direct air capture conditions (0.04 % CO₂). In contrast, CHJS exhibited a moderate enhancement of 10 % and 15 % at CO₂ levels of 1 % and 2 %, respectively. These findings underscore the diverse potential of distinct CAs in modulating carbon flux, optimizing metabolic pathways, and improving carbon fixation under dynamic CO₂ conditions.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106258"},"PeriodicalIF":5.5,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514354","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":"High-performance phosphogypsum slag cement based on anhydrous phosphogypsum: mechanical enhancement and environmental assessment","authors":"Yonghui Zhao ,&nbsp;Xuhong Zhou ,&nbsp;Qishi Zhou ,&nbsp;Hanmou Yu ,&nbsp;Wenxuan Guo ,&nbsp;Haodi Chen","doi":"10.1016/j.jtice.2025.106259","DOIUrl":"10.1016/j.jtice.2025.106259","url":null,"abstract":"<div><div>To address the challenge of low phosphogypsum (PG) utilization in phosphogypsum slag cement (PSC) due to impurity-related performance issues, this study introduces a novel approach by incorporating calcined anhydrous phosphogypsum (APG) to develop a high-APG-content PSC system. The innovation lies in leveraging a synergistic activation mechanism using calcium carbide residue (CCR) and ground blast furnace slag (GBFS) to enhance the low reactivity and environmental friendliness of APG. The hydration process, microstructure, and pore structure were analyzed by Hydration heat, X-ray diffraction (XRD), Fourier transform infrared spectrum (FTIR), thermogravimetry (TG), scanning electron microscope (SEM), and mercury intrusion porosimeter (MIP), and the environmental behavior was evaluated. Results showed that: An optimized mix proportion (58 % APG, 40 % GBFS, 2 % CCR) that achieved high APG incorporation (58 %) while providing excellent mechanical and water resistance, with 28-day compressive strength of 76.50 MPa, 1.71 % water absorption, and a 0.93 softening coefficient; CCR-induced alkalinity promoted GBFS dissociation, generating abundant C-S-H gel and ettringite to refine pore structure and densify the matrix, significantly improving water resistance; Adding 1 %-2 % CCR increased the alkalinity of the system, which was beneficial for hydration reaction. Improving the pH value of PSC effectively increases the leaching risk of heavy metals and phosphorus. Moreover, the carbon emissions of PSC were &lt;1/7 of ordinary Portland cement. The research results can enrich the PSC system and improve the utilization rate of solid waste.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106259"},"PeriodicalIF":5.5,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514355","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":"Chan−Lam cross-coupling between boronic acids and sulfonyl azides mediated by the combination of heterogeneous catalyst Cu-USY and NaBH4","authors":"Cheng-Kai Zhao ,&nbsp;Rui Bai ,&nbsp;Xu-Juan Liu ,&nbsp;Wen-Yu Luo ,&nbsp;Shanshan Liu ,&nbsp;Zhuo Li ,&nbsp;Xiao-Xun Ma ,&nbsp;Lin-Yu Jiao","doi":"10.1016/j.jtice.2025.106255","DOIUrl":"10.1016/j.jtice.2025.106255","url":null,"abstract":"<div><h3>Background</h3><div>The Chan-Lam cross-coupling reaction represents one of the most versatile and promising methods for <em>C</em> − <em>N</em> bond construction in chemistry. However, designing effective and stable catalysts remains challenging.</div></div><div><h3>Method</h3><div>Cu-USY was prepared from ultra-stable Y (USY) zeolite as the framework and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS). thermogravimetric analysis (TGA) etc. The catalytic performance was investigated through the reaction of phenylboronic acids and sulfonyl azides in the absence of ligand, with products characterized by NMR. Mechanistic studies was conducted accordingly.</div></div><div><h3>Significant findings</h3><div>It has been proved that Cu was well immobilized on the surface and internal cages of USY to enhance the selectively, and in this case, the homocoupling of boronic acids was greatly suppressed. The experimental observations and mechanistic studies indicated that NaBH₄ played dual roles as both base to promote the N₂ release/nitrene formation and reductant to regenerate Cu(I) species <em>in situ</em>. Notably, our method exhibits broad functional groups tolerance, demonstrating good potential in organic synthesis and molecular modification. This work provides an alternative strategy for the synthesis of high performance and recyclable heterogeneous Cu catalyst with good potential practicalities during the <em>C</em> − <em>N</em> bond formation.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106255"},"PeriodicalIF":5.5,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501154","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, one-pot multicomponent synthesis of 1,4-dihydropyridines, benzylidene malononitriles and tetrahydrobenzo[b]pyrans using copper nanoparticles: Exploration of green chemistry metrics and antioxidant potential","authors":"Varun Aggarwal ,&nbsp;Ankit Kachore ,&nbsp;Ekta Bala ,&nbsp;Hemant Singh ,&nbsp;Manickam Selvaraj ,&nbsp;Mohammed A. Assiri ,&nbsp;Saima ,&nbsp;Rakesh Kumar ,&nbsp;Rohit Sharma ,&nbsp;Praveen Kumar Verma","doi":"10.1016/j.jtice.2025.106249","DOIUrl":"10.1016/j.jtice.2025.106249","url":null,"abstract":"<div><h3>Background</h3><div>Development of one-pot sustainable methodologies are of high interest in organic synthesis and medicinal chemistry. Researchers focused their efforts for the development of one-pot multicomponent reactions (MCRs) to access heterocyclic scaffolds utilising novel nanomaterials. Herein, the catalytic performance of biogenic cuprous oxide nanoparticles (BCONPs) was explored in MCRs along with exploration of green chemistry metrics, ensuring sustainable aspects of reactions.</div></div><div><h3>Methods</h3><div>Nanocatalyst was synthesized by green co-precipitation method and characterized by variegated characterization techniques including FT-IR, <em>P</em>-XRD, XPS, TEM, FE-SEM, and EDX; and demonstrated excellent catalytic activity. Developed protocols afforded 1,4-dihydropyridines (1,4-DHPs), benzylidene malononitrile, and tetrahydrobenzo[<em>b</em>]pyran (THBP) derivatives. Various green chemistry metrics such as TON, TOF, AE, AEf, RME, OE, and E-factor for each derivative based on electron withdrawing and donating influence was evaluated which proved efficacy, sustainability, and scalability of the processes. Also, EcoScale score was calculated for each developed protocol. In addition, in vitro and <em>in silico</em> antioxidant potential of all compounds was explored.</div></div><div><h3>Significant Findings</h3><div>Developed methods afforded important heterocyclic scaffolds including 1,4-DHPs, and THBPs along with, benzylidene malononitriles in high yields under mild conditions tolerating various functionalities with exploration of green chemistry metrics. An EcoScale score above 75 % was achieved for each protocol. These BCONPs were applicable for gram scale synthesis and recyclable up to five times, sustaining catalytic function. 1,4-DHPs especially with electron donating functionalities showed excellent antioxidant activity.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106249"},"PeriodicalIF":5.5,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490320","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-depth study of the adsorption mechanism of two synthesized triazole-pyrazole derivatives for corrosion inhibition of steel in 1M HCl: Electrochemical, XPS and computational approaches","authors":"N. Setti ,&nbsp;A. Barrahi ,&nbsp;Y. Draoui ,&nbsp;Abhinay Thakur ,&nbsp;M. Maatallah ,&nbsp;M. El Faydy ,&nbsp;M. El Massoudi ,&nbsp;S. Radi ,&nbsp;B. Dikici ,&nbsp;Hatem A. Abuelizz ,&nbsp;A. Zarrouk ,&nbsp;A. Dafali","doi":"10.1016/j.jtice.2025.106244","DOIUrl":"10.1016/j.jtice.2025.106244","url":null,"abstract":"<div><h3>Background</h3><div>This work examined two newly synthesized triazole-pyrazole hybrids, 3-(3,5-dimethyl-1H-pyrazol-1-yl)-1H-1,2,4-triazole (<em>TzPz1</em>) and 3-(3,5-dimethyl-1H-pyrazol-1-yl)-1-methyl-1H-1,2,4-triazole (<em>TzPz2</em>), as prospective corrosion inhibitors for carbon steel in 1 M HCl.</div></div><div><h3>Methods</h3><div>The inhibitory efficacy of <em>TzPz1</em> and <em>TzPz2</em> was evaluated by PDP and EIS to examine their electrochemical properties. The surface morphology and elemental composition were analyzed using SEM/EDX, while XPS and UV-visible spectroscopy were employed to investigate their chemical interactions with the steel surface. The adsorption behavior was assessed using the Langmuir isotherm, while theoretical investigations (DFT and MDS) elucidated the molecular-level adsorption process.</div></div><div><h3>Significant findings</h3><div>The study demonstrated that <em>TzPz1</em> and <em>TzPz2</em> display concentration-dependent inhibition, with <em>TzPz2</em> (95.2%) proving more efficacious than <em>TzPz1</em> (92.6%) at 303 K and 10⁻³ M, as ascertained by PDP measurements. Both function as mixed-type inhibitors, adhering to the Langmuir isotherm and generating a chemisorbed protective layer, as shown by XPS and SEM-EDX analyses. DFT and MDS computations corroborated these findings, emphasizing robust interactions with the steel surface, consistent with experimental data.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489619","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":"Analysis of the impact of organic manure in techno-efficient production of renewable energy from food waste","authors":"N Prem Sankar ,&nbsp;Anita Christaline Johnvictor","doi":"10.1016/j.jtice.2025.106242","DOIUrl":"10.1016/j.jtice.2025.106242","url":null,"abstract":"<div><h3>Background</h3><div>Owing to the increased consumer demand for clean energy, different ideas and methods are being adopted to increase the generation of energy from renewable resources. The current energy crisis highlights the global disparities in energy availability and underscores the need for expanding renewable energy sources, enhancing energy efficiency, and developing infrastructure to support universal energy access. This research is implemented with the objective to ascertain the potential of food wastes in a university environment to produce methane gas and subsequent electricity generation.</div></div><div><h3>Methods</h3><div>This implementation includes a mini biogas plant that uses food waste for high production of electricity with a 5 m³ university‑scale anaerobic digester over 12 months to convert daily loads of mixed food waste and cow dung under mesophilic (35 ± 1 °C) and thermophilic (55 ± 1 °C) conditions. Four different feed ratios have been tested.</div></div><div><h3>Significant findings</h3><div>The homogeneous mixed waste (667 kg food waste and 337 kg cow dung) produced the highest amount of methane (180 m³/day) and electricity (600 kW/day). A 12‑month techno‑economic analysis yielded Levelized Cost of Energy (LCOE) of €0.19 kWh⁻¹. These findings define optimal operating parameters for scalable, campus‑based biogas energy systems. This novel, plant‑scale implementation defines clear, scalable parameters for high‑performance campus biogas systems.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106242"},"PeriodicalIF":5.5,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480236","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":"High performance CaAl12O19:Ho3+ phosphors for energy and environmental sustainability: Synergizing photoluminescence, electrochemical energy storage and photocatalysis","authors":"T.N. Megharaj ,&nbsp;B R Radha Krushna ,&nbsp;N. Navya ,&nbsp;S.C. Sharma ,&nbsp;B. Bommalingaiah ,&nbsp;Pusparaj Samantsinghar ,&nbsp;K. Manjunatha ,&nbsp;Sheng Yun Wu ,&nbsp;Shih-Lung Yu ,&nbsp;U. Premkumar ,&nbsp;G. Ramakrishna ,&nbsp;H. Nagabhushana","doi":"10.1016/j.jtice.2025.106238","DOIUrl":"10.1016/j.jtice.2025.106238","url":null,"abstract":"<div><h3>Background</h3><div>A series of un-doped and 1–9 mol % Ho³⁺ doped CaAl₁₂O₁₉ (CAO: Ho³⁺) phosphors are synthesized and characterized to explore their structural, optical, electrochemical, and photocatalytic properties. Understanding these characteristics is crucial for applications in energy storage and environmental remediation.</div></div><div><h3>Methods</h3><div>The synthesized phosphors are analyzed using X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDAX), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) confirmed the elemental composition and oxidation states. Optical properties are evaluated using UV–Vis spectroscopy for bandgap determination, while photoluminescence (PL) analysis identified Ho³⁺ emission peaks. Electrochemical studies assessed the supercapacitor performance, and photocatalytic efficiency is tested through methylene blue (MB) dye degradation under visible light.</div></div><div><h3>Significant Findings</h3><div>The optimal Ho³⁺ concentration for peak photoluminescence is 5 mol %, with higher concentrations causing quenching. CAO:9Ho³⁺ exhibited a high specific capacitance (C_sp) of 792.87 F/g at 5 mV/s, excellent energy density (E_D) 14.126 Wh/kg at 1 A/g and retained 91.95 % capacitance after 5000 cycles. It also showed outstanding photocatalytic activity, degrading 91.79 % of MB dye in 100 min under visible light. These findings highlight its potential for high-performance supercapacitors and environmental applications, paving the way for sustainable innovations in energy storage and wastewater treatment technologies.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"175 ","pages":"Article 106238"},"PeriodicalIF":5.5,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490319","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}