Journal of the Taiwan Institute of Chemical Engineers最新文献

{"title":"Corrosion inhibition of cold rolled steel in phosphoric acid solution using Camellia oleifera shell extracts and iodide ions","authors":"Zonghui Jiang ,&nbsp;Shuduan Deng ,&nbsp;Xianghong Li","doi":"10.1016/j.jtice.2025.106574","DOIUrl":"10.1016/j.jtice.2025.106574","url":null,"abstract":"<div><h3>Background</h3><div>Plant-based inhibitors have received much attention as environmentally friendly inhibitors for steel. However, most plant-based inhibitors are usually less effective than conventional organic inhibitors. Therefore, plant-based inhibitors require being mixed with another compound to enhance inhibition effect. In this study, <em>Camellia oleifera</em> shell extracts (COSE) was obtained by reflux extraction. Inhibition properties of COSE and potassium iodide (KI) on cold-rolled steel (CRS) in H₃PO₄ were systematically investigated with aim of expanding practical utilization of <em>Camellia oleifera</em> shell waste.</div></div><div><h3>Methods</h3><div>Inhibition properties of COSE before and after compounding with KI were investigated using weight loss method, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), contact angle, X-ray photoelectron spectroscopy (XPS), confocal laser scanning microscopy (CLSM) and atomic force microscopy (AFM). Adsorption behavior of COSE and COSE/KI at metal/solution interface was investigated by isothermal adsorption model. Finally, functional group information and main components of COSE were analyzed by Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV–<em>vis</em>).</div></div><div><h3>Significant findings</h3><div>Green corrosion inhibitor composed of COSE and synergistic iodide ions (I⁻) was examined for phosphoric acid (H₃PO₄). Weight loss and electrochemical tests revealed that the combined COSE/KI system achieved a maximum inhibition efficiency of 97.84 %, outperforming COSE alone. Adsorption studies confirmed that COSE and COSE/KI follow Langmuir isotherm on CRS surface, indicating strong adsorption driven by COSE’s displacement of water molecules. The <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msubsup><mi>G</mi><mrow><mtext>ads</mtext></mrow><mn>0</mn></msubsup></mrow></math></span> for COSE and COSE/KI were -20.83 and -30.44 kJ mol⁻¹, respectively. Electrochemical analysis demonstrated effective anodic and cathodic inhibition by COSE/KI, while surface characterization validated the formation of a synergistic adsorption film. FTIR analysis showed that COSE contains many unsaturated organic compounds with polar functional groups.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"182 ","pages":"Article 106574"},"PeriodicalIF":6.3,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145735965","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":"Multi-function passivation of amino acid at the interface of perovskite and electron transport layer for n-i-p perovskite solar cells","authors":"Bo-Tau Liu ,&nbsp;Yu-Fen Chen ,&nbsp;Yu-Tang Hong ,&nbsp;Rong-Ho Lee ,&nbsp;Balamurugan Rathinam ,&nbsp;Shu-Chi Huang ,&nbsp;Shoaib Siddique","doi":"10.1016/j.jtice.2025.106571","DOIUrl":"10.1016/j.jtice.2025.106571","url":null,"abstract":"<div><h3>Background</h3><div>Formamidinium lead triiodide (FAPbI₃) is a promising absorber in perovskite solar cells (PSCs) due to its narrow bandgap and thermal stability, but its α-phase easily converts to the non-perovskite δ-phase under ambient conditions. While inverted PSCs have recently achieved higher efficiencies, interfacial passivation at the electron transport layer (ETL)/perovskite interface in conventional devices remains underexplored.</div></div><div><h3>Methods</h3><div>4-Aminobenzoic acid (4ABA) was employed as an interfacial passivation agent between the ETL and the FAPbI₃ perovskite layer, and its passivation mechanism as well as its influence on FAPbI₃ growth and phase transformation were systematically investigated.</div></div><div><h3>Significant findings</h3><div>4ABA incorporation improved film morphology with larger grains, uniform surface, and higher crystallinity. Devices showed reduced trap density, enhanced charge transfer, stronger recombination resistance, stress release, and better stability. The 4ABA-modified device achieved a 14.4 % higher PCE than the control, attributed to its chelation of Pb²⁺/I⁻ defects and conjugated structure that promotes crystal growth and electron extraction.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"182 ","pages":"Article 106571"},"PeriodicalIF":6.3,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145735968","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":"Dehydroxylation of serpentine during roasting pretreatment: Non-isothermal kinetics, phase transformation, and microstructural evolution","authors":"Zhe Bai ,&nbsp;Qinglong Fan ,&nbsp;Mingxing Wang ,&nbsp;Shuai Yuan ,&nbsp;Yanjun Li ,&nbsp;Yuexin Han","doi":"10.1016/j.jtice.2025.106572","DOIUrl":"10.1016/j.jtice.2025.106572","url":null,"abstract":"<div><h3>Background</h3><div>Serpentine serves as the primary nickel bearing mineral in saprolitic laterite nickel ores. The predominant processing technology currently employed is the Rotary Kiln-Electric Furnace (RKEF) process. The serpentine lattice contains a substantial amount of structural hydroxyl groups. The removal of these hydroxyl groups during the RKEF process is essential; however, in-depth research on this specific process is lacking.</div></div><div><h3>Method</h3><div>This study employed seven non-isothermal kinetic models to simulate the dehydroxylation process of pure serpentine minerals. Using analytical techniques including XRD, FTIR, and SEM-EDS, it investigated the phase transformations and microstructural evolution of pure serpentine minerals during roasting.</div></div><div><h3>Significant findings</h3><div>This study determined the non-isothermal kinetics for the dehydroxylation of pure serpentine mineral. The dehydroxylation process of serpentine can be divided into two distinct stages. In the first stage (reaction fraction α = 0.2–0.5), the most appropriate mechanistic function was identified as g(α)=1-(2/3)α-(1-α)^2/3. In the second stage (α = 0.5–0.8), the optimal mechanistic function was determined to be g(α)=[1-(1-α)^1/3]². With increasing temperature, cracks and pores developed on the mineral surface. At 700 °C, the roasted product attained its maximum specific surface area, with forsterite identified as the predominant phase. Upon further temperature increase, the specific surface area decreased, accompanied by the formation of enstatite, which is undesirable for subsequent reduction reactions.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"182 ","pages":"Article 106572"},"PeriodicalIF":6.3,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145735497","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":"Heat-integrated reactive-extractive distillation with internally integrated preconcentration for energy-efficient separation of multi-azeotropic mixture","authors":"Tianshuo Zheng ,&nbsp;Qiuyu Wang ,&nbsp;Bo Zhang ,&nbsp;Jiaxing Zhu","doi":"10.1016/j.jtice.2025.106575","DOIUrl":"10.1016/j.jtice.2025.106575","url":null,"abstract":"<div><div>Background: Efficient treatment of multi-azeotropic mixtures such as tetrahydrofuran (THF)/methanol (MeOH)/methyl acetate (MeAc) remains a critical challenge. Reactive-extractive distillation (RED) has recently been developed for separating MeOH/MeAc-containing multi-azeotropes, while exhibiting high energy demands for THF-rich feeds.</div><div>Methods: Using THF/MeOH/MeAc as a case study, this study proposes a novel intensified separation strategy for MeOH/MeAc-containing multi-azeotropic systems via combining RED, preconcentration, and heat integration (HI). Two baseline processes, three-column reactive-extractive distillation (TCRED) and extractive-reactive distillation (TCERD) are initially developed. By integrating preconcentration columns (IDC) in extractive and solvent recovery sections, TCRED-IDC and TCERD-IDC configurations are respectively proposed. Subsequently, process optimizations are conducted, followed by HI implementation, yielding the final HITCRED-IDC and HITCERD-IDC as process intensification configurations. Finally, key performance evaluation is used to highlight the proposed RED processes.</div><div>Significant finding: HITCRED-IDC and HITCERD-IDC demonstrates superior performance over the corresponding baseline processes, achieving 15.9 % and 27.6 % TAC reductions, 28.4 % and 57.8 % exergy efficiency improvements, and 16.5 % and 25.6 % CO₂ emission reductions. Additionally, all proposed configurations outperform recently reported four-column extractive distillation, with 27.4 %–54.5 % TAC reductions, 22.1 %–55.7 % CO₂ emission reductions, and 295 %–753 % exergy efficiency improvement. This work successfully integrates IDC and HI within RED systems for energy-efficient processing of MeOH/MeAc-containing azeotropic mixtures.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"182 ","pages":"Article 106575"},"PeriodicalIF":6.3,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736013","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":"Hollow MoS2 nanosphere-decorated halloysite nanotubes for enhanced water-based lubrication","authors":"Si-yu Ren ,&nbsp;Xiang-li Wen ,&nbsp;Zhi-lin Cheng","doi":"10.1016/j.jtice.2025.106566","DOIUrl":"10.1016/j.jtice.2025.106566","url":null,"abstract":"<div><h3>Background</h3><div>Despite their superior mechanical properties(wear resistance, heat dissipation, etc.) and environmental friendliness, water-based lubricants have garnered significant attention. However, their low lubricity and weak load-bearing capacity limited their use in many industrial applications. Herein, the hollow nanosphere MoS₂ was successfully fabricated on the surface of HNTs by soft-template method, and the resulting hollow nanosphere-MoS₂/HNTs manifested a cauliflower-like stacked structure and preferable improvement ability of friction and wear resistance.</div></div><div><h3>Methods</h3><div>The structure and composition of HNS-MoS₂/HNTs were determined by a series of characterizations, such as <strong>X-ray diffraction(</strong>XRD), Fourier transform infrared(FTIR),Raman spectra,<strong>Energy dispersive X-ray spectroscopy(</strong>EDS),<strong>Scanning electron microscope(</strong>SEM) and <strong>Transmission electron microscope(</strong>TEM). The dispersibility of hollow nanosphere-MoS₂/HNTs in water was implemented by placing different days and water contact angles. Friction performance of hollow nanosphere-MoS₂/HNTs as nanoadditive was tested on an MMW-1 four-ball tester. Morphology and surface roughness of wear track were evaluated via 3D profilometry system and optical micrograph. Worn surface analysis was detected by X-ray Photoelectron Spectroscopy(XPS).</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"182 ","pages":"Article 106566"},"PeriodicalIF":6.3,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736014","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":"Bifunctional acidic carbon catalyst from dragon fruit peel for selective glucose conversion into 5-hydroxymethylfurfural","authors":"Thinh An Tan Le ,&nbsp;Vinh Thanh Chau Doan ,&nbsp;Phuong Hoang Tran","doi":"10.1016/j.jtice.2025.106568","DOIUrl":"10.1016/j.jtice.2025.106568","url":null,"abstract":"<div><h3>Background</h3><div>This study aims to develop a low-cost, eco-friendly carbon-based catalyst for the conversion of glucose into 5-hydroxymethylfurfural (HMF), a valuable biomass-derived platform chemical. The research addresses the need for efficient catalytic systems combining both Brønsted and Lewis acid functionalities.</div></div><div><h3>Methods</h3><div>Three novel bifunctional carbon catalysts (Al/C-SO₃H<img>Cl-Y) were synthesized from dragon fruit peel <em>via</em> a hydrothermal process, incorporating –SO₃H groups and then AlCl₃ to provide Brønsted and Lewis acid sites, respectively. The catalysts were characterized using FTIR, SEM-EDX elemental mapping, TGA, NH₃-TPD, Raman, and XRD analyses. Reaction parameters, including catalyst type, substrate type, solvent, catalyst loading, substrate concentration, temperature, and the role of Lewis acid sites, were systematically investigated. A leaching test and a scale-up experiment were also conducted to assess catalyst stability and practical applicability.</div></div><div><h3>Significant findings</h3><div>Optimal conditions for HMF production were achieved using 50 mg of Al/C-SO₃H<img>Cl-2 catalyst in dimethyl sulfoxide (DMSO) at 140 °C for 16 h, yielding 89% HMF. The catalyst demonstrated high efficiency, stability, and potential for scale-up. A catalytic mechanism was proposed based on experimental data, and the results compared favorably with previous studies, confirming the effectiveness of Al/C-SO₃H<img>Cl-2 as a sustainable catalyst.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"182 ","pages":"Article 106568"},"PeriodicalIF":6.3,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145735969","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":"Zn4B6O33/reduced graphene oxide nano architectures for integrated water-splitting and urea-assisted hydrogen production via synergistic bifunctional electrocatalysis","authors":"Bodicherla Naresh ,&nbsp;T.V.M. Sreekanth ,&nbsp;Chandra Reddy Niragatti Suma ,&nbsp;Kisoo Yoo ,&nbsp;Jonghoon Kim","doi":"10.1016/j.jtice.2025.106544","DOIUrl":"10.1016/j.jtice.2025.106544","url":null,"abstract":"<div><h3>Background</h3><div>Efficient and sustainable hydrogen production is a critical challenge in renewable energy technologies. Coupling water-splitting with urea oxidation provides a low-energy pathway for hydrogen generation, but conventional catalysts often suffer from limited activity and stability. Developing bifunctional electrocatalysts capable of driving both reactions efficiently is therefore essential for practical hydrogen production.</div></div><div><h3>Methods</h3><div>A Zn₄B₆O₁₃/reduced graphene oxide (rGO) composite was synthesized via solid-state reaction followed by hydrothermal integration. The incorporation of rGO enhanced surface roughness, crystallinity, and charge-transfer kinetics, as confirmed by SEM, TEM, Raman, XRD, and Rietveld refinement. Electrochemical performance was evaluated using linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and electrochemical surface area (ECSA) measurements.</div></div><div><h3>Significant findings</h3><div>The Zn₄B₆O₁₃/rGO composite exhibited superior bifunctional electrocatalytic activity with reduced overpotentials of 327 mV for the oxygen evolution reaction (OER) and 170 mV for the urea oxidation reaction (UOR), and Tafel slopes of 95.1 mV dec⁻¹ (OER) and 55.8 mV dec⁻¹ (UOR). The ECSA increased from 80 to 110 cm² (OER) and from 97.5 to 125 cm² (UOR), indicating more active sites. Long-term chronoamperometry over 25 h demonstrated excellent durability, while EIS confirmed improved charge-transfer behavior. These results highlight the strong synergistic interaction between Zn₄B₆O₁₃ and rGO, positioning the composite as a cost-effective, durable, and practical catalyst for integrated water-splitting and urea-assisted hydrogen production<strong>.</strong></div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106544"},"PeriodicalIF":6.3,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733208","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":"Unraveling the role of oxygen species in Pt/MnO2 catalysts for low-temperature HCHO abatement: A precursor-dependent study","authors":"Wei Tong ,&nbsp;Jie Yang ,&nbsp;Yaxiong Ji ,&nbsp;Hongli Wu","doi":"10.1016/j.jtice.2025.106541","DOIUrl":"10.1016/j.jtice.2025.106541","url":null,"abstract":"<div><h3>Backgrounds</h3><div>Formaldehyde (HCHO) is a hazardous indoor pollutant requiring efficient low-temperature abatement. Catalytic oxidation effectiveness hinges on active oxygen species generation.</div></div><div><h3>Methods</h3><div>Pt/δ-MnO₂ catalysts were synthesized using five manganese precursors (acetate, sulfate, carbonate, chloride, nitrate) via impregnation-reduction. Catalytic performance was assessed for HCHO oxidation (200–460 ppm, 80,000 mL/(g·h)), with mechanisms probed via in situ DRIFTS, DFT, XPS, EPR, Raman, H₂-TPR, SEM, TEM and N₂ adsorption-desorption.</div></div><div><h3>Significant findings</h3><div>Pt/MnO₂-S (sulfate-derived) achieved 100 % HCHO conversion at 50 °C (200 ppm, 80,000 mL/(g·h)), outperforming other precursors due to its abundant oxygen vacancies (EPR/XPS) and high metallic Pt° content (55 %, XPS). In situ DRIFTS and DFT calculations revealed that Pt nanoparticles and oxygen vacancies synergistically generate active oxygen species, enabling a dual-path \"butterfly mechanism\": Under O₂-rich conditions, surface radicals (O, OH) dominate oxidation to CO₂/H₂O; in O₂-deficient environments, lattice oxygen participates, accumulating formate intermediates. Pt/MnO₂-S exhibited exceptional stability (100 % conversion at 460 ppm for &gt;4 h) and recyclability. The work establishes oxygen vacancy engineering as critical for enhancing Pt-MnO₂ interfacial reactivity.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106541"},"PeriodicalIF":6.3,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733206","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":"Effect of transition metals (Co, Ni, Fe) on methanol selective catalytic oxidation performance of CeMOy mixed oxide catalysts","authors":"Junhao Jing ,&nbsp;Zhitao Han ,&nbsp;Liangzheng Lin ,&nbsp;Sihan Yin ,&nbsp;Tingjun Liu ,&nbsp;Chuanqiu Gao ,&nbsp;You Tian ,&nbsp;Dong Ma","doi":"10.1016/j.jtice.2025.106565","DOIUrl":"10.1016/j.jtice.2025.106565","url":null,"abstract":"<div><h3>Background</h3><div>Methanol selective catalytic oxidation (CH₃OH-SCO) is an effective technology for CH₃OH removal. However, the development of catalysts with excellent stability, cost-effectiveness, and high activity at low temperatures remains a major challenge in reducing unburned methanol emissions from methanol-fueled engines.</div></div><div><h3>Methods</h3><div>In this study, CeMO<em>_y</em> (<em>M</em> = Co, Ni, Fe) mixed oxide catalysts were synthesized via the sol-gel method and characterized by XRD, XPS, EPR, H₂-TPR, O₂-TPD, CO₂-TPD, and in-situ DRIFTS to investigate the influence of transition metals on CH₃OH-SCO performance.</div></div><div><h3>Significant findings</h3><div>Catalytic activity tests demonstrated that the CeCoO<em>_y</em> catalyst exhibited the best performance, achieving 90 % methanol conversion at 173 °C and maintaining complete conversion without detectable byproducts over a broad temperature range (200–450 °C). Furthermore, the CeCoO<em>_y</em> catalyst showed excellent stability and sulfur resistance. Characterization analyses revealed that its superior catalytic performance was attributed to the enhanced interfacial effect between CeO₂ and Co₃O₄. In-situ DRIFTS analysis confirmed that methanol oxidation followed the Mars-van Krevelen (MvK) mechanism. This study clarified the role of different transition metals in modulating oxygen vacancies, oxygen species, and basic sites in CeMO<em>_y</em> catalysts, providing guidance for the design of efficient and low-cost mixed oxide catalysts.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"181 ","pages":"Article 106565"},"PeriodicalIF":6.3,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733207","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":"Alkali modification and nitrogen doping synergistically regulate sludge-derived biochar for persulfate activation and organic pollutant degradation","authors":"Yujie Zhang,&nbsp;Shoulong Peng,&nbsp;Siyu Zhang,&nbsp;Jiani Li","doi":"10.1016/j.jtice.2025.106569","DOIUrl":"10.1016/j.jtice.2025.106569","url":null,"abstract":"<div><div>Given the increasing organic pollution in industrial wastewater and the disposal risks of municipal sludge, developing advanced oxidation technology based on sludge-derived biochar-activated peroxymonosulfate (PMS) is highly promising. In this study, a series of sludge-derived biochars (SSB) were prepared via alkali modification and nitrogen doping, and their performance and mechanism in activating PMS for the degradation of organic pollutants were systematically investigated. After alkali modification, the surface of biochar becomes much rougher, and meanwhile the functional group C=O appears. After urea doping, the biochar exhibits a more porous characteristic, and the increased nitrogen species can enhance the electron transfer ability. Experimental results demonstrated that the 0.5-SSB-3/PMS reaction system could rapidly oxidize and degrade multiple organic pollutants. Characterization via SEM and BET revealed that the modified biochar has a rough surface and a relatively distinct pore structure, while both its pore size and pore volume are increased. Mechanistic investigations revealed that non-radical singlet oxygen (¹O₂) served as the dominant reactive species. On the one hand, it is generated by the self-decomposition of PMS; on the other hand, it is generated by the activation of PMS by special structures such as C=O, pyridinic N, and graphitic N. The catalyst maintained high efficiency across a wide pH range (3–9), and the 0.5-SSB-3/PMS system still achieved 90.7% pollutant degradation after five reuse cycles. This study provides valuable insights into the resource utilization of sludge and the degradation of organic pollutants.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"182 ","pages":"Article 106569"},"PeriodicalIF":6.3,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145697412","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}