Journal of the Taiwan Institute of Chemical Engineers最新文献_第8页

Unveiling the dual role of a novel azomethine: Corrosion inhibition and antioxidant potency – a multifaceted study integrating experimental and theoretical approaches 揭示新型偶氮甲烷的双重作用：腐蚀抑制和抗氧化功效--一项综合了实验和理论方法的多方面研究

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-21 DOI: 10.1016/j.jtice.2024.105535

Ilhem Kaabi , Samra Amamra , Tahar Douadi , Mousa Al-Noaimi , Nadjib Chafai , Abir Boublia , Malik Albrahim , Noureddine Elboughdiri , Yacine Benguerba

Background

In the pursuit of sustainable corrosion management strategies, this study unveils a novel organic azomethine, 1-[(E)-(1H-1,2,4-Triazol-3-ylimino)methyl]-2-naphthol (SB), as a dual-function corrosion inhibitor and antioxidant for X48 carbon steel in 1 M HCl solution. Distinctive for its environmentally friendly profile, SB represents a pivotal advancement, offering a greener alternative that synergistically addresses corrosion inhibition and oxidative stress.

Methods

The synthesis and characterization of SB were confirmed using UV–Vis, FTIR, NMR, mass spectrometry, TGA, and DSC techniques. Its corrosion inhibition for X48 carbon steel in 1 M HCl was evaluated using gravimetric analysis, EIS, and PDP, analyzing concentration and temperature effects. Surface interactions were examined through SEM, EDX, AFM, UV–Vis, and water contact angle, supported by Langmuir isotherm and thermodynamic assessments. Computational studies explored the inhibitor-surface dynamics, including DFT, NCI, and QTAIM. Antioxidant capacity was assessed with DPPH• scavenging, and molecular docking provided insights into SB's binding and enzyme complex stability.

Significant Findings

SB showcased exceptional corrosion inhibition on X48 carbon steel in 1 M HCl, achieving up to 94.24% efficiency (WL), 90.82% (EIS), and 91.33% (PDP) at a concentration of 5 × 10⁻⁴ M. The process, governed by chemical adsorption and physisorption, aligns with the Langmuir isotherm model. Surface analysis and UV–Vis spectroscopy revealed Fe-SB complex formation, supporting the inhibition mechanism. Computational analyses highlighted SB's interaction at the molecular level, with docking studies revealing its inhibitory potential against targets like xanthine oxidase, NADPH oxidase, Acidithiobacillus ferrooxidans (1H10), and COVID-19. The comparative binding energies suggest SB's superior inhibitory activity towards 1H1O. These findings highlight SB's promising multifunctional properties, positioning it as an environmentally friendly inhibitor for carbon steel corrosion and indicating potential biomedical applications.

背景为了追求可持续的腐蚀管理策略，本研究揭示了一种新型有机偶氮甲烷--1-[(E)-(1H-1,2,4-三唑-3-亚氨基)甲基]-2-萘酚（SB）--在 1 M HCl 溶液中作为 X48 碳钢的双重功能缓蚀剂和抗氧化剂。SB 具有独特的环境友好特性，是一项关键的进步，提供了一种能协同解决缓蚀和氧化应激问题的更环保的替代品。使用重量分析、EIS 和 PDP 评估了 SB 在 1 M HCl 中对 X48 碳钢的腐蚀抑制作用，分析了浓度和温度效应。通过 SEM、EDX、AFM、UV-Vis 和水接触角对表面相互作用进行了研究，并进行了 Langmuir 等温线和热力学评估。计算研究探讨了抑制剂-表面动力学，包括 DFT、NCI 和 QTAIM。在 5 × 10-4 M 的浓度下，SB 在 1 M HCl 中对 X48 碳钢的腐蚀抑制率高达 94.24%（WL）、90.82%（EIS）和 91.33%（PDP）。表面分析和紫外可见光谱显示，Fe-SB 复合物的形成支持了抑制机制。计算分析强调了 SB 在分子水平上的相互作用，对接研究揭示了它对黄嘌呤氧化酶、NADPH 氧化酶、酸性硫杆菌铁氧化物（1H10）和 COVID-19 等靶标的抑制潜力。比较结合能表明，SB 对 1H1O 的抑制活性更强。这些发现凸显了 SB 极具前景的多功能特性，将其定位为一种环境友好型碳钢腐蚀抑制剂，并预示着其潜在的生物医学应用前景。

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引用次数: 0

A newly isolated Klebsiella variicola JYP01 strain with iron-interaction capability for energy-efficient production of 1,3-propanediol 新分离的变异克雷伯氏菌 JYP01 菌株具有铁互作能力，可高效生产 1,3-丙二醇

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-21 DOI: 10.1016/j.jtice.2024.105555

Da Seul Kong , Juyeon Park , Chang Hyeop Lee , Himanshu Khandelwal , Minsoo Kim , Mutyala Sakuntala , Tae-Hoon Kim , Byong-Hun Jeon , Jung Rae Kim , Changman Kim

Background

Glycerol, a by-product of the biodiesel industry, has garnered attention as a substrate for sustainable bioprocessing. This study investigates the metabolic adaptability of a newly isolated strain, Klebsiella variicola JYP01, focusing on glycerol utilization under both aerobic and anaerobic conditions, as well as the potential of this strain as a proficient producer of 1,3-propanediol (PDO) in sustainable bioprocessing. The research explores the potential of K. variicola JYP01 as the efficient PDO producers with the emphasis on the integration of zero-valent iron (ZVI) to enhance energy production and PDO yield.

Methods

Isolation and characterization of the JYP01 strain, assessing its growth and PDO production under both aerobic and anaerobic conditions, and incorporating ZVI (as an electron donor) to identify the metabolic fluxes. Several analyses, including 16S rRNA analysis, high-performance liquid chromatography, and bio-electrochemical system reactors, were employed to elucidate metabolic strategies and the bioconversion efficiency of glycerol to PDO of JYP01 particularly with ZVI.

Significant findings

The integration of ZVI into the bioconversion process significantly enhanced PDO production, leading to 171 % increase from 44.0 mM to 75.2 mM. This demonstrates the distinct ability of the K. variicola JYP01 strain to utilize ZVI as an extra reducing energy in an anaerobic environment. The findings underscore this strain's metabolic capacity, its suitability for glycerol conversion on a large scale, and the novel strategy of using ZVI to elevate PDO production, advancing sustainable bioprocessing techniques.

背景甘油是生物柴油工业的副产品，作为一种可持续生物加工的底物已引起人们的关注。本研究调查了新分离菌株变异克雷伯氏菌（Klebsiella variicola JYP01）的新陈代谢适应性，重点是有氧和厌氧条件下的甘油利用，以及该菌株在可持续生物加工中作为 1,3-丙二醇（PDO）熟练生产者的潜力。方法分离和鉴定 JYP01 菌株，评估其在有氧和厌氧条件下的生长和 PDO 产量，并加入 ZVI（作为电子供体）以确定代谢通量。研究人员采用了 16S rRNA 分析、高效液相色谱法和生物电化学系统反应器等多种分析方法，以阐明 JYP01 的代谢策略和甘油转化为 PDO 的生物转化效率，特别是与 ZVI 的结合。这表明 K. variicola JYP01 菌株具有在厌氧环境中利用 ZVI 作为额外还原能的独特能力。这些发现强调了该菌株的新陈代谢能力、大规模甘油转化的适宜性，以及利用 ZVI 提高 PDO 产量的新策略，推动了可持续生物加工技术的发展。

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引用次数: 0

Insight into the corrosion inhibition performance of Capsicum annuum L. leaf extract as corrosion inhibitor for copper in sulfuric acid medium 对辣椒叶提取物作为硫酸介质中铜缓蚀剂的缓蚀性能的深入研究

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-20 DOI: 10.1016/j.jtice.2024.105558

Ping Hu , Pengliang Cheng , Yundong Wu , Lei Guo , Abeer A. AlObaid

Background

Metal corrosion and protection have always been popular areas of research. Corrosion inhibitors are of great significance in metal corrosion protection. In this study, pure water extraction technical was utilized to acquire Capsicum annuum L. leaf extract (CALLE). The corrosion protection property of CALLE was revealed through a combination of theoretical and experimental using electrochemical methods, theoretical calculation and morphology analysis of surface.

Methods

In this study, we used polarization curve method and electrochemical impedance spectroscopy test to evaluate the corrosion inhibition performance of CALLE. Electrochemical test reveals that CALLE has exhibit high protection ability about corrosion. The corrosion inhibition efficiency can grow about 94 % as the contain rises 500 mg/L. As the temperature rises, its resistance efficiency can still be stabilized above 90 %. The test analyses of SEM and AFM convincing demonstration that CALLE can efficiently inhibit occurring about the corrosion in H₂SO₄ for copper.

Significant findings

It results reveal that the four effective components for CALLE can emerge excellent inhibition ability through theoretical analysis of theoretical calculation. The adsorption isotherm model shows that the active ingredient about CALLE was adsorbed correspond with the Langmuir adsorption isotherm model, and exist simultaneously physical and chemical adsorption. CALLE prepared by pure water extraction method can effectively reduce the cost of corrosion inhibitor.

背景金属腐蚀与防护一直是研究的热门领域。缓蚀剂在金属防腐中具有重要意义。本研究采用纯水提取技术获得了辣椒叶提取物（CALLE）。方法本研究采用极化曲线法和电化学阻抗谱测试评估了 CALLE 的缓蚀性能。电化学测试表明，CALLE 具有很高的腐蚀防护能力。当含量升至 500 mg/L 时，缓蚀效率可提高约 94%。随着温度的升高，其电阻效率仍能稳定在 90% 以上。扫描电镜和原子力显微镜的测试分析表明，CALLE 能有效抑制铜在 H2SO4 中的腐蚀。吸附等温线模型表明，CALLE有效成分的吸附符合Langmuir吸附等温线模型，同时存在物理吸附和化学吸附。纯水提取法制备的 CALLE 可有效降低缓蚀剂的成本。

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引用次数: 0

Cost-effective and eco-friendly synthesis of thermally stable Sr2+ doped Bi2S3 nanoflowers for efficient adsorption and visible-light-driven photocatalytic degradation of Rhodamine-B pollutant 低成本、环保型合成热稳定掺杂 Sr2+ 的 Bi2S3 纳米花，用于高效吸附和可见光驱动的光催化降解罗丹明-B 污染物

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-18 DOI: 10.1016/j.jtice.2024.105534

Anjli Sharma , Ashima Makhija , Lalita Saini , Anil Ohlan , Sajjan Dahiya , R. Punia , A.S. Maan

Background

Rhodamine-B is a hazardous pollutant used in textile industries that has adverse effects on humans and aquatic life. So, there is need to develop cost-effective and efficient photocatalysts.

Methods

Sr_xBi_2-xS₃ nanoflowers with varying Sr contents have been synthesized using hydrothermal method and have been studied by TGA, XRD, Rietveld refinement, UV-DRS, FESEM with EDX, PL and Zeta potential. The photocatalytic performance has been estimated by degrading RhB pollutants under visible light illumination.

Significant Findings

The morphology of the prepared Sr_xBi_2-xS₃ nanoparticles has been observed to be flower-like. They are stable up to 645 °C as assessed by TGA. Their Rietveld refinement revealed the orthorhombic crystal structure. E_g determined using DRS falls in the range of 1.45 eV to 1.37 eV, while PL studies corroborate decreased e⁻-h⁺ pairs recombination in Sr doped samples compared to pure. The negative value of surface potential ascertained using zeta potential makes them suitable for cationic dye. The impact of dopant concentration on RhB under visible light exposure reveals x = 0.06 exhibits the highest degradation efficiency (η ∼ 92 %) in 240 min utilizing 5 mg/100 ml solution of 10 ppm dye concentration. The adsorption kinetic model is of 1st order, while photodegradation kinetics is governed by Zero^th order model.

背景罗丹明-B 是纺织工业中使用的一种有害污染物，对人类和水生生物有不良影响。方法采用水热法合成了不同 Sr 含量的 CrxBi2-xS3 纳米花，并通过 TGA、XRD、Rietveld refinement、UV-DRS、FESEM with EDX、PL 和 Zeta 电位进行了研究。通过在可见光照射下降解 RhB 污染物，对其光催化性能进行了评估。经 TGA 评估，它们在高达 645 °C 的温度下仍保持稳定。对它们的里特维尔德细化显示出了正方晶体结构。使用 DRS 测定的 Eg 值在 1.45 eV 至 1.37 eV 之间，而 PL 研究证实，与纯样品相比，掺杂锶的样品中 e-h+ 对重组减少。利用 zeta 电位确定的负表面电位值使它们适合阳离子染料。在可见光照射下，掺杂剂浓度对 RhB 的影响表明，在 240 分钟内，利用 5 mg/100 ml 的 10 ppm 染料浓度溶液，x = 0.06 的降解效率最高（η ∼ 92 %）。吸附动力学模型为一阶，而光降解动力学受零阶模型支配。

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引用次数: 0

Numerical simulation of combined effects of a vertical magnetic field and thermal radiation on natural convection of non-Newtonian fluids confined between circular and square concentric cylinders 垂直磁场和热辐射对封闭在圆形和方形同心圆柱体之间的非牛顿流体自然对流的综合影响的数值模拟

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-16 DOI: 10.1016/j.jtice.2024.105538

Khalid Chtaibi , Youssef Dahani , Abdelkhalek Amahmid , Mohammed Hasnaoui , Haïkel Ben Hamed

Background

This study addresses magnetohydrodynamic (MHD) natural convection involving non-Newtonian fluids. Focusing on the annular region between concentric circular and square cylinders, the research examines the impact of a vertical magnetic field and thermal radiation.

Methods

The Multiple Relaxation Time Lattice Boltzmann Method (MRT-LBM) is employed to simulate momentum and energy interactions in non-Newtonian fluid. Control parameters like Rayleigh number, Hartmann number, Radiation parameter, aspect ratio, square cylinder subdivision, and power-law index are systematically varied, while maintaining a constant Prandtl number.

Significant findings

Using shear-thinning fluid (n < 1) significantly improves cooling, particularly in conjunction with radiation effect. Correlations for the mean Nusselt number are established, offering insights. Results emphasize the substantial influence of parameters like Ra, Rd, and AR. High values of the latter promote the flow intensity and heat evacuation. For n < 1, increasing Ra from 10³ to 5 × 10⁴ results in a substantial increase in the heat transfer rate reaching 65 %. For shear-thickening fluid, the heat transfer rate is reduced by 25.31 % at Ra = 5 × 10⁴ when Ha is increased from 0 to 50 in the absence of radiation. In addition, radiation enhances the heat transfer rate by 71.41 % by incrementing Rd from 0 to 0.8 for Ha = 0. The most pronounced effect of the radiation parameter is observed in the cases of Newtonian and shear-thickening fluids. Conversely, Ha and n act by reduction effects on the outputs of the problem. The attenuating effect of the magnetic field is more pronounced in the case of shear-thinning fluids. The plot of mean Nusselt number vs. AR shows an hysteresis phenomenon due to the existence of multiple steady solutions in a range of this parameter. In the latter range of AR, heat transfer induced by multicellular flow is higher than that induced by bicellular one. Heat transfer is somewhat enhanced by the RC configuration, compared to SC one.

本研究探讨了涉及非牛顿流体的磁流体力学（MHD）自然对流。研究以同心圆和方形圆柱体之间的环形区域为重点，考察了垂直磁场和热辐射的影响。采用多重松弛时间晶格玻尔兹曼法（MRT-LBM）模拟非牛顿流体中的动量和能量相互作用。瑞利数、哈特曼数、辐射参数、长宽比、方柱细分和幂律指数等控制参数在保持普朗特数不变的情况下被系统地改变。使用剪切稀化流体（小于 1）可明显改善冷却效果，特别是与辐射效应结合使用时。建立了平均努塞尔特数的相关性，提供了深入的见解。结果强调了 Ra、Rd 和 AR 等参数的重要影响。后者的高值会促进流动强度和热量排空。对于 < 1，将 Ra 从 10 提高到 5 × 10 会使传热率大幅提高，达到 65%。对于剪切增稠流体，在没有辐射的情况下，当 Ha 从 0 增加到 50 时，Ra = 5 × 10 的传热率降低了 25.31%。此外，将 Rd 从 0 增加到 0.8 = 0 时，辐射会使传热速率提高 71.41%。在牛顿流体和剪切增稠流体中，辐射参数的影响最为明显。相反，和 n 对问题的输出产生了减弱效应。磁场的衰减效应在剪切稀化流体中更为明显。平均努塞尔特数与 AR 的关系图显示出一种滞后现象，这是因为在该参数范围内存在多个稳定解。在 AR 的后一个范围内，多细胞流引起的传热高于双细胞流引起的传热。与 SC 结构相比，RC 结构在一定程度上增强了传热。

{"title":"Numerical simulation of combined effects of a vertical magnetic field and thermal radiation on natural convection of non-Newtonian fluids confined between circular and square concentric cylinders","authors":"Khalid Chtaibi , Youssef Dahani , Abdelkhalek Amahmid , Mohammed Hasnaoui , Haïkel Ben Hamed","doi":"10.1016/j.jtice.2024.105538","DOIUrl":"10.1016/j.jtice.2024.105538","url":null,"abstract":"<div><h3>Background</h3><p>This study addresses magnetohydrodynamic (MHD) natural convection involving non-Newtonian fluids. Focusing on the annular region between concentric circular and square cylinders, the research examines the impact of a vertical magnetic field and thermal radiation.</p></div><div><h3>Methods</h3><p>The Multiple Relaxation Time Lattice Boltzmann Method (MRT-LBM) is employed to simulate momentum and energy interactions in non-Newtonian fluid. Control parameters like Rayleigh number, Hartmann number, Radiation parameter, aspect ratio, square cylinder subdivision, and power-law index are systematically varied, while maintaining a constant Prandtl number.</p></div><div><h3>Significant findings</h3><p>Using shear-thinning fluid (<em>n</em> < 1) significantly improves cooling, particularly in conjunction with radiation effect. Correlations for the mean Nusselt number are established, offering insights. Results emphasize the substantial influence of parameters like Ra, Rd, and AR. High values of the latter promote the flow intensity and heat evacuation. For <em>n</em> < 1, increasing Ra from 10<sup>3</sup> to 5 × 10<sup>4</sup> results in a substantial increase in the heat transfer rate reaching 65 %. For shear-thickening fluid, the heat transfer rate is reduced by 25.31 % at Ra = 5 × 10<sup>4</sup> when Ha is increased from 0 to 50 in the absence of radiation. In addition, radiation enhances the heat transfer rate by 71.41 % by incrementing Rd from 0 to 0.8 for <em>Ha</em> = 0. The most pronounced effect of the radiation parameter is observed in the cases of Newtonian and shear-thickening fluids. Conversely, <em>Ha</em> and n act by reduction effects on the outputs of the problem. The attenuating effect of the magnetic field is more pronounced in the case of shear-thinning fluids. The plot of mean Nusselt number vs. AR shows an hysteresis phenomenon due to the existence of multiple steady solutions in a range of this parameter. In the latter range of AR, heat transfer induced by multicellular flow is higher than that induced by bicellular one. Heat transfer is somewhat enhanced by the RC configuration, compared to SC one.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141061031","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}

引用次数: 0

Degradation of ciprofloxacin by magnetic CuS/MnFe2O4 catalysts efficiently activated peroxymonosulfate 磁性 CuS/MnFe2O4 催化剂高效活化过一硫酸盐降解环丙沙星

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-15 DOI: 10.1016/j.jtice.2024.105533

Li Feng, Yanyan Liu, Yuxue Shan, Shuao Yang, Lanting Wu, Tianyu Shi

Background

Ciprofloxacin (CIP) is a broad-spectrum antibacterial agent. Its extensive use has led to high frequency detection in various water environments, resulting in environmental pollution. The peroxymonosulfate-based advanced oxidation processes (PMS-AOPs) is a promising method for the removal of organic pollutants due to its low cost and high redox potential.

Methods

Magnetic CuS/MnFe₂O₄ composites were successfully prepared using hydrothermal and solvothermal methods. The catalysts were characterized by XRD, SEM, TEM and VSM, and the degradation efficiency and mechanism of CIP by CuS/MnFe₂O₄/PMS system were investigated.

Significant findings

The results demonstrated that the magnetic CuS/MnFe₂O₄ composites exhibited superior catalytic performance than pure CuS and pure MnFe₂O₄. Under optimized degradation conditions (CuS/MnFe₂O₄=15 mg/L, PMS=1 mM, CIP=20 mg/L, initial pH = 5.89, T = 25 ℃), 98.9 % of CIP was degraded within 60 min. Metal ions (Cu, Mn, Fe) on the catalysts surface played an important role in activating PMS, whereas low-sulfur species (S²⁻ and S_n²⁻) promoted the Cu(II)/Cu(I), Mn(III)/Mn(II) and Fe(III)/Fe(II) cycles to accelerate the generation of free radicals. Additionally, $S O_{4}^{• -}$ and 1O₂ were considered to be important reactive species in the CuS/MnFe₂O₄/PMS system. Finally, the magnetic CuS/MnFe₂O₄ composites exhibited excellent recyclability and universality.

背景环丙沙星（CIP）是一种广谱抗菌剂。它的广泛使用导致在各种水环境中的高频检测，造成环境污染。基于过一硫酸盐的高级氧化工艺（PMS-AOPs）因其低成本和高氧化还原电位，是一种很有前景的去除有机污染物的方法。方法采用水热法和溶热法成功制备了磁性 CuS/MnFe2O4 复合材料。结果表明，磁性 CuS/MnFe2O4 复合材料的催化性能优于纯 CuS 和纯 MnFe2O4。在优化的降解条件下（CuS/MnFe2O4=15 mg/L，PMS=1 mM，CIP=20 mg/L，初始 pH=5.89，T=25 ℃），CIP 在 60 分钟内降解了 98.9%。催化剂表面的金属离子（Cu、Mn、Fe）在活化 PMS 方面发挥了重要作用，而低硫物种（S2- 和 Sn2-）则促进了 Cu(II)/Cu(I)、Mn(III)/Mn(II) 和 Fe(III)/Fe(II) 循环，加速了自由基的生成。此外，SO4--和 1O2 被认为是 CuS/MnFe2O4/PMS 系统中的重要活性物种。最后，磁性 CuS/MnFe2O4 复合材料具有出色的可回收性和通用性。

{"title":"Degradation of ciprofloxacin by magnetic CuS/MnFe2O4 catalysts efficiently activated peroxymonosulfate","authors":"Li Feng, Yanyan Liu, Yuxue Shan, Shuao Yang, Lanting Wu, Tianyu Shi","doi":"10.1016/j.jtice.2024.105533","DOIUrl":"https://doi.org/10.1016/j.jtice.2024.105533","url":null,"abstract":"<div><h3>Background</h3><p>Ciprofloxacin (CIP) is a broad-spectrum antibacterial agent. Its extensive use has led to high frequency detection in various water environments, resulting in environmental pollution. The peroxymonosulfate-based advanced oxidation processes (PMS-AOPs) is a promising method for the removal of organic pollutants due to its low cost and high redox potential.</p></div><div><h3>Methods</h3><p>Magnetic CuS/MnFe<sub>2</sub>O<sub>4</sub> composites were successfully prepared using hydrothermal and solvothermal methods. The catalysts were characterized by XRD, SEM, TEM and VSM, and the degradation efficiency and mechanism of CIP by CuS/MnFe<sub>2</sub>O<sub>4</sub>/PMS system were investigated.</p></div><div><h3>Significant findings</h3><p>The results demonstrated that the magnetic CuS/MnFe<sub>2</sub>O<sub>4</sub> composites exhibited superior catalytic performance than pure CuS and pure MnFe<sub>2</sub>O<sub>4</sub>. Under optimized degradation conditions (CuS/MnFe<sub>2</sub>O<sub>4</sub>=15 mg/L, PMS=1 mM, CIP=20 mg/L, initial pH = 5.89, <em>T</em> = 25 ℃), 98.9 % of CIP was degraded within 60 min. Metal ions (Cu, Mn, Fe) on the catalysts surface played an important role in activating PMS, whereas low-sulfur species (S<sup>2−</sup> and S<sub>n</sub><sup>2−</sup>) promoted the Cu(II)/Cu(I), Mn(III)/Mn(II) and Fe(III)/Fe(II) cycles to accelerate the generation of free radicals. Additionally, <span><math><mrow><mi>S</mi><msubsup><mi>O</mi><mrow><mn>4</mn></mrow><mrow><mo>•</mo><mo>−</mo></mrow></msubsup></mrow></math></span> and 1O<sub>2</sub> were considered to be important reactive species in the CuS/MnFe<sub>2</sub>O<sub>4</sub>/PMS system. Finally, the magnetic CuS/MnFe<sub>2</sub>O<sub>4</sub> composites exhibited excellent recyclability and universality.</p></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140946991","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}

引用次数: 0

Enhancing ionic conductivity and controlling lithium dendrite growth via ferroelectric ceramic Bi4Ti3O12 通过铁电陶瓷 Bi4Ti3O12 增强离子导电性并控制锂枝晶生长

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-14 DOI: 10.1016/j.jtice.2024.105513

Xi Guo , Jiayao Shan , Shuaiqi Gong , Jinting Xu , Qunjie Xu , PengHui Shi , YuLin Min

Background

Solid polymer electrolytes (SPEs) have gained numerous research interest in the field of lithium metal batteries. Solid polymer electrolytes have improved safety compared to liquid electrolytes. Despite this, their low ionic conductivity remains a major barrier to practical applications. To overcome the challenge of low ionic conductivity in SPEs, our study introduces a novel approach that integrates ferroelectric ceramics with polymer solid electrolytes.

Methods

We used a one-step molten salt method to synthesize Bi₄Ti₃O₁₂ (BIT), combined with a poly (vinylidene difluoride) matrix to form the composite solid-state electrolyte. Through various electrochemical characterizations and COMSOL Multiphysics simulations, we discovered that the ferroelectric properties of BIT significantly increase the dissociation of lithium salts, leading to a greater concentration of mobile lithium ions and more efficient ion transport.

Significant findings

This electrolyte showed a remarkable improvement in lithium-ion conductivity, reaching a value of 8.5 × 10⁻⁴ S cm⁻¹ at room temperature. Batteries made with these composite electrolytes demonstrate superior cycling stability, the capacity retention rates for LFP/SPEs/Li cells remain high, reaching 95 % even after 1,000 cycles at room temperature (25 °C). These findings highlight the promising applications of ferroelectric ceramics in solid-state batteries.

背景固态聚合物电解质（SPE）在锂金属电池领域获得了广泛的研究兴趣。与液态电解质相比，固态聚合物电解质具有更高的安全性。尽管如此，固态聚合物电解质的低离子电导率仍然是其实际应用的主要障碍。为了克服固态聚合物电解质离子电导率低的难题，我们的研究引入了一种将铁电陶瓷与聚合物固态电解质相结合的新方法。通过各种电化学表征和 COMSOL Multiphysics 仿真，我们发现 BIT 的铁电特性显著提高了锂盐的解离度，从而使移动锂离子的浓度更高，离子传输效率更高。使用这些复合电解质制造的电池具有卓越的循环稳定性，LFP/SPEs/Li 电池的容量保持率很高，在室温（25 °C）下循环 1000 次后仍能达到 95%。这些发现凸显了铁电陶瓷在固态电池中的应用前景。

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引用次数: 0

Synthesis, adsorption and theoretical calculation study of the two polar-modified hyper-cross-linked resins for efficient removal of o-toluidine from aqueous solution 高效去除水溶液中邻甲基苯胺的两种极性改性超交联树脂的合成、吸附和理论计算研究

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-14 DOI: 10.1016/j.jtice.2024.105523

Nan Wang, Fengfan Zhu, Maoqi Liu, Jiancheng Zhou, Yiwei Zhang, Yang Ge, Naixu Li

Background

In addition to their good structural designability, hyper-cross-linked resins (HCLPs) have a vast adsorption capacity. They are also easy to regenerate. It is an efficient adsorbent for o-toluidine (OT) removal and has broad application prospects.

Method

Two polar-modified hyper-cross-linked resins (PBJSG and BLWT) were synthesized by copolymerization of the monomers (trimellitic anhydride and 2-pyrrolidone) with the non-porous gel-type chloromethylated poly(styrene-divinylbenzene). The static adsorption method was used to study the influence of different factors on the adsorption. The adsorption mechanism of o-toluidine on the two resins was clarified by related theoretical calculations. The dynamic adsorption-desorption process of o-toluidine was finally studied.

Significant findings

The above resins had the best adsorption effect on o-toluidine. The adsorption of o-toluidine on the PBJSG and BLWT resins was feasible, exothermic, and spontaneous. The adsorption rate was controlled by the intraparticle diffusion and film diffusion steps. The affinity between OT and resins was higher than that between resins and OT⁺ ions. The relatively strong affinity of OT accounted for the high adsorption amount of OT in the pH range of 6–14. The affinity of PBJSG for o-toluidine was higher than that of BLWT. According to theoretical calculation studies, the mechanism of hydrogen-bonding and π-π stacking interaction was clearly revealed. The mixture of 75% ethanol (V/V) and 10% H₂SO₄ (V/V) was an effective desorption agent. In summary, this work provides a new convenient strategy for the preparation of novel o-toluidine removal adsorbents.

背景超交联树脂（HCLPs）除了具有良好的结构可设计性之外，还具有巨大的吸附能力。它们还易于再生。方法通过单体（偏苯三酸酐和 2-吡咯烷酮）与无孔凝胶型氯甲基化聚（苯乙烯-二乙烯基苯）共聚合合成了两种极性改性超交联树脂（PBJSG 和 BLWT）。采用静态吸附法研究了不同因素对吸附的影响。通过相关理论计算，阐明了邻甲基苯胺在两种树脂上的吸附机理。重要发现上述树脂对邻甲基苯胺的吸附效果最好。邻甲基苯胺在 PBJSG 和 BLWT 树脂上的吸附是可行的、放热的和自发的。吸附速率由颗粒内扩散和薄膜扩散步骤控制。OT 与树脂之间的亲和力高于树脂与 OT+ 离子之间的亲和力。OT 的亲和力相对较强，因此在 pH 值为 6-14 的范围内，OT 的吸附量较高。PBJSG 对邻甲基苯胺的亲和力高于 BLWT。理论计算研究清楚地揭示了氢键作用和 π-π 堆积作用的机理。75% 乙醇（V/V）和 10% H2SO4（V/V）的混合物是一种有效的解吸剂。总之，这项工作为制备新型邻甲苯胺脱附吸附剂提供了一种新的便捷策略。

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引用次数: 0

Enhanced photocatalytic degradation of diazinon using Ni:ZnO/Fe3O4 nanocomposite under solar light 在太阳光下使用 Ni:ZnO/Fe3O4 纳米复合材料增强对二嗪农的光催化降解

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-14 DOI: 10.1016/j.jtice.2024.105528

Hamzeh Salehzadeh , Kitirote Wantala , Behzad Shahmoradi , Afshin Maleki , Totsaporn Suwannaruang , Harikaranahalli Puttaiah Shivaraju , Ebrahim Mohammadi , Guogang Ren , David F. Jenkins , Hee-Jeong Choi , Mahdi Safari

Background

The increasing photocatalytic activity of Ni:ZnO/Fe₃O₄ nanocomposite in the diazinon degradation under solar light compared to bare ZnO and Ni:ZnO nanoparticles was examined.

Methods

The synthesized nanoparticles and nanocomposite were characterized by SEM, MAP-EDX, XRD, FTIR, DLS, Zeta Potential and UV–Vis Spectrophotometer methods. The photocatalytic degradation of diazinon was investigated under sunlight illumination while continuously mixing on a stirrer for 180 min.

Significant findings

The highest degradation efficiency was achieved for 1.5 wt% Ni:ZnO nanoparticles and 1.0 wt% Ni:ZnO/Fe₃O₄ nanocomposite at a diazinon concentration of 10 mg/L for the nanoparticle dose equal to 2 g/L was 95 % and 93 %, respectively. The recycling photocatalysts were investigated. Application of H₂O₂, potassium peroxymonosulfate (PMS) and S₂O₈²⁻ as chemical oxidants increased the photocatalytic activity of the nanocomposite. The use of 1.0 wt% Ni:ZnO/Fe₃O₄ nanocomposite along with 0.01 M H₂O₂ displayed the increasing photocatalytic performance. The simultaneous photocatalytic degradation efficiency of combined H₂O₂ and 1.0 wt% NZF nanocomposite for 100 mg/l of diazinon increased from 44 to 82 %. The photocatalytic mechanism of diazinon was proposed in three pathways.

背景考察了Ni:ZnO/Fe3O4纳米复合材料与裸ZnO和Ni:ZnO纳米颗粒相比在太阳光下降解二嗪农中光催化活性的提高。在二嗪农浓度为 10 mg/L 时，当纳米颗粒剂量等于 2 g/L 时，1.5 wt% Ni:ZnO 纳米颗粒和 1.0 wt% Ni:ZnO/Fe3O4 纳米复合材料对二嗪农的光催化降解效率分别为 95% 和 93%。对回收光催化剂进行了研究。使用 H2O2、过氧化单硫酸钾（PMS）和 S2O82- 作为化学氧化剂提高了纳米复合材料的光催化活性。在使用 1.0 wt% 的 Ni:ZnO/Fe3O4 纳米复合材料和 0.01 M H2O2 时，光催化性能不断提高。结合使用 H2O2 和 1.0 wt% NZF 纳米复合材料对 100 mg/l 的二嗪农的光催化降解效率从 44% 提高到 82%。二嗪农的光催化机理分为三个途径。

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引用次数: 0

Multiple times synthesis of silver nanowires by recycling the waste left after standard polyol synthesis for flexible transparent heater 利用标准多元醇合成后的废料多次合成银纳米线，用于柔性透明加热器

IF 5.7 3区工程技术 Q1 Chemical Engineering

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2024-05-14 DOI: 10.1016/j.jtice.2024.105529

Esther Dimngaihvungi , Manish Kumar , Atul Kumar Singh , Balaram Pani , Ashish Kumar Singh , Manjeet Singh

Background

Recycling of remnant materials such as solvents, various ions, stabilizing and reducing agents after solution phase synthesis and purification of the nanomaterials transmits favorable impact on industrial production.

Methods

In this research paper, we fabricated silver nanowire (AgNW)-based flexible transparent electrodes (FTEs), wherein synthesis of AgNWs was performed using remnant materials residual solvents, dissolved unreacted reagents left after standard polyol synthesis protocol.

Significant Findings

It has been found that the residue remains after standard polyol synthesis of AgNWs can be utilized multiple times for the synthesis of fresh nanowires so called recycled-AgNWs by optimizing input reactants and reaction conditions such as concentration of AgNO₃, FeCl₃, PVP etc. The structural and morphological studies of the recycled-AgNWs have been carried out using XRD, SEM, TEM, XPS. The FTE fabricated using such recycled-AgNWs delivered sheet resistance of 12.2 ± 1.1 Ω/sq with transmittance of 86 ± 4 % at 550 nm and sustained its conductivity after repeated bending cycles. The comparison between our FTE prepared using recycled-AgNWs and recently reported FTE using standard AgNWs have revealed the similar properties. Furthermore, we have demonstrated fabricated FTE as flexible transparent heater, which generated 80 °C of temperature by applying 7 V supply for 30 s. The quick temperature increase make the recycled-AgNWs-based transparent heater as an excellent antifogging or self-cleaning device, which can be further applied for various other applications.

背景回收利用溶液相合成和纯化纳米材料后的残余材料，如溶剂、各种离子、稳定剂和还原剂，会对工业生产产生有利影响。方法在本研究论文中，我们制作了基于银纳米线 (AgNW) 的柔性透明电极 (FTE)，其中 AgNW 的合成是利用标准多元醇合成方案后残余的溶剂、溶解的未反应试剂等残余材料进行的。重要发现通过优化输入反应物和反应条件（如 AgNO3、FeCl3、PVP 等的浓度），发现标准多元醇合成 AgNWs 后的残留物可多次用于合成新的纳米线，即所谓的再循环 AgNWs。利用 XRD、SEM、TEM 和 XPS 对再生-AgNWs 的结构和形态进行了研究。使用这些再生氮化银制造的 FTE 在 550 纳米波长下的片电阻为 12.2 ± 1.1 Ω/sq，透射率为 86 ± 4 %，并且在反复弯曲后仍能保持其导电性。我们使用回收的 AgNWs 制备的 FTE 与最近报道的使用标准 AgNWs 制备的 FTE 相比，具有相似的特性。此外，我们还将制备的 FTE 作为柔性透明加热器进行了演示，在 7 V 电源下工作 30 秒即可产生 80 °C 的温度。

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引用次数: 0