Journal of the Taiwan Institute of Chemical Engineers最新文献

Interfacial-engineered construction of heterostructured PZM@P-NiCoPS architectures: towards robust, wear-resistant and non-flammable epoxy composites 异质结构PZM@P-NiCoPS结构的界面工程结构：朝着坚固，耐磨和不易燃的环氧复合材料

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-02-01 DOI: 10.1016/j.jtice.2026.106663

Weilong Chen , Jinian Yang , Bingyi Li , Hanxing Yang , Yufan Zhang , Xia Xu , Zhoufeng Wang , Shibin Nie

Background

Epoxy resin (EP) is extensively employed in high-end fields such as aerospace and naval engineering, but its inherent poor wear resistance and flame retardancy pose significant challenges for applications in harsh environments. To solve this problem, the incorporation of functional nanofillers into EP has emerged as one of the most promising solutions.

Methods

In present work, we have constructed heterostructured architectures of polyphosphazene microspheres supporting phosphorus-functionalized nickel/cobalt bimetallic phyllosilicate (PZM@P-NiCoPS) via interfacial engineering, featuring both excellent reinforcement and wear resistance of phyllosilicate and flame retardancy from phosphorus-containing groups. Following meticulous integration with the resin matrix, the structure-property relationships of EP/PZM@P-NiCoPS composites were comprehensively explored.

Significant Findings

Extensive measurements confirm the successful synthesis of target PZM@P-NiCoPS architectures, which are uniformly dispersed within the matrix resin with well-bonded interfaces and strengthens the mechanical performances remarkably. By adding 1% of PZM@P-NiCoPS, the tensile strength and elastic modulus are increased by 37.04% and 29.6%, respectively. Tribological investigation demonstrates that PZM@P-NiCoPS significantly enhances the abrasion resistance of EP composites, and the lowest wear rate of 0.84×10⁻⁵ mm³/Nm is achieved when the filler concentration reaches 3%, showing a considerable reduction of 91.3% relative to control sample. Finally, the great positive influence of added PZM@P-NiCoPS on the flame retardancy of EP composites is also discussed. Thus, this work demonstrates a facile yet promising strategy to design efficient multi-functional reinforcements, as well as high-performance polymeric composites.

环氧树脂（EP）广泛应用于航空航天和船舶工程等高端领域，但其固有的较差的耐磨性和阻燃性对恶劣环境下的应用构成了重大挑战。为了解决这一问题，在EP中加入功能性纳米填料已成为最有前途的解决方案之一。方法本研究通过界面工程构建了支持磷功能化镍/钴双金属层状硅酸盐（PZM@P-NiCoPS）的聚磷腈微球异质结构，具有层状硅酸盐优异的补强耐磨性和含磷基团的阻燃性。通过与树脂基体的细致结合，全面探索了EP/PZM@P-NiCoPS复合材料的结构-性能关系。大量的测量证实了目标结构PZM@P-NiCoPS的成功合成，这些结构均匀地分散在具有良好结合界面的基体树脂中，并显着增强了力学性能。添加1%的PZM@P-NiCoPS，拉伸强度和弹性模量分别提高37.04%和29.6%。摩擦学研究表明，PZM@P-NiCoPS显著提高了EP复合材料的耐磨性，当填料浓度达到3%时，其磨损率最低，为0.84×10−5 mm3/Nm，相对于对照样品降低了91.3%。最后还讨论了PZM@P-NiCoPS的加入对EP复合材料阻燃性能的巨大积极影响。因此，这项工作展示了一个简单而有前途的策略来设计高效的多功能增强材料，以及高性能聚合物复合材料。

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引用次数: 0

Eco-friendly synthesis of bio-supported silver nanoparticles over magnetic chitosan: An efficient recyclable catalyst for N-substituted tetrazoles synthesis 磁性壳聚糖环保合成生物负载纳米银：n取代四唑合成的高效可回收催化剂

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-30 DOI: 10.1016/j.jtice.2025.106605

Yahao Dong , Ahmad Parandoust , Reza Sheibani

Background

Tetrazoles are significant N-containing heterocycles with broad applications in pharmaceuticals, coordination chemistry, and materials science. Conventional nanomaterial-based synthetic approaches often rely on hazardous reagents and non-recyclable catalysts, limiting their sustainability. Thus, the development of eco-friendly, recyclable, and biosynthesized nanocatalysts for the efficient synthesis of these heterocycles remains a significant challenge.

Methods

In this study, a novel and eco-friendly approach for synthesizing magnetic chitosan-supported silver nanoparticles (Ag NPs@MCS) has been developed utilizing the aqueous extract of Adinandra nitida leaves as a bioreducing/capping agent. The spherical Ag NPs were immobilized on modified chitosan-coated magnetic NPs. The nanocatalyst was extensively characterized by X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM), vibrating sample magnetometer (VSM), thermogravimetry/derivative thermogravimetry (TG-DTG), energy dispersive spectroscopy (EDS), elemental mapping, and fast Fourier transform (FFT) analyses. The as-prepared Ag NPs@MCS nanocomposite demonstrated excellent catalytic activity in the (2 + 3)-cycloaddition reaction involving various secondary/tertiary cyanamides with sodium azide (NaN₃), leading to high-yield production of amino- and N-sulfonyl tetrazoles.

Significant Findings

The biosynthesized Ag NPs@MCS nanocomposite exhibited remarkable catalytic activity, affording high yields of N-substituted tetrazole derivatives under thermal conditions. Remarkably, this green synthesis approach avoids harmful reagents for Ag NPs synthesis and provides a highly efficient, recyclable, and reusable catalyst. The catalyst retained its structural integrity and catalytic performance over seven consecutive cycles, highlighting its stability and potential for sustainable organic synthesis.

四氮杂环化合物是一类重要的含氮杂环化合物，在医药、配位化学和材料科学等领域有着广泛的应用。传统的基于纳米材料的合成方法往往依赖于危险试剂和不可回收的催化剂，限制了它们的可持续性。因此，开发生态友好的、可回收的、生物合成的纳米催化剂来高效合成这些杂环化合物仍然是一个重大挑战。方法本研究开发了一种新型的生态友好的方法，利用白针叶水提物作为生物还原/盖膜剂合成磁性壳聚糖负载的纳米银（Ag NPs@MCS）。将球形银纳米粒子固定在壳聚糖修饰的磁性纳米粒子上。通过x射线衍射分析（XRD）、傅里叶变换红外光谱（FTIR）、透射电子显微镜（TEM）、扫描透射电子显微镜（STEM）、振动样品磁强计（VSM）、热重/导数热重（TG-DTG）、能量色散光谱（EDS）、元素映射和快速傅里叶变换（FFT）分析对纳米催化剂进行了广泛的表征。制备的Ag NPs@MCS纳米复合材料在叠氮化钠（NaN3）与多种仲/叔氰酰胺的(2 + 3)-环加成反应中表现出优异的催化活性，可高产出氨基和n -磺酰基四唑。生物合成的Ag NPs@MCS纳米复合材料表现出显著的催化活性，在热条件下提供了高产量的n取代四唑衍生物。值得注意的是，这种绿色合成方法避免了合成Ag NPs的有害试剂，并提供了一种高效、可回收和可重复使用的催化剂。该催化剂在连续七个循环中保持了其结构完整性和催化性能，突出了其稳定性和可持续有机合成的潜力。

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引用次数: 0

Fabrication of TBO-PSPH/MXene composite membrane for high-efficiency Rhodamine B separation 高效分离罗丹明B的TBO-PSPH/MXene复合膜的制备

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-30 DOI: 10.1016/j.jtice.2026.106650

Zhenying Li , Yanze Yang , Xu Chen , Yulu Hu , Xia Sun , Jiliang Xie , Tao Yang

Background:As a typical refractory cationic dyes, Rhodamine B (RhB), poses a significant challenge in aquatic environment. Methods:To address this issue, this study fabricated a novel TBO-PSPH/MXene composite membrane by covalently grafting the silane-based N-halamine poly[5,5-dimethyl-3-(3’-triethoxysilylpropyl)hydantoin](PSPH) onto the surface of MXene, followed by the intercalation of the polycyclic dye Toluidine Blue O (TBO) into MXene interlayers. The composite membrane was characterized by XRD, XPS, FT-IR, N₂ adsorption /desorption, AFM and FESEM. Signifiicant Findings:The results demonstrated that the intercalation of TBO significantly enhanced structural stability of the membrane as well as the incorporation of PSPH reduced the surface negative charges and improved hydrophilicity of the membrane. Separation experiments with a 15 mg/L RhB solution at pH 1 and room temperature (RT) demonstrated a high rejection of 97.3% and a water flux of 4.63 L/(m²·h·bar). Notably, the incorporation of 10% NaCl significantly enhanced membrane performance, elevating RhB rejection to 98.9% while increasing water flux to 6.29 L/(m²·h·bar). The separation mechanism is attributed to synergistic effects of electrostatic repulsion, size-sieving, steric hindrance, and adsorption. This work provides a promising strategy for developing high-performance MXene membranes for treating challenging dye wastewater under various conditions.

背景：罗丹明B （Rhodamine B, RhB）是一种典型的难降解阳离子染料，在水生环境中具有重要的应用价值。方法：为了解决这一问题，本研究通过在MXene表面共价接枝硅烷基n -卤胺聚[5,5-二甲基-3-（3 ' -三乙基氧基硅丙基）酰脲](PSPH)，然后在MXene中间层中插入多环染料甲苯胺蓝O (TBO)，制备了一种新型的TBO-PSPH/MXene复合膜。采用XRD、XPS、FT-IR、N2吸附/脱附、AFM和FESEM对复合膜进行了表征。结果表明，TBO的插入显著增强了膜的结构稳定性，PSPH的掺入降低了膜的表面负电荷，提高了膜的亲水性。在室温条件下，以15mg /L的RhB溶液进行分离实验，其去除率为97.3%，水通量为4.63 L/（m²·h·bar）。值得一提的是，10% NaCl的掺入显著提高了膜的性能，将RhB截留率提高到98.9%，同时将水通量提高到6.29 L/（m²·h·bar）。分离机理是静电斥力、筛分、位阻和吸附的协同作用。这项工作为开发高性能MXene膜处理各种条件下的挑战性染料废水提供了一个有前途的策略。

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引用次数: 0

Precise regulation of Smithsonite–Quartz interfacial behavior by a low-dosage piperidinium collector in a reverse flotation system 低剂量哌啶捕收剂在反浮选系统中对史密斯石-石英界面行为的精确调控

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-29 DOI: 10.1016/j.jtice.2026.106657

Xiaoqi Ban , Jin Yao , Wanzhong Yin , Wenju Sun , Taozhong Zhang , Chao Yin , Weifan Du , Junfeng Wang , Yulian Wang

Background

The efficient separation of smithsonite from quartz remains a key bottleneck in the valorization of oxidized zinc ores. Conventional sulfidization flotation suffers from high reagent consumption, complex procedures, and elevated costs, highlighting the urgent need for novel processes and selective collectors for effective desilication and purification.

Methods

Microflotation experiments, zeta potential measurements, surface wettability analyses, FTIR, XPS, AFM, and ToF-SIMS were employed to investigate the flotation selectivity and interfacial interaction mechanisms of N-hexadecyl-N-methylpiperidinium bromide (HMPB) in the reverse flotation desilication of smithsonite.

Findings

Outstanding separation performance was achieved at pH 7.0 with an HMPB dosage of 7.5 mg/L, yielding a zinc concentrate grade of 47.01% and a recovery of 93.69%. The ζ-potential, wettability, FTIR, and XPS analyses confirmed that HMPB selectively interact with oxygen sites on quartz via synergistic electrostatic and hydrogen-bonding interactions, significantly increasing surface potential, hydrophobicity, and adhesion work, while showing negligible influence on smithsonite. Furthermore, AFM and ToF-SIMS analyses revealed the formation of a continuous HMPB adsorption layer exclusively on the quartz surface, where the distribution of organic fragments strongly correlates with Si rather than Zn, confirming the pronounced selectivity of HMPB for quartz and its effectiveness in sustainable desilication and purification.

在氧化锌矿中如何有效分离菱锌矿和石英是锌矿石增值研究的瓶颈。传统的硫化浮选存在试剂消耗高、程序复杂、成本高的问题，迫切需要新的工艺和选择性捕收剂来实现有效的脱硅和提纯。方法采用微浮选实验、zeta电位测定、表面润湿性分析、FTIR、XPS、AFM和ToF-SIMS等方法，研究了n -十六烷基- n -甲基溴化哌啶（HMPB）在smithsonite反浮选脱硅中的浮选选择性和界面相互作用机理。结果在pH 7.0、HMPB用量为7.5 mg/L条件下，锌精矿品位为47.01%，回收率为93.69%。ζ-电位、润湿性、FTIR和XPS分析证实，HMPB通过协同静电和氢键相互作用选择性地与石英上的氧位点相互作用，显著提高了表面电位、疏水性和附着力，而对smithsonite的影响可以忽略不计。此外，AFM和ToF-SIMS分析显示，HMPB在石英表面形成了一个连续的吸附层，其中有机碎片的分布与Si而不是Zn密切相关，证实了HMPB对石英的显著选择性及其持续脱硅和净化的有效性。

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引用次数: 0

Sulfonic acid functionalized torrefied biocoal facilitates levulinates preparation: Reaction kinetics and process cost analysis 磺酸功能化碳化生物煤有利于乙酰丙酸酯的制备：反应动力学和工艺成本分析

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-29 DOI: 10.1016/j.jtice.2026.106642

Nidhi Yadav , Bhawana Devi , Gaurav Yadav , Meera Cheviri , Lakshmanan Potturaja , Vishnu Bakthavachalam , Joy K Roy , Sasikumar Elumalai

Background

Due to the increase in population and industrialisation, the global energy demand is steeply increasing. However, the non-renewable fossil resources are in a state. Therefore, it is urgent to develop renewable resources to meet the energy demand.

Methodology

We employed the torrefied biomass as a porous catalyst to synthesize alkyl levulinate (a potential drop-in fuel compound) via levulinic acid esterification. The rice straw-derived torrefied solid (TRS) was functionalized with SO₃H (TRS@SO₃H), offering 1.23 mmol/g Brønsted acidic sites with 21 m²/g surface area, which are beneficial for the esterification reaction.

Significant Findings

Maximum ethyl levulinate (EL) yield of 98.9% at 60 °C within 35 min under microwave heating conditions, with a turnover frequency of 1.34x10^-2 h^-1. It also demonstrated versatility by synthesising various alkyl levulinates, with product yields varying depending on the carbon numbers. Furthermore, it exhibited robustness for reuse based on its effectiveness up to 5 cycles with a minor reduction of EL (12% relative). The techno-economic process calculation estimated the production cost of EL as low as $ 4.7/L.

由于人口和工业化的增长，全球能源需求急剧增加。然而，不可再生的化石资源处于一种状态。因此，开发可再生资源以满足能源需求已迫在眉睫。方法以碳化生物质为多孔催化剂，通过乙酰丙酸酯化反应合成乙酰丙酸烷基酯（一种潜在的drop-in - fuel compound）。用SO3H （TRS@SO3H）对秸秆基固化固体（TRS）进行功能化，得到了1.23 mmol/g Brønsted酸性位点，表面积为21 m2/g，有利于酯化反应。结果表明：在微波加热条件下，在60°C条件下，在35 min内乙酰丙酸乙酯（EL）的收率最高可达98.9%，周转频率为1.34 × 10-2 h-1。它还通过合成各种乙酰丙酸烷基酯证明了其通用性，其产品收率取决于碳数。此外，基于其长达5个循环的有效性，它显示了可重用的鲁棒性，EL减少了少量（相对12%）。技术经济过程计算估计EL的生产成本低至4.7美元/升。

{"title":"Sulfonic acid functionalized torrefied biocoal facilitates levulinates preparation: Reaction kinetics and process cost analysis","authors":"Nidhi Yadav , Bhawana Devi , Gaurav Yadav , Meera Cheviri , Lakshmanan Potturaja , Vishnu Bakthavachalam , Joy K Roy , Sasikumar Elumalai","doi":"10.1016/j.jtice.2026.106642","DOIUrl":"10.1016/j.jtice.2026.106642","url":null,"abstract":"<div><h3>Background</h3><div>Due to the increase in population and industrialisation, the global energy demand is steeply increasing. However, the non-renewable fossil resources are in a state. Therefore, it is urgent to develop renewable resources to meet the energy demand.</div></div><div><h3>Methodology</h3><div>We employed the torrefied biomass as a porous catalyst to synthesize alkyl levulinate (a potential drop-in fuel compound) via levulinic acid esterification. The rice straw-derived torrefied solid (TRS) was functionalized with SO<sub>3</sub>H (TRS@SO<sub>3</sub>H), offering 1.23 mmol/g Brønsted acidic sites with 21 m<sup>2</sup>/g surface area, which are beneficial for the esterification reaction.</div></div><div><h3>Significant Findings</h3><div>Maximum ethyl levulinate (EL) yield of 98.9% at 60 °C within 35 min under microwave heating conditions, with a turnover frequency of 1.34x10<sup>-2</sup> h<sup>-1</sup>. It also demonstrated versatility by synthesising various alkyl levulinates, with product yields varying depending on the carbon numbers. Furthermore, it exhibited robustness for reuse based on its effectiveness up to 5 cycles with a minor reduction of EL (12% relative). The techno-economic process calculation estimated the production cost of EL as low as $ 4.7/L.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"183 ","pages":"Article 106642"},"PeriodicalIF":6.3,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073959","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

A nitrogen-sulfur co-doped porous carbon Zinc-based catalyst for the acetylene hydration 氮硫共掺杂多孔碳锌基乙炔水化催化剂

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-28 DOI: 10.1016/j.jtice.2026.106655

Yufan Ma, Qianran Sun, Qingle Wang, Bin Dai, Zongyuan Wang, Qinqin Wang

Background

The acetylene hydration process for acetaldehyde production represents a well-established and strategically significant pathway in coal chemistry. Nevertheless, this reaction encounters several challenges, such as the high reactivity of acetylene, competitive adsorption among reactants, and intricate reaction networks that lead to by-product formation. The remarkable porosity and exceptional chemical stability of metal-organic frameworks endow them with immense potential for the preparation of porous carbon materials.

Methods

Herein, the sulfur-modified ZIF-8 materials in situ were synthesized through a one-pot method and further prepared a N, S co-doped porous carbon Zn-based catalyst by thermal decomposition. The catalytic performance of N, S co-doped porous carbon Zn-based materials results showed that the Zn-NSC-600 exhibited excellent catalytic performance.

Significant Findings

The X-ray absorption fine structure (XAFS) and X-ray photoelectron spectroscopy (XPS) results revealed the presence of zinc species in N, S co-doped porous carbon Zn-based materials as Zn-N₃ structure, while sulfur atoms were embedded into the carbon support via C-S-C bonds. The TEM and EDS results revealed an evident carbon shell on the surface of the Zn-NSC-600 material, with the active metal Zn exhibiting excellent dispersibility. Additionally, the addition of S-atoms could effectively stabilize the material structure and suppress the loss of active Zn species. Meanwhile, the DFT calculations indicated that the activation of acetylene was the rate-determining step for the Zn-NSC materials. The introduction of sulfur atoms could significantly decrease the activation energy of acetylene, which is more favorable for the reaction. This study not only presented a novel N, S co-doped porous carbon Zn-based catalysts with superb catalytic efficiency but also proposed a strategy to enhance and control the heteroatom doping of Zn-based catalysts for acetylene hydration.

乙炔水化工艺生产乙醛是煤化学中一条成熟且具有战略意义的途径。然而，这种反应遇到了一些挑战，例如乙炔的高反应活性，反应物之间的竞争性吸附，以及导致副产物形成的复杂反应网络。金属有机骨架具有显著的孔隙度和优异的化学稳定性，在制备多孔碳材料方面具有巨大的潜力。方法采用一锅法原位合成硫改性ZIF-8材料，并通过热分解法制备N， S共掺杂多孔碳锌基催化剂。N， S共掺杂多孔碳锌基材料的催化性能研究结果表明，Zn-NSC-600具有优异的催化性能。x射线吸收精细结构（XAFS）和x射线光电子能谱（XPS）结果表明，锌以Zn-N3结构存在于N， S共掺杂多孔碳锌基材料中，而硫原子通过C-S-C键嵌入到碳载体中。TEM和EDS结果表明，Zn- nsc -600材料表面有明显的碳壳层，活性金属Zn具有良好的分散性。此外，s原子的加入可以有效地稳定材料结构，抑制活性Zn的损失。同时，DFT计算表明，乙炔的活化是锌- nsc材料的速率决定步骤。硫原子的引入使乙炔的活化能明显降低，有利于反应的进行。本研究不仅提出了一种具有优异催化效率的新型N， S共掺杂多孔碳zn基催化剂，而且提出了一种增强和控制zn基催化剂杂原子掺杂用于乙炔水化的策略。

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引用次数: 0

Bio-carbon anchored praseodymium molybdate microflowers for sensitive detection of xanthine in biofluids and fish meat 生物碳锚定钼酸镨微花灵敏检测生物体液和鱼肉中的黄嘌呤

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-28 DOI: 10.1016/j.jtice.2026.106641

Krishnan Muthusamy , Richard Mariadasse , Rajini Murugesan , Karkuzhali Rajendran , Muthusankar Ganesan , Rajesh Madhuvilakku , Shakkthivel Piraman , Gopu Gopalakrishnan , Guo-Ping Chang-Chien

Background

Xanthine (XA) is an important biomarker for metabolic disorders and serves as a key indicator in fish meat during storage and transportation. However, accurate electrochemical detection of XA is often hampered by interference from structurally similar purine compounds and the sluggish electron-transfer kinetics of conventional electrodes. Overcoming these limitations requires the development of electrode systems with high electrical conductivity, large active surface area, and enhanced selective recognition capability.

Methods

A sustainable sensing platform was developed by integrating flower-like praseodymium molybdate (PrM) nanostructures with pistachio shell-derived activated carbon (Pv-AC) through a simple hydrothermal–calcination route. The conductive bio-derived carbon significantly enhanced the electroactive surface area and charge-transfer efficiency of the PrM matrix, thereby facilitating rapid XA oxidation. The Structural integrity, hierarchical morphology, and elemental composition of PrM@Pv-AC composite were confirmed by comprehensive spectroscopic analysis. When immobilized onto a glassy carbon electrode (GCE), the composite formed a stable, highly active electrochemical interface.

Significant findings

The PrM@Pv-AC/GCE sensor enabled sensitive and selective XA detection using differential pulse voltammetry, exhibiting two linear ranges (1–55 μM and 65–605 μM), a low detection limit of 0.0174 μM, and a sensitivity of 0.427 μA μM^-1 cm^-2. The sensor also demonstrated excellent stability, reproducibility, and strong anti-interference capability. Real-sample validation in human biofluids and fish meat extracts confirmed excellent recovery, highlighting its biomedical and food monitoring potential.

黄嘌呤（xanthine， XA）是一种重要的代谢紊乱生物标志物，是鱼类在储存和运输过程中的关键指标。然而，XA的准确电化学检测经常受到结构相似嘌呤化合物的干扰和传统电极缓慢的电子传递动力学的阻碍。克服这些限制需要开发具有高导电性、大活性表面积和增强选择性识别能力的电极系统。方法将花状钼酸镨（PrM）纳米结构与开心果壳衍生活性炭（Pv-AC）通过简单的水热煅烧途径结合，构建可持续传感平台。导电生物衍生碳显著提高了PrM基质的电活性表面积和电荷转移效率，从而促进了XA的快速氧化。通过综合光谱分析证实了PrM@Pv-AC复合材料的结构完整性、层次形貌和元素组成。当固定在玻碳电极（GCE）上时，复合材料形成了一个稳定的、高活性的电化学界面。PrM@Pv-AC/GCE传感器采用差分脉冲伏安法实现了XA的灵敏和选择性检测，具有1 ~ 55 μM和65 ~ 605 μM两个线性范围，低检出限为0.0174 μM，灵敏度为0.427 μA μM-1 cm-2。该传感器还具有良好的稳定性、重复性和较强的抗干扰能力。在人体生物体液和鱼肉提取物中的实际样品验证证实了出色的回收率，突出了其生物医学和食品监测潜力。

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引用次数: 0

Catalytic reduction of ferric iron by sulfur dioxide over activated carbon: Process optimization, thermodynamics, and kinetics 二氧化硫在活性炭上催化还原铁：过程优化，热力学和动力学

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-28 DOI: 10.1016/j.jtice.2026.106656

Zhaoxue Zhang , Hua Li , Panying Zhou , Liuchi Ye , Yayun Feng , Yunxia Peng , Ruixiang Wang , Bin Zeng

Background

Ferric iron (Fe³⁺), widely present in acidic hydrometallurgical leachates, must be efficiently reduced to ferrous iron (Fe²⁺) to improve metal recovery and process sustainability. Although sulfur dioxide (SO₂) is an inexpensive reductant with strong reducing potential, its application is often limited by slow kinetics and incomplete conversion.

Methods

This study introduces activated carbon (AC) as a heterogeneous catalyst to enhance the SO₂-mediated reduction of Fe³⁺. Thermodynamic analysis was performed to identify conditions under which the reaction proceeds spontaneously, indicating a moderately acidic and reducing environment as optimal. The effects of pH, temperature, SO₂ flow rate, and AC dosage were systematically investigated through single-factor and orthogonal experiments. Kinetic modeling and catalyst reusability tests were further conducted to evaluate reaction behavior and catalyst stability.

Significant Findings

The presence of activated carbon markedly enhanced the kinetics of SO₂-mediated Fe³⁺ reduction, achieving over 93% conversion within 60 min under optimized conditions (60 °C, 6% H₂SO₄, 22.5 g/L Fe³⁺, 100 mL/min SO₂, and 0.667 g/L AC). The reaction followed a pseudo-first-order kinetic model in the initial stage, and kinetic analysis indicated facilitated reaction rates in the presence of AC. This enhancement is attributed to improved adsorption and accelerated interfacial electron transfer on the AC surface. Although partial deactivation was observed during reuse, the process remains cost-effective due to the low cost and wide availability of AC and SO₂. Overall, the proposed AC-assisted SO₂ reduction system offers an efficient, sustainable, and industrially applicable strategy for Fe³⁺ removal in hydrometallurgical operations.

背景：三铁（Fe3+）广泛存在于酸性湿法冶金浸出液中，必须有效地还原为亚铁（Fe2+），以提高金属回收率和工艺的可持续性。虽然二氧化硫（SO2）是一种廉价的还原剂，具有很强的还原潜力，但它的应用往往受到动力学缓慢和转化不完全的限制。方法采用活性炭（AC）作为非均相催化剂，促进二氧化硫对Fe3+的还原。进行热力学分析以确定反应自发进行的条件，表明中等酸性和还原环境是最佳的。通过单因素试验和正交试验，系统考察了pH、温度、SO2流速、AC用量等因素的影响。进一步进行了动力学建模和催化剂可重用性试验，以评价反应行为和催化剂的稳定性。在优化条件（60°C, 6% H2SO4, 22.5 g/L Fe3+, 100 mL/min SO2, 0.667 g/L AC）下，活性炭的存在显著增强了SO2介导的Fe3+还原动力学，在60 min内转化率超过93%。反应初始阶段遵循准一级动力学模型，动力学分析表明，AC的存在促进了反应速率。这种增强归因于AC表面吸附的改善和界面电子转移的加速。虽然在重复使用过程中观察到部分失活，但由于AC和SO2的低成本和广泛可用性，该过程仍然具有成本效益。总的来说，所提出的ac辅助SO2还原系统为湿法冶金操作中的Fe3+去除提供了一种高效、可持续和工业适用的策略。

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引用次数: 0

Study on the effects of dopamine-modified electroplating bath on the performance of copper plating on carbon fiber surfaces 多巴胺修饰电镀液对碳纤维表面镀铜性能影响的研究

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-28 DOI: 10.1016/j.jtice.2026.106644

Guodong Zhang , Weizhuang Yang , Yonglian Sun , Shengzong Ci , Mingyu Wang , Kun Qiao

Background

Copper-plated carbon fibers integrate copper’s electrical conductivity and carbon fibers’ mechanical strength, offering significant potential in lightweight functional materials. However, electroplating-derived Cu coatings suffer from thickness non-uniformity and defects, restricting performance optimization.

Methods

This study introduces a dopamine (DA)-mediated strategy to regulate electroplating baths for improved copper-plated carbon fibers properties.

Significant Findings

Experimental results show DA modification reduces copper-plated carbon fibers diameter distribution standard deviation by 27%, decreases coating mass loss after thermal shock by 75%, enhances single-filament tensile strength by 6.5%, and boosts interfacial adhesion and environmental stability. Combined with annealing, electrical conductivity reaches 1.42 × 10⁵ S/cm, a 3.12-fold increase over pristine samples. Theoretical analyses reveal protonated dopamine (DAH⁺) forms strong coordination with Cu²⁺, exhibiting a 315.1 kcal/mol binding energy on Cu(111) via parallel benzene ring adsorption, while weak interactions with carbon fibers (58.0 kcal/mol) enable selective regulation of Cu²⁺ electrodeposition. This preferential adsorption promotes uniform nucleation in exposed carbon fiber areas, addressing coating uniformity issues. This work provides a novel strategy to address the uniformity challenge of copper coatings on carbon fibers and establishes a theoretical foundation for the design and fabrication of high-performance conductive fiber materials.

镀铜碳纤维结合了铜的导电性和碳纤维的机械强度，在轻质功能材料方面具有巨大的潜力。然而，电镀衍生铜镀层存在厚度不均匀性和缺陷，制约了镀层性能的优化。方法介绍了多巴胺（DA）介导的电镀液调节策略，以改善镀铜碳纤维的性能。结果表明：经DA改性后的镀铜碳纤维直径分布标准差降低27%，热冲击后涂层质量损失降低75%，单丝抗拉强度提高6.5%，界面附着力和环境稳定性提高。结合退火，电导率达到1.42 × 10 S/cm，比原始样品增加了3.12倍。理论分析表明，质子化多巴胺(DAH) +与Cu 2 +形成强配位，通过平行苯环吸附在Cu（111）上的结合能为315.1 kcal/mol，而与碳纤维的弱相互作用（58.0 kcal/mol）使Cu 2 +的电沉积具有选择性调节。这种优先吸附促进了暴露的碳纤维区域的均匀成核，解决了涂层均匀性问题。该研究为解决碳纤维表面铜涂层的均匀性问题提供了一种新的策略，并为高性能导电纤维材料的设计和制造奠定了理论基础。

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引用次数: 0

Enhancing low-temperature CO2 methanation via a dual anchoring impregnation strategy for highly dispersed Ni-Ce/SBA-15 catalysts 高分散Ni-Ce/SBA-15催化剂的双锚定浸渍策略促进低温CO2甲烷化

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2026-01-24 DOI: 10.1016/j.jtice.2026.106640

Chen Feng , Haoxi Jiang , Hao Gong , Lingtao Wang , Guochao Yang

Background

CO₂ methanation plays a critical role in reducing carbon emissions. The development of Ni-based catalysts with simple synthesis processes and low costs for low-temperature methanation demonstrates promising industrial application prospects, yet it also faces significant challenges. Ni-based catalysts generally require higher metal loadings, which in turn makes it difficult to achieve high metal dispersion, severely limiting their low-temperature catalytic activity.

Methods

In this study, a simple co-impregnation method was employed in combination with a dual-strategy approach: hydrogen peroxide pretreatment to increase the concentration of silanol groups on the SBA-15 silica support surface and the assistance of ethylene glycol (EG) during the impregnation process.

Significant findings

The significant finding of this work lies in the demonstrated synergy of a dual strategies to stabilize highly dispersed Ni catalysts for CO₂ methanation. While high dispersion and good low-temperature activity have been reported elsewhere, this study specifically shows that combining (1) ethylene glycol-assisted impregnation to improve initial dispersion with (2) the utilization of SBA-15 silanol groups as anchoring sites effectively mitigates sintering. This combined approach resulted in a catalyst achieving 77% CO₂ conversion and 100% CH₄ selectivity at 250 °C, with characterization confirming the enhanced stability afforded by the synergy.

二氧化碳甲烷化在减少碳排放方面起着至关重要的作用。制备工艺简单、成本低的镍基低温甲烷化催化剂具有良好的工业应用前景，但也面临着重大挑战。镍基催化剂通常需要较高的金属负载，这反过来又使其难以实现高金属分散，严重限制了其低温催化活性。方法本研究采用简单的共浸渍法，结合双氧水预处理提高SBA-15二氧化硅载体表面硅醇基团浓度和乙二醇（EG）辅助浸渍的双策略方法。这项工作的重要发现在于双重策略的协同作用，以稳定高度分散的Ni催化剂用于CO2甲烷化。虽然其他地方已经报道了高分散性和良好的低温活性，但本研究特别表明，将(1)乙二醇辅助浸渍改善初始分散性与(2)利用SBA-15硅烷醇基团作为锚定位点有效地缓解烧结。在250℃条件下，该催化剂的CO2转化率达到77%，CH4选择性达到100%，并通过表征证实了协同作用增强的稳定性。

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引用次数: 0