Journal of Industrial and Engineering Chemistry最新文献_第5页

Non-thermal plasma-mediated green synthesis of chitosan-functionalized gold nanoparticles for enhanced cancer immunogenicity 非热等离子体介导的绿色合成壳聚糖功能化金纳米颗粒增强癌症免疫原性

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-16 DOI: 10.1016/j.jiec.2025.06.029

Tirtha Raj Acharya , Manorma Negi , Paritosh Patel , Prajwal Lamichhane , Taewan Kim , Eunbi Shim , Sandhya Gautam , Linh Nhat Nguyen , Rizwan Wahab , Neha Kaushik , Eun Ha Choi , Nagendra Kumar Kaushik

Chitosan-functionalized gold nanoparticles (Au@CS NPs) are promising anticancer drugs because of their biocompatibility, cytotoxicity, and immunomodulatory properties. However, most traditional synthetic pathways rely on toxic reagents, which significantly limit their biomedical application. This study reports the single-step aqueous-phase synthesis of Au@CS NPs via plasma-liquid interactions using a non-thermal plasma jet at atmospheric pressure. The 3% hydrogen-mixed argon plasma feed gas facilitated the simultaneous reduction of gold ions and the oxidation of chitosan by plasma-generated electrons, hydrogen atoms, and reactive oxygen and nitrogen species. Thus, the prepared Au@CS NPs exhibited extensive cytotoxicity against lung adenocarcinoma (A549) and colorectal cancer (HT-29) cells, with negligible toxicity against normal lung fibroblasts (MRC-5). They also effectively induced immunogenic cell death, as indicated by the release of damage-associated molecular patterns such as calreticulin (CRT) and high-mobility group protein B1 (HMGB1). Cellular uptake was confirmed to ensure effective internalization in cancer cells, thus opening doors for application in targeted drug delivery. This green synthesis route not only removes hazardous redox chemical reagents but also enhances the therapeutic efficacy of Au@CS NPs. This dual action, combining direct cytotoxicity with immune activation, makes Au@CS NPs promising candidates for cancer immunotherapy and nanomedicine applications.

壳聚糖功能化金纳米颗粒（Au@CS NPs）因其生物相容性、细胞毒性和免疫调节特性而成为前景广阔的抗癌药物。然而，大多数传统的合成途径依赖于有毒试剂，这极大地限制了它们在生物医学上的应用。本研究报道了在大气压下使用非热等离子体射流通过等离子体-液体相互作用单步水相合成Au@CS NPs。3%氢混合氩等离子体原料气促进了等离子体产生的电子、氢原子、活性氧和活性氮同时还原金离子和氧化壳聚糖。因此，制备的Au@CS NPs对肺腺癌（A549）和结直肠癌（HT-29）细胞表现出广泛的细胞毒性，对正常肺成纤维细胞（MRC-5）的毒性可以忽略不计。它们还有效地诱导免疫原性细胞死亡，如释放损伤相关的分子模式，如钙网蛋白（CRT）和高迁移率组蛋白B1 （HMGB1）。细胞摄取被证实可以确保癌细胞的有效内化，从而为靶向药物递送的应用打开了大门。这种绿色合成路线不仅去除了有害的氧化还原化学试剂，而且提高了Au@CS NPs的治疗效果。这种双重作用，结合了直接的细胞毒性和免疫激活，使Au@CS NPs成为癌症免疫治疗和纳米医学应用的有希望的候选者。

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引用次数: 0

The relationship between adsorption-desorption and inhibition efficiency of imidazoline quaternary ammonium salt under flow 流动条件下咪唑啉季铵盐的吸附-解吸与抑制效率的关系

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-14 DOI: 10.1016/j.jiec.2025.06.028

Min Qin , Zihan Zhu , Yuhan Liu , Nan Ye , Yihang Chen , Shijian Zhang , Xidi Lyu , Jihui Leng , Kexi Liao

Corrosion inhibitors are widely used to protect oil and gas pipelines from CO₂-induced corrosion. Understanding the film-forming behavior of inhibitors under realistic flow conditions is crucial for optimizing their performance. This study investigates the film-forming mechanism and corrosion inhibition efficiency of imidazoline quaternary ammonium salt (IQAS) in a CO₂-saturated 3 % NaCl solution at 50℃, simulating pipeline flow conditions. A custom-designed multiphase flow loop system was employed, complemented by electrochemical tests, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), 3D microscopy, and molecular dynamics simulations. Results reveal that IQAS inhibits corrosion through a synergistic mechanism involving cathodic physical adsorption and chemisorption via complexation. The inhibition efficiency initially increases with flow velocity, peaking at 80.92 % at 0.2 m/s, but decreases at higher velocities due to accelerated desorption. SEM and EDS analyses demonstrate that flow velocity significantly impacts mass transfer and film stability. At velocities below 0.5 m/s, diffusion-dominated mass transfer promotes uniform film formation, whereas velocities above 0.5 m/s lead to film disruption and localized pitting. These findings provide critical insights into optimizing corrosion inhibitor performance under dynamic flow conditions.

缓蚀剂广泛用于保护石油和天然气管道免受二氧化碳腐蚀。了解缓蚀剂在实际流动条件下的成膜行为对优化其性能至关重要。模拟管道流动条件，研究了咪唑啉季铵盐（IQAS）在50℃co2饱和3% NaCl溶液中的成膜机理和缓蚀效果。采用定制的多相流循环系统，辅以电化学测试、扫描电子显微镜（SEM）、能量色散光谱（EDS）、3D显微镜和分子动力学模拟。结果表明，IQAS通过阴极物理吸附和络合化学吸附的协同机制抑制腐蚀。缓蚀效率随着流速的增大而增大，当流速为0.2 m/s时，缓蚀效率达到80.92%，但在流速较大时，由于脱附加速，缓蚀效率降低。SEM和EDS分析表明，流速对传质和膜稳定性有显著影响。当速度低于0.5 m/s时，扩散主导的传质促进了均匀的膜形成，而速度高于0.5 m/s时，导致膜破坏和局部点蚀。这些发现为在动态流动条件下优化缓蚀剂性能提供了重要见解。

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引用次数: 0

Cellulose hydrogels as effective desiccants for water-contaminated hydraulic lubricant oil 纤维素水凝胶作为水污染液压润滑油的有效干燥剂

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-13 DOI: 10.1016/j.jiec.2025.06.025

Bianca Ramos Estevam , Karina Mayumi Tsuruta , Mechelangelo Viana Mancuzo , Aldemir Aparecido Cavallini Junior , Ângela Maria Moraes , Leonardo Vasconcelos Fregolente

This study presents a novel approach for demulsification and dehydration of hydraulic lubricant oils by using a natural and renewable material: cellulose hydrogel. Designed to meet industrial requirements, the system features a compact bed with radial oil distribution. Process kinetics, sorption mechanisms, impact of hydrogel quantity, and material reusability were analyzed in batch systems. Effects of temperature (from 25 to 45 °C) and flow rate (from 1 to 2 L.d^-1) were evaluated under continuous flow using a 2² factorial design. Results showed that cellulose hydrogel significantly demulsifies and dehydrates the oil, reducing turbidity from haze 6 to haze 1 and removing up to 80 % of the initial water content. Increasing hydrogel mass decreased water removal time without affecting equilibrium efficiency. Regeneration tests indicated that hydrogel effectiveness is maintained for at least 5 cycles. A 24-hour continuous oil flow treatment confirmed the prolonged system usability. Oil properties before and after the hydrogel treatment were maintained, ensuring suitability for industrial applications. This work marks a novel contribution to oil purification technologies by compellingly demonstrating the potential of cellulose hydrogel as a green, efficient, and reusable desiccant material.

本研究提出了一种利用天然可再生材料纤维素水凝胶对液压润滑油进行破乳脱水的新方法。该系统设计用于满足工业要求，具有径向油分布的紧凑床层。分析了过程动力学、吸附机理、水凝胶数量的影响以及材料的可重复使用性。采用22因子设计，在连续流条件下评估温度（25 ~ 45°C）和流量（1 ~ 2 L.d-1）的影响。结果表明，纤维素水凝胶显著破乳脱水油，降低浊度从阴霾6到阴霾1，去除高达80%的初始含水量。增加水凝胶质量可减少除水时间，但不影响平衡效率。再生试验表明，水凝胶的有效性保持至少5个周期。24小时的连续油流处理证实了系统的长期可用性。水凝胶处理前后的油性质保持不变，确保了工业应用的适用性。这项工作通过令人信服地证明纤维素水凝胶作为一种绿色、高效和可重复使用的干燥剂材料的潜力，标志着对油净化技术的新贡献。

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引用次数: 0

Polymeric functionalization of concrete waste using vinyl acetate and allyl alcohol for Cd(II) removal: optimization and performance evaluation 醋酸乙烯基和烯丙醇对混凝土废料聚合功能化脱除Cd（II）的优化及性能评价

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-13 DOI: 10.1016/j.jiec.2025.06.024

Ali Jafari , Homayon Ahmad Panahi , Seyedeh Hoda Rahmati , Amirhosein Khosravi

Heavy metal contamination of wastewater due to industrial development can permanently harm humans and the environment. This study addressed this issue by introducing a polymeric adsorbent consisting of allyl alcohol-vinyl acetate-coated concrete waste for the removal of Cd(II) ions in an aqueous medium. Several techniques have been employed to characterize the morphology and structure of the prepared nanoadsorbent. The experimental results modeled using response surface methodology coupled with central composite design indicated a quadratic relationship with p < 0.0001 for removal efficiency. Statistical validation through analysis of variance and experimental confirmation demonstrated strong correlation between observed and predicted values. Process optimization revealed maximum Cd(II) removal efficiency under the following conditions: operating temperature of 25 °C, contact time of 24 min, and solution pH of 7. Kinetic and isotherm studies revealed that Cd(II) adsorption is primarily governed by physisorption on a heterogeneous surface, with a maximum adsorption capacity of 4.464 mg g⁻¹. The nanoadsorbent retained 76.97 % of its adsorption–desorption efficiency after five cycles. The adsorbent showed good preparation repeatability, stability, and reusability with high removal efficiency (88.97 % to 89.30 %) and satisfactory repeatability of (1.25 % to 2.23 %) in different water samples, indicating strong potential for environmental applications.

工业发展造成的废水重金属污染对人类和环境具有永久性危害。本研究通过引入一种由烯丙醇-醋酸乙烯酯涂层混凝土废料组成的聚合物吸附剂来去除水介质中的Cd（II）离子，从而解决了这一问题。采用了几种技术来表征所制备的纳米吸附剂的形态和结构。采用响应面法结合中心复合设计建模的实验结果表明，去除效率与p <； 0.0001呈二次关系。通过方差分析和实验验证的统计验证表明，观测值与预测值之间存在较强的相关性。工艺优化结果表明，操作温度为25℃，接触时间为24 min，溶液pH为7时，Cd（II）的去除率最高。动力学和等温线研究表明，Cd（II）的吸附主要由非均相表面的物理吸附控制，最大吸附量为4.464 mg g−1。经过5次循环后，纳米吸附剂的吸附-解吸效率仍为76.97%。该吸附剂具有良好的制备重复性、稳定性和可重复使用性，对不同水样的去除率在88.97% ~ 89.30%之间，重复性在1.25% ~ 2.23%之间，具有较好的环境应用潜力。

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引用次数: 0

Synergistic enhancement of nickelate stacked perovskite Pr2NiO4/g-C3N4 hybrid composite for detecting industrial pollutants in aquatic zones 镍酸盐堆叠钙钛矿Pr2NiO4/g-C3N4复合材料对水体工业污染物检测的协同增强作用

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-13 DOI: 10.1016/j.jiec.2025.06.026

Rajendran Surya , Sivaramakrishnan Vinothini , Farhana Yasmin Rahman , Balamurugan Arumugam , Subramanian Sakthinathan , Te-Wei Chiu

4-Nitrotoluene (4-NT), a toxic industrial pollutant extensively used in dyes, synthetic fibers, and paints, poses severe environmental risks due to its persistent contamination of soil and aquatic systems. To address this challenge, we developed a Pr₂NiO₄@g-C₃N₄ hybrid electrocatalyst by integrating lanthanide-based Pr₂NiO₄ flakes synthesized through a self-combustion glycine nitrate process (GNP) onto the surface of graphitic carbon nitride (g-C₃N₄) sheets. The formation was confirmed by XRD, FTIR, XPS, FE-SEM, and TEM characterizations. Nanocomposite’s synergistic effects between Pr₂NiO₄ and g-C₃N₄ offer a larger active surface area, enhanced electron transfer, and exceptional electrocatalytic activity for 4-NT detection. Pr₂NiO₄@g-C₃N₄/GCE sensor demonstrates a wide linear detection range (0.05–416 µM), an ultra-low limit of detection (LOD) of 54 nM, and the highest sensitivity (15.66 µA µM⁻¹ cm²), which outperforms existing sensors. Rigorous validation using cyclic voltammetry and i-t amperometry proposed that the sensor has admirable selectivity, reproducibility (RSD < 3.8 % for 5 sensors), repeatability (RSD < 2.1 % for 5 runs), and operational stability around 2000 s. Real-sample analysis of Pr₂NiO₄@g-C₃N₄ sensor in river, tap, and industrial wastewater achieved recoveries of 90–97 %, validating accuracy in complex matrices. This work provides an affordable and flexible platform for monitoring nitroaromatic pollutants in environmental systems.

4-硝基甲苯（4-NT）是一种有毒的工业污染物，广泛用于染料、合成纤维和油漆中，由于其对土壤和水生系统的持续污染，造成了严重的环境风险。为了解决这一挑战，我们开发了一种Pr2NiO4@g-C3N4混合电催化剂，将通过自燃硝酸甘氨酸工艺（GNP）合成的镧系Pr2NiO4片整合到石墨氮化碳（g-C3N4）片的表面。通过XRD， FTIR， XPS， FE-SEM和TEM表征证实了其形成。纳米复合材料在Pr2NiO4和g-C3N4之间的协同效应提供了更大的活性表面积，增强的电子转移，以及对4-NT检测的特殊电催化活性。Pr2NiO4@g-C3N4/GCE传感器具有宽线性检测范围（0.05-416µM），超低检测限（LOD）为54 nM，最高灵敏度（15.66µaµM−1 cm2），优于现有传感器。使用循环伏安法和i-t安培法进行的严格验证表明，该传感器具有令人满意的选择性、再现性（5个传感器的RSD <； 3.8%）、重复性（5次运行的RSD <； 2.1%）和2000 s左右的运行稳定性。Pr2NiO4@g-C3N4传感器在河流、自来水和工业废水中的实际样品分析回收率达到90 - 97%，在复杂矩阵中验证了准确性。这项工作为环境系统中硝基芳香族污染物的监测提供了一个经济、灵活的平台。

{"title":"Synergistic enhancement of nickelate stacked perovskite Pr2NiO4/g-C3N4 hybrid composite for detecting industrial pollutants in aquatic zones","authors":"Rajendran Surya , Sivaramakrishnan Vinothini , Farhana Yasmin Rahman , Balamurugan Arumugam , Subramanian Sakthinathan , Te-Wei Chiu","doi":"10.1016/j.jiec.2025.06.026","DOIUrl":"10.1016/j.jiec.2025.06.026","url":null,"abstract":"<div><div>4-Nitrotoluene (4-NT), a toxic industrial pollutant extensively used in dyes, synthetic fibers, and paints, poses severe environmental risks due to its persistent contamination of soil and aquatic systems. To address this challenge, we developed a Pr<sub>2</sub>NiO<sub>4</sub>@g-C<sub>3</sub>N<sub>4</sub><span> hybrid electrocatalyst by integrating lanthanide-based Pr</span><sub>2</sub>NiO<sub>4</sub><span> flakes synthesized through a self-combustion glycine nitrate process (GNP) onto the surface of graphitic carbon nitride (g-C</span><sub>3</sub>N<sub>4</sub><span><span>) sheets. The formation was confirmed by XRD, FTIR, </span>XPS<span>, FE-SEM, and TEM characterizations. Nanocomposite’s synergistic effects between Pr</span></span><sub>2</sub>NiO<sub>4</sub> and g-C<sub>3</sub>N<sub>4</sub><span><span><span> offer a larger active surface area, enhanced </span>electron transfer, and exceptional </span>electrocatalytic activity for 4-NT detection. Pr</span><sub>2</sub>NiO<sub>4</sub>@g-C<sub>3</sub>N<sub>4</sub>/GCE sensor demonstrates a wide linear detection range (0.05–416 µM), an ultra-low limit of detection (LOD) of 54 nM, and the highest sensitivity (15.66 µA µM<sup>−1</sup> cm<sup>2</sup><span>), which outperforms existing sensors. Rigorous validation using cyclic voltammetry<span><span> and i-t amperometry proposed that the sensor has admirable </span>selectivity, reproducibility (RSD < 3.8 % for 5 sensors), repeatability (RSD < 2.1 % for 5 runs), and operational stability around 2000 s. Real-sample analysis of Pr</span></span><sub>2</sub>NiO<sub>4</sub>@<em>g</em>-C<sub>3</sub>N<sub>4</sub><span> sensor in river, tap, and industrial wastewater achieved recoveries of</span> <!-->90–97 %, validating accuracy in complex matrices. This work provides an affordable and flexible platform for monitoring nitroaromatic pollutants in environmental systems.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"153 ","pages":"Pages 641-652"},"PeriodicalIF":5.9,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145705219","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

Solvent-free synthesis of zwitterionic gel electrolytes using 2-methacryloyloxyethyl phosphorylcholine for solid-state supercapacitors 固态超级电容器用2-甲基丙烯酰氧乙基磷酸胆碱无溶剂合成两性离子凝胶电解质

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-13 DOI: 10.1016/j.jiec.2025.06.021

Hye Jin Lee , Do Young Maeng , Jin Hyuk Kim , Sang Hui Kang , Bumjin Kim , Jeonghun Baek , Jong Hak Kim , Jungjoon Yoo , Jung Hyun Lee

We report a zwitterionic gel polymer electrolyte (GPE) synthesized via a solvent-free UV crosslinking process using 2-methacryloyloxyethyl phosphorylcholine (MPC), poly(ethylene glycol) diacrylate (PEGDA) and ionic liquid (EMIMTFSI). The incorporation of zwitterionic MPC unit into the PEGDA network enhances ionic dissociation and promotes a conformal interface with the porous carbon electrodes. This intimate electrode–electrolyte contact promotes the effective utilization of the electrode surface, leading to a higher initial capacitance. Moreover, the zwitterionic framework maintains mechanical compliance and interfacial stability during repeated cycling, thereby suppressing the growth of internal resistance and mitigating IR drop. As a result, the GPE-MPC system enables stable charge transport with minimal degradation under long-term operation.

These findings highlight the potential of zwitterion-functionalized polymer electrolytes as a robust strategy for enhancing both the initial electrochemical performance and cycling stability of solid-state supercapacitors.

本文报道了以2-甲基丙烯酰氧乙基磷酸胆碱（MPC）、聚乙二醇二丙烯酸酯（PEGDA）和离子液体（EMIMTFSI）为原料，通过无溶剂紫外交联法制备的两性离子凝胶聚合物电解质（GPE）。两性离子MPC单元加入PEGDA网络增强了离子解离，促进了与多孔碳电极的保形界面。这种密切的电极-电解液接触促进了电极表面的有效利用，导致更高的初始电容。此外，两性离子框架在重复循环中保持力学顺应性和界面稳定性，从而抑制内阻的增长，减轻IR下降。因此，GPE-MPC系统能够在长期运行下实现稳定的电荷传输，并将退化降到最低。这些发现突出了两性离子功能化聚合物电解质作为提高固态超级电容器初始电化学性能和循环稳定性的强大策略的潜力。

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引用次数: 0

Experimental investigation and mechanistic analysis of PMMA dust explosion suppression by a novel three-phase-gel foam 新型三相凝胶泡沫抑制PMMA粉尘爆炸的实验研究及机理分析

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-13 DOI: 10.1016/j.jiec.2025.06.020

Yifan Li, Jianwei Cheng, Rong Chen, Zhiyuan Ma

Dust explosions represent a highly hazardous incident in industrial production. Polymethyl Methacrylate (PMMA), as a widely utilized synthetic material, poses significant explosion risks in its dust form. Addressing the limitations of current dust explosion suppressants, such as their simple composition and limited effectiveness, this study investigates the suppression performance and mechanism of a novel three-phase-gel foam on PMMA dust explosions. Explosion characteristics were analyzed across PMMA particle sizes (200 to 2000 mesh) and concentrations (128–641 g/m³). Suppression experiments comparing water mist and the new foam were conducted for 500 and 2000 mesh powders. Results show that finer particles and higher concentrations increase explosion intensity and risk of secondary explosions. The three-phase-gel foam exhibited superior suppression to water mist, especially at 500 mesh and 128 g/m³, achieving a 32.09 % reduction in flame length and 59.73 % in peak velocity, with appearance times extended by 332 ms and 248 ms. Mechanism analysis via TG-DSC, SEM, and XRD revealed that the foam’s thermal stability, adhesion, and multi-phase structure form an effective barrier, enhance cooling, and inhibit radical chain reactions. These findings demonstrate the foam’s strong potential as a multi-mechanism dust explosion suppressant, offering practical value for industrial safety.

粉尘爆炸是工业生产中的一种高度危险事件。聚甲基丙烯酸甲酯（PMMA）是一种广泛使用的合成材料，其粉尘形式具有重大的爆炸危险。针对现有粉尘爆炸抑制剂成分单一、效果有限的局限性，研究了一种新型三相凝胶泡沫对PMMA粉尘爆炸的抑制性能和机理。分析了不同PMMA粒径（200 - 2000目）和浓度（128-641 g/m3）的爆炸特性。对500目和2000目粉末进行了水雾和新型泡沫的抑制实验。结果表明，颗粒越细、浓度越高，爆炸强度越大，二次爆炸危险性越大。三相凝胶泡沫对水雾的抑制效果较好，特别是在500目和128 g/m3时，火焰长度减少32.09%，峰值速度减少59.73%，出现时间分别延长332 ms和248 ms。通过TG-DSC、SEM和XRD等分析表明，泡沫的热稳定性、粘附性和多相结构形成了有效的屏障，增强了冷却，抑制了自由基链反应。这些发现表明，泡沫作为一种多机理的粉尘爆炸抑制剂具有很强的潜力，为工业安全提供了实用价值。

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引用次数: 0

3D co-continuous polylactide/cellulose composite foam prepared using directional crystallization 定向结晶法制备三维共连续聚丙交酯/纤维素复合泡沫

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-11 DOI: 10.1016/j.jiec.2025.06.015

Yejin Park, Sumin Chu, Jonghwi Lee

The environmental concerns associated with non-biodegradable plastic foams have motivated a large volume of research into sustainable alternatives. Biodegradable polymers such as polylactide (PLA) have been considered for this purpose, but progress on processing methods and their properties has been limited by their poor foaming properties. This investigation presents, for the first time, a crystallization-based method to create a novel 3D co-continuous composite foam consisting of PLA and cellulose with a unique open-pore structure. The cellulose is derived from discarded coffee grounds. The 3D co-continuous structure successfully provided composites with excellent performance without the need for interface engineering. Mechanical tests show a significant improvement in the properties of composite foam, including Young’s modulus (6.7 times) and yield strength (4.7 times). Thermal analysis showed that the foam’s resistance to oxidative degradation improved with PLA incorporation. Both RCG and PLA/RCG foams demonstrated full degradability in soil over nine months, emphasizing their environmental benefits. Therefore, the proposed material can be a future foam with outstanding characteristics as a sustainable solution that can solve environmental problems related to traditional materials.

与不可生物降解的塑料泡沫有关的环境问题促使了对可持续替代品的大量研究。生物可降解聚合物如聚乳酸（PLA）已被考虑用于此目的，但由于其较差的发泡性能，其加工方法和性能的进展受到限制。这项研究首次提出了一种基于结晶的方法来制造一种新型的三维共连续复合泡沫，该泡沫由PLA和纤维素组成，具有独特的开孔结构。纤维素是从废弃的咖啡渣中提取的。三维共连续结构成功地为复合材料提供了优异的性能，而无需界面工程。力学试验表明，复合泡沫的性能有了显著改善，包括杨氏模量（6.7倍）和屈服强度（4.7倍）。热分析表明，PLA的加入提高了泡沫的抗氧化降解能力。RCG和PLA/RCG泡沫在9个月的土壤中都显示出完全降解性，强调了它们的环境效益。因此，所提出的材料可以成为一种具有突出特征的未来泡沫，作为一种可持续的解决方案，可以解决与传统材料相关的环境问题。

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引用次数: 0

Revealing the phase transition behaviors during the sulphating roasting process of lepidolite: Focus on the role of sodium and potassium 揭示锂云石硫酸盐焙烧过程中的相变行为：重点研究钠和钾的作用

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-11 DOI: 10.1016/j.jiec.2025.06.016

Liqin Deng , Xuheng Liu , Xingyu Chen , Jiangtao Li , Lihua He , Fenglong Sun , Zhongwei Zhao

Lithium extraction from lepidolite commonly utilizes roasting followed by leaching. During high-temperature roasting, mineral phase transitions occur, transforming lithium within the mineral structure into more easily leachable components. However, the rational process designs for improving lithium extraction are limited by incomplete understanding of the phase transition behaviors of lithium-bearing phase during roasting. Therefore, this study systematically investigates the structural evolution of lepidolite with additives Na₂SO₄ and K₂SO₄, proposing a phase transition mechanism from lepidolite phase to soluble lithium sulfate during the sulphating roasting process. The findings indicate that Na⁺ exhibits a greater thermodynamic tendency to exchange Li⁺ within mineral structures, while K⁺ plays a crucial role in directing the phase transition towards the formation of stable potassium aluminosilicate phase. The proportion of additive Na⁺ and K⁺ determines the reaction equilibrium and final state. By controlling the proper proportion between lepidolite, Na₂SO_4, and K₂SO₄, Na⁺ exchanges Li⁺ of lepidolite with rapid efficiency, whereas K⁺ plays the role of avoiding the formation of sodium aluminosilicate glass phase and enlarging the layer spacing for promoting the continuous progress of the reactions. This work offers a novel concept for structural regulation in the sulphating roasting process of lepidolite, contributing significantly to the advancement of lepidolite extraction technology.

从锂云母中提取锂通常采用焙烧后浸出的方法。在高温焙烧过程中，矿物发生相变，将矿物结构中的锂转化为更容易浸出的成分。然而，由于对含锂相在焙烧过程中的相变行为了解不全面，限制了合理的工艺设计以提高锂的提取率。因此，本研究系统考察了添加Na2SO4和K2SO4的锂云石的结构演变，提出了硫酸化焙烧过程中锂云石相向可溶性硫酸锂相变的机理。研究结果表明，Na+在矿物结构中表现出更大的交换Li+的热力学倾向，而K+在引导相转变形成稳定的铝硅酸盐钾相方面起着至关重要的作用。添加剂Na+和K+的比例决定了反应的平衡和最终状态。通过控制锂云石、Na2SO4和K2SO4的适当比例，Na+能快速高效地交换锂云石中的Li+，而K+则起到避免铝硅酸钠玻璃相形成和扩大层间距的作用，促进反应的持续进行。本研究为锂云石硫酸盐焙烧过程的结构调控提供了新的思路，对锂云石萃取技术的进步具有重要意义。

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引用次数: 0

Electrocatalytic urea oxidation over self-supported Cu-NiS@CFP: Synergistic effect of electronic structure and morphology engineering 自持型电催化尿素氧化Cu-NiS@CFP：电子结构与形态工程的协同效应

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-06-11 DOI: 10.1016/j.jiec.2025.06.022

Jianfang Meng , Shengli Zhu , Chengkai Xia

Developing efficient non-noble metal catalysts for the urea oxidation reaction (UOR) is pivotal for energy-efficient hydrogen production through urea-assisted water electrolysis. Herein, a self-supported Cu-doped NiS nanosheet on carbon fiber paper (Cu-NiS@CFP) was synthesized via a one-step solvothermal method, featuring three-dimensional nanosheets decorated with ultrafine nanoparticles. Structural characterizations revealed that Cu doping induced lattice distortion in Ni₁₇S₁₈, reduced crystallinity through atomic disorder, and generated abundant surface defects via vacancy formation. The hierarchical nanosheet architecture endows the catalyst with a large specific surface area (17.89 m²∙g⁻¹) and mesoporous structure, facilitating mass transport and active site exposure. Electrochemical measurements demonstrate that Cu-NiS@CFP exhibits superior UOR performance with a low onset potential of 1.38 V vs. RHE at 10 mA∙cm⁻², a rapid Tafel slope of 32.4 mV∙dec^-1, a high current efficiency of above 90 % at 1.45 V vs. RHE, and robust stability with less than 14 % current density decay after 20 h of uninterrupted operation. XPS analysis confirms strong electron interactions between Cu and Ni, elevating the valence state of Ni to facilitate the formation of Ni³⁺ active sites. This work highlights the synergistic effects of morphological optimization and electronic structure modulation in enhancing UOR activity, providing a rational design strategy for advanced transition metal sulfide catalysts.

开发高效的非贵金属尿素氧化反应催化剂是实现尿素辅助水电解高效制氢的关键。本文采用一步溶剂热法在碳纤维纸（Cu-NiS@CFP）上合成了一种自支撑的cu掺杂NiS纳米片，该纳米片具有超细纳米粒子修饰的三维纳米片。结构表征表明，Cu掺杂导致Ni17S18晶格畸变，原子无序导致结晶度降低，空位形成导致大量表面缺陷。层次化的纳米片结构使催化剂具有较大的比表面积（17.89 m2∙g−1）和介孔结构，有利于质量运输和活性位点暴露。电化学测量表明，Cu-NiS@CFP具有优异的UOR性能，在10 mA∙cm−2时相对于RHE的起始电位低至1.38 V，快速的Tafel斜率为32.4 mV∙dec1，在1.45 V相对于RHE时电流效率高达90%以上，并且在不间断工作20 h后电流密度衰减小于14%，具有强大的稳定性。XPS分析证实了Cu和Ni之间的强电子相互作用，提高了Ni的价态，促进了Ni3+活性位点的形成。本研究强调了形态优化和电子结构调制在提高UOR活性中的协同作用，为先进过渡金属硫化物催化剂的合理设计提供了策略。

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