Journal of Industrial and Engineering Chemistry最新文献_第6页

Microwave-assisted synthesis of Nd-doped La2CuO4 perovskite photocatalysts for enhanced degradation of methyl orange and E. Coli inactivation in wastewater treatment 微波辅助合成nd掺杂La2CuO4钙钛矿光催化剂对废水中甲基橙的强化降解和大肠杆菌的灭活

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-16 DOI: 10.1016/j.jiec.2025.07.038

Saranya Arumugam , Murad Alsawalha , Priya Srivastava , AnbuMegala Murugesan , Orawan Rojviroon , Ranjith Rajendran , Natacha Phetyim , Thammasak Rojviroon

The development of efficient perovskite photocatalysts remains a pivotal area of research for advanced water treatment technologies. In this study, Nd-doped La₂CuO₄ (La_2-XNd_XCuO₄) perovskite photocatalysts were synthesized via a facile microwave-assisted combustion method. Comprehensive characterization revealed that the incorporation of Nd³⁺ ions into the La₂CuO₄ lattice significantly modified the structural, optical, and electronic properties of the material, collectively enhancing its photocatalytic degradation efficiency. Among the prepared compositions, La_1.75Nd_0.25CuO₄ (LNCO3) exhibited the most remarkable performance, achieving a Methyl Orange (MO) degradation efficiency of 93 % (k = 0.0191 min⁻¹), substantially higher than that of pristine La₂CuO₄ (72 %; k = 0.0088 min⁻¹). Kinetic analyses confirmed that the photodegradation process follows a pseudo-first-order model. Radical scavenging experiments and Electron Paramagnetic Resonance (EPR) analysis demonstrated that superoxide radicals (^•O₂⁻) and hydroxyl radicals (^•OH) were the predominant reactive oxygen species responsible for pollutant degradation. The photocatalyst also maintained excellent stability and reusability over six consecutive cycles without significant loss of activity. In addition to MO degradation, LNCO3 displayed superior antibacterial activity against Escherichia coli (E. coli) under visible-light irradiation, highlighting its dual functionality for chemical and biological contaminant removal. These findings underscore the potential of Nd-doped La₂CuO₄ as a robust photocatalyst for environmental remediation.

高效钙钛矿光催化剂的开发仍然是先进水处理技术研究的关键领域。本研究采用微波辅助燃烧法合成了掺钕La2CuO4 （La2-XNdXCuO4）钙钛矿光催化剂。综合表征表明，在La2CuO4晶格中加入Nd3+离子显著改变了材料的结构、光学和电子性能，共同提高了其光催化降解效率。在制备的组合物中，La1.75Nd0.25CuO4 （LNCO3）表现出最显著的性能，对甲基橙（MO）的降解效率为93% (k = 0.0191 min−1)，大大高于原始La2CuO4 （72%, k = 0.0088 min−1）。动力学分析证实了光降解过程遵循伪一阶模型。自由基清除实验和电子顺磁共振（EPR）分析表明，超氧自由基（•O2−）和羟基自由基（•OH）是污染物降解的主要活性氧。该光催化剂在连续六个循环中也保持了优异的稳定性和可重复使用性，而没有明显的活性损失。除了对MO的降解外，LNCO3在可见光照射下对大肠杆菌（E. coli）表现出优异的抗菌活性，突出了其去除化学和生物污染物的双重功能。这些发现强调了nd掺杂La2CuO4作为一种强大的环境修复光催化剂的潜力。

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引用次数: 0

Nucleus targeting-functionalized cell-membrane nanovesicles for intranasal delivery of therapeutic plasmid DNA into the brain for the treatment of glioblastoma 核靶向功能化细胞膜纳米囊泡用于治疗性质粒DNA的鼻内递送到脑内治疗胶质母细胞瘤

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-15 DOI: 10.1016/j.jiec.2025.07.034

Jae Young Park , Mincheol Son , Chuanyu Zhuang , Unchang Choi , Kangmin Park , Sung Bin Ahn , Minji Kang , Jihun Oh , Chowon Lee , Joon Sig Choi , Minhyung Lee

In the gene delivery to the glioblastoma, intranasal delivery has been developed for delivery of drugs into the brain. However, nose-to-brain delivery of plasmid DNA (pDNA) has been unsuccessful, due to the large size of pDNA and low efficiency of nuclear translocation in the cells. In this study, a novel pDNA delivery system with enhanced nuclear translocation function was developed using a cell-membrane (CM)/dexamethasone-conjugated polyethylenimine (PD) hybrid nanovesicle. PD and CM from C6 glioblastoma cells were mixed at a 2:1 wt ratio to produce hybrid-nanovesicle. Addition of negatively charged pDNA to hybrid nanovesicles formed the spherical shaped complexes. Confocal microscopy study showed that the pDNA/PD/CM nanovesicle-complex entered the nuclei of cells efficiently, due to the nuclear translocation effect of the glucocorticoid receptor on binding to dexamethasone. In orthotopic glioblastoma rat models, the pSV-HSVtk/PD/CM nanovesicle-complex had higher delivery efficiency than naked pSV-HSVtk and pSV-HSVtk/PD complex into the brain. As a result, pSV-HSVtk/PD/CM had higher apoptosis and lower Ki67 level than the other groups. Tumor size was effectively reduced by pSV-HSVtk/PD/CM, compared with the other groups. The results suggest that pDNA/PD/CM nanovesicle-complex may be an efficient intranasal delivery carrier of pDNA and may be useful for the treatment of glioblastoma.

在胶质母细胞瘤的基因递送中，鼻内递送已经发展到将药物递送到大脑。然而，由于质粒DNA （pDNA）的体积大，细胞内核易位效率低，因此，通过鼻子到脑传递质粒DNA （pDNA）一直没有成功。在这项研究中，利用细胞膜(CM)/地塞米松共轭聚乙烯亚胺（PD）杂化纳米囊泡开发了一种具有增强核易位功能的新型pDNA传递系统。将来自C6胶质母细胞瘤细胞的PD和CM以2:1的重量比混合，产生混合纳米囊泡。将带负电荷的pDNA添加到杂化纳米囊泡中形成球形配合物。共聚焦显微镜研究表明，由于糖皮质激素受体与地塞米松结合的核易位作用，pDNA/PD/CM纳米囊泡复合物能够有效进入细胞核。在原位胶质母细胞瘤大鼠模型中，pSV-HSVtk/PD/CM纳米囊泡复合物比裸pSV-HSVtk和pSV-HSVtk/PD复合物具有更高的脑内递送效率。结果表明，pSV-HSVtk/PD/CM组细胞凋亡率高于其他组，Ki67水平低于其他组。与其他组相比，pSV-HSVtk/PD/CM可有效减小肿瘤大小。提示pDNA/PD/CM纳米囊泡复合物可能是一种有效的pDNA鼻内递送载体，可用于胶质母细胞瘤的治疗。

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引用次数: 0

Multi-emission metal–organic framework (MOF)-based composites: A comprehensive review of synthesis strategies and luminescence applications 多发射金属有机骨架（MOF）基复合材料：合成策略及发光应用综述

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-13 DOI: 10.1016/j.jiec.2025.07.021

Ameneh Taghavi-Kahagh , Farid Behboodi-Sadabad , Mehdi Salami-Kalajahi

Due to a large specific surface area, high porosity, and adjustable internal surface properties, metal–organic frameworks (MOFs) have exhibited unmatched versatility in optical sensing applications. Their unique structures, combining inorganic metal ions or cluster nodes with organic linkers, enable the creation of “multiple photonic units” that offer diverse luminescence options suitable for customized sensing applications. Moreover, MOFs achieve ratiometric and multiplexing, and multimodality measurement capabilities by encapsulating luminescent guest molecules within their porous structures, which allows for greater adaptability and functionality in optical measurements. In this review, we have discussed a variety of MOF types, their structures, synthesis properties, mechanisms, and sensing applications. In contrast to previous reviews that overly rely on describing the general luminescent features or sensing capabilities of MOFs, this work is more holistic, covering multi-emission MOFs and extending its focus towards the entire spectrum of MOF-based sensors. This review highlights the versatility of sensing emission tunability achieved by single-, dual-, and multi-emission MOFs by meticulously analyzing their synthesis approaches and functional characteristics. In addition, it brings a new perspective by integrating comprehensive mechanisms of fluorescence enhancement and quenching with food contamination detection applications, where ratiometric sensing becomes pivotal. The addition of wearable sensing, SERS-active MOF nanosensors, and bio-labeling strategies expands the scope beyond conventional sensing platforms and traditional approaches, advancing this review as a prospective resource towards designing multifunctional sensors with integrated detection capabilities based on MOFs.

由于具有较大的比表面积，高孔隙率和可调节的内表面特性，金属有机框架（mof）在光学传感应用中表现出无与伦比的多功能性。它们独特的结构，将无机金属离子或簇节点与有机连接器相结合，能够创建“多光子单元”，提供适合定制传感应用的多种发光选择。此外，mof通过将发光客体分子封装在其多孔结构中来实现比率和多路复用以及多模态测量能力，从而在光学测量中具有更大的适应性和功能。本文综述了各种MOF类型、结构、合成性能、机理及其传感应用。与以往过分依赖于描述mof的一般发光特征或传感能力的综述相反，这项工作更加全面，涵盖了多发射mof，并将其重点扩展到基于mof的传感器的整个光谱。本文通过详细分析单发、双发和多发mof的合成方法和功能特性，强调了mof在传感发射可调性方面的多功能性。此外，它将荧光增强和猝灭的综合机制与食品污染检测应用相结合，带来了新的前景，其中比例传感成为关键。可穿戴传感、sers主动MOF纳米传感器和生物标记策略的增加扩展了传统传感平台和传统方法的范围，将本综述作为设计基于MOF的具有集成检测能力的多功能传感器的前瞻性资源。

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引用次数: 0

Advances in OFET-based NO2 detection: Molecular engineering, film morphology control, and device optimization 基于ofet的NO2检测进展：分子工程、膜形态控制和器件优化

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-13 DOI: 10.1016/j.jiec.2025.07.011

Kyuhyeon Ahn , Bong-Gi Kim , Yeongkwon Kang

Nitrogen dioxide (NO₂) is a toxic air pollutant with serious environmental and health implications, necessitating highly sensitive and selective detection technologies. Organic field-effect transistor (OFET)-based sensors have emerged as a promising platform due to the molecular tunability of organic semiconductors, low power consumption, and high detection precision. This review highlights recent progress in OFET-based NO₂ sensors, focusing on: (i) molecular engineering of conjugated backbones and side chains, (ii) microstructural tuning to facilitate gas diffusion, and (iii) device-level strategies involving dielectric modification and electrode architecture. While challenges remain in terms of long-term stability, selectivity, and scalable fabrication, integrated approaches across material, morphology, and device domains are expected to accelerate the practical deployment of OFET-based NO₂ sensors.

二氧化氮（NO2）是一种具有严重环境和健康影响的有毒空气污染物，需要高灵敏度和选择性的检测技术。基于有机场效应晶体管（OFET）的传感器由于有机半导体的分子可调性、低功耗和高检测精度而成为一个有前途的平台。本文综述了基于ofet的二氧化氮传感器的最新进展，重点是：(i)共轭骨架和侧链的分子工程，（ii）微结构调整以促进气体扩散，以及（iii）涉及介电修饰和电极结构的器件级策略。虽然在长期稳定性、选择性和可扩展制造方面仍然存在挑战，但跨材料、形态和器件领域的集成方法有望加速基于ofet的NO2传感器的实际部署。

引用次数: 0

Multiscale exploration of the oxidation and degradation behavior of styrene–butadiene–styrene (SBS) 苯乙烯-丁二烯-苯乙烯（SBS）氧化降解行为的多尺度探索

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-13 DOI: 10.1016/j.jiec.2025.07.032

Peixing Yang , Zhaohui Min , Zhiyong Shi , Fei Chen , Yanli Zhao , Saijin Yang , Haonan Chen , Wei Huang

The investigation into the oxidation mechanism of the Styrene-butadiene-styrene (SBS) modifier holds industrial and engineering practical value for guiding the recycling of SBS-modified asphalt pavements and mitigating aging effects. This study conducted a multi-scale analysis to examine the thermo-oxidative aging mechanism of SBS, systematically revealing the oxidative degradation pathway of SBS molecules under thermo-oxidative coupling by integrating density-functional theory (DFT) calculations with macroscopic experimental characterization. The degradation pathways and products of SBS were quantitatively resolved through DFT. The oxidation mechanism of SBS were analyzed using sample characterization tools such as fourier transform infrared spectroscopy, thermogravimetric (TG) analysis, gel permeation chromatography (GPC) and scanning electron microscopy (SEM). The oxidation of the double bond (27.6 Kcal/mol) in the PB segment was favored over that of α-H (48.3 Kcal/mol), while the oxidation of the benzene ring α-H (47.27 Kcal/mol) in the PS segment was preferred over that of β-H (49.23 Kcal/mol) in a competitive reaction mechanism. The primary degradation products included alcohols, aldehydes, and ketones. Surface morphology analysis reveals that oxidation of SBS smooths the surface; however, the native structure is severely damaged. Short-chain migration and filling result in a flat surface morphology, while native chain breakage leads to the collapse of the mechanical properties (Aging 6 h, molecular weight decreased by 81.6 %).

研究SBS改性剂的氧化机理，对指导SBS改性沥青路面的回收利用和减缓老化效果具有工业和工程实用价值。本研究通过多尺度分析考察SBS热氧化老化机理，通过密度泛函理论（DFT）计算与宏观实验表征相结合，系统揭示SBS分子在热氧化耦合下的氧化降解途径。通过DFT定量分析了SBS的降解途径和产物。采用傅立叶红外光谱、热重（TG）、凝胶渗透色谱（GPC）和扫描电镜（SEM）等表征手段对SBS的氧化机理进行了分析。PB段双键（27.6 Kcal/mol）的氧化倾向于α-H （48.3 Kcal/mol）的氧化，PS段苯环α-H （47.27 Kcal/mol）的氧化倾向于β-H （49.23 Kcal/mol）的氧化。初级降解产物包括醇类、醛类和酮类。表面形貌分析表明，SBS的氧化使表面光滑；然而，原有结构遭到严重破坏。短链迁移和填充导致表面形貌平坦，而原生链断裂导致力学性能崩溃（时效6 h，分子量下降81.6%）。

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引用次数: 0

Study on interfacial reaction between Al2O3-C / ZrO2-C submerged entry nozzle and molten steel with La-Ce alloy Al2O3-C / ZrO2-C浸入式入口喷嘴与La-Ce合金钢液界面反应研究

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-12 DOI: 10.1016/j.jiec.2025.07.031

Kaiwang Chen , Dongxue Wang , Lei Yuan , Tianpeng Wen , Qiang Gu , Guoqi Liu , Hongxia Li

The clogging of submerged entry nozzle (SEN) during continuous casting of rare earth steel has consistently been a primary factor affecting steel production and the service life of SEN. Designing refractory materials to prevent SEN clogging and erosion is a critical concern. In this paper, the interfacial reactions between Al₂O₃-C and ZrO₂-C SEN and La-Ce alloy were systematically studied, and the potential application of ZrO₂-C SEN in rare earth steel casting was investigated. Results showed that Al₂O₃-C SEN had a strong chemical reaction with La-Ce alloy, forming the initial clogging. On the contrary, the formation of the dense protective layer at the ZrO₂-C SEN interface hindered the reaction between the alloy and the nozzle, thereby inhibiting clogging. The formation of the protective layer is mainly related to the diffusion and reaction of fine Al₂O₃ particles inside the nozzle to the interface. Furthermore, due to the addition of excessive La-Ce alloy, the clogging formed at the interface was mainly REAlO₃. In actual production, the application of ZrO₂-C SEN can effectively inhibit clogging, improve rare earth yield and process stability.

稀土钢连铸过程中浸入式入口喷嘴的堵塞一直是影响钢铁生产和SEN使用寿命的主要因素，设计耐火材料以防止SEN堵塞和侵蚀是一个关键问题。本文系统地研究了Al2O3-C与ZrO2-C SEN与La-Ce合金的界面反应，并探讨了ZrO2-C SEN在稀土铸钢件中的潜在应用。结果表明：Al2O3-C SEN与La-Ce合金发生强烈的化学反应，形成初始堵塞；相反，在ZrO2-C SEN界面处形成致密的保护层，阻碍了合金与喷嘴之间的反应，从而抑制了堵塞。保护层的形成主要与喷嘴内细小的Al2O3颗粒向界面扩散反应有关。此外，由于过量的La-Ce合金的加入，在界面处形成的堵塞主要是REAlO3。在实际生产中，应用ZrO2-C SEN可以有效地抑制堵塞，提高稀土收率和工艺稳定性。

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引用次数: 0

Sustainable synthesis of nano-crystalline α-alumina from waste food packaging for efficient azithromycin removal 利用废弃食品包装可持续合成纳米晶α-氧化铝以高效去除阿奇霉素

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-11 DOI: 10.1016/j.jiec.2025.07.027

Raton Kumar Bishwas, Md. Ashraful Alam, Shirin Akter Jahan

Nanocrystalline α-alumina was successfully synthesized from waste aluminum food packaging (AFP) using a simple and novel method. This material was employed for the efficient removal of azithromycin (AZM) from aqueous systems. X-ray diffraction (XRD) analysis revealed a 99.93 % α-alumina phase with a hexagonal lattice structure. FTIR analysis showed the presence of –OH groups in diaspore but their absence in α-alumina. The zero-point charge (pHzpc) of α-alumina was 6.84, indicating its surface charge behavior. The synthesized α-alumina demonstrated high purity (99.93 %) and promising adsorption properties, with a moderate band gap of 5.07 eV and nanoscale absorbance characteristics. The hydrodynamic diameters of diaspore and α-alumina were 310.7 nm and 267.2 nm, respectively. The Transmission Electron Microscopy (TEM) reveals the irregular spherical shape of the particle with an average particle size of 60.53 nm. Adsorption studies demonstrated that AZM removal increased with contact time and adsorbent dosage but decreased with higher initial AZM concentration. The maximum adsorption capacity was 16.0691 mg/g at 25 °C and pH 10.0. Adsorption followed the Langmuir model, indicating monolayer coverage, while the pseudo-second-order kinetics suggest the rate depends on both the adsorbent and adsorbate. These results confirm that α-alumina synthesized from AFP is an effective adsorbent for AZM removal.

以废铝食品包装为原料，采用一种简单、新颖的方法成功合成了纳米晶α-氧化铝。该材料用于水溶液中阿奇霉素（AZM）的高效去除。x射线衍射（XRD）分析表明，其α-氧化铝相含量为99.93%，呈六边形晶格结构。FTIR分析表明-OH基团在一水硬石中存在，而在α-氧化铝中不存在。α-氧化铝的零点电荷（pHzpc）为6.84，表明其具有表面电荷行为。合成的α-氧化铝纯度高（99.93%），具有中等带隙（5.07 eV）和纳米级吸光度，具有良好的吸附性能。一水硬铝石和α-氧化铝的水动力直径分别为310.7 nm和267.2 nm。透射电子显微镜（TEM）观察到该颗粒呈不规则球形，平均粒径为60.53 nm。吸附研究表明，AZM去除率随接触时间和吸附剂用量的增加而增加，但随着初始AZM浓度的增加而降低。在25℃、pH 10.0条件下，最大吸附量为16.0691 mg/g。吸附遵循Langmuir模型，表明单层覆盖，而伪二级动力学表明吸附速率取决于吸附剂和吸附物。这些结果证实了AFP合成的α-氧化铝是一种去除AZM的有效吸附剂。

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引用次数: 0

Silver nanoparticles integrated SnO2/g-C3N4 nanocomposite as highly sensitive electrochemical sensor for ascorbic acid 银纳米粒子集成SnO2/g-C3N4纳米复合材料作为抗坏血酸的高灵敏度电化学传感器

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-11 DOI: 10.1016/j.jiec.2025.07.029

Kanagaraj Narayanan , Krishnan Senthil Murugan , Thillai Sivakumar Natarajan

A highly sensitive and selective electrochemical sensor, Ag NPs-SnO₂/g-C₃N₄ nanocomposite material was developed using a facile sol–gel ultrasonic hybrid technique, for ascorbic acid (AA) sensing. The electrocatalytic activity of Ag NPs-SnO₂/g-C₃N₄/GCE towards AA sensing was evaluated using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) analysis in 0.1 M phosphate buffer saline (PBS) at neutral pH. The Ag NPs-SnO₂/g-C₃N₄/GCE showed strong CV response towards AA with the lower potential of +0.32 V, which may be ascribed to irreversible oxidation of AA. The anodic current responses are directly related to increase in the AA concentration and scan rate. Furthermore, the Ag NPs-SnO₂/g-C₃N₄/GCE exhibited exceptional sensitivity, selectivity, repeatability, reproducibility, and stability for AA sensing in the existence of undeserved compounds. The DPV results demonstrated the excellent sensing performance resulting in high sensitivity of 39.65 μA μM⁻¹ cm⁻², the responses of current rises steadily with increasing AA concentration from 8 μM to 5.0 mM with correlation coefficient (R² = 0.99), the LOD (S/N = 3) and LOQ is found to be 0.47 ± 1.18 μM and 1.45 ± 3.60 μM at 95 % confidence interval (n = 3). Hence, the result conclude that nanocomposites are potential sensor system for AA under present experimental condition.

采用溶胶-凝胶超声杂交技术，研制了一种高灵敏度、高选择性的抗坏血酸传感器——Ag - NPs-SnO2/g-C3N4纳米复合材料。采用循环伏安法（CV）和差分脉冲伏安法（DPV）分析了Ag NPs-SnO2/g-C3N4/GCE在中性ph 0.1 M磷酸缓冲液（PBS）中对AA感应的电催化活性。Ag NPs-SnO2/g-C3N4/GCE对AA表现出强烈的CV响应，电位较低，为+0.32 V，这可能是由于AA的不可逆氧化引起的。阳极电流响应与AA浓度和扫描速率的增加直接相关。此外，Ag NPs-SnO2/g-C3N4/GCE对存在不存在的化合物的AA传感表现出优异的灵敏度、选择性、可重复性、再现性和稳定性。结果表明，DPV具有良好的传感性能，灵敏度高达39.65 μA μM−1 cm−2，电流响应随AA浓度的增加而稳步上升，相关系数为0.99 (R2 = 0.99), LOD （S/N = 3）和LOQ在95%置信区间（N = 3）分别为0.47±1.18 μM和1.45±3.60 μM。因此，在目前的实验条件下，纳米复合材料是一种有潜力的AA传感器系统。

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引用次数: 0

Influence of zeolite acidity on CO2 hydrogenation over iron-based ZSM-5 zeolite 沸石酸度对铁基ZSM-5沸石CO2加氢的影响

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-11 DOI: 10.1016/j.jiec.2025.07.028

Mohammed A. Sanhoob , Hwei Voon Lee , Joon Ching Juan , M Nasiruzzaman Shaikh , Mohammad M Hossain

Converting CO₂ into value-added chemicals is crucial for combating rising CO₂ levels and environmental impacts. Iron-based catalysts convert CO₂ to chemicals, but optimizing their fabrication strategy remains underexplored. Fe-impregnated nanosized ZSM-5 zeolite formulations with different preparation conditions (uncalcined UnC-, calcined C-, protonated CPC-series) and calcination temperatures (400, 600, and 800 °C) were prepared. Catalysts were characterized using XRD, FESEM, XRF, XPS, TPR, and TPD. Analysis showed Fe10%-ZSM-5 had higher XRD crystallinity for protonated sample compared to uncalcined and unprotonated zeolite, with sequential changes in chemical states and H₂ consumption as temperature rose to 900 °C·NH₃-TPD showed protonated zeolite enhanced overall acidity, generating major weak and strong acid sites. XRD and XPS revealed Fe mixed phases (Hematite/Maghemite) at low calcination temperature (<600 °C). This mixture creates synergistic effects enhancing thermal stability and reducibility for CO₂ hydrogenation. The 10 %-Fe-ZSM-5 (C-series) calcined at 600 °C achieved 19 % CO₂ conversion with 93 % CO selectivity and 6 % hydrocarbons, indicating Fe impregnation without zeolitic strong acidity favors CO generation. Protonation enhanced selectivity toward hydrocarbons, reaching 51 % using protonated zeolite (CPC-series) at 400 °C. The catalyst maintained activity and selectivity for 12 h in hydrogenation conditions.

将二氧化碳转化为增值化学品对于应对不断上升的二氧化碳水平和环境影响至关重要。铁基催化剂将二氧化碳转化为化学物质，但优化其制造策略仍有待探索。制备了不同制备条件（未煅烧UnC-、煅烧C-、质子化cpc -系列）和煅烧温度（400℃、600℃和800℃）的fe -浸渍纳米ZSM-5分子筛配方。采用XRD、FESEM、XRF、XPS、TPR和TPD对催化剂进行了表征。分析表明，与未煅烧和未煅烧的沸石相比，质子化样品的Fe10%-ZSM-5具有更高的XRD结晶度，随着温度升高至900℃，化学状态和H2消耗发生了顺序变化。NH3-TPD表明，质子化沸石的整体酸度增强，产生了主要的弱酸和强酸位点。在较低的煅烧温度（<600℃）下，XRD和XPS显示铁混合相（赤铁矿/磁赤铁矿）。这种混合物产生协同效应，增强了CO2加氢的热稳定性和还原性。在600℃下煅烧的10% -Fe-ZSM-5 （C系列）的CO2转化率为19%，CO选择性为93%，碳氢化合物含量为6%，说明没有沸石强酸性的Fe浸染有利于CO的生成。质子化提高了对碳氢化合物的选择性，使用质子化沸石（cpc系列）在400°C时达到51%。催化剂在加氢条件下保持12 h的活性和选择性。

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引用次数: 0

A high-performance fluorescent deferasirox-functionalized metal-organic framework sensor with spherical morphology and controlled porosity derived from recycled PET for aqueous cadmium sensing 一种高性能荧光去铁氧化铁功能化金属有机框架传感器，具有球形形态和可控孔隙率，源自回收PET，用于水镉传感

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-07-10 DOI: 10.1016/j.jiec.2025.07.023

Fatemeh Mehdipour , Mostafa Khajeh , Ali Reza Oveisi , Saba Daliran

This work presents the development of a novel fluorescent deferasirox-functionalized metal–organic framework (F-MOF) with spherical morphology and controlled porosity, synthesized through an environmentally conscious approach using polyethylene terephthalate (PET) waste as a precursor. The MOF was functionalized in situ with deferasirox to create a highly sensitive and selective sensor for cadmium detection in aqueous environments. Comprehensive characterization confirmed preserved crystallinity through PXRD analysis, with optimal performance achieved at 0.2 equivalents of drug loading (among tested loadings of 0.2, 0.5, and 1.0 eq). SEM imaging revealed uniform spherical morphology with particle diameters ranging from 50 to 250 nm, while EDS analysis confirmed the expected elemental composition of 56.73 atomic percent carbon and 2.44 atomic percent zirconium. The material showed controlled porosity reduction in BET measurements, with surface area decreasing systematically from 400 to 60 m²/g as drug loading increased. Furthermore, the TGA analysis demonstrated excellent thermal stability with framework integrity maintained up to 360 °C. The material showed notable adsorption capacity (476.2 mg/g) and retained structural stability under environmental conditions. The MOF has a high quantum yield (35.2 %). The sensor revealed excellent selectivity in the presence of competing ions and presented effective performance in real water samples. This effort presents a practical approach to environmental sensing while addressing the critical need for sensitive heavy metal detection in water systems.

这项工作提出了一种新的荧光去铁氧化酶功能化金属有机框架（F-MOF）的发展，具有球形形态和可控孔隙率，通过一种环保的方法合成，利用聚对苯二甲酸乙二醇酯（PET）废物作为前体。用去铁氧化铁原位功能化MOF，创建了一个高灵敏度和选择性的水环境中镉检测传感器。综合表征通过PXRD分析证实了保留的结晶度，在0.2当量载药量（在测试的0.2、0.5和1.0当量载药量中）下达到最佳性能。扫描电镜（SEM）成像结果显示其颗粒直径在50 ~ 250 nm之间，呈均匀的球形，能谱分析证实其元素组成为56.73%的碳和2.44%的锆。在BET测量中，该材料显示出可控的孔隙率降低，随着药物负荷的增加，其表面积从400 m2/g系统地减少到60 m2/g。此外，TGA分析显示了优异的热稳定性，框架完整性保持到360°C。该材料具有显著的吸附能力（476.2 mg/g），并在环境条件下保持了结构稳定性。MOF具有较高的量子产率（35.2%）。该传感器在竞争离子存在下表现出优异的选择性，在实际水样中表现出有效的性能。这项工作提出了一种实用的方法来环境传感，同时解决了水系统中敏感重金属检测的关键需求。

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