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

A review of binder-free electrodes for advanced supercapacitors 先进超级电容器无粘结剂电极综述

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.06.025

Ningshuang Zhang , Mengya Wang , Yin Quan , Xiaohua Li , Xinyi Hu , JingXuan Yan , Yinong Wang , Mengzhen Sun , Shiyou Li

Supercapacitors are high-performance electrochemical energy storage devices with high power density, long cycle life, and rapid charge and discharge capabilities. However, in the conventional electrode fabrication process, the addition of binders without conductivity and electrochemical activity reduces the mass of active materials and increases resistance in the electrode, which compromises its electrochemical performance. Therefore, the binder-free electrode is an effective method to enhance the electrochemical performance and energy density of electrodes. The different fabrication technologies for binder-free electrodes have been explored in detail, especially focusing on surface growth on current collectors, self-assembly techniques, and the new technological methods. The design of electrochemically active materials, including carbon, metal compounds, and conductive polymers have been emphasized, along with the optimization of processes and the enhancement of performance, interface engineering and improvements in electrode functionality, the utilization of multifunctional performance materials, and the design and optimization strategies grounded in theoretical simulations. Depending on the actual situation, binder-free electrodes can increase energy density and specific capacitance 10% to 30% approximately. Finally, the advantages of binder-free electrode technology in supercapacitors and other energy storage fields are introduced, further exploring future research directions and the potential breakthroughs and challenges that binder-free electrode technology may bring.

超级电容器是一种高性能电化学储能装置，具有功率密度高、循环寿命长、充放电速度快等特点。然而，在传统的电极制造工艺中，添加无导电性和电化学活性的粘结剂会减少活性材料的质量，增加电极的电阻，从而影响其电化学性能。因此，无粘结剂电极是提高电极电化学性能和能量密度的有效方法。人们对无粘结剂电极的不同制造技术进行了详细的探讨，特别是对集流器表面生长、自组装技术和新技术方法进行了重点研究。此外，还强调了电化学活性材料（包括碳、金属化合物和导电聚合物）的设计、工艺优化和性能提升、界面工程和电极功能改进、多功能性能材料的利用，以及基于理论模拟的设计和优化策略。根据实际情况，无粘结剂电极可将能量密度和比电容提高约 10%至 30%。最后，介绍了无粘结剂电极技术在超级电容器和其他储能领域的优势，进一步探讨了无粘结剂电极技术未来的研究方向以及可能带来的突破和挑战。

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引用次数: 0

Impact of solvent temperature on graphite shear exfoliation efficiency 溶剂温度对石墨剪切剥离效率的影响

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.06.028

Jae Gu Jung, Jin Hee Kim, Juhyung Moon, Yu Jin Kim, Junhyeong Lee, Tae Hoon Lee, Ho Bum Park

Liquid phase exfoliation (LPE) of graphite is a promising pathway for graphene flakes (GF) due to its scalability and cost-effectiveness. However, the method has significant limits at the industrial scale, such as low yield of GF and long processing times. In this study, we investigate the effect of organic solvents such as N-methyl-2-pyrrolidone (NMP) and methyl-5-(dimethylamino)-2-methyl-5-oxopentanoate (PolarClean) temperature on shear-induced exfoliation. The GF concentration was successfully obtained 0.62 mg/ml in NMP and 0.68 mg/ml in PolarClean within just 2 h at 263 K, without surfactants or any additional additives. These results revealed the improved exfoliation efficiency due to changes in solvent polarity, surface tension, and dispersion stability with increased viscosity. In addition, we investigate the optimization conditions required for liter-scale shear-induced exfoliation of graphite in PolarClean. As-prepared GF has significant potential as an effective nanofiller for enhancing the mechanical strength of commercial polymers. This study not only advances the understanding of the LPE mechanisms but also paves the way for the industrial application of this method in the green synthesis of graphene-based nanocomposites.

石墨的液相剥离（LPE）具有可扩展性和成本效益，是一种很有前景的石墨烯薄片（GF）制备方法。然而，这种方法在工业规模上有很大的局限性，例如石墨烯产量低、处理时间长。在本研究中，我们研究了 N-甲基-2-吡咯烷酮（NMP）和 5-(二甲基氨基)-2-甲基-5-氧代戊酸甲酯（PolarClean）等有机溶剂的温度对剪切诱导剥离的影响。在 263 K 的温度下，仅用 2 小时就成功地在 NMP 和 PolarClean 中分别获得了 0.62 毫克/毫升和 0.68 毫克/毫升的 GF 浓度，且无需使用表面活性剂或任何其他添加剂。这些结果表明，随着粘度的增加，溶剂极性、表面张力和分散稳定性的变化提高了剥离效率。此外，我们还研究了在 PolarClean 中进行升规模剪切诱导石墨剥离所需的优化条件。制备的 GF 作为一种有效的纳米填料，在增强商用聚合物的机械强度方面具有巨大潜力。这项研究不仅加深了人们对 LPE 机理的理解，还为该方法在石墨烯基纳米复合材料绿色合成中的工业应用铺平了道路。

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引用次数: 0

Adsorption and separation of lead ions in phosphoric acid by co-doped carbon nanotubes with sulfur, oxygen, and manganese 硫、氧和锰共掺杂碳纳米管对磷酸中铅离子的吸附和分离

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.06.029

Gang Cheng , Xin Zhou , Chongyu Du , Guotao Hu , Qian Lin , Hongyan Pan

The purpose of this study was to prepare a novel and efficient adsorbent for the removal of trace Pb(II) from phosphoric acid. Manganese oxide/sulfur-oxygen doped carbon nanotube composites (CNTs-S-O-Mn) were prepared from multi-walled carbon nanotubes modified with nitric acid, mercaptoacetic acid, acetic anhydride, concentrated sulfuric acid and potassium permanganate. Characterisation revealed that CNTs-S-O-Mn contained hydroxyl, sulphonate groups, MnO and Mn₃O₄. At 298 K, 15.362 mg·L^-1 initial concentration of lead ions, and 18.4 % phosphoric acid concentration, the adsorption capacity of the composites for lead ions was 38.65 mg·g⁻¹, which was higher than that of the unmodified CNTs, 8.04 mg·g⁻¹. The adsorption kinetic data at 298 K conformed to the quasi-second-order kinetic equation, R² = 0.997; 298, adsorption isotherms at 308 and 318 K conformed to the Langmuir equation, R² = 0.990–––0.991. The adsorption capacity increased with decreasing phosphoric acid concentration. In this system, the adsorption is affected by a certain concentration of lead ions. Adsorption occurs via chemisorption and is exothermic. Sulfonic acid groups and hydroxyl groups on manganese oxides play an important role in the adsorption of Pb (II) through surface complexation with Pb (II). These results indicate that the removal of trace Pb (II) from phosphoric acid by modified carbon nanotubes is feasible, revealing a new use of carbon nanotubes for phosphoric acid purification.

本研究旨在制备一种新型高效吸附剂，用于去除磷酸中的痕量铅（II）。用硝酸、巯基乙酸、乙酸酐、浓硫酸和高锰酸钾修饰的多壁碳纳米管制备了氧化锰/硫氧掺杂碳纳米管复合材料（CNTs-S-O-Mn）。表征结果表明，CNTs-S-O-Mn 含有羟基、磺酸基、氧化锰和氧化锰。在 298 K、铅离子初始浓度为 15.362 mg-L 和磷酸浓度为 18.4 % 的条件下，复合材料对铅离子的吸附容量为 38.65 mg-g，高于未改性 CNT 的 8.04 mg-g。298 K 时的吸附动力学数据符合准二阶动力学方程，R = 0.997；298、308 和 318 K 时的吸附等温线符合 Langmuir 方程，R = 0.990--0.991。吸附容量随磷酸浓度的降低而增加。在该体系中，吸附受一定浓度的铅离子影响。吸附是通过化学吸附发生的，并且是放热的。锰氧化物上的磺酸基团和羟基通过与铅（II）的表面络合，在吸附铅（II）的过程中发挥了重要作用。这些结果表明，用改性碳纳米管去除磷酸中的痕量铅（II）是可行的，揭示了碳纳米管在磷酸净化中的新用途。

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引用次数: 0

Polypyrrole@Pd solar-thermal catalyst for eco-friendly and scalable multiphasic Suzuki coupling reactions 用于生态友好型可扩展多相铃木偶联反应的聚吡咯@钯太阳能热催化剂

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.06.035

Seungbeom Park , Dongchan Lee , Kangjoo Lee, Sun-Joon Min, Kwang-Suk Jang

Solar-thermal materials enable the heating of reaction solutions in organic reactions without consuming fossil fuels or electricity. In this study, nanostructured polypyrole@Pd was utilized with solar-thermal, catalytic, and Pickering emulsifier functionalities to successfully demonstrate eco-friendly and scalable Suzuki coupling reactions. Pd-catalyzed multiphasic Suzuki coupling reactions were accelerated with high conversions through solar-thermal heating and the formation of Pickering emulsions in a phase-separated, highly concentrated reaction mixture using polypyrole@Pd. Increasing the interfacial area by forming a Pickering emulsion facilitates mass transfer between the two miscible liquid phases, which is crucial for multiphasic reactions. Gram-scale synthesis under solar illumination over an area of 3.14 cm² was successfully achieved, and the multiple usability of polypyrrole@Pd was demonstrated over 20 cycles.

太阳能热材料可在不消耗化石燃料或电力的情况下加热有机反应中的反应溶液。在这项研究中，纳米结构的聚吡咯@Pd 具有日热、催化和皮克林乳化剂功能，成功地演示了环保和可扩展的铃木偶联反应。通过利用聚吡咯@Pd 在相分离的高浓度反应混合物中进行太阳热能加热并形成皮克林乳化剂，Pd 催化的多相铃木偶联反应得以加速并实现高转化率。通过形成皮克林乳液来增加界面面积，有利于两种混溶液相之间的传质，这对多相反应至关重要。在太阳光照射下，在 3.14 厘米的面积上成功实现了克级合成，并证明了聚吡咯@钯在 20 个循环中的多重可用性。

引用次数: 0

Green synthesis of graphene-based derivatives from Ulva lactuca extract: Characterization and biomedical applications 从莼菜提取物中绿色合成石墨烯基衍生物：表征与生物医学应用

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.07.016

Mohammed Ali Alshehri , Chellasamy Panneerselvam

Graphene-based materials have been extensively researched due to its biocompatibility, unique conjugated structure, and relatively low cost in the realm of biology. Graphene is increasingly being explored for many medical uses, including as DNA-hybridization devices, cancer treatment, and medicine administration. Furthermore, it exhibits substantial potential in several fields of biological applications, such as antibacterial interventions, therapy, and biosensing. The synthesis of GO and rGO was achieved in this work for the first-time using macroalgae, Ulva lactuca as a reducing agent. The antibacterial activity of graphene-based derivatives was evaluated against two different human pathogenic bacteria. Bacterial growth inhibition increased in proportion to the higher concentration. Higher concentration of nanosheets could enhance the cellular enzyme activity. Different scavenging assays are adapted to assess the antioxidant activity of GO and rGO. Significant in-vitro antioxidant activity was observed in a concentration-dependent manner. Furthermore, the antitumor activity of synthesized nanosheets was tested against human breast cancer cells (MCF-7) at various concentrations. The test results show that the graphene derivatives in the MCF-7 cell line exhibit an increase in apoptotic behaviour as sample concentration rises. This study could offer novel insights into the antibacterial, antioxidant, and anticancer activities of the green synthesized graphene-based derivatives.

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引用次数: 0

Enhanced the electrochemical performance of Ni-doped α-MnO2 prepared with one-pot process for supercapacitors 提高一锅法制备的掺镍 α-MnO2 在超级电容器中的电化学性能

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.06.041

Bengang Tan , Nali Chen , Lizhi Huang , Xin Gao , Lin Tan , Huixia Feng

Poor capacitive behavior caused by low electronic conductivity and slow reaction kinetics is the main obstacle faced by the MnO₂ electrode materials in current supercapacitors. Herein, the influence of Ni doping on the capacitive behavior of α-MnO₂ synthesized by a low-cost and one-pot chemical coprecipitation method was investigated. During the doping process, the amount of Ni was increased from 0.05 mmol to 0.45 mmol in steps of 0.1 mmol. The structure and chemical composition of Ni-doped MnO₂ (MnO₂-Ni) were characterized by XRD, FTIR, SEM, EDS, and XPS. Comprehensive studies show that no change in the crystal phase structure of MnO₂, while the decrease in the nanoparticle size and the increase in electronic conductivity by Ni doping, which improve the capacitive behavior of α-MnO₂. With specific capacitance values increasing with increasing amounts of Ni up to a certain limit 0.25 mmol, the specific capacitance of 325.8 F/g was given by MnO₂-Ni electrode at a current density of 0.5 A/g, which was nearly 1.72 times that of MnO₂ electrode of 189.47 F/g. Moreover, the MnO₂-Ni electrode showed excellent capacitance retention (112%) than the MnO₂ electrode (109.5%) after 3000 cycles.

电子电导率低和反应动力学缓慢导致电容行为不佳是目前超级电容器中氧化锰电极材料面临的主要障碍。本文研究了掺杂镍对低成本一锅化学共沉淀法合成的α-MnO电容行为的影响。在掺杂过程中，镍的量以 0.1 mmol 为单位从 0.05 mmol 增加到 0.45 mmol。通过 XRD、FTIR、SEM、EDS 和 XPS 对掺杂镍的氧化锰（MnO-Ni）的结构和化学成分进行了表征。综合研究表明，MnO 的晶相结构没有发生变化，而掺杂镍后纳米粒子尺寸减小，电子电导率增加，从而改善了 α-MnO 的电容行为。随着掺杂量的增加，比电容值也随之增加，最高可达 0.25 mmol，在电流密度为 0.5 A/g 时，MnO-Ni 电极的比电容为 325.8 F/g，是 MnO 电极 189.47 F/g 的近 1.72 倍。此外，MnO-Ni 电极在 3000 次循环后的电容保持率（112%）比 MnO 电极（109.5%）高。

{"title":"Enhanced the electrochemical performance of Ni-doped α-MnO2 prepared with one-pot process for supercapacitors","authors":"Bengang Tan , Nali Chen , Lizhi Huang , Xin Gao , Lin Tan , Huixia Feng","doi":"10.1016/j.jiec.2024.06.041","DOIUrl":"10.1016/j.jiec.2024.06.041","url":null,"abstract":"<div><div>Poor capacitive behavior caused by low electronic conductivity and slow reaction kinetics is the main obstacle faced by the MnO<sub>2</sub><span> electrode materials<span> in current supercapacitors. Herein, the influence of Ni doping on the capacitive behavior of α-MnO</span></span><sub>2</sub><span> synthesized by a low-cost and one-pot chemical coprecipitation<span> method was investigated. During the doping process, the amount of Ni was increased from 0.05 mmol to 0.45 mmol in steps of 0.1 mmol. The structure and chemical composition of Ni-doped MnO</span></span><sub>2</sub> (MnO<sub>2</sub><span>-Ni) were characterized by XRD<span><span>, FTIR<span>, SEM, EDS, and </span></span>XPS. Comprehensive studies show that no change in the crystal phase structure of MnO</span></span><sub>2</sub><span>, while the decrease in the nanoparticle size and the increase in electronic conductivity by Ni doping, which improve the capacitive behavior of α-MnO</span><sub>2</sub>. With specific capacitance values increasing with increasing amounts of Ni up to a certain limit 0.25 mmol, the specific capacitance of 325.8 F/g was given by MnO<sub>2</sub><span>-Ni electrode at a current density of 0.5 A/g, which was nearly 1.72 times that of MnO</span><sub>2</sub> electrode of 189.47 F/g. Moreover, the MnO<sub>2</sub>-Ni electrode showed excellent capacitance retention (112%) than the MnO<sub>2</sub> electrode (109.5%) after 3000 cycles.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 319-327"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569151","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

In vivo self-assembly of an intact functional cage protein: Intracellular generation of chimeric ferritins without disassembly-involved damage 在体内自组装完整的功能笼蛋白：在细胞内生成嵌合铁蛋白而不会造成分解损伤

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.06.040

Koung Hee Kim , Mi-Ran Ki , Thi Khoa My Nguyen , Ki Ha Min , Seung Pil Pack

Ferritin (Fn) is an attractive nano-biomaterial with a hollow structure. Functional chimeric cage-protein Fns (chimera-Fn) can be designed by combining two different monomer subunits. However, unavoidable damage is induced by the severe disassembly conditions required for preparing the Fn monomer. Here, a biocompatible method using a designed dual-expression vector to obtain chimera-Fns without a damage-inducing process is described. Fn monomer and silica-forming peptide (Kpt)-fused Fn monomer are expressed simultaneously and assembled within host-cells to form chimera-Fn of Kpt. Characteristic analysis showed that the chimera-Fns obtained intracellularly were composed of the two monomers in a ratio of 1:1. Morphological and functional analyses determined that the intracellularly-generated chimera-Fns had more intact forms and bioactive functions compared with those produced by chemical-involved disassembly and reassembly. This is the first report about the in vivo self-assembly of chimera-Fn with intact function and hold promise in designing functional templates for various nanomaterial preparations.

铁蛋白（Fn）是一种具有吸引力的中空结构纳米生物材料。通过结合两种不同的单体亚基，可以设计出功能性嵌合笼蛋白 Fns（嵌合 Fn）。然而，制备 Fn 单体所需的苛刻分解条件会造成不可避免的损伤。本文介绍了一种使用设计的双表达载体获得嵌合 Fns 的生物相容性方法，该方法不需要诱发损伤的过程。Fn单体和融合了硅形成肽（Kpt）的Fn单体同时表达，并在宿主细胞内组装成Kpt的嵌合体-Fn。特征分析表明，细胞内获得的嵌合-Fns由两种单体以1:1的比例组成。形态学和功能学分析表明，细胞内产生的嵌合体-Fns与化学分解和重新组装产生的嵌合体-Fns相比，具有更完整的形态和生物活性功能。这是首次报道具有完整功能的嵌合-Fn的自组装，有望为各种纳米材料制备设计功能模板。

{"title":"In vivo self-assembly of an intact functional cage protein: Intracellular generation of chimeric ferritins without disassembly-involved damage","authors":"Koung Hee Kim , Mi-Ran Ki , Thi Khoa My Nguyen , Ki Ha Min , Seung Pil Pack","doi":"10.1016/j.jiec.2024.06.040","DOIUrl":"10.1016/j.jiec.2024.06.040","url":null,"abstract":"<div><div><span>Ferritin<span> (Fn) is an attractive nano-biomaterial with a hollow structure. Functional chimeric cage-protein Fns (chimera-Fn) can be designed by combining two different monomer<span> subunits. However, unavoidable damage is induced by the severe disassembly conditions required for preparing the Fn monomer<span>. Here, a biocompatible method using a designed dual-expression vector to obtain chimera-Fns without a damage-inducing process is described. Fn monomer and silica-forming peptide (Kpt)-fused Fn monomer are expressed simultaneously and assembled within host-cells to form chimera-Fn of Kpt. Characteristic analysis showed that the chimera-Fns obtained intracellularly were composed of the two monomers in a ratio of 1:1. Morphological and functional analyses determined that the intracellularly-generated chimera-Fns had more intact forms and bioactive functions compared with those produced by chemical-involved disassembly and reassembly. This is the first report about the </span></span></span></span><em>in vivo</em><span><span> self-assembly of chimera-Fn with intact function and hold promise in designing functional templates for various </span>nanomaterial preparations.</span></div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 67-71"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569152","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

Unveiling the swelling behavior of κ-carrageenan hydrogels: Influence of composition and physiological environment on drug delivery potential 揭示κ-卡拉胶水凝胶的溶胀行为：成分和生理环境对药物输送潜力的影响

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.06.032

Emad Mozaffari , Bahareh Tanhaei , Maryam Khajenoori , Saeedeh Movaghar Khoshkho

This study aims to develop a biodegradable hydrogel wound dressing film based on carrageenan and agar loaded with tetracycline (TC), which exhibits high antibacterial properties and accelerates wound healing. The swelling behavior of κ-carrageenan/agar and tetracycline-loaded hydrogel films was examined, with a focus on the hydrogel’s efficacy in various physiological fluids, as well as the effects of polysaccharide ratio, cross-linker concentration, and surfactant concentration. The results revealed that the polysaccharide ratio significantly influenced the hydrogel swelling capacity of hydrogel, and a 1:1 ratio of agar to κ-carrageenan achieved the highest swelling degree of 1386 %. Addition of KCl, as a cross-linker, increased swelling capacity to 1713 %. Furthermore, surfactant concentration also influenced swelling behavior, and higher concentrations resulted in an increase in hydrophilicity and swelling. Hydrogel swelling performance varied across physiological fluids, with the highest and lowest swellings observed in deionized water (DIW) and simulated wound fluid (SWF), respectively. The swelling process in DIW and phosphate buffered saline (PBS) exhibited second-order kinetics, whereas non-Fickian diffusion mechanisms were observed in SWF. The drug release of the κC/AG/TC hydrogel film was controlled by its swelling capacity and the pH of medium. The hydrogels’ mechanical properties, antibacterial activity, and water vapor permeability were also investigated.

本研究旨在开发一种基于卡拉胶和琼脂并负载四环素（TC）的可生物降解水凝胶伤口敷料薄膜，该薄膜具有很强的抗菌性能并能加速伤口愈合。研究了κ-卡拉胶/琼脂和负载四环素的水凝胶薄膜的膨胀行为，重点考察了水凝胶在各种生理液体中的功效，以及多糖比例、交联剂浓度和表面活性剂浓度的影响。结果表明，多糖比例对水凝胶的溶胀能力有显著影响，琼脂与κ-卡拉胶的比例为 1:1，溶胀度最高，达到 1386%。加入氯化钾作为交联剂后，溶胀能力提高到 1713%。此外，表面活性剂的浓度也会影响溶胀行为，浓度越高，亲水性和溶胀性越强。水凝胶在不同生理液体中的溶胀性能各不相同，在去离子水（DIW）和模拟伤口液（SWF）中分别观察到最高和最低的溶胀。在去离子水和磷酸盐缓冲盐水（PBS）中的溶胀过程表现出二阶动力学，而在 SWF 中则观察到非菲克扩散机制。κC/AG/TC水凝胶薄膜的药物释放受其溶胀能力和介质pH值的控制。此外，还研究了水凝胶的机械性能、抗菌活性和水蒸气渗透性。

{"title":"Unveiling the swelling behavior of κ-carrageenan hydrogels: Influence of composition and physiological environment on drug delivery potential","authors":"Emad Mozaffari , Bahareh Tanhaei , Maryam Khajenoori , Saeedeh Movaghar Khoshkho","doi":"10.1016/j.jiec.2024.06.032","DOIUrl":"10.1016/j.jiec.2024.06.032","url":null,"abstract":"<div><div><span><span>This study aims to develop a biodegradable hydrogel wound<span><span> dressing film based on carrageenan and agar loaded with </span>tetracycline<span><span><span> (TC), which exhibits high antibacterial properties and accelerates wound healing. The swelling behavior of κ-carrageenan/agar and tetracycline-loaded hydrogel films was examined, with a focus on the hydrogel’s efficacy in various physiological fluids, as well as the effects of </span>polysaccharide<span><span> ratio, cross-linker concentration, and surfactant concentration. The results revealed that the </span>polysaccharide ratio significantly influenced the hydrogel swelling capacity of hydrogel, and a 1:1 ratio of agar to κ-carrageenan achieved the highest swelling degree of 1386 %. Addition of KCl, as a cross-linker, increased swelling capacity to 1713 %. Furthermore, surfactant concentration also influenced swelling behavior, and higher concentrations resulted in an increase in hydrophilicity and swelling. Hydrogel swelling performance varied across physiological fluids, with the highest and lowest swellings observed in </span></span>deionized water<span> (DIW) and simulated wound fluid (SWF), respectively. The swelling process in DIW and phosphate buffered saline (PBS) exhibited second-order kinetics, whereas non-Fickian diffusion mechanisms were observed in SWF. The drug release of the κC/AG/TC hydrogel film was controlled by its swelling capacity and the pH of medium. The hydrogels’ mechanical properties, </span></span></span></span>antibacterial activity, and </span>water vapor permeability were also investigated.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 217-227"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569155","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

Investigating the catalytic performance of polyoxometalate immobilized on magnetic chitosan in the oxidative desulfurization process 研究固定在磁性壳聚糖上的聚氧化金属在氧化脱硫过程中的催化性能

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.07.009

Somayeh Gooneh-Farahani, Mansoor Anbia

In this study, two types of polyoxometalate, one of Keggin type (PMo₆W₆O₄₀) and the other of Dawson type (H₁₁P₂W₁₃V₅O₆₂), were synthesized and fixed on chitosan with magnetic properties. The performance of synthesized catalysts was evaluated on the efficiency of removing aromatic sulfur compounds from the fuel model by the oxidative desulfurization method. Factors affecting the oxidation of sulfur compounds, such as reaction temperature, catalyst dosage, reaction time, and the ratio of oxidant to sulfur, were investigated to find the optimal conditions. The presence of Fe₃O₄ magnetic nanoparticles in the catalyst leads to the ease of separation from the petroleum model. The magnet-separated catalyst could be recycled for 5 catalytic cycles without significantly reducing removal efficiency.

引用次数: 0

Bi-doped g-C3N4/Bi2WO6 ternary composites for superior photocatalytic degradation of reactive orange 16 under visible light irradiation 双掺杂 g-C3N4/Bi2WO6 三元复合材料在可见光照射下对活性橙 16 的光催化降解效果更佳

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry

Pub Date : 2025-01-25 DOI: 10.1016/j.jiec.2024.07.007

Priti Rohilla , Bonamali Pal , Raj Kumar Das

Because of unrestricted disposal, the concentration of reactive dyes in wastewater is gradually increasing. Owing to their eco-toxicity their removal becomes so crucial. In this regard, Bi(0)-doped g-C₃N₄/Bi₂WO₆ (g-C₃N₄/Bi@Bi₂WO₆) nanocomposites were prepared by wet impregnation followed by calcination. Remarkably, the Bi(0) doping occurs concertedly during the preparation of Bi₂WO₆ without the addition of any extra reducing agent. The efficacy of the photocatalyst for eliminating reactive orange 16 was evaluated under visible light irradiation. XRD, FESEM, HRTEM, DRS, XPS, BET, etc., were employed to characterize these hybrids. The presence of Bi(0) was confirmed by HRTEM and XPS. Increasing the g-C₃N₄ content enhances the specific surface and reduces the charge transfer resistance. Among the various photocatalysts, the 20 wt% g-C₃N₄/Bi@Bi₂WO₆ hybrid owned the highest degradation efficiency of 89 % after 300 min of reaction time. The controlled experiments confirm the participation of holes and superoxide anions during the reactions. The various reaction intermediates were detected by HRMS providing the necessary evidence about the mechanism. The heterostructure possesses excellent reusability and stability. Due to enhanced catalytic activity, high stability, and ease of synthesis, the reported composite can be considered as a promising catalyst for the degradation of pollutants.

{"title":"Bi-doped g-C3N4/Bi2WO6 ternary composites for superior photocatalytic degradation of reactive orange 16 under visible light irradiation","authors":"Priti Rohilla , Bonamali Pal , Raj Kumar Das","doi":"10.1016/j.jiec.2024.07.007","DOIUrl":"10.1016/j.jiec.2024.07.007","url":null,"abstract":"<div><div>Because of unrestricted disposal, the concentration of reactive dyes in wastewater is gradually increasing. Owing to their eco-toxicity their removal becomes so crucial. In this regard, Bi(0)-doped g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub> (g-C<sub>3</sub>N<sub>4</sub>/Bi@Bi<sub>2</sub>WO<sub>6</sub>) nanocomposites were prepared by wet impregnation followed by calcination. Remarkably, the Bi(0) doping occurs concertedly during the preparation of Bi<sub>2</sub>WO<sub>6</sub> without the addition of any extra reducing agent. The efficacy of the photocatalyst for eliminating reactive orange 16 was evaluated under visible light irradiation. XRD, FESEM, HRTEM, DRS, XPS, BET, etc., were employed to characterize these hybrids. The presence of Bi(0) was confirmed by HRTEM and XPS. Increasing the g-C<sub>3</sub>N<sub>4</sub> content enhances the specific surface and reduces the charge transfer resistance. Among the various photocatalysts, the 20 wt% g-C<sub>3</sub>N<sub>4</sub>/Bi@Bi<sub>2</sub>WO<sub>6</sub> hybrid owned the highest degradation efficiency of 89 % after 300 min of reaction time. The controlled experiments confirm the participation of holes and superoxide anions during the reactions. The various reaction intermediates were detected by HRMS providing the necessary evidence about the mechanism. The heterostructure possesses excellent reusability and stability. Due to enhanced catalytic activity, high stability, and ease of synthesis, the reported composite can be considered as a promising catalyst for the degradation of pollutants.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 456-467"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141696972","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