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Interfacial Anchoring Effect Enables a Stable and High-Areal-Capacity Silicon/Carbon Composite Anode 界面锚定效应实现了稳定的高面积容量硅/碳复合阳极
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-04 DOI: 10.1021/acssuschemeng.5c13091
Yipeng Sun, Jinjin Ma, Xiaoting Lin, Haoqi Ren, Weihan Li, Changhong Wang, Tsun-Kong Sham, Xueliang Sun
Silicon (Si) has been widely accepted as a promising anode material owing to its high theoretical capacity (3590 mAh g–1) and abundance. Nevertheless, its practical application in next-generation batteries has long been hindered by several inherent challenges, including an unstable solid-electrolyte interphase (SEI), large volume changes, and low electrical conductivity. Herein, a facile and effective chemical route is proposed to construct a functional organic molecule that could constrain the framework and tune the interfacial properties of Si/C electrodes. Superior electrochemical performance with high anode material loading (∼8.0 mg cm–2) and high areal capacity (above 3.0 mAh cm–2) is achieved for the Si/C anode in terms of excellent cycling stability. A unique interfacial anchoring mechanism is found that plays a major role in effectively alleviating the huge volume expansion and maintaining the integrity of the Si/C electrode. Moreover, an investigation of the surface chemistry confirms that the constructed molecule can improve the stability of the SEI by promoting the formation of a LiF-rich interphase. Our findings provide deep insights into the design of high-performance Si/C anodes for practical applications in next-generation batteries.
硅(Si)由于其高理论容量(3590 mAh g-1)和丰度而被广泛认为是一种有前途的阳极材料。然而,它在下一代电池中的实际应用一直受到一些固有挑战的阻碍,包括不稳定的固体电解质界面(SEI)、大体积变化和低导电性。本文提出了一种简单有效的化学途径来构建一个功能有机分子,该有机分子可以约束Si/C电极的框架并调节其界面性质。优异的电化学性能,高负极材料负载(~ 8.0 mg cm-2)和高面积容量(大于3.0 mAh cm-2),为Si/C阳极实现了优异的循环稳定性。发现了一种独特的界面锚定机制,对有效缓解Si/C电极的巨大体积膨胀和保持其完整性起着重要作用。此外,对表面化学的研究证实,构建的分子可以通过促进富liff间相的形成来提高SEI的稳定性。我们的研究结果为下一代电池中实际应用的高性能Si/C阳极的设计提供了深刻的见解。
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引用次数: 0
Thiol–Yne Photocurable Isosorbide-Derived Networks: Formulation and 3D Printing 巯基炔光固化异山梨酯衍生网络:配方和3D打印
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-04 DOI: 10.1021/acssuschemeng.5c13600
Dumitru Moraru, Giacomo Trapasso, Davide Dalla Torre, Thomas Griesser, Fabio Aricò, Marco Sangermano
The present work reports for the first time thiol–yne photoresins prepared from novel alkyne derivatives of isosorbide and its epimers, isomannide and isoidide. Isosorbide was selected as a key biobased monomer for this study in consideration of its unique rigid V-shaped structure and peculiar reactivity, as well as for the growing interest in this cyclic sugar due to its numerous industrial applications in polymer science. Dialkyl carbonate chemistry was used for the preparation of dipropargyl derivatives of isosorbide and its epimers via alkoxycarbonylation reaction conducted under mild conditions using catalytic amounts of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD). Dialkyne monomers were then employed to produce biobased thiol–yne photoresins, formulated using trimethylolpropane tris(3-mercaptopropionate) as a trifunctional thiol. The photopolymerization behavior was investigated by real-time Fourier-transform infrared spectroscopy and differential scanning calorimetry (DSC) to assess conversion efficiency and reaction kinetics. The resulting networks were characterized by DSC and dynamic mechanical thermal analysis. Furthermore, residual thiol groups enabled surface modification with poly(ethylene glycol) methacrylate (PEGMA) to enhance hydrophilicity, as confirmed by contact angle measurements. Finally, the optimized isosorbide-based network formulation was successfully printed by digital light processing, achieving accurate 3D-printed structures.
本文首次报道了由异山梨酯及其外聚物、异甘油酯和异甘油酯的新型炔衍生物制备的巯基光树脂。考虑到异山梨酯独特的刚性v型结构和特殊的反应性,以及由于其在聚合物科学中的众多工业应用而对这种环状糖越来越感兴趣,因此选择异山梨酯作为本研究的关键生物基单体。采用碳酸二烷基化学,在温和条件下,以1,5,7-三氮杂环[4.4.0]十二-5-烯(TBD)为催化量,通过烷氧羰基化反应制备异山梨酯及其外聚物的二丙炔衍生物。然后利用二炔单体生产生物基硫醇光树脂,该树脂以三甲基丙烷三(3-巯基丙酸)作为三官能团硫醇配制而成。采用实时傅里叶变换红外光谱和差示扫描量热法(DSC)研究了光聚合行为,以评估转化效率和反应动力学。通过DSC和动态力学热分析对所得网络进行了表征。此外,残留的硫醇基团使聚乙二醇甲基丙烯酸酯(PEGMA)表面改性能够增强亲水性,正如接触角测量所证实的那样。最后,通过数字光处理成功打印出优化后的异山梨酯基网络配方,实现了精确的3d打印结构。
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引用次数: 0
Vertically Aligned Multiscale Heterojunction Arrays via 3D Printing for Efficient Photocatalytic Nitro-Hydrogenation 3D打印垂直排列多尺度异质结阵列用于高效光催化硝基加氢
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-04 DOI: 10.1021/acssuschemeng.5c12258
Bo Jiang, Chengyang Du, Chuchu Chen, Xinyu Guo, Wenjuan Wu, Chaofeng Zhang, Sehrish Manan, Yongcan Jin, Zhiqiang Liang
Visible-light-driven TiO2 photocatalysts are attractive for energy and environment applications, yet the currently developed TiO2 photocatalysts generally feature a wide band gap, activation solely to UV wavelength, and rapid charge carrier recombination. Herein, inspired by the light absorption strategy of the plant structure, a vertically aligned multiscale photocatalyst based on 3D printing is developed, where the carbonized lignin/TiO2 pillars, TiO2 nanorods, and Pd nanoparticles serve as tree trunks, branches, and leaves, respectively. The hierarchical photocatalyst composed of Pd/C and anatase/rutile-type TiO2 heterojunction not only exhibits a high specific surface area (592.23 m2·g–1) for multiple light scattering but also expands the UV activation region into the visible light spectrum, with the visible light absorption over 80% and the work function as low as 2.81 eV, which can highly promote the mass transfer for surface/interface reaction under visible light. As a proof of concept, the photocatalyst demonstrates an outstanding photocatalytic nitro-hydrogenation performance to industrial concentrated 4-nitrophenol (2.0 g·L–1), with the turnover frequency up to ∼16.0 mol4-NP·mol–1·min–1, and no obvious deterioration is observed even after 10 cycles. This study provides a facile and scalable 3D printing strategy to promote the light-harvesting capacity of TiO2 for efficient solar energy utilization and sustainable environment engineering.
可见光驱动的TiO2光催化剂在能源和环境应用方面具有很大的吸引力,但目前开发的TiO2光催化剂通常具有宽带隙、仅对紫外波长活化和快速载流子重组的特点。本文受植物结构的光吸收策略启发,开发了一种基于3D打印的垂直排列多尺度光催化剂,其中碳化木质素/TiO2柱、TiO2纳米棒和Pd纳米颗粒分别作为树干、树枝和叶子。由Pd/C和锐钛矿/金红石型TiO2异质结组成的层叠式光催化剂不仅具有高的比表面积(592.23 m2·g-1),而且将UV激活区扩展到可见光光谱,可见光吸收超过80%,功函数低至2.81 eV,可以极大地促进可见光下表面/界面反应的传质。作为概念验证,该光催化剂对工业浓缩4-硝基苯酚(2.0 g·L-1)具有出色的光催化氮加氢性能,周转频率高达~ 16.0 mol4-NP·mol-1·min-1,即使在10次循环后也没有明显的劣化现象。该研究提供了一种简单且可扩展的3D打印策略,以提高TiO2的光收集能力,从而实现高效太阳能利用和可持续环境工程。
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引用次数: 0
Enhanced Oxidative Coupling of CH4 to Olefins via CO2 Assistance over Alkali Metal-Supported Perovskite 在碱金属负载的钙钛矿上通过CO2辅助增强CH4与烯烃的氧化偶联
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1021/acssuschemeng.5c11616
Chenkai Sun, Yuxuan Xu, Junming Liang, Anqing Zheng, Zengli Zhao, Fang He, Kun Zhao
Methane oxidative coupling (OCM) based on the chemical-looping (CL) concept represents a promising pathway for the high-value upgrading of methane; however, commercialization is hindered by low olefin yields and deactivation of the oxygen carrier. In this study, we demonstrate that CO2 assistance significantly improves the performance of Li2CO3-promoted perovskite oxygen carriers in CL-OCM. The methane conversion increases from 22.7% to 30% and C2 selectivity increases from 50% to 89.6% when 10% of CO2 was introduced, while maintaining stable performance over 50 consecutive cycles. The presence of CO2 stabilizes the crystalline phase of the oxygen carrier. By maintaining the lattice oxygen concentration via a synergistic oxygen replenishment mechanism, the oxygen carrier achieves enhanced and durable catalytic activity. 13C isotopic labeling experiments elucidate the conversion pathways of CH4 and CO2, and 18O isotope tracing further confirms a surface lattice-oxygen exchange mechanism between CO2 and the oxygen carrier. These findings provide a viable strategy for advancing the commercialization of OCM and enabling the efficient synergistic utilization of CH4 and CO2.
基于化学环(CL)概念的甲烷氧化偶联(OCM)为甲烷的高价值升级提供了一条有前景的途径;然而,烯烃产率低和氧载体失活阻碍了商业化。在这项研究中,我们证明了CO2的辅助作用显著提高了li2co3促进的钙钛矿氧载体在CL-OCM中的性能。当加入10%的CO2时,甲烷转化率从22.7%提高到30%,C2选择性从50%提高到89.6%,并且在50个连续循环中保持稳定的性能。CO2的存在使氧载体的结晶相稳定。通过协同补氧机制维持晶格氧浓度,氧载体实现了增强和持久的催化活性。13C同位素标记实验阐明了CH4和CO2的转化途径,18O同位素示踪进一步证实了CO2与氧载体之间的表面晶格-氧交换机制。这些发现为推进OCM的商业化和实现CH4和CO2的高效协同利用提供了可行的策略。
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引用次数: 0
Micro/Nanostructured Multivalent Iron Carbonaceous Ensembles Amplified the Methanogenesis of Syntrophic Microbial Cells 微/纳米结构的多价铁碳系物增强了合养微生物细胞的产甲烷作用
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1021/acssuschemeng.5c08192
Aqsa Arooj, Bi-Long Chen, Yi-Ting Hu, Ting-Ting Zhang, Md Sohrab Ali, Zhiqiang Zhao, Yu-Ming Zheng, Jia-Cheng E. Yang
Converting organic wastes into clean energy is vital to the development of sustainable urban and zero/low-carbon communities but is challenging to achieve because of inefficient electron flux between acidogens and methanogens. Inspired by the unique electron configuration of Fe–S clusters in ferredoxin and their electron–proton transfer function in methanogenesis, we designed biologically adaptive micro/nanostructured multivalent iron carbon ensembles (mNICE) as cell synthesis accelerators, in which the high-spin Fe(III) sites would serve as biomimetic biological centers to directionally activate the key enzymes of methanogenesis. Upon successfully constructing mNICE-oriented real syntrophic microbial consortia, mNICE were found to dynamically buffer the acidogenic electrons and establish a directional electron transport chain between acidogens and methanogens. These roles subsequently synchronized proton flux via accelerating the regeneration of F420H2 and CoM–SH/CoB–SH via activating the critical F420 hydrogenase and heterodisulfide reductase. Such biotic-abiotic interfacial interactions between mNICE and syntrophic multicellular communities sustained organic-loading rates via improving the degradation of volatile fatty acids and retarding their toxicity to methanogens. As a result, mNICE elevated the methane yield by 134.20%. This work highlights the importance of steering the activity of key enzymes across the cell-material interface in the development of sustainable waste-to-energy conversion systems.
将有机废物转化为清洁能源对可持续城市和零/低碳社区的发展至关重要,但由于酸菌和产甲烷菌之间的电子通量效率低下,实现这一目标具有挑战性。受铁氧还蛋白中Fe -s簇独特的电子构型及其在甲烷生成过程中的电子-质子传递功能的启发,我们设计了生物自适应微/纳米结构多价铁碳体系(mNICE)作为细胞合成加速器,其中高自旋Fe(III)位点将作为仿生生物中心,定向激活甲烷生成的关键酶。在成功构建mNICE导向的真正共生微生物群落后,发现mNICE可以动态缓冲产酸电子,并在产酸菌和产甲烷菌之间建立定向电子传递链。这些作用随后通过激活关键的F420氢化酶和异二硫还原酶来加速F420H2和CoM-SH / CoB-SH的再生,从而同步质子通量。mNICE和合养多细胞群落之间的这种生物-非生物界面相互作用通过改善挥发性脂肪酸的降解和延缓其对产甲烷菌的毒性来维持有机负载率。结果表明,mNICE使甲烷产率提高了134.20%。这项工作强调了在可持续废物到能源转换系统的发展中,在细胞-物质界面上指导关键酶的活性的重要性。
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引用次数: 0
Fabrication of Antifreezing and Adhesive Hydrogel Electrolytes Based on Zwitterionic Proline for Flexible Zinc Ion Batteries with Low-Temperature Tolerance 低温柔性锌离子电池用两性脯氨酸抗冻粘接水凝胶电解质的制备
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1021/acssuschemeng.5c09262
Runtian Miao, Xingyu Fan, Ning Zhang, Minjuan Gao, Yaling Mao, Yueqin Li
Hydrogel-based zinc–ion batteries (ZIBs) stand out as promising flexible energy storage devices, benefiting from their synergistic advantages of high theoretical specific capacity, reliable safety performance, and cost-effectiveness. However, conventional hydrogel-based ZIBs are plagued by inadequate ionic conductivity and structural instability at subzero temperatures, which consequently lead to sluggish Zn-ion migration kinetics and severe capacity decay. Herein, we introduced zwitterionic proline (PL) as an antifreezing additive into cross-linked polyacrylamide/carboxymethyl chitosan (PAM/CMCS) to address the above-mentioned challenges. PL can reduce hydrogen bonds between free water, thus endowing the hydrogel electrolyte (HE) with good antifreezing and antidrying performance, interfacial adhesive, high ionic conductivity (30.20 ± 0.47 mS/cm), and enhanced interfacial adhesion. Notably, the PL additive facilitates more uniform zinc deposition in the PAM/CMCS/PL electrolyte relative to the bare PAM/CMCS electrolyte and the ZnSO4 aqueous electrolyte. Accordingly, the PAM/CMCS/PL HE confers outstanding long-term cycling stability on the Zn//Zn symmetric cell. The asymmetrical Zn//MXene@PANI flexible ZIBs can deliver a specific capacity of 154.8 mAh/g at 0.5 A/g and maintain 84.9% capacity with an excellent Coulombic efficiency above 99% after 500 cycles. This flexible ZIB can withstand severe deformations and operate normally at low temperatures (75.2 mAh/g at 1.0 A/g, even at −30 °C). High-performance flexible ZIBs with outstanding low-temperature tolerance are successfully fabricated in this work, providing insightful references for advancing multifunctional flexible energy storage systems and wearable electronics.
由于具有理论比容量高、安全性能可靠、成本效益高等协同优势,水凝胶型锌离子电池(zbs)作为一种有前景的柔性储能设备脱颖而出。然而,传统的水凝胶基ZIBs在零下温度下受到离子电导率不足和结构不稳定的困扰,从而导致zn离子迁移动力学缓慢和严重的容量衰减。本文将两性离子脯氨酸(PL)作为抗冻添加剂引入交联聚丙烯酰胺/羧甲基壳聚糖(PAM/CMCS)中,以解决上述问题。PL可以减少游离水之间的氢键,从而使水凝胶电解质(HE)具有良好的抗冻抗干性能、界面粘连性、高离子电导率(30.20±0.47 mS/cm)、增强界面粘连性。值得注意的是,相对于裸PAM/CMCS电解质和ZnSO4水溶液电解质,PL添加剂有助于在PAM/CMCS/PL电解质中更均匀地沉积锌。因此,PAM/CMCS/PL HE在Zn//Zn对称电池上具有出色的长期循环稳定性。不对称Zn//MXene@PANI柔性ZIBs在0.5 a /g时可提供154.8 mAh/g的比容量,并在500次循环后保持84.9%的容量,库仑效率超过99%。这种灵活的ZIB可以承受严重的变形,并在低温下正常工作(1.0 A/g时75.2 mAh/g,即使在- 30°C)。成功制备了耐低温性能优异的高性能柔性ZIBs,为推进多功能柔性储能系统和可穿戴电子产品的发展提供了有意义的参考。
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引用次数: 0
Exergy, Economic, and Life Cycle Assessment of Novel Cogeneration Systems Based on Chemical Heat Pumps 基于化学热泵的新型热电联产系统的能源、经济和生命周期评估
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1021/acssuschemeng.5c10606
Yan Hou, Hao Zhao, Lei Yan, Yi Wang, Shuguang Xiang, Xiaoyan Sun, Lili Wang, Li Xia, Shaohui Tao
As global energy and environmental pressures increase, the recovery of industrial low-temperature waste heat (LTWH) has become increasingly important. This study develops four novel cogeneration systems based on chemical heat pumps to simultaneously provide thermal energy and electricity from LTWH. Through system optimization, the internal cogeneration system (NORC-IAH) identified the optimized NORC-IAH (NORC-IAH1), which effectively converts LTWH, generating electricity and high-temperature heat. Exergy, economic, and environmental assessments were conducted for NORC-IAH1. Exergy analysis shows the highest exergy loss in the distillation column T1, at 599.85 kW, and the lowest exergy efficiencies for pumps P1 and T1, at 37.25% and 41.94%, respectively. Economic analysis reveals a total annual cost of $712,641.65/year, with T1 and heat exchanger H1 contributing the most, indicating potential improvements in heat transfer efficiency. Life cycle assessment highlights the carcinogenic risk from sulfidic tailings during the stainless steel construction stage. This study provides a foundation for industrial heat recovery and environmental sustainability.
随着全球能源和环境压力的增加,工业低温余热的回收变得越来越重要。本研究开发了四种基于化学热泵的新型热电联产系统,以同时提供LTWH的热能和电力。通过系统优化,内部热电联产系统(NORC-IAH)确定了优化后的NORC-IAH (NORC-IAH1),该系统有效地转换了LTWH,发电并产生高温热。对NORC-IAH1进行了能源、经济和环境评估。火用分析表明,精馏塔T1的火用损失最高,为599.85 kW,泵P1和T1的火用效率最低,分别为37.25%和41.94%。经济分析显示,年总成本为712,641.65美元/年,其中T1和换热器H1贡献最大,表明传热效率有可能提高。生命周期评价强调了不锈钢施工阶段硫化物尾矿的致癌风险。该研究为工业热回收和环境可持续性提供了基础。
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引用次数: 0
Sustainable Machine-Learning Framework for Efficient Color Prediction in Dope-Dyed Recycled PET/PCT 可持续性机器学习框架在dope染色回收PET/PCT中的有效颜色预测
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1021/acssuschemeng.5c11490
Hyeokjun Cho, Jae Wang Ko, Seung Geol Lee
Dope dyeing offers an eco–efficient alternative to conventional textile coloration by incorporating pigments directly into the polymer melt, minimizing water and chemical use. This study presents a sustainable data–driven framework that reduces repetitive dyeing trials and resource consumption during color matching of dope–dyed recycled PET/PCT microfiber fabrics. A two–stage hybrid machine learning model─combining k–nearest neighbors (kNN), feature expansion, and residual modeling─was developed to predict subtle color variations within the narrow CIELAB output range inherent to dope–dyed systems. The model achieved R2 values above 0.83 for L*, a*, and b*, and external validation with untrained dyeing recipes yielded a mean ΔE of 0.65 with visually negligible deviation. By accurately pre–estimating color outcomes, this approach minimizes iterative experiments, energy use, and wastewater generation, contributing to sustainable textile manufacturing. The proposed framework demonstrates that data–driven color prediction can enhance process efficiency and environmental performance in dope–dyed fabric production, supporting circular and low–impact coloration technologies.
涂料染色提供了一种生态高效的替代传统的纺织品染色,将颜料直接纳入聚合物熔体,最大限度地减少水和化学品的使用。本研究提出了一个可持续的数据驱动框架,减少了染色回收PET/PCT超细纤维织物配色过程中的重复染色试验和资源消耗。开发了一种结合k近邻(kNN)、特征扩展和残差建模的两阶段混合机器学习模型,用于预测染料染色系统固有的狭窄CIELAB输出范围内的细微颜色变化。该模型对L*、a*和b*的R2值均在0.83以上,未经训练的染色配方的外部验证平均ΔE为0.65,视觉偏差可以忽略不计。通过准确地预估颜色结果,这种方法最大限度地减少了迭代实验、能源使用和废水产生,有助于可持续纺织品制造。提出的框架表明,数据驱动的颜色预测可以提高染色织物生产的工艺效率和环境性能,支持循环和低影响的染色技术。
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引用次数: 0
From Waste to Function: Valorization of Collagen-Based Wastes with Natural Deep Eutectic Solvents for Bioadhesive Applications 从废物到功能:胶原基废物与生物粘合剂应用的天然深共晶溶剂的增值
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1021/acssuschemeng.5c11526
Chiara Pelosi, Eleonora Micheli, Elena Pulidori, Giulia Caroti, Brunella Cipolletta, Beatrice Campanella, Iacopo Corsi, Silvia Pizzimenti, Leila Birolo, Ilaria Bonaduce, Celia Duce, Emilia Bramanti
In this study, we propose a novel, environmentally, economically, and energetically sustainable approach for the valorization of vegetable-tanned leather waste, aiming at producing biobased adhesives with antibacterial properties and promising water resistance. The treatment of leather scraps was carried out using various Natural Deep Eutectic Solvents (NADES) in mild conditions (1 h, 60 °C), i.e., lactic acid:urea in a molar ratio of 2:1, choline chloride:lactic acid in a molar ratio of 1:1, and choline chloride dehydrated oxalic acid in a molar ratio of 1:1. The resulting bioadhesives exhibited excellent binding performances, in particular, on wood substrates. Structural modifications and its thermal behavior of collagen after the treatment were investigated using Fourier Transform Infrared Spectroscopy with Attenuated Total Reflectance (ATR-FTIR), Thermogravimetric Analysis (TGA and TGA/FTIR), Evolved Gas Analysis–Mass Spectrometry (EGA-MS), Pyrolysis–Gas Chromatography–Mass Spectrometry (Py-GC-MS), and proteomic techniques. Overall, this approach highlights a circular and green strategy for upcycling leather industry byproducts into high-performance materials, aligning with current goals in waste minimization and resource efficiency.
在这项研究中,我们提出了一种新颖的、环保的、经济的、能源可持续的方法来处理植物鞣革废料,旨在生产具有抗菌性能和耐水性的生物基胶粘剂。采用多种天然深共晶溶剂(NADES)在温和条件下(60℃,1 h),即乳酸:尿素摩尔比为2:1,氯化胆碱:乳酸摩尔比为1:1,氯化胆碱脱水草酸摩尔比为1:1,对皮革废料进行处理。所得的生物胶粘剂表现出优异的结合性能,特别是在木材基材上。采用傅里叶变换红外光谱(ATR-FTIR)、热重分析(TGA和TGA/FTIR)、演化气相分析-质谱(EGA-MS)、热解-气相色谱-质谱(y- gc - ms)和蛋白质组学技术研究胶原处理后的结构变化及其热行为。总的来说,这种方法强调了将皮革工业副产品升级为高性能材料的循环和绿色战略,与当前减少废物和提高资源效率的目标保持一致。
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引用次数: 0
Semidry Acid Hydrolysis of Polyester/Cotton Blends through In Situ Catalyst Loading 原位催化剂负载半干酸水解聚酯/棉共混物
IF 8.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-03 DOI: 10.1021/acssuschemeng.5c13113
Yifan Liu, Xiangyue Wei, Shun Zhang, Xuan Zhao, Wenhao Xu, Lei Yan, Zijun Feng, Xuehui Liu, Yu-Zhong Wang, Shimei Xu
Polyester/cotton blends, which represent over 60% of the textile market, present a significant challenge for chemical recycling. Conventional solution acid hydrolysis suffers from high acid consumption and low solid/liquid ratios and results in severe equipment corrosion due to the acid-resistant nature of polyester. To address the limitation, we developed an in situ catalyst-loaded semidry acidic hydrolysis method for depolymerization of polyester/cotton blends. By leveraging hydrogen bonding between cotton and a phosphomolybdic acid (PMA) catalyst, the acidic catalyst is anchored onto the fabric, forming localized acid microreactors that facilitate the hydrolysis of polyester without requiring an additional aid solution. The semidry hydrolysis process cuts acid usage to 1/100 of conventional processes, increases the solid–liquid ratio by 3 times, and accelerates the reaction rate by 25 times, while achieving a TPA yield exceeding 94%. The corrosion is markedly suppressed. Both the impregnation solution and the used catalyst are recyclable, contributing to a more sustainable catalytic process. The study offers a sustainable and efficient strategy for recycling blended fabrics with a broad applicability.
涤纶/棉混纺织物占纺织品市场的60%以上,对化学回收提出了重大挑战。由于聚酯的耐酸特性,传统的溶液酸水解存在高酸消耗和低固液比的问题,并且会导致严重的设备腐蚀。为了解决这一限制,我们开发了一种原位负载催化剂的半干酸性水解方法来解聚聚酯/棉混纺。通过利用棉花和磷酸钼酸(PMA)催化剂之间的氢键,酸性催化剂被固定在织物上,形成局部酸性微反应器,促进聚酯的水解,而不需要额外的辅助溶液。半干水解工艺将酸用量减少到常规工艺的1/100,料液比提高3倍,反应速率提高25倍,TPA收率超过94%。腐蚀明显受到抑制。浸渍液和使用的催化剂都是可回收的,有助于更可持续的催化过程。该研究为混纺织物的回收利用提供了一种可持续、高效的策略,具有广泛的适用性。
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引用次数: 0
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