COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Meisi Chen,Dandan Hao,Yuwen Shao,Tong Zhao,Chengyi Qiu,Xiemin Liu,Muhua Chen,Gang Zhang,Xinbao Zhu,Bo Fu
Cellulose directs Mg/Ni-MOF-74 growth on fiber surfaces. • Tuning Mg/Ni ratio optimizes pore structure and open metal site characteristics. • MNC-1 exhibits high CO 2 capacity and CO 2 /N 2 selectivity (>200). • Hierarchical porosity facilitates both CO 2 confinement and gas mass transfer. • Low isosteric heat of adsorption promotes easy regeneration. To overcome the poor dispersibility and limited gas mass transfer of MOF powders, a series of Mg/Ni-MOF-74/cellulose composites (MNC-x) were fabricated via cellulose interface directed in situ growth. The effects of the Mg/Ni ratio on the material structure and CO 2 /N 2 adsorption performance were investigated. Results showed that the introduction of Ni altered the local environment and crystal size, regulating the pore structure and adsorption sites of the MNC-x series materials. The optimal sample (MNC-1) achieved a static CO 2 adsorption capacity of 2.67 mmol·g −1 at 298 K and exhibiting superior cycling performance. IAST theoretical calculations indicated that MNC-1 possessed high CO 2 /N 2 selectivity, with an initial isosteric heat of adsorption of only 34.51 kJ·mol −1 , indicating that physical adsorption was predominant. Combined with DFT analysis, the excellent CO 2 adsorption performance of MNC-1 was mainly attributed to the interaction between the open metal sites of Mg/Ni and CO 2 , as well as the hierarchical pore structure formed by the microporous adsorption sites and mesoporous mass transfer channels. This study provides a feasible strategy for designing cellulose-supported, processable bimetallic MOF adsorbents for CO 2 adsorption. Download: Download high-res image (269KB) Download: Download full-size image
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CARBOHYDRATE POLYMERS
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2021
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IF 9.381
Zhicheng Jiang,Yanling Wang,Zhijian Huang,Wenjing Ma,Shuting Gao,Wei Dong,Min Xu
Green and sustainable cellulose-based composites containing poly(ε-caprolactone) (PCL) with temperature-induced shape memory properties and conductivity performance are presented. The composites are fabricated by in situ polymerization of ε-caprolactone (ε-CL) monomer in three-dimensional porous cellulose gels, and then silver-porous cellulose gel/poly(ε-caprolactone) (Ag-Cell/PCL) composites are fabricated by depositing Ag onto the surface of porous cellulose gel/poly(ε-caprolactone) (Cell/PCL) composites. The addition of PCL not only improves the mechanical properties of the Cell/PCL composites but also endows them with excellent shape memory properties. The Cell/PCL composites exhibit a high shape-fixing rate (98.9%) and can recover to their original shape within 8 s without external force. In addition, the Ag-Cell/PCL composites show superior and stable conductivity under different bending angles. Finally, a temperature warning sensor with fast performance is successfully designed using Ag-Cell/PCL composites. This work provides a means to develop temperature warning systems based on shape memory polymers.
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JOURNAL OF CHROMATOGRAPHY A
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2012
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IF 4.531
Jin-Feng Zhong,Xin-Sheng Chai,Hui-Chao Hu,Shi-Yu Fu
This paper reports on a headspace gas chromatographic method (HS-GC) for rapid determination of degree of substitution in succinic anhydride (SA) modified celluloses. The method is based on the reaction between the carboxyl groups in SA modified cellulose and bicarbonate solution in a closed headspace sample vial. The CO 2 released from the reaction was measured by HS-GC. The completion of the reaction was achieved within 25 min at 80 °C when a small sample size (<20 mg) was used. The relative standard deviation (RSD) measurement of precision was less than 4.1%, and the results were within 8.0% of those obtained with the traditional titration for determining the degree of substitution. The present method is simple, practical, automated, and suitable for use in anhydride modified cellulose research.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2019
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IF 2.752
Donglei Mao,Jianhao Qiu,Mingmin Jia,Xiong-Fei Zhang,Jianfeng Yao
Porous carbon was prepared through a simple and efficient method using microcrystalline cellulose as carbon source. Compared with pristine carbon (C-1), nitric acid treated carbon (C-2) has more acidic oxygen-containing groups on its surface (acid density: 0.14 mmol/g for C-1 and 2.13 mmol/g for C-2). Pt supported Pt/C-2 behaves a substantially enhanced catalytic oxidation activity of benzyl alcohol (conversion of 71.7%) compared with Pt/C-1(conversion of 37.2%) under the same conditions. Further characterizations and experiments indicate that the excellent dispersion of Pt nanoparticles and strong hydrogen bonding interaction between benzyl alcohol and Pt/C-2 are crucial for the enhanced catalytic activity. Our experimental results also show that mild temperature (60 °C) and non-polar solvents are more beneficial for the reaction, and O 2 atmosphere is a necessity for benzyl alcohol oxidation.
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ACS Applied Nano Materials
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2024
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IF 5.3
Sha Wang,Zhu Shan,Mehraj Ahmad,Zhouyue Li,Zhe Sun
Nanofluidic membranes utilize selective ion transport to capture osmotic energy from salinity gradients, efficiently converting it to electrical energy. However, traditional nanofluidic material synthesis still encounters challenges, including low charge density, high ion transport energy barriers, and limited current output. Here, we present a composite membrane consisting of hole-enriched graphene oxide (HGO) and cellulose nanofibers (CNF), engineered to enhance ion transport and energy conversion. HGO facilitates direct ion transfer through the nanopore within lamellar layers, effectively reducing the transmission distance and lowering the energy barrier for ion movement, thus enabling faster ion transfer between layers. CNF, on the other hand, offers robust mechanical strength and numerous active groups, imparting high ion selectivity to the nanoporous membrane. An osmotic energy generator utilizing the HGO/CNF membrane achieved a peak power density of 1.25 W m–2. Notably, the cationic transference number and energy conversion efficiency peaked at 0.84 and 23.64%, respectively, under a 500-fold concentration gradient. Additionally, the HGO/CNF composite membrane exhibits a robust tensile strength of 78.51 MPa, underscoring its excellent mechanical properties. The above results suggest that this highly ion-selective and energy-efficient composite membrane presents a promising avenue for advancing osmotic energy research.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yifei Huang,Chengqi Feng,Chenkai Jin,Juncheng Huang,Haining Na,Jin Zhu
Solid acid catalysts have attracted much attention in cellulose hydrolysis due to their high product selectivity, easy preparation and reusability. However, most current researches only focus on modifying their surface functional groups but overlook the impact of carrier shape on hydrolytic performance. Herein, we synthesize a series of rod-shaped silica with varying sizes for cellulose hydrolysis to analyze the shape mode to enhance the breaking of cellulose structure during solid-solid reaction. Experimental results show rod-shaped silica produces particular penetrating mode to enter into the interior of cellulose and thus causing strong disruption. This mode quickly disrupts the aggregated structure of cellulose, fragmenting it in a short time. The cellulose fragments are rapidly converted to glucose in a 0.02 M H + solution. This process achieves an 83.92 % cellulose conversion rate and a 52.98 % glucose yield. The discovery suggests a new strategy to design one-dimensional solid catalyst for the efficient hydrolysis of cellulose to sugar.
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CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Yichen Tian,Yuele Kong,Xiaodi Liu,Lei Chen,Li Wang,Lin Zhou,Guodong Wang,Qiang Zhang
Low-density lipoprotein (LDL) plays a crucial role in the development of cardiovascular disease. Lowering the level of LDL is an effective therapeutic strategy for treating cardiovascular disease. Here, we developed a facile and robust method to prepare carboxymethyl cellulose beads (CMCBs) for selectively adsorbing LDL. CMCBs had plentiful carboxyl groups and large numbers of nanopores on their surface. The in vitro assay reveals that CMCBs had a high LDL adsorbing capability of 7.67 ± 0.16 mg/g, owing to the carboxyl group-induced electrostatic adsorption and the nanopore-mediated trapping effect. CMCBs also possessed the excellent mechanical strength to resist the impact of rushing blood. Moreover, CMCBs were highly blood-compatible and had anticoagulant activity. The in vivo experiment reveals that LDL were significantly reduced from 15.02 ± 1.62 to 9.35 ± 1.71 mmol/L after blood perfusion using CMCBs, while minimal side effects were detected for the blood routine parameters. The study provides an easy-to-fabricate LDL adsorbent for selective and efficient clearance of LDL in hemoperfusion.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Jiyan Li,Min Qiao,Shuo Gao,Tao Zhou,Rui Jiao,Fei Wang,Hanxue Sun,An Li
Solar-driven interfacial evaporation (SDIE) has shown great potential for seawater desalination and wastewater treatment. In this context, we report the development of a composite aerogel material, termed BCAM, which is synthesized from bacterial cellulose, agar powder, and glutaraldehyde, with the addition of MXene as a photothermal material. The two active aldehyde groups (-CHO) of glutaraldehyde undergo a condensation reaction with the hydroxyl groups (-OH) in bacterial cellulose and agar powder, promoting crosslinking between the molecular chains and forming a composite material with directional channel structures. This material exhibits a rich porous structure, excellent mechanical properties, and superhydrophilic characteristics, and is shaped using a gradient cooling method. The incorporation of MXene enhances the light absorption of BCAM (up to 95.6 %), resulting in an evaporation rate of 1.78 kg·m −2 ·h −1 , while the evaporation rate of 3D BCAM reaches 3.43 kg·m −2 ·h −1 . After seawater desalination, BCAM achieved a removal efficiency of over 99 % for major ions in seawater. Furthermore, in practical industrial wastewater, the evaporation rate of the 3D BCAM evaporator reaches 2.8 kg·m −2 ·h −1 , and BCAM maintains its structural integrity after being immersed for 24 h under various acidic conditions (pH:1–5). Overall, these findings demonstrate the substantial practical application potential of BCAM in SDIE technologies.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Qian Sun,Xielong Dong,Juan Xu,Ting Wang
The study aimed to develop a multifunctional wound dressing with enhanced antibacterial properties and wound healing promotion. The synthesis process involved preparing oxidized regenerated cellulose (ORC) following a modified procedure, synthesizing chitosan/silver nanoparticles (CS/Ag NPs) via an in-situ reduction method, and subsequently preparing ORC/CS/Lys@Ag NPs hydrogels. Characterization techniques including FTIR, XRD, SEM, and EDS were employed to analyze functional groups, lattice structure, morphology, and elemental composition. Gelation time, swelling behavior, water retention, mechanical properties, viscosity, self-healing capacity, rheological behavior, oxygen permeability, in vitro degradation, release of Ag + , and antibacterial properties were evaluated using various experimental methods. Results indicated that the novel wound dressing has the capability to evenly distribute Ag NPs to effectively counteract bacteria. It can maintain moist conditions for 86 h, resist a sturdy mechanical pressure of 11.3 KPa, and degrade by 11.045 % ± 0.429 within 8 h. Combining its efficient gas exchange abilities, self-repairing function, and biocompatibility, almost full recovery was observed in injured mouse skin within 13 days, highlighting its promising clinical utility.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Cong Jiang,Qiansen Wang,Hong Wang,Yehan Tao,Jie Lu,Gaofeng Pan,Jian Du,Haisong Wang
The eco-friendly cellulosic paper-based mulch film has become an alternative to petroleum-based plastics. However, the integration of black, hydrophobic and high mechanical performances into cellulose mulch film still remained challenge. Herein, multifunctional (P/SLS-Fe/CA) black mulch film with the sandwich structure was designed by layer-by-layer assembly (LBL) strategy using filter paper (P) as the substrate, sodium lignosulfonate chelated with iron (SLS-Fe) as black factor and cellulose acetate (CA) as the hydrophobic layer. The quinone structure formed by the chelation and redox reaction between Fe 3+ and SLS induced the color change from brown-yellow to black of lignin. Moreover, the dynamic reversible physical bonds between P, SLS-Fe and CA endowed the composite with enhanced mechanical performance. The dry and wet tensile strength of the composite were 1.6 times and 21.3 times higher than pristine filter paper, respectively. The water contact angle increased from 58.4º for pure filter paper to 138.7º for the optimized P/SLS-Fe 4 /CA. Furthermore, the prepared black paper-mulch has low water vapor transmittance, heat preservation properties and good water resistance, which promote the growth of cabbage seeds. This work provides a prototype for the design and preparation of black cellulose fiber base membrane, and promotes the green development of agriculture.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Xin Yang,Yuxiang Du,Pengjie Jiang,Rui Fu,Lipeng Liu,Changqing Miao,Rongrong Xie,Yinghui Liu,Yaxiong Wang,Huazheng Sai
Aerogel fibers are good thermal insulators, suitable for weaving, and show potential as the next generation of intelligent textiles that can effectively reduce heat consumption for personal thermal management. However, the production of continuous aerogel fibers from biomass with sufficient strength and radial elasticity remains a significant challenge. Herein, continuous gel fibers were produced via wet spinning using agarose (AG) as the matrix, 2,2,2,6,6-tetramethylpiperidine-1-oxyl radical-oxidized cellulose nanofibers (TOCNs) as the reinforcing agent, and no other chemical additives by utilizing the gelling properties of AG. Supercritical drying and chemical vapor deposition (CVD) were then used to produce hydrophobic AG-TOCN aerogel fibers (HATAFs). During CVD, the HATAF gel skeleton was covered with an isostructural silica coating. Consequently, the HATAFs can recover from radial compression under 60% strain. Moreover, the HATAFs have low densities (≤0.14 g cm–3), high porosities (≥91.8%), high specific surface areas (≥188 m2 g–1), moderate tensile strengths (≤1.75 MPa), excellent hydrophobicity (water contact angles of >130°), and good thermal insulating properties at different temperatures. Thus, HATAFs are expected to become a new generation of materials for efficient personal thermal management.
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Journal of Energy Storage
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2025
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IF 9.8
He Jiang,Jiajun Hu,Pengju Yang,Yian Qian,Tonghua Ma,Renzhong Wei,Yi Zhang,Weisheng Sun,Xi Guo
Phase change materials (PCMs) have demonstrated significant potential in thermal management owing to their substantial thermal energy storage capacity and no need for additional energy consumption. Nevertheless, achieving efficient manufacturing of PCMs with high latent heat storage and superior shape stability remains a formidable challenge. In order to achieve rapid preparation of stabilized phase change material, we design a photo initiated copolymerization crosslinking strategy inside phase change material which combine encapsulation methods of graft copolymerization and porous material adsorption. Compared to traditional thermal polymerization reactions that require heating for several hours, this strategy only requires 20 min of ultraviolet light irradiation. The composite shows excellent enthalpy of 152.64 J/g benefited by the solid-solid phase change material matrix and absorbed octadecane (ODA). Addition of nickel foam (NF) provided a thermal conductivity of 1.094 W/m·K which was 270 % higher than pure composite phase change material. Due to the superior thermal energy storage capacity and thermal conductivity of composites phase change material, the surface temperature of battery in use decreased 4 °C. This work provides a novel approach for large-scale production of high-performance form-stable phase change materials which shows great applying potential in heat management of battery.
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