INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Xin-Bo Pang,Jing-Pei Cao,Nai-Yu Yao,Jing-Ping Zhao,Tian-Long Liu,Shi-Jie Cai,Xiao-Yan Zhao,Tungalagtamir Bold
Catalytic pyrolysis as an important pathway for the production of sustainable chemicals and fuels from biomass. However, it is still a huge challenge to significantly improve the yield of light aromatics by adjusting the structure of ZSM-5 zeolite and to fully understand its catalytic mechanism. Here, the directional preparation of ZSM-5 nanosheets with controllable b-axis thickness was achieved by controlling the amount of silicalite-1 added during the hydrothermal synthesis process. Characterization results demonstrate that the reduction in b-axis thickness greatly enhances the mass transfer process of the zeolite while enhancing the accessibility of acidic sites, thereby promoting the catalytic conversion of biomass pyrolysis volatiles to aromatic. The yield of light aromatic hydrocarbons in bio-oil is substantial increased, the bio-oil of 20-NCZ5 had the highest aromatic content with a yield of 97.1% and a yield of 135 mg/g, achieving efficient catalytic upgrading of bio-oil. Highly b-axis-oriented ZSM-5 nanosheets provide a new approach for efficient biomass utilization. Furthermore, this zeolite holds promise for broader applications in the catalytic conversion of various energy sources.
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PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
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2026
·
IF 2.2
Wanyi Ran,Mo Zhou,Yan Cheng,Ping Song,Yingchun Zhu,Lishi Yan
Effective pretreatment is critical for recovering high-purity cellulose fiber from lignocellulosic biomass. This study reports a sequential biochemical strategy for wheat straw valorization employing choline chloride/lactic acid/water natural deep eutectic solvent (DES) followed by laccase treatment. This integrated approach synergistically targeted lignin and hemicellulose removal, and facilitated the recovery of highly crystalline cellulose fibers. The DES solution consists of chloride (ChCl) and lactic acid (LA) (1:9 molar ratio), containing 10% (w/w) water. Optimization revealed that DES pretreatment (120 °C, 2 h) coupled with laccase treatment (35 °C, 24 h) maximized delignification (99.5%) and hemicellulose removal (95.5%), and yielded 95.1% remaining cellulose with 93.5% purity. This approach realized that both retention and purity of cellulose reached over 90%, which cannot be achieved by majority pretreatment methods. Comprehensive physicochemical characterization (SEM, FTIR, XRD, TGA) demonstrated that the recovered cellulose fibers possess significantly enhanced crystallinity and superior thermal stability compared to the untreated biomass. This study provides a novel approach which integrating DES–laccase treatment process to recover high-purity cellulose fibers with negligible cellulose loss.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Mengdi Xu,Hermela Ejegu Feysa,Xiaoqing Ni,Guangbiao Xu,Hua Shen,Yueqi Zhong,Xingjie Wang
Natural antibacterial mechanism of kapok fiber • Nanobumps induced mechanical deformation and membrane rupture • Lignin, flavonoids and triterpenoids exhibited chemical antibacterial properties. • Kapok gauze promoted the healing process of wounds infected by bacteria. Kapok fibers demonstrate potential advantages in the field of medical dressings, though the intrinsic mechanisms of their antibacterial activity have not been systematically elucidated. This study utilizes an integrated approach involving physical characterization, chemical analysis, and antibacterial evaluation to elucidate the natural antibacterial mechanisms of kapok fibers. The results indicate that kapok fibers possess axially aligned nanoscale protrusions distributed across their surfaces. Chemical analysis reveals a complex composite wax layer on the fiber surface, which contains silanes, fatty acids, flavonoids, and triterpenoids. Comparative antibacterial experiments utilizing kapok fibers with varying compositions, along with physicochemical characterization, reveal three synergistic antibacterial mechanisms: (1) The superhydrophobic surface demonstrates minimal bacterial adhesion, thereby reducing microbial colonization. (2) Surface nanotopography induces mechanical deformation and subsequent membrane rupture of bacterial cells through tensile stress mechanisms. (3) Chemical constituents including lignin, flavonoids and triterpenoids exhibit membrane-disruptive activity. The hydroentangled kapok gauze promotes the healing of bacterially infected wounds by effectively reducing the bacterial load and modulating the wound microenvironment. This systematic investigation not only reveals the multi-level antibacterial mechanisms of kapok fibers but also establishes a theoretical foundation for developing novel kapok fiber medical gauzes.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
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IF 3.9
Lingxiao He,Feiyue Zhang,Ning Ma,Mei Hong,Chaoqun You,Fei Wang
TEMPO-oxidized Acacia mearnsii bark cellulose (OABC), pretreated using deep eutectic solvents (DES), was employed to prepare Pickering emulsions, which served as an efficient adsorbent for matrine. The adsorption of matrine from aqueous solutions was systematically characterized and evaluated using an OABC-stabilized Pickering emulsion (OABCPE). At 298 K, the equilibrium adsorption capacity of matrine on OABCPE was determined to be 44 mg g–1. Furthermore, investigations into the Gibbs free energy, entropy change, and enthalpy increment of the adsorption process indicated that the process is exothermic, spontaneous, and predominantly driven by physisorption. During the first 20 min, a noticeable increase in the adsorption rate is observed, with equilibrium being reached after 60 min. Dynamic adsorption studies revealed that equilibrium could be reached within 200 min, with 70% of the adsorbed matrine being desorbed using 70% alcohol. The adsorption isotherms were fitted to both the Langmuir and Freundlich models. The pseudo-first-order and pseudo-second-order models were employed to analyze the adsorption kinetics. Four breakthrough models (Adams–Bohart, Thomas, Clark, and Yoon–Nelson) were applied to analyze fixed-bed adsorption. The rapid adsorption and facile preparation of OABCPE endow it with significant potential for matrine adsorption and exhibit good stability and reusability under varying industrial conditions.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
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IF 8.7
Jun Wang,Qing Zhang,Xingxing Zeng,Jianhua Qu,Jing Wen,Qi Hu
TEMPO system selectively added -COOH while keeping the hollow microtube structure • Oxidation removes cellulose barrier, creates negative charges, traps cations • OMTC reached 79% of equilibrium capacity in 10 s and near-equilibrium in 2 min • Fixed-bed experiment showed excellent hydraulics with optimal density 0.5403 g/cm 3 Within the discipline of treating organic wastewater, the development of a bio-based adsorbent with both an ultra-fast adsorption rate and a high removal efficiency remain a challenging goal. An efficient adsorbent, named oxidized Metaplexis japonica tomentum cellulose microtubes (OMTC), was fabricated. This adsorbent came from the tomentum of Metaplexis japonica seeds. The C6 hydroxyl moieties of cellulose were transformed into carboxyl functionalities by means of a selective oxidation method. The process used a TEMPO/NaClO/NaClO 2 combination while maintaining a weakly acidic pH. The oxidation led to the creation of numerous active sites. At the same time, it preserved the intact natural microtube structure. The structure had a diameter of approximately 20 μm and a wall thickness of about 1.16 μm. An alkali treatment removed impurities. This treatment provided a uniform reaction interface for the subsequent oxidation. After the oxidation, the carboxyl group content on the cellulose surface reached 0.48 mmol/g ± 0.02 mmol/g. The surface also changed from hydrophobic to hydrophilic. The as-prepared OMTC showed a high removal performance toward cationic organic pollutants. Under alkaline conditions, its adsorption capacity increased. It also showed an ultra-fast adsorption rate. Specifically, it reached 79% of the equilibrium adsorption capacity within 10 s and achieved near-equilibrium within 2 min. The oxidized cellulose microtube adsorbent combines the natural high specific surface area with the high-density carboxyl sites introduced by oxidation. The synergistic effect of the two enables rapid and efficient treatment of organic wastewater. Download: Download high-res image (205KB) Download: Download full-size image
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Resources Chemicals and Materials
·
2026
·
IF 10.4
Nan Sun,Dawei Zhao,Jie Zheng,Rongguang Li,Zhiguo Li,Yang Liu
This study introduces an innovative organic filler, polydopamine-coated cellulose nanofibers (PDA-CNF), designed to revolutionize self-healing materials by introducing abundant dynamic chemical bonds into polymer matrices. The synergistic interaction between dynamic hydrogen bonds and metal-ligand coordination enabled the creation of a series of composites exhibiting exceptional and highly tunable mechanical and self-healing properties. Notably, the Zn²⁺-enhanced composite exhibited a tensile strength of 5.8 MPa and a self-healing efficiency of 99.3%, demonstrating remarkable improvements of 444.6% and 101.7%, respectively, compared to the conventional composite without metal-ligand coordination. This innovation effectively breaks the long-standing trade-off between mechanical strength and self-healing efficiency in traditional polymers. By precisely adjusting the type and concentration of metal ions, the composites exhibit extensive tunability in stress (0.9–6.5 MPa), strain (3.7%–240.0%) and self-healing efficiency (70.4%–109.7%). This tunability enabled the development of multifunctional materials tailored for cutting-edge applications. Benefiting from such adaptive structural characteristics, the material delivers superior conductivity of 123 S·cm⁻¹ and a high EMI shielding efficiency of 56 dB, while exhibiting stable durability for advanced flexible wearable sensor devices. This work pioneers a novel platform for designing self-healing materials with advanced tunable functionalities, offering transformative potential for EMI shielding and sensor technologies.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhenji Zhou,Siqi Li,Hai Jiang,Xinyu Tan,Weimin Xia,Jinli Li,Shaoyun Huang
Tuning work function/roughness of BC tribological layers using BTO@PDA@Ag hybrid NPs. • This work enables advanced nanoenergy devices for energy harvesting and self-powered sensing. • The TENG supplies power for electronics, monitors human movement and saves indoor circuit energy. Bacterial cellulose (BC) represents a sustainable, low-cost, and biocompatible natural polymer, which serves as an ideal substrate for fabricating triboelectric nanogenerators (TENGs). Nevertheless, its intrinsic work function restricts the upper limit of device output performance. Herein, strawberry-like BaTiO₃ (BTO)@polydopamine (PDA)@Ag hybrid nanoparticles are incorporated into BC substrates, and a BC/BTO@PDA@Ag composite triboelectric layer with tunable work function and surface roughness is fabricated via vacuum-assisted filtration. Benefiting from precise regulation of triboelectric charge density and effective contact area of the composite film, charge transfer between the composite membrane and P(VDF-TrFE) film is greatly promoted. The as-prepared TENG achieves an open-circuit voltage ( V oc ) of 12.92 V, a short-circuit current ( I sc ) of 1.38 μA, and an output power density of 41.60 μW/cm 2 . It can directly drive small electronic components such as LEDs without external charging capacitors and realize real-time perception of various human body motions. Furthermore, an intelligent indoor energy-saving control system is developed based on this TENG. The system judges the presence or absence of indoor occupants to switch the on–off state of indoor circuits automatically. This work delivers a feasible strategy for developing next-generation nanoenergy devices targeted at energy harvesting and self-powered sensing applications. Download: Download high-res image (251KB) Download: Download full-size image
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Sustainable Chemistry and Pharmacy
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2026
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IF 6.7
Zi-Yi Wang,Yun-Hui Hu,Bin-Yu Gao,Xu Han,Jia-Hao Wang,Yong-Jun Yuan
MoO 3 has been recognized as a potential photocatalyst for photocatalytic ammonia synthesis from N 2 in sacrificial reagent assisted half-reaction system, but is lacking in both sluggish kinetics of N 2 reduction due to the absence of efficient active sites and low practicality originated from high cost sacrificial reagent. Herein, aiming to simultaneously bolster N 2 reduction reaction kinetics and improve practicality, oxygen vacancy-enriched MoO 3-x nanoplates was prepared as photocatalyst for green photocatalytic ammonia synthesis by using abundant cellulose in nature as the sacrificial reagent. Under light irradiation, MoO 3-x photocatalysts simultaneously achieve ammonia production and the conversion of cellulose into high-value chemicals, and the highest NH 3 generation achieves 21.4 μmol g -1 ·h -1 under 300 W Xe lamp irradiation in cellulose solution. The excellent photocatalytic activity of MoO 3-x can be ascribed to the positive role of oxygen vacancy, which provides abundant active sites for ammonia synthesis. Meanwhile, the oxygen vacancy induces the generation of Mo 5+ in MoO 3-x , which inhibits the reduction of MoO 3-x to water-soluble H x MoO 3 , resulting in the high structure stability of MoO 3-x . This work provides new insight for the development of defect-engineered photocatalysts for green ammonia synthesis coupled with sustainable cellulose valorization.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Yunhao Song,Yihui Lin,Shuangshaung Li,Xueping Huang,Na Wen,Jinlin Long,Ying Wang,Pengzhao Wang,Tengfei Lin,Xunbin Yu,Shiyun Lu
Wound infections caused by bacterial invasion significantly impair tissue regeneration and prolong healing. While injectable hydrogels show promise for wound management, their clinical application is limited by pH sensitivity in infected wound microenvironments. In this study, we successfully developed a novel pH-independent antibacterial hydrogel (FHAg) via hydroxyethyl cellulose (HEC)-guided self-assembly of Fmoc-Glu-OMe and in situ synthesized silver nanoparticles (AgNPs). The HEC matrix provides a stable structural scaffold for the hydrogel, promotes π-π stacking self-assembly, and confers exceptional stability within a broad pH range (3.0–7.4), effectively overcoming the pH-sensitivity limitation of conventional hydrogels in acidic wound microenvironments. The hydrogel exhibited exceptional biocompatibility, potent antibacterial and antibiofilm activity in vitro. In vivo MRSA -infected rat wound model revealed two key advantages: 99.9% bacterial eradication efficacy and accelerated wound healing within 12 days. This pH-resilient hydrogel platform addresses critical challenges in infected wound care, showing strong potential for clinical translation.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Shixiang Rao,Hao Jiang,Shirong Du,Zheng Li,Guoqing Wang
Marine biofouling poses a serious safety threat and significant economic losses to offshore infrastructure. Although hydrogels have made considerable progress in marine antifouling, developing antifouling hydrogels that combine high strength and efficiency remains a challenge. In this study, a highly tough three-dimensional network composite hydrogel was designed by introducing cellulose nanofibers (CNF)-functionalized molybdenum disulfide (MoS 2 ) nanosheets (MoS 2 @CNF). Herein, cellulose nanofibers are employed as a green and effective exfoliation assistant to fabricate well-dispersed MoS₂@CNF nanosheets, which exhibit a sterilization rate of up to 99.9% under near-infrared (NIR) irradiation. The as-synthesized hydrogel exhibits a tensile strength of 6.42 MPa and a toughness of 20.16 MJ/m 3 , significantly exceeding the strength of previously reported antifouling hydrogels, while also demonstrating low swelling rates and seawater stability. Furthermore, the as-prepared hydrogel demonstrated outstanding anti-protein adhesion rates (>99.9%) and excellent anti-algae adhesion rates (>99.9%), with fouling coverage of only 0.10% during a 90-day real sea trial, showcasing its strong antifouling efficacy. This work provides a new strategy for developing green marine anti-fouling hydrogels that combine great mechanical strength with durable antifouling functionality.
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CARBOHYDRATE POLYMERS
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2026
·
IF 13.2
Yiying Wei,Bo Cong,Xiaopu Ji,Dangyang Wang,Jinghui Hu,Zonglei Mou,Haiqing Song,Yue Zhi,Yushu Liu,Guofeng Zhang,Wan Ru Sun,Pingyu Wang,Deqiang Wang,Shuyang Xie,Ranran Wang
Flexible wearable sensors have garnered significant attention in recent years and exhibit promising application potential in the field of healthcare. Conductive hydrogels have emerged as ideal materials for the development of flexible wearable sensors due to their tunable structural properties, mechanical flexibility, and ease of processing. Nevertheless, most hydrogels are primarily engineered for detecting physiological signals, such as movement and electromyography (EMG), yet lack therapeutic functionalities. In addition, Previous reported hydrogels fabricated from synthetic polymers may retain residual small-molecule monomers, posing cytotoxicity risks. Herein, we report a multifunctional conductive hydrogel composed of carboxymethyl cellulose (CMC), polydopamine (PDA), and polypyrrole-polydopamine-MnO x nanoparticles (P-NPs), designed for concurrent motion monitoring, electromyography (EMG) signal detection, and photothermal therapy. The hydrogel was synthesized through a one-step amidation/oxidative polymerization approach, yielding an interpenetrating dual-network architecture with enhanced mechanical strength and tissue adhesion relative to single-network systems. The incorporation of P-NPs imparts high electrical conductivity, enabling real-time monitoring of physiological signals (e.g., joint movement, muscle activity), as well as effective photothermal conversion under near-infrared (NIR) irradiation. Notably, the hydrogel facilitates on-demand photothermal therapy to mitigate muscle fatigue upon detection of abnormal EMG signals, offering a strategy to prevent exercise-induced injury. Owing to its excellent biocompatibility and stability, the CMC/PDA/P-NPs hydrogel represents a promising platform for next-generation wearable devices integrating diagnostic and therapeutic functions.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121733
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IF 7.5
Qing Yang,Yanmei Deng,Shuangjiang Li,Xiliang Li,Tingyan Ye,Yi Liu,Yunfei Zhi,Shaoyun Shan
The conversion of CO 2 into cyclic carbonates is crucial for achieving carbon neutrality and enabling resource recycling. Developing efficient heterogeneous catalysts from renewable biomass is a key direction in green catalysis. This study designed a green and efficient heterogeneous catalyst (MCA-PIL) by acetylating bamboo-derived cellulose to construct a porous cellulose acetate support, followed by immobilization of 1-methyl-3-allylimidazolium bromide. The catalyst was systematically characterized using FTIR, XPS, solid-state 13 C NMR etc., which confirmed its chemical structure, hierarchical porosity, and thermal stability. Under optimized conditions (120 ℃, 1.5 MPa CO 2 , 8 h), MCA‑PIL achieved a 99 % yield of chloropropene carbonate from CO 2 and epichlorohydrin without solvent or co-catalyst. The catalyst exhibited broad substrate scope across various epoxides and maintained high activity over five consecutive cycles. Kinetic studies indicated first-order reaction kinetics with an apparent activation energy of 48.35 kJ·mol −1 . Experimental and density functional theory (DFT) analyses revealed a synergistic three-step mechanism: cooperative activation of the epoxide and CO 2 by surface hydroxyl groups and the imidazolium ring, followed by Br - -induced ring-opening, CO 2 insertion, and cyclization to form the product with concurrent catalyst regeneration. This work provides new design principles for biomass‑based catalysts and demonstrates a synergistic strategy integrating CO 2 valorization with renewable material development.
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危险品化学品经营许可证（带存储）