MACROMOLECULAR RAPID COMMUNICATIONS
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2025
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IF 4.3
Shaowei Wang,Kun Qian,Zekai Mei,Wangwang Zhu,Zhaobing Zhou,Mingqiang Ye,Yihui Zhou,Shuijian He,Shaohua Jiang,Jingquan Han
The rapid advancement of wearable flexible electronics has heightened the demand for hydrogel materials that combine mechanical robustness with electrical conductivity. Herein, the TEMPO-oxidized cellulose nanofibers-Graphene nanosheets/poly(vinyl alcohol)-sodium alginate-tannic acid (TOCN-GN/PVA-SA-TA, TGG) composite hydrogel fibers are prepared by microfluidic spinning technology to solve the bottleneck problems of poor dispersion of GN and imbalance of mechanical-conductive properties of traditional hydrogels. TOCN, acting as a biotemplate, effectively inhibits GN agglomeration via hydrogen bonding and mechanical interlocking, thereby enhancing GN dispersion and facilitating the formation of 3D conductive networks within hydrogel fibers. The optimized TGG fibers achieved a tensile strength of 0.96 MPa, 150% elongation at break, and electrical conductivity of 2.66 S m −1 , while exhibiting enhanced energy dissipation and fatigue resistance. As strain sensors, TGG fibers demonstrated high sensitivity (gauge factor is 1.81 at 40–100% strain) and rapid response (≈0.3 s), enabling precise monitoring of joint movements, facial micro-expressions, and swallowing actions. Furthermore, PDMS-encapsulated textile sensors enabled encrypted Morse code transmission, demonstrating innovative potential for next-generation flexible electronics in health monitoring and human-machine interfaces.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xinyu Wang,Tianren Li,Chunrui Zhao,Zian Fang,Mingyu Li
The selective conversion of peroxymonosulfate (PMS) to singlet oxygen ( 1 O 2 ) critically depends on precise electronic structure engineering of the catalysts. The PMS electron-donating pathway enables 1 O 2 generation, but the high energy barriers associated with the initial intermediate *SO 5 •− formation result in an unsatisfactory 1 O 2 yield. Herein, Co-doped ZnO was designed by calcination of zeolitic imidazolate framework. Co doping significantly improved the visible-light response, enhanced the photogenerated carrier separation and migration of ZnO, and increased the ZnO valence band potential. These effects promoted the electron-donating reaction of PMS to produce 1 O 2 . The optimized Co-ZnO-3/vis/PMS system exhibited a 27.2-fold higher methylene blue degradation rate constant (k = 0.9871 min⁻¹) with 43.7 % total organic carbon removal within 5 min. In addition, the developed 1 O 2 -dominated oxidation system removed 83.1 % of chromaticity, 59.9 % of total phenol, and 24.8 % of chemical oxidation demand from the coking wastewater tailwater. This work provides a pathway for tailoring 1 O 2 -dominated reactive species for contaminant removal, providing a theoretical guideline for the deep treatment of coking wastewater tailwater.
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ACTA PHYSICO-CHIMICA SINICA
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2025
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IF 13.5
Shiyi Chen,Jialong Fu,Jianping Qiu,Guoju Chang,Shiyou Hao
The coronavirus disease 2019 (COVID-19) pandemic has increased the necessity of medical masks, and to date, many waste masks have been discarded without being reprocessed, causing environmental harm. PET, a commonly used plastic product, presents certain hurdles to its natural degradation. In this work, waste medical masks were converted into carbon quantum dots (MCQDs) with blue fluorescence emissions using a simple solvothermal process and then doped into BiOBr/g-C 3 N 4 composite material to construct S-scheme heterojunctions for PET degradation. Density functional theory (DFT) calculations revealed that an interfacial electric field (IEF) was formed between g-C 3 N 4 and BiOBr. The findings demonstrate that the MCQDs, as a cocatalyst for electron transmission and storage, encourage S-scheme heterojunctions to further separate photogenerated electrons and holes. Levofloxacin (LEV) was used as a molecular probe to visually compare the catalytic activities of various catalysts. These catalysts with different photocatalytic activity were then used to degrade PET. The findings demonstrate that the degradation efficiency of PET over the BiOBr/g-C 3 N 4 /3MCQDs in seawater is 39.88 ± 1.04% (weight loss), which is 1.37 times higher than that of BiOBr/g-C 3 N 4 , and also better than those reported in most of the literature. Free radical capture tests, electrostatic field orbital trap high-resolution gas chromatography-mass spectrometry (HRGC-MS), and ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) experiments uncovered and briefly revealed the key products in the photocatalytic degradation of PET, as well as the relevant mechanism of photocatalytic degradation of PET. The degradation products are expected to become precursors for the further production of polymers and medicines, etc . This study offers fresh perspectives for the creation of innovative photocatalysts for the ecologically benign breakdown of PET, which helps to further lessen environmental damage caused by microplastics (MPs) and enhance resource sustainability.
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POLYMER DEGRADATION AND STABILITY
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2025
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IF 7.4
Chenjiao Wang,Peng Sun,Chenhao Wang,Qian Wei,Yanjie Wang,He Guo,Yue Liu,Tiecheng Wang
High-polymer biomass is reactively inert due to its large molecular weight and stable structure, and the depolymerization is an effective strategy to enhance its utilization. Herein, a typical dielectric barrier discharge (DBD) system was established to realize efficient depolymerization of cotton cellulose, where the degree of polymerization declined from 2329 to 430, decreased by 81.5%. H 2 O 2 , O 3 , •OH, O 2 • − and 1 O 2 dominated the depolymerization process by attacking the β -(1,4) glycosidic bonds and hydrogen bonds in cellulose molecules. In addition, the treated cotton cellulose displayed smaller blocks, rougher surface and poor thermal stability, and the crystallinity of cellulose decreased by 15.4% after DBD pretreatment. Interestingly, there were no obvious chemical changes in the main structure of cellulose, only with slight release of substances such as monosaccharides and alcohols. Therefore, these indicated that DBD process achieved the reduction of polymerization and crystallinity while ensuring that the original cellulose structure was not damaged, and was an efficient and alternative pretreatment method for high-polymer biomass.
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CARBOHYDRATE POLYMERS
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2012
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IF 3.628
Su Yixue,Chu Bin,Gao Yuan,Wu Chaoxi,Zhang Lingmin,Chen Peng,Wang Xiaoying,Tang Shunqing
In order to improve bioactivity of agarose, we modified agarose by carboxylation and grafting dopamine. Under alkaline condition, carboxylated agarose was prepared using 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation system by oxidizing C 6 hydroxyl on d -galactose ring into carboxyl group, and the maximum value of the degree of carboxylation reached 30%. With the increase of the amount of oxidant, the molecular weight of the carboxylated agarose decreased to 4 kDa by gel permeation chromatography (GPC) measure. Carboxylated agarose reacted with dopamine through EDC condensation reaction to obtain agarose grafting dopamine (Ag-g-DA), and the grafting rate of dopamine was determined to be 9.3% by UV spectroscopy at 280 nm. The structures of these modified agaroses were determined by FT-IR and 13 C NMR. Both carboxylated agarose and Ag-g-DA showed no cytotoxicity and promoted cell-adhesiveness.
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TALANTA
·
2025
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IF 6.1
Mei Cui,Wanling Zheng,Xiaomin Zhang,Jingru chen,Yuanteng Xu,Liangqia Guo
The cascaded catalytic reactions of glucose oxidase (GO x ) and horseradish peroxidase (HRP)-like nanozymes have been extensively used for the colorimetric detection of serum glucose. Nevertheless, the usage of biological enzyme and the adjustment of buffer pH due to the inconsistent pH of this two-step catalytic reactions are involved during the detection of serum samples. Herein, the photocatalysis of cyanamide-functionalized carbon nitride (CACN) with high efficient electron-hole separation and photoelectron storage ability was utilized for non-enzymatic colorimetric sensing of serum glucose without the need to adjust the buffer pH and the usage of biological enzyme. Under the irradiation of visible light, glucose was utilized as electron donor to quench the photogenerated holes of CACN and to facilitate the reduction of 2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) by the photoelectrons into orange-yellow product (formazan). The absorbance of formazan at 470 nm showed a linear response toward glucose over 1.8 to 22.0 mmol L -1 with the limit of detection of 0.27 mmol L -1 (S/N = 3). Furthermore, the digital image colorimetric (DIC) method was also developed by a portable mobile. Finally, the colorimetric and DIC methods were utilized for the detection of serum glucose with high accuracy, reproducibility and recovery. This work not only proposed a new strategy for the colorimetric sensing of serum glucose but also extended the photocatalysis of carbon nitride application in the field of biosensing.
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CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Chuhang Liu,Xiaojie Shi,Bo Lin,Zekun Song,Feng jiang,Mei-Chun Li,Chaozheng Liu,Changtong Mei
3D printing of cellulose-based porous materials with tailored architecture is of significant interest for advanced thermal insulation applications. However, most existing approaches lack internal hierarchical porosity, thereby limiting their insulation efficiency. Here, we propose an emulsion gel ink strategy based on high internal phase Pickering emulsions (HIPPEs) stabilized by lignin-containing cellulose nanofibrils (LCNFs) and reinforced with sodium alginate (SA). This approach integrates emulsion templating with direct ink writing (DIW), enabling simultaneous control of macroscopic geometry and microscopic pore structure. LCNFs with tunable lignin content and surface charge effectively stabilize oil–water interfaces, while SA provides a viscoelastic matrix, ensuring high printability. After freeze-drying, the printed porous monoliths exhibit low density (~17.7 mg·cm −3 ), high porosity (> 98 %), and hierarchical pores templated by emulsified droplets and LCNF-SA network. The resulting structures combine excellent mechanical resilience and low thermal conductivity (~0.031 W·m −1 ·K −1 ). This work provides a scalable route to bio-based 3D-printed porous materials with programmable porosity and multifunctional performance.
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Advanced Science
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2025
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IF 14.1
Jinghui Wang,Xiaoyu Liu,Yujiao Du,Yepu Chen,Jieyi Guo,Linyuan Fan,Min Tang,Xiaofeng Qiao,Yuanjie Zhu,Zhiyang Zhang,Chaojie Dong,Lizhen Wang,Yubo Fan
The mechanism of human tactile perception offers inspiration for developing a high-performance artificial sensory system. Pacinian corpuscles (PCs) allowing high-frequency tangential sensitivity that endows humans with the ability to perceive multidimensional tactile stimuli. However, replicating similar high-frequency and tangential perception as that of PCs in artificial systems remains a significant challenge. Here, an artificial PC (APC) from ultralight aerogel with a multilayer-stacked and anisotropic structure analogous to that of PC via a multi-directional freeze-drying method is reported. The APC sensor with radial-axial anisotropy exhibits tangential sensitivity (1022 kPa −1 ), detects multidimensional tactile stimuli, and identifies stick-slip states with high precision. By mimicking PC clusters, the APC sensor system achieves spatiotemporal sensing capabilities for discriminating frictional patterns (static, sliding, or rolling) and tracking slip. A robot equipped with the APC sensory system possesses enhanced tactile perception for diverse tactile events in active (100% accuracy) and passive (98.18% accuracy) interaction with humans. It is found that high-frequency components are crucial for stick-slip detection, providing insights into the underlying tangential tactile sensing mechanisms of PCs. The work exemplifies a bidirectional enhancement of understanding between technological innovation and biological mechanisms.
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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
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2025
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IF 2.4
Taiping Xie,Shengli Xie,Yuxuan He,Kailin Xu,Jin Qian
BACKGROUND Antibiotic pollution in aquatic environments poses significant threats to human health and ecosystems by promoting the spread of antibiotic resistance. RESULTS This study investigates the use of MoSe 2 -based bimetallic composite selenides (MoSe 2 /CoSe 2 and MoSe 2 /MnSe) to activate peroxymonosulfate (PMS) for the oxidation of levofloxacin (LEF), a model fluoroquinolone antibiotic. The composites were synthesized via a solvothermal method and characterized using SEM, TEM, XRD, and XPS, confirming the formation of heterojunction interfaces and the presence of active metal sites. Catalytic performance tests demonstrated that MoSe 2 /CoSe 2 and MoSe 2 /MnSe significantly enhanced LEF degradation, achieving removal efficiencies of 92.98% and 89.4%, respectively, compared to 49.07% with MoSe 2 alone. Optimization of reaction parameters revealed that PMS dosage, catalyst dosage, and pH critically influence degradation efficiency. Reusability tests confirmed the catalysts' stability over multiple cycles with minimal loss in activity. Electron paramagnetic resonance (EPR) and radical quenching experiments identified sulfate radicals (SO 4 •- ) as the primary active species driving LEF degradation. CONCLUSION This work provides a robust theoretical foundation for the application of SR-AOPs in wastewater treatment, highlighting the potential of MoSe 2 -based composites in mitigating antibiotic contamination. © 2025 Society of Chemical Industry (SCI).
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yan Sun,Ranxin Li,Qiubo Wang,Wen-da Oh,Mingjie Huang,Xiaohui Wu,Tao Zhou
The concept of converting biowaste to energy is popular worldwide; however, overcoming the trade-off between bio-oil recovery and obtaining functional biochar remains challenging. This study investigated the effects of three transition metal ions (Mn 2+ , Cu 2+ and Fe 2+ ) throughout the entire process of recovering 5-hydroxymethylfurfural (5-HMF) from forestry waste and on the catalytic abilities of biochar derived from the oil-extracted residue. The Cu 2+ , Fe 2+ , and Mn 2+ ions significantly increased 5-HMF yields by 93- to 158-fold compared to the metal-free control. However, only marginal improvements in the catalytic ability of the residue-derived biochar for persulfate activation were observed for Cu- or Fe-doped biochar, despite the general benefit of transition metal doping for biochar functionalization. Interestingly, a dual Mn-mediated promotion was achieved beyond enhancing 5-HMF production. The Mn-doped biochar (Mn-Biochar) exhibited excellent peroxydisulfate (PDS) activation capability, enhancing the degradation of the antibiotic sulfamethoxazole (SMX) by 6.6- to 15.0-fold. Characterizations revealed that incorporated nitrogen was responsible for this enhancement. N-doping transformed the Mn species into MnO, which tripled the Mn loading capacity and enhanced the electrical conductivity of the biochar. The formed Mn-N x structure in the biochar (Mn-N-FBBC) facilitated polarization of the O O bond and cleavage of the S O bond in PDS, generating 1 O 2 for SMX degradation. Life cycle assessment (LCA) indicated that this dual Mn-mediated process for 5-HMF recovery and biochar production offers synergistic benefits, realizing the “waste-resource-material-treatment” paradigm in biomass conversion.
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Science Advances
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2025
·Vol. 11
·期 48
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IF 12.5
Wenbo Liu,Lu Li,Menggang Li,Zongqiang Sun,Youxing Liu,Shaojun Guo
Mg-CO 2 battery has emerged as a promising battery technology by harnessing greenhouse gas as an active material. However, its development is greatly hindered by sluggish CO 2 conversion kinetics, resulting in high overpotentials and poor reversibility. Herein, we report a class of 2,2,6,6-tetramethylpiperidoxyl (TEMPO) homogeneous catalyst to regulate CO 2 adsorption and optimize reaction pathways through a quantum tunneling effect induced by electron transfer from the TEMPO free radical to CO 2 that classical electron transfer mechanisms cannot overcome. This quantum tunneling effect not only enables CO 2 reduction at lower voltage but also regulates the CO 2 adsorption environment, leading to the alternated reaction pathway for the formation of flower-like MgC 2 O 4 as the discharge product, rather than the dense MgCO 3 typically formed in traditional models. The TEMPO-based Mg-CO 2 batteries achieve an exceptional discharge voltage of 1.1 volts and a charge voltage of 1.3 volts, with stable cycling performance for over 450 hours, representing the best-reported performance among Mg-CO 2 battery systems to date.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Wenbo Che,Yufeng Miao,Yifan Liu,Runxuan Wang,John Moyo,Youming Yu,Wenhui Bao,Yunyan Peng
Stimulus-responsive actuators play a crucial role in the next-generation intelligent systems. However, challenges such as complex fabrication processes, limited sustainability, and poor tolerance to complex deformations remain. This study introduces a sustainable “top-down” self-splicing strategy to fabricate spliced transparent wood film (TWF) for programmable hygromorphic soft actuators. Natural wood was subjected to delignification followed by TEMPO-mediated oxidation, yielding TWF with exceptional hygroscopicity. Two adhesive-free self-splicing methods: biomimetic “Mortise and Tenon” interlocking and self-adhesion using oxidized wood fibers enable arbitrary shaping and large-scale integration of spliced TWF. Since hydrogen bonding dominates interfacial bonding strength, the self-spliced TWF exhibits excellent tensile strength (up to 131.8 MPa), surpassing most plastic films and TWF joined with commercial adhesives. Interestingly, benefiting from the hygroscopicity and designability of self-splicing TWF, the resulting hygromorphic soft actuator achieves continuous rapid deformation and recovery, and programmable morphing into complex configurations ( e.g. , spirals, biomimetic mimosa and petals). This adhesive-free self-splicing approach enables the scalable production of TWF and yielding soft actuators with versatile morphing capabilities, low production cost, and sustainability, highlighting their potential in soft robotics and smart materials.
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