Advanced Science
·
2025
·
IF 14.1
Runhe He,Hao Liu,Qing Gao,Dong Cai,Kuikui Xiao,Yinhang Zhang,Xinmin Zhang,Xianyang Cheng,Yuhui Wang,Lixing Kang,Huagui Nie,Yatao Liu,Zhi Yang
Sulfurized polyacrylonitrile (SPAN) represents a highly promising cathode material for lithium–sulfur (Li–S) batteries, leveraging a solid-solid sulfur conversion mechanism. However, persistent interfacial side reactions and sluggish redox kinetics in SPAN cathodes compromise the electrochemical performance. Here, quaternized chitosan (QCS) is employed as a functional agent to stabilize the SPAN cathode electrolyte interphase (CEI). The positively charged quaternary ammonium groups selectively adsorb PF 6 – anions, modifying the Helmholtz layer structure and facilitating the formation of an anion-derived CEI enriched with LiF. Consequently, the SPAN@QCS-1.0% cathode delivers a high discharge capacity of 1499 mAh g −1 at 0.2 C, an outstanding rate capability of 902 mAh g −1 at 10 C, and a prolonged cycle life exceeding 1500 cycles at 1 C. Under practical conditions of high sulfur loading (12.0 mg cm −2 ) and lean electrolyte (E/S ratio = 5 µL mg −1 ), the SPAN cell achieves a high areal capacity of 17.1 mAh cm −2 , surpassing that of conventional lithium–ion batteries (≈4 mAh cm −2 ) by more than fourfold. Furthermore, a 0.9 Ah pouch-cell prototype demonstrates stable cycling for over 30 cycles. The interface strategy provides a facile and effective approach to developing high-performance SPAN-based Li–S batteries.
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产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2025
·
IF 6.2
Mingyu Cui,Suiyuan Huang,Jianwei Xin,Panpan Ma,Liping Heng,Yuqi Zhang,Ji-Jiang Wang
Dexamethasone sodium phosphate (DSP) and betamethasone sodium phosphate (BSP) are synthetic corticosteroids used for anti-inflammatory and immunosuppressive purposes. However, prolonged use may cause severe side effects, necessitating sensitive detection methods. Conventional techniques often suffer from complexity, signal interference, and a lack of real-time capability. This study develops molecularly imprinted 2D photonic hydrogels (DSP/BSP-MIPH) for selective, sensitive, and regenerable detection of DSP and BSP. The DSP-MIPH sensor exhibits swelling in DSP solution, enabling linear detection in three ranges (0.1–9, 10–100, and 100–1000 µ M ) with a limit of detection (LoD) of 41 nM. BSP-MIPH shows shrinkage upon binding, with linear responses in 0.05–1 and 5–1000 µ M ranges and a LoD of 28 n M . The limits of quantitation are 1.2 µ M and 146 n M for DSP and BSP, respectively. The opposite volume changes stem from distinct hydrogen bonding interactions between drug functional groups and the hydrogel network. The sensors successfully quantify DSP and BSP in commercial injections, achieving recovery rates of 96.7%–109.5% for DSP and 97.9%–104.8% for BSP, with RSDs 3.91%–6.21% for DSP and 3.57%–5.76% for BSP. These results demonstrate that the MIPH sensors provide accurate, reliable, and straightforward detection for DSP and BSP in real samples, giving a promising strategy for precise hormone drug monitoring.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Lihuan Wang,Haijun Lv,Lifang Liu,Qi Zhang,Pawel Nakielski,Yang Si,Jianping Cao,Xiaoran Li,Filippo Pierini,Jianyong Yu,Bin Ding
The poor intrinsic mechanical properties of chitosan hydrogels have greatly hindered their practical applications. Inspired by nature, we proposed a strategy to enhance the mechanical properties of chitosan hydrogels by construction of a nanofibrous and cellular architecture in the hydrogel without toxic chemical crosslinking. To this end, electrospun nanofibers including cellulose acetate, polyacrylonitrile , and SiO 2 nanofibers were introduced into chitosan hydrogels by homogenous dispersion and lyophilization. With the addition of 30% cellulose acetate nanofibers, the cellular structure could be maintained even in water without crosslinking, and integration of 60% of the nanofibers could guarantee the free-standing structure of the chitosan hydrogel with a low solid content of 1%. Moreover, the SiO 2 nanofiber-reinforced chitosan (SiO 2 NF/CS) three-dimensional (3D) matrices exhibit complete shape recovery from 80% compressive strain and excellent injectability. The cellular architecture and nanofibrous structure in the SiO 2 NF/CS matrices are beneficial for human mesenchymal stem cell adhesion and stretching. Furthermore, the SiO 2 NF/CS matrices can also act as powerful vehicles for drug delivery. As an example, bone morphogenetic protein 2 could be immobilized on SiO 2 NF/CS matrices to induce osteogenic differentiation. Together, the electrospun nanofiber-reinforced 3D chitosan matrices exhibited improved mechanical properties and enhanced biofunctionality, showing great potential in tissue engineering.
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DOI
PubMed
高影响因子
MATERIALS SCIENCE FORUM
·
2024
·
IF 0
Ha Nguyen Phuong,Duyen Nguyen Thu,Nguyen Thanh Liem,Vu Anh Doan
Chitosan (CS), with its non-toxic and antibacterial properties, and Poly(ε-caprolactone) (PCL), known for its biodegradability and biocompatibility, are crucial materials in medical applications. This study proposed a solution utilizing electrospinning to manufacture fibers with nanometer-sized core-shell structures from these materials, with CS serving as the fiber core and PCL forming the shell. The influence of manufacturing technology parameters on fiber size and morphology was thoroughly researched and investigated. The solvent system used, Chloroform/Dimethylformamide (DMF), ensured complete solubility, viscosity control, conductivity, and proper solvent evaporation. Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) results clearly demonstrated the morphology and internal structure of the nanofibers. The water contact angle (WCA) measurements of the fiber membrane showed almost no significant change over time, indicating strong hydrophobicity of the nanofibers. Additionally, the FTIR spectrum revealed distinct core-shell layers without any blending between them, while DSC analysis showed the thermal properties of fiber membranes. In summary, the electrospinning of nanofibers proved to be stable, producing thin fibers with an average diameter of approximately 400 nm. These findings are expected to significantly enhance the applicability of CS/PCL nanofibers across various fields, including healthcare and smart agriculture.
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DOI
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2024
·Vol. 39
·期 6
·1621-1627
·
IF 1.3
Li Jie,Qi Yingxia,Song Feiyu,Dai Fuli,Qiu Tong,Zhang Xueqiong
We developed a new preparation to protect probiotic cells from adverse environmental conditions and improve their livability, which is called Lactobacillus casei-Sodium alginate-Chitosan (LSC). The LSC was prepared by mixing probiotics with sodium alginate-chitosan sol. The preparation contained complex calcium ions, which were released in the acidic environment of gastric juice, thus crosslinking to form in-situ gel. Different proportions of sodium alginate-chitosan were prepared to add to simulate gastrointestinal fluid to get the best ratio. The optimal ratio of LSC preparation was compared with traditional gel microspheres to observe the survival effect of probiotics in gastrointestinal fluid environment. Compared with sodium alginate sol, the porosity of sodium alginate-chitosan sol is lower, which is beneficial to the protection of probiotics. When the ratio of chitosan to sodium alginate is 1.5: 1.5 ( w/v ), the protective effect is the best. The protective ability of LSC is 64 times that of traditional microspheres, and it has the potential of synergistic anti-tumor. A probiotic preparation with simple preparation process and better protection effect compared with traditional microspheres was prepared, which has joint anti-tumor potential.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Qing Wu,Bolin Xiao,Yating Li,Renjie Yao,Dan Jin,Yanyang Lei,Dong Yang,Jianfeng Zhu
This paper initially examines the feasibility and effectiveness on interfacial adhesion of composites when grafting nanoparticle-structured polydopamine (PDA) and chitosan around carbon fiber periphery. The resulting interfacial shear strength was maximized as 92.3 MPa, delivering 50.1 % and 15.7–16.2 % gains over those of control fiber and only polydopamine nanospheres (PDA NPs ) or only chitosan modified fiber composites. Measuring surface morphology and thermal stability of fibers found that abundant PDA NPs well adhered with the help of chitosan, highlighting nanoscale size effects and intrinsic adhesiveness of PDA. Under good wettability , rich and dense interfacial interactions (covalent and hydrogen bond , electrostatic interaction , and π conjugation) caused by PDA NPs /chitosan coating provides impetus for effective stress transfer. Additionally, the stable “soft-rigid” combination of chitosan and PDA NPs adds the efficiency of crack passivation. As such, it is hoped that this work could fully explore the possibility of PDA geometry in interphase engineering of fiber composites.
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 2
·024501
·
IF 3.9
Saad Ahmed,Zhengyuan Tao,Hao Zhang,Naveed Ahmed,Haroon Gulzar,Jianli Wang
In this study, a one-step method was enforced for the phosphorylation of chitosan (CS) using ATMP, and later amino functionalized multiwalled carbon nanotubes (MWCNTs-NH2) were used for the fabrication of PCS/N-MWCNTs membranes. The phosphorylation of CS and later PCS/N-MWCNTs nanocomposite membranes were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). They were also evaluated for their mechanical properties, water uptake, area swelling ratio, ion-exchange capacity (IEC), and proton conductivity. Interfacial interaction among an -NH2 group of MWCNTs and -phosphonic acid as well as the -NH2 group of PCS provided extra sites for proton transfer, thus improving the proton conductivity of PCS/N-MWCNTs membranes. These results revealed that the incorporation of N-MWCNTs into PCS chains lowers PCS chain mobility and ultimately improved the thermal and mechanical properties of the composite membranes. The proton conductivity of the composite membrane with 5 wt.% of N-MWCNTs at 80 °C was 0.045 S.cm−1. Thus, PCS/N-MWCNTs nanocomposite membranes as a PEM can be used in fuel cells. With this advantage, the N-MWCNTs-filled hydrogen fuel cell outperforms compared to PCS filled membrane.
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DOI
高影响因子
Advanced Sensor Research
·
2023
·Vol. 2
·期 6
·2200086
·
IF 0
Si Wang,Bohao Liu,Xingdong Feng,Rui Pan,Yuanlingyun Cai,Renyan Zhang,Mingbo Pu,Xiaoliang Ma,Xiong Li,Huiling Tai,Xiangang Luo
High flexibility, porosity, and antibacterial activity are extremely desired for wearable health monitoring, which is beneficial to simultaneously promote wearing comfort and safety. In this study, an antibacterial nanofibers-based triboelectric generator (AN-TENG) composed of the flexible chitosan/polyvinylpyrrolidone modified with halloysite nanotubes (CTS/PVP/HNTs) nanofibers and cube-arrays structured Ecoflex film is proposed for simultaneously energy harvesting and self-powered human motion monitoring. The open-circuit voltage (280 V), short-circuit current (3.98 μA), and transferred charge (51 nC) of the CTS/PVP/HNTs nanofibers TENG at the optimal compound concentration are increased by 90.8%, 86.92%, and 96.2%, respectively, compared to the CTS/PVP nanofibers one (size: 3 cm × 3 cm, mechanical force: 10 N @1 Hz), revealing good real-time monitoring ability for human wrist, elbow, and finger motion. An antibacterial test is carried out to evaluate the antibacterial activity and the antibacterial rate of the nanofibers against Escherichia coli (ATCC 8739) and Staphylococcus aureus (ATCC 6538) based on the current national standard GB/T 31402–2015, indicating good antibacterial properties of the nanofibers. This research offers an ingenious strategy to establish an antibacterial nanofibers-based TENG for self-powered motion monitoring and energy harvesting and offers a new insight to improve the practical security of wearable electronic devices.
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DOI
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Meiling Zhang,Shuai Jiang,Fuyi Han,Mengmeng Li,Ni Wang,Lifang Liu
Attributed to low cost, renewable, and high availability, cellulose-based aerogels are desirable materials for various applications. However, mechanical robustness and functionalization remain huge challenges. Herein, we synthesized a recoverable, anisotropic cellulose nanofiber (CNF) / chitosan (CS) aerogel via directional freeze casting and chemical cross-link process. The chitosan was performed as strength polymers to prohibits the shrinkage and retains the structural stability of 3D cellulose nanofiber skeleton, endowing the composite aerogel with satisfactory deformation recovery ability (without loss under 60 % stress cycled 100 times). The CNF/CS composite aerogel has ultralow density (∼8.4 mg/cm 3 ), high temperature-invariant (above 300 °C) and high porosity (98 %). The CNF/CS aerogel demonstrates anisotropic thermal insulation properties with low thermal conductivity (28 mWm −1 K −1 in rational direction and 36 mW m −1 K −1 in the axial direction). Moreover, the composite aerogel (water contact angle ∼148°) exhibited outstanding oil/water selectivity and high absorption capacity (82–253 g/g) for various oils and organic solvents. Therefore, the multifunctional CNF/CS composite aerogels are potential materials for thermal management and oil absorption applications.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zehao Jin,Lili Wang,Kaiyuan Zheng,Qiyue Gao,Wei Feng,Shoukang Hu,Ming Yue,Xiaobiao Shan
The triboelectric nanogenerator (TENG) of natural biomaterials is a new type of energy harvesting device and can be used as a self-powered sensor, which has received extensive research and attention. In this paper, based on the biocompatibility of chitosan and chondroitin sulfate, ZnO-modified chitosan/chondroitin sulfate/ZnO TENG was prepared for research on wearable devices and sustainable power supply devices. This study employs molecular dynamics to compute the interaction energy between chitosan and ZnO molecules. Theoretical calculations have unequivocally substantiated the occurrence of a binding interaction between these two molecular entities. The effect of ZnO on chitosan/chondroitin sulfate morphology was investigated by atomic force microscopy . The chitosan/chondroitin sulfate/ZnO TENG has high flexibility and electrical output performance. It can reach 105 V and 3.3 µA of open-circuit voltage and short-circuit current. Chitosan/chondroitin Sulfate/ZnO TENG successfully converts the mechanical energy of human motion into electrical energy. Strong electrical signals are exhibited when making fists and waving fingers and wrists. The TENG is a self-powered source and lights up 70 blue light-emitting diodes (LEDs). The chitosan/chondroitin sulfate/ZnO TENG has demonstrated its capabilities in energy harvesting and wearable self-powered sensors.
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2016
·
IF 4.219
Chao Liu,Huiyan Zhang,Rui Xiao,Shubin Wu
Thermogravimetric characteristics of chitin and chitosan and their potentials to produce value-added organonitrogen chemicals were separately evaluated via TG/DSC-FTIR and Py-GC/MS. Results shown that chitin had the better thermal stability and higher activation energy than chitosan because of the abundant acetamido group. Furthermore, the dominated volatilization in active pyrolysis of chitin contributed to its endothermic property, whereas the charring in chitosan led to the exothermal. During fast pyrolysis, the acetamido group in chitin and chitosan was converted into acetic acid or acetamide. Typical products from chitosan pyrolysis were aza-heterocyclic chemicals, i.e. pyridines, pyrazines, and pyrroles, with the total selectivity of 50.50% at 600 °C. Herein, selectivity of pyrazine compounds was up to 22.99%. These aza-heterocyclic chemicals came from the nucleophilic addition reaction of primary amine and carbonyl. However, main reaction during chitin pyrolysis was ring-opening degradation, which led to the formation of acetamido chemicals, especially acetamido acetaldehyde with the highest selectivity of 27.27% at 450 °C. In summary, chitosan had the potential to produce aza-heterocyclic chemicals, and chitin to acetamido chemicals.
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2010
·
IF 3.167
Yanni Zhang,Ying Yang,Tianying Guo
In this work chitosan microspheres have been prepared by ion precipitation using sodium sulfate as precipitant, and crosslinked with natural crosslinker genipin . Then the microspheres were hydrophobically modified by covalent and ion interaction grafting of stearic acid and sodium stearate respectively. Results indicated that the there were still some amount of –NH 2 groups on the genipin-crosslinked chitosan microspheres. And the contact angles for hydrophobical graft microspheres were increased greatly from 27° to 104°, which indicates stearic chains have been grafted on the surface of the microspheres even only by a simple graft process based on ion interaction. The interactions of protein with the hydrophobically modified chitosan microspheres were investigated by surface absorption method using bovine serum albumin as a model protein. And results indicated that adsorption efficiency for bovine serum albumin of the fatty chain grafted chitosan microspheres was higher than that of the prestine one distinctly, due to the additional hydrophobic interaction. And the adsorbed protein could well-off be desorbed under a general condition.
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DOI
高影响因子
危险品化学品经营许可证（带存储）