SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Han Li,Yushan Li,Huailing Diao,Haipeng Ren,Jianming Chen,Jinfeng Wang,Qingtao Liu,Xungai Wang
Wild silk cocoons are light-weight composite structures with unique properties. One such property is the intriguing CO 2 gating property (i.e., unidirectional flow of CO 2 ) exhibited by the wild Antheraea pernyi ( A. pernyi ) silkworm cocoon. This study investigated the hierarchical structural and compositional features of A. pernyi cocoons and their impact on CO 2 adsorption. For the first time, soap-film flowmeter testing method and gas permeability testing method were used to quantitatively demonstrate the A. pernyi cocoons’ CO 2 adsorption property and selectivity for gas mixture. The results showed that the multi-layered composite structure of A. pernyi cocoons, coupled with calcium oxalate crystals, play a crucial role in their CO 2 adsorption and separation performance. These findings shed light on the unique functional design of wild silk cocoons and provide a new biomimetic approach for developing materials and structures to address global challenges such as CO 2 capture and storage.
研究领域:
材料科学
·
环境科学
·
仿生学
·
气体分离
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Toxics
·
2024
·Vol. 12
·期 2
·131
·
IF 3.9
Qingxin Meng,Rong Huang,Shunhua Yang,Hui Li,Dan Yue,Xueyang Gong,Wenzheng Zhao,Yakai Tian,Kun Dong
Honey bees play a critical role as pollinators. However, their reproduction success and survival face severe threats due to the deterioration of their living environment. Notably, environmental conditions during their preimaginal stage inside brood cells can influence their immune capabilities and overall health after emergence. During the in-cell developmental stage, workers are in close contact with cocoons, which can become a source of stress due to accumulated metals. To investigate this potential threat, experiments were conducted to examine the impact of cocoons in brood cells used to rear different generations on the metal content and detoxification gene expression levels inApis cerana cerana. Our findings indicated significant differences in the layers, weight, base thickness, and metal contents like Cr, Cd, Pb, Mn, Ni, and As of cocoons in multi-generation brood cells compared to single-generation brood cells. These increases led to significant elevations in metal levels and upregulations of the four CYP450 detoxification genes in both six-day-old larvae and newly emerged workers. In conclusion, this study highlights the negative impact of cocoons in multi-generation brood cells on bee health and provides evidence supporting the development of rational apiculture management strategies for ecosystem stability.
研究领域:
昆虫学
·
环境科学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Dong Zhang,Lei Zhao,Xiaohu Cui,Xinpeng Li,Zhisong Qian,Xueyan Zhou,Zhongren Ma,Mohd Sobri Takriff,Zhiqiang Li,Ying Niu,Guilan Ma,Gongtao Ding,Zifan Wang
Hydrogels with rapid wound-healing capabilities and antimicrobial effects are gaining significant interest in related fields. Nonetheless, developing a multifunctional hydrogel wound dressing with injectable self-assembling, self-healing, antimicrobial properties, and efficient skin wound-healing capabilities remained a formidable challenge. In this experiment, we drew inspiration from silkworm cocoons' natural formation and protective mechanisms, employing a novel physical cross-linking method to create an injectable and self-healing quaternary hydrogel successfully. The hydrogel is based on a matrix of silk fibroin/silk sericin (SF/SS), with 1,2-dimyristoyl-sn-glycero-3-phosphate sodium salt (DMPG) serving as a physical cross-linking agent to form the hydrogel network structure, and the incorporation of silver nanoparticles (AgNPs) further enhances its antimicrobial capabilities. Our biomimetic hydrogel, which replicated the chemical properties of silkworm cocoons, demonstrated excellent hydrophilicity with a water contact angle that ranged from 37 to 52°. Its tensile and compressive resistance was approximately four times greater than that of a pure SF hydrogel, and its swelling performance was about three times higher than that of a pure SF hydrogel. Furthermore, the hydrogel exhibited an impressive bacterial inhibition rate of over 98 % in bacterial growth and inhibition experiments, which provided a solid foundation for accelerating wound healing. Likewise, experiments with mice and histological analyses revealed that on day 7, the expression of TNF- α and IL-1 β in the wound tissues treated with the SF/SS/AgNPs hydrogel was significantly reduced by >25 % compared to the blank control group. This reduction indicates that the hydrogel could decrease the production of inflammatory cytokines, potentially aiding in the acceleration of wound healing and mitigation of inflammation-related adverse reactions. By day 14, the wounds were healed mainly, with the wound area reduced by 17 % compared to that of the blank group. This demonstrates the significant potential of this cocoon-mimetic hydrogel in accelerating wound healing and providing wound protection.
研究领域:
生物材料学
·
医学工程
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 58
·33872-33882
·
IF 3.049
Genxing Zhu,Qi Liu,Fengyi Cao,Qi Qin,Mingli Jiao
Dyes are typical water contaminants that seriously affect water quality. In this study, silkworm cocoon derived N, O-codoped hierarchical porous carbon was successively developed via a facile pre-carbonization and chemical activation method, and characterized thoroughly by SEM, TEM, HRTEM, XRD, Raman, N2 adsorption and XPS. The as-prepared N, O-HPC showed a well-developed porous structure with an ultra-high specific surface area of 2270.19 m2 g−1, which proved to be a high-efficiency adsorbent. Batch adsorption experiments demonstrated that MB adsorption was highly dependent on contact time, initial MB concentration, temperature and initial solution pH. However, no remarkable effects of humic acid and ionic strength were observed. In the kinetic studies, the good applicability of a pseudo-second-order kinetic model was demonstrated. The adsorption isotherm study showed that a Langmuir isotherm model can describe the experimental data much more suitably with a maximum monolayer adsorption capacity value of 2104.29 mg g−1, which is among the highest in previously reported adsorbents and ascribed to multiple adsorption mechanisms including pore filling, π–π stacking interaction and electrostatic interaction between MB and N, O-HPC. Thermodynamic analyses suggested that MB adsorption onto N, O-HPC was spontaneous and endothermic. Furthermore, the as prepared adsorbent showed highly efficient adsorption for MB in tap water and synergistic adsorption performance toward MB and MO. Therefore, N, O-HPC derived from silkworm cocoon could be considered as an efficient, novel and advantageous material for wastewater remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Healthcare Materials
·
2022
·Vol. 11
·期 21
·2201397
·
IF 11.092
Shixiong Yi,Ying Zhou,Jiamei Zhang,Min Wang,Shaohui Zheng,Xiao Yang,Lian Duan,Rui L. Reis,Fangyin Dai,Subhas C. Kundu,Bo Xiao
One of the leading causes of death globally, especially in underdeveloped countries, is bacterial infection. Recently, the prevalence of infections from antibiotic-resistant bacteria has been increasing, which makes the need for innovative antibacterial wound dressings urgent. It is reported that g-C 3 N 4 -based flat silk cocoons (FSCs) with rechargeable antibacterial activity can efficiently generate reactive oxygen species (ROS) under daylight irradiation. The photoactive FSCs store the ROS and then release them in the dark. The engineered FSCs exhibit integrated properties of good biocompatibility, strong mechanical characteristics, robust photoactivity with photostorability, and excellent bactericidal efficiency (99.9% contact killing). In a rat model of infected wounds, the photoactive FSCs induce faster healing and reduce bacterial infections. The successful application of these FSC materials as wound dressings may provide a versatile platform for exploring the use of green photoactive antibacterial materials for accelerated wound healing and prevention of infections.
研究领域:
生物材料学
·
医学
·
抗菌技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Shuying Li,Hongbing Jiang,Kun Qiao,Wenjun Gui,Guonian Zhu
Silkworm ( Bombyx mori ) is one of the most important economic insects in the world, while pesticides impact its economic benefits. Tebuconazole is a fungicide that has been frequently detected in agriculture systems at concentrations that affect endocrine function in organisms. In the present study, silkworm larvae at different instar stages were exposed to tebuconazole, respectively. Cocoon weight, cocoon shell weight and cocoon shell rate were significantly decreased by 6.8%, 11.8% and 4.4% respectively, after exposure to 0.40 mg/L tebuconazole at 2nd -3rd instar stage. Vacuolization was found in the exposure silkworm under histopathological study at all stages exposures, indicating potential damage to silk gland. Downregulation of genes transcription ( Fibh , Fibl , P25 , Ser2 , Ser3 ) involved with protein synthesis in the silk gland were further observed, and the results showed significant decreasing in mRNA expression among the tebuconazole treatments. Ecdysteroid levels in silkworm were changed with pronounced decreases after exposed to tebuconazole. In contrast, exposure to tebuconazole significantly increased juvenile hormone 1 concentrations and the maximum increasing fold of juvenile hormone 1 was up to 3.73 which was observed at stage I exposure. In addition, co-exposure to 2 and 10 mg/L forskolin able to mitigate tebuconazole-induced downregulate of mRNA expression of Sgf1 in the present study, indicating the potential mechanism of tebuconazole-induced chronic toxicity in silkworm may relative to PI3K/AKT/TORC1/Sgf1 pathway.
研究领域:
昆虫学
·
毒理学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Liping Duan,Jianzhi Xu,Yifan Xu,Ruiqi Tian,Yingying Sun,Chuannan Zhu,Xiangyin Mo,Xiaosi Zhou
Potassium ion batteries (PIBs) are emerging as potential next-generation energy storage systems on account of their low cost and high theoretical energy density. Nevertheless, they also face challenges of low specific capacity and suboptimal cycling stability. Herein, we synthesize a cocoon-like P3-type K 0.5 Mn 0.7 Ni 0.3 O 2 (KMNO) cathode material by a self-template method. The KMNO cocoons possess a hierarchical layered architecture composed of nanoparticle stacking, which can accelerate the transport kinetics of potassium ions, mitigate the stress caused by K + intercalation and deintercalation, and improve structural stability. In addition, Ni can not only alleviate the Jahn-Teller distortion and suppress the phase transition to stabilize the structure, but also act as an electrochemically active element, providing the capacity of two electrons from Ni 2+ to Ni 4+ . Combining the advantages of structure and nickel substitution, the P3-type KMNO cocoons are used for electrochemical performance testing of PIB cathodes, delivering an excellent rate capability of 57.1 mA h g −1 at 500 mA g −1 and a remarkable cycling stability of 77.0% over 300 cycles at 100 mA g −1 . Impressively, the KMNO cocoons//pitch-derived soft carbon assembled full battery exhibits superior electrochemical performance with a reversible capacity of 79.7 mA h g −1 at 50 mA g −1 . Moreover, ex-situ XRD also further reveals a solid solution phase reaction with a volume change of only 1.46%. This work furnishes a suitable approach to fabricating high-performance layered oxide cathodes for PIBs with outstanding cycling stability and rate capability.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
COMPOSITE STRUCTURES
·
2024
·
IF 6.3
Jiayi Li,Lu Lu,Haibo Liang,Yan Sun,Xuesong Guo,Zhenzhen Wei,Yan Zhao
Considering electrospun nanofiber-based membranes that generally exhibit high porosity but poor mechanical property, there is a growing need to fabricate nanofibrous separators with comprehensive performance for lithium-ion batteries (LIBs). Silkworm cocoon, a source of design inspiration from nature, comprises a multilayer structure with composition change in the thickness direction, thereby endowing the cocoon with relatively high porosity and outstanding mechanical strength. Therefore, a silkworm cocoon-like structured nanofibrous separator (GPS) is fabricated in this work by initially preparing several polyacrylonitrile (PAN) nanofibrous membranes with varied content of carboxyl styrene butadiene latex (SBR) and then laminating them in a concentration gradient sequence. Compared with the pristine PAN membrane, the GPS exhibits comparable porosity, thermal stability and electrolyte wettability due to the existence of PAN nanofibers, while the tensile strength and puncture resistance of the GPS are greatly raised by 5.5 times and 1.5 times, respectively. On account of the structure design, GPS also shows better mechanical strength than PAN/SBR separators without concentration gradient, and the strengthening mechanism has been verified by the finite element analysis. Meanwhile, such gradient structure of GPS renders the battery with desirable ion transport ability and stable cycle properties. Thus, the silkworm cocoon-like structured separator could be a promising separator candidate for LIBs, and the bioinspired design in structure will play an increasingly important role in the development of high-performance battery in the future.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Rui Wang,Yinshi Li
Developing cost-effective and environmental-friend electrode material is critical to accelerate the large-scale commercialization of the all-vanadium redox flow batteries . Herein, we propose and develop a twin-cocoon-derived self-standing carbon material by a green and safe preparation method. This facile degumming and carbonization process allows the twin-cocoon-derived monolithic carbon material to be decorated with nitrogen defects and oxygen functional groups. It has been demonstrated that this nitrogen-oxygen-rich monolithic carbon electrode material yields a promoted electrochemical activity for both V 2+ /V 3+ and VO 2+ /VO 2 + couples, causing a 50% decrease in redox potential difference and a 192% increase in diffusion slope as compared with the commercial carbon paper , thereby improving the electrochemical reversibility and enhancing the mass transfer kinetics. It is also found that the flow battery using nitrogen-oxygen-rich monolithic carbon electrode material shows 83% higher average discharge capacity and 20% higher energy efficiency than that with carbon paper at the current density of 100 mA cm −2 , promising a high-performance and low-cost all-vanadium redox flow battery . This work opens a new way to developing monolithic carbon electrode material that possesses great potential applications in flow battery and other electrochemical energy conversion and storage systems.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 6
·7574-7586
·
IF 2.478
Ni Xinyao,Feng Hao,Li Lihui,Liu Xiaoyun,Wang Tianyi,Cui Zhong-Kai,Gu Jinlou,Zhuang Qixin
Nanocomposites with great thermal stability and excellent dielectric properties play a vital role in the development of high-temperature resistant capacitors. A facile yet effective method to synthesize enhanced dielectric properties of thermostable three-phase poly(p-phenylene benzobisoxazole) (mCCTO@CFGO/PBO) nanocomposite films is demonstrated in this work. The amino-functionalized oxide CaCu 3 Ti 4 O 12 nanoparticles (mCCTO) are enwrapped by the carboxyl-functionalized ultrathin graphene shells (CFGO), forming the silk-cocoon structure to achieve homogeneous dispersion in the matrix. The final films are fabricated via in situ polymerization by introducing the mCCTO@CFGO nanoparticles into the PBO precursor polymer. The mCCTO@CFGO/PBO nanocomposite films exhibit high thermal stability (the 5% thermal decomposition temperature is 655 °C), while the unique silk-cocoon structure effectively confers the high dielectric constant up to 86.9 and ultra-low dielectric loss (0.063) with the loading of 10 wt% mCCTO@3 wt% CFGO/PBO at 1 kHz and 200 °C. This promising strategy accelerates the development of electronic devices used under high temperatures.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER TESTING
·
2023
·
IF 5.1
Lvzhu Cheng,Amjad Farooq,Hai Wei Yang,Peng Wang,Qifan Qiao,Mingming Guo,Yong Wang,Zongqian Wang
Golden cocoon silk fibers suffer a lot from limited yield and serious color losing, which greatly restrict their uses. The development of golden cocoon-like silk fibers can effectively address the above issues. Herein, a low-dosage chemicals, short process alternative approach to reactive dyeing of golden cocoon-like silk fibers with robust color fastness was proposed. Investigation involves the pretreatment of the above silk via one-bath method followed by reactive dyeing. The results indicate that the color of as-prepared golden cocoon-like silk fiber is comparable with the commercial golden cocoon one. The short-process dyeing and robust color fastness with reactive dyes of silk fiber can be realized via the introduction of alkali. Importantly, no obvious color degradation following cyclic washing was observed, with the value of color difference within 2.0. Additionally, the tensile behavior of reactive dyed golden cocoon-like silk fiber was not significantly decreased as compared with the raw fiber.
研究领域:
纺织科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Yuanjing Ding,Junkai Gao,Zhongzhi Chen,Qian He,Mengsheng Xia,Pengtao Xu,Yan Cao,Yan Chen
Based on the durability of fibroin and the biocompatibility of sericin, researchers are exploring ways to maximize their advantages by combining them in the biomedical field . Fortunately, silk cocoon shell (SC) offers a natural composite material of fibroin and sericin. However, the inherent hydrophobicity of SC, the random arrangement connection of fibers, and the protection provided by the outer sericin limit its application in purifying oil wastewater. In this work, a cost-effective method was developed to improve the hydrophilicity of SC and the mechanical properties of SC by utilizing obsoleted SC as a matrix as well as by dissolving portions of sericin proteins. The polydopamine particle (PDP) was utilized as the intermediate modification layer and a supramolecular gel (SMG) was introduced to the surface of SC, further improving the surface's hydrophilicity of SC. The study indicated that SC@P-SMG has excellent mechanical properties, favorable anti-fouling properties, and superior self-cleaning ability. Furthermore, when the SC@P-SMG was applied in water purification , it could achieve multifunctional applications such as purifying wastewater containing emulsified oil and Pb 2+ ions, methylene blue (MB), and oil-water mixture separation. This work provided innovative ideas to maximize the benefits of combining fibroin and sericin.
研究领域:
材料科学
·
环境科学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）