ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Mengdi Xu,Hermela Ejegu Feysa,Xiaoqing Ni,Guangbiao Xu,Qingshuai Yan,Hua Shen,Yueqi Zhong,Xingjie Wang
Optimized management of wound exudate is pivotal in modulating the wound healing microenvironment and facilitating tissue regeneration. Conventional dressings, however, are constrained by limited absorption capacity and a slow drainage rate, frequently resulting in excessive exudate accumulation that hinders the healing process. In this study, we developed hydrophilic kapok fiber gauze (H-KG) and Janus kapok fiber gauze (J-KG) through a sustainable and scalable hydroentanglement forming process combined with chemical modification, leveraging the unique hollow tubular structure of kapok fibers. H-KG and J-KG achieved rapid absorption, high capacity storage, and efficient evaporation through synergistic wettability modulation and capillary action-enhanced liquid transport within the hollow structure. The kapok fiber-based gauze demonstrated remarkable sustainable liquid self-pumping capabilities, exhibiting a saturation absorption rate of approximately 1346% with complete liquid evaporation achieved within 1 h. In vivo experiments revealed that both H-KG and J-KG significantly mitigated wound exudate accumulation compared with cotton gauze (CG), thereby accelerating wound healing. Quantitative analysis showed that on day 12 post-treatment, the H-KG and J-KG exhibited residual wound areas measuring 48.23% and 34.41%, respectively, of CG. This work elucidated the mechanistic role of hollow fiber in exudate management while proposing an innovative wound dressing with dynamic fluid regulation capabilities.
研究领域:
生物材料
·
生物医学工程
·
组织工程
·
伤口愈合
·
流体传输材料
·
纤维科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 21
·4501
·
IF 4.967
Yanfang Zhao,Aichun Long,Pengfei Zhao,Lusheng Liao,Rui Wang,Gaorong Li,Bingbing Wang,Xiaoxue Liao,Rentong Yu,Jianhe Liao
Constructing hierarchical structures is indispensable to tuning the electromagnetic properties of carbon-based materials. Here, carbon microtubes with nanometer wall thickness and micrometer diameter were fabricated by a feasible approach with economical and sustainable kapok fiber. The carbonized kapok fiber (CKF) exhibits microscale pores from the inherent porous templates as well as pyrolysis-induced nanopores inside the wall, affording the hierarchical carbon microtube with excellent microwave absorbing performance over broad frequency. Particularly, CKF-650 exhibits an optimized reflection loss (RL) of −62.46 dB (10.32 GHz, 2.2 mm), while CKF-600 demonstrates an effective absorption bandwidth (RL < −10 dB) of 6.80 GHz (11.20–18.00 GHz, 2.8 mm). Moreover, more than 90% of the incident electromagnetic wave ranging from 2.88 GHz to 18.00 GHz can be dissipated by simply controlling the carbonization temperature of KF and/or the thickness of the carbon-microtube-based absorber. These encouraging findings provide a facile alternative route to fabricate microwave absorbers with broadband attenuation capacity by utilizing sustainable biomass.Keywords:biomass-derived carbon microtube;kapok fiber;electromagnetic loss;microwave attenuation
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 4
·2279-2288
·
IF 6.123
Duan Xia,Zhang Shouwei,Liu Qingtao,Yu Zhicai,Cui Yongming,Tang Bin,Zhang Qian,Wang Jinfeng
The nanostructure of materials plays a key role in interfacial solar vapor generation. Traditional approaches for optimizing interfacial evaporation rely on the external devices to enable floating on water. However, how to unlock the self-floating ability of absorbers for solar interfacial evaporation have not been taken into account. Here, we propose a self-floating absorber based on kapok fibers, which possess large hollow structure and hydrophobicity to enable this absorber float on water without assistance. Gold nanoparticles (AuNPs) were loaded on kapok fibres by in-situ synthesis and showed an extended adsorption (74.7%) wavelength ranging from 280 to 2500 nm. Both the hollow structure of kapok fibres and the thermal localization effect of AuNPs sustaintially enhance the solar interfere vapor generation effect (4 kW m −2 , up to 89%). Also, Each cycle test was carried out under 1 h irradiation. The AuNPs/kapok membrane exhibited stable cycling performance, which maintained an evaporation rate of 6.98 kg m −2 h −1 over 10 times without performance decrease. These results provide new insights for design of advanced photothermal conversion materials with biomass as supporting material, We expect this as-prepared membrane can be used for a range of applications, such as solar interference steam generation, desalination and disinfection, to name a few.
研究领域:
材料科学
·
能源技术
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Jiaming Sun,E. Lei,Chunhui Ma,Zhenwei Wu,Zhou Xu,Yushan Liu,Wei Li,Shouxin Liu
We prepared carbon aerogel/RuO 2 composites with three-dimensional microtubes based on renewable natural kapok fibers by combining a NaClO 2 pretreatment, CO 2 activation and loading of RuO 2 nanoparticles . The electrochemical performance of the material was optimized by tuning the carbonization temperature. The composite calcined at 800 °C for 2 h and activated by CO 2 for 30 min possessed an integrated tubular structure and moderate pore size distribution . This composite material also showed highest specific capacitance of 433 F g −1 at a current density of 1 A g −1 with a capacitance retention of 91.5% for 2000 cycles in 3 M KOH solution in three-electrode system. The maximum energy density was 8.92 Wh kg −1 at 558.12 W kg −1 at a cell voltage of 1 V in 3.0 M KOH aqueous electrolyte in a symmetric device. We attribute the reversible capacity of the obtained bio-derived carbon aerogel/RuO 2 composites to the high-speed flow of the electrolyte in the unique hollow tubular structure, the appropriate pore size distribution and the synergetic effect of the high capacitance of RuO 2 and good stability of the carbon material.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
·
功能材料
·
可持续材料
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Xingyu Sun,Zhuoying Wu,Siying Li,Kun Wang,Dan Qian,Yuhui Weng,Chuhan Zhou,Chengdu Liang,Min Ling
The high localized stress generated during (de)lithiation in silicon (Si)-based anodes causes electrode fracture and capacity degradation. Drawing inspiration from the theory of fiber-reinforced materials, we introduce carbonized kapok fiber (CKF) as a conductive additive for Si-based anodes, which effectively dissipates the internal stress induced by volumetric expansion within the electrode. Furthermore, the CKF additive offers long-range conductive pathways, enhancing the contact area compared to the point-to-point connections of the commercial conductive additive Super P, thereby facilitating the formation of efficient conductive networks within the electrode. Additionally, the unique hollow structure of CKF enhanced Li + transport within the electrode. The incorporation of 3 wt% CKF significantly improves the cycling stability of Si-based anodes, with SiOx anodes exhibiting an impressive capacity retention of 95.9 % after 300 cycles and SiC anodes retaining 90.0 % after 150 cycles at 0.5C. CKF is an excellent conductive additive for Si-based anodes in lithium-ion batteries with a very high potential for application.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Fei Chai,Runkai Wang,Pinhua Rao,Wenqi Zhang,Lili Yan,Niannian Yang,Yiyun Cai,Chunyan Xi
Aiming to increase the industrial application potential of kapok fibers (KF) derived from Ceiba pentandra to deal with the anionic dyes from water, a novel biosorbent with abundant ammonium groups was synthesized via layer-by-layer self-assembly of the surface polymerization of dopa-mine (DOPA) with cross-linked polyethyleneimine (PEI) and glutaraldehyde (GA). During the self- assembly process of the biosorbent (KF-DOPA-PEI/GA), the response surface methodology based on three-level three-factorial Box–Behnken design was applied to establish the optimum modification conditions. The morphological and surface characterization was carried out with scanning electron microscope, Fourier transform infrared spectroscopy and contact angle measurement demonstrating the successful assembly on the surface of kapok fibers. The batch tests investigated a high adsorption efficiency towards methyl orange (MO) with the maximum adsorption capacity of 85.02 mg/g and the biosorbent showed excellent reusability after five cycles with the hydrochloric acid solution, indicating a potential adsorbent for anionic dyes containing wastewater treatment.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
·
水处理
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Huiqi Gao,Haiyun Ma,Jinjin Cui,Chang Wang,Hong Zhang,Yunhong Jiao,Jianzhong Xu
As a promising candidate to mitigate the intermittence of solar energy, multifunctional phase change materials (PCMs) with flame retardancy and fire warning are urgently desirable. Herein, we design a cellulose-based multifunctional aerogel PCMs with leak-proof, thermal energy storage, thermoelectric conversion, flame retardancy, and fire warning. As a natural plant fiber, the hollow structure of Kapok fiber (KF) endows the composite PCMs a high loading ratio and thermal energy storage density. Additionally, the polyhydroxyl KF can rapidly carbonize via synergistic catalysis of phytic acid and MXene, enhancing flame retardancy and achieving rapid fire alarm. Specifically, KSM@PEG-PA PCMs exhibit 98 % encapsulation efficiency and a high heat storage density of 173.1 J/g, as well as exceptional solar-thermal conversion efficiency (97.1 %). KSM@PEG-PA10 further converts the harvested thermal energy into electrical energy, generating 587 mV of voltage, 78.7 mA of current at 500 mw/cm 2 . The peak heat release rate (pHRR) and total heat release (THR) of KSM@PEG-PA is significantly decreased by 52.6 % and 32.8 %, respectively. Furthermore, the KSM@PEG-PA10 achieves an ultra-fast fire alarm response time of 2.0 s. This work offers valuable insights on the design of composite PCMs, expanding the application prospects in solar energy and fire safety.
研究领域:
材料科学
·
储能
·
消防安全工程
·
可再生能源
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Chuan Shi,Ke Wang,Haohao Cui,Enhui Ma,Hong Wang
Microplastic contamination has increasingly become a focus of public attention due to its ubiquity on earth. As the appearance of microplastics in the human body has raised great concerns about their effects on human health, it is imperative to develop efficient technologies to remove microplastics. In this work, taking advantage of the hollow structure of kapok fibers and low-cost MnO 2 catalyst, a tubular self-driven micromotor was synthesized for simultaneous adsorption and degradation of microplastics. Functionalization with polydopamine endowed the micromotors with the ability of on-the-fly capture of microplastics. Attributed to the enhanced diffusion caused by the self-propulsion, the propelled micromotors exhibited an adsorption efficiency 3.41 times that of static micromotors, achieving a removal ratio of 73.57 % in 1 mg/mL polystyrene microspheres dispersion in 30 min without external stirring, which poses a prospective approach for in-situ removal of microplastics. In addition, coupling with photocatalytic CdS, the formed CdS/PDA heterojunction could generate photo-induced charge carriers, which together with the active species produced through the Fenton-like processes contributed to the degradation of microplastics. This work proposed a new platform for the simultaneous adsorption and degradation of microplastics and may provide implications for the removal of microplastics in the environment.
研究领域:
环境科学
·
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2023
·Vol. 30
·期 11
·7031-7045
·
IF 5.7
He Hualing,Wang Yushu,Liu Jinru,Zhao Yuhang,Jiang Qing,Zhang Xin,Wang Jinfeng,Wang Hua,Yu Zhicai
Construction of biomass-based wearable aerogel heater with enhanced thermal insulation property plays a significant role in preventing heat loss for personal thermal management. Inspired by natural creatures’ utilization own hollow microstructures to resist the extremely cold surroundings, we report an eco-friendly strategy to construct calcium alginate (CA) /kapok fiber (KF)/carbon nanotubes (CNTs) active-cum-passive aerogel heater with desired economic feasibility, sustainability and efficient thermal insulation performance. The renewable cellulose hollow KF disrupts the heat transfer pathway and enabled CA/KF/CNT lower thermal conductivity (0.024 W/m·K) and ultralight density (0.027 g/cm 3 ). The CNTs in the aerogel heater not only provided excellent conductivity for realizing Joule-heating but also enhanced the photothermal conversion capability from solar irradiation, ensuring extra self-heating ability without power supply. According to energy-saving analysis, the total energy saved in China per year was 6.03 × 10 9 kWh when using the developed aerogel heater instead of the traditional heating method. This developed biomass aerogel heater in this work exhibits great potential to be applicable in the fields of wearable personal thermal management to enhance the adaptability of human body in cold environment. Our work may inspire the study of biomass-derived wearable heaters for solving global energy issues. Graphical abstract
研究领域:
材料科学
·
纳米技术
·
可持续能源
·
热工程
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaoyan He,Yanling Liang,Jing Li,Yuanyuan Lu,Xin Tian,Zhiqiang Wang,Runze Cao,Penggai Ma,Shuo Ma,Xiaoquan Lu
Solar interfacial evaporation technology, as an emerging sustainable water purification strategy, provides both an economical and environmentally friendly way to solve water resource problems. However, it still faces certain limitations and challenges in treating polluted wastewater containing volatile organic compounds (VOCs). In this paper, MXene-TiO 2 -Ag composites were embedded into a polyvinyl alcohol (PVA) hydrogel system using kapok fibres as biomass templates, and a bifunctional and environmentally friendly solar evaporation system (MTAH) was successfully constructed for both efficient solar freshwater production and phenol removal (typical VOC). The MTAH evaporator demonstrated excellent evaporation performance with an evaporation rate as high as 3.09 kg m −2 h −1 and a photothermal conversion efficiency as high as 93.16 % under 1 solar light intensity. The self-growth property of TiO 2 on the MXene surface endowed the evaporator with the ability of photocatalytic degradation of pollutants. In addition, the incorporation of trace Ag nanoparticles played positive roles, which not only significantly enhanced the photothermal conversion performance of MXene, but also broadened the light response range of TiO 2 and effectively suppressed the complexation of photogenerated electron-hole pairs. The MTAH evaporator shows an excellent removal rate of 91.84 % for high VOC concentrations (100 ppm phenol), effectively avoiding secondary contamination of the condensate. The finding paved the course for the sustainable and eco-friendly solution for freshwater scarcity.
研究领域:
材料科学
·
环境工程
·
太阳能利用
·
光催化
·
水净化
✓ 已验证
产品关联
DOI
高影响因子
FOOD SCIENCE AND BIOTECHNOLOGY
·
2023
·
IF 2.9
Wu Jiao,Zhao Shan,Chen Xin,Jiu Yuanda,Liu Junfeng,Gao Jinglin,Wang Shijie
Honey quality is in relation to botanical origin, and physicochemical properties, elemental composition, and antioxidant activity have been used for assessment and identification of honeys. The goal of this study is to contribute to the general analysis of five unifloral honeys from Cocos nucifera L., Dalbergia benthami Prain, Bombax ceiba L., Castanea mollissima Bl., and mangrove in Hainan province, China. Our results revealed that B. ceiba honey had the highest pH (4.27), color (139.33 mm Pfund), ash content (1.03 g/100 g), and electrical conductivity (1312.00 μS/cm) in five unifloral honeys. Furthermore, B. ceiba honey also contained the highest levels of total phenolic content (75.54 mg GAE/100 g) and total flavonoid content (29.22 mg RE/100 g), as well as the strongest antioxidant activity (DPPH IC 50 value, 3.97 mg/mL; FRAP value, 6527.43 µmol TE/kg). Moreover, we revealed a considerable variation in element contents in honeys using ICP-MS, with potassium being the most predominant element. B. ceiba honey had the highest contents of K, Ca, Mg, and P, whereas the highest amount of Na was found in mangrove honey. Overall, our data indicated that B. ceiba honey deserves further research as a potential antioxidant agent.
研究领域:
农业
·
食品科学
·
分析化学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SN Applied Sciences
·
2020
·Vol. 2
·期 12
·1-12
·
IF 0
Wang Yijing,Jin Ling,Xue Tao,Shao Feifei,Yao Yuan,Li Xinxin
The application of pH-responsive superwetting materials receives increasing attention in oil/water separation. In this work, a mussel inspired robust surface coating fabricated with dopamine, copolymer PDMAEMA- co -PHEMA- co -PHFBMA (PDHH) and SiO 2 nanoparticles (DPS) was formed on stainless steel mesh to perform multiple repeatable oil/water separation. Herein, dopamine was chosen to provide strong adhesion strength and durability, endowing the mesh excellent stability in harsh environments, such as mechanical abrasion, acid/alkali immersion and UV irradiation. In virtue of pH stimulation, the as-prepared mesh can be reversibly switched between superhydrophobicity and superhydrophilicity. Moreover, the mesh possesses remarkable oil/water separation efficiency (SE) (≥98%) and desirable recyclability. An oil collector prepared by the mesh and kapok fiber showed good oil absorption capability in the range of 39.67–79.56 g/g. The facile and inexpensive preparation of the durable separation device enables it promising in actual oil/water separation. Graphic abstract
研究领域:
材料科学
·
环境工程
·
化学
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）