Additive Manufacturing
·
2024
·
IF 10.3
Xiaojie Shi,Chuhang Liu,Bo Lin,Guoqiang Zhou,Chaozheng Liu,Changtong Mei,Mei-Chun Li
The high degree of modularity and miniaturization of nanoelectronic devices results in a significant increase in heat flux per unit area of electronic components. This can cause a rise in temperature, especially when used outdoors under direct sunlight conditions, which can negatively impact their operational stability and service life. Traditional radiators have limited effectiveness in outdoor sunlight conditions. Additionally, conventional heat sinks are often too large and heavy for miniature electronic devices. Therefore, finding an effective solution to cool electronics under sunlight conditions remains a challenge. Herein, we present an innovative solution to fabricate 3D-printed coolers for electronic devices based on the methyltrimethoxysilane/silica/cellulose nanofibers (MSC) ink. 3D printing technology enables the fabrication of radiative coolers with complex structures and efficient cooling performance as needed. The combination of CNFs and SiO₂ nanoparticles, coupled with the porous nature of the structure, enables the 3D-printed MSC scaffold to exhibit excellent solar reflectance and high mid-infrared (MIR) emissivity, thereby facilitating superior radiative cooling capabilities. During the daytime, it can efficiently reduce the temperature of electronic devices by 6.16 °C, thereby improving their operational efficiency and service life. Furthermore, the 3D-printed MSC scaffold exhibits superior mechanical properties due to the robust 3D frame structure formed by the ink components, which provides stability for the electronic device during operation. This study presents an innovative approach to developing electronic device coolers with excellent cooling performance, which is significant in promoting the reliability and stability of electronic devices.
研究领域:
材料科学
·
纳米技术
·
电子工程
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2017
·
IF 2.714
Juan Guo,Wenbo Du,Yong Gao,Yuan Cao,Yafang Yin
A novel water-in-soybean oil Pickering emulsifier based on CNCs was fabricated via the intercalative chemical reaction between n -octadecyl isocyanates and hydroxyl groups in CNCs. The structural variations of alkyl intercalated CNCs with different degrees of substitution for hydroxyl groups were studied by TEM, AFM, FTIR, XRD , elemental analysis and liquid DSC . It is shown that O(2)H/O(6)H instead of O(3)H in CNCs were substituted after intercalative modification. And the particle thickness was increased after the intercalation, due to the enlargement of the basal spacing of (200) lattice plane in CNCs. While their cross section dimensions were unvaried. The structural variations in alkyl intercalated CNCs on their emulsifying capacity were further studied. Particle length has the insignificant influence on the emulsifying capacity. Alkyl intercalated CNCs with different particle lengths failed to stabilize water-in-soybean oil Pickering emulsion droplets, if O(2)H/O(6)H hydroxyl groups were fully substituted with alkyls. Alkyl intercalated CNCs with appropriate amounts of substituted hydroxyl groups possessed a good emulsifying capacity. After the initial coalescence, the average droplet size and its distribution polydispersity remained nearly constant with one year of storage. Results shown that alkyl intercalated CNCs with different degrees of substitution for hydroxyl groups had the similar interfacial tension at the soybean oil-water interface, the similar molecular arrangement of internal intercalated alkyls but different contact angles. These indicated that emulsifying capacity was mainly related to their surface alkyl chains. Besides, water-in-soybean oil Pickering emulsions stabilized by alkyl intercalated CNCs were from steric hindrance rather than interfacial tension reduction mechanism.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
Small
·
2022
·Vol. 19
·期 9
·2205853
·
IF 15.153
Junwen Xie,Yinhang Zhang,Jinming Dai,Zuoxiang Xie,Jie Xue,Kun Dai,Fei Zhang,Dan Liu,Junye Cheng,Feiyu Kang,Baohua Li,Yun Zhao,Lin Lin,Qingbin Zheng
A booming demand for wearable electronic devices urges the development of multifunctional smart fabrics. However, it is still facing a challenge to fabricate multifunctional smart fabrics with satisfactory mechanical property, excellent Joule heating performance, highly efficient photothermal conversion, outstanding electromagnetic shielding effectiveness, and superior anti-bacterial capability. Here, a MoSe 2 @MXene heterostructure-based multifunctional cellulose fabric is fabricated by depositing MXene nanosheets onto cellulose fabric followed by a facile hydrothermal method to grow MoSe 2 nanoflakes on MXene layers. A low-voltage Joule heating therapy platform with rapid Joule heating response (up to 230 °C in 25 s at a supplied voltage of 4 V) and stable performance under repeated bending cycles (up to 1000 cycles) is realized. Besides, the multifunctional fabric also exhibits excellent photothermal performance (up to 130 °C upon irradiation for 25 s with a light intensity of 400 mW cm −2 ), outstanding electromagnetic interference shielding effectiveness (37 dB), and excellent antibacterial performances (>90% anti-bacterial rate toward Escherichia coli , Bacillus subtilis , and Staphylococcus aureus ). This work offers an efficient avenue to fabricate multifunctional wearable thermal therapy devices for mobile healthcare and personal thermal management.
研究领域:
材料科学
·
纳米技术
·
可穿戴技术
·
热管理
·
电磁干扰屏蔽
·
抗菌技术
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DOI
高影响因子
Materials Research Express
·
2020
·Vol. 6
·期 12
·1250e4
·
IF 1.929
Jiajun Wu,Zhenzhen Quan,Hongnan Zhang,Xiaohong Qin,Rongwu Wang,Jianyong Yu
Needleless electrospinning has been a simple preparation technique for nanofiber output upscaling. However, cellulose acetate (CA) has never been tried before for its high volatility in solvent acetone. By comparing the different solvent system of acetone/dimethyl sulfoxide (DMSO), acetone/dimethylacetamide (DMAc) and acetic acid/water, the electrospun CA nanofiber was successfully prepared via metal plate needleless spinneret. The results showed that electrospun CA nanofiber could be steadily and continuously obtained in acetone/DMSO = 2/1 v/v solvent system with output around 10–20 ml h−1. The solution viscosity, conductivity and surface tension were measured with different amount of amphiphilic surfactant added. With higher amount of surfactant, the solution viscosity slightly decreased, and the conductivity increased steadily. The surface tension decreased to a stable constant with increasing surfactant amount. The correlation between the three independent variables and the average diameter and their CV value of electrospun CA nanofibers was investigated by SPSS Pearson partial correlation analysis. Solution viscosity was highly correlated with mean diameter. The linear regression analysis of the solution viscosity and the mean diameter of CA nanofibers was conducted. The predicted value of mean diameter of nanofibers had a high fitting goodness with the real value. Finally, the differences between electrospun CA nanofiber via single needle and needleless metal plate spinneret were also compared.
研究领域:
材料科学
·
纳米技术
·
化学工程
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DOI
高影响因子
FLAVOUR AND FRAGRANCE JOURNAL
·
2021
·Vol. 36
·期 4
·457-464
·
IF 2.576
Yu Kang Zhang,Ling Gao,Jie Ling Chen,Ying Hong,Wei-Jian Shen,Ying Wang,Jian Hua Zhu
A new way of controllable releasing menthol with amorphous silica is reported for the first time. Porous silica adsorbed menthol in 373-413 K and then was covered with cellulose acetate film to form a carrier-embedded menthol. The sealed menthol would be released at elevated temperatures once the cover fractured. Here, the influence of temperature and nature of sorbent on the adsorption of menthol along with the covering manner were investigated carefully, and the thermal release of menthol was studied with headspace gas chromatography (HS-GC) method. Silica adsorbed about 400 mg g −1 of menthol at the optimal adsorption conditions and released most of them at about 473 K. Preliminary application in non-combustible cigarette proven the feasibility of thermal release of menthol with the covered silica carrier.
研究领域:
材料科学
·
化学工程
·
分析化学
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DOI
高影响因子
Advanced Materials Interfaces
·
2021
·Vol. 8
·期 11
·2100186
·
IF 6.147
Jia-jing Huang,Ting Wang,Yu-miao Su,Yu-lin Ding,Chao-yang Tu,Wen-mu Li
Exploring a method to fabricate robust and stable 3D conductive networks in polymers matrix is still the challenge in the research and development of electromagnetic interference (EMI) shielding materials. Here, a feasible approach is provided to produce high-performance, silicone-doped MXene EMI shielding composites. The trace amount of hydroxyethyl cellulose is deliberately applied as gels to construct the MXene aerogels with a stable and highly conductive network by the freeze-drying method. For more desirable mechanical and waterproof properties, the silicone resin is introduced into the MXene aerogels on purpose. The best silicone-doped MXene EMI shielding composites display a superior electrical conductivity of 3166.4 S m −1 , and EMI shield effectiveness of 74.5 dB at the X-band (8.2–12.4 GHz). It is worth noting that the introduction of silicone resins sharply improves the hydrophobicity of EMI shielding materials to a range of water contact angle of about 151.5°–155.0°. This is a promising method to make MXene-based EMI shielding composites with self-cleaning function.
研究领域:
材料科学
·
电磁工程
·
复合材料
·
纳米技术
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Ming Guo,Jue Wang,Cheng Zhang,Xinyu Zhang,Changlei Xia,Hongfei Lin,Chin Yik Lin,Su Shiung Lam
Pollution of phenolic effluent from spice and plastics factories has become increasingly serious. Thus, developing a green and highly efficient adsorbent to remove phenolic compounds from wastewater is of urgent need. In this study, cellulose graft copolymer was synthesized through grafting 4-vinylpyridine monomer and polyethylene glycol methacrylate to a molecular skeleton of cellulose by free radical polymerization. The supramolecular hydrogel was successfully synthesized by physical cross-linking of cellulose graft copolymer and α-cyclodextrin. These supramolecular hydrogels were thoroughly characterized and the adsorption performance (adsorption isotherms and adsorption kinetics) of phenol on the supramolecular hydrogel were investigated in batch operation. The supramolecular hydrogel not only exhibited excellent adsorption of phenol , but also demonstrated increased mechanical strength due to the introduction of a modified cellulose base material. The adsorption kinetics of phenol on the supramolecular hydrogel followed a quasi-second-order reaction, with a correlation coefficient of 0.9909. The adsorption isotherm conformed to the Langmuir adsorption isotherm, and the maximum adsorption capacity of phenol can reach 80.71 mg g −1 , which was 2–3 times higher than traditional carbon-based materials. The results demonstrate the great promise of the waste-derived supramolecular hydrogel to be used as an efficient adsorbent in wastewater treatment .
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
Journal of Bioresources and Bioproducts
·
2026
·
IF 13
Aoxue Lang,Zhiying Liang,Wu Yang,Ziyu Guo,Kasim Ocakoglu,Emmanuel Iwuoha,Ruidong Xia,Xinwen Peng
Aqueous zinc-ion batteries (AZIBs) have emerged as promising energy storage systems owing to their high safety, low cost, and environmental friendliness. However, their practical application faces critical challenges, including the formation of Zn dendrites and the occurrence of parasitic side reactions. These phenomena not only hinder ion transport kinetics but also cause rapid capacity decay and potential battery failure. To address these limitations, we developed a sustainable double-crosslinked cellulose hydrogel electrolyte by integrating micron-sized cellulose and cellulose nanofibers (CNFs). The hydrogel electrolyte, constructed from cellulose components with distinct size scales, exhibits a well-organized hierarchical porous network structure, which significantly facilitates the migration of zinc ions. Specifically, nanocellulose serves as a reinforcing filler that enhances the mechanical strength of the dual-network electrolyte, thereby inhibiting Zn dendrite growth. Additionally, abundant carboxyl polar functional groups were also introduced as high-affinity Zn 2+ binding sites to mitigate side reactions. Consequently, the assembled Zn//Zn symmetric cells with this electrolyte demonstrate superior cycling stability exceeding 1 100 h at current density of 0.5 mA/cm 2 , along with a high-capacity retention of 79.9% after 1 000 cycles in the Zn//V 2 O 5 battery. Furthermore, this cellulose hydrogel electrolyte is easily accessible and biodegradable, paving the way for the scalable production of high-performance and environmentally friendly energy storage devices.
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产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2026
·
IF 8
Aofei Guo,Youqian Geng,Haowei Ma,Danying Gao,Hu Feng,Yunrui Zhang,Fangping Hao,Zhenyun Yu,Zhihui Sun
The low water-to-cement ratio cement-based materials represented by high-performance or ultra-high-performance concrete exhibit excellent mechanical and durability properties but suffer from poor flowability and insufficient and nonuniform hydration. Polyethylene glycol-grafted cellulose nanocrystal (PCNC) was synthesized by grafting polyethylene glycol (PEG) onto cellulose nanocrystal (CNC) and then was incorporated into cement paste to improve its flowability and hydration performance. A series of tests were conducted to analyze the flowability, compressive strength, and hydration behavior of cement paste with PCNC, with the hydration mechanism revealed. The results show that PCNC promotes more complete and uniform cement hydration through mechanisms including short-circuit diffusion, nucleation, and steric hindrance, resulting in improved flowability and compressive strength compared to pure and CNC-modified cement paste. The optimal PCNC dosage is 0.1 %, where the flowability and 28-day compressive strength increased by 10.73 % and 30.63 %, respectively. Finally, a mechanism model by which PCNC improves cement hydration was proposed.
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产品关联
DOI
高影响因子
Energy Sources Part A-Recovery Utilization and Environmental Effects
·
2016
·
IF 0.455
Baoxia Li,Wenjuan Wei
In order to investigate the role of the lignin in the co-pyrolysis process of the sludge and the cellulose, the co-pyrolysis process was carried out in a thermogravimetry analyzer. The result shows that when the proportion of the sludge:cellulose:lignin was 1:1:0.4, the main co-pyrolysis temperature range was narrower, the ultimate pyrolysis weight loss was more, and the synergistic effect had a longer duration time. When the pyrolysis temperature was below 400°C, the addition of the lignin could promote the co-pyrolysis process of the cellulose and the sludge, such as the decrease of the activation energy E.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 29
·39879-39894
·
IF 7.8
Xu Tianqi,Yuan Hao,Liu Wenjing,Wang Fei,Huang Chaohao,Wang Teng,Cai Ying,Zhang Jiawen,Yi Lingmin
Frequent
high-temperature weather imposes high demands on the performance
of passive daytime radiative cooling (PDRC) materials. Natural cellulose
is a sustainable raw material with promising PDRC performance based
on its unique macromolecular structure and hierarchical aggregation
structure. However, it is still a great challenge to improve the PDRC
performance of regenerated cellulose materials. In this work, it is
found that the high crystal structure of the regenerated cellulose
film can enhance its photoluminescence (PL) capacity. This intrinsic
PL behavior will enhance its PDRC performance through the photon conversion
mechanism. By converting the absorbed ultraviolet band photons into
visible light for emission effectively, the regenerated cellulose
film presents a higher reflectivity in the visible light band and
a higher cooling power. The regenerated cellulose film with a crystallinity
of 73.71% can achieve an average reflectivity of 93.48% in the 0.3–2.5
μm waveband, which is 4.79% higher than that of the regenerated
cellulose film without PL enhancement, thereby increasing the cooling
power by 115.9%. This kind of highly crystalline cellulose film with
high PDRC performance is expected to make contributions to energy
conservation in cities under diverse climatic conditions.
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DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2026
·
IF 9.9
Shuai Liu,Wenwen Li,Congcong Lou,Xinyi Wang,Shuai Liu,Ken Cham-Fai Leung,Xinglong Gong,Tianzhi Luo,Shouhu Xuan
A Janus-aerogel composite is developed, integrating high thermal conductivity and magnetic-driven positioning. • Liquid metal-constructed continuous networks greatly reduce intrinsic thermal resistance for efficient heat dissipation. • The composite displays efficient heat dissipation and stability in LEDs, CPUs, and electricity transformer boxes. With the miniaturization of electronic devices, interfacial thermal management encounters substantial challenges. However, conventional thermal dissipation materials incorporated with rigid thermal fillers fail to construct tight, durable, and tunable thermal conduction pathways, thereby limiting their application in electronic device heat dissipation. This work reports a magnetically actuated thermal-conductive NdFeB/cellulose nanofiber (CNF)/polyvinyl alcohol (PVA)/liquid metal (LM) (MCPL) aerogel film with a Janus inner structure, in which the flexible LM-CNF/PVA constructs an efficient thermal conduction network, LM-enriched bottom surface provides higher in-plane conductivity, and the NdFeB particles-stratified layer endows the excellent magnetic actuation. The LM forms continuous thermal conduction pathways within the aerogel network, thus significantly reduces the intrinsic thermal resistance (3.16 cm 2 K W −1 ) and achieves good in-plane thermal conductivity (1.632 W m −1 K −1 ). Unlike conventional thermal interface materials, the MCPL enables precise positioning and dynamic adhesion under magnetic regulation, which effectively realizes tunable interfacial thermal conductivity and enhances interfacial affinity. When deployed in LEDs, CPUs, and electrical transformer boxes, the MCPL exhibit controllable thermal conduction behavior, superior heat dissipation capacity and long-term operational stability. This material offers an innovative strategy for intelligent thermal management of electronic devices and facilities. Download: Download high-res image (386KB) Download: Download full-size image
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产品关联
DOI
高影响因子
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