CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Wentao Hao,Jian Xu,Ran Li,Xiangzheng Zhao,Longzhen Qiu,Wen Yang
Oil spillages and industrial discharge of oily water have caused severe damage to global environment. Currently a great many of oil-absorbing materials including graphene aerogels, superhydrophobic cellulose aerogels and polymer foams have been developed to effectively separate oil and water. However, most of the absorbing materials show limitations in separation of high-viscosity oils because the diffusion speed of high-viscosity oils into the porous materials is very slow at room temperature. In this article, a novel oil/water separation material was fabricated from rock wool superhydrophobically modified by PDMS/SiO 2 nanoparticle treatment. The modified rock wool could circularly absorb spilled oil and reload after combustion or squeezing. Most importantly, the modified rock wool worked well in continuously collecting high-viscosity oil with the aid of electric heating due to its excellent heat resistance. Because the rock wools have been industrially produced in large scale with very low prices and they are degradable naturally, this kind of spilled oil treatment was demonstrated to be a low-cost and environment-friendly method for the high-viscosity oil separation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Wenhua Cheng,Yan Zhang,Wenxiang Tian,Jiajia Liu,Jingyi Lu,Bibo Wang,Weiyi Xing,Yuan Hu
In this work, a highly efficient flame retardant and electromagnetic interference (EMI) shielding coating on cotton fabric was fabricated by a simple solution impregnation and dip-coating method, which involved three layers of polyacetimidate (PEI), ammonium polyphosphate (APP), and Ti3C2Tx. When exposed directly to flame, the PEI/APP coating lead to a char layer resulting in self-extinguishing performance. Particularly, the cotton fabric coated by increasing amounts of Ti3C2Tx gradually achieved EMI shielding performance. When the Ti3C2Tx sheets content was 5.2 mg/cm2, a high electrical conductivity of 670.3 S·m–1 and a EMI shielding effectiveness of 31.04 dB were achieved in the X-band with an absorption-dominated mechanism. Besides, such modified cotton fabric also has the potential to be used as an electrical heating material. The temperature could even reach up to about 64.3 °C under an applied voltage of just 4 V. Therefore, this work provided a feasible idea for preparing multifunctional fabrics.
研究领域:
材料科学
·
纺织工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2023
·
IF 9.1
YueChao Zhao,Fei Fang
To reduce energy consumption, personal thermal management device has attracted great attention. Developing flexible fibers with low thermal conductivity or low emissivity is crucial but is still a great challenge. In this work, we developed a flexible and versatile composite textile with excellent passive and active heating capabilities. Via designing of the pore morphology and solid phase network, the aerogel textile of TPU/SiO 2 (named as T-textile) is obtained with a low thermal conductivity of 0.037 W/mK. The T-textile also exhibits high flexibility with a fracture strain of 580%, while the low ductility is usually an issue for aerogel textures. Meantime, the conductive textile of TPU/Ag (S-textile) is fabricated with a low infrared emissivity of 0.40 and a high electric conductivity of 248.99 S/mm. The S-textile also possesses excellent electromagnetic shielding capability (above 75 dB). The simulated skin (∼27.4 °C) covered with layers of ST (S + T) and STT (S + T + T) textiles could be warmed to 32.6 °C and 35 °C, respectively. Also, with only 0.6 V, the simulated skin covered with S-textile could be heated to 50 °C, while with the TS textile (the ST textile flipped), it is 58 °C. The composite textile offers a combined solution for thermal insulation , Joule heating, flexibility, breathability and electromagnetic shielding capability, making it a smart personal thermal management device for complex scenarios.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Energy Technology
·
2024
·
IF 3.6
Dongyin Niu,Tiantian Zhang,Xuedan Zhang,Yufei Tan,Lukai Zhai
Under the background of vigorously promoting clean heating, the introduction of phase-change energy storage technology into heating systems has become a new hot issue. In this study, a novel KAl(SO 4 ) 2 ·12H 2 O/expanded graphite (EG) shape-stabilized composite phase-change material (PCM), with a melting temperature of 91.6 °C, latent heat of 245.7 kJ kg −1 , and high heat conductivity of 2.07 W m −1 K −1 , is prepared to manufacture a PCM-based module for space heating. This phase-change electric heating module is developed, and its heat storage and release characteristics are investigated through experimental and numerical studies. The numerical model is validated by experimental results. In view of the numerical simulation, the structure of the module is optimized and its thermal performance is studied. Based on the optimized module, a peak-valley time-of-use (TOU) electric heating module is finally proposed. It is revealed that the module exhibits good thermal performance and is capable of satisfying the indoor heating demand. The effective heat storage and release duration is 8.12 and 15.34 h, which can perfectly realize the operating mode under the “peak-valley TOU electricity” mechanism. In this study, it is demonstrated that peak–valley electric energy storage heating devices have broad prospects in building space heating and provides reference for future application.
研究领域:
能源工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL MONITORING AND ASSESSMENT
·
2024
·Vol. 196
·期 2
·1-18
·
IF 2.9
Yue Xiupeng,Shan Yongping,Zhang Yaping,Jiao Wentao,Shen Kai
The transfer of heat and contaminants by alternating current (AC) and the removal mechanism of polycyclic aromatic hydrocarbons (PAHs) in electrical resistance heating (ERH) need further study. The main factors affecting heat transfer and water evaporation in the ERH experiment were studied, and the desorption efficiency, temporal and spatial distribution and kinetic behavior under various conditions were analyzed. The results suggested that moisture content was a necessary condition to ensure effective heating of soil, and soil moisture content above 30% was recommended. Higher voltage intensity and/or ion concentration meant stronger input power, resulting in the rapider heating process and the shorter the boiling time. At a low desorption temperature (about 100°C), the Phe desorption mainly depended on the volatilization of surface Phe and the co-boiling of Phe-water. In ERH, the participation of AC would accelerate the diffusion of pollutants from the internal pores of soil particles and their redistribution with water phase, thus improving the Phe removed by co-boiling. It was noteworthy that AC just greatly promoted solid-liquid mass transfer, but it hardly promoted desorption directly, and the removal still depended on Phe-water co-boiling. The Phe desorption efficiency could be significantly improved from 14.0~18.4% to 59.6~70.8% under the combined action of current strengthening Phe diffusion and co-boiling. Thermogravimetric and product analysis confirmed that no new organic matter was generated, but only Phe entered the gas phase through phase change.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Ze-Long Bao,Wen-Hao Geng,Song-Yi Zhang,Peng-Fei Qian,Li-Chao Jing,Xuan-Chen Liu,Tong-Yu Li,Yu-Long Guo,Ru-Yu Chang,Hong-Zhang Geng
Ubiquitous electromagnetic waves have a negative effect on precision instruments and damage human health. Therefore, multifunctional and versatile flexible transparent conductive films, which can solve the challenge of microelectronic device encapsulated and protected in harsh conditions (e.g., extreme temperature) in specific scenarios, are demanded to process electromagnetic shielding and electric heating properties. Herein, AgNWs/MXene@Ni/PET films were fabricated by MXene template-guided electrochemical deposition of nickel nanosphere as flexible transparent conductive films. The films exhibit excellent optoelectrical properties (9.8 Ω/sq @ transparency 80.3%), splendid EMI shielding performances (35.1 dB), outstanding electric heating performance (85°C at 4 V), and rapid heating capability (reaching the saturation temperature with 40 s), which are potential to be widely applied under the complex surrounding as electromagnetic shielding and electric heating. Noticeably, nickel nanosphere are regarded as resistor-capacitor circuit model on the surface of MXene, forming the structure of the capacitor. Furthermore, magnetic nickel nanospheres have synergistic effect with dielectric MXene and AgNWs, defined Dielectric-Magnetic-Dielectric synergistic absorption. In addition, Ni nanosphere generate dielectric dipole interactions with MXene, to enhance the capability of absorbing EMW. Finally, this work has the potential to be conducive to practical and commercial applications as flexible transparent electromagnetic interference and electric heating devices.
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
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Bin Yang,Haoran Wang,Meiyun Zhang,FengFeng Jia,Yuanqing Liu,Zhaoqing Lu
Undesirable electromagnetic interference (EMI) created by modern electronic devices has detrimental effects on the performance of high-precision electronic devices, information security, and human health. Therefore, lightweight, flexible, robust, and easy-to-fabricate EMI shielding materials with integrated functions are highly desirable to combat electromagnetic pollution. Herein, we report a scalable and facile strategy to prepare a flexible Ti 3 C 2 T x MXene-coated aramid paper (MAP) with high-efficiency EMI shielding and excellent electrical heating performance. The intertwined network by aramid fibers endows the aramid paper (AP) with superior mechanical properties. After selectively single/dual coating with MXene onto AP, the MAP maintains a superior tensile strength of 73.6 MPa and enormous folding endurance of 4156 times. Owing to the exceptional electrical conductivity of MXene, the MAP with a relatively low MXene content (∼9.0 wt%) exhibits excellent overall performance with an EMI shielding effectiveness (SE) of 38 dB and SE/t of 422.2 dB mm −1 . It’s noteworthy that the EMI SE of the MAP remains almost unchanged (37.4 dB) even after experiencing 5,000 repeated bending cycles. Additionally, the MAP shows satisfactory Joule electric-heating capability (a heating temperature rise of 130 °C at a low driving voltage of 5 V) and excellent flame-retardancy. This work provides a feasible strategy for large-scale production of flexible EMI shielding paper with multifunctional properties for future wearable facilities.
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
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Qiannan Wu,Zhiqiang Feng,Xingfu Zhou,Haiqing Li
All-day atmospheric water harvesting (AWH) using metal–organic frameworks (MOFs) presents an appealing approach for achieving high-yield water production in arid regions. However, current all-day MOF-based AWH strategies often involve intricate material preparation procedures and high energy input for water desorption, raising concerns about the water production cost. Leveraging the naturally abundant solar energy available in arid areas, herein, sprayable Ti3C2 MXene/silane-decorated hyperbranched polymer solutions (Ti3C2/sHBP) are presented. These solutions enable easy formation of robust, spray-applied coatings on monolithic MOFs upon exposure to sunlight, resulting in monolithic Ti3C2/sHBP-coated MOFs (TCM). The presence of Ti3C2/sHBP coatings equips TCMs with dual solar and electrical heating capabilities, enabling adaptive all-day AWH based on sunlight availability: solar heating-driven AWH when sufficient sunlight is present, combined solar/electrical heating-driven AWH when sunlight is insufficient, and electrical heating-driven AWH during periods without sunlight. Compared to traditional electrical heating-driven AWH, this adaptive all-day AWH delivers a similar water production performance with a 28.8% reduction in energy consumption for water desorption. Imparting MOF monoliths with dual heating functionality through a straightforward spray-applied coating demonstrates a novel, facile, and cost-effective strategy for enabling adaptive all-day AWH with excellent water productivity at a significantly mitigated energy cost.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Deshan Cheng,Xue Bai,Junjie Pan,Jihong Wu,Jianhua Ran,Guangming Cai,Xin Wang
Incorporating conductive components into fibrous structure for wearable applications has attracted research attention recently. However, utilizing the flexibility and wearability of textiles to maintain a stable and durable wearable performance is a big challenge, as the intrinsic properties of textiles and the conductivity of the incorporated components have to work synergically in the fibrous system without compromising. In this work, polydopamine-templated PET fabrics were prepared to grow copper nanoparticles (Cu NPs) on the surface of the knitted PET fabrics. The surface morphology, chemical composition and crystalline structure of the Cu NP-coated PET fabrics were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The results showed that Cu NP layer was successfully deposited onto the polydopamine-templated PET fabrics. The fabrics showed excellent electrical conductivity due to the loading of Cu NPs. The unique knitted structure together with the durable deposition of Cu NPs resulted in negative change in electrical resistance of the fabrics under strains, granting the fabrics the potential in wearable applications. The Cu NP-coated PET fabrics were demonstrated to be applicable as wearable strain sensors and electrical heaters.
研究领域:
材料科学
·
纺织工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yu Zhang,Qiang Gao,Shuai Zhang,Xun Fan,Jianbin Qin,Xuetao Shi,Guangcheng Zhang
Combining flexible reduced graphene oxide (rGO) with highlyelectrical conductive and flame retardant MXene to prepare electromagnetic interference (EMI) shielding composite film is a research hotspot. In this work, with a small amount of polyvinyl alcohol (PVA) used as the adhesive, rGO/MXene loaded on spunlace non-woven fabric (SNF) through a soaking-drying-reduction method to form a sandwich structure composite film (SNF covered with rGO/MXene nanosheets as the interlayer, and rGO/MXene thin films as the upper and lower layers). The related EMI shielding effectiveness (SE), electric heating performance and flame retardancy of the fabricated sandwich structure composite film have been investigated. When the mass ratio of rGO to MXene is 6:4 (named rGO/MXene-4), the average SE T of the film can reach 55.81 dB in X-band with an absorption-dominant shielding. Applying a 4 V voltage to rGO/MXene-4 film, its surface temperature can exceed 110 °C within 10 s, which indicated the fabricated rGO/MXene-4 film can be applied as a high electromagnetic shielding electric heating device with outstanding flame retardancy.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Kunming Li,Shengfei Meng,Shan Xia,Xiuyan Ren,Guanghui Gao
In recent years, the use of smart windows to adjust sunlight to achieve energy conversion has received increasing attention. In this paper, a novel smart window was easily prepared by using thermochromic hydrogels as an interlayer and indium tin oxide films as an electric heating layer. The shielding transmission rates of visible and near-infrared light reached 88.3 and 85.4% at the temperature of 25 °C, respectively. However, the transmittance at a light wavelength of 550 nm was greater than 70% after applying voltage. The smart windows with different components could possess thermochromic temperature ranging from 28 to 35 °C, which was suitable for daily life. The smart window could maintain a stable reversible thermochromic transition. Importantly, the time of light transition and the demand of energy efficiency could be adjusted by controlling the magnitude of the output voltage, which benefited the development of energy-efficient materials.
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 12
·7877-7891
·
IF 5.044
Ma Jianhua,Pu Haihong,He Pengxin,Zhao Qiangli,Pan Shaoxue,Wang Yaowu,Wang Chen
Multifunctional fibers have attracted widespread attention due to applications in flexible smart wearable devices. However, simultaneously obtaining a strong and functional woven fiber is still a great challenge owing to the conflict between the properties mentioned above. Herein, mechanically strong and highly conductive cellulose/carbon nanotube (CNT) composite fibers were spun using an aqueous alkaline/urea solution. The microstructure as well as physical properties of the resulting fibers were characterized via scanning electron microscopy, infrared spectroscopy, mechanical and electrical measurement. We demonstrated that carboxylic CNTs can be well dispersed in alkali/urea aqueous systems which also dissolved cellulose well. The subsequent wet spinning process aligned the CNTs and cellulose molecules inside the regenerated composite fiber well, enhancing the interaction between these two components and endowing the composite fiber having a 20% CNT loading with an excellent mechanical strength of 185 MPa. Benefiting from the formation of conductive paths, the composite fiber with the diameter of about 50 μm possessed an electrical conductivity value in the range of 64–1274 S/m for 5–20 wt% CNT loading. This excellent mechanical strength and high electrical conductivity enable the composite fiber to exhibit a great potential in joule heating; the heating temperature of cellulose/CNT-20 fiber reached more than 55 °C within 15 s at 9 V. In addition, the multifunctional filaments are further manufactured as a water sensor to measure humidity. This work provides a potential material that can be applied in the fields of wearable electronics and smart flexible fabrics. Graphic abstract
研究领域:
材料科学
·
智能纺织品
·
柔性电子
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）