POLYMERS FOR ADVANCED TECHNOLOGIES
·
2021
·Vol. 32
·期 8
·3232-3241
·
IF 3.665
Wei Liu,Rui Shi,Zejiang Zhang,Mingqiang Yan,Xiaosui Chen,Yuyan Chen
Phytic acid (IP 6 ) as the major phosphorus-containing component of certain plants, such as cereal, oil plant, and bean possesses strong capability of coordinating with metal ion to form complex salt. In this study, low concentration IP 6 was utilized in combination with Al 3+ ion to in situ form insoluble Al 3+ -IP 6 complex salt on the surface of the fabric through coordination driven layer-by-layer deposition technology without high temperature cure step, which is an attempt to provide a facile bio-based flame retardant finishing to polyamide (PA) 66 fabric. Surface structure of the treated PA fabric has been analyzed via ATR-FTIR and SEM characterization. Effect of BLs' number on the flame retardancy and burning behavior of the treated sample has been examined by the limiting oxygen index (LOI) test, the vertical burning test, microcalorimetry, and thermogravimetric analysis. The results show that 20LBL PA fabric has the highest LOI value, highest residual char yield, and lowest THR value in all the samples and no melt dripping behavior could be detected during combustion of 20LBL PA fabric. Moreover, the insolubility of Al 3+ -IP 6 salt from the surface could promote the durability of the treated fabric after laundering procedure using water single. This is the first time to use coordination driven layer-by-layer deposition technology in the fabric's flame retardant finishing.
研究领域:
材料科学
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纺织工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 9
·096501
·
IF 3.9
Kangli Chen,Yuan Li,Guanjiu Wu,Qing Wang,Chenfeng Fan,Lu Zhang,Jianzheng Song,Shumin Han
Designing Earth-abundant, cost-effective catalysts for hydrogen evolution via water splitting is essential for hydrogen generation. Adding a third metal element to binary phosphides provides the opportunity to tune their morphology, crystalline and electronic structures and thus their electrocatalytic properties. In this study, a hierarchical crystalline/amorphous Ni−Co−P compound is prepared on nickel foam (NF) with different nickel to cobalt ratio by one-step electrodepositing technique. The Ni−Co−P/NF is composed of metallic Co and amorphous phosphides. It has hierarchical morphology, consisting of ∼800 nm spherical particles in the bottom layer, ∼1.5 μm spherical particles in the middle layer, and staggered network structure on the top layer. The Ni−Co−P/NF electrode exhibits superior hydrogen evolution reaction (HER) catalytic activity in the alkaline solution, which requires only 72 mV for delivering 10 mA cm−2. More importantly, the Ni−Co−P/NF catalyst sustains the current density of 20 mAcm−2 for 53 h with negligible degradation in overpotential which shows remarkable electrochemical stability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Jianwen Xu,Hao Luo,Jun Ma,Mingdao Zhang,Li Song,Yachao Jin
Li/CF x batteries are used in a wide range of applications thanks to their high theoretical specific energy of up to 2180 mWh/g. However, the high resistivity and unavoidable polarization of the CF x material itself result in low Li-ion migration rates and rate performance. Here, a simple strategy is developed to enhance the rate performances of Li/CF x batteries without sacrificing the specific capacity by in-situ reduction of Ag + ions in ultrafine CF x by UV illumination. The deposited Ag particles provided an efficient pathway for rapid electron transport facilitating Li + diffusion throughout the fabricated electrodes. The optimal CF x @Ag can still achieve a specific energy of discharge of 1645 mWh/g and a specific capacity of 745 mAh/g at a high rate (1 C). This UV deposition technique creates a novel technology. This technique effectively improves the mass transfer efficiency of lithium ions and electrons, pulse resistance, and reduces the internal resistance of Li/CF x batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 103
·100790-100795
·
IF 3.289
Daixiong Zhang,Qing Xiang,Xueming Li
As a nanoenergetic material with high energy density, nanothermite coatings composed of metal and oxidant have potential applications in electric-explosion devices. In this study, a novel highly reactive Al–Cr2O3 coating was successfully fabricated via electrophoretic deposition (EPD) technology. Moreover, with the advantage of high fabrication rate by employing high concentration of Al and Cr2O3 nanoparticles, an electric-explosion device with successful explosion could be easily obtained via assembling an Al–Cr2O3 coating onto Cu electric-explosion bridges in only 1 minute, which is much more efficient than other coating technologies. More importantly, considering the successful preparation of other reactive coatings in previous work, we also believe that EPD is a promising general strategy for rapidly preparing electric-explosion device with many other nanoenergetic material coatings such as nanothermite and bimetallic reactive composites.
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
CRYSTAL GROWTH & DESIGN
·
2022
·
IF 4.01
Yao Chen,Bingchu Mei,Huiling Liu,Zaichun Sun,Huijuan Zhang
Achieving the synthesis of bismuth sulfide (Bi2S3) thin films with high crystallinity and controllable morphology via simple and energy-saving deposition processes is highly desired. A novel, green, and open-air pressure solution-based deposition technique was developed to prepare horizontally orientated Bi2S3 thin films by applying less toxic and commercially available BiCl3 and thiourea as precursors. The deposition time was effectively shortened to the minute level via controlling the mixing mode of the precursors. The crystallinity and surface morphology of Bi2S3 were highly dependent on the synthesis temperatures. Bi2S3 thin films synthesized at a moderate temperature of 450 °C possessed a continuous surface with high crystallinity and exhibited superior photoelectrochemical performance with a high photocurrent density of 2.6 mA/cm2 at 0.6 V vs Ag/AgCl. The promising photoelectrochemical performance can be attributed to the high transfer efficiency of photogenerated electron–hole pairs owing to the small interfacial resistance and long lifetime of photogenerated carriers.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2021
·
IF 5.875
Yu Zheng,Feihuang Deng,Bo Wang,Yue Wu,Qing Luo,Xianghao Zuo,Xin Liu,Lihua Cao,Min Li,Haohui Lu,Senping Cheng,Xiaoling Li
Three-dimensional printing (3DP) technology offers unique advantages for pharmaceutical applications. However, most of current 3D printing methods and instrumentations are not specifically designed and developed for pharmaceutical applications. To meet the needs in pharmaceutical applications for precision, compatibility with a wide range of pharmaceutical excipients and drug materials without additional processing, high throughput and GMP compliance, an extrusion-based 3D printer based on Melt Extrusion Deposition (MED™) 3D printing technology was developed in this study. This technology can process powder pharmaceutical excipients and drugs directly without the need of preparing filament as required by FDM 3D printing. Six different tablet designs based on compartment models were used to demonstrate the precision and reproducibility of this technology. The designed tablets were fabricated using the GMP-compliant MED™ 3D printer and were evaluated in vitro for drug release and in vivo for selected designs using male beagle dogs. Tablet designs with one or more compartments showed versatile release characteristics in modulating the release onset time, release kinetics, duration of release and mode of release. Multiple drugs or formulations were fabricated into a single tablet to achieve independent release kinetics for each drug or to fine-tune the pharmacokinetic profile of a drug. Building upon the theoretical analysis of models, precision and reproducibility of MED™ 3D printing technology, a novel product development approach, 3D printing formulation by design (3DPFbD®) was developed to provide an efficient tool for fast and efficient pharmaceutical product development. The MED™ 3D printing represents a novel and promising technology platform encompassing design and development of modified drug release products and has potential to impact the drug delivery and pharmaceutical product development.
研究领域:
制药工程
·
药物递送系统
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2020
·
IF 5.778
Yi Xia,Jieqi Feng,Siqi Fan,Wan Zhou,Qizhou Dai
In this study, the CNTs were successfully compounded in PbO 2 electrode through composite electrodeposition technology to obtain multi-layer CNT-PbO 2 electrode. Scanning electron microscope , X-ray diffraction and X-ray Photoelectron Spectroscopy were comprehensively used to characterize the lead dioxide electrode and the electrochemical performance were also tested by cyclic voltammetry, and electrochemical impedance spectroscopy. Results showed that CNT-PbO 2 significantly improved the electrochemical performance, which was attributed to that the compound of CNTs in PbO 2 improved the active sites on the surface, with higher oxidation peaks, smaller particle size, larger specific surface area, and lower charge transfer resistance. In the degradation experiment, the chemical oxygen demand removal efficiency of isoniazid by CNT-PbO 2 electrode were 1.37 times of that by pure PbO 2 electrode. The main influence factors on the degradation of ISN, such as initial ISN concentration, Na 2 SO 4 concentration, current density and initial pH value was analyzed in detail. Considered comprehensively the effects of ISN removal efficiency, COD and average current efficiency, the degradation of ISN and COD reached 99.4% and 86.8%, respectively, after the electrode was degraded by electrochemical oxidation for 120 min under the best conditions. In addition, the degradation mechanism of ISN in electrochemical oxidation was studied. According to the intermediate products detected by GC-MS, the possible degradation pathway of ISN in electrochemical oxidation system were proposed.
研究领域:
环境科学
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材料科学
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电化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xueshan Sun,Xuezhen Wang,Yingli Wan,Yafei Guo,Tianlong Deng,Xiaoping Yu
The effective separation between Li + and Mg 2+ in high Mg/Li ratio brine and the high-efficiency dehydration of MgCl 2 ·6H 2 O during metallic Mg production are two major challenges of salt lake chemical industry. Herein, a functional ionic liquid with high electroconductivity and extraction rate on Mg 2+ was successfully synthesized with methyltrioctylammonium ([A336] + ) as the cation and saponified di-(2-ethylhexyl) phosphoric ([P204] − ) as the anion. When methyl isobutyl ketone (MIBK) was used as the diluent, the single extraction rate for Mg 2+ with a concentration up to 50.42 g·L −1 reached 83.99% at the phase ratio R (O/A) = 10:1, and the electroconductivity of the organic phase after extraction was more than 550 μS·cm −1 . The Mg 2+ was confirmed to be extracted by coordination interaction to form MgCl 2 ·2[A336][P204], and meanwhile the low intermiscibility of the extraction system with brine was also illustrated by the extraction phase equilibrium . Based on these excellent performances, the extraction system was successfully applied for Mg 2+ and Ca 2+ purification from lithium-rich brine. In particular, because of the high extraction rate and electroconductivity of the developed system, a novel “extraction-electrodeposition” technology was proposed for metallic Mg production from salt lake brine, by which it successfully avoids the dehydration process of MgCl 2 ·6H 2 O and the high temperature molting of anhydrous MgCl 2 during the traditional production of metallic Mg by electrolysis. The simplicity and low energy consumption properties of the proposed technology provides a new strategy for the effective exploitation of Li and Mg resources in salt lake brine.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Taotao Liang,Xiaogang Guo,Binfang Yuan,Shuying Kong,Huisheng Huang,Daoling Fu,Fulan Zhang,Jianhua Xu,Xueming Li
The design of functional anti-wetting ceramic coatings is always a bottleneck restricting the development of ceramic techniques. This study proposes a liquid phase synthesis method to fabricate α-Fe 2 O 3 (III) ceramic powders with promising applications and introduces a facile electrophoretic deposition (EPD) technique to construct the corresponding functionalized hydrophobic films – superhydrophobic functionalized α-Fe 2 O 3 ceramic films (SFOFS) with roughly even distribution and a high water contact angle (CA) of 169°±1° – followed by heat posttreatments. The microtopography and crystalline structures of the product were investigated by FESEM, EDX , and XRD techniques. The EPD controllability of SFOFS was studied by adjusting the EPD time and the applied field strengths . In addition, the SFOFS show excellent long-term anti-wetting properties for twenty-four months after undergoing a series of tests, including soaking, water droplet impacting, immersion by droplets with different surface tensions and exposure to different gases and relative humidity conditions, etc. This study substantially helps the design of other kinds of functional anti-wetting films through the proposed convenient method beyond the oxide limit.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Shaojie Ma,Yuchen Zhu,Boxin Chen,Bin Zhao,Fei Feng
Background The micro gas chromatography column (μGCC) is one of the key components of the miniaturized gas chromatography system. However, light alkanes are difficult to be separated by a micro gas chromatography column , especially for methane and ethane, because the length of μGCC is limited by the area of a silicon substrate. More importantly, the heterogeneous microchannel surface formed by silicon glass bonding causes uneven stationary phase coating and the forces between the untreated microchannel surfaces and the stationary phase materials are weak, which will prevent the improvement of separation performance. Results In this paper, a micro gas chromatography column (μGCC) with uniform HKUST-1 stationary phase is reported. Significantly, an alumina film prepared by the atomic layer deposition (ALD) technique is used to homogenize the heterogeneous microchannels. The alumina is a hydrophilic material and the alumina made by the ALD technique is uniform. The forces between hydrophilic alumina film and HKUST-1 are strong, which can greatly improve the coating uniformity of the hydrophilic stationary phase HKUST-1. The test results show that the μGCC could baseline separate the light alkane mixtures (CH 4 , C 2 H 6 , C 3 H 8 , and C 4 H 10 ) at the high testing temperature of 120 °C. The maximum resolution of the difficult-separated methane and ethane reached 19.2, which is 108 % higher than the μGCC using the same stationary phase without homogenizing the microchannel inner surface. Significance The μGCC uses ALD alumina film to homogenize the microchannel inner surface; meanwhile, hydrophilic ALD alumina has a strong electrostatic attraction with the hydrophilic stationary phase HKUST-1. Homogeneous microchannel surface and strong electrostatic attraction are favorable to obtain uniform stationary phase which greatly improves the separation performance, resulting in a large resolution for methane and ethane. The μGCC has broad application prospects in light alkane separation.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
OPTICS EXPRESS
·
2021
·Vol. 29
·期 9
·13968-13977
·
IF 3.894
Yuhang Song,Yuhang Song,Yuhang Song,Qin Wang,Qin Wang,Qin Wang,Ying Luo,Ying Luo,Wenxi Cao,Wenxi Cao,Zijin Cao,Zijin Cao,Changchun Yan,Changchun Yan,Aixia Lu,Aixia Lu,Aixia Lu,Caiqin Han,Caiqin Han,Caiqin Han
A silver nano-tripod (AgNT) structure with a high-density “hot spots” distribution was fabricated by a tilting angle deposition technique. The electric field simulation distribution showed that the electric field enhancement of the AgNT structures is optimal when the tilting angle is 72°. Such AgNT substrates were successfully obtained experimentally when the included angle between the silver vapor and the normal of the sample platform was set to 86°. R6G and CV were used as probe molecules to investigate the SERS activity of AgNT, which revealed that the detection limits of AgNT for R6G and CV were 2.24×10−8 M and 4.01×10−8 M, the relative standard deviations (RSDs) were 4.26% and 4.44%, and the enhancement factors (EFs) were 9.58×106 and 1.16×107, respectively. The AgNT substrates with simple preparation and high distribution density of “hot spots” illustrate a good application prospect in environmental monitoring.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Jing Dong,Tingting Sun,Yixin Zhang,Hong Zhang,Songrang Lu,Dongmei Hu,Jianfeng Chen,Lianbin Xu
Water electrolysis is a clean and efficient route for producing high-purity hydrogen. Developing highly efficient, stable and inexpensive electrocatalysts to replace Pt is currently a major challenge for the widespread application of water splitting. Herein, we report a facile and novel strategy for the synthesis of mesoporous NiCo alloy nanoparticle/reduced graphene oxide (MNiCo/rGO) composites via electroless deposition technique . Owing to the synergistic interaction of Ni and Co, the mesoporous structure of NiCo alloy, and the optimized combination of the mesoporous NiCo with rGO, the obtained optimal MNi 63 Co 37 /rGO 5 catalyst exhibits outstanding electrocatalytic performance for hydrogen evolution reaction (HER) with a low overpotential of 115 mV to reach the current density of 10 mA cm −2 , and a small Tafel slope of 45 mV dec –1 , as well as a high durability in alkaline solution. These remarkable merits make it a favorable alternative to noble metal Pt-based catalysts for HER, thereby further promoting the development of non-noble metal electrocatalysts .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）