JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiangchao Zhao,Yuansong Luo,Xiujian Zhao
NASICON-type solid electrolyte Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) has become an excellent substitute for organic liquid electrolytes due to its high ionic conductivity and exceptional air stability. However, its application is limited by its poor sintering characteristics and high grain boundary resistance. In this study, TeO 2 was introduced into LATP as a sintering aid to promote its sintering, and its properties were measured by XRD , SEM, XPS, EIS and dilatometry . The results show that the addition of TeO 2 can form eutectic liquid phase in LATP ceramic pellets during sintering, thus effectively promoting particle sintering. Not only the grain size was greatly increased, but also grain boundary and pore defects were reduced. With the help of TeO 2 , the performance of LATP is greatly improved when sintered at only 750 °C, the relative density and total ionic conductivity reached 90.64% and 0.207 mS/cm, respectively. The highest total ionic conductivity of 0.279 mS/cm and the highest relative density of 93.81% were obtained when sintered at 800 ℃ and 950 ℃, respectively. However, due to the volatilization of Li and Te at high temperature, the relative density and total ionic conductivity of LATP with TeO 2 added sintered at high temperature have only a small increase compared to that without addition. In conclusion, this study provides a feasible scheme for improving LATP performance.
研究领域:
材料科学
·
电化学
·
固体物理
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Yue Zhao,Jun-Bo Xu,Ji-Ming Hu
In this work, a porous silica film pretreatment layer with a thickness up to 8 μm was prepared on the surface of mild steels with the aid of alkaline catalysis. This was achieved by pre-depositing an alkaline film on the substrate before deposition of silica layer. Polymeric resin was then painted on silica film pretreatment layer for long-term protection. Active protection performance was further achieved by loading corrosion inhibitors in the pretreatment layer. Electrochemical impedance spectroscopy and scanning vibrating electrode technique both demonstrate the excellent corrosion performance of the painting system constructed on such a pretreatment layer.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yuanping Hao,Changqing Yuan,Jing Deng,Weiping Zheng,Yanjing Ji,Qihui Zhou
Soft-tissue trauma emergency caused by natural disasters and traffic accidents is highly prevalent, which can result in massive bleeding, pathogen infection, and even death. Although numerous tissue adhesives can bind to tissue surfaces and cover wounds, most of them still have several deficiencies, including long gelation time, poor adhesive strength, and anti-infection, making them inappropriate for use as first-aid bandages. Herein, injectable and self-healing four-arm-PEG-CHO/polyethyleneimine (PEI) tissue adhesives as liquid first-aid supplies are developed via the dynamic Schiff base reaction for trauma emergency. It is found that the prepared hydrogel adhesives exhibit short and controlled gelation time (9∼88 s), strong adhesive strength, and excellent antibacterial ability. Their hemostatic and antimicrobial performances can be tailored by the mass ratio of four-arm-PEG-CHO/PEI. Moreover, in vitro biological assays display that the developed tissue adhesives possess satisfactory cyto/hemocompatibility. Importantly, in vivo the designed adhesives show fast hemostatic capacity and excellent anti-infection as compared to commercial Prontosan gel. Thus, this work indicates that the four-arm-PEG-CHO/PEI first-aid tissue adhesives display great potential for wound emergency management.
研究领域:
材料科学
·
生物医学工程
·
急诊医学
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Min Yuan,Feng Luo,Zeping Wang,Jiabing Yu,Hui Li,Xianping Chen
Band-aids, which possess breathable woven fabric and a compressible cotton pad, can be a potential substrate for smart wearable electronics. However, integrating energy storage modules and multiple functions into commercial band-aids through a simple and practical method is still a huge challenge. In this work, we design a multifunctional intelligent wearable band-aid, which integrates the high-performance micro-supercapacitor (MSC) with humidity and pressure sensors, through a facile laser-scribing and single-wall carbon nanotubes (CNT) drop-casting strategy. As a proof of concept, the fabricated laser-induced sulfur-doped porous graphene-based MSC on the band-aid surface offers an excellent areal capacitance of 68.6 mF cm −2 and good cyclic stability. Also, the designed humidity sensor has a fast and reversible real-time response and a wide relative humidity (RH) sensing range (11–97% RH). Remarkably, the obtained capacitive pressure sensor has a high sensitivity of 25.15 kPa −1 , an ultra-broad linear range (0 ∼ 300 kPa) and a low limit of detection of 2.92 Pa. This proposed band-aid based multifunctional integrated system paves a new avenue for the development of smart wearable and flexible electronics.
研究领域:
材料科学
·
生物医学工程
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Ze Pu Wang,Wen Hong Ruan,Min Zhi Rong,Ming Qiu Zhang
To tackle the challenge of producing highly filled polymer composites using the traditional injection molding technique, which is characterized by the fairly high melt viscosity that makes mold filling difficult, the authors propose a solution based on dynamic covalent chemistry. As demonstrated by the proof-of-concept experiments, the 4-arm star-shaped polycaprolactone (PCL) oligomers and microcrystalline cellulose (MCC) are crosslinked by the reversible Diels-Alder (DA) bonds. The flowability of the compounds greatly decreases due to the dissociation of the intercomponent DA bonds at the retro-reaction temperature, and the networked architecture is reconstructed during cooling as a result of the forward DA reaction. Consequently, the high-loading MCC fillers are well distributed in the matrix and covalently bonded to the nearby PCL, forming a striking contrast to the control in which linear PCL acts as the matrix. The DA bonds crosslinked biodegradable PCL composites exhibit decent mechanical strength (20.7 MPa) even at the MCC fraction of 65 wt%, which is superior to those (5–12.2 MPa) of the highly filled PCL composites (with filler contents of 50–63.8 wt%) reported so far. The proposed approach has sufficient expansibility for the fabrication of the highly filled polymer composites constructed by other types of matrix and fillers.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2025
·
IF 11.6
Lingjun Zeng,Yu Zhang,Lan Xie,Bai Xue,Qiang Zheng
High-efficient absorption-dominant electromagnetic interference (EMI) shielding materials with both ultra-high total EMI shielding effectiveness (SE T > 100 dB) and absorption coefficient (A>0.95) as ideal “green” shielding materials are imminently demanded yet scarcely reported for minimizing secondary EMI radiation pollution. Herein, pyrolytic carbon nanotube (CNT)@FeCo/CNT/silver-coated tetra-needle-like zinc oxide whisker/poly ( l -lactic acid) (CNT@FeCo-700/CNT/T-ZnO@Ag/PLA) composite foams were successfully fabricated based on a conductivity-gradient modular design. The rational layout of the gradient conductive network structures of CNT@FeCo-700/PLA, CNT/PLA, and T-ZnO@Ag/PLA layers enables the “strong absorption-weak absorption-reflection-reabsorption” shielding mechanism. The optimized foam features an ultra-high average EMI SE T of 104.02 dB, including an absorption SE (SE A ) of 103.95 dB and a reflection SE (SE R ) of only 0.07 dB. Notably, its average absorption coefficient (A) reaches 0.984 (the maximum value of 0.998), surpassing most of the EMI shielding composites reported to date. By learning the experimental datasets of EMI SE T and A at different frequency, Fully Connected Neural Networks (FCNN) exhibits excellent prediction accuracy on unseen samples, with average Root Mean Square Error (RMSE) values of only 1.251 and 0.014 for EMI SE T and A, and average errors of less than 2.82 % and 1.52 % for EMI SE T and A, respectively, suggesting that it is highly applicable for this work and can effectively reduce the experimental costs. This work offers an innovative strategy for fabricating high-efficient absorption-dominant EMI shielding materials and reduce experimental consumption.
研究领域:
材料科学
·
电磁学
·
高分子复合材料
·
功能材料
·
计算材料学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2015
·
IF 3.512
Yu Huang,Xiongzhi Zhang,Kaiqiao Fu,Houbin Li,Chi Huang,Shiju Yuan
In the present study, a series of cationic spherical polyelectrolyte brushes (CSPB), consisting of a silica core and a shell of copolymer of acrylamide (AM) and [2-(methacryloyloxy)ethyl] trimethylammonium chloride (METAC), were synthesized. Then a dual-component system which was composed of CSPB and anionic polyacrylamide (APAM) was used to improve the retention and drainage properties of bleached eucalyptus kraft pulp and precipitated calcium carbonate (PCC). Comparative researches about retention and drainage properties between CSPB/APAM system and cationic starch/APAM system were undertaken as well. Results showed that further improvement in first-pass retention (FPR) of pulp, FPR of PCC and drainage time could be achieved by CSPB/APAM system. It was also found that increase of shear intensity led to a decrease in retention efficiency, while it had no significant influence on drainage time of pulp. However, due to the symmetrical or quasi-symmetrical spherical brush structure, CSPB still showed better retention efficiency than cationic starch under different turbulent conditions. Furthermore, the flocculation mechanism of the CSPB/APAM dual-component system was proposed in the paper.
研究领域:
材料科学
·
造纸工程
✓ 已验证
DOI
高影响因子
Advanced Healthcare Materials
·
2024
·
IF 10
Ziyuan Zeng,Jiaming Zhang,Yige Gao,Yuanyuan Song,Luoming Liu,Miaomiao Zhu,Wenjing Ma,Jiajun Fu,Dongyang Miao,Chaobo Huang,Ranhua Xiong
The global military and civilian sectors express widespread concern over the significant hemorrhage associated with various acute wounds. Such bleedings lead to numerous casualties in military confrontations, traffic accidents, and surgical injuries. Consequently, the rapid control of the bleedings, particularly for extensive and pressurized wounds, is crucial in first-aid situations. In this work, a double-layered bioadhesive patch that combines a superabsorbent adhesive hydrogel with a highly tough antibacterial polyurethane film, which is called as Bio-Patch, is proposed. The Bio-Patch demonstrates superior mechanical strength and forms robust bioadhesion to acute bleeding wounds. Furthermore, the Bio-Patch enables protecting against external Gram-negative and Gram-positive bacteria. Thanks to the double-layered structures having synergistic functions of stable barrier and robust adhesion, the Bio-Patch provides optimal wound sealing (burst strength exceeding 310 mmHg) both in vitro and in vivo. It also demonstrates superior hemostatic effects (less than 30 s) in vivo. This offers promising opportunities for rapid control of extensive and pressurized hemorrhage in first-aid clinical scenarios.
研究领域:
生物医学工程
·
材料科学
·
创伤护理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xuanzhi Chen,Yehua Li,Yujie Qi,Pengjin Huang,Haidong Wu,Xin Deng,Shanghua Wu
In this study, self-synthesized Gd 3 Si 2 C 2 and MgO were used as sintering aids to fabricate Si 3 N 4 ceramics via gas-pressure sintering. The results indicated that Gd 3 Si 2 C 2 reacted with inherent SiO 2 on the Si 3 N 4 surface to form Gd 2 O 3 and β-Si 3 N 4 in situ, thereby increasing the N/O ratio of the liquid phase. In addition, in situ β-Si 3 N 4 induced grain growth, enhancing the thermal conductivity of Si 3 N 4 ceramics while maintaining excellent mechanical properties. Compared to the samples with Gd 2 O 3 and MgO as sintering aids, those with Gd 3 Si 2 C 2 and MgO as sintering aids demonstrated superior overall performance with the thermal conductivity, bending strength, fracture toughness, and Vickers hardness of 101.96 W⋅m −1 ⋅K −1 , 848.26 ± 4.66 MPa, 6.23 ± 0.15 MPa⋅m 1/2 , and 16.56 ± 0.43 GPa, respectively.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Hongyang Zhou,Qiang Xie,Yihuan Zhou,Dingcheng Liang,Jinchang Liu,Bingjie Wang,Yutong Sha,Shimei Gu
During the purification of industrial organic emissions containing reactive volatile organic compounds (VOCs) such as styrene by activated carbon (AC) adsorption, it is a common phenomenon that desorption of VOCs from AC is hindered by heel, the VOCs, and/or VOC-derived matters accumulating in AC pores. Herein, heel was extracted with the aid of supercritical dichloromethane and was characterized in detail to identify its composition. Then, the thermal behavior and effects of heel on the pore structure, morphology, and surface chemistry of spent AC and regenerated AC were studied. The results show that the accumulating styrene in micropores reacted and formed a heel. The presence of metal elements and acidic functional groups may initiate or promote the polymerization of styrene. The dominant component of the heel was triphenylbenzene, and its formation process could be depicted by the Mayo polymerization mechanism.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2021
·
IF 6.558
Yan-Mei Liang,Hui Yang,Bo Zhou,Yang Chen,Min Yang,Ke-Su Wei,Xiu-Fang Yan,Chao Kang
The recycling and reutilization of biomass wastes are significant for environmental protection and sustainable development. Recently, there have many studies on utilizing biomass wastes to produce carbon dots . Whereas, the spectrum shift effect that occurs in the quantitative application of carbon dots as fluorescent probes limits the accuracy of the quantitative analysis . In this work, waste tobacco leaves were used as the carbon source for synthesizing a novel carbon dots (CDs(WTL)) through a facile hydrothermal method . The CDs(WTL) possess a series of excellent properties, including good water solubility, well stability, and high fluorescence quantum yield . The fluorescent intensity of the CDs(WTL) can be quenched by tetracycline (TC) obviously, but there is a spectrum shift. In order to use the CDs(WTL) as fluorescent probes to quantify TC with higher accuracy, a quantification fluorescence model (QFM) was introduced to overcome this spectrum shift effect that often occurs. The coefficient of determination ( R 2 ) of traditional quantification model (TQ), partial least squares (PLS), and QFM are 0.9672, 0.9834, and 0.9991, respectively; the average relative predictive error (ARPE) of TQ, PLS, and QFM are 8.8%, 4.5%, and 3.9% for the spiked water samples, and 21.9%, 22.0%, and 2.9% for spiked tablet samples, respectively. The obtained results suggest that QFM is more accurate than PLS and TQ for the TC detection. By utilizing QFM, the spike recoveries (mean ± standard deviation) in three kinds of real tablet samples produced by different manufacturers are 98.9 ± 3.6%, 102.5 ± 6.2%, and 98.5 ± 2.7%, respectively; the spike recovery in river water samples is 99.4 ± 5.0%. In addition, high performance liquid chromatography (HPLC) was used as a reference method, the F and t tests suggest that there are no significant differences on the precision and accuracy between QFM and HPLC methods.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Separation Science Plus
·
2022
·Vol. 5
·期 9
·529-538
·
IF 0
Li-Jing Peng,Guo-Ying Chen,Hang-Yu Zhou,Feng-Qing Yang
This work describes a simple and reliable colorimetric method based on the gold nanoparticles without any modification, which can realize the rapid, sensitive, and quantitative detection of lead (Pb 2+ ) and copper (Cu 2+ ) ions, providing a reference for monitoring metal ions in the environmental water. When Pb 2+ was added to the gold nanoparticles solution containing a low concentration of L-Cysteine, the combination of Pb 2+ and L-Cysteine can induce the aggregation of gold nanoparticles. On the contrary, Cu 2+ can catalyze the oxidation of L-Cysteine and destroy the formation of the Au-S bond between L-Cysteine and gold nanoparticles, thereby preventing the aggregation of gold nanoparticles. As the ultraviolet-visible spectrum of gold nanoparticle solution is closely related to their aggregation status, the Cu 2+ and Pb 2+ can be determined. The calibration curves, which are constructed based on ratios of the absorbance at 650 nm and 520 nm of gold nanoparticles, display good linearity in the range of 50.0−2.5 × 10 3 nM for Pb 2+ and 25.0−300.0 nM for Cu 2+ , respectively. The limits of quantitation of Pb 2+ and Cu 2+ are determined to be 50.0 and 25.0 nM, respectively. In addition, the spiked recoveries of Pb 2+ and Cu 2+ in real water samples are 94.6−112.5 and 87.3−114.7% with a relative standard deviation of less than 6.3%, respectively.
研究领域:
分析化学
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）