METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2023
·Vol. 54
·期 4
·1675-1686
·
IF 3
Fu Yingzheng,Zhang Zhimin,Lu Xuchen,Yan Yan,Pan Binfeng
To increase the reaction driving force and prepare Mg–Nd master alloys, the synergistic interaction between NdCl 3 and NdF 3 was used in the magnesiothermic reduction process in NdCl 3 –NdF 3 -containing molten salt. Thermomechanical analysis was used to investigate the possibility of the synergistic interaction in molten salt. Then the verification of synergistic interaction was conducted by analyzing the composition of the molten salt and the alloys obtained in the magnesiothermic reduction process. After that, the factors affecting synergistic interaction were investigated. At last, the mechanism of the synergistic interaction between NdCl 3 and NdF 3 in molten salt was proposed and discussed. The coupling reaction formed in the magnesiothermic reduction process and the existence of three reaction mechanisms increased the reaction driving force. Mg–RE master alloys with the content of Nd being 25 to 30 wt pct were prepared under the optimum conditions and the conversion rate of NdF 3 was greater than 70.94 pct. The content of Nd and the content of various impurities in the alloys obtained both met the requirements of the commercial Mg–Nd master alloys.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2023
·Vol. 415
·期 19
·4767-4777
·
IF 4.3
Zhou Xiaoyu,Zhang Hongyan,Wang Li,Wu Ren’an
The HILIC enrichment is a greatly compatible strategy for the extraction of glycopeptides in proteomics. Herein, a boric acid and fructose-1,6-diphosphate (FDP) dual-functionalized Zr-based metal–organic framework material UIO-PBA&FDP (UIO is the abbreviation for the University of Oslo, and PBA is the abbreviation for carboxy phenylboronic acid) was synthesized, characterized with the desirable excellent hydrophilicity and thus was explored for the enrichment of N-linked glycopeptides utilizing the HILIC interaction between the glycopeptides and the hydrophilic UIO-PBA&FDP at a high level of ACN concentration. A total of 359 N-linked glycopeptides corresponding to 104 glycoproteins were identified from only 1 μL of digested human serum by the enrichment of UIO-PBA&FDP, which showed a superiorly high coverage of the identified glycopeptides. The dual hydrophilic functionalized UIO-PBA&FDP could be an efficient HILIC material for the enrichment of N-linked glycopeptides from complex biological samples.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 5
·1-15
·
IF 5.7
Xiang Jianxing,Zhou Peipei,Mei He,Liu Xiaodong,Wang Huili,Wang Xuedong,Li Yanyan
Highly efficient nanocomposites, hydrophobic molecularly imprinted magnetic covalent organic frameworks (MI-MCOF), have been farbricated by a facile Schiff-base reaction. The MI-MCOF was based on terephthalaldehyde (TPA) and 1,3,5-tris(4-aminophenyl) benzene (TAPB) as functional monomer and crosslinker, anhydrous acetic acid as catalyst, bisphenol AF as dummy template, and NiFe 2 O 4 as magnetic core. This organic framework significantly reduced the time consumption of conventional imprinted polymerization and avoided the use of traditional initiator and cross-linking agents. The synthesized MI-MCOF exhibited superior magnetic responsivity and affinity, as well as high selectivity and kinetics for bisphenol A (BPA) in water and urine samples. The equilibrium adsorption capacity ( Q e ) of BPA on the MI-MCOF was 50.65 mg g −1 , which was 3–7-fold higher than of its three structural analogues. The imprinting factor of BPA reached up to 3.17, and the selective coefficients of three analogues were all > 2.0, evidencing the excellent selectivity of fabricated nanocomposites to BPA. Based on the MI-MCOF nanocomposites, the magnetic solid-phase extraction (MSPE), combined with HPLC and fluorescence detection (HPLC-FLD), offered superior analytical performance: wide linear range of 0.1–100 μg L −1 , high correlation coefficient of 0.9996, low limit of detection of 0.020 μg L −1 , good recoveries of 83.5–110%, and relative standard deviations (RSDs) of 0.5–5.7% in environmental water, beverage, and human urine samples. Consequently, the MI-MCOF-MSPE/HPLC-FLD method provides a good prospect in selective extraction of BPA from complex matrices while replacing traditional magnetic separation and adsorption materials. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2023
·Vol. 6
·期 2
·1-12
·
IF 20.1
Li Zhiwei,An Dong,He Rizheng,Sun Zhijian,Li Jiaxiong,Zhang Zhiyi,Liu Yaqing,Wong Chingping
Herein, the carbon black/graphene oxide/natural rubber composites (CB/GO/NR) with different crosslink networks were prepared through the latex co-precipitation approach. Meanwhile, the type of crosslinks on the crack propagation resistance and fatigue life in different vulcanized systems was investigated. As a result, CB/GO/NR composites dominated by polysulfide in the conventional vulcanization (CV) system exhibited the highest tear strength (71.6 kN/m) and lowest crack growth rate (64.1 nm/cycle), the crosslink network and polysulfide-based crosslink structure in the CV system were the key factors to improve the crack propagation resistance. In addition, the relationship between viscoelasticity and dynamic crack propagation behavior of CB/GO/NR is studied, and the CV system had the lowest loss compliance modulus (J″ = 0.0014 Mpa −1 ), thus more energy dissipation occurred in the crack propagation region and the crack propagation resistance of CV system was improved. Importantly, this work can provide the guideline for designing the rubber-based composites in the practical engineering applications. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2023
·
IF 2.8
Hui Wei,Xu Xin-Yi,Wang Hai-Jun
The conversion of atmospheric carbon dioxide (CO 2 ) gas mixtures and epoxides to cyclic carbonates is an environmentally beneficial execution strategy, which is a useful platform chemical. However, this reaction is overly dependent on harsh reaction conditions including temperature and/or CO 2 pressure in the traditional conversion process. We report a series of facilely prepared functionalized ionic liquids (ILs) for the one-pot synthesis of styrene carbonate (SC) from pure/diluted CO 2 with styrene oxide (SO). Which achieved a yield up to 99% under atmospheric CO 2 conditions. In addition, with the assistance of a small amount of catalyst, the product yield remained at 99% under diluted CO 2 conditions. This result demonstrates that functionalized ILs could effectively catalyze the cycloaddition reaction of low-pressure CO 2 without any co-catalysts such as metals, organic solvents, and active additives. The density functional theory (DFT) calculations combined with experimental results revealed that the highest catalytic ability of Cat.2 was ascribed to the synergic catalysis between positive charge delocalized cations and Br − anions to efficiently activate the substrates. Furthermore, the best ILs catalyst can be reused five times without significant reduction in catalytic activity, which shows its great potential for chemical conversion of atmospheric CO 2 . Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2023
·Vol. 42
·期 7
·2226-2237
·
IF 8.8
Liu Peng,Zhu Zhi-Hao,Zhang Wen,Liu Jia-Yi,Su Zhong,Liu Xin-Hua,Yang Shi-Chun,Lai Chao
The low yield of MXene is normally related to the delaminating step, contributing to the key technical challenges in moving toward industrial applications. Here, a shearing-force-driven strategy is proposed for re-exfoliating waste MXene residue to prepare oxidatively stable MXene composites in a low-cost manner, where the strong shear stress in the assisted solvent, such as carbon nanotubes (CNTs), chitosan (CS), and polyacrylamide (PAM) aqueous solutions, acts on the surface of MXene (Ti 3 C 2 T x ) through coordination between hydroxyl and Ti atoms, resulting in a rapid and efficient exfoliation of waste Ti 3 C 2 T x residue under stirring. Furthermore, this formed coordinate bond helps to stabilize the low-valent Ti atoms on the surface of MXene, thereby enhancing the oxidative stability of Ti 3 C 2 T x . Besides, the CNT@MXene composite is selected to construct a free-standing membrane to encapsulate Si nanoparticles, achieving a high and reversible capacity after 50 cycles. This work supports the concept of valorizing waste and adopts a fluid shear force-assisted method to re-exfoliate waste residues, which greatly reduces the cost of processing and improves the chemical stability of MXene. More importantly, this work has uncovered a new direction for the commercialization of MXene composites and has significantly improved the real-world applications of MXene-based materials. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2023
·Vol. 25
·期 4
·1-11
·
IF 2.5
Fu Lili,Gao Yongjin,Zheng Ruilin,Feng Qidong,Chen Ming,Qin Tianjie,Liu Chunxiao,Wei Wei
The encapsulation of CsPbBr 3 nanocrystals (NCs) in oxide glass can effectively avoid contact of the external environment with the halide perovskite. However, the effects of hydroxyl and oxygen on NCs cannot be completely excluded because of the nature of oxide glass itself. Here, we proposed a new solution to solve these problems by using fluorophosphate (FP) glass as the embedding matrix. The composition (Br concentration) and heat treatment conditions (temperature and time) of the glass matrix were designed and optimized to improve the optical properties of CsPbBr 3 NCs. The results showed that highly pure green light with an emission peak of 534 nm and a full-width at half-maximum (FWHM) of approximately 19 nm was achieved using CsPbBr 3 NCs@glass and a light-emitting diode (LED)/laser diode (LD). The Commission Internationale de l'Eclairage (CIE) coordinates of the two devices were (0.243, 0.723) and (0.239, 0.739), with very high color purities of 96.6% and 97.3%, respectively. The photoluminescence quantum yields (PLQYs) of the samples excited at 365 nm and 450 nm wavelengths were 34.54% and 38.85%, respectively. Additionally, the chemical stability of CsPbBr 3 NCs was significantly improved by the encapsulation in FP glass, retaining 88% of the original PL intensity after 30 days of storage in deionized water. This work provides a new choice to improve the stability of a halide perovskite in a matrix.
✓ 已验证
DOI
高影响因子
Nature Sustainability
·
2023
·Vol. 6
·期 7
·816-826
·
IF 27.6
Lei Xin,Tang Qingyun,Zheng Yongping,Kidkhunthod Pinit,Zhou Xiaolong,Ji Bifa,Tang Yongbing
The electrocatalytic oxygen reduction and evolution of molecular oxygen, known as oxygen electrocatalysis, is one of the most important reactions that are central to a range of energy and environmental technologies. While the current best-performing electrocatalysts remain dominated by precious metals, carbon-based systems provide a compelling alternative owing to their intrinsic sustainability and practical applicability. Here we show a design guided by theoretical calculations that pushes the activity boundaries of carbon electrocatalysts to an unprecedented level. The rationale is that incorporating high-entropy heteroatoms could effectively minimize the local symmetry to destabilize the π-electron network of graphitic carbons and avoid too strong or too weak binding energies for intermediate species of the oxygen reduction reaction and the oxygen evolution reaction. Accordingly, our catalyst embeds five metal single atoms—Fe, Mn, Co, Ni and Cu—and two sources of N, and it exhibits superior bifunctional activities in an alkaline environment that exceed the oxygen reduction reaction and evolution reaction performance of commercial Pt/C and RuO 2 catalysts, respectively. Our work establishes electrocatalyst design principles that could open the door to sustainable solutions for critical green technologies such as fuel cells, batteries and water splitting.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2023
·Vol. 33
·期 4
·1593-1602
·
IF 2.7
Yu Caili,Lu Guangjie,Yan Chengfei,Xu Jianben,Zhang Faai
Rosin-based fluorescent polyurethane emulsion (FPU) was prepared using isophorone diisocyanate, ester of acrylic rosin and glycidyl methacrylate, 1,5-dihydroxy naphthalene (1,5-DN), and 1,4-butanediol as the raw materials. Then, rosin-based fluorescent polyurethane microspheres (FPUMs) were successfully prepared by suspension polymerization method using FPU as the main material, azodiisobutyronitrile as the initiator, and gelatin as the dispersant. FPUMs were characterized by Fourier transform infrared spectra, thermogravimetric analysis, optical microscopy, scanning electron microscopy and fluorescence spectra, and the response performance of FPUMs to pH was studied. The results showed that FPUMs were successfully prepared. With the increase of the level of 1,5-DN, the particle size of FPUMs increased gradually, and the fluorescence intensity increased first and then decreased. When the level of 1,5-DN was 3 wt.%, the average particle size was 49.3 μm, the particle distribution index ( PDI ) was 1.05, and the fluorescence intensity was the largest (3662 a.u.). The fluorescence intensity of FPUMs increased linearly with the decrease of pH, which can be used for pH detection in solution. Furthermore, the FPUMs exhibited good thermal stability, anti-interference and recoverability.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2023
·Vol. 24
·期 2
·589-601
·
IF 2.5
Gao Xiaofei,Jiang Guohua,Ruan Liming,Sun Yanfang,Yunusov Khaydar E.,Jing Yanting,Aharodnikau Uladzislau E.,Solomevich Sergey O.
Electrospun nanofibers represent a novel class of scaffold materials that show great potential in wound healing owing to relatively large surface area, better mimicry of native extracellular matrix, adjustable waterproofness and breathability, and programmable drug delivery process. In this work, electrospun polycaprolactone (PCL) and porcine acellular dermal matrix (PADM) composite nanofibrous membranes have been developed by electrospinning technology and inflated into three-dimensional (3D) structural scaffold (PCL-PADM) by gas foaming method. The obtained PCL-PADM has higher thermal stability, hydrophilicity and better cell adhesion compared with PCL. In addition, ε-polylysine (ε-PL) is further attached onto the surface of PADM/PCL to offer its good antibacterial properties. Moreover, the PADM/PCL fibrous scaffolds show excellent cytocompatibility for promoting cell proliferation. In vivo models showed that the resultant PADM/PCL fibrous scaffolds exhibit an accelerating wound healing effect through promoting expression of vascular factor (CD31) and decreasing the expression of tumor necrosis factor-α (TNF-α). These results indicate that the 3D fibrous scaffolds may be a potential wound dressing for wound closure.
✓ 已验证
产品关联
DOI
高影响因子
ARCHIVES OF MICROBIOLOGY
·
2022
·Vol. 205
·期 1
·1-14
·
IF 2.667
Mei Jinfei,Zhao Fengbei,Hou Yumei,Ahmad Sajjad,Cao Yujie,Yang Zheng,Ai Hongqi,Sheng Liangquan
For effective utilization of corncob residue to realize green circular production, using composting to obtain a high-quality and low-cost biomass fertilizer has become a very important transformation avenue. In this paper, two novel phosphorus/potassium-degradation bacterial strains were isolated from tobacco straw and identified as Bacillus aerophilus SD-1/Bacillus altitudinis SD-3 (abbreviated as SD-1/SD-3). These identified two novel bacteria SD-1/SD-3 show that the soluble phosphorus content of SD-1/SD-3 reached 360.89 mg L −1 /403.56 mg L −1 in the shake flask test, and the mass concentration of soluble potassium is 136.56 mg L −1 /139.89 mg L −1 . In addition, the Laccase (Lac), Lignin peroxidase (LiP), and Manganese peroxidase (MnP) activities of SD-1 and SD-3 are 54.45 U L −1 /394.84 U L −1 /222.79 U L −1 and 46.27 U L −1 /395.26 U L −1 /203.98 U L −1 respectively, with the carboxy-methyl cellulase (CMCase) of 72.07 U mL −1 and 52.69 U mL −1 . Meanwhile, the effects of three different combinations of cultures, i.e., no inoculation (K1), inoculation of SD-1/SD-3 on day 21 (K2) and on day 0 (G) are investigated to understand the influence on the degradation degree of corncob residue compost. The results of K2 compost treatment showed that the effective P/K content increased nearly 3.1/2.4 times, the degradation of cellulose/lignin was 49.1/68.0%, and the germination rate was 110.23%, which were higher than other experiment groups K1/G. In conclusion, knowledge of this paper will be very useful for the industrial sector for the treatment of complex corncob residue. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Electronic Materials Letters
·
2022
·Vol. 19
·期 2
·201-211
·
IF 3.151
Zhang Yanting,Cai Cheng,Chen Tao,Wu Chonggang,Gong Xinghou,Hong Jiang,Hu Tao
As microelectronics technology advances and develops, issues such as heat management and reliability of electronic components will become more exposed. Here, this paper explored a green biomass modification method for preparing composites with both good thermal conductivity and dielectric properties. Namely, boron nitride (BN) was first surface coated with the copolymerization product of tea polyphenols and theophylline, both of which can be extracted from tea leaves. Then, through solution blending the coated-BN (BN@TPP) with silicone rubber (SR), the BN@TPP/SR composites were obtained. Owing probably to the coated layer, BN@TPP were more evenly dispersed within the SR matrix, which effectively reduced the interfacial thermal resistance and improved the thermal conductivity of composites. The thermal diffusion coefficient and thermal conductivity of 40 wt% BN@TPP/SR composites reached 0.216 mm 2 /s and 0.462 W/mK, which are higher than BN/SR composites (0.155 mm 2 /s, 0.349 W/mK), respectively. Meanwhile, the 40 wt% BN@TPP/SR composite maintained dielectric constant (3.9 at 1 kHz) and low dielectric loss (0.005 at 1 kHz). In conclusion, this green biomass modification method not only provides a simple and environmentally friendly modification method for BN, but also offers a novel idea that can be applied to the practical preparation of thermally conductive materials for electronic devices. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）