CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Keke Guan,Wen Lei,Honghong Wang,Xuefeng Liu,Jin Luo,Jianghao liu,Quanli Jia,Haijun Zhang,Shaowei Zhang
In this work, Ti 3 AlC 2 powders with high purity were prepared by microwave-assisted molten salt method (MA-MS). The synthesis parameters (such as raw materials ratio, heating temperature and reactant materials) and the formation mechanisms were systematically investigated. The results indicate that Ti 3 AlC 2 powders with a high purity up to 98.5% are prepared using TiH 2 /Al/1.8TiC mixture as reactant materials, and NaCl–KCl as molten salt by microwave-assisted heating at 1050 °C for 30 min. Compared with traditional heating methods, both the synthesis temperature and holding time of highly pure Ti 3 AlC 2 powders synthesized in this work are much milder. This high-efficiency synthesis approach could be ascribed to the synergistic effect of molten salt and microwave heating. Moreover, the TiH 2 –Al–TiC starting material is more suitable for the rapid synthesis of Ti 3 AlC 2 powders with high purity via present microwave-assisted molten salt method than that TiH 2 –Al–C.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2017
·
IF 3.133
Chao-Qian Liu,Bin Wen,Nan Wang,Shi-Min Liu,Hua-Lin Wang,Wei-Wei Jiang,Wan-Yu Ding,Shi-Chong Xu,Wei-Ping Chai
The mechanochemical process was employed to synthesize Cu 2 ZnSnS 4 (CZTS) powder using elemental powders of Cu, Zn, Sn and S as the source materials. The phase evolution of the synthesized powders dependent on the milling parameters was systematically researched according to Raman and X-ray diffraction measurements . It is noteworthy that the kesterite CZTS phase were observed in the mechanochemical process milling only for 3 h, but some binary metal sulfides always existed in the synthesized powders. Moreover, the formation mechanism of the CZTS phase in the mechanochemical processes was proposed. Further, the sintering behaviors of the synthesized powders were systematically investigated also, i.e., the effects of sintering temperature and milling parameters were discussed on the phase, residual stress, composition, cross-section morphologies and relative densities. It was found that the longer the milling time and/or the higher the milling rotation speed, the better the sintering properties of the synthesized powders.
研究领域:
材料科学
·
无机化学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Minxia Liu,Dang Wu,Dongling Qin,Gang Yang
A spray-drying assisted solid-state method to prepare spherical layer-structured H 2 TiO 3 ion sieve (LSTIS) particles is reported herein. The effects of synthesis parameters (calcination temperature, calcination time, and the lithium-titanium molar ratio) on adsorption–desorption performance (the delithiation ratio, titanium dissolution loss, and the adsorption capacity) were investigated. The as-prepared LSTIS exhibited an equilibrium adsorption capacity of 30.08 mg·g −1 (average of 25.85 mg·g −1 over 5 cycles) and ultra-low titanium dissolution loss of less than 0.12% (average of 0.086% over 5 cycles). The LSTIS showed excellent selectivity toward Li + in Na + , K + , Mg 2+ , and Ca 2+ coexisting saline solutions where its adsorption capacity reached 27.45 mg·g −1 and the separation factors of Li + over the coexisting cations exceeded 100. The data suggests that the LSTIS is promising to competitively enrich Li + from saline solutions.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Computational and Structural Biotechnology Journal
·
2024
·
IF 4.4
Irini Furxhi,Lara Faccani,Ilaria Zanoni,Andrea Brigliadori,Maurizio Vespignani,Anna Luisa Costa
The synthesis of silver nanoparticles with controlled physicochemical properties is essential for governing their intended functionalities and safety profiles. However, synthesis process involves multiple parameters that could influence the resulting properties. This challenge could be addressed with the development of predictive models that forecast endpoints based on key synthesis parameters. In this study, we manually extracted synthesis-related data from the literature and leveraged various machine learning algorithms. Data extraction included parameters such as reactant concentrations, experimental conditions, as well as physicochemical properties. The antibacterial efficiencies and toxicological profiles of the synthesized nanoparticles were also extracted. In a second step, based on data completeness, we employed regression algorithms to establish relationships between synthesis parameters and desired endpoints and to build predictive models. The models for core size and antibacterial efficiency were trained and validated using a cross-validation approach. Finally, the features’ impact was evaluated via Shapley values to provide insights into the contribution of features to the predictions. Factors such as synthesis duration, scale of synthesis and the choice of capping agents emerged as the most significant predictors. This study demonstrated the potential of machine learning to aid in the rational design of synthesis process and paves the way for the safe-by-design principles development by providing insights into the optimization of the synthesis process to achieve the desired properties. Finally, this study provides a valuable dataset compiled from literature sources with significant time and effort from multiple researchers. Access to such datasets notably aids computational advances in the field of nanotechnology.
研究领域:
纳米技术
·
生物学
·
医学
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 29
·21107-21117
·
IF 3.9
Yang Bai,Jianing He,Jinsheng Sun,Ren Wang,Ruifang Wang
To treat the issue of increased resource wastage due to the higher plugging tendencies of oil-based drilling fluids (OBDF) relative to water-based drilling fluids, this study synthesized a ternary composite oil-absorbing resin and optimized its synthesis parameters. The influence of temperature variations on the resin's oil absorption capacity was assessed. Techniques such as infrared spectroscopy, scanning electron microscopy, TGA-DSC measurements, crosslinking degree analysis, contact angle analysis, X-ray photoelectron spectrometry analysis and examination of the resin's plugging mechanism were employed to investigate its molecular structure, oil absorption properties, and plugging efficiency. Additionally, the impact of various synthesis conditions on the oil absorption expansion rate of the oil-absorbing resin was examined. The findings indicate that the resin developed in this research maintains robust oil absorption capabilities at 160 °C, exhibiting an oil absorption expansion rate of 12.5 g g−1. At this temperature, the composite resin particles effectively sealed leaks of widths 0.25, 0.5, and 0.75 μm. Comparative analysis revealed that adding 3% of these resin particles to OBDF significantly enhanced the sealing of fractures. Remarkably, at 160 °C, OBDF amended with resin particles managed to completely seal fractures measuring 0.25 μm. The novelty of this study is attributed to the utilization of styrene for enhancing the resin's rigidity, coupled with the application of octadecyl methacrylate, which contains long-chain alkyl groups, to optimize the oil absorption and expansion characteristics of the oil-absorbing resin.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2024
·Vol. 26
·期 6
·1-13
·
IF 2.1
Wang Xin-Yu,Chen Yan-Ming,Nie Xiao-Bo,Zhang Li-Li
Copper oxide nanoparticles (CuO NPs) are attractive owing to their size- and shape-dependent properties, as well as their diverse applications. Therefore, the synthesis of environmentally friendly CuO NPs using low-toxicity reagents remains significant. In this study, a benign wet-chemical process was applied to synthesize CuO NPs in an alcohol-water mixture, employing copper acetate as the precursor and sodium oleate as the surfactant. Multiple experimental parameters, including water content, the molar ratio of sodium oleate to copper acetate, types of alcohols, and reaction temperature, were investigated to examine their effects on the formation and structures of the resulting products. Results from X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed the monoclinic crystalline structure of CuO NPs with an ultra-small size of less than 3 nm. The size of CuO NPs can be easily adjusted by altering the water content, the molar ratio of precursor to surfactant, and other factors. The as-synthesized CuO NPs exhibited significantly enhanced antibacterial activity against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ).
研究领域:
材料科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Wei-fang Chen,Weipeng Lu,Sijia Zhang,Xiaobing Xie,Fei-fei He,Zai Chen
Starting with sucrose and ferrous chloride, nanoparticles of iron encapsulated in carbon structure were synthesized using a carbothermal method. The effects of carbothermal temperature, treatment time, Fe:sucrose mass ratio on the properties of the nanoscale zero-valent iron supported activated carbon were investigated. Temperatures ranged from 500°C to 1,100°C and treatment time used was 0.5, 1 and 3 h. Mass ratios of Fe and sucrose were 1:2, 1:4 and 1:8, respectively. Materials thus obtained were mostly powdered. X-ray diffraction patterns indicate that zero-valent iron was successfully produced from reduction of iron oxides. Iron was incorporated into the carbon structure. Hexachlorobenzene was employed as the target substance to test the material’s application. The optimum synthesis condition which resulted in a more than 95% HCB removal was carbothermal temperature of 700°C, treatment time of 1 h and mass ratio of Fe:sucrose of 1:4.
研究领域:
环境化学
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材料科学
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环境污染治理
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纳米材料
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环境工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 1
·010512
·
IF 3.1
Manyang Xu,Yanli Zhang,Weiwei Shao,Xiaoning Li,Jiakun Zhou,Wenzhang Zhou,Wenjuan Zhang,Yan Feng,Ding Zhang,Kehua Dai
The performance of sodium-ion batteries critically depends on the cathode materials used, making it essential to explore and optimize suitable candidates. Among them, O3-structured NaNi0.33Fe0.33Mn0.33O2 has emerged as one of the most promising cathode materials due to its outstanding electrochemical properties. However, there still exists a knowledge gap regarding the detailed synthesis conditions and the comprehensive performance of the full cell using this material. In this study, we investigated the influence of synthesis temperature, time, and sodium content on the electrochemical performance and charge-discharge kinetics of O3-structured NaNi0.33Fe0.33Mn0.33O2, prepared via the PVP-gel combustion method. Through systematic analysis, we elucidated the impact of these synthesis parameters on the material’s properties and battery performance. The results revealed that the optimized conditions led to a cathode material with superior electrochemical performance, exhibiting enhanced capacity with 139 mAh g−1 at 0.1 C and 96 mAh g−1 at 10 C. Additionally, a full cell using the optimized cathode material was studied, showing promising performance. This research sheds light on the significance of synthesis parameters in tailoring the electrochemical properties of O3-structured NaNi0.33Fe0.33Mn0.33O2 for sodium-ion batteries. The insights gained from this study hold valuable implications for the further development of practical sodium-ion battery cathode materials.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机功能材料
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）