INORGANIC CHEMISTRY
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2022
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IF 5.436
Xinyu Shi,Zhilin Li,Mengyan Cao,Zhihui Rao,Xiujian Zhao,Xiao Gong
Due to the toxicity and instability issues of lead halide perovskites, lead-free perovskites have recently emerged as a viable alternative. However, significant optical band gaps of lead-free perovskites exert influence on their luminescent properties. Fortunately, the addition of dopants becomes an efficacious solution. The current widely utilized methods for synthesizing perovskites almost require high temperatures, a long period, and atmosphere protection, which cost more energy and resources. In this paper, we report that Rb2ZrCl6:xSb3+ perovskite phosphors can be easily prepared by a wet grinding approach at room temperature, which is a more efficient and facile process. Due to the self-trapped excitons of the host structure and Sb3+ ions, the produced samples display blue-white and orange fluorescence under UV lamp irradiation at 254 and 365 nm, respectively. In the photoluminescence spectrum, the doped perovskite exhibits an emission peak at 630 nm under excitation at 365 nm. Importantly, the prepared phosphors have tunable emissions related to the excitation wavelength. In addition, our produced powders show remarkable stability at room temperature, laying the foundations for this approach to be widely used in perovskite production.
研究领域:
材料科学
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光学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
·
2023
·Vol. 154
·期 4
·2112-2123
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IF 2.4
Hou Guang Hao,Falola Akinola A.,Wang Xiao Kang,Liang Li Peng,Zou Xing Wu,Wu Tao,Wang Xue Z.
Acoustic spectroscopy and neural networks (NNs) are applied to on-line real-time measurement of particle size distribution (PSD) during wet milling of pharmaceutical nanocrystals. A method for modeling the relationship between acoustic attenuation spectra and PSD is proposed that is based on NNs and principal component analysis (PCA). PCA reduces the dimensions of both the spectra and the PSD; then, a neural network model of 2 × 2 × 2 (input, hidden, output layer nodes) with only eight connection weights is built. Compared with previous instrument models that could require as many as 14 physical properties, the current approach does not need any prior knowledge of the system's properties. In addition, the time taken to complete a PSD measurement is reduced from minutes to seconds and it always generates a single solution, rather than possible multiple PSD solutions as in early methods. Application to hydrotalcite nanomilling found good agreement between the on-line measurements and off-line analysis.
研究领域:
药剂学
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纳米技术
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生物医学工程
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DOI
PubMed
高影响因子
Journal of Oleo Science
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2024
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IF 1.6
Chen Liu,Fu-sheng Chen
Effects of dry and wet grind on peanut oil and protein yield, oil bodies (OBs) stability, fatty acid composition, protein composition and functional characteristics were systematically analyzed. Results showed that peanut oil and protein yields reached highest at dry grind 90 s (92.56% and 83.05%, respectively), while peanut oil and protein yields were 94.58% and 85.36%, respectively, at wet grind 120 s. Peanut oil and protein yields by wet grind was 2.18% and 2.78% higher than that of dry grind, respectively. Surface protein concentration (Г) and absolute value of zeta potential of OBs extracted by wet grind (WOBs) were 11.53 mg/m 2 and 18.51 mV, respectively, which were higher than OBs extracted by dry grind (DOBs), indicating stability of WOBs was higher than DOBs. Relative contents of oleic acid and linoleic acid in peanut oil, essential and hydrophobic amino acids in protein extracted by wet grind were higher than dry grind. There was little difference in protein composition between wet and dry grind, but thermal denaturation degree of protein obtained by wet grind was lower than dry grind. Solubility, oil retention, emulsion stability, foaming and foam stability of protein obtained by wet grind were better than dry grind. Results from this study provided theoretical basis for grind pretreatment selection of aqueous enzymatic method.
研究领域:
食品科学
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生物化学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Biqi Tang,Jiayi Sun,Jie Xiao,Yong Cao,Qingrong Huang,Chi-Tang Ho,Xingran Kou,Muwen Lu
Piperine (PIP) has been known for its pharmacological activities with low water solubility and poor dissolution, which limits its nutritional application. The purpose of this research was to enhance PIP stability, dispersibility and biological activity by preparing PIP nanoparticles using the wet-media milling approach combined with nanosuspension solidification methods of spray/freeze drying. Octenyl succinic anhydride (OSA)-modified waxy maize starch was applied as the stabilizer to suppress aggregation of PIP nanoparticles. The particle size, redispersibility, storage stability and in vitro release behavior of PIP nanoparticles were measured. The regulating effect on adipocyte differentiation was evaluated using 3T3-L1 cell model. Results showed that PIP nanoparticles had a reduced particle size of 60 ± 1 nm, increased release rate in the simulated gastric (SGF) and intestinal fluids (SIF) and enhanced inhibition effect on adipogenesis in 3T3-L1 cells compared with free PIP, indicating that PIP-loaded nanoparticles with improved stability and anti-adipogenic property were developed successfully by combining wet-media milling and drying methods.
研究领域:
药学
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纳米技术
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生物技术
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
International Journal of Minerals Metallurgy and Materials
·
2025
·Vol. 32
·期 12
·3072-3085
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IF 7.2
Zhang Qian,Liu Bo,An Changcong,Li Qiong,Liu Jiling,Wei Siyu,Fan Jiaxing,Sun Zhe,Zhang Dichuan,Pulatov Bakhtiyor
The effect of heavy metals on the properties and hydration of blast furnace slag–cement composites (BFS-CC) remain unclear. In this study, two BFS-CC (denoted as DBFS-CC and WBFS-CC) were prepared by dry and wet grinding of BFS, respectively. The effect of Cu(II) on BFS-CC’s properties and hydration was investigated by adding representative copper contaminants (CuO, CuCl 2 , and CuS) to the composites. Adding 1.0wt% CuO and 0.5wt% CuS increased the 3-d compressive strength of DBFS-CC by 14.9% and 5.7%, respectively, but suppressed the 3-d strength of WBFS-CC. This trend reversed at 28-d curing, where adding 1.5wt% CuO, 2.0wt% CuCl 2 , and 1.5wt% CuS enhanced the compressive strength of WBFS-CC by 23.4%, 6.2%, and 13.6%, respectively, but adversely affected the strength of DBFS-CC. For 28-d hydration, adding CuCl 2 decreased the hydration degree of DBFS-CC but enhanced that of WBFS-CC. Adding CuO promoted the hydration degree of both composites, while adding CuS exhibited inhibitory effects. DBFS-CC immobilized CuCl 2 better due to a higher hydration degree, while WBFS-CC immobilized CuO and CuS better due to having finer unhydrated BFS particles and a denser matrix. This study not only focuses on the Cu(II) immobilization effect but also reveals the differential effects of Cu(II) species on the hydration process, providing novel insights into heavy metal interactions in BFS-CC systems and their safe disposal.
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高影响因子
ACS ES&T Engineering
·
2022
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IF 0
Lei Li,Qi Xu,Shaolin Li,Wei-xian Zhang
Herein, a critical problem regarding the milling of zerovalent iron (ZVI) to produce fine ZVI particles is solved. During milling, ZVI is prone to be rapidly oxidized by oxygen, water, and other potential oxidants in the milling environment, which results in significant metallic iron (Fe(0)) loss and raises safety concerns. In this work, a sulfide solution (using Na2S) is introduced as the milling solvent; as benchmarks, ZVI milling under a pure aqueous solution (ZVI(W)) and organic solvents (pure ethanol, ZVI(E)) is also investigated. Produced ZVIs are characterized with six different techniques to assess their Fe(0) content, safety, reactivity, and reductive capacity. The obtained results show that the sulfide solution is effective in minimizing Fe(0) oxidation during milling; the Fe(0) content (∼63%, w/w) of ZVI milled in sulfide solution (ZVI(S)) is more than 10 times that of ZVI(W) after 5 h of milling. ZVI(S) is comparable to ZVI(E) in their Fe(0) contents, reductive reactivity, and capacity, but ZVI(S) is more stable and safer in use; an optimal Na2S concentration of 10 g Na2S/L is recommended. A mechanistic study shows that Fe(0) preservation in a sulfide solution results from a combined effect of the alkaline pH of the solution and the coating of iron sulfides on ZVI. This exploratory study demonstrates an original milling solution for a highly scalable, economical, and safe scheme to produce ultrafine and reactive ZVI with a high Fe(0) content for environmental applications.
研究领域:
材料科学
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环境工程
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化学工程
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产品关联
DOI
危险品化学品经营许可证（带存储）