JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2021
·
IF 2.694
Hongwei Xing,Junshuai Chen,Yongbo Zhang,Libin Chen,Maogang He,Ying Zhang
Transport properties of n-pentane are so scarce that it prevents the further studies of n-pentane as an important component of industrial fluids, especially in the near-critical and supercritical regions. In this work, the thermal diffusivity of n-pentane was measured by the dynamic light scattering method within the temperature limits of (293–573) K along six isobaric lines at p = (0.1, 3.0, 3.5, 5.0, 7.5, and 10.0) MPa. The relative uncertainty of the thermal diffusivity experimental system is estimated to be 2.6% for a coverage factor of k = 2 with a level of confidence of 0.95. The influences of temperature and pressure on thermal diffusivity were presented. Besides, we compared the experimental data with the calculated values from the thermal conductivity model proposed by Vassiliou et al. and the multiparameter equation of state proposed by Span and Wagner. The absolute average of relative deviation and maximum deviation between the experimental data and the calculated results are 1.12 and 3.74%, respectively.
研究领域:
化学工程
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
COMBUSTION AND FLAME
·
2021
·
IF 4.185
Hanyu Chen,Xi Wang,Yingwei Zhang,Yaoqi Hou
In a flow reactor, the pyrolysis process of n-pentane in the 450–750 °C temperature range was investigated at 760 Torr. The pyrolysis products, particularly free radicals and isomers, were identified using synchrotron radiation vacuum ultraviolet photoionization mass spectrometry, and their mole fractions were determined. In this study, the existing n-pentane pyrolysis kinetic model was updated according to the C 5 -mechanism, and the new pyrolysis data were validated. The rate of production and sensitivity analyses were conducted to determine the significant reactions controlling the pyrolysis of fuel and their effects on the reactant concentration and product species profiles. The unimolecular decomposition reaction and free radical attack reaction via H attack dominate n-pentane pyrolysis at atmospheric pressure. Alkenes including 1-pentene, 1-butene, propene and ethylene are produced with higher concentrations than other product species in n-pentane pyrolysis.
研究领域:
化学动力学
·
燃料化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2025
·
IF 4.9
Qingfeng Luo,Yuyi Deng,Qiyuan Yang,Nanxin Zhao,Can Wang,Xingsheng Li
Osteopontin (OPN), highly expressed in foam cells, serves as a hallmark of atherosclerotic plaques and a potential target for site-specific drug delivery. In this study, we developed OPN-targeted liposomes (OPN LIP) co-loaded with curcumin and perfluoro-n-pentane (PFP) to enhance therapeutic efficacy against atherosclerosis. The liposomes exhibited uniform particle size, colloidal stability, favorable biocompatibility, and minimal cytotoxicity. In vitro experiments demonstrated efficient and time-dependent cellular uptake by ox-LDL–stimulated RAW264.7 foam cells. Upon exposure to low-intensity focused ultrasound (LIFU), the nanocarriers underwent acoustic cavitation-induced rupture, leading to rapid curcumin release and significant induction of apoptosis. OPN LIP treatment notably reduced IL-1α and TNF-α levels and aggravated apoptosis in foam cells. Transcriptomic analysis revealed modulation of inflammatory and apoptotic pathways, including TLR, NF-κB, and Mapk3 signaling. These findings highlight the potential of OPN LIP as an ultrasound-responsive, targeted nanoplatform capable of suppressing inflammation and foam cell viability, providing a promising approach for the treatment of atherosclerosis through combined physical and pharmacological strategies.
研究领域:
纳米医学
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心血管疾病
·
药物递送
·
超声治疗
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炎症生物学
·
细胞凋亡研究
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2024
·
IF 7.5
Yu Chen,Zhuojia Shi,Xueqing Zhang,Chenyang Wang,Yanlong Wang,Zihang Niu,Yuqing Zhang,Minghui Feng
Graphical We for the first time use green deep eutectic solvents to recover solid electrolytes from all-solid-state lithium-ion batteries with high efficiency and high Li/La selectivity at mild temperature. Furthermore, we screen 70 kinds of anti-solvents for the precipitation of extracted metal from leachate and find that 12 kind of anti-solvents could successfully precipitate at room temperature with high efficiency. All-solid-state lithium-ion batteries (ASSLIBs) are attracting significant attention due to their high energy density, conductivity and safety. However, they are expected to generate substantial waste in the near future, leading to resource depletion and environmental pollution. Therefore, it is crucial to achieve green, mild and safe recovery of ASSLIBs. Here, we for the first time to use green deep eutectic solvents (DESs) to effectively recover solid-state electrolytes (SSEs) from ASSLIBs at mild temperature. Results show that Li leaching efficiency can reach up to 87.5 % with a superhigh Li/La selectivity of 1902 at a low temperature of 80 °C. Furthermore, 70 anti-solvents are screened to recycle the dissolved SSEs from leachate and 12 anti-solvents could precipitate SSEs from leachate at room temperature. This research opens new possibilities for recovering SSEs from ASSLIBs using the sustainable, cost-effective and safe solvents.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yu Chen,Yaxue Shen,Zhuojia Shi,Ziyang Zhang,Qing Zhang,Yanlong Wang,Minghui Feng,Chenyang Wang
All-solid-state sodium-ion batteries (ASIBs) have wide application prospects in the fields of renewable energy and electric vehicles due to their high energy density and long-life cycle. With the rapid development of industrialization, the number of ASIBs will increase, which might result in a significant increase in the price of metal in ASIBs in the near future. Many waste ASIBs would be produced and lead to waste of resources, environmental pollution and health hazards. Therefore, it is of vital important significance to provide a green and efficient method to recover waste ASIBs. Here, we for the first time propose a mild, green and low-cost strategy for recovery of cathode materials and all-solid-state electrolyte from spent ASIBs by using deep eutectic solvents (DESs). Results show that the highest leaching efficiency of Na in ASIBs cathode materials and all-solid-state electrolytes by using DESs is 88.3% and 56.9%, respectively. Moreover, we use a simple anti-solvent approach of recovering the metals in the leachate with low cost at room temperature. This work would provide a mild, green and low-cost strategy from recycling metals in cathode materials and all-solid-state electrolyte from waste ASIBs.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Chemistry and Pharmacy
·
2024
·
IF 5.5
Jiao Xie,Huiqun Wang,Tingyuan Ren,Qijian Zheng,Mengxue Chen
Due to the low purity of natural ellagic acid, its clinical application has been less reported. Currently, blueberry pomace is discarded as processing waste. However, it is rich in ellagic acid and a good raw material for producing high-purity ellagic acid. Therefore, this study aimed to investigate an optimal horizontal combination scheme for producing of high-purity ellagic acid by antisolvent precipitation using crude ellagic acid extracted from blueberry pomace. Solvent screening results indicated that n-methylpyrrolidone had the highest ellagic acid solubility. Single-factor analysis showed that the oscillation speed, reaction time, crystallization temperature and antisolvent-to-solvent ratio had significantly affected ellagic acid purity, but solid-liquid ratio had little effect. A Box-Behnken-Centre combined design was used to determine the optimal combined scheme. The results showed that at a solvent concentration of 20 mg/mL, the optimal parameters were crystallization temperature 21.1 °C, reaction time 11.2 min, volume ratio of 15.6:1 antisolvent to solvent and oscillation speed of 144 r/min. Under these conditions, ellagic acid purity was 96.63%, relative standard deviation (RSD) was 1.20%, and recovery rate was 69.60%. Fourier transform infrared analysis showed that the spectral peak of purified ellagic acid matched that of the standard. In summary, the antisolvent precipitation method greatly improved the purity of ellagic acid extracted from blueberry pomace, which is not only conducive to the resource recycling, but also provides a theoretical basis for the production of high-purity ellagic acid and the possibility of expanding the application scope of ellagic acid in pharmaceuticals and nutraceuticals.
研究领域:
化学工程
·
药学
·
食品科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhecun Wang,Jinghan Zhang,Yubing Shao,Zhanyuan Cui,Yali Zhao,Yan Zhang
The Janus membranes with asymmetric wettability can gate oil or water transport spontaneously and directionally to facilitate the liquids transport for oil/water emulsions separation without extra energy consumption, which have attracted wide attention. However, this single-functioned either oil or water removal Janus membranes can only separate one type of emulsions and cannot meet the requirements in complex environments. Herein, a bi-functional Janus mesh membrane with selective directional oil- and water-transport integration induced by direction-directed dual asymmetric wettability is demonstrated for energetic-efficient on-demand separation of oil-in-water and water-in-oil emulsion. An ingenious double single-side asymmetric modification strategy is proposed to make a homogenous mesh membrane with special Janus interface, where one surface features oleophobicity and hydrophilicity while the other shows superhydrophobicity and oleophilicity. This direction-directed wettability imbalance gives rise to the selective directional both water and oil transport property, namely , one surface directionally transports oil and block water. In contrast, the other surface suspends the oil and directionally transports water across the membrane. According to this property, this multifunctional Janus mesh membrane achieves high-performance on-demand oil-in-water and water-in-oil emulsions separation without extra energy consumption.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Qianchun Zhang,Yuxian Zhao,Zhaoru Ban,Li Jiang,Shan Tang
Cataluminescence (CTL) sensors are among the most simple, inexpensive, sensitive, and selective tools for gas sensing. This study presented a highly efficient and selective CTL sensor system based on mesoporous SiO2 nanomicrospheres for the quick and sensitive analysis of isobutyraldehyde. Furthermore, its response intensity was 12.7 times higher than that of a nonmesoporous SiO2-based sensor. The constructed CTL sensor exhibited a good linear range (R2 = 0.997) for detecting isobutyraldehyde, spanning 3.11–311 ppm, with a low detection limit of 1.1 ppm. This enabled successful analysis of trace isobutyraldehyde in real samples. Finally, the CTL mechanism of this sensor was further explored. This study presents an approach for the quality detection of an important volatile organic compound, isobutyraldehyde, by a mesoporous-based CTL sensor.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
MEASUREMENT SCIENCE and TECHNOLOGY
·
2025
·Vol. 36
·期 3
·035110
·
IF 3.4
Qianchun Zhang,Chengcheng Wan,Jiumei He,Zhaoru Ban,Shan Tang,Li Jiang,Yanju Chen,Xixi Long
In this study, mesoporous MgO nanoparticles were successfully synthesized using carbon quantum dots as templates and an outstanding cataluminescence sensor system was established based on these nanoparticles. In a particular situation, the constructed sensor demonstrated remarkable linear range was 0.3106–310.6 ppm (R2 = 0.9990) with a low limit of detection of 0.0994 ppm and a signal-to-noise ratio (S/N) of 3. The mesoporous MgO nanoparticle sensor was utilized to analyze the isobutyraldehyde content in real samples. Outstanding recoveries were achieved within range of 83.4%–111%, with the relative standard deviations (n = 7) ranging from 2.0% to 8.2%. Moreover, the 35 d test results showed that the sensor has good stability. Density functional theory and gas chromatography-mass spectrometry were used to research the mechanism of the designed cataluminescence sensor. This work presents a universal methodology for constructing isobutyraldehyde gas sensors with high sensitivity and selectivity, and mesoporous MgO nanoparticles sensors that expand the applications available in the industry and environment analysis.
研究领域:
材料科学
·
环境分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Haorong Li,Yang Pan,Bo Liang,Dahu Yao,Xiping Gao,Jing Chen,Chang Lu,Xinchang Pang
Waste carbon nanotubes (CNTs) have always been a potential threat to the environment and biological health. However, the efficient recycling and utilization of CNTs has received little attention. Here, we used chemically cross-linked polyacrylamide (PAM) particles to adsorb waste CNTs in water to prepare PAM@CNT core-shell particles, which were blended with thermoplastic styrene-butadiene rubber (SBS) to prepare flexible composites. The concentration of residual CNTs in the supernatant was less than 3.5 μg mL −1 , which meets the safety standards for discharge. The unique core-shell structure enables the composites with a thickness of 1 mm to exhibit high electromagnetic interference shielding effectiveness (53.3 dB) and low reflectivity (1.4 dB) at 30 wt% CNT content. In addition, at a CNT content of 10 wt%, the composites exhibit superior sensing properties concerning strain and solvents. Moreover, the composites prepared from different sources of waste CNTs have the same sensing properties. This work provides an effective strategy for the highly efficient recycling of waste CNTs for the preparation of green, high-performance multifunctional polymer composites for EMI shielding , human motion and solvent leakage monitoring, and solvent category differentiation.
研究领域:
材料科学
·
环境科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Li-Zhi Huang,Xiang Zhan,Weiguo Chen,Changye Li,Liandong Zhu,Yitao Dai,Jia Deng
Carbon tetrachloride (CT), a common persistent pollutant in groundwater, has attracted widespread attention from environmental researchers. The dechlorination from CT to combustible hydrocarbons not only represents the removal of contaminants, but also offers the possibility of recovering carbon resources from water. In this work, we used the coprecipitation of Fe(II) and Pd(II) to synthesize Pd-Fe hydroxides for the dechlorination of CT. When Pd and Fe dosages were 0.4 and 5 mM respectively, CT with 26 µM concentration can be fast removed within 5 min, and 43.3 % of CH 4 and 11.6 % of C 2 H 6 (mol%) were generated after 110 min. The alkaline condition was more conducive to the complete dechlorination of CT comparing with acidic and neutral conditions. During the olation process, Fe(II) as electron donor transferred electrons to Pd(II) to form Pd(0) clusters. Pd(0) active sites act on the binding of CT and transfer electron to H + /H 2 O to form adsorbed atomic hydrogen (H ads •). The adsorbed CT molecules on the surface of Pd-Fe hydroxides undergo continuous dechlorination to form CH 4 and C 2 H 6 through the attack of H ads • and direct electron transfer. In real groundwater applications, CT was rapidly removed, with CH 4 and C 2 H 6 yields reaching 24.5 % and 4.6 % (mol%), respectively. Encouragingly, incomplete dechlorinated products, including chloroform and dichloromethane, did not show signs of subsequent rebound even after 60 min. Furthermore, Pd-Fe hydroxides also exhibit resistance to the oxidation effects of dissolved oxygen, which demonstrates the promising application prospects.
研究领域:
环境科学
·
化学工程
·
水处理
·
催化
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS
·
2024
·
IF 4.4
Xinyi Zhang,Yuelian Zhang,Huishan Zheng,Xue Yang,Shiqi Zou,Jianmin Chen
Transdermal drug delivery systems hold promise, but their effectiveness is often constrained by the skin’s barrier. Microneedles (MNs) improve drug permeability by creating micro-channels in the skin, yet they continue to face challenges such as infection risks and safety concerns. To overcome these challenges, a novel antimicrobial sponge MNs (ASMNs@PVP-INS) modified with polyvinylpyrrolidone (PVP) for insulin (INS) delivery was designed. Mechanical testing demonstrated that these MNs possess excellent mechanical strength, capable of withstanding at least 0.11 N per needle without rupture. In vitro drug penetration tests revealed that the MNs consistently released over 75 % of INS within a 6 h. In an animal model, ASMNs@PVP-INS reduced initial blood glucose levels from 22.4 to 5.72 mmol/L, effectively maintaining glucose control for more than 6 h without inducing hypoglycemia. Additionally, agar diffusion assays indicated that INS loading did not compromise the antimicrobial properties of antimicrobial sponge MNs (ASMNs). Skin irritation tests showed that ASMNs@PVP-INS exhibited mild irritation (PII < 0.6), with skin damage fully recovering within 8 h. Safety assessments indicated no significant toxicity to mice, with biochemical markers remaining within normal ranges, thereby confirming their good biocompatibility. In conclusion, ASMNs@PVP-INS hold promise as a novel drug delivery vehicle.
研究领域:
药剂学
·
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）