JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Fan-fan Shen,Tong-wei Zhang,Yong-xiang Li
Information regarding relevant solid–liquid balance pertaining to 3-nitro-1 H -pyrazole (3-NP) within a range of solvents is of a high significance to the preliminary analysis of industry-related uses. Here, through the gravimetric approach, 3-NP dissolvability in various clean solvents, i.e., n -butyl acetate (NBAC), isopropyl acetate (IPAC), n -propyl acetate (NPAC), ethyl acetate (EAC), methyl acetate (MAC), n -propanol (Pro-OH), ethanol (EtOH), methanol (MeOH), toluene (PhMe), acetonitrile (AN), tetrahydrofuran (THF), acetone (DMK), water and benzene (Ph), was explored under an atmosphere pressure of 0.1 MPa and within a range of temperature ( T = 283.15 K to 323.15 K). In accordance with the outcomes, with the rise of the temperature, 3-NP dissolvability increased in fourteen solvents taken. Among all the solvents, water exhibiting the maximum polarity had the minimum dissolvability, while methanol exhibited the maximum quality of solubility. At a particular temperature, 3-NP’s quality of solubility followed that of MeOH (8.54 × 10 -2 , 323.15 K) > EtOH (6.46 × 10 -2 , 323.15 K) > Pro-OH (6.27 × 10 -2 , 323.15 K) > AN (4.18 × 10 -2 , 323.15 K) > DMK (3.76 × 10 -2 , 323.15 K) > MAC (3.20 × 10 -2 , 323.15 K) > EAC (2.82 × 10 -2 , 323.15 K) > NPAC (2.25 × 10 -2 , 323.15 K) > NBAC (1.91 × 10 -2 , 323.15 K) > IPAC (1.25 × 10 -2 , 323.15 K) > THF (1.07 × 10 -2 , 323.15 K) > PhMe (7.29 × 10 -3 , 323.15 K) > Ph (3.23 × 10 -3 , 323.15 K) > water (2.16 × 10 -3 , 323.15 K). The experimental data of 3-NP had a correlation according to Wilson approach, NRTL model, λh equation and the modified Apelblat equation. As was revealed from the fitting outcomes, the optimal correlative result of the experimental information was given through NRTL model. The relative average deviation (10 2 ARD) and the root-mean-square deviation (10 4 RMSD) achieved were lower than 9.44 and 23.75 separately. Moreover, 3-NP dissolvability characteristics in solvents studied were analyzed with the use of the Hansen dissolvability coefficient ( δ d , δ p , δ h , δ t , and Δ δ t ) here. This study determined the effect exerted by interacting processes pertaining to solvent–solute and solvent–solvent molecules upon the 3-NP’s quality of solubility with the association of linear solving energy in accordance with the descriptors of the solvents. Moreover, the mixing characteristics of 3-NP in 14 pure solvents, including the mixing Gibbs energy ( Δ mix G ), mixing enthalpy ( Δ mix H ) and mixing entropy ( Δ mix S ), were determined and analyzed through Wilson approach. The result of Δ mix G < 0 indicated that the dissolution pertaining to 3-NP in the solvents taken was spontaneous. The data pertaining to lnγ 1 ∞ and lnγ 1 was similar, demonstrating that 3-NP in the solution mechanisms of solvents taken was not highly non-ideal. The results presented conducive data in terms of actual 3-NP crystallization optimizing procedure.
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CHEMPHYSCHEM
·
2012
·Vol. 13
·期 18
·4142-4147
·
IF 3.412
Xinmei Zhao,Narayan S. Hosmane,Aiguo Wu
Graphical Link up: ortho -Phenylenediamine (PDA) acts as a linker in the deposition of gold nanoparticles on the surfaces of Fe 3 O 4 microspheres. After coating with PDA, the morphology of the microspheres changes significantly to nanoparticle clusters, and this is ideal for the deposition of the gold nanoparticles. The resulting Fe 3 O 4 /Au nanocomposites exhibit enhanced magnetism so that they can be recovered and recycled easily. 1,2-Diaminobenzene, popularly known as ortho -phenylenediamine (PDA), is found to be a prototype spacer for the deposition of gold nanoparticles on the surfaces of Fe 3 O 4 microspheres. Upon carbonization with PDA, the morphology of the product changes significantly, and the resulting nanocomposites exhibit enhanced magnetism beyond the saturation value of Fe 3 O 4 . The Fe 3 O 4 /Au nanocomposites show good surface-enhanced Raman spectroscopy activity with a detection limit of 10 −15 M .
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Chenguang Guo,Xingyu Li,Lin Zhang,Yuan Shi,Peng Zhang,Zichen Wei,En Mei,Zhongyou Que,Mingli Qin,Xuanhui Qu
Ultrafine-grained (UFG) VNbMoTaW refractory high entropy alloy (RHEA), reinforced with carbide particles, was prepared through a novel powder metallurgy route. Initially, pre-alloyed RHEA powder, characterized by body-centered cubic (BCC) phase, ∼88 nm particle size and good dispersity, was fabricated via a wet-chemical (WC) method. The high quality of the nano powder enabled low-temperature sintering with suppressed grain growth. Subsequently, a dense UFG VNbMoTaW RHEA bulk sample was fabricated by spark plasma sintering (SPS). It provided uniform microstructure with 99 % theoretical density and ∼320 nm grain size. The residual carbon from powder facilitated the precipitation of carbide phases in the sintering process. These carbide precipitates were identified by a high-entropy characteristic, ∼180 nm particle size and a volume fraction of 8.3 %, serving as effective reinforcing agents for the RHEA matrix. Benefiting from the high configurational entropy, ultrafine grain size, and precipitate phase, the bulk RHEA exhibited excellent mechanical properties in terms of a high hardness of 10.9 GPa and a compressive strength of 4.2 GPa with an acceptable strain of 10.7 %. We expect such a powder metallurgy route should also be applicable to other systems of RHEAs.
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LANGMUIR
·
2025
·
IF 3.9
Yi Sun,Wenlong Sun,KangKang Zhang,Siyu Cui,Xiong Shao,Jian Qiu,Yushan Yang,Jun Li
In order to improve the specimens’ flame-retardant qualities, ethyl orthosilicate was impregnated into them using a combination of the delignification process and the in situ growing approach. Lignification has been demonstrated to increase the cellular gap of the specimen and to maximize the impregnation of ethyl orthosilicate. Moreover, the in situ growth method results in the combination of specimens containing silica manufactured from ethyl orthosilicate, thereby forming a composite material with enhanced flame-retardant properties. The examination of the changes in the properties of the specimens before and after modification was conducted using FTIR spectroscopy, XRD, XPS, SEM, and other experimental techniques. The modified specimens exhibited higher properties in comparison to the untreated specimens. Furthermore, the modified specimens exhibited enhanced mechanical properties, characterized by an augmented compressive strength of 34.9 MPa and a strength-to-weight ratio of 158 MPa·cm·g–1, in comparison to specimens that did not undergo the modification process. The results of experiments show that proposed green technology provides a new method for producing flame-retardant composites and could significantly improve the mechanical and flame-retardant qualities of wood.
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Nanomaterials
·
2025
·Vol. 15
·期 8
·621
·
IF 4.3
Ruojiao Su,Miaomiao Wang,Yuwei Jiang,Shuang Zhang,Junjun Tan
Amorphous calcium phosphate (ACP), one of the most important calcium–phosphorus compounds, is widely used in dentistry, orthopedics, and medicine, but is rarely reported for fluoride removal from water. In view of this, sodium citrate-stabilized amorphous calcium phosphate (Cit-ACP) and Cit-ACP calcinated at different temperatures were successfully prepared for fluoride removal. The results showed that the adsorption data of the Cit-ACP sample could be well described by the Langmuir model, and the adsorption kinetic followed the pseudo-second-order model. The maximum adsorption capacity was 27.48 mg/g at pH 7.0 when the fluoride concentration is 100 mg/L. The thermodynamic parameters suggested that the adsorption of fluoride was a spontaneous endothermic process. The XRD, XPS, and Zeta potential analysis of the Cit-ACP sample before and after fluoride removal revealed that, owing to the core–shell structure of the Cit-ACP nanoparticles, the fluoride ions in solution and the calcium ions in shell layer of the Cit-ACP nanoparticles co-promoted the transformation of the core of the Cit-ACP nanoparticles into fluorapatite. Given the simplicity of its preparation and effectiveness of its fluoride removal properties, Cit-ACP would be a potentially economical, efficient, and biocompatible adsorbent for fluoride removal.
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ACS Applied Materials & Interfaces
·
2015
·
IF 6.723
Kai Li,Qianqian Su,Wei Yuan,Bo Tian,Bin Shen,Yuhao Li,Wei Feng,Fuyou Li
Nanoscale drug delivery systems have been widely investigated due to their well-recognized advantages including controlled delivery of chemotherapeutic agents, enhanced therapeutic effectiveness, and reduced adverse effects compared to conventional chemotherapy with small molecules. However, further progress in the use of nanoscale delivery systems in clinical applications has been hampered by pharmacokinetic studies in biological samples which were associated with significant experimental challenges. Here, we report a rational ratiometric approach to monitor drug release kinetics by quantitatively investigating luminescence resonance energy transfer (LRET) from upconversion nanoparticles to the antitumor drug doxorubicin (DOX). Specifically, DOX molecules within the shell of mesoporous silica-coated upconversion nanoparticles selectively quenched the green emission of upconversion nanoparticles, while the intensity of red emission was essentially unaltered. Consequently, when DOX was gradually released, a steady recovery of green emission was observed. The ability to monitor the intensity ratio of green-to-red luminescence enabled a rational design for real-time investigation of drug delivery release kinetics. Importantly, the internal standard effect of red emission made this ratiometric approach suitable for complex biological microenvironments.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiaxin Yang,Wenju Tao,Jiaming Li,Jingui He,Zhaowen Wang
Low-cost and efficient recycling methods are crucial for recovering strategic elements from lithium-containing waste electrolytes (LiWE), which are essential for energy storage and environmental protection. This study aims to develop a method for recovering lithium from LiWE through one-step calcination of CaCl 2 . Compared with the traditional high-temperature acidification roasting process, this low-temperature calcification only involves one-step roasting and low-temperature pure water leaching, which avoids the introduction of hazardous reagents such as acid/alkali. The thermodynamic analysis results indicate that the transition temperature of LiF during the calcification roasting process is higher than that of Na 3 AlF 6 . 550 ℃, 2.5 (Ca/Li ratio) and 1.0 h have been proven to be the most suitable roasting conditions. Meanwhile, 75 ℃, 7 mL/g (L/S) and 1.0 h are expected to be the most preferred leaching processes. The recovery rate of lithium exceeds 98 % and maintains a high purity (>99.0 %) of Li 2 CO 3 . The economic benefits of this process have been comprehensively evaluated, with a profit of 2.65 $/kg. Finally, the regenerated LCO prepared from recycled Li 2 CO 3 has been proven to have good electrochemical performance compared to commercial LCO with a capacity exceeding 151 mAh g-1 at 1C, demonstrating the feasibility of energy storage applications. In summary, the low-temperature calcification roasting method has been proven feasible for extracting lithium from LiWE.
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ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 31
·期 5
·2008515
·
IF 16.836
Lili Sun,Yifan Ma,Haoyi Niu,Yutong Liu,Yuan Yuan,Changsheng Liu
Due to the limited ability for perfusion, traditional intramembranous ossification (IMO) often fails to recapitulate the natural regeneration process of most long bones and craniofacial bones. Alternatively, endochondral ossification (ECO) strategy has emerged and has been evidenced to circumvent the drawbacks in the routine application of IMO. Here, an injectable, poly(glycerol sebacate)- co -poly (ethylene glycol)/polyacrylic acid (PEGS/PAA) hydrogels are successfully developed to induce a hypoxia-mimicking environment and subsequently recapitulate ECO via in situ iron chelation. With the incorporation of PAA, these hydrogels present remarkable viscoelasticity and high efficacy of iron ion-chelating after injection, giving rise to the activation of HIF-1α signaling pathway and suppression of inflammatory responses, and thereby improving chondrogenic differentiation in the early stage and facilitating vascularization in the later stage, which consequently trigger typical ECO. More importantly, through sustained and stable expression of HIF-1α regulated by PEGS/PAA hydrogels throughout the regeneration, a harmonious chondrogenic/osteogenic balance can be struck and thereby accelerating the progress of ECO compared to the PEGS. The findings provide an efficient strategy to achieve in situ ECO via biomaterial-based iron ion-chelating and ensuing hypoxia-mimicking, representing a novel and promising concept for future application in bone regeneration.
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ENERGY & FUELS
·
2025
·
IF 5.3
Yuanjian Chen,Zhengli Zhang,Ruirui Cui,Yi Wang,Ting Yang,Yong Deng,Shaolu Chen,Junli Li
The appearance of the cathode interlayer (CIL), a transition bridge between the cathode and the organic photoactive layer (OPL), provides a new pathway for the performance improvement of organic solar cells (OSCs). PFN-Br is widely employed in many optoelectronic devices, including nonfullerene OSCs, to transport electrons and improve charge injection at the interface. However, due to the relatively low conductivity of PFN-Br, the thickness of the CIL prepared with PFN-Br is usually less than 10 nm, which evidently contradicts the requirements for large-scale roll-to-roll manufacturing. Herein, a strategy using N-α-carbobenzyloxy-d-Arginine (NA) as the doping material is proposed to improve the performance of PFN-Br. The homogeneous distribution of NA in PFN-Br can modify the work function (WF) of PFN-Br and facilitate an interface dipole arrangement that is favorable for charge transfer, resulting in binary CILs with a tunable WF and increased conductivity. To verify this method, a series of devices were prepared with PBDB-T:IT-M or PM6:Y6 as the OPL and different proportions of NA in the CIL. The use of PFN-Br:NA (0.75:0.06, in weight%) in devices helps to improve the OPL morphology, making it exhibit a trend of fiber network structure, leading to a higher fill factor and short circuit current density. Consequently, the optimal power conversion efficiency (PCE) based on the PBDB-T:IT-M and PM6:Y6 is increased from 10.5% to 11.1% and from 15.4% to 16.0%, respectively. In addition, the NA-doped device exhibits better nitrogen stability after 360 h of dark storage compared to the control. The discovery of these modification approaches provides insight into the hybrid cathode interlayers required for efficient and reliable nonfullerene OSCs.
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Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Xing-Yu Yue,Yuan-Yuan Wang,Shen Yu,Chun-Mu Guo,Zhan Liu,Yi-Long Wang,Zhi-Yi Hu,Yu Li,Li-Hua Chen,Bao-Lian Su
Bio-inspired catalyst materials with diverse functions and excellent performance are highly demanding for efficient catalytic conversion. However, precisely imitating the natural structure to achieve optimized performance is still highly challenging. Inspired by the fast mass diffusion and exchange ability of an alveolus structure, we prepared hierarchically macro-meso-microporous TS-1 zeolite microspheres with precisely designed alveolus-like structure (HAS-TS-1) by developing a method combining of template and emulsion approaches. The alveolus-like zeolite microspheres possessed interconnected macropores (280 nm) and mesopores (40 nm) with a BET surface area of 484 m2/g. This novel bio-inspired structure showed a significantly enhanced adsorption ability of thiophenic molecules, which was four times of that in a microporous TS-1 zeolite. The HAS-TS-1 exhibited excellent catalytic oxidative desulfurization performance of a series of bulky thiophenic molecules, completely removing 4,6-dimethyldibenzothiophene (DMDBT) in 15 min, which was twelve times faster than a TS-1 microsphere (180 min). The superiority of this bio-inspired hierarchically alveolus-like structure in mass transfer and diffusion might stimulate its advanced functions in the field of catalysis, energy, and sensor.
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Membranes
·
2025
·Vol. 15
·期 5
·129
·
IF 3.6
Shichang Xu,Long Zhang,Zhen Zhang,Lixin Xie,Wen Zhang
In this study, the integrated process of reverse osmosis (RO) and electrodialysis (ED) is developed to concentrate the dilute solution of acetic acid (HAc). The key parameters, such as RO pressure, ED voltage, and ED volume ratio, were systematically evaluated and the operation conditions of the processes were optimized. Under an operating pressure of 5 MPa, RO can enrich low-concentration HAc from 1.5 wt.% to 6.5% wt.% and the energy consumption is 0.37 kW·h·kg−1. Next, RO-concentrated water was used as the ED feed and the first ED with a volume ratio of the concentrated to dilute chamber of 1:4 was carried out under the conditions of a flow rate of 30 L/h and an operating voltage of 12 V; the HAc concentration reached 12.50 wt.%. The second ED with a volume ratio of 1:5 made the final HAc concentration reach 19.02 wt.%. This study shows that using RO-concentrated water instead of initial water for the ED process can reduce water energy consumption and cost markedly, and the RO–ED integrated process can efficiently pre-enrich low-concentration HAc aqueous solution, and the enriched HAc concentration meets the requirements for the further distillation of HAc.
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BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Xiansu Liu,Hanwen Ren,Biao Wang,DongDong Zhao,Haolin Xiao,Qunfeng Tang,Hongli Huang,Feijun Zhao,Zhencheng Chen
Ceftriaxone sodium, a widely used third-generation cephalosporin antibiotic, poses significant health risks when residues accumulate in clinical or environmental settings. However, conventional detection techniques, including high-performance liquid chromatography and capillary electrophoresis, are limited by complex procedures, poor sensitivity, and a lack of real-time capability. To address these challenges, we report a sensitivity-enhanced electrochemiluminescence (ECL) microfluidic device for the rapid and label-free detection of ultra-low concentrations of ceftriaxone. Au 25 (Capt) 18 gold nanoclusters were served as a novel ECL luminophore to boost detection sensitivity, while a 3D-printed circulating microfluidic channel was designed to enrich ceftriaxone via inertial centrifugation. The device achieved a wide detection range of 4–400 μg/mL, a low detection limit of 0.522 μg/mL, and an average recovery of 99.1% in real sample tests. This integrated platform offers a promising strategy for simple, sensitive, and on-site monitoring of ceftriaxone contamination.
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