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Search for "precipitation" in Full Text gives 262 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.
Fabrication of nanocrystal forms of ᴅ-cycloserine and their application for transdermal and enteric drug delivery systems
Beilstein J. Nanotechnol. 2024, 15, 465–474, doi:10.3762/bjnano.15.42
- antisolvent, and the mixing conditions. During precipitation, different solvents can affect the size, the structure, and the stability of polymorphous particles. To confirm the morphology of DCS nanocrystals, SEM and XRPD analyses were applied for the examination of particle size and structure, respectively
Potential of a deep eutectic solvent in silver nanoparticle fabrication for antibiotic residue detection
Beilstein J. Nanotechnol. 2024, 15, 426–434, doi:10.3762/bjnano.15.38
- synthesis because of the Cl− anions in choline chloride, which may unintentionally cause AgCl precipitation. Here, we chose an alternative DES [56] without any anions precipitating with Ag+ cations. ᴅ-glucose, urea, and glycerol (molar ratio 1:1:2) were mixed and magnetically stirred at relatively high
Berberine-loaded polylactic acid nanofiber scaffold as a drug delivery system: The relationship between chemical characteristics, drug-release behavior, and antibacterial efficiency
Beilstein J. Nanotechnol. 2024, 15, 71–82, doi:10.3762/bjnano.15.7
- prepared by antisolvent precipitation could reach up to 5.0 mg/mL, which notably increased the antibacterial activity of BBR [7]. Electrospinning is a convenient technique that allows one to fabricate nanofiber scaffolds with various compositions and structures. During the electrospinning process, a
- Berberine nanoparticles were formed through the antisolvent precipitation process described in our previous report [7]. A 7.0 wt % PLA solution was prepared by dissolving the PLA pellets in a solvent mixture of DCM/DMF with a weight ratio of 80/20 under magnetic stirring for 1 h at 50 °C. After that, the
Nanotechnological approaches in the treatment of schistosomiasis: an overview
Beilstein J. Nanotechnol. 2024, 15, 13–25, doi:10.3762/bjnano.15.2
- homogenization); (2) low-energy methods, which requires the precipitation of nanoparticles from homogeneous systems (such as microemulsions); and (3) methods based on organic solvents (emulsification–diffusion method) [35]. Liposomes are vesicles composed of a phospholipid and cholesterol with an aqueous core
Fluorescent bioinspired albumin/polydopamine nanoparticles and their interactions with Escherichia coli cells
Beilstein J. Nanotechnol. 2023, 14, 1208–1224, doi:10.3762/bjnano.14.100
- deteriorated above pH 11 with, first, a decrease in size before the NP morphology changed into nanosheets [28]. However, in the case of BSA/PDA NPs, the NPs size increased when the pH value was above 6.5. In addition, precipitation, sedimentation, or degradation of the dispersion were not observed, showing
Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study
Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93
- poorly water-soluble CUR. An effective submicron particle fabrication technique, namely co-precipitation–cross-linking–dissolution (CCD), has been established to produce biopolymer particles [24][25][26]. In this method, biopolymer particles are produced via co-precipitation, by simply mixing MnCl2 and
- particles are easily synthesized via cost-effective co-precipitation methods. These techniques are simple, low-cost, and easily scalable, enabling precise control over particle characteristics, including size and morphology, and use inexpensive materials without generating toxic waste. Having established an
- (CUR-HSA-MPs) is shown in Figure 1. At first, MnCO3-HSA-MPs were obtained by co-precipitation for the entrapment of HSA. The entrapment efficiency (%EE) of HSA was between 55% and 62% (i.e., the absolute amounts of entrapped HSA in HSA-MPs were up to 31.3 ± 1.8 mg). CUR was then adsorbed onto the MnCO3
Sulfur nanocomposites with insecticidal effect for the control of Bactericera cockerelli
Beilstein J. Nanotechnol. 2023, 14, 1106–1115, doi:10.3762/bjnano.14.91
- as size, distribution, and the nature of the particles [37]. Furthermore, the observed diameters align with other research in which sizes in the range of 10–80 nm were obtained using the same method for SNP synthesis, that is, chemical precipitation from sodium thiosulfate as a sulfur source [31][32
Experimental investigation of usage of POE lubricants with Al2O3, graphene or CNT nanoparticles in a refrigeration compressor
Beilstein J. Nanotechnol. 2023, 14, 1041–1058, doi:10.3762/bjnano.14.86
- to add nanoparticles to the lubricant. Elimination of precipitation and agglomeration problems of nanoparticles is crucial for nanolubricant applications. On this critical issue in the nanolubricant preparation process, the authors benefited from their previous study [21], which included the basic
Upscaling the urea method synthesis of CoAl layered double hydroxides
Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76
- alkalinization rates and, concomitantly, the precipitation, even under recrystallization at high temperatures. In contrast, for the tenfold mass scale-up, similar morphological features were observed and assigned to changes in nucleation and growth. However, at higher concentrations, simonkolleite-like Co-based
- layered hydroxide impurities are formed, indicating a phase competition during the precipitation related to the thermodynamic stability of the growing phases. Overall, this work demonstrates that it is possible to upscale the synthesis of high-quality hexagonal CoAl-LDH in a reproducible manner. It
- storage and conversion [19][20][21], quantum materials [22][23], and others [24]. This wide range of potential applications makes the development of reliable scaling processes crucial. Usually, LDHs are obtained by different synthesis procedures such as co-precipitation [25], hydrothermal synthesis [13
Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies
Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66
- high-negative ζ values may impede cellular uptake [40]. On the other hand, it was observed that the nanoparticulated systems remained stable after six months with no precipitation. This suggests that in this case the stabilization is not achieved by means of surface charge alone, but also by the steric
Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability
Beilstein J. Nanotechnol. 2023, 14, 467–477, doi:10.3762/bjnano.14.37
- solution containing the Al3+ ions had an acid pH value of 0.45 [1]. Obtaining boehmite (γ-AlO(OH)) The pH value was modified to obtain the boehmite phase by adding sodium hydroxide (NaOH) until pH 8. After precipitation, the oxide hydroxide was vacuum filtered and oven-dried at 70 °C [1][13]. Boehmite
Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes
Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26
- treat contaminated water and wastewater, including adsorption, bioremediation, precipitation, electrocoagulation, filtration, membrane separation, flocculation, centrifugation, advanced oxidation processes based on photocatalysis, and chemical coagulation [4][5][6][7][8][9][10][11]. Each of these
- precipitation, in particular, are believed to be ineffective [4][11]. As a result of the non-biodegradable and persistent nature of the majority of organic contaminants, some physicochemical treatment techniques, such as adsorption, are ineffective in removing them from water resources [11]. Because of their
- -precipitation, and aerosol-spraying) have been widely used for the synthesis of various nanostructured materials due to their low cost, low energy requirements, and ease of control of the solution parameters to meet the growing demand for efficient photocatalysts that can be produced on a large industrial scale
Biocatalytic synthesis and ordered self-assembly of silica nanoparticles via a silica-binding peptide
Beilstein J. Nanotechnol. 2023, 14, 280–290, doi:10.3762/bjnano.14.25
- silica precipitation in vitro [29][30][31][32]. The catalytic activity of these proteins is thought to be similar to the serine–histidine–aspartic acid (SHD) catalytic triad [33][34]. In this model, a hydrogen bond between serine and histidine increases the nucleophilicity of serine. Aspartic acid
Two-step single-reactor synthesis of oleic acid- or undecylenic acid-stabilized magnetic nanoparticles by thermal decomposition
Beilstein J. Nanotechnol. 2023, 14, 11–22, doi:10.3762/bjnano.14.2
- makes them ideal candidates for magnetic-assisted targeted drug delivery [12]. Nanoscale magnetite can be obtained through well-known synthesis routes, such as hydrothermal synthesis, thermal decomposition, or co-precipitation [10][11]. Each of these synthetic approaches has certain advantages and
Hydroxyapatite–bioglass nanocomposites: Structural, mechanical, and biological aspects
Beilstein J. Nanotechnol. 2022, 13, 1490–1504, doi:10.3762/bjnano.13.123
- one hand, it induces antibacterial activity, and, on the other hand, it promotes the formation and mineralization of bone tissue [19][32]. The HA-BG composites investigated in this work contained two types of HA, obtained either by the sol–gel method (HAG) or by the precipitation method (HAP). It was
- composites The composite samples were obtained from hydroxyapatite prepared by a precipitation method (HAP) or by a sol–gel method (HAG) combined with a bioglass of definite composition. For the preparation of HAP powder we used the method described in a previous work [35] with small modifications, according
- the incipient stage of calcium phosphate precipitation after 3 days of soaking (Figure 7a). In contrast, HAP-based composites did not exhibit any precipitate at the surface after 3 days of soaking (Figure 7b). This can be the result of the more porous structure of HAG-based composites (Figure 4a) and
Structural studies and selected physical investigations of LiCoO2 obtained by combustion synthesis
Beilstein J. Nanotechnol. 2022, 13, 1473–1482, doi:10.3762/bjnano.13.121
- produced in the form of powders, fibers, and films by using various processing techniques including wet chemical synthesis, such as the sol–gel method [33][34][35], precipitation [36], hydrothermal [37][38][39] and spray pyrolysis [40][41]. Also, solid-state synthesis methods, such as mechanical synthesis
Facile preparation of Au- and BODIPY-grafted lipid nanoparticles for synergized photothermal therapy
Beilstein J. Nanotechnol. 2022, 13, 1432–1444, doi:10.3762/bjnano.13.118
- (molar ratio of DSPE-DTPA/Au3+/BDP = 2:1:1), the mixture was vortexed for 30 s and further ultrasonicated for 10 min at 25 °C. The acquired green dispersion, designated as AB-LNPs, showed excellent stability with no precipitation after centrifugation. Method B is mixing BDP with preformed LNPs followed
Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications
Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109
- . The sample calcinated at 750 °C revealed the highest photocatalytic performance. Hamza et al. fabricated Bi2(CrO4)3 nanoparticles via a facile precipitation technique [59]. The photocatalytic activity of the Bi2(CrO4)3 nanoparticles was studied under UV, AM 1.5, and visible-light irradiation, and
- plasmonic photocatalyst. Nanospheres, nanorods, and nanosheets can be synthesized using various techniques. Hydrothermal calcination, template synthesis, precipitation, reverse micro-emulsion, sonochemical procedures, and microwave methods are typical techniques for fabricating Bi-based nanostructures [77
Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration
Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92
- , osteoblasts generate a membrane that includes alkaline phosphatase, which cleaves phosphatase groups and causes calcium and phosphate precipitation, resulting in the formation of natural bone minerals with a ratio of 1.67 [27]. Osteoblasts have been predominantly derived from mesenchymal stem cells, which
Solar-light-driven LaFexNi1−xO3 perovskite oxides for photocatalytic Fenton-like reaction to degrade organic pollutants
Beilstein J. Nanotechnol. 2022, 13, 882–895, doi:10.3762/bjnano.13.79
- )3 precipitation, which is called iron sludge. It might decrease the activity and lead to the termination of the Fenton reaction. Second, ferric ions might easily cause complicated chain reactions with organic matters, resulting in the formation of Fe3+ complexes or other intermediate products. Such
Hierachical epicuticular wax coverage on leaves of Deschampsia antarctica as a possible adaptation to severe environmental conditions
Beilstein J. Nanotechnol. 2022, 13, 807–816, doi:10.3762/bjnano.13.71
- important abiotic factors affecting the vegetation in Antarctica, is provided mainly by atmospheric water vapor and local melt supplies from fallen snow, drift snow, and permafrost, whereas stream runoff is extremely rare [28]. Precipitation in the Maritime Antarctica ranges from 100 mm per year (Margarita
Gelatin nanoparticles with tunable mechanical properties: effect of crosslinking time and loading
Beilstein J. Nanotechnol. 2022, 13, 778–787, doi:10.3762/bjnano.13.68
- primary amine functions, and, therefore, it cannot be crosslinked into the particle matrix by glutaraldehyde. FITC-dextran 70 kDa was loaded into nanoparticles by incorporation during precipitation and subsequent crosslinking of the nanoparticles. The fluorescence intensity was measured after enzymatic
Antibacterial activity of a berberine nanoformulation
Beilstein J. Nanotechnol. 2022, 13, 641–652, doi:10.3762/bjnano.13.56
- the preparation of berberine (BBR) in nanoformulation to enhance its solubility and increase its antibacterial effectiveness against hospital-acquired infections. BBR nanoparticles (BBR NPs) were formed by antisolvent precipitation (ASP) using glycerol as a safe organic solvent. UV–vis absorption
- bacterial cells and severely damaged the cell walls. Therefore, BBR NPs prepared by ASP appear to be a potential candidate for the treatment of bacterial pathogens. Keywords: antibacterial activity; antisolvent precipitation (ASP); berberine nanoparticles (BBR NPs); glycerol; solubility; Introduction
- ], particle size reduction [25], and encapsulation in nanoscale delivery systems [11]. Nanoscale BBR crystals can be formed using top-down technologies (ball mills, high-pressure homogenizers, microfluidic technology, and spray drying) or bottom-up technologies (evaporative precipitation of nanosuspension
A new method for obtaining the magnetic shape anisotropy directly from electron tomography images
Beilstein J. Nanotechnol. 2022, 13, 590–598, doi:10.3762/bjnano.13.51
- analysis, 28–30 wt % solution of NH3 in water, Acros Organics). The preparation of the MNPs was performed by reverse precipitation, in which an aqueous solution (50 mL) of FeSO4 with the surfactant CTAB (2:1, mass ratio) was slowly dripped into a 50 mL basic solution of NaOH and NH4OH. The solution turned
- advancements in medical fields (hyperthermia and drug delivery), permanent magnet industry, sensoristics, and spintronics. The program has been tested not only on simulated tomograms but also on tomograms obtained on real-life systems of magnetite MNPs, obtained in-house by co-precipitation methods. Starting
Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review
Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40
- methods used for obtaining ZnO nanoparticles, solution synthesis methods such as sol–gel [22], chemical precipitation [23], polyol [24], and solvothermal [25] methods, are inexpensive, consume little energy, allow for a facile control of physical characteristics and morphology of the nanoparticles, offer
- good reproducibility, and are usually effective for large scale production. The chemical precipitation technique has gained increased attention due to its simplicity and efficiency for obtaining nanosized ZnO structures with various morphologies, such as nanoparticles, nanorods, nanoneedles, and
- of this synthesis method is that through the co-precipitation reaction a large amount of nanoparticles can be easily obtained. Moreover, the chemical precipitation method allows for rigorous control over nuclear and particle growth in solution. The polyol method offers good control of the shape and
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