Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability

• Dienifer F. L. Horsth,
• Julia de O. Primo,
• Nayara Balaba,
• Fauze J. Anaissi and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2023, 14, 467–477, doi:10.3762/bjnano.14.37

• band from 600 nm. Reflection bands become more pronounced and defined with increasing colorant ion concentration (Figure S4, Supporting Information File 1). Pigment application Colorimetry The colorimetric parameters of the samples after dispersion in commercial white paint and application on plaster

• of the pigments [1]. The hue value (h*) of sample 1 pigment increased from 80.65 (in powder form) to 107.91 after the dispersion in paint, remaining in the green region. Sample 2 remained in the red area. Color stability Color stability was measured by colorimetry before the test and after 120 and

• dispersion was applied on plaster specimens by painting two coats of paint according to the manufacturer’s instructions. Color stability The chemical stability test was carried out in acidic and alkaline environments using desiccators as a controlled experimental environment. A petri dish was placed in each

Plasmonic nanotechnology for photothermal applications – an evaluation

• A. R. Indhu,
• L. Keerthana and
• Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

Polymer nanoparticles from low-energy nanoemulsions for biomedical applications

• Santiago Grijalvo and
• Carlos Rodriguez-Abreu

Beilstein J. Nanotechnol. 2023, 14, 339–350, doi:10.3762/bjnano.14.29

• obtained as an aqueous dispersion, it facilitates surface functionalization and substance encapsulation [23]. Nanoparticles obtained from nanoemulsions are usually a few tens of nanometers in size and are smaller than the nanoemulsion droplets. In one example, the nanoemulsion droplet templates had a

Quasi-guided modes resulting from the band folding effect in a photonic crystal slab for enhanced interactions of matters with free-space radiations

• Kaili Sun,
• Yangjian Cai,
• Uriel Levy and
• Zhanghua Han

Beilstein J. Nanotechnol. 2023, 14, 322–328, doi:10.3762/bjnano.14.27

• air holes is changed slightly. This intentional geometric perturbation will lead to a doubling of the period in one direction and the corresponding shrinkage of the first Brillouin zone. Because of the translational symmetry in the k-space, leaky waves inheriting the spatial dispersion of the original

• guided modes, which do not interact with external radiation, will appear with the dispersion curves above the light cone. Our results show that ultrahigh Q-factor resonances with large operating bandwidth can be achieved. Interestingly, the perturbation in only one direction of the photonic lattice will

• . The GMs have typical continuous and one-dimensional dispersion curves below the light line over a large bandwidth. This leaky resonance is generated through band folding, which occurs when a perturbation is introduced into a regular periodic structure to have its period increased and the first

Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes

• Akeem Adeyemi Oladipo and
• Faisal Suleiman Mustafa

Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26

• dispersion into the solution. An increase in the concentration of pollutant molecules adsorbed on the catalyst surface while the catalyst dosage is unchanged and the generation of reactive species is constant could be another factor causing the decrease in photocatalytic degradation rate with increasing

Recent progress in cancer cell membrane-based nanoparticles for biomedical applications

• Qixiong Lin,
• Yueyou Peng,
• Yanyan Wen,
• Xiaoqiong Li,
• Donglian Du,
• Weibin Dai,
• Wei Tian and
• Yanfeng Meng

Beilstein J. Nanotechnol. 2023, 14, 262–279, doi:10.3762/bjnano.14.24

• intravenously, while COS-7 cell membrane-coated and bare NPs showed no obvious signal aggregation [52]. Hence, specifically prepared biomimetic NPs may enable the diagnosis and treatment of brain-related diseases. Additionally, the membrane-encapsulated NPs were shown to have better dispersion and longer

A novel approach to pulsed laser deposition of platinum catalyst on carbon particles for use in polymer electrolyte membrane fuel cells

• Bogusław Budner,
• Wojciech Tokarz,
• Sławomir Dyjak,
• Andrzej Czerwiński,
• Bartosz Bartosewicz and
• Bartłomiej Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 190–204, doi:10.3762/bjnano.14.19

• and physical methods of Pt deposition [22][23][24][25][26]. Direct deposition of Pt onto carbon supports resulting in a thin catalyst layer and good dispersion of formed Pt nanoparticles (PtNPs) is of particular interest because it should allow for a high Pt mass-specific power density to be achieved

• fourth-degree polynomials. The dispersion of the measurement points visible for the individual curves results mainly from the nonuniform water transport in the cell (water management). Water enters the cell as water vapor with together the humidified gases and forms during the reactions. It condenses in

• characterization of fabricated catalysts by HAADF, EDX, and TEM showed a greater uniformity and a higher dispersion of the PtNPs on the carbon supports compared to the reference catalysts. However, only in the case of catalysts based on the commercial carbon support Vulcan XC-72R maximum cell power densities

A distributed active patch antenna model of a Josephson oscillator

• Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2023, 14, 151–164, doi:10.3762/bjnano.14.16

• resistance contribution can be accounted for using the TL analysis. The quality factor of a TL is determined by the relation where k1 and k2 are real and imaginary parts of the wave number in the TL, k = k1 − ik2. They are obtained from the TL dispersion relation, Taking into account that GQP = 1/RQP ≪ ωC

Batch preparation of nanofibers containing nanoparticles by an electrospinning device with multiple air inlets

• Dong Wei,
• Chengwei Ye,
• Adnan Ahmed and
• Lan Xu

Beilstein J. Nanotechnol. 2023, 14, 141–150, doi:10.3762/bjnano.14.15

• enabled the ZnO nanoparticles contained in the spinning solution to maintain uniform dispersion in the batch preparation process of nanofibers by means of air flow produced through multiple pores. The airflow reduces the agglomeration of nanoparticles, thus yielding nanofibers with uniform ZnO loading. In

• nanofibers in batches. It was found that the distribution of ZnO nanoparticles in the composite nanofibers obtained by EMAI was more uniform than that by SSFSE. This was because the air flow through multiple pores enabled the ZnO nanoparticles in the spinning solution to maintain uniform dispersion in the

Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating

• Jessica Plé,
• Marine Dabert,
• Helene Lecoq,
• Sophie Hellé,
• Lydie Ploux and
• Lavinia Balan

Beilstein J. Nanotechnol. 2023, 14, 95–109, doi:10.3762/bjnano.14.11

• dispersion can be expected to be relatively similar for both coatings with a slightly smaller size dispersion for the Ag@PEG600DA/PETIA coating. Further exposure to UV light eventually turns the surface of the coating into a metallic silver layer with remarkable mirror-like properties (Figure 2). The optical

• (Figure 4a) and Ag@PEG600DA/PETIA (Figure 4b) coatings, respectively. The AgNP size dispersion is also slightly higher in the case of Ag@PEG600DA. Both results are coherent with the peak and FMWH values calculated from the absorbance spectra (Figure 2c). Transmission electron microscopy (TEM) cross

Liquid phase exfoliation of talc: effect of the medium on flake size and shape

• Samuel M. Sousa,
• Helane L. O. Morais,
• Joyce C. C. Santos,
• Ana Paula M. Barboza,
• Bernardo R. A. Neves,
• Elisângela S. Pinto and
• Mariana C. Prado

Beilstein J. Nanotechnol. 2023, 14, 68–78, doi:10.3762/bjnano.14.8

• the talc concentration was also diminished to keep the mass ratio between surfactant and talc constant, the effect must be due to the surfactant arrangement (i.e., the presence or absence of molecular aggregates) and a higher relative amount of dispersion medium (the water-to-talc ratio is larger in

Solvent-induced assembly of mono- and divalent silica nanoparticles

• Bin Liu,
• Etienne Duguet and
• Serge Ravaine

Beilstein J. Nanotechnol. 2023, 14, 52–60, doi:10.3762/bjnano.14.6

• assembly into colloidal polymers was recently reported [29][30]. Indeed, we previously showed that 2-PSN, which exhibit a disk-like morphology with a diameter of 190 nm, formed chains as long as 6 µm (Figure 6a, bottom row) when 30 vol % of salty water was added into the NP dispersion in THF. As a result

• similar way from 55 ± 2 nm silica nanoparticles which were functionalized with MMS at 0.5 funct./nm2. Controlled growth of the silica core According to the procedure reported in [30], 9.1 mL of absolute ethanol, 0.7 mL of ammonia, and 0.2 mL of the dispersion of monopods (1.8 × 1016 part/L) or bipods (1.8

• a NaCl aqueous solution) was added dropwise under stirring into the THF dispersion of 1-PSN to reach the targeted volume fraction and a total volume of 1 mL. It took about 20 s to add 100 μL. Assembled structures were monitored by collecting 50 µL samples at various incubation times and direct

Two-step single-reactor synthesis of oleic acid- or undecylenic acid-stabilized magnetic nanoparticles by thermal decomposition

• Mykhailo Nahorniak,
• Pamela Pasetto,
• Jean-Marc Greneche,
• Volodymyr Samaryk,
• Sandy Auguste,
• Anthony Rousseau,
• Nataliya Nosova and
• Serhii Varvarenko

Beilstein J. Nanotechnol. 2023, 14, 11–22, doi:10.3762/bjnano.14.2

• nanoparticles [19][20]. To synthesize magnetite nanoparticles, an additional component (e.g., 1,2-hexadecandiol) was introduced into the system [21]. According to the most common method, a dispersion of magnetite nanoparticles is obtained via thermolysis of commercial or separately synthesized Fe(III) oleate at

Single-step extraction of small-diameter single-walled carbon nanotubes in the presence of riboflavin

• Polina M. Kalachikova,
• Anastasia E. Goldt,
• Eldar M. Khabushev,
• Timofei V. Eremin,
• Timofei S. Zatsepin,
• Elena D. Obraztsova,
• Konstantin V. Larionov,
• Liubov Yu. Antipina,
• Pavel B. Sorokin and
• Albert G. Nasibulin

Beilstein J. Nanotechnol. 2022, 13, 1564–1571, doi:10.3762/bjnano.13.130

• novel approach to disperse and extract small-diameter single-walled carbon nanotubes (SWCNTs) using an aqueous solution of riboflavin and Sephacryl gel. The extraction of small-diameter semiconducting SWCNTs was observed, regardless of the initial diameter distribution of the SWCNTs. Dispersion of

• biocompatibility of nucleic acids can support biomedical applications of such dispersions. Unfortunately, an extensive ultrasonic treatment required to obtain a dispersion of individual nanotubes might destroy fragile nucleic acid molecules so that their applications are somewhat inhibited. Flavin compounds are

• solubilize SWCNTs, no data on chirality separation of SWCNTs using pure aqueous riboflavin is available to date. Here, we report the dispersion of single-walled carbon nanotubes by aqueous riboflavin solution to extract a small-diameter fraction of SWCNTs from polydisperse samples by highly-efficient single

In search of cytotoxic selectivity on cancer cells with biogenically synthesized Ag/AgCl nanoparticles

• Mitzi J. Ramírez-Hernández,
• Mario Valera-Zaragoza,
• Omar Viñas-Bravo,
• Ariana A. Huerta-Heredia,
• Miguel A. Peña-Rico,
• Erick A. Juarez-Arellano,
• David Paniagua-Vega,
• Eduardo Ramírez-Vargas and
• Saúl Sánchez-Valdes

Beilstein J. Nanotechnol. 2022, 13, 1505–1519, doi:10.3762/bjnano.13.124

• indicated with asterisks. In an earlier work, the same combination of Ag and AgCl signals was obtained using extracts of Stevia rebaudiana [21]. In that report, the effect of the ratio between metallic AgNPs and AgClNPs on the morphology and dispersion in a thermoplastic starch matrix was demonstrated. At

Hydroxyapatite–bioglass nanocomposites: Structural, mechanical, and biological aspects

• Olga Shikimaka,
• Mihaela Bivol,
• Bogdan A. Sava,
• Marius Dumitru,
• Christu Tardei,
• Beatrice G. Sbarcea,
• Daria Grabco,
• Constantin Pyrtsac,
• Daria Topal,
• Andrian Prisacaru,
• Vitalie Cobzac and
• Viorel Nacu

Beilstein J. Nanotechnol. 2022, 13, 1490–1504, doi:10.3762/bjnano.13.123

• dispersion medium, all of analytical purity; the sol–gel method was described elsewhere [36] (method I - HAG 1b). After the calcination at 900 °C for 2 h, the samples were ground to obtain the HAG powder of about 55 nm particle size. The bioglass composition is presented in Table 1. The samples were prepared

Structural studies and selected physical investigations of LiCoO₂ obtained by combustion synthesis

• Monika Michalska,
• Paweł Ławniczak,
• Tomasz Strachowski,
• Adam Ostrowski and
• Waldemar Bednarski

Beilstein J. Nanotechnol. 2022, 13, 1473–1482, doi:10.3762/bjnano.13.121

• values (a0 = 2.81498 Å, c0 = 14.0493 Å, V0 = 96.41 Å3) of the ICDD PDF card. All the lattice constants are similar to “ideal” patterns (in the PDF4+2021 ICDD database, the lattice constants for a fixed stoichiometric dispersion pattern are a = 2.792–2.856 Å, c = 14.033–14.289 Å) and are within the range

Rapid and sensitive detection of box turtles using an electrochemical DNA biosensor based on a gold/graphene nanocomposite

• Abu Hashem,
• M. A. Motalib Hossain,
• Ab Rahman Marlinda,
• Mohammad Al Mamun,
• Khanom Simarani and
• Mohd Rafie Johan

Beilstein J. Nanotechnol. 2022, 13, 1458–1472, doi:10.3762/bjnano.13.120

• solution at a scan rate of 50 mV/s. After that, the electrode was entirely washed with ultrapure water, then ultrasonically cleaned in ultrapure water, and dried in an oven at 50 °C for 2 h. Graphere was dispersed into deionised water by ultrasonication to form a Gr dispersion with a 1 mg/mL concentration

Facile preparation of Au- and BODIPY-grafted lipid nanoparticles for synergized photothermal therapy

• Yuran Wang,
• Xudong Li,
• Haijun Chen and
• Yu Gao

Beilstein J. Nanotechnol. 2022, 13, 1432–1444, doi:10.3762/bjnano.13.118

• release properties were evaluated in PBS with different pH values (pH 7.4 and 5.5). AB-LNPs dispersion (2 mL) in a dialysis bag was placed in 20 mL release medium. After 2 h and after 6 h, the sample was irradiated with a 680 nm laser (0.5 W/cm2, 60 s). At predetermined time points, 1 mL of solution was

• first reaction order (method A) is mixing Au3+ with preformed LNPs to form Au-LNPs (the synthesis procedures for Au-LNPs were reported previously [8]) followed by addition of an aqueous BDP suspension. The blue dispersion of Au-LNPs turned green after the addition of BDP. After mixing Au-LNPs with BDP

• (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

Orally administered docetaxel-loaded chitosan-decorated cationic PLGA nanoparticles for intestinal tumors: formulation, comprehensive in vitro characterization, and release kinetics

• Sedat Ünal,
• Osman Doğan and
• Yeşim Aktaş

Beilstein J. Nanotechnol. 2022, 13, 1393–1407, doi:10.3762/bjnano.13.115

• nanoparticle aqueous dispersion and the mucin. For this purpose, 40 mg mucin powder was dispersed in 50 mL ultrapure water and stirred for 12 h. Then, by centrifugation at 8000 rpm for 15 min, excess mucin was removed and the mucin solution was obtained. Mucin solution and nanoparticle dispersions were mixed

• at a ratio of 1:4 (mucin solution/nanoparticle dispersion, v/v) and vortexed for 90 s. Mucin–nanoparticle mixtures and aqueous dispersions of nanoparticles were incubated at 37 °C and turbidimetric measurements were conducted at 650 nm at predetermined time points (0, 30, 60, and 120 min

• then applied over the gelatin layer. Initially, a 10 percent (w/v) gelatin dispersion was made by heating 50 mL of ultrapure water on a magnetic stirrer to 60 °C, and then 1 mL of the dispersion was added to each well of the 24-well cell plates. The gelatin layer in the experimental model was cooled to

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

• Vishal Dutta,
• Ankush Chauhan,
• Ritesh Verma,
• C. Gopalkrishnan and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

• thanks to the significant charge carrier dispersion provided by hybrid orbitals involving the Bi 6s orbital, as seen in Figure 2. Photoinduced electron–hole separation and charge carrier transfer in Bi-based materials are facilitated by a unique layered structure that creates an IEF. A magnetic field is

Studies of probe tip materials by atomic force microscopy: a review

• Ke Xu and
• Yuzhe Liu

Beilstein J. Nanotechnol. 2022, 13, 1256–1267, doi:10.3762/bjnano.13.104

• generated in the colloidal films by controlling them, thus causing the colloidal films to split to form regular fibrous colloidal crystals. The morphology of the colloidal fibers can be effectively controlled by controlling the dispersion components, temperature, particle concentration, and other factors

Roll-to-roll fabrication of superhydrophobic pads covered with nanofur for the efficient clean-up of oil spills

• Patrick Weiser,
• Robin Kietz,
• Marc Schneider,
• Matthias Worgull and
• Hendrik Hölscher

Beilstein J. Nanotechnol. 2022, 13, 1228–1239, doi:10.3762/bjnano.13.102

• . Furthermore secondary pollution is a problem with burning [34]. Chemical dispersion can be a last-ditch effort to protect sensitive areas from an oil spill but does not separate the oil from the water; many dispersants can also be toxic to the environment [33]. Commonly used sorbents used in the emergency

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

• Aisha Kanwal,
• Naheed Bibi,
• Sajjad Hyder,
• Arif Muhammad,
• Hao Ren,
• Jiangtao Liu and
• Zhongli Lei

Beilstein J. Nanotechnol. 2022, 13, 1068–1107, doi:10.3762/bjnano.13.93

Electrocatalytic oxygen reduction activity of AgCoCu oxides on reduced graphene oxide in alkaline media

• Iyyappan Madakannu,
• Indrajit Patil,
• Bhalchandra Kakade and
• Kasibhatta Kumara Ramanatha Datta

Beilstein J. Nanotechnol. 2022, 13, 1020–1029, doi:10.3762/bjnano.13.89

• nanostructures. Also, upon increasing the Ag fraction in the sample, the dispersion of the trimetallic assembly considerably increases, which is clearly reflected in Figure S3c–e, Supporting Information File 1. The importance of the rGO support is further evident from the imaging of supportless the ACC-2* sample