Photocatalytic degradation of methylene blue under visible light by cobalt ferrite nanoparticles/graphene quantum dots

• Vo Chau Ngoc Anh,
• Le Thi Thanh Nhi,
• Le Thi Kim Dung,
• Dang Thi Ngoc Hoa,
• Nguyen Truong Son,
• Nguyen Thi Thao Uyen,
• Nguyen Ngoc Uyen Thu,
• Le Van Thanh Son,
• Le Trung Hieu,
• Tran Ngoc Tuyen and
• Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 475–489, doi:10.3762/bjnano.15.43

• , available to react with H2O to produce •OH radicals. The electrons in the CB band directly reduce MB to its degradation products or interact with oxygen in the aqueous solution to form peroxy anion radicals (). A part of h+ oxidizes water to form hydroxyl radicals (•OH), or it can oxidize directly MB to its

Fabrication of nanocrystal forms of ᴅ-cycloserine and their application for transdermal and enteric drug delivery systems

• Hsuan-Ang Tsai,
• Tsai-Miao Shih,
• Theodore Tsai,
• Jhe-Wei Hu,
• Yi-An Lai,
• Jui-Fu Hsiao and
• Guochuan Emil Tsai

Beilstein J. Nanotechnol. 2024, 15, 465–474, doi:10.3762/bjnano.15.42

• vitro transdermal delivery and in vivo pharmacokinetic (PK) studies. Materials and Methods Preparation of DCS nanocrystals A saturated DCS aqueous solution was prepared by dissolving 100 mg of DCS powder (Stride Pharma Science Ltd.) in 1 mL of deionized water. Then, 10 mL of the saturated DCS solution

• detection was accomplished with a LYNXEYE detector (Bruker AXS GmbH), and the XRPD patterns were obtained on a D8 ADVANCE (Bruker AXS GmbH). Preparation of different hydrophobic formulations mixed with DCS aqueous solution for the reservoir transdermal delivery The DCS aqueous solution was mixed with

• storage conditions for the formulation of the DSC aqueous solution, and any potential incompatibilities between the DSC aqueous solution and other excipients. We found that without adding NaOH solution to the Formulation Test 2 and 3 in Table 1, the color of the DCS solution changed from colorless to dark

Vinorelbine-loaded multifunctional magnetic nanoparticles as anticancer drug delivery systems: synthesis, characterization, and in vitro release study

• Zeynep Özcan and
• Afife Binnaz Hazar Yoruç

Beilstein J. Nanotechnol. 2024, 15, 256–269, doi:10.3762/bjnano.15.24

• aqueous solution, showing promising prospects for use in magnetically targeted therapy. Determination of photothermal stability and efficiency To evaluate the photothermal performance of the nanostructures, the NPs were irradiated with an 808 nm laser at a power density of 1 W/cm2 for 5 min. A slight

New application of bimetallic Ag/Pt nanoplates in a colorimetric biosensor for specific detection of E. coli in water

• Azam Bagheri Pebdeni,
• Mohammad N. AL-Baiati and
• Morteza Hosseini

Beilstein J. Nanotechnol. 2024, 15, 95–103, doi:10.3762/bjnano.15.9

• spectroscopy (EDS) was used to examine Ag and Pt on the synthesized NPLs (Figure 1b). The percentage of Pt is smaller than that of Ag, indicating that a thin layer of Pt ions has been coated on the surface of Ag NPLs. In the aqueous solution, the Ag/Pt NPLs appear bluish purple. To predict the secondary

• /Pt NPLs A modified chemical reduction method was used to create Ag NPLs [26][38]. The aqueous solution synthesis of Ag-Pt NPL is described below. To begin, 50 L of 0.05 M AgNO3 aqueous solution was mixed with 10 mL of 2.5 × 10−4 M sodium citrate aqueous solution. After that, 25 µL of 0.1 M ascorbic

• acid solution was gradually added to a stirred mixture of sodium citrate and AgNO3. The purple Ag seed solution was then obtained. In addition, 10 mL of 0.05 M AgNO3 aqueous solution was mixed with 20 mL of 0.1 M hexadecyltrimethylammonium bromide (CTAB) aqueous solution. Slowly, 10 mL of 0.1 M

Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study

• Nittiya Suwannasom,
• Netsai Sriaksorn,
• Chutamas Thepmalee,
• Krissana Khoothiam,
• Ausanai Prapan,
• Hans Bäumler and
• Chonthida Thephinlap

Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93

• solution produced by reverse engineering, and make quality control more challenging [19]. Additionally, the degummed silk tends to aggregate when stored for long periods in an aqueous solution, typically for weeks at room temperature and for months at 4 °C [20]. Amongst various carriers, albumin seems to

• -HSA-MPs yielded CUR concentrations of 0.55–0.60 mg/mL as estimated by absorbance measurements, which is a more than 400-fold increase in solubility compared to free CUR (1.34 µg/mL [8]). Due to its hydrophobic nature, CUR aggregates in aqueous solution and interacts with the hydrophobic clusters of

Upscaling the urea method synthesis of CoAl layered double hydroxides

• Camilo Jaramillo-Hernández,
• Víctor Oestreicher,
• Martín Mizrahi and
• Gonzalo Abellán

Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76

• Synthesis method based on urea hydrolysis The synthesis of the CoAl layered double hydroxide phase was carried out by hydrolysis of urea in a two-neck flask (with a reflux condenser) using 50 mL of an aqueous solution of the metal salts at 97 °C for 48 h under Ar atmosphere. The system was continuously

N-Heterocyclic carbene-based gold etchants

• Robert B. Chevalier,
• Justin Pantano,
• Matthew K. Kiesewetter and
• Jason R. Dwyer

Beilstein J. Nanotechnol. 2023, 14, 865–871, doi:10.3762/bjnano.14.71

• reported the use of a benzimidazolium gold complex in dichloromethane (DCM) that readily functionalizes gold nanoparticles (AuNPs) in aqueous solution [15][19]. In our work using solution-based approaches to form NHC monolayers on gold thin films, we observed a loss of gold from our substrates. It is

• aqueous solution with 10 μL of 5.00 × 10−3 M of 1 in THF. No appreciable change in the UV–vis spectrum was observed over 6 h of hourly measurements (Figure 5), indicating no detectable change in diameter (ca. 47 nm) and concentration of the nanoparticles [26]. This is not surprising given the low

Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies

• Giuliana Muraca,
• María Esperanza Ruiz,
• Rocío C. Gambaro,
• Sebastián Scioli-Montoto,
• María Laura Sbaraglini,
• Gisel Padula,
• José Sebastián Cisneros,
• Cecilia Yamil Chain,
• Vera A. Álvarez,
• Cristián Huck-Iriart,
• Guillermo R. Castro,
• María Belén Piñero,
• Matias Ildebrando Marchetto,
• Catalina Alba Soto,
• Germán A. Islan and
• Alan Talevi

Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66

• (ethylene glycol)) in 20 mL of ultrapure water (Milli-Q®, Millipore, Ma., USA) and was preheated at the same temperature as the melted lipid in the water bath. After 30 min of thermostatization, the aqueous solution was poured over the lipid phase, and ultrasonication was carried out for 20 min at an 80

Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity

• Nguyen Thi Thanh Tu,
• T. Lan-Anh Vo,
• T. Thu-Trang Ho,
• Kim-Phuong T. Dang,
• Van-Dung Le,
• Phan Nhat Minh,
• Chi-Hien Dang,
• Vinh-Thien Tran,
• Van-Su Dang,
• Tran Thi Kim Chi,
• Hieu Vu-Quang,
• Radek Fajgar,
• Thi-Lan-Huong Nguyen,
• Van-Dat Doan and
• Thanh-Danh Nguyen

Beilstein J. Nanotechnol. 2023, 14, 781–792, doi:10.3762/bjnano.14.64

• , an aqueous solution of calcium acetate (14.36 mL; 6.5 mg·mL−1) was slowly added dropwise into an aqueous solution of sodium alginate (40 mL; 7 mg·mL−1) under stirring for 1 h at 1200 rpm. The mixture was allowed to equilibrate overnight. Subsequently, the Alg/Ca2+ spheres were separated by

• centrifugation at 3000 rpm for 10 min and washed three times with distilled water (20 mL each) to remove impurities. Next, an aqueous solution of lactose (16.06 mL, 1.5 mg·mL−1) was added to the Alg/Ca2+ spheres and stirred for 1 h at 1200 rpm. To ensure the formation of a stable gel, the Lac/Alg gel solution

• was ultrasonically treated for 30 min and left to reach equilibrium overnight. After purification, the resulting gel was freeze-dried at −80 °C for 24 h using an EYELA FDU-2110 (Japan) instrument. Next, an aqueous solution of AgNO3 (15 mL) with different concentrations in the range of 7.9–55.6 μg·mL−1

Carboxylic acids and light interact to affect nanoceria stability and dissolution in acidic aqueous environments

• Matthew L. Hancock,
• Eric A. Grulke and
• Robert A. Yokel

Beilstein J. Nanotechnol. 2023, 14, 762–780, doi:10.3762/bjnano.14.63

• interactions play a critical role in biological processes [30]. Nanoceria dissolution Nanoceria dissolution or agglomeration is pH-dependent and influenced by carboxylic acids. Nanoceria dissolution in aqueous solution was shown to be pH-dependent with dissolution occurring at pH values less than 7 [31

• dissolution, since nanoceria particles are known to be photoreduced upon UV radiation exposure, demonstrated by UV exposure of 2 and 9 nm citrate-coated ceria nanoparticles in aqueous solution at pH 6.5 to 7.0 [50] and 3 nm ceria nanoparticles in aqueous solution at pH 2 [51]. Furthermore, this result

Titania nanoparticles for photocatalytic degradation of ethanol under simulated solar light

• Evghenii Goncearenco,
• Iuliana P. Morjan,
• Claudiu Teodor Fleaca,
• Florian Dumitrache,
• Elena Dutu,
• Monica Scarisoreanu,
• Valentin Serban Teodorescu,
• Alexandra Sandulescu,
• Crina Anastasescu and
• Ioan Balint

Beilstein J. Nanotechnol. 2023, 14, 616–630, doi:10.3762/bjnano.14.51

• from the interaction with photogenerated hydroxyl radicals. Despite the fact that radical trapping was performed in aqueous solution, it can be indicative for the ability of the catalyst surface to generate hydroxyl radicals in the present investigated system. The main reactions leading to (•OH

SERS performance of GaN/Ag substrates fabricated by Ag coating of GaN platforms

• Magdalena A. Zając,
• Bogusław Budner,
• Malwina Liszewska,
• Bartosz Bartosewicz,
• Łukasz Gutowski,
• Jan L. Weyher and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 552–564, doi:10.3762/bjnano.14.46

• sapphire wafers. The cut samples were cleaned in organic solvents and rinsed in de-ionized water. Samples were then photoetched in stirred KSO-D solution (0.02 M K2S2O8 + 0.02 M KOH aqueous solution) under illumination of a 300 W UV-enhanced Xe lamp (Oriel, Newport, UK). This photoetching procedure results

Conjugated photothermal materials and structure design for solar steam generation

• Chia-Yang Lin and
• Tsuyoshi Michinobu

Beilstein J. Nanotechnol. 2023, 14, 454–466, doi:10.3762/bjnano.14.36

• constructing electron donor–acceptor pairs. Density functional theory (DFT) simulations indicated donor–acceptor interactions between arginine and PDA subunits, including the formation of 5,6-dihydroxyindole (DHI) and indole-5,6-quinone (IQ). Dopamine and arginine were copolymerized in an aqueous solution at

Evaluation of electrosynthesized reduced graphene oxide–Ni/Fe/Co-based (oxy)hydroxide catalysts towards the oxygen evolution reaction

• Karolina Cysewska,
• Marcin Łapiński,
• Marcin Zając,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2023, 14, 420–433, doi:10.3762/bjnano.14.34

• reduction of the GO. A reduced form of GO combined with NiFe was also obtained by others after one-step electrodeposition by cyclic voltammetry [12]. Electrochemical studies of the catalysts towards the OER The electrochemical performance of the catalysts towards the OER was studied in an aqueous solution

• , respectively, on their electrocatalytic performance towards the OER and on the value of Cdl/ECSA. The LSV profiles of NiFe (Qdep: 50–200 mC)-GO recorded in an aqueous solution of 1 M KOH and the corresponding evolution of the OER overpotentials are presented in Figure 6a and Figure 6c, respectively. The graphs

• was the structure of NiFe and the electroactive surface area of GO. Experimental Fabrication of the catalysts NiFe and CoNiFe oxides/(oxy)hydroxides were synthesized in a one-step process by electrodeposition at −1.1 V vs Ag/AgCl in an aqueous solution of 4 mM nickel(II) nitrate hexahydrate (Ni(NO3)2

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

Quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles: one-pot synthesis, characterization, and anticancer and antibacterial activities

• Akif Hakan Kurt,
• Elif Berna Olutas,
• Fatma Avcioglu,
• Hamza Karakuş,
• Mehmet Ali Sungur,
• Cansu Kara Oztabag and
• Muhammet Yıldırım

Beilstein J. Nanotechnol. 2023, 14, 362–376, doi:10.3762/bjnano.14.31

• as described in [59][60] with slight modifications. A solution of 0.1% chitosan (w/v) was prepared in 1% acetic acid solution under stirring at room temperature for about 24 h. Then, the chitosan solution was placed in an ice bath. To this solution, 1 mL of 50 mM AgNO3 aqueous solution was added to

• certain concentrations (50–200 μg/mL) were prepared in DMSO. Each standard solution (100 µL) was then diluted with distilled water (1.8 mL) and mixed with a 2% aqueous solution of anhydrous AlCl3 (100 µL). The obtained mixtures were vortexed. After incubation for 10 min at ambient temperature, absorbances

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

• content is not subject to CC BY 4.0. TEM images and corresponding size distributions of (a) PEGylated polyurethane and (b) lysine-coated polyurea nanocapsules obtained from O/W nanoemulsions in an aqueous solution/polysorbate 80/medium chain triglyceride/diisocyanate system at O/S = 10/90 and 90 wt % of

Cyclodextrins as eminent constituents in nanoarchitectonics for drug delivery systems

• Makoto Komiyama

Beilstein J. Nanotechnol. 2023, 14, 218–232, doi:10.3762/bjnano.14.21

• photocatalytic process destroy subcellular structures (e.g., cell membranes or organelle membranes). Various types of cancers are effectively treatable without significant side effects. However, most photosensitizers available at present are hydrophobic and easily aggregate in aqueous solution. Thus, the

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

• dark-grey powder was collected from the crucible and purified by stirring in an aqueous solution of hydrochloric acid (20 wt %) at boiling point (to remove MgO, CaO, and other byproducts of the combustion soluble in acids). After acid treatment, the black powder was filtered, washed with distilled

Structural, optical, and bioimaging characterization of carbon quantum dots solvothermally synthesized from o-phenylenediamine

• Zoran M. Marković,
• Milica D. Budimir,
• Martin Danko,
• Dušan D. Milivojević,
• Pavel Kubat,
• Danica Z. Zmejkoski,
• Vladimir B. Pavlović,
• Marija M. Mojsin,
• Milena J. Stevanović and
• Biljana M. Todorović Marković

Beilstein J. Nanotechnol. 2023, 14, 165–174, doi:10.3762/bjnano.14.17

• 5% CO2. 5 × 104 Hela cells were seeded on cover slips in 12-well plates and incubated overnight to allow cells to attach. The next day, cells were treated with medium containing aqueous solution of CQDs at a final concentration of 200 µg/mL (deionized water was used as a negative vehicle control

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

• Waals heterostructures. Being able to scale the production is a crucial step to realizing applications at an industrial level. We present the results of liquid-phase exfoliation of talc using different liquid media, namely sodium cholate aqueous solution (6 mg/mL and 1 mg/mL), Triton X-100 aqueous

• most symmetrical are those of butanone and Triton X-100. All comparisons can be found in Table 3. Finally, let us analyze advantages and drawbacks of each sample. An aqueous solution of 6 mg/mL sodium cholate is a widely recommended medium for liquid exfoliation [6][11]. For talc, it does yield the

• acceleration and duration, and sample deposition) were kept constant. Four different media were employed to exfoliate talc. Aqueous solutions of sodium cholate at 1 and 6 mg/mL (with the talc powder concentration adapted to keep the cholate/talc ratio constant), an aqueous solution of Triton-X100, and pure

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

• 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

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

• be attributed to solvatochromism induced by noncovalent interactions between nanotubes and the aromatic isoalloxazine moiety of riboflavin in aqueous solution. The PL map of the first eluted fraction of Tuball in riboflavin-separated dispersion (Figure 3b and Figure S2, Supporting Information File 1

• to its low solubility in water, which leads to poor solubilization of SWCNT bundles. Lower riboflavin concentrations did not affect the dispersion process of nanotubes in any way. To analyze the dispersing ability of riboflavin, the same amount of SWCNTs was dispersed in 1% w/w SDS aqueous solution

Non-stoichiometric magnetite as catalyst for the photocatalytic degradation of phenol and 2,6-dibromo-4-methylphenol – a new approach in water treatment

• Joanna Kisała,
• Anna Tomaszewska and
• Przemysław Kolek

Beilstein J. Nanotechnol. 2022, 13, 1531–1540, doi:10.3762/bjnano.13.126

• the adsorption of organic compounds onto the surface of the catalyst. The sorption power depends largely on the properties of the organic molecule in question, as well as on the properties of the catalyst’s surface. The test reactions were carried out in aqueous solution at pH 8 (due to the hydrolytic

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

• obtained bioglass in an agate mortar. (vii) Sieving of the BG powder to obtain powder of particle sizes below 64 μm. The HA-BG composites were obtained by mixing 90 or 95 wt % of HA (HAP or HAG) powder with, respectively, 10 or 5 wt % of BG powder. An aqueous solution of 7% polyvinyl alcohol (PVA) was