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

• increasing hydrolysis temperature because the higher the temperature, the more the CoFe2O4 crystals form, making it less agglomerated. The CF/GQDs-200 sample with the largest surface area was selected for further studies. Photocatalytic studies Figure 7a presents the decolourisation kinetics over different

• was added, the peak magnitude for MB at 246, 292, and 664 nm decreased remarkably. The colour disappearance and the cleavage of aromatic rings were completed after 120 min of irradiation (Figure 7c). The decolourisation kinetics of MB over CF/GQDs-200 is shown in Figure 7d. The Langmuir–Hinshelwood

• ) UV–vis spectra of MB and the treated solution (V = 100 mL, C0(MB) = 10 ppm, m = 0.05 g, time of darkness adsorption: 60 min, time of light irradiation: 120 min). (d) Decolourisation kinetics (V = 100 mL, C0(MB) = 5–30 ppm, m = 0.05 g, time of darkness adsorption: 60 min, time of light irradiation: 60

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

• long-term transdermal release kinetics of DCS nanocrystals and commercial DCS. (A–E are patch formulation compositions loaded with nanocrystals or commercial DCS that have been described in the section "Preparation of DCS nanocrystals" (n = 3)). Preliminary test of DCS solution in the reservoir

Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate

• Elyad Damerchi,
• Sven Oras,
• Edgars Butanovs,
• Allar Liivlaid,
• Mikk Antsov,
• Boris Polyakov,
• Annamarija Trausa,
• Veronika Zadin,
• Andreas Kyritsakis,
• Loïc Vidal,
• Karine Mougin,
• Siim Pikker and
• Sergei Vlassov

Beilstein J. Nanotechnol. 2024, 15, 435–446, doi:10.3762/bjnano.15.39

• instability and energy minimization via spheroidization [28][31]. It has been demonstrated that various coatings can effectively protect metallic NWs by suppressing surface diffusion [32][33][34]. The kinetics of diffusive processes in NWs are tightly related to the surface energies of the system. Both Ag and

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

• external magnetic field. This finding is crucial for future studies on magnetic field-guided drug release and tumour treatment. Particularly, our research also investigates the effect of varying polymer ratios on drug release kinetics and photothermal efficiency, which was not addressed in the

• was also determined. Consequently, our study represents a novel contribution to the field by investigating the impact of polymer thickness on drug release, offering enhanced drug loading efficiency, improved magnetic properties, and pH-responsive drug release kinetics. Materials and Methods Materials

• differences in drug release kinetics; our nanostructures exhibit a higher drug release percentage at pH 5.5 (84.57%) compared to pH 7.4 (57.71%). This underscores the pH-responsive behaviour of our drug delivery system, which could potentially enhance drug delivery to tumour sites while minimizing off-target

Multiscale modelling of biomolecular corona formation on metallic surfaces

• Parinaz Mosaddeghi Amini,
• Ian Rouse,
• Julia Subbotina and
• Vladimir Lobaskin

Beilstein J. Nanotechnol. 2024, 15, 215–229, doi:10.3762/bjnano.15.21

• engage in a complex interplay of dynamic physicochemical interactions, kinetics, and thermodynamic exchanges that can lead to undesirable outcomes [1][8][9][10]. In a more general context, the importance in understanding the mechanism of bionano interactions arises from the increasing awareness and

• representing the biological aspect of the interface, including amino acids (AAs), milk proteins, and carbohydrates. Additionally, we examine the preferred orientations of these molecules upon adsorption and investigate the kinetics of competitive adsorption among the proteins and lactose, aiming to understand

• compounds that may bind to NPs along with proteins. It can reasonably be assumed that these molecules may alter both the kinetics and equilibrium state of the corona and, moreover, may play a role in biological outcomes. Thus, it is of interest to include these small molecules in the corona simulation to

Graphene removal by water-assisted focused electron-beam-induced etching – unveiling the dose and dwell time impact on the etch profile and topographical changes in SiO₂ substrates

• Aleksandra Szkudlarek,
• Jan M. Michalik,
• Inés Serrano-Esparza,
• Zdeněk Nováček,
• Veronika Novotná,
• Piotr Ozga,
• Czesław Kapusta and
• José María De Teresa

Beilstein J. Nanotechnol. 2024, 15, 190–198, doi:10.3762/bjnano.15.18

• ][17] and all carbon allotropes, such as diamond [18][19] or carbon nanotubes [20]. Although the fundamentals of the FEBIE method are easily intelligible, the process includes complex surface kinetics phenomena occurring between electrons and adsorbed molecules [21]. Hence, the resolution of the method

• as an unwanted co-deposition of amorphous carbon. Those deposition and etching processes may co-exist and can be controlled to a certain level by the electron flux [23]. The influence of surface kinetics phenomena on the etch profiles has not been considered in the previous works describing the proof

In situ optical sub-wavelength thickness control of porous anodic aluminum oxide

• Aleksandrs Dutovs,
• Raimonds Popļausks,
• Oskars Putāns,
• Vladislavs Perkanuks,
• Aušrinė Jurkevičiūtė,
• Tomas Tamulevičius,
• Uldis Malinovskis,
• Iryna Olyshevets,
• Donats Erts and
• Juris Prikulis

Beilstein J. Nanotechnol. 2024, 15, 126–133, doi:10.3762/bjnano.15.12

• correct hPAAO values. The onset of the stable thickness capture mode coincided with the beginning of the plateau observed in the anodization current kinetics curve (Figure 3a), which corresponds to the steady-state growth of PAAO [7]. While the primary focus of this study is on producing sub-wavelength

Development and characterization of potential larvicidal nanoemulsions against Aedes aegypti

• Jonatas L. Duarte,
• Leonardo Delello Di Filippo,
• Anna Eliza Maciel de Faria Mota Oliveira,
• Rafael Miguel Sábio,
• Gabriel Davi Marena,
• Tais Maria Bauab,
• Cristiane Duque,
• Vincent Corbel and
• Marlus Chorilli

Beilstein J. Nanotechnol. 2024, 15, 104–114, doi:10.3762/bjnano.15.10

• oil–surfactant core–shell structure within the micelles. Consequently, a lower amount of monoterpenes is released into the surrounding medium [42]. Among the mathematical models used to study drug kinetics, the Korsmeyer–Peppas release model proved to be the most suitable for our formulations (Table 4

• ). Our results show that Cym-NE has a k value of 10.4, while Myr-NE has a k value of 3.3. A higher k value indicates faster drug release, while a lower k value indicates slower transport kinetics and, consequently, poor drug release from nanocarriers [43]. Furthermore, both Cym-NE and Myr-NE demonstrated

• of cymene and myrcene. Mathematical release kinetics models for nanoemulsions (Cym-NE, Myr-NE) and free terpenes (Cym-Sol and Myr-Sol). Average mortality of Aedes aegypti larvae after 24 h of exposure to the free monoterpenes and their nanoemulsion. Inhibitory concentrations 50 (IC50) of the NEs (Cym

Berberine-loaded polylactic acid nanofiber scaffold as a drug delivery system: The relationship between chemical characteristics, drug-release behavior, and antibacterial efficiency

• Le Thi Le,
• Hue Thi Nguyen,
• Liem Thanh Nguyen,
• Huy Quang Tran and
• Thuy Thi Thu Nguyen

Beilstein J. Nanotechnol. 2024, 15, 71–82, doi:10.3762/bjnano.15.7

• hydrophilic BBR NPs favorably concentrated on the surface of the nanofibers. The relationship between the wettability and the BBR-release behavior of BBR-loaded PLA nanofiber scaffolds will be reported in the following drug-release profiles. In vitro drug-release profiles and release kinetics In vitro release

Influence of conductive carbon and MnCo₂O₄ on morphological and electrical properties of hydrogels for electrochemical energy conversion

• Sylwia Pawłowska,
• Karolina Cysewska,
• Yasamin Ziai,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2024, 15, 57–70, doi:10.3762/bjnano.15.6

• the morphology also facilitates the penetration by the electrolyte, the diffusion of ions to electroactive sites, and the rapid release of the reaction, thus promoting the kinetics of the reaction and achieving higher efficiency of the catalyst built into the 3D structure [19]. The hydrogel matrix

• to electroactive sites, and the rapid release of the reaction, thus promoting the kinetics of the reaction and achieving higher efficiency of the catalyst built into the hydrogel structure [19][21]. The condition which must be met for hydrogels to be used in energy conversion systems is their

• , 9.26 mF/cm2, and 4.38 mF/cm2, respectively, for , , and electrodes [56], but with four times higher catalyst loading. The catalytic kinetics of the hydrogel samples showed a much lower Tafel slope value for pure hydrogel (141 mV/dec) than those obtained for the hydrogel with catalyst and conductive

Curcumin-loaded nanostructured systems for treatment of leishmaniasis: a review

• Douglas Dourado,
• Thayse Silva Medeiros,
• Éverton do Nascimento Alencar,
• Edijane Matos Sales and
• Fábio Rocha Formiga

Beilstein J. Nanotechnol. 2024, 15, 37–50, doi:10.3762/bjnano.15.4

• impact specific drug release kinetics and increase biocompatibility [60]. Different biodegradable polymers have been used for the development of targeted PNPs for the treatment of leishmaniasis [102]. In this scenario, chitosan is an interesting polymer for NP synthesis due to its positive charge, which

• context, we could observe that the studies failed to correlate consecutive intra-macrophage and intra-amastigote cellular uptake kinetics, once it appears to greatly interfere with the proposed biochemical triggers of Leishmania spp. cell death. In addition, the work could also summarize that lipid-based

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

• , evidencing differences in heat transfer. Hence, considering that the precipitation kinetics is controlled by the alkalization process (i.e., the hydrolysis of urea, which depends on the temperature [35]), modifications in the heating process can affect the final size and shape of the particles [69]. This

• size is observed as the volume increases. This feature is related to changes in the heating process (heat transfer) modifying the alkalinization kinetics and the concomitant precipitation process, even after 48 h of recrystallization. These results suggest that the final LDH morphology (size and

Ni, Co, Zn, and Cu metal-organic framework-based nanomaterials for electrochemical reduction of CO₂: A review

• Ha Huu Do and
• Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 904–911, doi:10.3762/bjnano.14.74

• low conductivity of MOFs hampers electron transport, leading to sluggish electrochemical reaction kinetics. To alleviate this problem, highly conductive materials such as graphene, and carbon nanotubes were combined with MOFs to improve overall conductivity. Additionally, the usage of pristine MOFs as

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

• , the estimated value of n was 0.56, suggesting mixed release mechanisms at play with a strong contribution of diffusion. As in our case there is no polymer relaxation involved, it may be hypothesized that the burst effect could be slightly affecting the global kinetics of the process [35]. Although

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

• /mL and 3.0 μg/mL of the nanocatalyst. For the reaction kinetics, the plots of ln(A0/At) values versus reaction time show good linear correlation with high determination coefficients for the degradation of the organic dyes, indicating a pseudo-first-order reaction (Figure 7E and Figure 8E

• NaBH4 solution (0.05 M) was introduced into the cell. Using a UV–vis spectrophotometer, the catalytic degradation of the contaminants was monitored at ambient temperature in 2 min intervals. The reaction kinetics were determined by measuring the reduction in absorption intensity at the corresponding

• (B), and 3.0 μg/mL (C); plots of first-order kinetics (D) and rate constants (E) for the catalytic degradation of methyl orange. UV–vis spectra of the catalyst at concentrations of 1.0 μg/mL (A), 2.0 μg/mL (B), and 3.0 μg/mL (C); plots of first order kinetic (D) and rate constants (E) for the

In situ magnesiothermic reduction synthesis of a Ge@C composite for high-performance lithium-ion batterie anodes

• Ha Tran Huu,
• Ngoc Phi Nguyen,
• Vuong Hoang Ngo,
• Huy Hoang Luc,
• Minh Kha Le,
• Minh Thu Nguyen,
• My Loan Phung Le,
• Hye Rim Kim,
• In Young Kim,
• Sung Jin Kim,
• Van Man Tran and
• Vien Vo

Beilstein J. Nanotechnol. 2023, 14, 751–761, doi:10.3762/bjnano.14.62

• higher specific capacity (432.3 mAh·g−1) of Ge@C-iM750 indicates an improvement in the kinetics of lithium storage reactions, even under the harshest condition of 5000 mA·g−1. The Nyquist plots of all electrodes (Figure 5c) contain a semicircle in the high-to-medium frequency range and a sloping tail in

A graphene quantum dots–glassy carbon electrode-based electrochemical sensor for monitoring malathion

• Sanju Tanwar,
• Aditi Sharma and
• Dhirendra Mathur

Beilstein J. Nanotechnol. 2023, 14, 701–710, doi:10.3762/bjnano.14.56

• cyclic voltammetry results of the GQDs/GCE electrode to study the interfacial kinetics from 20 mV·s−1 scan rate to 400 mV·s−1 scan rate. The increase in the square root of scan rates led to a linear increase in peak current for anodic and cathodic reactions, as shown in Figure 7c. For scan rates of 20 to

The microstrain-accompanied structural phase transition from h-MoO₃ to α-MoO₃ investigated by in situ X-ray diffraction

• Zeqian Zhang,
• Honglong Shi,
• Boxiang Zhuang,
• Minting Luo and
• Zhenfei Hu

Beilstein J. Nanotechnol. 2023, 14, 692–700, doi:10.3762/bjnano.14.55

• File 1 shows photodegradation experiments of methylene blue irradiated by ultraviolet light. The photodegradation rate of methylene blue was quantitatively estimated by pseudo-first-order kinetics. The reaction rate constants (k) are 0.01625, 0.01882, and 0.01258 min−1 for the samples calcinated at 300

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• used to define sensor sensitivity (Figure 4). The minimum analyte concentration that can be reliably and precisely quantified is expressed by the term “limit of quantification” (LOQ). For estimation, a level of 10·Sb/S is recommended. The kinetics of both chemical recognition and signal transduction

• materials as potent analytical tools because of their advantages in terms of portability, affordability, high sensitivity, and ease of fabrication. Through functions such as active large surface area, rapid electrode kinetics, and efficient catalytic activity, the amplification of electrochemical signals

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

• process is primarily the oxygen evolution reaction (OER) due to its sluggish kinetics resulting in a high overpotential and low efficiency [4]. To overcome this problem, robust anode electrode catalyst materials are required. Since the Ru- and Pt-based catalysts used so far for OER are made using limited

• determined to be 99 mV·dec−1, which is in agreement with the literature [36][37]. A lower Tafel slope was observed for nickel coated with GO, indicating faster kinetics towards the OER compared to the bare substrate [38]. The slopes for NiFe (41 mV·dec−1) and CoNiFe (42 mV·dec−1) were similar, which

• transport. The latter can also be confirmed by the Tafel slope analysis. The slopes for NiFe(300 mC)-GO begin to rise quickly, which indicates a change in the OER kinetics due to the slowed exchange of ions and electrons. The connection of GO with NiFe resulted in a slight increase of the value of Cdl/ECSA

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

• nanomedicine has yielded several relevant advancements since its beginnings in the early 2000s. The dissolution kinetics of poorly soluble drugs have been improved by the production of drug nanocrystals, enabling continuous drug release. Lipid molecular structures have been manipulated at the nanoscale to

• (non-adsorbed) surfactant can be in the form of micelles that coexist with the nanoemulsion droplets. The kinetics of surfactant adsorption during droplet formation, droplet coarsening, as well as uncertainties in the estimation of as could also explain the divergences between calculated and

• phase, but it is always smaller (ca. 25 nm from TEM) than the precursor nanoemulsion droplets, regardless of the PLGA concentration. DXM can be encapsulated with efficiencies higher than 88% for PLGA concentrations in the 0.5–4 wt % range. The drug release kinetics seems to be slower as the PLGA

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

• : Heterojunctions, which are the interfaces between two different semiconductors, increase the charge carrier separation efficiency with increased kinetics and strong redox ability. This enhances the photocatalytic capabilities of photocatalysts [101][119][156][157][158][159][160][161]. Depending on how the

• concentrations of contaminants. Both the effectiveness and kinetics of the photocatalytic processes are significantly influenced by the initial concentration of pollutants. Both direct and inverse relationships between the initial concentrations of the pollutants and the degree of their removal have been

Biocatalytic synthesis and ordered self-assembly of silica nanoparticles via a silica-binding peptide

• Mustafa Gungormus

Beilstein J. Nanotechnol. 2023, 14, 280–290, doi:10.3762/bjnano.14.25

• combination with NH3. The reaction kinetics were monitored via measuring the optical density (OD) with UV–vis spectroscopy and the conversion of substrate via gas chromatography coupled with mass spectroscopy (GC–MS). Size and net surface charge distribution of the particles were determined with dynamic light

• scattering (DLS). The efficiency of the self-assembly was evaluated with scanning electron microscopy (SEM), UV–vis spectroscopy, and qualitative visual demonstration. Results and Discussion SiBP alone as catalyst Reaction kinetics were studied via OD measurements of the particles and GC analysis of

• ., Waltham, MA, USA) was used for the quantitative analysis of GC–MS data. The reaction rate of TEOS hydrolysis was calculated according to first-order reaction kinetics [43]. Particle size and zeta potential measurements Measurements were performed using a Zetasizer Nano ZS90 (Malvern Panalytical Ltd

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

• nanocarrier was encapsulated with a cancer cell membrane, which endowed the NPs with the ability to target tumor tissues and mediate tumor killing through chemical kinetics [83]. In addition, further anticancer effects can be exerted by the ginsenoside Rh2, which was delivered by nanocarriers and inhibited