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

• . Considering the experimental conditions for the production of pure CoAl-based LDH, we decided to compare the synthesis performance in terms of the space–time yield (STY). The STY value, defined as the amount of material (in kg) that can be produced per volume (in m3) per day, provides a good parameter to

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

• performance of CO production (FECO = 78.8% at −0.85 V vs RHE), compared to its bulk counterpart with a value of 33.7% (Figure 2b). The optimal sample also showed a high turnover frequency (TOF) and outstanding stability after a testing period of 14 h (Figure 2c,d). The high catalytic activity can be ascribed

• carbon pastes, which serve as cathodes for CO2RR. To illustrate, Kornienko et al. deposited a Co-based MOF material onto an FTO substrate as a working electrode for CO2 conversion [40]. This material exhibited good performance in CO generation, achieving a faradaic efficiency (FE) of 76% (at −0.7 V vs

• nature, and high efficiency. Therefore, considerable interest has been directed towards exploring the potential of Zn-based MOFs in CO2RR applications. Wang and co-workers successfully prepared ZIF-8 from different metal salts for CO2RR [42]. ZIF-8 derived from ZnSO4 yielded the best performance for the

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

• formation of molecular monolayers on gold surfaces supports a wide range of fundamental science and technological applications. While thiol-containing species continue to dominate monolayer formation, the pursuit and characterization of monolayer precursors with superior performance has been ongoing. NHCs

• ]. More recently, however, there has been an important and active effort to develop new organic ligands that support noble metal dissolution or extraction in more environmentally benign ways [28][29][30]. We present here a number of single-solute gold etchants where etching performance can be tuned by

Industrial perspectives for personalized microneedles

• Remmi Danae Baker-Sediako,
• Benjamin Richter,
• Matthias Blaicher,
• Michael Thiel and
• Martin Hermatschweiler

Beilstein J. Nanotechnol. 2023, 14, 857–864, doi:10.3762/bjnano.14.70

• ultimately impede quality control [49]. Finally, DLP- and SLA-fabricated microneedles are often dull with a low aspect ratio [50], and this again affects their performance (e.g., penetration). Hence, 3D printing via 2PP is currently the best commercially available microfabrication method to enable

Biomimetics on the micro- and nanoscale – The 25th anniversary of the lotus effect

• Matthias Mail,
• Kerstin Koch,
• Thomas Speck,
• William M. Megill and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 850–856, doi:10.3762/bjnano.14.69

• densely covers both leaf surfaces, contributes to the plant's adaptation to severe environmental conditions in Antarctica by increasing its resistance to cold temperatures, icing, harmful UV radiation, and dehydration. In the paper “Micro-structures, nanomechanical properties and flight performance of

• three beetles with different folding ratios”, Sun et al. [8] use modern, high-precision instruments to uncover the relationship between wing morphology and flight performance of three species of beetles. They use a high-speed camera to track flapping frequency, quantify the surface geometry of the wings

• with a super depth-of-field microscope, measure cross-sections of veins of wings via SEM, and characterize the nanomechanical structural and elastic behaviour of the structures using a nanoindenter. The authors use the detailed observations obtained to explore the relative aerodynamical performance of

A wearable nanoscale heart sound sensor based on P(VDF-TrFE)/ZnO/GR and its application in cardiac disease detection

• Yi Luo,
• Jian Liu,
• Jiachang Zhang,
• Yu Xiao,
• Ying Wu and
• Zhidong Zhao

Beilstein J. Nanotechnol. 2023, 14, 819–833, doi:10.3762/bjnano.14.67

• improved the film-making process by adding fillers to P(VDF-TrFE), using secondary polarization, and applying other methods to enhance its piezoelectric performance. Kumar et al. prepared P(VDF-TrFE)/ZnO matrix composite nanogenerators using electrospinning. Voltage and current of these nanogenerators were

• nanosensor. Construction of acoustic-electric conversion test platform The heart sound sensor needs to convert the signal of the heart sound into an electrical signal, requiring the sensor to meet certain requirements in terms of its acoustic and electrical conversion performance. A custom-built platform

• decibel level of the sound emitted is adjusted by regulating the amplitude of the signal generated and the power amplifier's amplification. During the electric-acoustic conversion performance test, a decibel tester is placed 1.5 cm above the heart sound sensor to control the sound pressure. Construction

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

• mean size, zeta potential, polydispersity index, and %EE of the formulation remained stable for at least six months. The hemolytic effect of the nanoparticles was insignificant compared to that of the positive lysis control. The nanoparticle formulation exhibited similar performance in vitro against T

• explain why our formulations exhibited increased performance against T. cruzi compared with other previously reported BNZ-loaded NLC. It would be interesting to study the effect of other lipids on the parasite to optimize the efficacy of the formulations based on a potential additive or synergistic effect

• was estimated by performing a high-performance liquid chromatography (HPLC) analysis of the filtrate. Considering the initial amount of BNZ added to the formulation, the EE% was calculated as follows: where M0 is the initial amount of BNZ added to the formulation, Cfree is the drug concentration of

Silver-based SERS substrates fabricated using a 3D printed microfluidic device

• Phommachith Sonexai,
• Minh Van Nguyen,
• Bui The Huy and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2023, 14, 793–803, doi:10.3762/bjnano.14.65

• and 8.21 × 103, respectively, were obtained. The detection limits for rhodamine B and melamine were estimated to be 1.94 × 10−10 M and 2.8 × 10−8 M with relative standard deviation values of 3.4% and 4.6%, respectively. The developed SERS substrate exhibits exceptional analytical performance and has

• parameter for the fabrication of the SERS substrate. The substrate with an etching time of 40 min (PS40min@Ag) exhibited the best SERS performance and thus was chosen as the optimal substrate for the subsequent tests. The influence of the Ag NP size on the SERS signals was studied. Four different sizes of

• excellent analytical performance of the PS@Ag SERS substrate, making it a promising tool for detecting environmental pollutants and ensuring food safety. Photograph of the as-fabricated droplet-based microfluidic device. Images and absorbance spectra of Ag NPs synthesized using silver nitrate and sodium

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

• catalytic performance in degrading the pollutants methyl orange and rhodamine B. The antibacterial activity of the nanocomposite is pH-dependent, related to the alterations in surface properties of the nanocomposite at different pH values. At pH 6, the nanocomposite demonstrated the highest antibacterial

• is an important topic in the field of nanotechnology. However, AgNPs synthesized in that way have a number of drawbacks such as high cost and low stability. Typically, AgNPs are loaded onto polymers/composites in order to enhance their performance in usage [4][10][12]. Among polymers, polysaccharides

• methods for their treatment [44][45]. In recent years, catalytic degradation using oxidizing and reducing agents such as H2O2 and NaBH4 has been frequently reported [46][47][48]. Plasmonic nanoscale metal particles have demonstrated enhanced catalytic performance in conjunction with NaBH4. The surface of

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

• report an in situ magnesiothermic reduction to synthesize a composite of Ge@C as an anode material for lithium-ion batteries. The obtained electrode delivered a specific capacity of 454.2 mAh·g−1 after 200 cycles at a specific current of 1000 mA·g−1. The stable electrochemical performance and good rate

• performance of the electrode (432.3 mAh·g−1 at a specific current of 5000 mA·g−1) are attributed to the enhancement in distribution and chemical contact between Ge nanoparticles and the biomass-based carbon matrix. A comparison with other synthesis routes has been conducted to demonstrate the effectiveness of

• , is a possible alternative for graphite electrodes due to its high theoretical capacity of 1623 mAh·g−1 (four times higher than that of graphite) and good rate performance due to high electronic (2.1 S·m−1, 1 × 104 times higher than that of silicon) and ionic (6.51 × 10−12 cm2·s−1, 400 times higher

Control of morphology and crystallinity of CNTs in flame synthesis with one-dimensional reaction zone

• Muhammad Hilmi Ibrahim,
• Norikhwan Hamzah,
• Mohd Zamri Mohd Yusop,
• Ni Luh Wulan Septiani and
• Mohd Fairus Mohd Yasin

Beilstein J. Nanotechnol. 2023, 14, 741–750, doi:10.3762/bjnano.14.61

• CNT functionalization for energy storage, nanosensor, and nanocomposite applications, where diameter and crystallinity are influential properties that govern the overall performance of the components. Keywords: carbon nanotubes; crystallinity; flame synthesis; morphology; one-dimensional flame

• multi-walled CNTs (MWCNTs) with carboxyl functionalization [3]. The aerospace industry utilizes CNTs with high thermal, chemical, mechanical, and electrical performance as a nanocomposite additive to overcome problems in aircraft coatings, such as corrosion, ice accretion, lightning strike, and erosion

Nanomaterials for photocatalysis and applications in environmental remediation and renewable energy

• Viet Van Pham and
• Wee-Jun Ong

Beilstein J. Nanotechnol. 2023, 14, 722–724, doi:10.3762/bjnano.14.58

• development of advanced materials based on semiconductors (i.e., carbon-modified hexagonal boron nitride (MBN), MgO@g-C3N4, and TiO2@MWCNTs) have indicated a highly efficient photocatalytic performance for phenol removal using a low-power visible LED light source. For NO degradation, a visible light source

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

• boundary may improve the photocatalytic performance of MoO3. The crystal structures of h-MoO3 and α-MoO3 The crystal structure of the hexagonal phase h-MoO3 Thermogravimetric results [23][24][25] indicate that the h-MoO3 phase releases water molecules during heat treatment, suggesting that water molecules

• Information Supporting Information File 28: Photocatalysis performance of the MoO3 samples. Acknowledgements We thank the Institutional Center for Shared Technologies and Facilities of Institute of Process Engineering, Chinese Academy of Sciences for the in situ X-ray diffraction experiments. Funding This

Humidity-dependent electrical performance of CuO nanowire networks studied by electrochemical impedance spectroscopy

• Jelena Kosmaca,
• Juris Katkevics,
• Jana Andzane,
• Raitis Sondors,
• Liga Jasulaneca,
• Raimonds Meija,
• Kiryl Niherysh,
• Yelyzaveta Rublova and
• Donats Erts

Beilstein J. Nanotechnol. 2023, 14, 683–691, doi:10.3762/bjnano.14.54

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

• antibiotics and hormones in the environment and food samples are concerning and pose a threat. Opto-electrochemical sensors have received attention due to their low cost, portability, sensitivity, analytical performance, and ease of deployment in the field as compared to conventional expensive technologies

• , high-performance MOFs as commercially viable next-generation opto-electrochemical sensor materials for the detection and monitoring of diverse analytes are discussed. Keywords: antibiotics sensing; endocrinal disorders; fluorescent sensor; hormones sensors; luminescent sensor; MOF nanohybrids

• spectrometry (LC–MS), high-performance liquid chromatography (HPLC), and gas chromatography coupled with mass spectrometry (GC–MS) have demonstrated greater selectivity and lower variability when compared to immunoassays for the measurement of antibiotics and steroid hormones in various complex samples [22][23

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

• . Photocatalytic performance of the nanopowders These experiments have been conducted in environments with low oxygen concentration. Ethanol vapors play a double role here, that is, they generate hydrogen by photodehydrogenation and also undergo oxidation to carbon dioxide and water under the action of simulated

• performance of the tested titania nanoparticles greatly differs. The TO-850-b sample exhibits the highest activity for H2 photogeneration, reaching 5 µmol H2 after 3 h of reaction. The entire sequence of TO-250-b, TO-450-b, and TO-650-b catalysts proves to have a higher activity for H2 generation than TO-250

Suspension feeding in Copepoda (Crustacea) – a numerical model of setae acting in concert

• Alexander E. Filippov,
• Wencke Krings and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 603–615, doi:10.3762/bjnano.14.50

• a basis to unravel the interplay between the feeding structures of suspension feeders, the preferred food, and the gathering performance. Additionally, it could open new avenues in the development of new filtration technologies (e.g., mucus-like filter media or bioinspired membranes) that use

• . Results and Discussion Numerical simulations In this study, we restricted ourselves to a few biologically important questions: Is there a difference in feeding performance between a system possessing only short setae near the mouth opening and a system with both types of setae, long and short ones? Which

Transferability of interatomic potentials for silicene

• Marcin Maździarz

Beilstein J. Nanotechnol. 2023, 14, 574–585, doi:10.3762/bjnano.14.48

• -relaxed with the conjugate gradient (CG) algorithm and, then, the elastic constants, Cij, were calculated for them using the stress–strain method with the maximum strain magnitude set to 10−6 [30][31]. In the z direction, a vacuum was set to 20 Å. To measure the performance of the analyzed interatomic

• dampen the out-of-plane vibration mode, and flat silicene may be produced [3]. Hence, it was decided to include also this phase in the molecular calculations. Performance of interatomic potentials Computations were carried out using molecular statics and the fourteen interatomic potentials for silicon

• , ReaxFF and MEAM2011, give the best quantitative performance measured by the total mean absolute percentage error (MAPE), see Table 6. Regarding the cost of calculations in terms of relative performance measured as normalized timesteps per second in molecular dynamics (MD) simulations, the EDIP and

ZnO-decorated SiC@C hybrids with strong electromagnetic absorption

• Liqun Duan,
• Zhiqian Yang,
• Yilu Xia,
• Xiaoqing Dai,
• Jian’an Wu and
• Minqian Sun

Beilstein J. Nanotechnol. 2023, 14, 565–573, doi:10.3762/bjnano.14.47

• is a good strategy to grow ZnO nanocrystals on the surface of SiC nanowires. The final hybrids (SiC@ZnO) showed enhanced performance, with a higher value of effective absorption bandwidth (EAB = 6.6 GHz) and lower RLmin (−42.11 dB) [16]. Growing ZnO nanocrystals on carbon materials (e.g., MWCNTs or

• graphene) may be easier because of the abundance of oxygen functional groups (e.g., carboxyl or hydroxy groups) on the carbon surface [26][31][32], in comparison to pure SiC. The introduction of carbon may help to further adjust the electromagnetic parameters and performance of SiC@ZnO nanocomposites

• and −58.1 dB, while their EAB values are 6.48 GHz (11.48–17.96 GHz) and 7.04 GHz (10.96–18.00 GHz), respectively. However, the filler loads should be increased to higher levels of 35–50 wt %. In general, SCZ1 exhibits the best performance among the samples. Its highest values of RLmin and EAB reach

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

• morphology of fabricated Ag layers examined by scanning electron microscopy (SEM). Then, we present the results of their optical properties determined using UV–vis spectroscopy. Finally, we compare the SERS performance of the GaN/Ag substrates toward 4-mercaptobenzoic acid (pMBA) molecules adsorbed on them

• absorption level for samples in a given series, it can be seen that an increase in the amount of deposited metal causes a decrease in light absorption, which is related to a decrease in surface roughness and the filling of the nanoporous GaN structure with silver. SERS performance of fabricated of GaN/Ag

Observation of multiple bulk bound states in the continuum modes in a photonic crystal cavity

• Rui Chen,
• Yi Zheng,
• Xingyu Huang,
• Qiaoling Lin,
• Chaochao Ye,
• Meng Xiong,
• Martijn Wubs,
• Yungui Ma,
• Minhao Pu and
• Sanshui Xiao

Beilstein J. Nanotechnol. 2023, 14, 544–551, doi:10.3762/bjnano.14.45

• and the computation capacity for simulation, the sizes of the cavity in simulation and experiment are different. However, the dependence of the illumination position and mode excitation efficiency are verified. A computer with higher performance to simulate a larger cavity or improving the efficiency

Nanoarchitectonics to entrap living cells in silica-based systems: encapsulations with yolk–shell and sepiolite nanomaterials

• Celia Martín-Morales,
• Jorge Fernández-Méndez,
• Pilar Aranda and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2023, 14, 522–534, doi:10.3762/bjnano.14.43

• previously encapsulated cells into yolk–shell structures feature a more continuous silica matrix with deeper cavities in which single cells are entrapped. Viability studies Viability studies have been carried out to analyse the suitability of the encapsulation by studying the performance of each

• has been studied, the poor performance in terms of desired features for a biophotocatalytic application (poor transparency and reduced long-term biological or physical stability) has led us to discard them from a more intensive study. Ethanol production of encapsulated yeast The biological production

• results only as a tentative experiment to evaluate the biocatalytic performance. However, these preliminary findings combined with the observed CO2 release from the cultures and the detection of alcohol allowed us to confirm that the encapsulated yeast produced ethanol likely faster and in higher amounts

On the use of Raman spectroscopy to characterize mass-produced graphene nanoplatelets

• Keith R. Paton,
• Konstantinos Despotelis,
• Naresh Kumar,
• Piers Turner and
• Andrew J. Pollard

Beilstein J. Nanotechnol. 2023, 14, 509–521, doi:10.3762/bjnano.14.42

• need to maximise the amount of GNP material extracted, while to maintain product quality, it is important to prevent sediment accidentally ending up in the extracted GNP fraction. To allow for a commercially viable, industrial scale-up, it is important to understand the performance of this separation

A mid-infrared focusing grating coupler with a single circular arc element based on germanium on silicon

• Xiaojun Zhu,
• Shuai Li,
• Ang Sun,
• Yongquan Pan,
• Wen Liu,
• Yue Wu,
• Guoan Zhang and
• Yuechun Shi

Beilstein J. Nanotechnol. 2023, 14, 478–484, doi:10.3762/bjnano.14.38

• sensors is of great significance. In 2015, Bai et al. reported a flexible healable transparent chemical gas sensing device that exhibited robust flexibility, good transparency, and reliable water-enabled healability of the gas sensing performance at room temperature [15]. Wang proposed a flexible

• resonance platform will further contribute to the field of biomedical sensors. We also studied the sensing performance of our proposed MIR FGC when it worked as a sensor rather than a coupler, as shown in Figure 6. When RI increases from 1 to 1.04, the peak of coupling efficiency shows a redshift from

• efficiency of the single CAE was equivalent to that of multiple CAEs, such as in focusing gratings, which could significantly reduce the production cost and complexity while keeping high coupling efficiency. In addition, the RI sensing performance of the proposed MIR grating coupler was also simulated when

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

• -performance detector, with a power of 300 W. A scanning electron microscope Hitachi SU8020 SEM (Tokyo, Japan) was used to obtain morphology information. The oxidation state and composition of the chemical elements at the surface were evaluated by X-ray photoelectron spectroscopy (XPS) (Versaprobe PHI 5000