Carbon nanotube-cellulose ink for rapid solvent identification

• Tiago Amarante,
• Thiago H. R. Cunha,
• Claudio Laudares,
• Ana P. M. Barboza,
• Ana Carolina dos Santos,
• Cíntia L. Pereira,
• Vinicius Ornelas,
• Bernardo R. A. Neves,
• André S. Ferlauto and
• Rodrigo G. Lacerda

Beilstein J. Nanotechnol. 2023, 14, 535–543, doi:10.3762/bjnano.14.44

• liquids, namely mixtures of water with low concentrations of glycerin (10 and 100 ppm) and a number of organic solvents (DI water, isopropyl alcohol, toluene, chloroform, and ethyl alcohol). To probe the limit of detection of the MFC/MWCNT composite, we performed measurements of glycerin in water at parts

• electrical responses to DI water, isopropyl alcohol, toluene, ethyl alcohol, chloroform, and acetone are shown in Figure 3a. We set the device temperature to 55 °C to prevent instantaneous evaporation of the more volatile solvents. All solvent measurements were performed on the same MFC/MWCNT transducer

• thermogravimetric analyzer. The system was monitored until the complete evaporation of the liquid, resulting in the curves shown in Figure 5a. The thermal behavior of acetone, chloroform, ethanol, and isopropyl alcohol exhibits significant similarities with the electrical curves presented in Figure 3a, especially

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

• 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

• been disinfected with alcohol and sterilized with the ultraviolet light attached to the hood. Biohybrid sepiolite–biopolymer nanocomposites materials have been prepared adapting a protocol developed in-house previously [8]. A sepiolite slurry (10% w/v clay/water) was mixed with a concentrated

Molecular nanoarchitectonics: unification of nanotechnology and molecular/materials science

• Katsuhiko Ariga

Beilstein J. Nanotechnol. 2023, 14, 434–453, doi:10.3762/bjnano.14.35

• nanoarchitectonics, Kubo and co-workers have developed room-temperature phosphorescence-active thiophene boronate ester-crosslinked polyvinyl alcohol films [93]. The films are capable of multicolor afterglow emission by changing the amount of sulforhodamine B. Molecular design and nanoarchitectonics can sometimes

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

• , in which water is further added to a homogeneous solution composed of oil, a short-chain alcohol, and water (without surfactant) [17]. Assuming that all surfactant molecules are adsorbed at the O/W interface, the diameter of the nanoemulsion droplets (excluding the hydrated surfactant layer) can be

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

• the solvent, and NH3 (Thermo Fischer Scientific Inc, Waltham, MA, USA) was used as the catalyst. Briefly, the Stöber process involves hydrolysis of an alkoxysilane precursor, such as TEOS, in alcohol (typically methanol or ethanol) in the presence of a catalyst. This is followed by ethanol or water

• hydrolysis of the alkoxysilane, Equation 4 is polymerization via alcohol condensation, and Equation 5 is polymerization via water condensation. The reaction solvent was prepared by mixing equal volumes of gradient grade (≥99.9%) ethanol (Sigma-Aldrich, MO, USA) and deionized water (or a solution of 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

• W, Cole-Parmer, United States) impulse sonication with 150 W energy for approximately 1 min by mixing Pt-coated carbon material, 5% alcohol suspension of Nafion (1100 e.w., Ion Power, United States) and double distilled water. The suspension was prepared in an airtight tube cooled with ice. The

Electrical and optical enhancement of ITO/Mo bilayer thin films via laser annealing

• Abdelbaki Hacini,
• Ahmad Hadi Ali,
• Nurul Nadia Adnan and
• Nafarizal Nayan

Beilstein J. Nanotechnol. 2022, 13, 1589–1595, doi:10.3762/bjnano.13.133

• pieces and cleaned to suit the characterization equipment. The Si substrates were ultrasonically cleaned using acetone, isopropyl alcohol, and distilled water. The glass substrates were cleaned using Decon-90 cleaner. The glass and Si samples were dried with nitrogen gas and treated for 10 min in a

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

• medium with 10% FBS and antibiotics/antimycotics in 75 cm2 flasks until 70–80% confluence. The samples for the MTT tests were prepared in the form of discs of 3 mm diameter and 0.7 mm thickness. Before testing, the samples were sterilized in 70% alcohol for two hours and washed twice with HBSS (HiMedia

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

• Nirmalendu S. Mishra and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

• taking part in the degradation mechanism. The CTA was achieved by taking 1 mmol of p-benzoquinone, isopropyl alcohol (IPA), AgNO3, and triethanolamine (TEA) as quenching agents to trap O2−•, •OH, e−, and h+, respectively [46]. The outcome of CTA was depicted in Figure 8b. The addition of TEA demonstrated

Role of titanium and organic precursors in molecular layer deposition of “titanicone” hybrid materials

• Arbresha Muriqi and
• Michael Nolan

Beilstein J. Nanotechnol. 2022, 13, 1240–1255, doi:10.3762/bjnano.13.103

• significant drawback [38]. Fumaric acid (FC) is another alcohol organic precursor that was used to deposit titanicone films using TiCl4 on an Si substrate in a temperature range of 180 °C to 350 °C. A temperature-dependent growth characteristic was observed with the growth rate decreasing from 1.10 Å/cycle at

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

• Yinglin Ma,
• Xiangyun Xiao and
• Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

• structures of molecules, steric effects, and complex interactions between moieties of the sensor layer and analytes. To study the influence of chiral moieties of calixarenes, Akpinar et al. synthesized a series of chiral calix[4]arenes bearing chiral amine and amino alcohol moieties on their upper rim and a

Application of nanoarchitectonics in moist-electric generation

• Jia-Cheng Feng and
• Hong Xia

Beilstein J. Nanotechnol. 2022, 13, 1185–1200, doi:10.3762/bjnano.13.99

• available in MEGs, such as polymers, proteins, and natural fibers, poly(4-vinylphenol) (PVP) [75], polyvinyl alcohol (PVA) [76][77], fluorinated ethylene propylene (FEP) [21], and polyvinylidene difluoride (PVDF). These materials show good performance in the application of hydropower conversion. In addition

• Using Polyvinyl Alcohol-Wrapped Dopamine/Polyvinylidene Difluoride Nanofibers”, Small, with permission from John Wiley and Sons. Copyright © 2021 WILEY-VCH GmbH. This content is not subject to CC BY 4.0. (k) MEGs in micro/nano drives. (l, m) The electrical output signal generated by the generator during

Microneedle-based ocular drug delivery systems – recent advances and challenges

• Piotr Gadziński,
• Anna Froelich,
• Monika Wojtyłko,
• Antoni Białek,
• Julia Krysztofiak and
• Tomasz Osmałek

Beilstein J. Nanotechnol. 2022, 13, 1167–1184, doi:10.3762/bjnano.13.98

• ], polyvinyl alcohol (PVA) [123], and polymethacrylates [118][124][125]. Among the biodegradable materials, carbohydrates, including maltose [126], trehalose [127], and sucrose [128], are frequently mentioned. Moreover, biodegradable polymers such as poly(lactic acid) (PLA) [129], poly(glycolic acid) (PGA

Rapid fabrication of MgO@g-C₃N₄ heterojunctions for photocatalytic nitric oxide removal

• Minh-Thuan Pham,
• Duyen P. H. Tran,
• Xuan-Thanh Bui and
• Sheng-Jie You

Beilstein J. Nanotechnol. 2022, 13, 1141–1154, doi:10.3762/bjnano.13.96

• min. Trapping experiments were performed to evaluate the photocatalytic process mechanism for NO degradation. Three trapping agents were used representing different active species, namely isopropyl alcohol (IPA) for the hydroxyl radical (•OH), potassium dichromate (K2Cr2O7) for electrons (e−), and

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

• pepper as a natural precursor was reported by Long et al. to prepare CDs via refluxing in anhydrous alcohol for 24 h. The prepared CDs exhibit dual emission at 520 and 668 nm by using the same excitation wavelength of 420 nm. The red emission around 668 nm was hardly affected by metal ions and amino

Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

• Se-Kwon Kim,
• Sesha Subramanian Murugan,
• Pandurang Appana Dalavi,
• Sebanti Gupta,
• Sukumaran Anil,
• Gi Hun Seong and
• Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

• surface area, antimicrobial activity, mechanical strength, osteoconductive and osteoinductive properties. In this particular study, the scaffolds of chitosan/polyvinyl alcohol/graphene oxide/hydroxyapatite/gold films were used in an orthopaedic application. The mechanical strength of the developed

• composites was 36.4 ± 0.7 MPa. The antibacterial activity of chitosan/polyvinyl alcohol/graphene oxide/hydroxyapatite/gold was investigated against Escherichia coli and Staphylococcus aureus with a zone of inhibition of 3–7 mm as compared to Pseudomonas aeruginosa and Enterococcus faecalis. The alkaline

Design of a biomimetic, small-scale artificial leaf surface for the study of environmental interactions

• Miriam Anna Huth,
• Axel Huth,
• Lukas Schreiber and
• Kerstin Koch

Beilstein J. Nanotechnol. 2022, 13, 944–957, doi:10.3762/bjnano.13.83

• extracted plant waxes has shown that the diverse microstructures of epicuticular waxes arise by self-assembly and that the micromorphology of wax structures is largely determined by their chemical composition [15][17][18][19][20][21][22][23]. Platelets, which mostly have a high primary alcohol content, are

Bioselectivity of silk protein-based materials and their bio-inspired applications

• Hendrik Bargel,
• Vanessa T. Trossmann,
• Christoph Sommer and
• Thomas Scheibel

Beilstein J. Nanotechnol. 2022, 13, 902–921, doi:10.3762/bjnano.13.81

Efficient liquid exfoliation of KP₁₅ nanowires aided by Hansen's empirical theory

• Zhaoxuan Huang,
• Zhikang Jiang,
• Nan Tian,
• Disheng Yao,
• Fei Long,
• Yanhan Yang and
• Danmin Liu

Beilstein J. Nanotechnol. 2022, 13, 788–795, doi:10.3762/bjnano.13.69

• previous study, we exfoliated KP15 in alcohol; however, this method was still inefficient [13]. Herein, the Hansen's empirical theory was firstly introduced to improve the liquid-phase exfoliation efficiency of KP15 nanowires. In addition, Hansen solubility parameters (HSPs) for KP15 were also obtained in

• absorption coefficient of KP15 is 3.86 ± 0.13 mL·mg−1·cm−1. We selected 20 common solvents, including benzyl benzoate, toluene, ethyl acetate, acetone, alcohol, butyrolactone, N,N'-dimethylpropyleneurea, bromobenzene, cyclopentanone, N-dodecyl-2-pyrrolidone, glycol, vinyl acetate, hexane, isopropyl alcohol

• (alcohol), respectively [13]. When the solvent mixture with a 50% volume fraction of acetone is used for stripping, the concentration of the KP15 dispersion finally increases to 0.0458 mg·mL−1. At this point, the parameter τ is close to the minimum value. The Raman result for the KP15 nanowires exfoliated

Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

• Zehao Lin,
• Zhan Yang and
• Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

• , anhydrous ethanol, acetone, barium sulfate (BaSO4), rhodamine B, isopropyl alcohol (IPA), N-methylpyrrolidone, ethylenediaminetetraacetic acid disodium salt (EDTA-2Na), silver nitrate (AgNO3), sodium sulfate (Na2SO4), ethylene glycol (EG), potassium dichromate (K2Cr2O7), phosphoric acid (H3PO4), and

A nonenzymatic reduced graphene oxide-based nanosensor for parathion

• Sarani Sen,
• Anurag Roy,
• Ambarish Sanyal and
• Parukuttyamma Sujatha Devi

Beilstein J. Nanotechnol. 2022, 13, 730–744, doi:10.3762/bjnano.13.65

• alcohol for 2 min, and finally dried in air. The as-prepared GO colloidal suspension (2 mg·mL−1) was deposited onto the surface of the pretreated GCE and dried at room temperature. The GO/GCE was submerged in 50 mM PBS, pH 4.6, for the electrochemical reduction of GO by a potentiostat technique at a

Comparative molecular dynamics simulations of thermal conductivities of aqueous and hydrocarbon nanofluids

• Adil Loya,
• Antash Najib,
• Fahad Aziz,
• Asif Khan,
• Guogang Ren and
• Kun Luo

Beilstein J. Nanotechnol. 2022, 13, 620–628, doi:10.3762/bjnano.13.54

• perspective, optimized alcohol-based nanofluids are being used in internal combustion engines. For this purpose, Cu nanoparticles have been used with ethanol, ethylene glycol, and polypropylene glycol [55]. Conclusion This study presents useful information regarding the usage of molecular dynamics simulations

Sodium doping in brookite TiO₂ enhances its photocatalytic activity

• Boxiang Zhuang,
• Honglong Shi,
• Honglei Zhang and
• Zeqian Zhang

Beilstein J. Nanotechnol. 2022, 13, 599–609, doi:10.3762/bjnano.13.52

• ]. The morphology and the chemical composition of the products were characterized by a field-emission scanning electron microscope (Hitachi S-4800) equipped with an energy-dispersive X-ray spectroscope working at 10 kV and 10 μA. Samples were dispersed into ethyl alcohol and then sprayed on a silicon

Ciprofloxacin-loaded dissolving polymeric microneedles as a potential therapeutic for the treatment of S. aureus skin infections

• Sharif Abdelghany,
• Walhan Alshaer,
• Yazan Al Thaher,
• Maram Al Fawares,
• Amal G. Al-Bakri,
• Saja Zuriekat and
• Randa SH. Mansour

Beilstein J. Nanotechnol. 2022, 13, 517–527, doi:10.3762/bjnano.13.43

• dissolving polymeric microneedles prepared by a two-layer centrifugation method as a potential treatment of skin infections such as cellulitis. The polymers used were polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP). Two formulations were investigated, namely CIP_MN1, composed of 10 mg ciprofloxacin

• results suggest that CIP_MN1 can be a potential delivery system for the treatment of S. aureus skin infections. Keywords: dissolving microneedles; microneedles; polyvinyl alcohol (PVA); polyvinylpyrrolidone (PVP); skin infection; Introduction Topical and transdermal drug delivery is a major route for

Design and characterization of polymeric microneedles containing extracts of Brazilian green propolis

• Camila Felix Vecchi,
• Rafaela Said dos Santos,
• Jéssica Bassi da Silva and
• Marcos Luciano Bruschi

Beilstein J. Nanotechnol. 2022, 13, 503–516, doi:10.3762/bjnano.13.42

• taken orally, the extracts have a strong and unpleasant taste. The aim of this work was to fabricate and characterize microneedles containing polyvinyl alcohol, polyvinylpyrrolidone, poloxamer P407, and an ethanolic or glycolic extract of PRP. Also, the obtained structures were microscopically and

• and lower toxicity [26][27]. In our previous studies, polymeric systems composed of polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), and poloxamer 407 (P407) were obtained and characterized. P407 could improve structuring and rapid dispersion of polymeric matrices, which showed promising

• from Sigma (St. Louis, MO, USA). Polyvinyl alcohol (PVA) was obtained from Neon (Sao Paulo, SP, Brazil), polyvinylpyrrolidone (PVP), and ethanol 96° GL was purchased from Labsynth (Sao Paulo, SP, Brazil). SylgardTM 184 silicone elastomers kit (polydimethylsiloxane; PDMS) was purchased from Dow (Midland