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Search for "reactivity" in Full Text gives 283 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Interface properties of nanostructured carbon-coated biological implants: an overview

  • Mattia Bartoli,
  • Francesca Cardano,
  • Erik Piatti,
  • Stefania Lettieri,
  • Andrea Fin and
  • Alberto Tagliaferro

Beilstein J. Nanotechnol. 2024, 15, 1041–1053, doi:10.3762/bjnano.15.85

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  • temperature because the higher number of phonons increases the efficiency of thermal transport [75]. NDs show also exceptional mechanical strength and low chemical reactivity, making them sound candidates for thin film coatings [76]. These properties are counterbalanced by a low electrical conductivity due to
  • reactivity of carbon coatings are the key features for the lowered immunological response. Contrary to NDs and graphene-related materials, CNT layers generally induce a strong immunological response because of their higher reactivity [98], which needs to be tuned through an appropriate functionalization
  • thickness of 12 μm. The same technique was used by Chen et al. [155] for the deposition of GO onto magnesium alloys. The authors investigated the corrosion in 0.9 wt % NaCl solution, showing beneficial effects of GO mainly due to both being a physical barrier and having a low reactivity. Similar results can
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Published 16 Aug 2024

Atomistic insights into the morphological dynamics of gold and platinum nanoparticles: MD simulations in vacuum and aqueous media

  • Evangelos Voyiatzis,
  • Eugenia Valsami-Jones and
  • Antreas Afantitis

Beilstein J. Nanotechnol. 2024, 15, 995–1009, doi:10.3762/bjnano.15.81

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  • picture of the NPs’ toxicity and reactivity emerges: Small/hot NPs are likely more toxic than their large/cold counterparts. Because of the small size of the NPs considered, the observed structural modifications are challenging to be studied by experimental techniques. The present approach can be readily
  • information regarding the toxicity and reactivity of these NPs by monitoring the behaviour of nano-descriptors commonly employed in quantitative structure–activity relationship (QSAR) models and by measuring the water–NP energetic interactions. The extracted information from our simulations complements
  • measure of surface roughness, as well as a proxy to NP reactivity, is the surface area-to-volume ratio [83]. Its variation with the NP diameter for Au (blue line) and Pt (orange line) NPs at 100 K is shown in Figure 8. In general, it is expected to be inversely proportional to where N is the number of
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Published 07 Aug 2024

Identification of structural features of surface modifiers in engineered nanostructured metal oxides regarding cell uptake through ML-based classification

  • Indrasis Dasgupta,
  • Totan Das,
  • Biplab Das and
  • Shovanlal Gayen

Beilstein J. Nanotechnol. 2024, 15, 909–924, doi:10.3762/bjnano.15.75

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  • dimensions within the range of 1 to 100 nm [2]. The diminutive size of nanoparticles contributes to a significantly high surface area with respect to volume, resulting in enhanced reactivity, improved stability, and augmented functionality. In the field of nanomaterials, ENMOs are a notable subset. These
  • because of their enhanced reactivity, large surface area, and tunable properties [7][8]. ENMOs can enter the human body [9] and engage with various biomacromolecules, including sugars, lipids, proteins, and nucleic acids. These biomolecules rapidly envelop the nanoparticle surface, creating a dynamic
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Published 22 Jul 2024

A review on the structural characterization of nanomaterials for nano-QSAR models

  • Salvador Moncho,
  • Eva Serrano-Candelas,
  • Jesús Vicente de Julián-Ortiz and
  • Rafael Gozalbes

Beilstein J. Nanotechnol. 2024, 15, 854–866, doi:10.3762/bjnano.15.71

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  • descriptor of the category “a” or “b” in our classification). Kudrinskiy et al. also modelled silver nanoparticles with different coatings without introducing directly the capping agent in the model, but only by observing the differences in size, reactivity, and electric behavior of the nanoforms with
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Published 11 Jul 2024

Exploring surface charge dynamics: implications for AFM height measurements in 2D materials

  • Mario Navarro-Rodriguez,
  • Andres M. Somoza and
  • Elisa Palacios-Lidon

Beilstein J. Nanotechnol. 2024, 15, 767–780, doi:10.3762/bjnano.15.64

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  • ratio. Moreover, their extensive surface exposure renders them highly sensitive to ambient and external influences, amplifying chemical reactivity [13] and bestowing attractive properties regarding electrochemical and catalytic reactions [14]. Furthermore, the ability to stack these materials
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Published 01 Jul 2024

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO2/graphene quantum dot-modified electrode

  • Vu Ngoc Hoang,
  • Dang Thi Ngoc Hoa,
  • Nguyen Quang Man,
  • Le Vu Truong Son,
  • Le Van Thanh Son,
  • Vo Thang Nguyen,
  • Le Thi Hong Phong,
  • Ly Hoang Diem,
  • Kieu Chan Ly,
  • Ho Sy Thang and
  • Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 719–732, doi:10.3762/bjnano.15.60

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  • , titanium alkoxides and halides are extensively used as precursors [20][21]. Because of their high reactivity, a complicate control over the reaction conditions is critical to achieve the desired crystalline structures and morphology [22]. Recently, a synthesis using stable water-soluble titanium complexes
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Published 20 Jun 2024

Laser synthesis of nanoparticles in organic solvents – products, reactions, and perspectives

  • Theo Fromme,
  • Sven Reichenberger,
  • Katharine M. Tibbetts and
  • Stephan Barcikowski

Beilstein J. Nanotechnol. 2024, 15, 638–663, doi:10.3762/bjnano.15.54

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  • thousand kelvins and pressures up to the gigapascal range that prevail during nanoparticle synthesis [58][168][169]. Furthermore, the Nernst potential is temperature-dependent, increasing the reactivity of metal precursor and formed
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Published 05 Jun 2024

Electron-induced deposition using Fe(CO)4MA and Fe(CO)5 – effect of MA ligand and process conditions

  • Hannah Boeckers,
  • Atul Chaudhary,
  • Petra Martinović,
  • Amy V. Walker,
  • Lisa McElwee-White and
  • Petra Swiderek

Beilstein J. Nanotechnol. 2024, 15, 500–516, doi:10.3762/bjnano.15.45

Graphical Abstract
  • would be converted predominantly to products that are equally non-volatile at 100 K. We note that MMA has also been reported to polymerize under electron irradiation [50]. The same reactivity is anticipated for free MA, leading to larger oligomeric products with low volatility. Electron irradiation of
  • from Fe(CO)5 (Figure 8a) is in line with the previous result [27]. However, a much smaller intensity increase and also a less pronounced attenuation of the TaNNN signal was observed when AG was performed with Fe(CO)5MA (Figure 8b), pointing to a lesser extent of thermal surface reactivity on the Fe
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Published 08 May 2024

Unveiling the nature of atomic defects in graphene on a metal surface

  • Karl Rothe,
  • Nicolas Néel and
  • Jörg Kröger

Beilstein J. Nanotechnol. 2024, 15, 416–425, doi:10.3762/bjnano.15.37

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  • similar conclusion was inferred from spatially resolved force spectroscopy across a phthalocyanine molecule on Ag(111) whose pyrrolic H atoms had been removed. Despite the bonds formed by the H-detached N atoms of the molecule with the metal substrate, an increased reactivity was reported [58]. Intact
  • graphene on Ru(0001) was previously demonstrated to exhibit locally different chemical reactivity on the basis of current-versus-distance characteristics [59]. For the second kind of defects, spatially resolved vertical-force traces are nearly identical and, therefore, do not hint at varying differences in
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Published 15 Apr 2024

Classification and application of metal-based nanoantioxidants in medicine and healthcare

  • Nguyen Nhat Nam,
  • Nguyen Khoi Song Tran,
  • Tan Tai Nguyen,
  • Nguyen Ngoc Trai,
  • Nguyen Phuong Thuy,
  • Hoang Dang Khoa Do,
  • Nhu Hoa Thi Tran and
  • Kieu The Loan Trinh

Beilstein J. Nanotechnol. 2024, 15, 396–415, doi:10.3762/bjnano.15.36

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  • reactivity because of the presence of an unpaired electron in their atomic structure. In this review, we summarize some novel metal-based nanoantioxidants and classify them into two main categories, namely chain-breaking and preventive antioxidant nanomaterials. In addition, the applications of antioxidant
  • ]. Antioxidant nanomaterials can be synthesized from carbon-based compounds, polymeric compounds, and metal-based compounds. Metal-based nanoantioxidants exhibit strong reactivity because there are atoms with unpaired electrons on the surface. Therefore, metal-based nanoantioxidants have a significant advantage
  • over natural antioxidants as well as other types of nanoantioxidants with lower reactivity and stability. As a result, metal-based nanoantioxidants have gathered significant attention from scientists. Many efforts have been made to develop new metal-based nanoantioxidants, understand the mechanisms of
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Published 12 Apr 2024
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  • “valence electron potential” (−eV) determines the elements’ reactivity and is based on the charge of the valence electrons and the ionic radius: Here, k is a proportionality factor expressing the energy of the valence electrons in electronvolts. n is the valence, and r is the ionic radius. This descriptor
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Published 12 Mar 2024

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

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  • concerns regarding the safety of nanoparticles (NPs) in relation to human and animal health. The toxicity of NPs is closely linked to their chemical aggressiveness and varies with their physicochemical properties, including surface area, charge, and reactivity. Understanding the intricate interplay between
  • reactivity, sensitivity of NPs, as well as their cellular uptake and systemic transfer [21]. However, in order to develop predictive models, a deeper understanding of the interactions at the bionano interface and their relationship to material and protein properties is necessary. Gathering more information
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Published 13 Feb 2024

A combined gas-phase dissociative ionization, dissociative electron attachment and deposition study on the potential FEBID precursor [Au(CH3)2Cl]2

  • Elif Bilgilisoy,
  • Ali Kamali,
  • Thomas Xaver Gentner,
  • Gerd Ballmann,
  • Sjoerd Harder,
  • Hans-Peter Steinrück,
  • Hubertus Marbach and
  • Oddur Ingólfsson

Beilstein J. Nanotechnol. 2023, 14, 1178–1199, doi:10.3762/bjnano.14.98

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  • the precursor decomposition and thus in the deposit formation [16]. Hence, the decomposition of the precursor molecules is not only effectuated by the primary electron beam. In fact, the reactivity of these low-energy electrons [24] may even determine the fragmentation of the precursor molecules
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Published 06 Dec 2023

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

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  • /bjnano.14.62 Abstract Metallothermic, especially magnesiothermic, solid-state reactions have been widely applied to synthesize various materials. However, further investigations regarding the use of this method for composite syntheses are needed because of the high reactivity of magnesium. Herein, we
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Published 26 Jun 2023

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

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  • . Even though this sensitive ELISA approach provided the necessary sensitivity for hormone detection in biological samples, it had a number of drawbacks, including limited specificity, high cost, cross-reactivity, and significant kit variability. The conventional ELISA method necessitates a laborious
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Published 01 Jun 2023

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

Graphical Abstract
  • [31], gene mutation identification [34][35], and investigations of the reactivity of organic monoradicals [36]. In our previous studies, nanostructured GaN platforms were coated with pure metals or alloys using magnetron sputtering (MS) in an argon atmosphere [28][29][30][31][32]. Until now, no other
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Published 03 May 2023

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

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  • graphene material with Ni-, Fe- and/or Co-based oxides/hydroxides with high chemical reactivity provides both an effective electron pathway through the catalyst [20] and high specific surface area [21], which is desirable for the OER process [13]. The overall electrocatalytic performance of the hybrid
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Published 29 Mar 2023

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

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  • temperature and reactivity. With broad applications in therapy [22][23], laser combined imaging, solar vapour generation [24], and biosensors [25], the global market for PT devices is expected to be a multimillion dollar enterprise by 2025 [26]. This review will focus on concepts such as the theoretical
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Published 27 Mar 2023

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

Graphical Abstract
  • -controlled step-growth polymerization, in which the reactivity of the patches is independent of the chain length [38]. At longer times (t > 2 h), one can observe that no longer varies linearly with time (Figure 6b). The polymerization of 2-PSN seems to follow a different pathway that is, most likely, a
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Published 06 Jan 2023

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

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  • constants and the half-lives are summarized in Table 2. Significant differences in reactivity were observed for phenol and DBMP. The dissociation constant (pKa) of DBMP is approx. 7.21, hence, almost 90% of the DBMP was dissociated at pH 8, while phenol was mainly (98%) undissociated (Figure 3). The high
  • the given reaction conditions (89% of DBMP was dissociated vs only 13% of phenol). The presence of hydroxyl radicals in the solution and a higher reactivity of phenoxide ions compared to that of undissociated forms contributed to a higher degradation efficiency of DBMP in ozonolysis. DBMP is easier to
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Published 15 Dec 2022

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

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  • glass in the HA-BG composites may stimulate the transformation of HA into tricalcium phosphate (TCP) during the sintering at high temperatures, inducing more reactivity of the material in the physiologic environment [4][20]. The HA-TCP transformation can be controlled through the glass fraction and the
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Published 12 Dec 2022

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

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  • /storage due to their reactivity, surface area, and advantageous features compared to their bulk counterparts [2][3][4]. In recent years, many efforts have increased the photocatalytic performance. However, the relative photocatalytic performance is still deficient, and it does not fulfil the criteria for
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Published 11 Nov 2022

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

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  • surfaces. This is attributed to the stronger Ti–Cl bonds in TiCl4 compared to Ti–N bonds in Ti(DMA)4. Ti(DMA)4 also shows high reactivity to the organics compared to TiCl4. Double reactions of EG and GL with the TiCl3 species from TiCl4 and TiDMA species from Ti(DMA)4 are also explored to better understand
  • Ti–N bond compared to the Ti–Cl bond and hence a higher reactivity for the Ti(DMA)4 precursor towards the surface and towards the co-reactant is expected. In addition, due to the bulky DMA ligands of Ti(DMA)4, the “reservior” effect, which is very common for small molecules such as TiCl4 [30], DEZ
  • , respectively. The results are attributed the higher reactivity of the OH group with TiCl4 in comparison to the NH2 group and the higher tendency of the heterobifunctional organic precursor to orientate in an upright configuration and avoid unwanted double reactions on the surface [42]. TiCl4 was also coupled
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Published 02 Nov 2022

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

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Published 05 Oct 2022

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

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  • effects, and carbon monoxide poisoning [16][17]. The electrocatalytic reactivity (mechanism and kinetics) of silver has similarities to that of Pt regarding the ORR performance, with considerably high onset potential, half-wave potential, current density, and number of transferred electrons. The important
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Published 26 Sep 2022
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