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Search for "chemical activity" in Full Text gives 17 result(s) in Beilstein Journal of Nanotechnology.

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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  • single 4f1 electron, which can be easily given up in a reaction with ROS. In contrast, Ce4+ nanoparticles have an octet-filled xenon configuration leading to less chemical activity. Understanding the mechanisms of metal-based nanoantioxidants is vitally important because it helps to rationally design and
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Published 12 Apr 2024

Sulfur nanocomposites with insecticidal effect for the control of Bactericera cockerelli

  • Lany S. Araujo-Yépez,
  • Juan O. Tigrero-Salas,
  • Vicente A. Delgado-Rodríguez,
  • Vladimir A. Aguirre-Yela and
  • Josué N. Villota-Méndez

Beilstein J. Nanotechnol. 2023, 14, 1106–1115, doi:10.3762/bjnano.14.91

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  • larvae, pupae, and adults of the fruit fly Drosophila melanogaster [48]. In addition, nanoencapsulated essential oils have chemical activity and increased mobility, allowing for the penetration into insect tissues through the cuticle or by ingestion through the digestive tract [49]. Essential oils are
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Published 17 Nov 2023

Relationship between corrosion and nanoscale friction on a metallic glass

  • Haoran Ma and
  • Roland Bennewitz

Beilstein J. Nanotechnol. 2022, 13, 236–244, doi:10.3762/bjnano.13.18

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  • , pitting is always distributed along a line. Wang et al. [26] found that pitting occurs preferentially at the shear offsets on a pre-deformed Zr-based MG due to the higher chemical activity of offset sites compared with the surrounding flat region. This influence of surface morphology was also shown for
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Published 18 Feb 2022

Sputtering onto liquids: a critical review

  • Anastasiya Sergievskaya,
  • Adrien Chauvin and
  • Stephanos Konstantinidis

Beilstein J. Nanotechnol. 2022, 13, 10–53, doi:10.3762/bjnano.13.2

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Published 04 Jan 2022

Gas-sensing features of nanostructured tellurium thin films

  • Dumitru Tsiulyanu

Beilstein J. Nanotechnol. 2020, 11, 1010–1018, doi:10.3762/bjnano.11.85

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  • were interpreted in terms of an increase in disorder (amorphization), leading to an increase in the surface chemical activity of chalcogenides, as well as an increase in the active surface area due to substrate porosity. Keywords: gas-sensing properties; NO2; tellurium thin films; nanocrystalline
  • increase in the chemical activity of chalcogenides at the surface when disorder (amorphization) increases [32][33] and to the increase in the active area caused by substrate porosity. Another interesting feature observed in the experiments was the spontaneous reduction (or sometimes increase) in the gas
  • with nanocrystalline Te films. In addition, there is an increase in the gas sensitivity by 15%/ppm. These achievements can be attributed to two main factors: the increase in chemical activity of chalcogenides at the surface due to increase in disordering (amorphization) and an increase in the active
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Published 10 Jul 2020

Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers

  • Stefanie Schlicht,
  • Korcan Percin,
  • Stefanie Kriescher,
  • André Hofer,
  • Claudia Weidlich,
  • Matthias Wessling and
  • Julien Bachmann

Beilstein J. Nanotechnol. 2020, 11, 952–959, doi:10.3762/bjnano.11.79

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  • inherently different chemical activity. It simply means that the combination of a large specific surface area generated by anodization with a controlled deposition inside the nanoscale pores presents the catalytically active surface in a particularly advantageous manner. Catalyst stability The combination of
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Published 22 Jun 2020

Synthesis of hafnium nanoparticles and hafnium nanoparticle films by gas condensation and energetic deposition

  • Irini Michelakaki,
  • Nikos Boukos,
  • Dimitrios A. Dragatogiannis,
  • Spyros Stathopoulos,
  • Costas A. Charitidis and
  • Dimitris Tsoukalas

Beilstein J. Nanotechnol. 2018, 9, 1868–1880, doi:10.3762/bjnano.9.179

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  • the sensitivity of gas sensors [12], twinned silver NPs show important different chemical activity compared to their single crystalline counterparts [13]. These and many other examples illustrate that investigating the morphology and structure of metal NPs is essential for their efficient utilization
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Published 27 Jun 2018

Bioinspired self-healing materials: lessons from nature

  • Joseph C. Cremaldi and
  • Bharat Bhushan

Beilstein J. Nanotechnol. 2018, 9, 907–935, doi:10.3762/bjnano.9.85

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  • differentiates, it loses parts of its potency, becoming pluripotent. The differentiation pathway decisions from the cell depend on several environmental characteristics, including mechanical stresses, the chemical environment of the extracellular matrix, and chemical activity and (cell–cell) interactions with
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Published 19 Mar 2018

In situ controlled rapid growth of novel high activity TiB2/(TiB2–TiN) hierarchical/heterostructured nanocomposites

  • Jilin Wang,
  • Hejie Liao,
  • Yuchun Ji,
  • Fei Long,
  • Yunle Gu,
  • Zhengguang Zou,
  • Weimin Wang and
  • Zhengyi Fu

Beilstein J. Nanotechnol. 2017, 8, 2116–2125, doi:10.3762/bjnano.8.211

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  • and TiN, respectively. Additionally, a thermogravimetric and differential scanning calorimetry analyzer (TG-DSC) comparison analysis indicated that the as-synthesized samples presented better chemical activity than that of commercial TiB2 powders. Finally, the possible chemical reactions as well as
  • the proposed growth mechanism of the TiB2/(TiB2–TiN) hierarchical/heterostructured nanocomposites were further discussed. Keywords: chemical activity; hierarchical/heterostructures; self-propagating high-temperature synthesis; TiB2; TiN; Introduction Refractory materials such as borides, nitrides
  • , microstructure and chemical activity of the as-synthesized products were investigated in detail by various characterization methods. In addition, further comparative experiments were carried out to study the relation between the endothermic reaction rate and the morphology/microstructure/composition of the
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Published 10 Oct 2017

Characterization of ferrite nanoparticles for preparation of biocomposites

  • Urszula Klekotka,
  • Magdalena Rogowska,
  • Dariusz Satuła and
  • Beata Kalska-Szostko

Beilstein J. Nanotechnol. 2017, 8, 1257–1265, doi:10.3762/bjnano.8.127

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  • nanoparticles with nominal composition Me0.5Fe2.5O4 (Me = Co, Fe, Ni or Mn) have been successfully prepared by the wet chemical method. The obtained particles have a mean diameter of 11–16 ± 2 nm and were modified to improve their magnetic properties and chemical activity. The surface of the pristine
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Published 13 Jun 2017

Monolayer graphene/SiC Schottky barrier diodes with improved barrier height uniformity as a sensing platform for the detection of heavy metals

  • Ivan Shtepliuk,
  • Jens Eriksson,
  • Volodymyr Khranovskyy,
  • Tihomir Iakimov,
  • Anita Lloyd Spetz and
  • Rositsa Yakimova

Beilstein J. Nanotechnol. 2016, 7, 1800–1814, doi:10.3762/bjnano.7.173

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  • pollution induced by hazardous heavy metals is a great challenge for global sustainability. In this respect, it is of vital importance to propose and comprehensively investigate a real-time sensing platform using an eco-friendly material, with high chemical activity and tunable intrinsic electronic
  • is graphene [14]. Due to its large surface area (2600 m2/g) [15], high chemical activity [16] and exceptionally high signal-to-noise ratio [17], graphene provides a rich platform for surface chemistry and the desirable conditions for detection of heavy metals because of the strong sensitivity of its
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Published 22 Nov 2016

Role of solvents in the electronic transport properties of single-molecule junctions

  • Katharina Luka-Guth,
  • Sebastian Hambsch,
  • Andreas Bloch,
  • Philipp Ehrenreich,
  • Bernd Michael Briechle,
  • Filip Kilibarda,
  • Torsten Sendler,
  • Dmytro Sysoiev,
  • Thomas Huhn,
  • Artur Erbe and
  • Elke Scheer

Beilstein J. Nanotechnol. 2016, 7, 1055–1067, doi:10.3762/bjnano.7.99

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  • of unstable curves revealing kinks or high scatter is very low, reflecting the low chemical activity of Mes. Therefore, a relatively high number of the remaining S-shaped symmetric curves, roughly 20%, can be described well by the SM and by the SLM simultaneously. In our study most of the S-shaped
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Published 22 Jul 2016

Synthesis and applications of carbon nanomaterials for energy generation and storage

  • Marco Notarianni,
  • Jinzhang Liu,
  • Kristy Vernon and
  • Nunzio Motta

Beilstein J. Nanotechnol. 2016, 7, 149–196, doi:10.3762/bjnano.7.17

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  • can help to reduce the GO in order to remove the oxygen groups with a resulting increase in the conductivity and a tuning of the intrinsic properties from insulating to semiconducting [104]. As compared with pristine graphene, GO presents enhanced chemical activity because of the presence of a large
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Published 01 Feb 2016

Tattoo ink nanoparticles in skin tissue and fibroblasts

  • Colin A. Grant,
  • Peter C. Twigg,
  • Richard Baker and
  • Desmond J. Tobin

Beilstein J. Nanotechnol. 2015, 6, 1183–1191, doi:10.3762/bjnano.6.120

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  • is widely acknowledged that nanoparticles have higher levels of chemical activity than their larger particle equivalents. However, assessment of the toxicity of tattoo inks has been the subject of little research and ink manufacturers are not obliged to disclose the exact composition of their
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Published 20 May 2015

Characterization of 10,12-pentacosadiynoic acid Langmuir–Blodgett monolayers and their use in metal–insulator–metal tunnel devices

  • Saumya Sharma,
  • Mohamad Khawaja,
  • Manoj K. Ram,
  • D. Yogi Goswami and
  • Elias Stefanakos

Beilstein J. Nanotechnol. 2014, 5, 2240–2247, doi:10.3762/bjnano.5.233

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  • analysis of PDA has proved useful in understanding the chemical activity, such as the oxidation–reduction reactions, as well as their reversibility. Cyclic voltammetry was performed on PDA films deposited onto ITO-coated glass substrates in order to gain qualitative information about the electrochemical
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Published 26 Nov 2014

Photoactivation of luminescence in CdS nanocrystals

  • Valentyn Smyntyna,
  • Bogdan Semenenko,
  • Valentyna Skobeeva and
  • Nikolay Malushin

Beilstein J. Nanotechnol. 2014, 5, 355–359, doi:10.3762/bjnano.5.40

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  • isolated in a polymer matrix is a significant chemical activity of the surface. It is important to experimentally investigate the nanosystems with interphase boundaries between the nanocrystal and matrix and study the processes that occur at this interface. There are particularly important questions about
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Published 25 Mar 2014

Defects in oxide surfaces studied by atomic force and scanning tunneling microscopy

  • Thomas König,
  • Georg H. Simon,
  • Lars Heinke,
  • Leonid Lichtenstein and
  • Markus Heyde

Beilstein J. Nanotechnol. 2011, 2, 1–14, doi:10.3762/bjnano.2.1

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  • different atoms and metal clusters. Furthermore, a particular chemical activity at the APDBs has been experimentally verified. For instance, nitric oxide decomposition on thin film aluminum oxide preferentially takes place at the APDBs [52]. It has been predicted by means of DFT calculations [47] that
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Published 03 Jan 2011
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