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Search for "physicochemical" in Full Text gives 275 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Coordination-assembled myricetin nanoarchitectonics for sustainably scavenging free radicals

  • Xiaoyan Ma,
  • Haoning Gong,
  • Kenji Ogino,
  • Xuehai Yan and
  • Ruirui Xing

Beilstein J. Nanotechnol. 2022, 13, 284–291, doi:10.3762/bjnano.13.23

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  • activity for maintaining redox homeostasis in cells. Physicochemical characterization of MZG nanoparticles. (a) TEM image. (b) DLS profile of MZG nanoparticles. (c) UV–vis absorbance spectra of Myr dissolved in (0.1 M NaOH), Myr/Zn2+ complex, GSH, and MZG (equivalent concentration of Myr: 20 μg·mL−1). (d
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Published 01 Mar 2022

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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  • corrosion on nanoscale friction. The evolution of friction upon repeated scanning cycles on the corroded surfaces reveals a bilayer surface oxide film, of which the outer layer is removed by the scanning tip. The measurement of friction and adhesion allows one to compare the physicochemical processes of
  • inner layer, which involves two physicochemical processes. Metal cations are generated at the interface between the inner and outer layer by the dissolution of the inner layer oxides and the metal substrate and then diffuse away from the interface. In the case of immersion, the constant small adhesion
  • experiences, thus, a higher plowing resistance. The outer layer grows by precipitation of metal hydrates, which are formed when dissolved metal ions diffuse towards the solution. This growth of the outer layer involves the three physicochemical processes depicted in Figure 5d, which have been invoked to
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Published 18 Feb 2022

Engineered titania nanomaterials in advanced clinical applications

  • Padmavati Sahare,
  • Paulina Govea Alvarez,
  • Juan Manual Sanchez Yanez,
  • Gabriel Luna-Bárcenas,
  • Samik Chakraborty,
  • Sujay Paul and
  • Miriam Estevez

Beilstein J. Nanotechnol. 2022, 13, 201–218, doi:10.3762/bjnano.13.15

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  • review aims to present a comprehensive and up-to-date overview of TiO2-based nanotherapeutics and the corresponding future challenges. Keywords: clinical application; nanostructures; physicochemical; theranostics; titanium dioxide (TiO2); Introduction Nanomaterials can be described as any organic
  • . The advancement of this novel inorganic nanomaterial in theranostic nanomedicine might lead to an era of technology that can be used in real-world clinical settings. Review Effect of physicochemical properties of TiO2 on biocompatibility Biocompatibility is considered as one of the most important
  • considered as a valuable antimicrobial agent due to its photocatalytic activity and self-cleaning properties. Several factors might affect the physicochemical properties of TiO2 nps. Crystal structure and shape are the most critical factors responsible for their antimicrobial property [76]. TiO2 has
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Published 14 Feb 2022

Theoretical understanding of electronic and mechanical properties of 1T′ transition metal dichalcogenide crystals

  • Seyedeh Alieh Kazemi,
  • Sadegh Imani Yengejeh,
  • Vei Wang,
  • William Wen and
  • Yun Wang

Beilstein J. Nanotechnol. 2022, 13, 160–171, doi:10.3762/bjnano.13.11

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  • /bjnano.13.11 Abstract Transition metal dichalcogenides (TMDs) with a 1T′ layer structure have recently received intense interest due to their outstanding physical and chemical properties. While the physicochemical behaviors of 1T′ TMD monolayers have been widely investigated, the corresponding properties
  • of layered 1T′ TMD crystals have rarely been studied. As TMD monolayers do not have interlayer interactions, their physicochemical properties will differ from those of layered TMD materials. In this study, the electronic and mechanical characteristics of a range of 1T′ TMDs are systematically
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Published 02 Feb 2022

A comprehensive review on electrospun nanohybrid membranes for wastewater treatment

  • Senuri Kumarage,
  • Imalka Munaweera and
  • Nilwala Kottegoda

Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10

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  • different physicochemical properties of the solvents, such as the electrical conductivity, inherent viscosity of the polymers, and the difference of solubility parameters of the solvent and the polymer [36]. Moreover, they have reported that entanglement concentrations of the polymers varied significantly
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Published 31 Jan 2022

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

  • Viet Van Pham,
  • Hong-Huy Tran,
  • Thao Kim Truong and
  • Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

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  • reports still proposed its photocatalytic behaviors partly based on •O2− species via the combination of experimental physicochemical analyses, such as electron spin resonance (ESR) spectroscopy, active species trapping experiments, valence band X-ray photoelectron spectroscopy (XPS), and diffuse
  • [47]. Surface and defect states Structural defects and lattice imperfections usually bestow most of the properties exploited for applications of SnO2 materials as they influence various physicochemical properties and reactions on the surface. Most important are defect states of materials, including
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Published 21 Jan 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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  • misunderstanding of physicochemical basics of this technique. For this purpose, a presentation of the underlying processes leading to NP production is first provided. This part is constituted of a brief introduction to (i) sputtering and (ii) the kinetics of NP nucleation and growth in solutions. Then, the
  • physicochemical characteristics is required for their applications in various fields on the industrial scale [15]. Generally, methods employed for the synthesis of NPs follow either the “top-down” or the “bottom-up” routes. On the one hand, in the “top-down” approach, a destructive technology is employed. The
  • gauge, the electric power supply, and the gas inlets. Sputtering processes have been studied and developed for a long time [7][8] and have been implemented in the coating industry to deposit nanometer-scale films onto various solid substrates. Such functional coatings must have tailored physicochemical
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Published 04 Jan 2022

Chemical vapor deposition of germanium-rich CrGex nanowires

  • Vladislav Dřínek,
  • Stanislav Tiagulskyi,
  • Roman Yatskiv,
  • Jan Grym,
  • Radek Fajgar,
  • Věra Jandová,
  • Martin Koštejn and
  • Jaroslav Kupčík

Beilstein J. Nanotechnol. 2021, 12, 1365–1371, doi:10.3762/bjnano.12.100

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  • even replace them due to their better physicochemical properties. However, while research on plenty of metal silicides is already underway, we are only at the beginning with germanides. For example, CuSix has been studied extensively for some time. There is even an important application of copper
  • chromium silicide/germanide. CrSix has been described in tens of publications and at least some properties of it are known and classified. However, only few CrGex publications have been published so far. Although silicon and germanium as representatives of group-IV elements possess similar physicochemical
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Published 07 Dec 2021

Identifying diverse metal oxide nanomaterials with lethal effects on embryonic zebrafish using machine learning

  • Richard Liam Marchese Robinson,
  • Haralambos Sarimveis,
  • Philip Doganis,
  • Xiaodong Jia,
  • Marianna Kotzabasaki,
  • Christiana Gousiadou,
  • Stacey Lynn Harper and
  • Terry Wilkins

Beilstein J. Nanotechnol. 2021, 12, 1297–1325, doi:10.3762/bjnano.12.97

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  • (i.e., depending on the exposure medium) physicochemical characteristics [18][19][20]. However, concerns have been raised regarding the human health relevance of the endpoints modelled in many nano-QSAR studies [21]. There is a need for models that can predict human safety relevant endpoints
  • University), with minimal, clearly documented, variations in experimental conditions, and were linked to comparable physicochemical characterisation data. However, the first published modelling studies of NBI Knowledgebase data treated the characterisation data, used as input to predictive models, in a
  • simple fashion [23][27]. Specifically, in addition to using other qualitative and quantitative physicochemical characteristics (such as average primary particle size), these studies only used the names of chemical components, that is, the core, surface functional groups (FGs) or the shell, as descriptors
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Published 29 Nov 2021

Irradiation-driven molecular dynamics simulation of the FEBID process for Pt(PF3)4

  • Alexey Prosvetov,
  • Alexey V. Verkhovtsev,
  • Gennady Sushko and
  • Andrey V. Solov’yov

Beilstein J. Nanotechnol. 2021, 12, 1151–1172, doi:10.3762/bjnano.12.86

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  • electrons emitted from a SiO2 substrate were used to simulate electron-induced formation and growth of metal nanostructures after deposition of W(CO)6 precursors on SiO2. Investigation of the physicochemical phenomena that govern the formation and growth of nanostructures coupled to radiation is a complex
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Published 13 Oct 2021

Self-assembly of Eucalyptus gunnii wax tubules and pure ß-diketone on HOPG and glass

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

Beilstein J. Nanotechnol. 2021, 12, 939–949, doi:10.3762/bjnano.12.70

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  • used to study their recrystallization by SEM and AFM. Experimental Substrates used for recrystallization Recrystallization experiments of a wax solution and a ß-diketone solution were done on two substrates with different physicochemical properties. Glass microscope coverslips were used as polar
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Published 20 Aug 2021

The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

  • Nabojit Das,
  • Akash Kumar and
  • Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69

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  • utilizing safe nanomaterials for advanced biomedical and clinical applications. Keywords: anisotropic nanoparticles; carrageenan; cytotoxicity; eutectic solvents; surfactants; Review Introduction Plasmonic metals such as gold and silver, upon achieving nanoscale dimensions, exhibit unusual physicochemical
  • in biomedical research is gaining attention due to their plasmonic/optical properties. However, in vitro cytotoxicity assessment of these nanomaterials is a prerequisite for further in vivo validation and subsequent clinical trials. The physicochemical properties of a nanoparticle such as size, shape
  • nanoparticles than for spherical shapes. This is due to greater exposed surface area and more defects during crystal growth of anisotropic nanoparticles. Gold nanoparticles show tremendous potential in biomedical research due to unique optical and physicochemical properties and the inert nanoparticle core. The
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Published 18 Aug 2021

Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications

  • Sepand Tehrani Fateh,
  • Lida Moradi,
  • Elmira Kohan,
  • Michael R. Hamblin and
  • Amin Shiralizadeh Dezfuli

Beilstein J. Nanotechnol. 2021, 12, 808–862, doi:10.3762/bjnano.12.64

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  • materials that can undergo specific structural changes, for instance, protonation, cleavage, or conformational changes after exposure to certain stimuli which trigger the release of the cargo [3]. The physicochemical properties of these systems can be changed when triggered by environmental stimuli, such as
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Published 11 Aug 2021

Physical constraints lead to parallel evolution of micro- and nanostructures of animal adhesive pads: a review

  • Thies H. Büscher and
  • Stanislav N. Gorb

Beilstein J. Nanotechnol. 2021, 12, 725–743, doi:10.3762/bjnano.12.57

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  • affinity to substrata with various physicochemical properties (hydrophilic and hydrophobic). In other words, the fluid may be a kind of coupling agent, promoting and strengthening the adhesion between otherwise incompatible materials by providing the proximity of contact for intermolecular forces. At a
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Published 15 Jul 2021

Fate and transformation of silver nanoparticles in different biological conditions

  • Barbara Pem,
  • Marija Ćurlin,
  • Darija Domazet Jurašin,
  • Valerije Vrček,
  • Rinea Barbir,
  • Vedran Micek,
  • Raluca M. Fratila,
  • Jesus M. de la Fuente and
  • Ivana Vinković Vrček

Beilstein J. Nanotechnol. 2021, 12, 665–679, doi:10.3762/bjnano.12.53

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  • Silver (nano) that insufficient data on AgNP physicochemical properties and toxicology in cosmetics hinder the health hazards caused by AgNPs [5]. Earlier, the Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR) raised questions on how different forms of Ag used in consumer and
  • medical products may be related to human exposure and safety as AgNPs may undergo complex transformations in biological media [6]. It is well known that AgNP physicochemical characteristics, such as size, shape, surface charge, surface functionalization, or core composition determine their interactions
  • absorption spectroscopy (GF-AAS), nuclear magnetic resonance (NMR) spectroscopy, and transmission electron microscopy (TEM) experiments. Physicochemical characteristics of freshly prepared AgNPs Freshly prepared AgNPs coated with PVP, sodium bis(2-ethylhexyl)sulfosuccinate (AOT), and poly(ʟ-lysine) (PLL
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Published 07 Jul 2021

Nanoporous and nonporous conjugated donor–acceptor polymer semiconductors for photocatalytic hydrogen production

  • Zhao-Qi Sheng,
  • Yu-Qin Xing,
  • Yan Chen,
  • Guang Zhang,
  • Shi-Yong Liu and
  • Long Chen

Beilstein J. Nanotechnol. 2021, 12, 607–623, doi:10.3762/bjnano.12.50

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  • multiple kind of acceptors, for example, D–A–A can improve the HER compared with simple D–A structures. (2) Incorporating heteroatoms, such as N, S, and O, into the polymer backbone can effectively modulate the physicochemical properties of the polymers. (3) Attaching side chains or functional groups, such
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Published 30 Jun 2021

The preparation temperature influences the physicochemical nature and activity of nanoceria

  • Robert A. Yokel,
  • Wendel Wohlleben,
  • Johannes Georg Keller,
  • Matthew L. Hancock,
  • Jason M. Unrine,
  • D. Allan Butterfield and
  • Eric A. Grulke

Beilstein J. Nanotechnol. 2021, 12, 525–540, doi:10.3762/bjnano.12.43

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  • engineered nanomaterials prepared by many methods that result in products with varying physicochemical properties and applications. Those used industrially are often calcined, an example is NM-212. Other nanoceria have beneficial pharmaceutical properties and are often prepared by solvothermal synthesis
  • treatment of nanoceria can produce significant differences in solubility and surface cerium valence, which affect the biological and catalytic properties of nanoceria. Keywords: cerium; dissolution; nanoparticles; physicochemical properties; valence state; Introduction The long-term fate of engineered
  • nanomaterials (ENMs), which could profoundly influence their biological effects, is not well understood. After uptake into phagolysosomes, which have a pH value of ca. 4.5, there is the potential for dissolution, changing the physicochemical, and potentially the biological, identity of ENMs. Nanoceria are a
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Published 04 Jun 2021

A review on nanostructured silver as a basic ingredient in medicine: physicochemical parameters and characterization

  • Gabriel M. Misirli,
  • Kishore Sridharan and
  • Shirley M. P. Abrantes

Beilstein J. Nanotechnol. 2021, 12, 440–461, doi:10.3762/bjnano.12.36

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  • , triangular plates, hexagonal plates, pyramids, and cubes depending on the synthesis method used, as depicted in Figure 1. Moreover, they all have specific characteristics, both from the physicochemical and biomedical application points of view [33]. The unique chemical and physical properties of AgNPs are
  • aggregation, physicochemical or biological synthesis methods used, chemical nature of the coating, surface charge, and free Ag+ content. The quality control of AgNPs is necessary to guarantee their suitability for the intended use, reproducibility, efficacy, and low toxicity [146]. Another important point is
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Published 14 May 2021

The impact of molecular tumor profiling on the design strategies for targeting myeloid leukemia and EGFR/CD44-positive solid tumors

  • Nikola Geskovski,
  • Nadica Matevska-Geshkovska,
  • Simona Dimchevska Sazdovska,
  • Marija Glavas Dodov,
  • Kristina Mladenovska and
  • Katerina Goracinova

Beilstein J. Nanotechnol. 2021, 12, 375–401, doi:10.3762/bjnano.12.31

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  • without ligands, in a healthy murine model. Even though the authors reported an organ distribution of nearly 20% per gram in the BM, most of the porous silicon particles were entrapped in the spleen, liver, and lungs, because of their size and surface characteristics. In this case, the physicochemical
  • conventional treatment protocols due to unfavorable physicochemical and pharmacokinetic properties, nanotechnology offers strategies for targeting a variety of leukemia cell populations. Even though liquid tumors mainly reside in the blood circulation and seem readily available for chemotherapy, the
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Published 29 Apr 2021

Characterization, bio-uptake and toxicity of polymer-coated silver nanoparticles and their interaction with human peripheral blood mononuclear cells

  • Sahar Pourhoseini,
  • Reilly T. Enos,
  • Angela E. Murphy,
  • Bo Cai and
  • Jamie R. Lead

Beilstein J. Nanotechnol. 2021, 12, 282–294, doi:10.3762/bjnano.12.23

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  • nanoparticles; toxicity; uptake; Introduction Nanotechnology is a rapidly-growing industry that creates nanoscale products with novel physicochemical properties [1]. Nanoparticles (NPs) are particles with at least one dimension between 1 and 100 nm, which gives them unique properties for innovative
  • /synthesis characterization, to examine the physicochemical transformations of NPs during the exposure time in the exposure medium, and/or to use physiologically relevant Ag concentrations. Therefore, the purpose of this study was to investigate the uptake and toxicity of well-characterized AgNPs in primary
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Published 24 Mar 2021

Differences in surface chemistry of iron oxide nanoparticles result in different routes of internalization

  • Barbora Svitkova,
  • Vlasta Zavisova,
  • Veronika Nemethova,
  • Martina Koneracka,
  • Miroslava Kretova,
  • Filip Razga,
  • Monika Ursinyova and
  • Alena Gabelova

Beilstein J. Nanotechnol. 2021, 12, 270–281, doi:10.3762/bjnano.12.22

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  • carrier, are the most frequently used materials for biomedical applications [17][18][19][20]. The impact of the surface chemistry on the mechanism of nanoparticle uptake has not been sufficiently clarified yet. MNPs with comparable basic physicochemical characteristics (e.g., particle size, surface charge
  • FITC–clathrin was measured in A549 cells exposed to CavME inhibitors (i.e., F and N). Discussion The internalization of nanoparticles is a dynamic energy-dependent and highly regulated process, affected by physicochemical characteristics of nanoparticles (e.g., shape, size, surface chemistry, and
  • distinct pathway(s) underlying cellular uptake and the parameters influencing this process is of great importance for the design of new tailored nanovectors for different cells/tissues in biomedical applications. It is well documented that the physicochemical parameters of nanoparticles substantially
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Published 23 Mar 2021

A review on the biological effects of nanomaterials on silkworm (Bombyx mori)

  • Sandra Senyo Fometu,
  • Guohua Wu,
  • Lin Ma and
  • Joan Shine Davids

Beilstein J. Nanotechnol. 2021, 12, 190–202, doi:10.3762/bjnano.12.15

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  • their attractive physicochemical properties and their antimicrobial applications [142][143], and research reports have indicated that Ag NPs are lethal to bacteria and other pathogens [142][143][144][145]. Aside from the antimicrobial applications of Ag NPs, Govindaraju et al. [146] reported that an
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Published 12 Feb 2021

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

  • Sina Kaabipour and
  • Shohreh Hemmati

Beilstein J. Nanotechnol. 2021, 12, 102–136, doi:10.3762/bjnano.12.9

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  • physicochemical characteristics of AgNPs can be tuned in a way to avoid cellular toxicity [71][74][75], which facilitates their biomedical applications. The small size of AgNPs (<100 nm) allows them to accumulate on the extracellular membrane of the bacteria and penetrate inside, which alters the membrane
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Published 25 Jan 2021

The role of gold atom concentration in the formation of Cu–Au nanoparticles from the gas phase

  • Yuri Ya. Gafner,
  • Svetlana L. Gafner,
  • Darya A. Ryzkova and
  • Andrey V. Nomoev

Beilstein J. Nanotechnol. 2021, 12, 72–81, doi:10.3762/bjnano.12.6

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  • oxidation of benzyl alcohol to benzaldehyde and in the epoxidation of propene with nitrous oxide. Moreover, in experimental and theoretical works [9], it was clearly shown that the partial substitution of copper with gold leads to a change in the physicochemical properties in many cases. For example, there
  • formed under clear nonequilibrium conditions with a dependence on the physicochemical properties of the nanoparticle determined by its size. In this paper, we present the results of a computer simulation study of the condensation process of gold and copper atoms. For the modeling, we used the molecular
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Published 19 Jan 2021

Unravelling the interfacial interaction in mesoporous SiO2@nickel phyllosilicate/TiO2 core–shell nanostructures for photocatalytic activity

  • Bridget K. Mutuma,
  • Xiluva Mathebula,
  • Isaac Nongwe,
  • Bonakele P. Mtolo,
  • Boitumelo J. Matsoso,
  • Rudolph Erasmus,
  • Zikhona Tetana and
  • Neil J. Coville

Beilstein J. Nanotechnol. 2020, 11, 1834–1846, doi:10.3762/bjnano.11.165

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  • nanostructures are attractive candidates for photocatalysis owing to their tunable physicochemical properties, their interfacial contact effects, and their efficacy in charge-carrier separation. This study reports, for the first time, on the synthesis of mesoporous silica@nickel phyllosilicate/titania (mSiO2
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Published 09 Dec 2020
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