Search results

Search for "heavy metal" in Full Text gives 42 result(s) in Beilstein Journal of Nanotechnology.

Influence of the thickness of an antiferromagnetic IrMn layer on the static and dynamic magnetization of weakly coupled CoFeB/IrMn/CoFeB trilayers

  • Deepika Jhajhria,
  • Dinesh K. Pandya and
  • Sujeet Chaudhary

Beilstein J. Nanotechnol. 2018, 9, 2198–2208, doi:10.3762/bjnano.9.206

Graphical Abstract
  • . There are theoretical studies that suggest the possibility of manipulating the AF moment by spin transfer torque [12][13][14]. Only recently, FM/AF (NiO, IrMn)/heavy metal heterostructures have been extensively studied to demonstrate the efficient spin current transfer across the AF layer mediated by AF
PDF
Album
Full Research Paper
Published 20 Aug 2018

Cr(VI) remediation from aqueous environment through modified-TiO2-mediated photocatalytic reduction

  • Rashmi Acharya,
  • Brundabana Naik and
  • Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 1448–1470, doi:10.3762/bjnano.9.137

Graphical Abstract
  • their extraction. Hence, removal of toxic heavy metal ions from wastewater is considered as one of the most important environmental issues worldwide. Among the toxic heavy metals, chromium has been a major environmental concern in wastewater treatment. It exists in various oxidation states starting from
  • chemical synthesis Photocatalytic, selective, organic transformations are currently preferred over the conventional processes for synthesis of fine chemicals basically due to two reasons. The first one is to restrict the use of environmentally detrimental chemical reagents such as heavy metal catalysts
  • for degradation of pollutants was first applied by Frank and Bard in 1977 to reduce CN− in water [57][58]. Thereafter, significant research on photocatalytic degradation of hazardous organic compounds and reduction of toxic heavy metal ions (Cr(VI)) was carried out over various semiconductors upon
PDF
Album
Review
Published 16 May 2018

Colorimetric detection of Cu2+ based on the formation of peptide–copper complexes on silver nanoparticle surfaces

  • Gajanan Sampatrao Ghodake,
  • Surendra Krishna Shinde,
  • Rijuta Ganesh Saratale,
  • Avinash Ashok Kadam,
  • Ganesh Dattatraya Saratale,
  • Asad Syed,
  • Fuad Ameen and
  • Dae-Young Kim

Beilstein J. Nanotechnol. 2018, 9, 1414–1422, doi:10.3762/bjnano.9.134

Graphical Abstract
  • present above certain concentrations [1]. Copper is a widely distributed heavy metal in water bodies, as a result of direct dumping of industrial and mining waste and electronic waste [2][3]. Cu2+ has been used excessively in the form of copper sulfate and copper hydroxide as a fungicide, algaecide, and
PDF
Album
Full Research Paper
Published 15 May 2018

Heavy-metal detectors based on modified ferrite nanoparticles

  • Urszula Klekotka,
  • Ewelina Wińska,
  • Elżbieta Zambrzycka-Szelewa,
  • Dariusz Satuła and
  • Beata Kalska-Szostko

Beilstein J. Nanotechnol. 2018, 9, 762–770, doi:10.3762/bjnano.9.69

Graphical Abstract
  • Abstract In this work, we analyze artificial heavy-metal solutions with ferrite nanoparticles. Measurements of adsorption effectiveness of different kinds of particles, pure magnetite or magnetite doped with calcium, cobalt, manganese, or nickel ions, were carried out. A dependence of the adsorption
  • Mn0.5Fe2.5O4 was selected for discussion. The highest heavy-metal adsorption capability and universality was observed for SA as a surface modifier. Keywords: ferrite nanoparticles; heavy metal detection; materials characterization; water purification; Introduction Many research reports show that magnetic
  • damage. Changing the package color informs that food is not suitable for consumption because either its expiry date passed or packed edibles started to emit harmful compounds [9]. Recent studies show that nanoparticles can be widely used as heavy-metal detectors. Among others, silver [10][11], gold [12
PDF
Album
Full Research Paper
Published 28 Feb 2018

L-Lysine-grafted graphene oxide as an effective adsorbent for the removal of methylene blue and metal ions

  • Yan Yan,
  • Jie Li,
  • Fangbei Kong,
  • Kuankuan Jia,
  • Shiyu He and
  • Baorong Wang

Beilstein J. Nanotechnol. 2017, 8, 2680–2688, doi:10.3762/bjnano.8.268

Graphical Abstract
  • of graphene materials. According to this analysis, we tried to synthesize a novel graphene material for the removal of heavy metal ions and organic dyes from wastewater. In 2013, Gao et al. developed an environmentally friendly approach to reduce GO with L-lysine [10], which showed potential
PDF
Album
Full Research Paper
Published 13 Dec 2017

Spin-chemistry concepts for spintronics scientists

  • Konstantin L. Ivanov,
  • Alexander Wagenpfahl,
  • Carsten Deibel and
  • Jörg Matysik

Beilstein J. Nanotechnol. 2017, 8, 1427–1445, doi:10.3762/bjnano.8.143

Graphical Abstract
  • coupling is usually of lesser importance, unless the hyperfine interaction is strongly suppressed (e.g. in C60, which lacks the protons and contains 99% 12C, having zero nuclear spin [87]) or heavy metal atoms are present as part of the molecule or by doping [86][88]. An MFE can also be observed by
PDF
Album
Review
Published 11 Jul 2017

The longstanding challenge of the nanocrystallization of 1,3,5-trinitroperhydro-1,3,5-triazine (RDX)

  • Florent Pessina and
  • Denis Spitzer

Beilstein J. Nanotechnol. 2017, 8, 452–466, doi:10.3762/bjnano.8.49

Graphical Abstract
  • micrometer-sized agglomerates. CTA is a promising primary explosive compliant with the new REACH legislation [32] forbidding the use of heavy-metal-based materials. Further investigation with surfactants might lead to smaller particles by counteracting the high viscosity of molten droplets. Milling Redner et
PDF
Album
Supp Info
Review
Published 17 Feb 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

Graphical Abstract
  • in the G09 package [54]. The binding energy of interacting systems were calculated based on the following relationship: where Egr-nHM is the total energy of the interacting graphene–heavy metal system, Egr is the total energy of the isolated graphene flake, EHM is the total energy of an individual
  • heavy metal atom or ion and n is the total number of interacting heavy metal atoms or ions. To avoid the basis set superposition error (BSSE), the binding energies were calculated by means of counterpoise method [55]. The most important parameter that was extracted from our calculation, the work
  • concentration of the heavy metals, since these dependences may provide useful information concerning the detection limit. With this aim, we simulated the adsorption processes on a 2 × 2 graphene flake. At the first stage, one heavy metal atom was placed on the graphene surface. We then optimized the resulting
PDF
Album
Full Research Paper
Published 22 Nov 2016

Hydrophilic silver nanoparticles with tunable optical properties: application for the detection of heavy metals in water

  • Paolo Prosposito,
  • Federico Mochi,
  • Erica Ciotta,
  • Mauro Casalboni,
  • Fabio De Matteis,
  • Iole Venditti,
  • Laura Fontana,
  • Giovanna Testa and
  • Ilaria Fratoddi

Beilstein J. Nanotechnol. 2016, 7, 1654–1661, doi:10.3762/bjnano.7.157

Graphical Abstract
  • ), zeta potential (ζ-potential) measurements and scanning tunneling microscopy (STM). Further, to demonstrate the environmental application of our AgNPs, we also applied them for heavy metal sensing by detecting visible color modification due to SPR spectral changes. We found that these negatively charged
  • AgNPs show good response to nickel (II) and presented good sensibility properties for the detection of low amount of ions in water in the working range of 1.0–0.1 ppm. Keywords: heavy metal sensor; nickel (II); optical materials; optical sensors; silver nanoparticles; Introduction Nanomaterials have
  • selective sensors for the detection of very low amounts of heavy metal ions from biological and environmental samples has greatly increased [26]. The metal-ion toxicity depends on their physical state, chemical form as well as the oxidation state. Many groups have studied fluorescent chemosensors with
PDF
Album
Full Research Paper
Published 09 Nov 2016

Time-dependent growth of crystalline Au0-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

  • Liz M. Rösken,
  • Felix Cappel,
  • Susanne Körsten,
  • Christian B. Fischer,
  • Andreas Schönleber,
  • Sander van Smaalen,
  • Stefan Geimer,
  • Christian Beresko,
  • Georg Ankerhold and
  • Stefan Wehner

Beilstein J. Nanotechnol. 2016, 7, 312–327, doi:10.3762/bjnano.7.30

Graphical Abstract
  • the electron dense background caused by the heavy metal stained biomass. Such tiny, nearly spherical nanoparticles have already a volume of more than 30 nm3 (1 nm3 crystalline gold contains around 60 gold atoms). From TEM images an average nanoparticle concentration inside the cells can be determined
PDF
Album
Supp Info
Full Research Paper
Published 02 Mar 2016

Carbon nano-onions (multi-layer fullerenes): chemistry and applications

  • Juergen Bartelmess and
  • Silvia Giordani

Beilstein J. Nanotechnol. 2014, 5, 1980–1998, doi:10.3762/bjnano.5.207

Graphical Abstract
  • CNO in environmental remediation was studied by Li group [54], who revealed that surface-oxidized CNO in aqueous suspensions have a high sorption capacity for heavy metal ions such as Pb2+, Cu2+, Cd2+, Ni2+ and Zn2+. The sorption capacity of oxidized CNOs was found to be up to ten times higher than
  • the one of fullerene C60. These encouraging results could be a first step toward in situ remediation of heavy metal contaminants. Electronic applications Capacitors: Carbon materials are commonly used as electrode materials in capacitors, but the first study probing CNOs as electrode materials in
PDF
Album
Review
Published 04 Nov 2014

Growth evolution and phase transition from chalcocite to digenite in nanocrystalline copper sulfide: Morphological, optical and electrical properties

  • Priscilla Vasthi Quintana-Ramirez,
  • Ma. Concepción Arenas-Arrocena,
  • José Santos-Cruz,
  • Marina Vega-González,
  • Omar Martínez-Alvarez,
  • Víctor Manuel Castaño-Meneses,
  • Laura Susana Acosta-Torres and
  • Javier de la Fuente-Hernández

Beilstein J. Nanotechnol. 2014, 5, 1542–1552, doi:10.3762/bjnano.5.166

Graphical Abstract
  • cadmium, such as cadmium telluride, CdTe, or cadmium sulfide, CdS, have been widely investigated regarding their application in the optoelectronic field, mainly in photovoltaic devices due to the semiconducting, electronic and optical properties [1][2][3][4][5]. Cadmium is a toxic heavy metal, which
PDF
Album
Supp Info
Full Research Paper
Published 15 Sep 2014

Current state of laser synthesis of metal and alloy nanoparticles as ligand-free reference materials for nano-toxicological assays

  • Christoph Rehbock,
  • Jurij Jakobi,
  • Lisa Gamrad,
  • Selina van der Meer,
  • Daniela Tiedemann,
  • Ulrike Taylor,
  • Wilfried Kues,
  • Detlef Rath and
  • Stephan Barcikowski

Beilstein J. Nanotechnol. 2014, 5, 1523–1541, doi:10.3762/bjnano.5.165

Graphical Abstract
  • nanoscopic wear debris [6][7][8] which have been reported to accumulate in lymph nodes, bone marrow, liver and spleen [9]. In that context toxicological effects, including impaired DNA replication and cell growth as well as inflammatory responses, are meant to originate from release of toxic heavy metal ions
PDF
Album
Video
Review
Published 12 Sep 2014

Pyrite nanoparticles as a Fenton-like reagent for in situ remediation of organic pollutants

  • Carolina Gil-Lozano,
  • Elisabeth Losa-Adams,
  • Alfonso F.-Dávila and
  • Luis Gago-Duport

Beilstein J. Nanotechnol. 2014, 5, 855–864, doi:10.3762/bjnano.5.97

Graphical Abstract
  • disulfide, in the absence of trace compounds founds in natural pyrite. Our kinetics analysis showed that the pyrite nanoparticles enabled a ca. 8 times greater efficiency of pollutant removal than did the microparticles. The use of synthetic pyrite nanoparticles avoids the dangers of heavy metal release
PDF
Album
Full Research Paper
Published 16 Jun 2014

Injection of ligand-free gold and silver nanoparticles into murine embryos does not impact pre-implantation development

  • Ulrike Taylor,
  • Wiebke Garrels,
  • Annette Barchanski,
  • Svea Peterson,
  • Laszlo Sajti,
  • Andrea Lucas-Hahn,
  • Lisa Gamrad,
  • Ulrich Baulain,
  • Sabine Klein,
  • Wilfried A. Kues,
  • Stephan Barcikowski and
  • Detlef Rath

Beilstein J. Nanotechnol. 2014, 5, 677–688, doi:10.3762/bjnano.5.80

Graphical Abstract
  • effects were observed after AgNP injection, silver ion dissolution seems to be either significantly reduced or the ions are deactivated after injection into the embryo. This could be caused by the aforementioned proteins, which are known to deactivate heavy metal ions by complexation. Since no such
PDF
Album
Full Research Paper
Published 21 May 2014

Self-assembled monolayers and titanium dioxide: From surface patterning to potential applications

  • Yaron Paz

Beilstein J. Nanotechnol. 2011, 2, 845–861, doi:10.3762/bjnano.2.94

Graphical Abstract
  • eventually, following secondary reactions, gives stable molecules such as CO2 and water [5][6]. Nevertheless, it was shown that some halo-organics [7][8] and highly toxic heavy-metal ions such as Cr(VI) [9][10] could be degraded reductively by photoinduced electrons. Langmuir–Hinshelwood type kinetics is
PDF
Album
Review
Published 20 Dec 2011

Novel acridone-modified MCM-41 type silica: Synthesis, characterization and fluorescence tuning

  • Maximilian Hemgesberg,
  • Gunder Dörr,
  • Yvonne Schmitt,
  • Andreas Seifert,
  • Zhou Zhou,
  • Robin Klupp Taylor,
  • Sarah Bay,
  • Stefan Ernst,
  • Markus Gerhards,
  • Thomas J. J. Müller and
  • Werner R. Thiel

Beilstein J. Nanotechnol. 2011, 2, 284–292, doi:10.3762/bjnano.2.33

Graphical Abstract
  • molar ratios of the precursors in the sol–gel process are to be investigated in the near future. Furthermore, efforts will be made to elucidate the optical properties of the materials after doping with lanthanides or heavy metal cations, e.g. Eu(III), Er(III) or Bi(III). Experimental General: All
PDF
Album
Full Research Paper
Published 09 Jun 2011
Other Beilstein-Institut Open Science Activities