Removal of toxic heavy metals from river water samples using a porous silica surface modified with a new β-ketoenolic host

• Said Tighadouini,
• Smaail Radi,
• Abderrahman Elidrissi,
• Khadija Haboubi,
• Maryse Bacquet,
• Stéphanie Degoutin,
• Mustapha Zaghrioui and
• Yann Garcia

Beilstein J. Nanotechnol. 2019, 10, 262–273, doi:10.3762/bjnano.10.25

• . Batch experiments. The batch experiments were performed according to our published procedure [37]. Residual metal content was determined by atomic adsorption, using the following equations to determine the amount of adsorbed metal: where QM (mmol·g−1) and QW (mg·g−1) are the amount of the metal ion on

• the adsorbent. The aqueous solution volume, the weight of the adsorbent, the initial concentration of metal ion, the equilibrium metal ion concentration and the atomic weight for metals are designated by: V (L), W (g), C0 (mmol·L−1), Ce (mmol·L−1) and M (g·mol−1), respectively. The average data from

• total protonation of the active chelation sites. As the pH rises, the protonation decreases, which tends to improve the chelation and therefore the adsorption of the metal ions. At pH > 8, the metal ion concentration decreases because of their hydrolysis. Actually, the adequate pH for the maximum

Charged particle single nanometre manufacturing

• Philip D. Prewett,
• Cornelis W. Hagen,
• Claudia Lenk,
• Steve Lenk,
• Marcus Kaestner,
• Tzvetan Ivanov,
• Ahmad Ahmad,
• Ivo W. Rangelow,
• Xiaoqing Shi,
• Stuart A. Boden,
• Alex P. G. Robinson,
• Dongxu Yang,
• Sangeetha Hari,
• Marijke Scotuzzi and
• Ejaz Huq

Beilstein J. Nanotechnol. 2018, 9, 2855–2882, doi:10.3762/bjnano.9.266

• 1980s [17]. The systems used were essentially scanning ion microscopes using a liquid metal ion source (LMIS) in place of an electron emitter and electric lenses in place of magnetic coils because of the greater Lorentz force required to deflect the “stiffer” ion beam. Most of these systems used the

Nanocellulose: Recent advances and its prospects in environmental remediation

• Katrina Pui Yee Shak,
• Yean Ling Pang and
• Shee Keat Mah

Beilstein J. Nanotechnol. 2018, 9, 2479–2498, doi:10.3762/bjnano.9.232

• been used to fabricate catalysts for the reduction of 4-nitrophenol [52] and microfiltration membranes for bacteria, virus, and heavy metal ion removal [53]. In addition, bleached birch fibres from Betula verrucosa and B. pendula were also investigated in a study led by Suopajärvi et al. [54] to

ZnO-nanostructure-based electrochemical sensor: Effect of nanostructure morphology on the sensing of heavy metal ions

• Marina Krasovska,
• Vjaceslavs Gerbreders,
• Irena Mihailova,
• Andrejs Ogurcovs,
• Eriks Sledevskis,
• Andrejs Gerbreders and
• Pavels Sarajevs

Beilstein J. Nanotechnol. 2018, 9, 2421–2431, doi:10.3762/bjnano.9.227

• to cadmium ions on the surface of ZnO nanostructures. This tendency was observed for all morphologies across all concentrations of analyte. In general, it can be concluded that ZnO nanostructures with porous morphology can be used as an effective heavy metal ion sensor on the one hand, and an

Hydrothermal-derived carbon as a stabilizing matrix for improved cycling performance of silicon-based anodes for lithium-ion full cells

• Mirco Ruttert,
• Florian Holtstiege,
• Jessica Hüsker,
• Markus Börner,
• Martin Winter and
• Tobias Placke

Beilstein J. Nanotechnol. 2018, 9, 2381–2395, doi:10.3762/bjnano.9.223

• -sections were prepared by a focused ion beam (FIB) milling process using gallium ions extracted from a high brightness liquid metal ion source. Nitrogen adsorption experiments were performed on a 3Flex Physisorption device (Micromeritics GmbH) at the temperature of liquid nitrogen (−196 °C). Before the

Lead-free hybrid perovskites for photovoltaics

• Oleksandr Stroyuk

Beilstein J. Nanotechnol. 2018, 9, 2209–2235, doi:10.3762/bjnano.9.207

• nanoscale levels with respect to the performance and stability of perovskite-based solar light converters. The survey starts from HPs with lead ions partially substituted by isovalent cations of other less toxic metals, then focuses on lead-free HPs where the central metal ion is in the oxidation state of

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

• oxides: Spinel types of metal oxides with the general formula AB2O4 (where A is a divalent metal ion and B is a trivalent metal ion) possess narrow band gaps which enable them to absorb throughout the visible region [179]. In addition, these materials have a high tendency for conduction of electrons

Comparative study of antibacterial properties of polystyrene films with TiO_x and Cu nanoparticles fabricated using cluster beam technique

• Vladimir N. Popok,
• Cesarino M. Jeppesen,
• Peter Fojan,
• Anna Kuzminova,
• Jan Hanuš and
• Ondřej Kylián

Beilstein J. Nanotechnol. 2018, 9, 861–869, doi:10.3762/bjnano.9.80

• through mechanisms based on (i) metal ion selectivity (replacement of original metals leading to cellular dysfunction); (ii) metal reduction potential (generating or catalysing the formation of reactive oxygen species (ROS) damaging cellular proteins, lipids and DNA) and (iii) direct nanoparticle (NP

A review of carbon-based and non-carbon-based catalyst supports for the selective catalytic reduction of nitric oxide

• Shahreen Binti Izwan Anthonysamy,
• Syahidah Binti Afandi,
• Mehrnoush Khavarian and
• Abdul Rahman Bin Mohamed

Beilstein J. Nanotechnol. 2018, 9, 740–761, doi:10.3762/bjnano.9.68

• temperature window of 150–500 °C in a diesel engine as well as the low energy consumption and economy of NH3-SCR [9]. In the literature, abundant catalysts at low temperature have been explored such as transitional metals (Mn, Cu, Ce, Fe, Co, Mo) [10][11][12][13], novel metals (Pt, Pd) [14], and metal ion

Single-step process to improve the mechanical properties of carbon nanotube yarn

• Maria Cecilia Evora,
• Xinyi Lu,
• Nitilaksha Hiremath,
• Nam-Goo Kang,
• Kunlun Hong,
• Roberto Uribe,
• Gajanan Bhat and
• Jimmy Mays

Beilstein J. Nanotechnol. 2018, 9, 545–554, doi:10.3762/bjnano.9.52

• which electron and ion beam can be used simultaneously. The FIB is generated from a gallium liquid metal ion source with resolution of 7 nm at 30 keV acceleration voltages. The e-beam is generated from field emission gun electron source with high resolution SEM 1 nm at 15 keV and 1.9 nm at 1 keV

Anchoring of a dye precursor on NiO(001) studied by non-contact atomic force microscopy

• Sara Freund,
• Antoine Hinaut,
• Nathalie Marinakis,
• Edwin C. Constable,
• Ernst Meyer,
• Catherine E. Housecroft and
• Thilo Glatzel

Beilstein J. Nanotechnol. 2018, 9, 242–249, doi:10.3762/bjnano.9.26

• 2,2′-bipyridine (bpy). In a second step, the ligand-functionalized surface is either directly exposed to a homoleptic metal (typically copper) complex to undergo a ligand-exchange reaction to assemble a surface-bound heteroleptic dye, or is first capped with a metal ion followed by the ancillary

• ) changes to a cis-conformation upon coordination of a metal ion Mn+ (right). From large-scale imaging to atomic resolution on NiO(001). (a) Large scale topographic image of the NiO(001) crystal presenting clean terraces (scan parameters: = 4 nm, Δf1 = −30 Hz). The high-resolution topographic image (b

Tailoring the nanoscale morphology of HKUST-1 thin films via codeposition and seeded growth

• Landon J. Brower,
• Lauren K. Gentry,
• Amanda L. Napier and
• Mary E. Anderson

Beilstein J. Nanotechnol. 2017, 8, 2307–2314, doi:10.3762/bjnano.8.230

• increase the film thickness. However, the solubility of the reagents within the solution was prohibitive to investigating higher concentration. Additionally, preliminary work found that significant film formation neither occurred when copper acetate was used as the metal ion source, nor when ethanol was

• . Future experiments may investigate the effect of altering the ratio of the metal ion and organic component. Seeded growth Film morphology could be tailored by codeposition utilizing time and temperature as variables to tune the structure. While an increased film thickness was found at elevated

Evaluating the toxicity of TiO₂-based nanoparticles to Chinese hamster ovary cells and Escherichia coli: a complementary experimental and computational approach

• Alicja Mikolajczyk,
• Natalia Sizochenko,
• Ewa Mulkiewicz,
• Anna Malankowska,
• Michal Nischk,
• Przemyslaw Jurczak,
• Seishiro Hirano,
• Grzegorz Nowaczyk,
• Adriana Zaleska-Medynska,
• Jerzy Leszczynski,
• Agnieszka Gajewicz and
• Tomasz Puzyn

Beilstein J. Nanotechnol. 2017, 8, 2171–2180, doi:10.3762/bjnano.8.216

• ), platinum (Pt), or palladium (Pd) [13][14], (e) the use of dye-modified TiO2 [15][16], or (f) coupling TiO2 with other semiconductors [17][18]. In the current work, we will focus on surface modification methods. Metal-ion doped TiO2 (so-called second generation nanomaterials) may cause adverse effects not

Application of visible-light photosensitization to form alkyl-radical-derived thin films on gold

• Rashanique D. Quarels,
• Xianglin Zhai,
• Neepa Kuruppu,
• Jenny K. Hedlund,
• Ashley A. Ellsworth,
• Amy V. Walker,
• Jayne C. Garno and
• Justin R. Ragains

Beilstein J. Nanotechnol. 2017, 8, 1863–1877, doi:10.3762/bjnano.8.187

• measured using an ION TOF IV spectrometer (ION TOF Inc., Chestnut Hill, NY) equipped with a Bi liquid metal ion gun. Briefly, the spectrometer consists of three vacuum chambers each separated by a gate valve. Samples are introduced via a loadlock. The preparation and analysis chambers are maintained at ≤7

Deposition of exchange-coupled dinickel complexes on gold substrates utilizing ambidentate mercapto-carboxylato ligands

• Martin Börner,
• Laura Blömer,
• Marcus Kischel,
• Peter Richter,
• Georgeta Salvan,
• Dietrich R. T. Zahn,
• Pablo F. Siles,
• Maria E. N. Fuentes,
• Carlos C. B. Bufon,
• Daniel Grimm,
• Oliver G. Schmidt,
• Daniel Breite,
• Bernd Abel and
• Berthold Kersting

Beilstein J. Nanotechnol. 2017, 8, 1375–1387, doi:10.3762/bjnano.8.139

• (Scheme 1), L’ an ambidentate coligand, and M is a paramagnetic transition metal ion, usually MnII, FeII, CoII, or NiII [37]. The ambidentate phosphane-carboxylato [38] and thiol-carboxylato coligands H2L2 and H1L3 (Figure 1) were found to bind selectively via their carboxylate function to form the

Synthesis, spectroscopic characterization and thermogravimetric analysis of two series of substituted (metallo)tetraphenylporphyrins

• Rasha K. Al-Shewiki,
• Carola Mende,
• Roy Buschbeck,
• Pablo F. Siles,
• Oliver G. Schmidt,
• Tobias Rüffer and
• Heinrich Lang

Beilstein J. Nanotechnol. 2017, 8, 1191–1204, doi:10.3762/bjnano.8.121

• to metalloporphyrins of which the central metal ion varies on the one hand, while on the other hand these metalloporphyrins should be sterically more demanding to vary the film morphology compared to our original report [8]. In order to support the idea that different central metals as well as

Preparation of thick silica coatings on carbon fibers with fine-structured silica nanotubes induced by a self-assembly process

• Benjamin Baumgärtner,
• Hendrik Möller,
• Thomas Neumann and
• Dirk Volkmer

Beilstein J. Nanotechnol. 2017, 8, 1145–1155, doi:10.3762/bjnano.8.116

• significant influence on the morphology can be achieved by addition of metal ions. Owing to complex formation between the polyamine and the metal ions, the hierarchical structure is modified by a metal salt addition. The ratio between metal ion and ethylenimine monomer unit was set to 1:30. The hybrid silica

• of metal-ions containing LPEI aggregates, the water phase of the aqueous LPEI suspension was substituted by a copper nitrate solution and a calcium nitrate solution, respectively. The ratio between the metal ion and the ethylenimine monomer unit was set to 1:30. Modification of carbon fiber surfaces

Tuning the spin coherence time of Cu(II)−(bis)oxamato and Cu(II)−(bis)oxamidato complexes by advanced ESR pulse protocols

• Ruslan Zaripov,
• Evgeniya Vavilova,
• Iskander Khairuzhdinov,
• Kev Salikhov,
• Violeta Voronkova,
• Mohammad A. Abdulmalic,
• Francois E. Meva,
• Saddam Weheabby,
• Tobias Rüffer,
• Bernd Büchner and
• Vladislav Kataev

Beilstein J. Nanotechnol. 2017, 8, 943–955, doi:10.3762/bjnano.8.96

• which in their turn have been investigated with regard to the magnetic superexchange interactions between the Cu spins mediated by the O and N ligands [1][2][3][4][5][6][7][8]. In this context, the transfer of the spin density from the central metal ion to the ligands and next via the oxamato or

Selective detection of Mg²⁺ ions via enhanced fluorescence emission using Au–DNA nanocomposites

• Tanushree Basu,
• Khyati Rana,
• Niranjan Das and
• Bonamali Pal

Beilstein J. Nanotechnol. 2017, 8, 762–771, doi:10.3762/bjnano.8.79

• nanostructure. Keywords: Au–DNA nanocomposites; enhanced fluorescence emission; metal-ion detection; Mg2+ ion detection; Introduction The interactions between Au nanoparticles (AuNPs) and DNA are essential to classify and expand upon, given the potential applications for NP–DNA complexes such as gene therapy

• + is an essential mineral nutrient present in the environment, every cellular organism, and in many kinds of medicines. However, an excess amount of such metal is poisonous and can result in a series of health or environmental problems. Magnesium is the fourth most abundant metal ion present in nature

• samples. These, however, are time consuming and expensive. However, very little information is available regarding the optical properties and fluorescence intensity of Au–DNA nanocomposites (NCs) utilized for metal-ion sensing. The present study demonstrates (Scheme 1) how the preparation and

Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields

• Arpita Jana,
• Elke Scheer and
• Sebastian Polarz

Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74

Ion beam profiling from the interaction with a freestanding 2D layer

• Ivan Shorubalko,
• Kyoungjun Choi,
• Michael Stiefel and
• Hyung Gyu Park

Beilstein J. Nanotechnol. 2017, 8, 682–687, doi:10.3762/bjnano.8.73

• measure Ga beam profiles in dual-beam systems. As the next step, we perform similar experiments with the helium focused ion beam. He FIB has several conceptual differences compared to the Ga FIB. It is based on a gas-field ion source (GFIS) that is disparate from a liquid metal ion source for gallium

Silicon microgrooves for contact guidance of human aortic endothelial cells

• Sara Fernández-Castillejo,
• Pilar Formentín,
• Úrsula Catalán,
• Josep Pallarès,
• Lluís F. Marsal and
• Rosa Solà

Beilstein J. Nanotechnol. 2017, 8, 675–681, doi:10.3762/bjnano.8.72

• ). After developing the photoresist by immersing the wafer in the metal ion free developer AZ 726 (MicroChemicals) for 45 s, the lithographic pattern is transferred onto the oxide layer by etching the silicon in buffered hydrofluoric acid. The photoresist film is no longer needed and therefore removed with

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

• 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

• of the nanoparticles occurred. Metal ion detection We investigated the optical sensing properties of the AgNP-3MPS material via absorption spectroscopy. Each solution of AgNP-3MPS/ion was prepared in spectroscopic cuvettes that were carefully cleaned to avoid contamination. To a specific amount of

Filled and empty states of Zn-TPP films deposited on Fe(001)-p(1×1)O

• Gianlorenzo Bussetti,
• Alberto Calloni,
• Rossella Yivlialin,
• Andrea Picone,
• Federico Bottegoni and
• Marco Finazzi

Beilstein J. Nanotechnol. 2016, 7, 1527–1531, doi:10.3762/bjnano.7.146

• directly interact with the substrate [1]. A characteristic example is offered by metal-tetraphenylporphyrins (M-TPPs). These molecules have been studied in many research fields [2][3][4][5][6] because a specific change in their peripheral groups or inner metal ion can induce enormous variations in the

Tunable longitudinal modes in extended silver nanoparticle assemblies

• Serene S. Bayram,
• Klas Lindfors and
• Amy Szuchmacher Blum

Beilstein J. Nanotechnol. 2016, 7, 1219–1228, doi:10.3762/bjnano.7.113

• triggered or directed by solution conditions such as temperature, illumination, pH and metal ion concentration [21]. Amongst the various self-assembled nanostructures, silver nanoparticles (AgNPs) are of great significance due to their sharp plasmon resonance, the antimicrobial function and a distinguished