Search results

Search for "adsorbate" in Full Text gives 119 result(s) in Beilstein Journal of Nanotechnology.

The impact of crystal size and temperature on the adsorption-induced flexibility of the Zr-based metal–organic framework DUT-98

  • Simon Krause,
  • Volodymyr Bon,
  • Hongchu Du,
  • Rafal E. Dunin-Borkowski,
  • Ulrich Stoeck,
  • Irena Senkovska and
  • Stefan Kaskel

Beilstein J. Nanotechnol. 2019, 10, 1737–1744, doi:10.3762/bjnano.10.169

Graphical Abstract
  • , known to be a rather weakly interacting adsorbate, cannot initiate a structural contraction in downsized crystals of DUT-98. The contraction mechanism in DUT-98(1) was previously shown to depend on pore shrinkage along a reorganization of water molecules within the structure close to the Zr cluster [23
PDF
Album
Supp Info
Full Research Paper
Published 20 Aug 2019

Warped graphitic layers generated by oxidation of fullerene extraction residue and its oxygen reduction catalytic activity

  • Machiko Takigami,
  • Rieko Kobayashi,
  • Takafumi Ishii,
  • Yasuo Imashiro and
  • Jun-ichi Ozaki

Beilstein J. Nanotechnol. 2019, 10, 1391–1400, doi:10.3762/bjnano.10.137

Graphical Abstract
  • equation. The decrease in the heat of adsorption activated the adsorbed state of oxygen molecules. However, lowering the heat too much led to a small interaction between the adsorbent and the adsorbate (i.e., less activation). Further evidence for the changes in the surface properties due to WGL exposure
PDF
Album
Full Research Paper
Published 12 Jul 2019

Pure and mixed ordered monolayers of tetracyano-2,6-naphthoquinodimethane and hexathiapentacene on the Ag(100) surface

  • Robert Harbers,
  • Timo Heepenstrick,
  • Dmitrii F. Perepichka and
  • Moritz Sokolowski

Beilstein J. Nanotechnol. 2019, 10, 1188–1199, doi:10.3762/bjnano.10.118

Graphical Abstract
  • the screen. The LEED images displayed here were numerically enhanced in contrast. The simulated LEED patterns were calculated according to kinematic theory taking into account the presence of different symmetry-equivalent domains of the adsorbate. The STM images were recorded at RT using Pt/Ir tips in
  • intermolecular interactions compared to a commensurate structure. Briefly speaking, this is due to the fact that the lattice of the adsorbate and the substrate have less common Fourier components and that the energy gain related to the interfacial interactions is thus smaller [33]. STM images (Figure 4c) show
  • orientation of the TNAP molecule is rather similar in both structures. Because the pure HTPEN phase is commensurate, while the pure TNAP phase is of the point-on-line type, we propose that the stronger adsorbate/substrate interaction of the HTPEN is responsible for the commensurability of second order of the
PDF
Album
Supp Info
Full Research Paper
Published 06 Jun 2019

Serum type and concentration both affect the protein-corona composition of PLGA nanoparticles

  • Katrin Partikel,
  • Robin Korte,
  • Dennis Mulac,
  • Hans-Ulrich Humpf and
  • Klaus Langer

Beilstein J. Nanotechnol. 2019, 10, 1002–1015, doi:10.3762/bjnano.10.101

Graphical Abstract
  • adsorptive capacity of the adsorbent for the adsorbate under examination and was calculated for the adsorption of serum proteins on PLGA NPs. SDS-PAGE analysis of corona proteins After protein adsorption and the last centrifugation step the pellet was resuspended under shaking (1200 rpm, 22 °C) in 30 µL
PDF
Album
Supp Info
Full Research Paper
Published 06 May 2019

On the transformation of “zincone”-like into porous ZnO thin films from sub-saturated plasma enhanced atomic layer deposition

  • Alberto Perrotta,
  • Julian Pilz,
  • Stefan Pachmajer,
  • Antonella Milella and
  • Anna Maria Coclite

Beilstein J. Nanotechnol. 2019, 10, 746–759, doi:10.3762/bjnano.10.74

Graphical Abstract
  • the Lorentz–Lorenz relationship and calculated as: where Vads is the volume of the liquid adsorptive in pores, B0 and Bs are the volume polarizability of the film before and during adsorption, Bt is the volume polarizability of the adsorbate multilayer that develops on top of the layer, d0 and dt are
  • the thickness of the layer and the adsorbate multilayer, respectively, Vmol is the molecular volume of the adsorptive, and αads is the polarizability of the adsorptive molecule. If swelling occurs, dt is ignored in the equation and only the layer thickness is taken into account, as reported in [49
PDF
Album
Supp Info
Full Research Paper
Published 21 Mar 2019

The effect of translation on the binding energy for transition-metal porphyrines adsorbed on Ag(111) surface

  • Luiza Buimaga-Iarinca and
  • Cristian Morari

Beilstein J. Nanotechnol. 2019, 10, 706–717, doi:10.3762/bjnano.10.70

Graphical Abstract
  • in this model. The chemisorptive contributions to the TMPP–metal binding energy may lead to a charge transfer between molecule and surface [41]. This constitutes a local perturbation for electronic, structural [42][43] and magnetic [44][45] properties of the adsorbate as well as of the substrate
  • a qualitative picture of the dynamics of the adsorbate on the surface as well as hints on the self-assembly and formation of covalently bonded structures. Differences in binding energies are an indicator of how easy the molecules change their positions on the surface in order to produce self
  • another, it will play an important role in the dynamics of the adsorbate on the surface. Electronic structure and magnetic properties We start our discussion with the magnetic properties of the adsorbed molecules. We found that the magnetic moments are stable with respect to a change in the position of
PDF
Album
Supp Info
Full Research Paper
Published 13 Mar 2019

Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)

  • Miguel A. Andrés,
  • Clemence Sicard,
  • Christian Serre,
  • Olivier Roubeau and
  • Ignacio Gascón

Beilstein J. Nanotechnol. 2019, 10, 654–665, doi:10.3762/bjnano.10.65

Graphical Abstract
  • . CO2 was used as an adsorbate and its concentration into the chamber was controlled with He as a diluting gas. A total gas flow of 50 mL (STP)·min−1 was used in all the experiments and each gas flow was controlled separately using an Alicat Scientific MC-100SCCM-D/5M mass-flow controller. Prior to each
PDF
Album
Supp Info
Full Research Paper
Published 06 Mar 2019

A carrier velocity model for electrical detection of gas molecules

  • Ali Hosseingholi Pourasl,
  • Sharifah Hafizah Syed Ariffin,
  • Mohammad Taghi Ahmadi,
  • Razali Ismail and
  • Niayesh Gharaei

Beilstein J. Nanotechnol. 2019, 10, 644–653, doi:10.3762/bjnano.10.64

Graphical Abstract
  • withdrawing functional molecule. If the adsorbate is a donor, the value of the Mulliken charge must be positive; if it is negative, it is an acceptor molecule. According to Table 1, NO shows acceptor and CO shows donor properties [34][35][36]. The band structure analysis can further explain the gas
  • between the adsorbate and AGNR by introducing the hopping integral parameter (t′), was formulated. Then, the molecular adsorption effect on the carrier velocity was investigated in the form of current–voltage properties. The DFT calculations study was performed to further investigate gas molecule
PDF
Album
Full Research Paper
Published 04 Mar 2019

Quantification and coupling of the electromagnetic and chemical contributions in surface-enhanced Raman scattering

  • Yarong Su,
  • Yuanzhen Shi,
  • Ping Wang,
  • Jinglei Du,
  • Markus B. Raschke and
  • Lin Pang

Beilstein J. Nanotechnol. 2019, 10, 549–556, doi:10.3762/bjnano.10.56

Graphical Abstract
  • plasmon resonances of the nanostructured metal surface when excited by incident light. The generally weaker chemical enhancement mechanism (CE) is thought to be associated with electronic interactions such as charge redistribution, hybridization, or other interactions between molecular adsorbate and the
  • dependent on the local atomic environment of the adsorbate. Optical properties, such as the locations of the optical transitions, oscillator strengths, and homogeneous linewidths, are also critical for molecule–metal complex systems [29]. With improved knowledge of the resonance characteristics and
PDF
Album
Supp Info
Full Research Paper
Published 25 Feb 2019

Polymorphic self-assembly of pyrazine-based tectons at the solution–solid interface

  • Achintya Jana,
  • Puneet Mishra and
  • Neeladri Das

Beilstein J. Nanotechnol. 2019, 10, 494–499, doi:10.3762/bjnano.10.50

Graphical Abstract
  • means of split-image technique [21] in which both the adsorbate layer and the substrate are recorded with molecular and atomic resolution, respectively, in a single frame. The details of calibration and correction of STM images is given in the section 5 of Supporting Information File 1. A 5 μL droplet
PDF
Album
Supp Info
Full Research Paper
Published 18 Feb 2019

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

Graphical Abstract
  • of adsorbent to be determined at equilibrium. The Langmuir isotherm model, which considers all adsorbent sites to be at equal energy with no adsorbent/adsorbate interactions, is one of the most popular. The non-linearized form of the Langmuir isotherm equation is given below [64][65]: Where qe is the
PDF
Album
Full Research Paper
Published 23 Jan 2019

New micro/mesoporous nanocomposite material from low-cost sources for the efficient removal of aromatic and pathogenic pollutants from water

  • Emmanuel I. Unuabonah,
  • Robert Nöske,
  • Jens Weber,
  • Christina Günter and
  • Andreas Taubert

Beilstein J. Nanotechnol. 2019, 10, 119–131, doi:10.3762/bjnano.10.11

Graphical Abstract
  • deactivate bacteria by damaging its cell membrane and DNA [50]. It is known that electrostatic adsorbent–adsorbate interactions do occur in solution at pH values either above or below the pHpzc of the adsorbent [51]. Based on the latter, it is believed that the composite adsorbent material in this study does
PDF
Album
Supp Info
Full Research Paper
Published 09 Jan 2019

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

Graphical Abstract
  • nanoplates), whereas the lowest sensitivity corresponded to ZnO nanorods with a large diameter (i.e., low surface-to-volume ratio). The efficiency of sedimentation is also related to the electronegativity of adsorbate: it has been shown that all observed ZnO morphologies exhibited significantly higher
  • compounds with adsorbate than bonds, which are located on nonpolar surfaces. It follows from the experiments that, in concentrated solutions, the CV measurements clearly reflect the process quality, whereas in the low concentration range, the measurements show poor sensitivity. Differential pulse
  • effectiveness of sedimentation is directly related to the electronegativity of the adsorbate: substances with higher electronegativity form stronger bonds with the ZnO surface and exceed the monolayer range. This was supported by the fact that a significantly better adsorption of lead ions was observed compared
PDF
Album
Full Research Paper
Published 11 Sep 2018

SERS active Ag–SiO2 nanoparticles obtained by laser ablation of silver in colloidal silica

  • Cristina Gellini,
  • Francesco Muniz-Miranda,
  • Alfonso Pedone and
  • Maurizio Muniz-Miranda

Beilstein J. Nanotechnol. 2018, 9, 2396–2404, doi:10.3762/bjnano.9.224

Graphical Abstract
  • and transmission electron microscopy (TEM). The SERS efficiency was tested by adsorption of 2,2'-bipyridine as a molecular reporter, whose SERS spectrum was interpreted by DFT, in order to gain information on the adsorbate and the interaction of the molecule with the metal surface. To our knowledge
PDF
Album
Supp Info
Full Research Paper
Published 06 Sep 2018

The role of adatoms in chloride-activated colloidal silver nanoparticles for surface-enhanced Raman scattering enhancement

  • Nicolae Leopold,
  • Andrei Stefancu,
  • Krisztian Herman,
  • István Sz. Tódor,
  • Stefania D. Iancu,
  • Vlad Moisoiu and
  • Loredana F. Leopold

Beilstein J. Nanotechnol. 2018, 9, 2236–2247, doi:10.3762/bjnano.9.208

Graphical Abstract
  • silver metal surface. Moreover, the SERS effect is switched on only after the electronic coupling of the adsorbate to the silver surface at SERS-active sites. The experiments presented in this study highlight the SERS-activating role played by ions such as Cl−, Ag+, Mg2+ or Ca2+, which is a process that
  • added to metal colloids to enhance the Raman signal of the analytes. This phenomenon can be explained by two distinct mechanisms: the electromagnetic mechanism and the chemical effect. Each mechanism is believed to contribute complementary to the Raman scattering enhancement of the adsorbate in SERS
  • surfaces has also been proposed by Muniz-Miranda and Sbrana [18]. In contrast to the electromagnetic mechanism, the chemical effect requires an electronic contact between adsorbate and metal surface [14]. The enhancement factor for the chemical effect is estimated to be between 10–100 [8]. In this study
PDF
Album
Supp Info
Full Research Paper
Published 22 Aug 2018

Recent highlights in nanoscale and mesoscale friction

  • Andrea Vanossi,
  • Dirk Dietzel,
  • Andre Schirmeisen,
  • Ernst Meyer,
  • Rémy Pawlak,
  • Thilo Glatzel,
  • Marcin Kisiel,
  • Shigeki Kawai and
  • Nicola Manini

Beilstein J. Nanotechnol. 2018, 9, 1995–2014, doi:10.3762/bjnano.9.190

Graphical Abstract
  • theoretical understanding for the pinning/depinning transition, a systematic experimental investigation of how the relevant physical parameters (such as lattice mismatch, substrate-interaction strength, adsorbate rigidity, driving force, and temperature) influence the frictional response, e.g., from a
PDF
Album
Review
Published 16 Jul 2018

SO2 gas adsorption on carbon nanomaterials: a comparative study

  • Deepu J. Babu,
  • Divya Puthusseri,
  • Frank G. Kühl,
  • Sherif Okeil,
  • Michael Bruns,
  • Manfred Hampe and
  • Jörg J. Schneider

Beilstein J. Nanotechnol. 2018, 9, 1782–1792, doi:10.3762/bjnano.9.169

Graphical Abstract
  • the total amount of SO2 adsorbed [46]. The higher SO2 uptake observed for VACNTs is consistent with the reports of enhanced N2 and H2 uptake observed for aligned CNTs [47][48][49]. The heat of adsorption gives a quantitative estimate of the interaction between the adsorbate and the adsorbent. In the
PDF
Album
Supp Info
Full Research Paper
Published 13 Jun 2018

Free-radical gases on two-dimensional transition-metal disulfides (XS2, X = Mo/W): robust half-metallicity for efficient nitrogen oxide sensors

  • Chunmei Zhang,
  • Yalong Jiao,
  • Fengxian Ma,
  • Sri Kasi Matta,
  • Steven Bottle and
  • Aijun Du

Beilstein J. Nanotechnol. 2018, 9, 1641–1646, doi:10.3762/bjnano.9.156

Graphical Abstract
  • energy), Eads is calculated according to where Etot is the total energy with adsorbed NOx after geometry optimization of the adsorbate; Egas is the energy of the adsorbed NOx molecule after geometry optimization, and is the energy of 3 × 3 monolayer XS2 supercell. Results and Discussion We focus our
  • NO2 are free radical gas molecules with a magnetic moment of 1µB. To fully understand the NOx adsorption mechanism, it is important to understand the interactions between the monolayer and the adsorbate molecules. Investigations [8][28] revealed that charge transfer occurs from the XS2 (X = Mo, W
PDF
Album
Supp Info
Full Research Paper
Published 05 Jun 2018

Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system

  • Karolline A. S. Araujo,
  • Luiz A. Cury,
  • Matheus J. S. Matos,
  • Thales F. D. Fernandes,
  • Luiz G. Cançado and
  • Bernardo R. A. Neves

Beilstein J. Nanotechnol. 2018, 9, 963–974, doi:10.3762/bjnano.9.90

Graphical Abstract
  • , with photohole–adsorbate recombination at the RA/graphene interface. In summary, the present work may promote new strategies in both organic electronics and 2D material applications due to potential interfacial-induced improvements within their hybrid systems. Experimental High-purity graphite flakes
PDF
Album
Supp Info
Full Research Paper
Published 23 Mar 2018

Cyclodextrin inhibits zinc corrosion by destabilizing point defect formation in the oxide layer

  • Abdulrahman Altin,
  • Maciej Krzywiecki,
  • Adnan Sarfraz,
  • Cigdem Toparli,
  • Claudius Laska,
  • Philipp Kerger,
  • Aleksandar Zeradjanin,
  • Karl J. J. Mayrhofer,
  • Michael Rohwerder and
  • Andreas Erbe

Beilstein J. Nanotechnol. 2018, 9, 936–944, doi:10.3762/bjnano.9.86

Graphical Abstract
  • the EIS measurements a quantitative comparison of the efficiencies is not reasonable. In situ spectroscopic ellipsometry experiments conducted both in 0.1 M KCl as well as in 0.1 M KCl with 5.3 mM β-CD show no formation of an adsorbate layer on the samples (Supporting Information File 1, Figure S6
PDF
Album
Supp Info
Full Research Paper
Published 20 Mar 2018

Towards the third dimension in direct electron beam writing of silver

  • Katja Höflich,
  • Jakub Mateusz Jurczyk,
  • Katarzyna Madajska,
  • Maximilian Götz,
  • Luisa Berger,
  • Carlos Guerra-Nuñez,
  • Caspar Haverkamp,
  • Iwona Szymanska and
  • Ivo Utke

Beilstein J. Nanotechnol. 2018, 9, 842–849, doi:10.3762/bjnano.9.78

Graphical Abstract
  • adsorbate-limited deposition regime. Dependent on the actual dwell time of the beam, co-dissociation of non-desorbed ligands as well as of residual carbon hydrates from the vacuum background is expected. Figure 2 displays results for a dwell time series using a 150 pA beam for both precursor compounds. The
  • upper rows in Figure 2a,b show SEM images of the deposits from AgO2Me2Bu and AgO2F5Prop for dwell times increasing from 100 ns up to 5 µs. The chosen dwell time range covers the typical time scale for electron-limited and adsorbate-limited depletion regimes. For the case of AgO2Me2Bu, the SEM images in
PDF
Album
Letter
Published 08 Mar 2018

Synthesis and characterization of two new TiO2-containing benzothiazole-based imine composites for organic device applications

  • Anna Różycka,
  • Agnieszka Iwan,
  • Krzysztof Artur Bogdanowicz,
  • Michal Filapek,
  • Natalia Górska,
  • Damian Pociecha,
  • Marek Malinowski,
  • Patryk Fryń,
  • Agnieszka Hreniak,
  • Jakub Rysz,
  • Paweł Dąbczyński and
  • Monika Marzec

Beilstein J. Nanotechnol. 2018, 9, 721–739, doi:10.3762/bjnano.9.67

Graphical Abstract
  • characteristic for mesoporous materials. As can be seen in Figure 1a, this isotherm possesses a characteristic feature of a hysteresis loop, which is the consequence of adsorbate condensation in TiO2 pores. The limiting adsorption at the high pressure close to 1.0 p/p0 results in a plateau of the isotherm
  • explained by the phenomenon of the capillary condensation that occurs when titanium dioxide is exposed to the adsorbate. According to the BET method of calculation, the investigated titanium dioxide is characterized by a surface area of 59.5 m2/g. Its structure is a combination of both mesopores (defined in
  • . Characterization techniques The surface area and porosity analyzer by Micromeritics (ASAP2020) was used to obtain the physical parameters of titanium dioxide. The experiment was carried out at liquid nitrogen temperature, using nitrogen as an adsorbate. Prior to the measurements, the sample was precisely weighed
PDF
Album
Full Research Paper
Published 26 Feb 2018

Dynamics and fragmentation mechanism of (C5H4CH3)Pt(CH3)3 on SiO2 surfaces

  • Kaliappan Muthukumar,
  • Harald O. Jeschke and
  • Roser Valentí

Beilstein J. Nanotechnol. 2018, 9, 711–720, doi:10.3762/bjnano.9.66

Graphical Abstract
  • energies of the combined system (adsorbate and the slab), of the slab, and of the adsorbate molecule in the gas phase in a neutral state, respectively. The most stable systems were considered for studying the dynamics of the adsorbed precursor molecule. MD simulations were performed for 20 ps on a
  • PM6 (parametrized model 6) level using the Berny algorithm implemented in the Gaussian 09 software [24]. Results and Discussion Adsorption of (C5H4CH3)Pt(CH3)3 on SiO2 substrates The interaction of the precursor molecule with the substrate, in general, depends on both the orientation of the adsorbate
PDF
Album
Full Research Paper
Published 23 Feb 2018

The effect of atmospheric doping on pressure-dependent Raman scattering in supported graphene

  • Egor A. Kolesov,
  • Mikhail S. Tivanov,
  • Olga V. Korolik,
  • Olesya O. Kapitanova,
  • Xiao Fu,
  • Hak Dong Cho,
  • Tae Won Kang and
  • Gennady N Panin

Beilstein J. Nanotechnol. 2018, 9, 704–710, doi:10.3762/bjnano.9.65

Graphical Abstract
  • transferred graphene on Cu in Figure 2, where one can notice a similar behavior up to a certain constant. A considerable similarity of the peak position downshift indicates analogous kinetics of adsorbate removal from graphene surface. However, a different intercept leads to a 13–15 cm−1 distance between the
PDF
Album
Full Research Paper
Published 22 Feb 2018

Electron interactions with the heteronuclear carbonyl precursor H2FeRu3(CO)13 and comparison with HFeCo3(CO)12: from fundamental gas phase and surface science studies to focused electron beam induced deposition

  • Ragesh Kumar T P,
  • Paul Weirich,
  • Lukas Hrachowina,
  • Marc Hanefeld,
  • Ragnar Bjornsson,
  • Helgi Rafn Hrodmarsson,
  • Sven Barth,
  • D. Howard Fairbrother,
  • Michael Huth and
  • Oddur Ingólfsson

Beilstein J. Nanotechnol. 2018, 9, 555–579, doi:10.3762/bjnano.9.53

Graphical Abstract
  • of metal from the adsorbed H2FeRu3(CO)13 film at these low temperatures (≈213 K). During XPS analysis, secondary electrons will be generated and can also cause changes to the adsorbate molecules. As a result, separate control studies were conducted to determine the effect of X-ray irradiation alone
  • on the adsorbate layer. Results from these experiments are shown in Figure S3, Supporting Information File 1, where a H2FeRu3(CO)13 film was continuously exposed to X-rays and simultaneously analyzed using XPS. Comparison with electron irradiated films reveal that X-ray irradiation produces the same
PDF
Album
Supp Info
Full Research Paper
Published 14 Feb 2018
Other Beilstein-Institut Open Science Activities