Synthesis and characterization of quaternary La(Sr)S–TaS₂ misfit-layered nanotubes

• Marco Serra,
• Erumpukuthickal Ashokkumar Anumol,
• Dalit Stolovas,
• Iddo Pinkas,
• Ernesto Joselevich,
• Reshef Tenne,
• Andrey Enyashin and
• Francis Leonard Deepak

Beilstein J. Nanotechnol. 2019, 10, 1112–1124, doi:10.3762/bjnano.10.111

• combination of high-resolution electron microscopy and spectroscopy. These studies enable detailed insight into the structural aspects of these phases to be gained at the atomic scale. The addition of Sr had a significant impact on the formation of the nanotubes with higher Sr content, leading to a decrease

• Sr content was undertaken. In particular, high-resolution transmission electron microscopy and Raman spectroscopy served as the main experimental tools to analyze these new nanotubes. Density functional theory (DFT) calculations were used to study the chemical bonding and the stability of the SrxLa1

• distorted NaCl structure and the TaS2 can be indexed in a pseudo-hexagonal unit cell [35][38]. Figure 4 shows low-magnification and high-resolution HAADF-STEM images of two LaS–TaS2 (10 atom % Sr in the precursor) nanotubes. One can see the stacking of the SrxLa1−xS (indicated by green lines) and TaS2

CuInSe₂ quantum dots grown by molecular beam epitaxy on amorphous SiO₂ surfaces

• Henrique Limborço,
• Pedro M.P. Salomé,
• Rodrigo Ribeiro-Andrade,
• Jennifer P. Teixeira,
• Nicoleta Nicoara,
• Kamal Abderrafi,
• Joaquim P. Leitão,
• Juan C. Gonzalez and
• Sascha Sadewasser

Beilstein J. Nanotechnol. 2019, 10, 1103–1111, doi:10.3762/bjnano.10.110

• the 530 °C sample. Figure 2a shows a high-resolution cross-section high-angle annular dark-field (HAADF) image of a nanodot. Due to the large density of nanodots in the sample, a superposition of two other nanodots can be observed on the back (left and right sides of the image) of the nanodot under

• . (a) High-resolution HAADF image of a nanodot on top of the amorphous SiO2 layer, taken along the [110] zone axis of the Si substrate. (b) Power spectrum of the HAADF image, showing the nanodot and Si substrate lattices. (c) Extracted pattern showing the indexed diffraction spots of the nanodot (green

Glucose-derived carbon materials with tailored properties as electrocatalysts for the oxygen reduction reaction

• Rafael Gomes Morais,
• Natalia Rey-Raap,
• José Luís Figueiredo and
• Manuel Fernando Ribeiro Pereira

Beilstein J. Nanotechnol. 2019, 10, 1089–1102, doi:10.3762/bjnano.10.109

• treatment. This effect is less obvious in the spectra of the activated sample, as its higher chemical stability results in a lower degree of functionalization and, therefore, a lower formation of the triazine aromatic ring. The high-resolution N 1s spectra of doped samples was deconvoluted into three

Fe₃O₄ nanoparticles as a saturable absorber for giant chirped pulse generation

• Ji-Shu Liu,
• Xiao-Hui Li,
• Abdul Qyyum,
• Yi-Xuan Guo,
• Tong Chai,
• Hua Xu and
• Jie Jiang

Beilstein J. Nanotechnol. 2019, 10, 1065–1072, doi:10.3762/bjnano.10.107

• , respectively. Figure 4f shows the results from a high-resolution transmission electron microscope (HR-TEM). Meanwhile, the lattice spacing of the FONP material is found to be about 0.38 nm. The characteristics of the output pulse are summarized in Figure 5 and Figure 6. In Figure 5a, the spectrum shows a

• . (a, b, c) Scanning electron microscopy, (d, e) transition electron microscopy and (f) high-resolution transmission microscopy images of the FONP saturable absorber. (a) The corresponding spectrum in the fundamental RPR; (b) Oscilloscope trace in the 3 µs range; (c) Radio frequency (RF) spectrum

Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

• Atiđa Selmani,
• Johannes Lützenkirchen,
• Kristina Kučanda,
• Dario Dabić,
• Engelbert Redel,
• Ida Delač Marion,
• Damir Kralj,
• Darija Domazet Jurašin and
• Maja Dutour Sikirić

Beilstein J. Nanotechnol. 2019, 10, 1024–1037, doi:10.3762/bjnano.10.103

• mixed phase, TiO2(B) and trititanate layered TNW structure was confirmed by powder X-ray diffraction (PXRD) as well as Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy. The details can be found in Supporting Information File 1. High-resolution scanning electron microscopy (HR-SEM

• resolution of the Raman spectrometer was 4 cm−1. The morphology of the TNWs was visualized by using high-resolution scanning electron microscopy Zeiss HR-SEM (Gemini Class) at 3–5 kV. AFM imaging was performed with a Nanosurf Flex AFM in dynamic force mode (simultaneously acquiring topography, amplitude and

• TNW surface and 12-2-12 due to the two positively charged polar heads of 12-2-12. Micrographs of synthesized TNWs taken by a) high-resolution scanning electron microscopy and b) atomic force microscopy. Variation of zeta potential (ζ) with pH of TNWs in 10−3 mol dm−3 NaBr aqueous solution. γ(TNW) = 1

Structural and optical properties of penicillamine-protected gold nanocluster fractions separated by sequential size-selective fractionation

• Xiupei Yang,
• Zhengli Yang,
• Fenglin Tang,
• Jing Xu,
• Maoxue Zhang and
• Martin M. F. Choi

Beilstein J. Nanotechnol. 2019, 10, 955–966, doi:10.3762/bjnano.10.96

• sequentially. High-resolution transmission electron microscopy (HRTEM) shows that the four fractions are well-dispersed spherical particles of diameter 3.0 ± 0.6, 2.3 ± 0.5, 1.7 ± 0.4, and 1.2 ± 0.4 nm. Proton nuclear magnetic resonance spectroscopy suggests that disulfide, excess ligands and gold(I) complexes

• supernatant was dried with N2 which was designated as the residue. Characterization of the structure and optical properties of gold nanoclusters High-resolution transmission electron microscopy (HRTEM) measurements were recorded on a JEOL 2010 transmission electron microscope (Tokyo, Japan) operating at an

• thiol residues combine to form a disulfide bridge through a thiocarbonyl group, which can be further oxidized in air to form a thiosulfonate [34]. The Au/S atom ratios calculated from integrated Au 4f and S 2p peak intensities measured in high-resolution scans are also shown in the right bottom panel of

Nanoscale optical and structural characterisation of silk

• Meguya Ryu,
• Reo Honda,
• Adrian Cernescu,
• Arturas Vailionis,
• Armandas Balčytis,
• Jitraporn Vongsvivut,
• Jing-Liang Li,
• Denver P. Linklater,
• Elena P. Ivanova,
• Vygantas Mizeikis,
• Mark J. Tobin,
• Junko Morikawa and
• Saulius Juodkazis

Beilstein J. Nanotechnol. 2019, 10, 922–929, doi:10.3762/bjnano.10.93

• ]. Silk exhibits a uniaxial symmetry that can be examined from longitudinal microtome slices used in this study. Sub-wavelength resolution in hyperspectral IR mapping of absorbance and orientational properties of the absorbing bands was reliably achieved in 100 nm thick slices of silk. Such a high

• -resolution technique is essential in order to gain a better understanding of the fibril structure of silk [8]. Experimental Silk slices White Bombyx mori cocoons were purchased from the silk rearing house in Jiangsu, China, and brown Antheraea pernyi silkworm cocoons were collected from Liaoning Province

Comparing a porphyrin- and a coumarin-based dye adsorbed on NiO(001)

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

Beilstein J. Nanotechnol. 2019, 10, 874–881, doi:10.3762/bjnano.10.88

• a1, b1, a2 and b2 are similar in the range of 1.5 ± 0.1 nm, while the angles θ1 and θ2 of the unit cells clearly differ (88 ± 1° and 82 ± 1°, respectively). The molecular densities of both types are measured to be D1 = D2 = 0.46 ± 0.02 nm−2. Based on these high-resolution images and on the measured

• be determined from the close-up high-resolution nc-AFM topographic image shown in Figure 4b. In this image it can be seen (in green) that the mesh motive is composed of two different pairs of dyes, implying that a unit cell is composed of four molecules. The first pair of molecules has the molecular

• charge injection compared to Cu-TCPP. To summarize the results, a comparison of Cu-TCPP and C343 is given in Table 3. Conclusion The adsorption of Cu-TCPP molecules on the surface of NiO(001) was investigated by nc-AFM and compared to that of C343 molecules. Using high-resolution topographic measurements

Tungsten disulfide-based nanocomposites for photothermal therapy

• Tzuriel Levin,
• Hagit Sade,
• Rina Ben-Shabbat Binyamini,
• Maayan Pour,
• Iftach Nachman and
• Jean-Paul Lellouche

Beilstein J. Nanotechnol. 2019, 10, 811–822, doi:10.3762/bjnano.10.81

• , US) and then dried at ambient temperature for 24 h. High-resolution transmission electron microscopy (HRTEM) images were acquired using a high-resolution transmission electron microscope (JEM 2100, JEOL Inc., Peabody, MA, US) equipped with a 4k × 4k CCD camera (Gatan, Pleasanton, CA, US). Samples

• were prepared using the same procedure as for TEM analysis. High-resolution scanning electron microscopy (HRSEM) images were acquired using a Magellan 400L high-resolution scanning electron microscope (FEI). Samples for HRSEM were prepared by placing a few drops of the aqueous dispersion of the dried

Capillary force-induced superlattice variation atop a nanometer-wide graphene flake and its moiré origin studied by STM

• Loji K. Thomas and
• Michael Reichling

Beilstein J. Nanotechnol. 2019, 10, 804–810, doi:10.3762/bjnano.10.80

• part (B) to be flat, constituting a sphere–plane geometry [17] (see inset of Figure 3). Since the tip edge is expected to possess a “single-atom” or few-atom termination for obtaining high-resolution images, the radius of the sphere should be in the range of a few angstroms. This is in contrast to

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

• , Physical Electronics), equipped with a monochromatic Al Kα X-ray source (1486.6 eV) operated at 15 kV with a spot size of 100 µm and a power of 24.8 W. Survey (0–1200 eV) and high resolution (HR) spectra were recorded in FAT (Fixed Analyzer Transmission) mode at a pass energy of 117.40 and 29.35 eV

• –OH absorption has to be attributed to increased formation of Zn–OH groups as a function of the plasma time. In Figure 2, the high-resolution XPS spectra of C 1s and O 1s are reported as a function of the plasma exposure time. In Table 1, the atomic content (atom %) of carbon, oxygen, and zinc are

• stretching of carbonate/bidentate/carboxyl groups (νOCO) (1300–1660 cm−1) are highlighted in the image. High-resolution XPS spectra of the pristine (a–c) and annealed (d,e) zincone-like layers acquired after 60 s Ar+ sputtering. Pristine: a) C 1s HR spectrum and b) O 1s HR spectrum as a function of the

Ultrasonication-assisted synthesis of CsPbBr₃ and Cs₄PbBr₆ perovskite nanocrystals and their reversible transformation

• Longshi Rao,
• Xinrui Ding,
• Xuewei Du,
• Guanwei Liang,
• Yong Tang,
• Kairui Tang and
• Jin Z. Zhang

Beilstein J. Nanotechnol. 2019, 10, 666–676, doi:10.3762/bjnano.10.66

• , JEM-2100F, JEOL, Japan) with an accelerating voltage of 100 kV. High-resolution TEM (HRTEM) was carried out on a JEOL JEM-2100F instrument operating at 200 kV. The crystal phases of the products were measured using an X-ray diffractometer (XRD, D8-Advance, Bruker, Germany) with a Cu Kα radiation

• spectra (red line) and PL emission spectra (blue line). Insets are high resolution absorption spectrum and representative digital photograph. The change of (a) UV–vis absorption spectra, (b) PL spectra, and (c)–(h) TEM images of CsPbBr3 PNCs synthesized at 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 mL of OAm

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

• deposited onto Si(100) wafers was done using a high-resolution Empyrean diffractometer (PANalytical) operating at 45 kV (generator voltage) and a tube current of 40 mA (Cu Kα radiation). A Pixcell 1D medipix3 detector operating in the open detector mode was used. An optimization of the grazing incidence

Enhancement in thermoelectric properties due to Ag nanoparticles incorporated in Bi₂Te₃ matrix

• Srashti Gupta,
• Dinesh Chandra Agarwal,
• Bathula Sivaiah,
• Sankarakumar Amrithpandian,
• Kandasami Asokan,
• Ajay Dhar,
• Binaya Kumar Panigrahi,
• Devesh Kumar Avasthi and
• Vinay Gupta

Beilstein J. Nanotechnol. 2019, 10, 634–643, doi:10.3762/bjnano.10.63

• with Bi2Te3. High-resolution transmission electron microscopy Transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) images of Bi2Te3:Ag samples annealed at 573 K are shown in Figure 3. Figure 3a,b shows the bright-field image and the HRTEM image of the as-prepared Bi2Te3 samples with

Biomimetic synthesis of Ag-coated glasswing butterfly arrays as ultra-sensitive SERS substrates for efficient trace detection of pesticides

• Guochao Shi,
• Mingli Wang,
• Yanying Zhu,
• Yuhong Wang,
• Xiaoya Yan,
• Xin Sun,
• Haijun Xu and
• Wanli Ma

Beilstein J. Nanotechnol. 2019, 10, 578–588, doi:10.3762/bjnano.10.59

• analytical spectroscopy technique that can achieve single-molecule detection and provide high-resolution “fingerprint” spectral information [1][2]. The electromagnetic enhancement mechanism (EM), a consequence of the coherent collective electron oscillation, plays a dominant role in the enhancement of Raman

Ceria/polymer nanocontainers for high-performance encapsulation of fluorophores

• Kartheek Katta,
• Dmitry Busko,
• Yuri Avlasevich,
• Katharina Landfester,
• Stanislav Baluschev and
• Rafael Muñoz-Espí

Beilstein J. Nanotechnol. 2019, 10, 522–530, doi:10.3762/bjnano.10.53

• distribution of ceria nanocrystals on the surface of the capsules. The presence of bright spots in the dark field images (Figure 4b) confirms crystalline domains lying in the detection plane [10]. A corresponding high-resolution image of the hybrid sample NC-CeO2 is shown in Figure 4c,d. The ceria content for

• -field image; c, d) high-resolution images at different magnification. Fluorescence spectra of terylene diimide encapsulated in nanocapsules: NC (continuous black line, ambient conditions without cerium oxide), NC(Ar) (dashed red line, argon conditions without cerium oxide), NC-CeO2 (dotted blue line

• . Acknowledgements The source of this article is the doctoral dissertation of the first author, Dr. Katheek Katta (Uniform Resource Name: urn:nbn:de:hebis:77-diss-1000007157). Michael Steiert, Petra Räder, Gunnar Glaßer, and Katrin Kirchhoff are acknowledged for XRD, TGA, EDX, and high-resolution TEM measurements

A porous 3D-RGO@MWCNT hybrid material as Li–S battery cathode

• Yongguang Zhang,
• Jun Ren,
• Yan Zhao,
• Taizhe Tan,
• Fuxing Yin and
• Yichao Wang

Beilstein J. Nanotechnol. 2019, 10, 514–521, doi:10.3762/bjnano.10.52

• (SmartLab, Rigaku Corporation) with Cu Ka radiation. X-ray photoelectron spectroscopy (XPS, Shimadzy Axis Ultra) was applied to investigate the chemical valence states and compositions of the sample. Scanning electron microscopy (SEM, Hitachi S4800) and high-resolution transmission electron microscopy

• @MWCNT; (c) TGA of S-3D-RGO@MWCNT; (d) The XPS survey spectrum of S-3D-RGO@MWCNT composite; high-resolution XPS spectra of (e) C 1s, (f) S 2p. CV curves of the S-3D-RGO@MWCNT cathode at 0.1 mV·s−1 in the first four cycles. (a) CV measurement of the S-3D-RGO@MWCNT cathode (1st, 50th, 100th, 150th and

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

• 1.18 ± 0.07 nm−2 and 1.12 ± 0.06 nm−2, respectively. Figure 3 shows the high-resolution, drift-corrected, and calibrated images (Figure 3a and Figure 3c) of the two polymorphs and their proposed packing structures (Figure 3b and Figure 3d). The exact registry of the molecules on HOPG was not determined

Widening of the electroactivity potential range by composite formation – capacitive properties of TiO₂/BiVO₄/PEDOT:PSS electrodes in contact with an aqueous electrolyte

• Konrad Trzciński,
• Mariusz Szkoda,
• Andrzej P. Nowak,
• Marcin Łapiński and
• Anna Lisowska-Oleksiak

Beilstein J. Nanotechnol. 2019, 10, 483–493, doi:10.3762/bjnano.10.49

• routes [43][44] and, as it was previously shown, it leads to the partial reduction of Ti4+ centers and the formation of Ti3+ [45]. On the other hand, here the XPS high-resolution Ti 2p spectrum of the Ti/TiO2:H/BiVO4:H sample shows that after the hydrogenation process titanium exists in the Ti4+ form

Temperature-dependent Raman spectroscopy and sensor applications of PtSe₂ nanosheets synthesized by wet chemistry

• Mahendra S. Pawar and
• Dattatray J. Late

Beilstein J. Nanotechnol. 2019, 10, 467–474, doi:10.3762/bjnano.10.46

• -synthesized PtSe2 sample clearly showing the sheet-like morphology with lateral dimension of ≈700 nm. Figure 3d shows a high-resolution TEM image of the PtSe2 nanosheets. The inset of Figure 3d shows the selected area electron diffraction pattern (SAED) which depicts the crystalline nature of the as

Reduced graphene oxide supported C₃N₄ nanoflakes and quantum dots as metal-free catalysts for visible light assisted CO₂ reduction

• Md Rakibuddin and
• Haekyoung Kim

Beilstein J. Nanotechnol. 2019, 10, 448–458, doi:10.3762/bjnano.10.44

• , X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy (TEM), and UV–vis spectroscopy. High-resolution TEM images clearly show that C3N4 QDs (average diameter of 2–3 nm) and NFs (≈20–45 nm) are

• the breaking of most C–N bonds due to formation of NFs and QDs. Figure 3d shows a high-resolution XPS spectrum of O 1s present in the GCN-5 hybrid. The peaks at binding energies of 531.7 and 532.8 eV are attributed to carbonyl and epoxy C–O groups of rGO, respectively, which are still present in the

• -5: a) survey spectrum, and high-resolution b) C 1s, c) N 1s and d) O 1s spectra. Fourier transform infrared spectra of the prepared g-C3N4, CN nanoflakes and quantum dots, and GCN-5 photocatalysts. TEM images of the a) CN-5, b) GCN-5, c) CN-10, d) GCN-10, e) CN-20 and GCN-20 nanoflakes and quantum

Advanced scanning probe lithography using anatase-to-rutile transition to create localized TiO₂ nanorods

• Julian Kalb,
• Vanessa Knittel and
• Lukas Schmidt-Mende

Beilstein J. Nanotechnol. 2019, 10, 412–418, doi:10.3762/bjnano.10.40

• contrast, local light scattering, high-resolution surface roughness gradients or microchannels. This set of extensions for rutile TiO2 nanorod applications is a valuable toolkit for lab-on-a-chip devices [33][34][35]. Recently, we investigated the influence of rutile seed layers on the growth and shape of

Sub-wavelength waveguide properties of 1D and surface-functionalized SnO₂ nanostructures of various morphologies

• Venkataramana Bonu,
• Binaya Kumar Sahu,
• Arindam Das,
• Sankarakumar Amirthapandian,
• Sandip Dhara and
• Harish C. Barshilia

Beilstein J. Nanotechnol. 2019, 10, 379–388, doi:10.3762/bjnano.10.37

• of 950 °C. The inset in Figure 1a shows a high-resolution image of the smooth, square-shaped NWs. The length and width of the NWs are around 100 µm and 200–250 nm, respectively. A Au nanoparticle appearing as a dark contrast at the tip of the NW supports the VLS growth mechanism [24]. Figure 1b shows

• the TEM images of the square-shaped NWs. A TEM bright field image of square-shaped NW is shown in Figure 2a. The high-resolution TEM image of the single square type NWs shows the crystalline (101) plane which belongs to the rutile tetragonal SnO2 with a d spacing value of 2.65 Å. (Figure 2b). The

Nitrous oxide as an effective AFM tip functionalization: a comparative study

• Taras Chutora,
• Bruno de la Torre,
• Pingo Mutombo,
• Jack Hellerstedt,
• Jaromír Kopeček,
• Pavel Jelínek and
• Martin Švec

Beilstein J. Nanotechnol. 2019, 10, 315–321, doi:10.3762/bjnano.10.30

• characterize the adsorption of the N2O species on Au(111) by means of atomic force microscopy with CO-functionalized tips and density functional theory (DFT) simulations. Subsequently we devise a method of attaching a single N2O to a metal tip apex and benchmark its high-resolution imaging and spectroscopic

• capabilities using FePc molecules. Our results demonstrate the feasibility of high-resolution imaging. However, we find an inherent asymmetry of the N2O probe-particle adsorption on the tip apex, in contrast to a CO tip reference. These findings are consistent with DFT calculations of the N2O- and CO tip

• apexes. Keywords: atomic force microscopy; Au(111); carbon monoxide; functionalization; high resolution; nitrous oxide; submolecular resolution; Introduction Frequency-modulated atomic force microscopy (AFM) has become the tool of choice for the characterization of molecules on the atomic scale

A Ni(OH)₂ nanopetals network for high-performance supercapacitors synthesized by immersing Ni nanofoam in water

• Donghui Zheng,
• Man Li,
• Yongyan Li,
• Chunling Qin,
• Yichao Wang and
• Zhifeng Wang

Beilstein J. Nanotechnol. 2019, 10, 281–293, doi:10.3762/bjnano.10.27

• layers stacked together, indicating an ultrathin nature [12][34]. The high-resolution TEM image in Figure 3d provides more detailed lattice structure information of the Ni(OH)2 nanopetals. The interplanar distances of 0.156 nm and 0.234 nm are related to the (110) and (101) planes of the Ni(OH)2

• views. (i) Nanopetals length and space size of petals as functions of the immersion time. (j) XRD patterns of the as-spun, as-dealloyed and Ni(OH)2/Ni-NF/MG electrodes. (a) Cross-sectional SEM images of the Ni(OH)2/Ni-NF/MG-5, the inset is a local high-resolution image; (b, c) low- and high