Site-specific growth of oriented ZnO nanocrystal arrays

• Rekha Bai,
• Dinesh K. Pandya,
• Sujeet Chaudhary,
• Veer Dhaka,
• Vladislav Khayrudinov,
• Jori Lemettinen,
• Christoffer Kauppinen and
• Harri Lipsanen

Beilstein J. Nanotechnol. 2019, 10, 274–280, doi:10.3762/bjnano.10.26

• ,e. The corresponding high-resolution TEM (HRTEM) image is recorded to further investigate the morphological characteristics of ZnO NCs. The observed sharp lattice fringes in the HRTEM image reveal the good crystallinity of twinned ZnO NCs. This is possibly due to the low ion flux arriving at the

Wet chemistry route for the decoration of carbon nanotubes with iron oxide nanoparticles for gas sensing

• Hussam M. Elnabawy,
• Juan Casanova-Chafer,
• Badawi Anis,
• Mostafa Fedawy,
• Mattia Scardamaglia,
• Carla Bittencourt,
• Ahmed S. G. Khalil,
• Eduard Llobet and
• Xavier Vilanova

Beilstein J. Nanotechnol. 2019, 10, 105–118, doi:10.3762/bjnano.10.10

• size distribution for all samples. In addition, HRTEM imaging for the anchored iron oxide nanoparticles on the MWCNTs surface was performed and the selected area electron diffraction (SAED) pattern for was identified, as shown in Figure 4. The image shows the high crystallinity of the prepared iron

• structure, which confirms the HRTEM results. In the XRD pattern for Fe2O3/CNTs the characteristic peak at 25.994° attributed to plane (002) of the CNTs can be clearly identified. The other diffraction peaks at 35.6°, 43.15°, 53.28°, 57.3°, 63.12° can be attributed to planes (311), (400), (422), (511) and

• (c) and acetone (d). Different decoration densities for different decoration ratios of 1:1 (a), 1:1.3 (b) and 1:1.5 (c). High magnification HRTEM images of MWCNTs decorated with Fe2O3 nanoparticles. The inset shows the electron diffraction pattern (SAED) for the selected area. XPS core level spectra

Zn/F-doped tin oxide nanoparticles synthesized by laser pyrolysis: structural and optical properties

• Florian Dumitrache,
• Iuliana P. Morjan,
• Elena Dutu,
• Ion Morjan,
• Claudiu Teodor Fleaca,
• Monica Scarisoreanu,
• Alina Ilie,
• Marius Dumitru,
• Cristian Mihailescu,
• Adriana Smarandache and
• Gabriel Prodan

Beilstein J. Nanotechnol. 2019, 10, 9–21, doi:10.3762/bjnano.10.2

•  3a, a high-resolution TEM (HRTEM) image of a Zn/F-doped SnO2 sample (labeled ZTO0.44) and its mean size distribution (inset in Figure 3a) are presented. The polyhedral crystalline tin dioxide aggregated nanoparticles can be clearly seen in the HRTEM image. Also, a very thin disordered layer can be

• front of a monochromatic X-ray beam having a variable incidence θ angle and a constant wavelength corresponding to the Kα copper line (λ = 1.5418 Å). Transmission electron microscopy (TEM and HRTEM) using a Tecnai F30 G2 (300 kV) instrument, was used to investigate the particle morphology, as well as

• , F-doped and undoped SnO2 nanoparticles. XPS high-resolution spectra of: (a, b, c, d) Zn/F-doped SnO2 nanoparticles (sample ZTO0.44) and (e, f, g, h) F-doped SnO2 nanoparticles (sample ZTOst). a) HRTEM image of sample ZTO0.44 and its mean size distribution; b) SAED patterns of ZTOst (top) and ZTO0.44

Comparative biological effects of spherical noble metal nanoparticles (Rh, Pd, Ag, Pt, Au) with 4–8 nm diameter

• Alexander Rostek,
• Marina Breisch,
• Kevin Pappert,
• Kateryna Loza,
• Marc Heggen,
• Manfred Köller,
• Christina Sengstock and
• Matthias Epple

Beilstein J. Nanotechnol. 2018, 9, 2763–2774, doi:10.3762/bjnano.9.258

• functionalization were all the same. Size and morphology of the nanoparticles were determined by dynamic light scattering (DLS), analytical disc centrifugation (differential centrifugal sedimentation, DCS), and high-resolution transmission electron microscopy (HRTEM). Cell-biological experiments were performed to

• ), analytical disc centrifugation (differential centrifugal sedimentation, DCS), ultraviolet (UV) spectroscopy, and high-resolution transmission electron microscopy (HRTEM). All characterization data are summarized in Table 2. All nanoparticles have a neutral or negative zeta potential. This is probably due to

• nanoparticles (Rh, Pd, Pt, Ag, Au). In each upper right corner, a typical nanoparticle is shown in higher magnification. Particle size distributions of noble metal nanoparticles determined by high-resolution TEM imaging (HRTEM; log-normal particle size distribution fit). The histograms were analysed using a log

Accurate control of the covalent functionalization of single-walled carbon nanotubes for the electro-enzymatically controlled oxidation of biomolecules

• Naoual Allali,
• Veronika Urbanova,
• Mathieu Etienne,
• Xavier Devaux,
• Martine Mallet,
• Brigitte Vigolo,
• Jean-Joseph Adjizian,
• Chris P. Ewels,
• Sven Oberg,
• Alexander V. Soldatov,
• Edward McRae,
• Yves Fort,
• Manuel Dossot and
• Victor Mamane

Beilstein J. Nanotechnol. 2018, 9, 2750–2762, doi:10.3762/bjnano.9.257

• /en/hipco, accessed August 2016). Figure 2a gives an example of the HRTEM image of this starting material. A small amount of residual iron catalyst is visible (dark particles pointed out by red arrows). Carbonaceous impurities are mainly present in the form of carbon remains of nanometric size

• defects introduced by tuning the irradiation time. A few milligrams of the corresponding oxidized SWCNTs were analyzed in each case before proceeding to step 2. At this stage, the samples were protected under argon gas to avoid any moisture contamination and directly analyzed by HRTEM, XPS and TGA-MS

• −1) and 5 µL of DI (5 mg·mL−1). Afterwards, 5 µL of this mixture were deposited onto the chitosan/HIPCO-Fc modified GCE and allowed to dry at ambient temperature. Analytical techniques: High-resolution transmission electron microscopy (HRTEM) and high-resolution scanning transmission electron

Size-selected Fe₃O₄–Au hybrid nanoparticles for improved magnetism-based theranostics

• Maria V. Efremova,
• Yulia A. Nalench,
• Eirini Myrovali,
• Anastasiia S. Garanina,
• Ivan S. Grebennikov,
• Polina K. Gifer,
• Maxim A. Abakumov,
• Marina Spasova,
• Makis Angelakeris,
• Alexander G. Savchenko,
• Michael Farle,
• Natalia L. Klyachko,
• Alexander G. Majouga and
• Ulf Wiedwald

Beilstein J. Nanotechnol. 2018, 9, 2684–2699, doi:10.3762/bjnano.9.251

• varied while holding the Fe3O4/Au phase volume ratio almost constant. Additionally, the crystallographic orientation of Fe3O4 and Au for samples MNP-15 (with in situ synthesized Au seeds) and MNP-25 (with presynthesized Au seeds) was evaluated using bright-field high-resolution TEM (HRTEM) imaging

• reports on similar hybrids and electrodeposited epitaxial films [32][33]. HRTEM images of samples MNP-6 and MNP-44 are presented in Supporting Information File 1, Figure S2. While MNP-44 shows a similar growth mode, the smallest hybrid NPs (MNP-6) show a rather spherical shape for the Au core and

• from bottom to top – samples MNP-6, MNP-15, MNP-25 and MNP-44, respectively. The intensity of each diffractogram is normalized to the strongest peak. The red and blue vertical lines represent the angular position and relative intensity of reference bulk magnetite and gold phases. HRTEM and

Improved catalytic combustion of methane using CuO nanobelts with predominantly (001) surfaces

• Qingquan Kong,
• Yichun Yin,
• Bing Xue,
• Yonggang Jin,
• Wei Feng,
• Zhi-Gang Chen,
• Shi Su and
• Chenghua Sun

Beilstein J. Nanotechnol. 2018, 9, 2526–2532, doi:10.3762/bjnano.9.235

• is the SAED pattern of the selected yellow square area); (d) HRTEM along the [1] direction; (e,f) TEM images of a CuO nanobelt after catalysis tests at 650 °C. CH4 conversion against the temperature. (a) Heating profile (Tmax = 850 °C) for NBs, NWs and NPs, with 1% Pd/Co3O4 as a reference. (b

High-temperature magnetism and microstructure of a semiconducting ferromagnetic (GaSb)_1−x(MnSb)_x alloy

• Leonid N. Oveshnikov,
• Elena I. Nekhaeva,
• Alexey V. Kochura,
• Alexander B. Davydov,
• Mikhail A. Shakhov,
• Sergey F. Marenkin,
• Oleg A. Novodvorskii,
• Alexander P. Kuzmenko,
• Alexander L. Vasiliev,
• Boris A. Aronzon and
• Erkki Lahderanta

Beilstein J. Nanotechnol. 2018, 9, 2457–2465, doi:10.3762/bjnano.9.230

• variations. Contrast changes in the lateral direction are due to diffraction contrast arising from the columnar film microstructure, which was distinctly observed in bright-field TEM (Figure 4a) and in high-resolution bright-field TEM (HRTEM) images (Figure 4b), and even affects the HAADF TEM image (not

• presented here). Energy-dispersive X-ray microanalysis (EDX) of the film composition near the interface edge and at a distance from it yielded the ratio Mn/Ga/Sb = 30:30:40 with 2% accuracy. A HRTEM image of studied film is presented in Figure 4b. Fast Fourier-transform (FFT) analysis of the high-resolution

• and Hall slope ΔRH normalized by the corresponding values at T = 320 K. TEM images of the film cross section after annealing (sample GM3): (a) bright-field image, (b) HRTEM image. (a,d) HRTEM images of sample areas. (b,e) Corresponding two-dimensional Fourier spectra. (c,f) Calculated electronograms

Hierarchical heterostructures of Bi₂MoO₆ microflowers decorated with Ag₂CO₃ nanoparticles for efficient visible-light-driven photocatalytic removal of toxic pollutants

• Shijie Li,
• Wei Jiang,
• Shiwei Hu,
• Yu Liu,
• Yanping Liu,
• Kaibing Xu and
• Jianshe Liu

Beilstein J. Nanotechnol. 2018, 9, 2297–2305, doi:10.3762/bjnano.9.214

• /nanoparticles [32]. Further information about the structure of ACO/BMO-30 was collected from TEM images (Figure 3). The TEM images are in line with the SEM observations, i.e., ACO/BMO-30 exhibits a flower-like architecture loaded with Ag2CO3 nanoparticles (Figure 3a,b). The HRTEM displays two different lattice

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

• Muhammad Imran,
• Nunzio Motta and
• Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

Synthesis of a MnO₂/Fe₃O₄/diatomite nanocomposite as an efficient heterogeneous Fenton-like catalyst for methylene blue degradation

• Zishun Li,
• Xuekun Tang,
• Kun Liu,
• Jing Huang,
• Yueyang Xu,
• Qian Peng and
• Minlin Ao

Beilstein J. Nanotechnol. 2018, 9, 1940–1950, doi:10.3762/bjnano.9.185

• successful loading of of iron oxide and manganese oxide in the two-step procedure. To further characterize the morphologies and structures of Fe3O4/diatomite and MnO2/Fe3O4/diatomite, transmission electron microscopy (TEM) and high-resolution transmission electron microscope (HRTEM) analyses were also

• nanoparticles [28]. The marked lattice fringe spacing of 0.28 nm in the HRTEM images (inset) is corresponding to the (331) planes of cubic magnetite [29]. Figure 4b shows the TEM images of MnO2/Fe3O4/diatomite, the nanoparticles on the surface are fully covered by a layer of rough 3D structured material. As

• seen in the magnified image (Figure 4c), a flower-like or urchin-like structure of the outer MnO2 shell can be easily observed. The crystal structure of the outer shell is analyzed by using HRTEM, as shown in Figure 4d. As a whole, the chaotic and unclear lattice fringes in the image illustrate the

Synthesis of hafnium nanoparticles and hafnium nanoparticle films by gas condensation and energetic deposition

• Irini Michelakaki,
• Nikos Boukos,
• Dimitrios A. Dragatogiannis,
• Spyros Stathopoulos,
• Costas A. Charitidis and
• Dimitris Tsoukalas

Beilstein J. Nanotechnol. 2018, 9, 1868–1880, doi:10.3762/bjnano.9.179

• time of the NPs in the aggregation zone results in the formation of bigger NPs. Soft landing – structural characterization Structural characterization of the nanoparticles was performed by high-resolution electron transmission microscopy (HRTEM) and X-ray diffraction. In both cases the nanoparticles

• were exposed to ambient air prior to characterization. From analysis of HRTEM images it is evident that Hf NPs have a distinct core–shell structure, consistent with a Hafnium core covered with Hafnium oxide (Figure 2). In the core the distance between adjacent planes is equal to d = 0.275 nm, value

• the temperature [37] as we expect it in the vacuum system during NP growth. There are also some peaks that are due to a compound of Hf with oxygen (O) and/or nitrogen (N). This result is consistent with HRTEM measurements. The exact nature of the shell cannot be identified from the X-ray patterns

Uniform cobalt nanoparticles embedded in hexagonal mesoporous nanoplates as a magnetically separable, recyclable adsorbent

• Can Zhao,
• Yuexiao Song,
• Tianyu Xiang,
• Wenxiu Qu,
• Shuo Lou,
• Xiaohong Yin and
• Feng Xin

Beilstein J. Nanotechnol. 2018, 9, 1770–1781, doi:10.3762/bjnano.9.168

• the surface of NPLs-2.5-800 are observed clearly. A thin carbon layer is found on the edge of the platelet. An HRTEM image shows Co nanoparticles with an average diameter of 21 nm that are embedded evenly in the carbon layer (Figure 3B). The measured d-spacing value of 0.21 nm in Figure 3C

Toward the use of CVD-grown MoS₂ nanosheets as field-emission source

• Geetanjali Deokar,
• Nitul S. Rajput,
• Junjie Li,
• Francis Leonard Deepak,
• Wei Ou-Yang,
• Nicolas Reckinger,
• Carla Bittencourt,
• Jean-Francois Colomer and
• Mustapha Jouiad

Beilstein J. Nanotechnol. 2018, 9, 1686–1694, doi:10.3762/bjnano.9.160

• TEM since some layers could be viewed via the bended NSs. Figure 3d is a filtered HRTEM image showing evidence of MoS2 NS stacking defects highlighted by the arrows. These defects are inherent to the fabrication process. This NSs stacking configuration could exhibit interesting properties in membrane

• sulfurization of a 50 nm Mo film at 850 °C on SiO2/Si substrates: (a) Plane-view HRTEM image; (b) high-magnification TEM image; (c) FFT pattern of panel (a); (d) filtered HRTEM image indicating the presence of sheet stacking defects (indicated by orange arrows). MoS2 sample grown by double sulfurization of a 50

Nitrogen-doped carbon nanotubes coated with zinc oxide nanoparticles as sulfur encapsulator for high-performance lithium/sulfur batteries

• Yan Zhao,
• Zhengjun Liu,
• Liancheng Sun,
• Yongguang Zhang,
• Yuting Feng,
• Xin Wang,
• Indira Kurmanbayeva and
• Zhumabay Bakenov

Beilstein J. Nanotechnol. 2018, 9, 1677–1685, doi:10.3762/bjnano.9.159

• observed in the HRTEM image of the ZnO@NCNT composite (Figure 3a), which correspond to the (002) and (101) planes of ZnO, respectively. Figure 3b shows the selected area electron diffraction (SAED) patterns of the ZnO@NCNT composite. The diffraction rings represent different planes of ZnO, revealing the

• ). Scanning electron microscopy (SEM) images were collected on a Hitachi S4800 scanning electron microscope. High-resolution transmission electron microscopy (HRTEM) images were recorded with a JEOL JEM-2100F transmission electron microscope. The elements distribution images were detected by using TEM at 160

• a battery testing system (Neware, Shenzhen) in the potential range of 1–3 V vs Li/Li+. XRD patterns of S, ZnO@NCNT and S/ZnO@NCNT composite. TGA curve of the S/ZnO@NCNT composite. (a) HRTEM image; (b) SAED patterns; (c) TEM image; (d–g) EDX mapping images of the ZnO@NCNT composite. (a) SEM image; (b

Sheet-on-belt branched TiO₂(B)/rGO powders with enhanced photocatalytic activity

• Huan Xing,
• Wei Wen and
• Jin-Ming Wu

Beilstein J. Nanotechnol. 2018, 9, 1550–1557, doi:10.3762/bjnano.9.146

• corresponding to polycrystalline TiO2(B). The high-resolution TEM (HRTEM) image demonstrated in Figure 3c shows parallel fringes with a neighboring distance of ≈0.545 nm, corresponding to the (200) plane of TiO2(B) and distance of ≈0.382 nm, which is attributed to the (110) plane of TiO2(B). The cross-angle of

• vibrational modes of the TiO2(B) phase [28], which is in agreement with the XRD and HRTEM results. A weak Raman peak located at 1657 cm−1 can be discerned in the TGN sample, which corresponds to the G band (graphitized carbon), confirming the existence of graphene in the powders [31]. The peak intensity

• , b) TEM and (c) HRTEM image of sample TGN-branch 4 h. The inset in (b) shows the corresponding SAED pattern. Raman spectra of samples TGN and TGN-branch 4 h recorded over the range of (a) 100–1000 cm−1 and (b) 1000–2000 cm−1. (a) XPS survey spectrum and core level XPS spectra of (b) Ti 2p, (c) C 1s

Ag₂WO₄ nanorods decorated with AgI nanoparticles: Novel and efficient visible-light-driven photocatalysts for the degradation of water pollutants

• Shijie Li,
• Shiwei Hu,
• Wei Jiang,
• Yanping Liu,
• Yu Liu,
• Yingtang Zhou,
• Liuye Mo and
• Jianshe Liu

Beilstein J. Nanotechnol. 2018, 9, 1308–1316, doi:10.3762/bjnano.9.123

• −, small AgI nanoparticles (diameter: 20–40 nm) are uniformly coated on the surface of Ag2WO4 nanorods, signifying the formation of the AgI/Ag2WO4 core–shell heterostructure. To more clearly observe the microstructure of the AgI/Ag2WO4 composite, the TEM and high-resolution TEM (HRTEM) images are shown in

• Figure 2e,f. It can be seen that many nanoparticles are deposited on the surface of the Ag2WO4 nanorods (Figure 2e). The HRTEM image (Figure 2f) shows that one set of lattice fringes can be observed. The lattice fringe of 0.23 nm matches well with the (220) plane of AgI. No lattice fringe correlated to

• scanning electron microscope (FE-SEM, Hitachi S–4800) and a high-resolution transmission electron microscope (HRTEM, JEOL JEM–2010F). Energy-dispersive X-ray (EDX) spectroscopy coupled with SEM was employed to identify the chemical composition of the sample. UV–vis diffuse reflectance spectra (UV–vis DRS

Single-crystalline FeCo nanoparticle-filled carbon nanotubes: synthesis, structural characterization and magnetic properties

• Rasha Ghunaim,
• Maik Scholz,
• Christine Damm,
• Bernd Rellinghaus,
• Rüdiger Klingeler,
• Bernd Büchner,
• Michael Mertig and
• Silke Hampel

Beilstein J. Nanotechnol. 2018, 9, 1024–1034, doi:10.3762/bjnano.9.95

• on carbon tape. Transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) measurements and nanobeam electron diffraction patterns were performed using a Tecnai F30 (FEI) instrument operated at 300 kV or a Tecnai G2 (FEI) instrument operated at 200 kV. Both were

• nanoparticles of Fe50Co50@CNT was investigated by HRTEM measurements. Surprisingly, some particles in the as-prepared sample showed high crystallinity, even without annealing, as shown in Figure 3c. The crystallinity of the core material was confirmed by the appearance of the lattice fringes (marked by short

• nanoparticles The crystallinity of the Fe–Co nanoparticles was verified by powder XRD, HRTEM and nanobeam electron diffraction. No indication of oxide or carbide phases were detected, which means that the synthesis approaches guarantee CNTs as protective shells for the MNPs. The additional annealing step is

Graphene composites with dental and biomedical applicability

• Sharali Malik,
• Felicite M. Ruddock,
• Adam H. Dowling,
• Kevin Byrne,
• Wolfgang Schmitt,
• Ivan Khalakhan,
• Yoshihiro Nemoto,
• Hongxuan Guo,
• Lok Kumar Shrestha,
• Katsuhiko Ariga and
• Jonathan P. Hill

Beilstein J. Nanotechnol. 2018, 9, 801–808, doi:10.3762/bjnano.9.73

• 0.47 eV). High resolution spectra for the core level C 1s and O 1s were recorded in 0.05 eV steps. An electron flood gun was used during the measurements to prevent sample charging. The FLG material was also characterized by TEM, HRTEM (Jeol ARM at 80 kV) and helium ion microscopy (HeIM, Zeiss Orion at

• ) TEM overview of FLG and d) HRTEM detail of FLG showing a single layer. a) and b) AFM detail and profile of a multi-layer graphene (MLG) flake, ca. 10 graphene layers, c) and d) AFM detail and profile of a few-layer graphene (FLG) flake, ca. 1–6 graphene layers. a) GI composite after strength testing

Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity

• Mengyuan Zhang,
• Jiaqian Qin,
• Pengfei Yu,
• Bing Zhang,
• Mingzhen Ma,
• Xinyu Zhang and
• Riping Liu

Beilstein J. Nanotechnol. 2018, 9, 789–800, doi:10.3762/bjnano.9.72

• BiOI nanolayers. As pure ZnO, sample B-6 (Figure 2c) presents nanospheres with a highly smooth surface, which is possibly caused by calcination [38]. In order to make further investigations on the ZnO/BiOI heterostructure, TEM and HRTEM analysis were applied. Figure S2a, Supporting Information File 1

• and HRTEM images on the different edges of sample B-3 are displayed in Figure 3a–c, where lattice fringe spacings are 0.30 and 0.28 nm, respectively, matching well with the interplanar distances of the (102) plane in BiOI and the (100) plane in ZnO. These results further validate the formation of

Surface-plasmon-enhanced ultraviolet emission of Au-decorated ZnO structures for gas sensing and photocatalytic devices

• T. Anh Thu Do,
• Truong Giang Ho,
• Thu Hoai Bui,
• Quang Ngan Pham,
• Hong Thai Giang,
• Thi Thu Do,
• Duc Van Nguyen and
• Dai Lam Tran

Beilstein J. Nanotechnol. 2018, 9, 771–779, doi:10.3762/bjnano.9.70

• ), and HRTEM (JEOL2100). UV–vis analysis was carried out on a spectrophotometer (FLAME-S, Ocean Optics, Inc.). PL measurements (IK3301R-G, Kimmon Koha) were performed at room temperature using a He–Cd laser source (325 nm). For TRPL decay measurement of ZnO structures, a time-correlated single photon

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

• -thermal (PT) route compared to other methods such as impregnation (IM) and physical mixture (PM). The CeO2/CNT-PT has smaller and narrower ceria particle size distribution (2 to 14 nm) than CeO2/CNT-IM (6 to 20 nm) based on the TEM and HRTEM analysis. In addition, NH3-TPD analysis was carried out in order

• MnO2 crystalline phase at high loading (1.8%). This suggests that the Mn–Ce particles were evenly distributed on the CNTs. The TEM images specified that the size of Mn–Ce particles were very small crystals and well dispersed on the surface of the MWCNTs. Further analysis was conducted using HRTEM in

• the NO removal activity. 0.5 Mn/(Mn + Ce) molar ratio was found to be the optimum loading amount for Mn–CeOx/CNT catalyst preparation. From the HRTEM images, an uneven shape and fuzzy crystal lattice was identified on the metal nanoflakes suggesting that the Mn–CeOx/CNT catalyst is amorphous in

Cyclodextrin-assisted synthesis of tailored mesoporous silica nanoparticles

• Fuat Topuz and
• Tamer Uyar

Beilstein J. Nanotechnol. 2018, 9, 693–703, doi:10.3762/bjnano.9.64

• particles with a mean size of 185 nm, suggesting that the addition of β-CD leads to the formation of larger particles (Figure 2a). HRTEM images of the respective particles revealed a mesoporous structure in the particles (Figure 2b,c (vii)). Since the particles do not display any aggregation, the CTAC

• the particles synthesized at 0.75% (w/v) β-CD, MSNs prepared at 0.25% (w/v) revealed particle aggregates (Figure S4, Supporting Information File 1). HRTEM images of the particles evidenced porosity in both particles. The nanoparticles were also synthesized at various CTAC concentrations at the

• with a mean pore size of 0.78 nm while the surface area of the respective particles was 764.38 m2/g. This is in line with the HRTEM analysis of the respective particles (Figure 3f). Even though the pore size is significantly smaller, the pore volume was increased from 0.791 to 0.853 cm3/g. The presence

Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation

• Ashish Kumar,
• Christian Schuerings,
• Suneel Kumar,
• Ajay Kumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2018, 9, 671–685, doi:10.3762/bjnano.9.62

• ) measurements were performed by using the same SEM instrument in order to find the elemental constituents of the samples. More detailed investigations on the morphology were obtained by transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) studies. Images were recorded on a Technai G 20 (FEI) S

• Figure S1, Supporting Information File 1 show the presence of all the constituent elements. The TEM images of g-C3N4, CT and CTCN heterojunction are presented in Figure 5. Pure g-C3N4 exhibits a 2D lamellar sheet-like morphology (Figure 5a). The HRTEM image of g-C3N4 shows lattice fringes with 0.325 nm

Sugarcane juice derived carbon dot–graphitic carbon nitride composites for bisphenol A degradation under sunlight irradiation

• Lan Ching Sim,
• Jing Lin Wong,
• Chen Hong Hak,
• Jun Yan Tai,
• Kah Hon Leong and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2018, 9, 353–363, doi:10.3762/bjnano.9.35

• chemical composition of samples was analyzed by XPS (PHI Quantera II, Ulvac-PHI, Inc.) with an Al Kα radiation source. High resolution transmission electron microscope (HRTEM, FEI-TECNAI F20) images were obtained at 200 kV. PL spectra of CDs solution were acquired with a PL spectrophotometer (Perkin Elmer

• ) HRTEM image of CD/g-C3N4(0.5). The insets of (b) and (e) show the energy-dispersive X-ray spectroscopy (EDS) results and particle size distribution of CDs, respectively. (a) XRD patterns and (b) FTIR spectra of g-C3N4, CD/g-C3N4(0.1), CD/g-C3N4(0.2), and CD/g-C3N4(0.5). (a) The absorption spectrum of