Nanomaterials for photocatalysis and applications in environmental remediation and renewable energy

• Viet Van Pham and
• Wee-Jun Ong

Beilstein J. Nanotechnol. 2023, 14, 722–724, doi:10.3762/bjnano.14.58

• with various morphologies demonstrated many preeminent features in the above applications. In detail, the MoS2 with a honeycomb-like structure was first synthesized by an electrochemical route and applied in dye-sensitized solar cells [19], which expressed a higher applicability than that of other

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

• Nirmalendu S. Mishra and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

• boron (B) and nitrogen (N) atoms in equal stoichiometry in a honeycomb-like arrangement comparable to that of graphene [1][2][3]. Its interlayer stacking consists of a sandwich-type arrangement of B and N atoms. The N atom is more electronegative than the B atom, leading to polarization and localization

Influence of thickness and morphology of MoS₂ on the performance of counter electrodes in dye-sensitized solar cells

• Lam Thuy Thi Mai,
• Hai Viet Le,
• Ngan Kim Thi Nguyen,
• Van La Tran Pham,
• Thu Anh Thi Nguyen,
• Nguyen Thanh Le Huynh and
• Hoang Thai Nguyen

Beilstein J. Nanotechnol. 2022, 13, 528–537, doi:10.3762/bjnano.13.44

• disulfide (MoS2) was prepared on substrates coated with fluorine-doped tin oxide (FTO) to substitute the platinum counter electrode (CE) for dye-sensitized solar cells (DSSCs). Herein, we synthesized layered and honeycomb-like MoS2 thin films via the cyclic voltammetry (CV) route. Thickness and morphology

• of the MoS2 thin films were controlled via the concentration of precursor solution. The obtained results showed that MoS2 thin films formed at a low precursor concentration had a layered morphology while a honeycomb-like MoS2 thin film was formed at a high precursor concentration. Both types of MoS2

• conventional Pt/FTO CE (15.3 mA·cm−2). This work reports for the first time the possibility to obtain a honeycomb-like MoS2 thin film morphology by the CV method and investigates the effect of film structure on the electrocatalytic activity and photovoltaic performance of CEs for DSSC application. Keywords

pH-mediated control over the mesostructure of ordered mesoporous materials templated by polyion complex micelles

• Emilie Molina,
• Mélody Mathonnat,
• Jason Richard,
• Patrick Lacroix-Desmazes,
• Martin In,
• Philippe Dieudonné,
• Thomas Cacciaguerra,
• Corine Gérardin and
• Nathalie Marcotte

Beilstein J. Nanotechnol. 2019, 10, 144–156, doi:10.3762/bjnano.10.14

• Figure 2a, which evolved from long-range ordered 2D-hexagonal (4.5 ≤ pH < 5.5) to a less-ordered worm-like/lamellar mixture (5.5 ≤ pH ≤ 6.9) to a short-range ordered honeycomb-like arrangement of cylindrical mesopores. For the sake of clarity, in the following, the influence of the synthesis pH on the

• -range ordered cylindrical mesopores presenting honeycomb-like arrangement of the materials synthesized at pH 7.4 and 7.9, thus supporting the role of the weaker interaction between PEO and silica at those pH. It is worth noting that the involvement of mediating cations ensuring the interface neutrality

Nanoscale characterization of the temporary adhesive of the sea urchin Paracentrotus lividus

• Ana S. Viana and
• Romana Santos

Beilstein J. Nanotechnol. 2018, 9, 2277–2286, doi:10.3762/bjnano.9.212

• , the first nanoscale characterization of sea urchin temporary adhesives was performed using atomic force microscopy (AFM). Results: The adhesive topography was similar under dry and native (seawater) conditions, which was comprised of a honeycomb-like meshwork of aggregated globular nanostructures. In

• tested conditions, the adhesive material consisted of a meshwork formed by aggregated globular nanostructures. At low resolution, the meshwork has a honeycomb-like appearance (Figure 3a,b), but at higher resolution, it was possible to distinguish globular nanostructures with diameters ranging from 20 to

• pull its adhesive apart. Conclusion The adhesive footprints of the sea urchin Paracentrotus lividus were characterized for the first time at the nanoscale level. The adhesive topography was similar in dry and native conditions being composed of a honeycomb-like meshwork of interconnected threads of

Comparing postdeposition reactions of electrons and radicals with Pt nanostructures created by focused electron beam induced deposition

• Julie A. Spencer,
• Michael Barclay,
• Miranda J. Gallagher,
• Robert Winkler,
• Ilyas Unlu,
• Yung-Chien Wu,
• Harald Plank,
• Lisa McElwee-White and
• D. Howard Fairbrother

Beilstein J. Nanotechnol. 2017, 8, 2410–2424, doi:10.3762/bjnano.8.240

• these changes were fairly modest (Figure 2), but more extensive structural transformations were observed in the samples depicted in Figures 3–5. In general these structural transformations can be characterized by an increase in porosity and the formation of a honeycomb-like structure, although in one

Two-dimensional carbon-based nanocomposites for photocatalytic energy generation and environmental remediation applications

• Suneel Kumar,
• Ashish Kumar,
• Ashish Bahuguna,
• Vipul Sharma and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2017, 8, 1571–1600, doi:10.3762/bjnano.8.159

• thin layer to form a 2D hexagonal honeycomb-like structure [42]. The π-conjugated structure in graphene provides ultrafast electron transfer (200,000 cm2·V−1·s−1), very high specific surface area (2600 m2·g−1), and high thermal conductivity (5000 W·w−1·K−1) [43]. In addition to this, graphene possesses

Fast diffusion of silver in TiO₂ nanotube arrays

• Wanggang Zhang,
• Yiming Liu,
• Diaoyu Zhou,
• Hui Wang,
• Wei Liang and
• Fuqian Yang

Beilstein J. Nanotechnol. 2016, 7, 1129–1140, doi:10.3762/bjnano.7.105

• round imprints are observed on the surface of the Ti foil. The SEM image of Figure 2d reveals the closed honeycomb-like structure of the bottom surface of the pure TiO2 nanotube arrays, similar to the structure prepared by the one-step anodization process (see Figure S1d in Supporting Information File 1

Moisture harvesting and water transport through specialized micro-structures on the integument of lizards

• Philipp Comanns,
• Christian Effertz,
• Florian Hischen,
• Konrad Staudt,
• Wolfgang Böhme and
• Werner Baumgartner

Beilstein J. Nanotechnol. 2011, 2, 204–214, doi:10.3762/bjnano.2.24

• (Phrynocephalus arabicus) and the Texas horned lizard (Phrynosoma cornutum). All three lizards have a honeycomb like micro ornamentation on the outer surface of the scales and a complex capillary system in between the scales. By investigation of individual scales and by producing and characterising polymer

• replicas of the reptiles' integuments, we found that the honeycomb like structures render the surface superhydrophilic, most likely by holding a water film physically stable. Furthermore, the condensation of air humidity is improved on this surface by about 100% in comparison to unstructured surfaces. This

• ornamentation (Figure 4D). On the outer part, i.e., closer to the edge of the scale honeycomb like structures are visible on the outer surface. These structures are a more or less common feature of the scales of all three investigated species (Figure 5). Measurements with the SEM revealed that Moloch horridus