Upscaling the urea method synthesis of CoAl layered double hydroxides

• Camilo Jaramillo-Hernández,
• Víctor Oestreicher,
• Martín Mizrahi and
• Gonzalo Abellán

Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76

• anions (Figure 1B). In the case of the reference x1, the spectrum displays a broad signal at ca. 3400 cm−1, which corresponds to the OH stretching vibrations typically attributed to interlayer water molecules, as confirmed by the extra signal at 1600 cm−1 (water bending mode). The presence of carbonate

• oxidative (air) atmospheres was measured through thermogravimetric analysis (TGA). Typically, the decomposition of layered hydroxide structures consists of at least two main mass loss steps. The first, below 200 °C, is related to the release of physisorbed and interlayer water. The second one consists of

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

• cm−1 is characteristic of iron oxides, and represents the stretching vibration of Fe–O bond [53][54]. The peaks at 1640 cm−1 and 3400 cm−1 originate from interlayer water: the former is assigned H–O–H bending vibrations, and the latter to O–H stretching vibrations [53][54]. The peak at around 820 cm

A novel polyhedral oligomeric silsesquioxane-modified layered double hydroxide: preparation, characterization and properties

• Xianwei Zhang,
• Zhongzhu Ma,
• Hong Fan,
• Carla Bittencourt,
• Jintao Wan and
• Philippe Dubois

Beilstein J. Nanotechnol. 2018, 9, 3053–3068, doi:10.3762/bjnano.9.284

• stretching of the metal hydroxide layer and interlayer water molecules. Another band characteristic of the interlayer water is shown in the broad and weak peak around 1622 cm−1 in spectrum of NLDH, which is covered by the strong absorption bands of carboxylic ions and amide groups in the case of OLDH. As for

• . In contrast, the LDH modified with OCPS seems to have a denser interlayer packing. Previous literature suggests that the intercalation with linear organic molecules, e.g., surfactants, into pristine LDH can significantly weaken the hydrogen-bonding interactions between interlayer water, interlayer

• anions and the metal-hydroxide sheets. This largely reduces the contribution of the water layer accommodated in the interlayer region to the basal spacing [15][19][33]. Here, it is proposed that the less strongly bound interlayer water, which is further verified later by TGA results, might be another

Co-intercalated layered double hydroxides as thermal and photo-oxidation stabilizers for polypropylene

• Qian Zhang,
• Qiyu Gu,
• Fabrice Leroux,
• Pinggui Tang,
• Dianqing Li and
• Yongjun Feng

Beilstein J. Nanotechnol. 2018, 9, 2980–2988, doi:10.3762/bjnano.9.277

• OH groups of interlayer water molecules and brucite-like LDH layers. The band at 421 cm−1 is attributed to O–M–O lattice vibrations in LDH, which further proves the formation of a LDH platelet structure. Moreover, for HALS-Ca2Al-LDH and MP-Ca2Al-LDH, the characteristics stretching vibration bands of

• ′-Ca2Al-LDHs analyzed by CHN elemental analysis for the organic moieties and ICP atomic emission spectrometry for metal cations. The content of interlayer water is determined from the mass loss between 100 and 200 °C in the TG curves (Figure 5a). The fractions of HALS and MP anions are calculated based on

Nanostructure-induced performance degradation of WO₃·nH₂O for energy conversion and storage devices

• Zhenyin Hai,
• Mohammad Karbalaei Akbari,
• Zihan Wei,
• Danfeng Cui,
• Chenyang Xue,
• Hongyan Xu,
• Philippe M. Heynderickx,
• Francis Verpoort and
• Serge Zhuiykov

Beilstein J. Nanotechnol. 2018, 9, 2845–2854, doi:10.3762/bjnano.9.265

• layered transition metal oxides. Keywords: 2D layered oxides; interlayer water; van der Waals interaction; WO3·nH2O; Introduction Within the less than 20 years since the successful exfoliation of atomically thin graphene, 2D layered nanomaterials have been contributing greatly to the advances of

• ) [40] and orthorhombic WO3·H2O (JCPDS No. 43-0679) [41], which are both layered structures as illustrated in Figure 1b and Figure 1c, respectively. The structural difference between these two components is the number of interlayer water molecules. For the samples synthesized at 100 and 120 °C, only WO3

• ·H2O (JCPDS no. 43-0679) was measured with two main peaks corresponding to (020) and (111) as some of the interlayer water disappeared [41]. However, the dominant facet changed from (020) to (111) as the synthesis temperature increased. Moreover, for the samples synthesized at 150 °C, the full width at

Controlled supramolecular structure of guanosine monophosphate in the interlayer space of layered double hydroxide

• Gyeong-Hyeon Gwak,
• Istvan Kocsis,
• Yves-Marie Legrand,
• Mihail Barboiu and
• Jae-Min Oh

Beilstein J. Nanotechnol. 2016, 7, 1928–1935, doi:10.3762/bjnano.7.184

• attributed to breaking intermolecular interaction of interlayer GMP as well as evaporating interlayer water molecules. Interlayer water was evaporated from the DSC of pristine LDH at around 210 °C with an enthalpy change of ≈40 kJ/mol, which was subtracted from the endothermic enthalpy of GL hybrids. The

• ) and GL-R (Figure 6a, line d) showed similar IR bands compared with GMP only, although the bands in the range 1550–1800 cm−1 could not be separated in detail due to the merging with the δ-mode of interlayer water (1640 cm−1). Particle morphologies of GL hybrids are displayed in Figure 6b. Both images

Effective intercalation of zein into Na-montmorillonite: role of the protein components and use of the developed biointerfaces

• Ana C. S. Alcântara,
• Margarita Darder,
• Pilar Aranda and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2016, 7, 1772–1782, doi:10.3762/bjnano.7.170

• amount of intercalated protein. This observation points out to the existence of hydrogen bonding interactions between such groups of zein and the interlayer water molecules in the clay [38]. The presence of interactions between the protein and the MMT clay is also confirmed by the displacement to lower