A review of metal-organic frameworks and polymers in mixed matrix membranes for CO₂ capture

• Charlotte Skjold Qvist Christensen,
• Nicholas Hansen,
• Mahboubeh Motadayen,
• Nina Lock,
• Martin Lahn Henriksen and
• Jonathan Quinson

Beilstein J. Nanotechnol. 2025, 16, 155–186, doi:10.3762/bjnano.16.14

• interact with CO2, achieving excellent CO2 adsorption capacity and preferential CO2 adsorption over other gas molecules such as N2 or CH4. Figure 2 depicts examples of the separation strategies commonly employed in MOF research. The first approach to promote CO2 selectivity involves molecular sieving [54

• ]. This strategy capitalizes on the combination of high surface areas and the tunable nature of pore openings and channels of MOFs, achieving selective CO2 adsorption by size exclusion [55], illustrated in Figure 2a. The kinetic diameter of competing adsorbates is the most commonly quoted metric for size

• flexibility, which may undergo dynamic changes in response to external stimuli, such as pressure and temperature. This characteristic allows for gated CO2 adsorption under specific conditions [44], which presents itself as a unique strategy to selectively control CO2 separation in gas mixtures. For instance

Facile synthesis of Fe-based metal–organic frameworks from Fe₂O₃ nanoparticles and their application for CO₂/N₂ separation

• Van Nhieu Le,
• Hoai Duc Tran,
• Minh Tien Nguyen,
• Hai Bang Truong,
• Toan Minh Pham and
• Jinsoo Kim

Beilstein J. Nanotechnol. 2024, 15, 897–908, doi:10.3762/bjnano.15.74

• resulting material, resulting in a high yield of 81% and an impressive BET surface area of 1365.4 m2·g−1. At 25 °C and 1 bar, M-100Fe@Fe2O3#1.80 showed a CO2 adsorption capacity of 1.10 mmol·g−1 and an IAST-predicted CO2/N2 selectivity of 18, outperforming conventional adsorbents in CO2/N2 separation

• for 2 h, followed by an additional 12 h at 150 °C in a glass tube before naturally cooling to ambient temperature. To assess the adsorbent’s reusability, five cycles of CO2 adsorption and desorption were conducted at 25 °C. The adsorbent was refreshed for 2 h at 100 °C under vacuum for each cycle

• 1.10 to 1.18 mmol·g−1 at 25 °C and 100 kPa. Taking into account the balance between CO2 adsorption performance and the quantity of H3BTC consumed, M-100Fe@Fe2O3#1.80 stands out as the preferred sample, exhibiting a CO2 uptake capacity of 1.1 mmol·g−1 and a CO2/N2 selectivity of 18 at 25 °C and 100 kPa

Metal-organic framework-based nanomaterials for CO₂ storage: A review

• Ha Huu Do,
• Iqra Rabani and
• Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 964–970, doi:10.3762/bjnano.14.79

• -organic frameworks (MOFs) promising contenders for CO2 uptake. This review commences by discussing recent advancements in MOFs with diverse adsorption sites, encompassing open metal sites and Lewis basic centers. Next, diverse strategies aimed at enhancing CO2 adsorption capabilities are presented

• ]. Therefore, identification and development of durable and efficient adsorbents are critical to the successful implementation of CCS. Until now, various classes of materials have been investigated for CO2 adsorption, such as covalent organic frameworks, molecular sieves, activated carbon, and metal-organic

• [16][17][18][19]. However, several studies have indicated that the surface area is not the sole determining factor in CO2 storage at low pressure. For instance, despite having a lower surface area than MOF-177, HKUST-1 exhibited a greater CO2 adsorption capacity of 4.16 mmol·g−1 at 298 K and 1 bar [20

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

• ). Finally, textural properties were also evaluated by N2 and CO2 adsorption–desorption isotherms to observe possible changes in the surface area of the samples. Figure 5C shows the N2 isotherms at 77 K. The samples present type-IV adsorption isotherms (according to IUPAC classification) with an H3

Ni, Co, Zn, and Cu metal-organic framework-based nanomaterials for electrochemical reduction of CO₂: A review

• Ha Huu Do and
• Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 904–911, doi:10.3762/bjnano.14.74

• ) indicated superior catalytic activity compared to MIL-125(Ti). Notably, MOF-210 has established a remarkable record in CO2 adsorption among all porous materials, boasting an adsorption capacity of 2870 mg·g−1 [34]. Such properties facilitate favorable interactions between CO2 molecules and catalytic sites

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

• Vishal Dutta,
• Ankush Chauhan,
• Ritesh Verma,
• C. Gopalkrishnan and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

• times greater CO2 adsorption and enhanced light absorption. The enhanced properties were reflected in the photocatalytic activity, resulting in a rate of methanol synthesis of 75 mol·g−1·h−1, which was much greater than the rate produced by the unaltered Bi2WO6. As a result of the decrease in

Interfacial nanoarchitectonics for ZIF-8 membranes with enhanced gas separation

• Season S. Chen,
• Zhen-Jie Yang,
• Chia-Hao Chang,
• Hoong-Uei Koh,
• Sameerah I. Al-Saeedi,
• Kuo-Lun Tung and
• Kevin C.-W. Wu

Beilstein J. Nanotechnol. 2022, 13, 313–324, doi:10.3762/bjnano.13.26

• membranes synthesized in this work (Figure 8b). The type of MOF has an influence on the gas separation performance, for instance, CAU-1 exhibits a higher CO2 adsorption capacity than ZIF-8 [45], which may lead to a higher gas permeance. Compared with MOF mixed-matrix membranes (MMMs), ZIF-8 membranes

Prediction of Co and Ru nanocluster morphology on 2D MoS₂ from interaction energies

• Cara-Lena Nies and
• Michael Nolan

Beilstein J. Nanotechnol. 2021, 12, 704–724, doi:10.3762/bjnano.12.56

• also have the strongest metal–metal interaction energies (Table 3). This is due to Co–Co bonding, which is present exclusively for these Co2 adsorption modes due to the decreased distance between atoms compared to equivalent sites. We also observe large addition energies for these structures, showing

•  4D) is the least favourable configuration for Ru2, as well, although no rearrangements or migration occur here. Similar to Co2, adsorption of Ru at equivalent separated sites atop_Mo (Figure 4E) is the second most favourable of the equivalent Ru2 adsorptions. The large distortions of the MoS2 ML for

Gas sorption porosimetry for the evaluation of hard carbons as anodes for Li- and Na-ion batteries

• Yuko Matsukawa,
• Fabian Linsenmann,
• Maximilian A. Plass,
• George Hasegawa,
• Katsuro Hayashi and
• Tim-Patrick Fellinger

Beilstein J. Nanotechnol. 2020, 11, 1217–1229, doi:10.3762/bjnano.11.106

• particle size and the abundant micropores in the samples as confirmed by carbon dioxide (CO2) sorption measurements. CO2 and water vapor (H2O) sorption were carried out at 273.15 K (0 °C) and 293.15 K (20 °C), respectively. From the results of Kr and CO2 adsorption, the specific surface area (SSA) was

• calculated using the Brunauer–Emmett–Teller (BET) method. The pore size distribution was obtained from CO2 adsorption measurements using the Monte Carlo method. The isotherms of H2O adsorption were used to estimate the pore size distribution using the equation reported by Wang et al. [34], which is based on

• from Kr (a, c) and CO2 (b,d) adsorption isotherms of lithium (a, b) and sodium (c, d). Capacities (reversible: red circle, irreversible: blue diamond, Y-axis) and Coulombic efficiencies (gray asterisk, R-axis) against cumulative pore volumes (obtained from CO2 adsorption by Monte Carlo method (a, c

Charge-transfer interactions between fullerenes and a mesoporous tetrathiafulvalene-based metal–organic framework

• Manuel Souto,
• Joaquín Calbo,
• Samuel Mañas-Valero,
• Aron Walsh and
• Guillermo Mínguez Espallargas

Beilstein J. Nanotechnol. 2019, 10, 1883–1893, doi:10.3762/bjnano.10.183

• linkers was found to be 1.1 V (vs Ag/AgCl) [53] and the redox potential of C60 is −0.33 V (vs Ag/AgCl). Gas sorption measurements The porosity of C60@MUV-2 was studied by means of N2 and CO2 adsorption isotherm measurements (Figure 4). The measurement of nitrogen at 77 K yielded a combination of type-I

• on the solid state by dispersing the crystals in KBr pellets. Nitrogen adsorption isotherms were measured using a TriStar II PLUS apparatus (Micromeritics) at 77 K. The BET surface area was calculated by using the Brunauer–Emmett–Teller equation. The high-pressure CO2 adsorption isotherms were

• the samples in KBr pellets. a) Nitrogen adsorption isotherms at 77 K and b) high-pressure CO2 adsorption isotherms at 298 K, on MUV-2 (black) and C60@MUV-2 (red). a) Minimum-energy crystal structure calculated for conformations A and B of host–guest C60@MUV-2 at the PBEsol level under periodic

Processing nanoporous organic polymers in liquid amines

• Jeehye Byun,
• Damien Thirion and
• Cafer T. Yavuz

Beilstein J. Nanotechnol. 2019, 10, 1844–1850, doi:10.3762/bjnano.10.179

• adsorption [28]. In a customized gravimetric analysis setup (Supporting Information File 1, Figure S3), COP-100 and COP-100-Film were tested for CO2 uptake, where 9% and 2.4% of CO2 sorption were observed in 3 h at 40 °C, respectively (Figure 6a). Despite the far worse CO2 adsorption performance compared to

• hydroxylated structure, respectively. (a) Structure of COP-600 synthesized by Knoevenagel-like condensation. Solubility of COP-600 in EDA compared to COP-100; (b) addition of EDA at r.t., (c) heat treatment at 100 °C for 1 min and (d) for 1 h. (a) Gravimetric CO2 adsorption isotherm of COP-100 and COP-100-Film

• amount changed. Typically, after addition of 10 equiv EDA, the COP-100-Film exhibited a nitrogen content of 20% by elemental analysis, indicating about an increase of nitrogen content by about 76% compared to the original COP-100. The COP-100-Film with higher nitrogen content might be eligible for CO2

Playing with covalent triazine framework tiles for improved CO₂ adsorption properties and catalytic performance

• Giulia Tuci,
• Andree Iemhoff,
• Housseinou Ba,
• Lapo Luconi,
• Andrea Rossin,
• Vasiliki Papaefthimiou,
• Regina Palkovits,
• Jens Artz,
• Cuong Pham-Huu and
• Giuliano Giambastiani

Beilstein J. Nanotechnol. 2019, 10, 1217–1227, doi:10.3762/bjnano.10.121

• . Keywords: covalent triazine frameworks; CO2 adsorption; CO2/N2 selectivity; dehydrogenation catalysis; ionothermal conditions; Introduction Recent years have witnessed an increasing interest in carbon-based nanomaterials as functional devices for energy-related applications [1]. Their unique properties

• total pore volume up to 1.31 cm3·g−1 (Table 1, entries 1 and 2). Although their structural properties sound promising for gas-adsorption applications, their N content remains moderate. As N content and related surface basicity play a key role in the CO2 adsorption capacity of CTF samples, we have

• conditions. CO2 adsorption properties of CTF1–5 The wide morphological and chemical diversity of the as-synthesized CTF samples prompted us to evaluate their CO2 adsorption and separation capacities. To this aim, all materials were firstly activated under ultrahigh vacuum and CO2 isotherms were recorded at T

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

• submicrometer particles, and its good CO2 adsorption capacity altogether maintaining good water stability [29][30][31]. In addition, our experience on the fabrication of MOF LB films has shown that hydrophilic MOFs can lead to LB films of good quality (e.g., MIL-101(Cr) [21] and MIL-96(Al) [26]) and UiO-66-COOH

• that were further characterized. CO2 adsorption studies In order to study the effect of the surfactant on the adsorption capacity of the MOF sMPs, CO2 adsorption studies were performed using the quartz crystal microbalance (QCM)-based setup described in the experimental section. Drop-cast films of the

• by the change in the resonant frequency after the deposition. The adsorption of CO2 was determined from the frequency changes upon varying the CO2 content in the gas stream. Figure 3 shows CO2 adsorption isotherms obtained for drop-cast samples of pure UiO-66-COOH(Zr) sMPs and ODP and the mixture UiO

Mo-doped boron nitride monolayer as a promising single-atom electrocatalyst for CO₂ conversion

• Qianyi Cui,
• Gangqiang Qin,
• Weihua Wang,
• Lixiang Sun,
• Aijun Du and
• Qiao Sun

Beilstein J. Nanotechnol. 2019, 10, 540–548, doi:10.3762/bjnano.10.55

• parameters, such as C–O bond length (Figure 1b) and the angle (Figure 1c) of the CO2 molecule adsorbed onto the TM-doped BN. As shown in Figure 1a, there are significant differences in the CO2 adsorption on the various TM-doped BN monolayers, where the system with the more negative value of adsorption energy

Understanding the performance and mechanism of Mg-containing oxides as support catalysts in the thermal dry reforming of methane

• Nor Fazila Khairudin,
• Mohd Farid Fahmi Sukri,
• Mehrnoush Khavarian and
• Abdul Rahman Mohamed

Beilstein J. Nanotechnol. 2018, 9, 1162–1183, doi:10.3762/bjnano.9.108

• solution (NixMg(1−x)O) and could consequently enhance CO2 adsorption and Ni particle size. Moreover, the reduced Ni/MgO catalysts may result in a high distribution of Ni particles and may prevent the occurrence of particle sintering during DRM reactions. Therefore, this catalyst exhibits the potential for

• morphology, structure, and catalytic properties of the Ni–Ce/Mg–Al catalyst in DRM by Daza et al. [50], Ce and Mg are concluded to exert a synergistic effect on CO2 adsorption. Although the basic properties of Ce exert a significant effect on catalyst basicity, the bulk CeO2 possesses low basic properties

• in hydrothermal treatment time enhanced the basicity of the catalyst from the high exposure to the Mg phase. The strong basicity properties of Mg enhanced CO2 adsorption and suppressed carbon deposition via the reverse Boudouard reaction (C + CO2 ↔ 2CO). However, the core–shell structure became

Hierarchically structured nanoporous carbon tubes for high pressure carbon dioxide adsorption

• Julia Patzsch,
• Deepu J. Babu and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2017, 8, 1135–1144, doi:10.3762/bjnano.8.115

• Fisher. Raman spectroscopy was carried out using a LabRAM high-resolution microscope (Horiba Jobin Yvon, model HR 800). The excitation source was a 514.5 nm Ar laser. High pressure CO2 adsorption measurements were carried out in a self-built volumetric setup equipped with three pressure transducers in

• was further subjected to an in situ activation process by overnight heating in vacuum at a temperature of 150 °C. CO2 adsorption measurements were carried out at 25 °C and CO2 density values, for a given pressure and temperature, were obtained from the NIST database. As the errors tend to accumulate

• ultramicropores (<0.7 nm), while at high pressure, CO2 adsorption occurs on the supermicropores of the adsorbent. Since almost no change is observed in the adsorption isotherm at low pressure, and the decrease in adsorption is only observed at high pressure for 4, it is believed that the amount of supermicropores

Neutral and charged boron-doped fullerenes for CO₂ adsorption

• Suchitra W. de Silva,
• Aijun Du,
• Wijitha Senadeera and
• Yuantong Gu

Beilstein J. Nanotechnol. 2014, 5, 413–418, doi:10.3762/bjnano.5.49

• to reduce the global emissions of greenhouse gases. It is crucial to find suitable materials to achieve an efficient CO2 capture. Here we report our study of CO2 adsorption on boron-doped C60 fullerene in the neutral state and in the 1e−-charged state. We use first principle density functional

• calculations to simulate the CO2 adsorption. The results show that CO2 can form weak interactions with the BC59 cage in its neutral state and the interactions can be enhanced significantly by introducing an extra electron to the system. Keywords: adsorption; boron doping; CO2 capture; density functional

• , heterofullerenes also offer excellent tuneable chemical and physical properties [10]. Gas adsorption on heterofullerenes is an appealing subject. B. Gao et al. [11] studied CO2 adsorption on calcium decorated C60 fullerene and F. Gao et al. [12] studied O2 adsorption on nitrogen-doped fullerene. Boron-doped C60

Twofold role of calcined hydrotalcites in the degradation of methyl parathion pesticide

• Alvaro Sampieri,
• Geolar Fetter,
• María Elena Villafuerte-Castrejon,
• Adriana Tejeda-Cruz and
• Pedro Bosch

Beilstein J. Nanotechnol. 2011, 2, 99–103, doi:10.3762/bjnano.2.11

• of M2+ of some calcined HTs determine the efficiency in CO2 adsorption [25][26]. Calcined Ni2+-HT presents a higher electronegativity than Mg2+-HT. Hence, the Ni–Al mixed oxides have weak basic sites which are not strong enough to promote MP degradation. By contrast, the basic sites of the Mg–Al