Elucidating influences of defects and thermal treatments on CO2 capture of a Zr-based metal–organic framework

He, Shan; Li, Ling-Xiao; Zhang, Li-Tian; Zeng, Shanshan; Feng, Chunmei; Chen, Xiao-Xian; Zhou, Hao-Long; Huang, Xiao-Chun

doi:10.1016/j.cej.2023.147605

Cited by 5 publications

(4 citation statements)

References 62 publications

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“…It was found that CO 2 uptake of HCP-1 and HCP-2 is superior to several reported high-surface-area solid adsorbents, as shown in Table S2 …”

Section: Resultsmentioning

confidence: 89%

“…This remarkable adsorption potential probably rises due to a greater BET surface area and greater pore volume, which creates microporous characteristics, with narrow pore size distribution as well as phosphorus and nitrogen richness as promising indicators of high CO 2 adsorption capacity 47,48 It was found that CO 2 uptake of HCP-1 and HCP-2 is superior to several reported high-surface-area solid adsorbents, as shown in Table S2. 49 2.8.1. Isosteric Heat of Adsorption of CO 2 .…”

Section: Application and Mechanism Of Co 2 Adsorption On Hcp-1 And Hcp-2mentioning

confidence: 99%

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Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO₂ and I₂ Uptake

Raza,

Abid,

Areej

et al. 2024

ACS Appl. Polym. Mater.

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In this research, two types of metal-free organic−inorganic phosphazene based hybrid porous polymers (HPMs) enriched with phosphorus (P) and nitrogen (N) for gas sorption characteristics were reported. Cyclic phosphazenes were synthesized by condensation of biphenyl methanol with the hexachlorocyclophosphazenes (HCCPs) followed by cross-linking for the fabrication of porous and high surface area moiety designated as HCP-1. Whereas HCP-2 was synthesized with the replacement of polydichlorophosphazene (PDCP) chlorines with biphenyl methanol and later crosslinked in the same manner. Brunauer−Emmett−Teller surface areas of (SA BET s) of HCP-1 and HCP-2 were 482 and 323 m 2 g −1 , respectively, whereas pore size distribution was under 1.10 nm. The observation of a higher surface area of HCP-1 is strongly indicative of cyclic N and P long chain backbone [-N�P-]. HCP-1 with a high surface area represented high carbon dioxide (CO 2 ) adsorption (1.656 mmol g −1 with quantity adsorbed 37.13 cm 3 g −1 at 273 K/1 bar and 1.35 mmol g −1 with quantity adsorbed 30.37 cm 3 g −1 at 298 K/1 bar). HCP-2 with a low surface area showed moderate adsorption capacity (1.6 mmol g −1 with a quantity adsorbed 35.82 cm 3 g −1 at 273 K/1 bar and 1.26 mmol g −1 with a quantity adsorbed 28.36 cm 3 g −1 at 298 K/1 bar). The values of iodine uptake of HCP-1 and HCP-2 are 148 and 227 wt %, respectively, at 353 K. These results indicate a facile and convenient method to synthesize heteroatom-rich metal-free organic−inorganic phosphazene based hybrid porous polymers for CO 2 and I 2 sorption applications.

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“…It was found that CO 2 uptake of HCP-1 and HCP-2 is superior to several reported high-surface-area solid adsorbents, as shown in Table S2 …”

Section: Resultsmentioning

confidence: 89%

Section: Application and Mechanism Of Co 2 Adsorption On Hcp-1 And Hcp-2mentioning

confidence: 99%

Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO₂ and I₂ Uptake

Raza,

Abid,

Areej

et al. 2024

ACS Appl. Polym. Mater.

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“…Addressing these stability challenges is crucial for unlocking the full potential of these sophisticated materials for real-world applications in various industries as well as in daily life [ 22 , 23 , 24 , 25 , 26 , 27 ]. The stability of MOFs has been investigated through theoretical and experimental approaches [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ], and the effects of buffers, amino acids, and cell media on MOFs have been extensively examined [ 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Stability of Zr-Based UiO-66 Metal–Organic Frameworks in Basic Solutions

Kim,

Kang,

Cha

et al. 2024

Nanomaterials

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Although Zr-based metal–organic frameworks (MOFs) exhibit robust chemical and physical stability in the presence of moisture and acidic conditions, their susceptibility to nucleophilic attacks from bases poses a critical challenge to their overall stability. Herein, we systematically investigate the stability of Zr-based UiO-66 (UiO = University of Oslo) MOFs in basic solutions. The impact of 11 standard bases, including inorganic salts and organic bases, on the stability of these MOFs is examined. The destruction of the framework is confirmed through powder X-ray diffraction (PXRD) patterns, and the monitored dissolution of ligands from the framework is assessed using nuclear magnetic resonance (NMR) spectroscopy. Our key findings reveal a direct correlation between the strength and concentration of the base and the destruction of the MOFs. The summarized data provide valuable insights that can guide the practical application of Zr-based UiO-66 MOFs under basic conditions, offering essential information for their optimal utilization in various settings.

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“…It also has remarkable thermal stability; up to 300 °C, it does not make any change in its structure [21]. This stability makes UiO-66 a competent material for photocatalytic hydrogen generation [22][23][24]. However, the bandgap of UiO-66 (4 eV) is not favorable for visible light absorption.…”

Section: Introductionmentioning

confidence: 99%

Efficient Charge Transfer of p-n Heterojunction UiO-66-NH2/CuFe2O4 Composite for Photocatalytic Hydrogen Production

Shanmugam,

Agamendran,

Sekar

2024

Catalysts

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Using a p-n heterojunction is one of the efficient methods to increase charge transfer in photocatalysis applications. So, herein, p-type UiO-66 (NH2) and n-type CuFe2O4 (CFO) are used to form an effective p-n heterojunction. Due to their poor charge separation in their pristine form, both UiO-66 (NH2) and CFO materials cannot produce hydrogen; however, the composite p-n heterojunction formed between these materials makes fast charge separation and so hydrogen is efficiently produced. The optimized catalyst UCFO 25% produces a maximum of 62.5 µmol/g/h hydrogen in an aqueous methanol solution. The formation of a p-n heterojunction is confirmed by Mott–Schottky analysis and optical properties, crystallinity and the local atomic environment of the material was analyzed by various analytical tools like UV-Vis spectroscopy, XRD, and XANES.

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Elucidating influences of defects and thermal treatments on CO2 capture of a Zr-based metal–organic framework

Cited by 5 publications

References 62 publications

Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO₂ and I₂ Uptake

Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO₂ and I₂ Uptake

Stability of Zr-Based UiO-66 Metal–Organic Frameworks in Basic Solutions

Efficient Charge Transfer of p-n Heterojunction UiO-66-NH2/CuFe2O4 Composite for Photocatalytic Hydrogen Production

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Elucidating influences of defects and thermal treatments on CO2 capture of a Zr-based metal–organic framework

Cited by 5 publications

References 62 publications

Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO2 and I2 Uptake

Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO2 and I2 Uptake

Stability of Zr-Based UiO-66 Metal–Organic Frameworks in Basic Solutions

Efficient Charge Transfer of p-n Heterojunction UiO-66-NH2/CuFe2O4 Composite for Photocatalytic Hydrogen Production

Contact Info

Product

Resources

About

Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO₂ and I₂ Uptake

Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO₂ and I₂ Uptake