Facile Cu(I) Loading for Adsorptive <scp>C3H6</scp>/<scp>C3H8</scp> Separation Through Double Cu(<scp>II</scp>) Salts Incorporation Within Pores With Unsaturated Fe(<scp>II</scp>) Sites

Han, Hyug Hee; Kim, Ah Reum; Kim, Tea Hoon; Bae, Yang‐Seop

doi:10.1002/bkcs.12225

Cited by 7 publications

(3 citation statements)

References 33 publications

(41 reference statements)

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“…For Cu(II) adsorption by biochar, the complexation and π electron coordination of surface functional groups may be involved [6, 70, 71]. In the Section 3.1, compared with SBC, SP-SBC had fewer surface functional groups.…”

Section: Resultsmentioning

confidence: 99%

Na₄P₂O₇-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution

Fan

Wang

Miao

et al. 2023

Adsorption Science & Technology

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With the rapid development of industrialization, the amount of copper-containing wastewater is increasing, thereby posing a threat to the aquatic ecological environment and human health. Sludge biochar has received extensive concern in recent years due to its advantages of low cost and sustainability for the treatment of heavy-metal-containing wastewater. However, the heavy-metal-adsorption capacity of sludge biochar is limited. This study prepared a sodium pyrophosphate- (Na4P2O7-) modified municipal sludge-based biochar (SP-SBC) and evaluated its adsorption performance for Cu(II). Results showed that SP-SBC had higher yield, ash content, pH, Na and P content, and surface roughness than original sewage sludge biochar (SBC). The Cu(II)-adsorption capacity of SP-SBC was 4.55 times than that of SBC at room temperature. For Cu(II) adsorption by SP-SBC, the kinetics and isotherms conformed to the pseudo-second-order model and the Langmuir–Freundlich model, respectively. The maximum adsorption capacity of SP-SBC was 38.49 mg·g−1 at 35°C. Cu(II) adsorption by SP-SBC primarily involved ion exchange, electrostatic attraction, and precipitation. The desired adsorption performance for Cu(II) in the fixed-bed column experiment indicated that SP-SBC can be reused and had good application potential to treat copper-containing wastewater. Overall, this study provided a desirable sorbent (SP-SBC) for Cu(II) removal, as well as a new simple chemical-modification method for SBC to enhance Cu(II)-adsorption capacity.

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Section: Resultsmentioning

confidence: 99%

Na₄P₂O₇-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution

Fan

Wang

Miao

et al. 2023

Adsorption Science & Technology

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“…28,29 The vast array of metal ions and organic linkers provides a plethora of structural possibilities with MOFs. 30 Historically, MOFs have been explored for applications such as gas storage and separation, [31][32][33][34][35][36] drug delivery, 37 catalysis, 38,39 magnet, 40,41 and sensing of small molecules, 42,43 all leveraging their high porosity, adjustable pore size, and multifunctionality. [44][45][46][47][48] Lately, the potential of MOFs in PEMFCs, particularly as solid electrolytes facilitating proton conduction, has gained traction.…”

Section: Introductionmentioning

confidence: 99%

Post‐synthetic modifications in metal–organic frameworks for high proton conductivity

Sharma,

Lee,

Lim

et al. 2023

Bulletin Korean Chem Soc

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A myriad of metal ions and organic linkers can be used to produce metal–organic frameworks (MOFs) with varied functionalities, porosities, and dimensionalities. Such diversity has garnered significant research interest, particularly in leveraging MOFs as proton conductors for fuel cells. One effective approach involves introducing guest molecules into MOF pores. These molecules serve either as proton carriers or as proton‐conducting media through potential hydrogen bonding networks. This review offers an organized overview of key methodologies historically employed to achieve superprotonic conductivity in MOFs. The article systematically categorizes these tactics into three primary groups: guest molecule encapsulation, modulation at metal‐coordination sites, and ligand functionalization. We succinctly discuss the roles of proton carriers, conducting media, and the overall MOF framework, emphasizing the significance of each strategy's application. In conclusion, we provide insights into the future development of MOFs as proton conductors, rooted in the categorization and conceptual understanding of these strategies.

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“…As a new kind of porous material, metal–organic frameworks (MOFs) are connected by metal nodes and organic connectors through coordination bonds and have a high specific surface area, high porosity, adjustable pore size, and controllable function. − Profited from the above characteristics, MOFs can produce differential interactions for different gas molecules by properly adjusting the pore environment, thereby achieving an advantageous separation. , As far as we know, MOFs are widely used in various kinds of mixed gas separation, such as C 2 H 2 /C 2 H 4 , C 2 H 6 /C 2 H 4 , C 3 H 6 /C 3 H 8 , CO 2 /CH 4 , C 2 H 2 /CO 2 , and CH 4 /N 2 . − However, there are only a few examples for separating C 3 H 6 /C 2 H 4 . , To realize the effective separation of C 3 H 6 /C 2 H 4 , the MOF materials must have a high storage capacity of C 3 H 6 and high selectivity of C 3 H 6 /C 2 H 4 simultaneously. According to previously reported studies, a narrow aperture will limit surface area and gas storage .…”

Section: Introductionmentioning

confidence: 99%

Water-Stable Microporous Bipyrazole-Based Framework for Efficient Separation of MTO Products

Zhen,

Liu,

Zhou

et al. 2023

ACS Appl. Mater. Interfaces

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Recently, methanol-to-olefins (MTO) technology has been widely used. The development of new adsorbents to separate MTO products and obtain highpurity ethylene (C 2 H 4 ) and propylene (C 3 H 6 ) has become an urgent task. Herein, an exceptionally highly water-stable metal−organic framework (MOF), [Cu 3 (OH) 2 (Me 2 BPZ) 2 ]•(solvent) x (1) (H 2 Me 2 BPZ = 3,3′-dimethyl-1H,1′H-4,4′bipyrazole) with hexagonal pores, has been elaborately designed and constructed. After being soaked in water for 7 days, it still maintains its structure, and the uptake of N 2 at 77 K is unchanged. The adsorption capacity of C 3 H 6 can reach 138 cm 3 g −1 , while the uptake of C 2 H 4 is only 52 cm 3 g −1 at 298 K and 1 bar. The dynamic breakthrough experiments show that the mixture of C 3 H 6 /C 2 H 4 (50/50, v/v) can be efficiently separated in one step. High-purity C 2 H 4 and C 3 H 6 can be obtained through an adsorption and desorption cycle and the yields of C 2 H 4 (purity ≥ 99.95%) and C 3 H 6 (purity ≥ 99%) are 84 and 48 L kg −1 , respectively. Surprisingly, when the flow rate is increased, the separation performance has no obvious change. Additionally, humidity has no effect on the separation performance. Finally, theoretical simulations indicate that there are stronger interactions between the C 3 H 6 molecule and the framework, which are beneficial to capturing C 3 H 6 over C 2 H 4 . KEYWORDS: metal−organic frameworks, methanol-to-olefins (MTO), water-stable, C 3 H 6 /C 2 H 4 separation, polymer-grade C 2 H 4

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Facile Cu(I) Loading for Adsorptive C₃H₆/C₃H₈ Separation Through Double Cu(II) Salts Incorporation Within Pores With Unsaturated Fe(II) Sites

Cited by 7 publications

References 33 publications

Na₄P₂O₇-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution

Na₄P₂O₇-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution

Post‐synthetic modifications in metal–organic frameworks for high proton conductivity

Water-Stable Microporous Bipyrazole-Based Framework for Efficient Separation of MTO Products

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Facile Cu(I) Loading for Adsorptive C3H6/C3H8 Separation Through Double Cu(II) Salts Incorporation Within Pores With Unsaturated Fe(II) Sites

Cited by 7 publications

References 33 publications

Na4P2O7-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution

Na4P2O7-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution

Post‐synthetic modifications in metal–organic frameworks for high proton conductivity

Water-Stable Microporous Bipyrazole-Based Framework for Efficient Separation of MTO Products

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Product

Resources

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Facile Cu(I) Loading for Adsorptive C₃H₆/C₃H₈ Separation Through Double Cu(II) Salts Incorporation Within Pores With Unsaturated Fe(II) Sites

Na₄P₂O₇-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution

Na₄P₂O₇-Modified Biochar Derived from Sewage Sludge: Effective Cu(II)-Adsorption Removal from Aqueous Solution