Konjac glucomannan/cellulose nanofibers composite aerogel supported HKUST-1 for CO2 adsorption

Sun, Jinqiang; Shang, Mengge; Zhang, Minna; Yu, Shimo; Yuan, Zhe; Yi, Xibin; Филатов, С. А.; Zhang, Jing

doi:10.1016/j.carbpol.2022.119720

Cited by 53 publications

(11 citation statements)

References 35 publications

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“…In addition, as can be seen from Figure , the CH 4 adsorption capacity of AZSCA is 181 cm 3 ·g –1 , which is significantly higher than that of our ZIF-8-C (155 cm 3 ·g –1 ), which has better storage properties, on the one hand, due to the loading of ZIF-8 on SA, the reduction of specific surface area and the possibility of pore blockage caused by conventional ZIF-8 synthesis technology are eliminated, and the exposed adsorption sites increase. On the other hand, the existence of the hierarchical pore structure does enhance the interaction between methane and the adsorbent. , Therefore the composite of SA and ZIF-8 can synergistically make the composite material have stronger methane adsorption capacity, enhancing the affinity between CH 4 and sorbents.…”

Section: Results and Discussionmentioning

confidence: 99%

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Sodium Alginate-Based Carbon Aerogel-Supported ZIF-8-Derived Porous Carbon as an Effective Adsorbent for Methane Gas

Shang

Peng

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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Adsorption natural gas (ANG) is a technology in which natural gas is stored on the surface of porous materials at relatively low pressures, which are promising candidates for adsorption of natural gas. Adsorbent materials with a large surface area and porous structure plays a significant role in the ANG technology, which holds promise in increasing the storage density for natural gas while decreasing the operating pressure. Here, we demonstrate a facile synthetic method for rational construction of a sodium alginate (SA)/ZIF-8 composite carbon aerogel (AZSCA) by incorporating ZIF-8 particles into SA aerogel through a directional freeze-drying method followed by the carbonization process. The structure characterization shows that AZSCA has a hierarchical porous structure, in which the micropores originated from MOF while the mesopores are derived from the three-dimensional network of the aerogel. The experimental results show that AZSCA achieved high methane adsorption of 181 cm 3 •g −1 at 65 bar and 298 K, along with higher isosteric heat of adsorption (Q st ) throughout the adsorption range. Thus, the combination of MOF powders with aerogel can find potential applications in other gas adsorption.

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Section: Results and Discussionmentioning

confidence: 99%

“…On the other hand, the existence of the hierarchical pore structure does enhance the interaction between methane and the adsorbent. 39,40 Therefore the composite of SA and ZIF-8 can synergistically make the composite material have stronger methane adsorption capacity, enhancing the affinity between CH 4 and sorbents.…”

Section: Ch 4 Adsorptionmentioning

confidence: 99%

Sodium Alginate-Based Carbon Aerogel-Supported ZIF-8-Derived Porous Carbon as an Effective Adsorbent for Methane Gas

Shang

Peng

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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“…During CO 2 adsorption by MSA-X, SA provides an open meso/macropore structure that facilitates rapid diffusion and contact between CO 2 and the active centers, whereas Mg-MOF-74 provides micropores/ mesopores in which CO 2 is quickly transferred to the adsorbent via the mesopores, promoting the strong interaction between CO 2 and the adsorption centers in the micropores. 47 The combination of the SA mesopores/macropores and Mg-MOF-74 micropores resulted in an unexpected synergistic effect. At 298 K and 1 bar, MSA-6 had a CO 2 adsorption capability of up to 2.461 mmol•g −1 .…”

Section: Resultsmentioning

confidence: 99%

Hierarchically Porous Mg-MOF-74/Sodium Alginate Composite Aerogel for CO₂ Capture

Peng,

Zhang,

Sun

et al. 2023

ACS Appl. Nano Mater.

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One of the most promising methods for capturing carbon dioxide (CO2) is solid physical adsorption, which is an efficient and simple technique. The key to effective CO2 capture is the development of high-performance solid adsorbents with excellent CO2 adsorption capacity, CO2/N2 selectivity, and rapid adsorption/desorption kinetics. In this paper, a Mg-MOF-74/sodium alginate composite aerogel was prepared by loading Mg-MOF-74 on sodium alginate sheets followed by directional freeze-drying. The composite aerogel exhibited a hierarchical porous structure, in which sodium alginate provided an open mesoporous/macroporous structure that promoted diffusion and contact with the active center of CO2. The Mg-MOF-74 micropores/mesopores promoted the strong interaction between CO2 and the adsorbent in the micropore and rapid mass transfer of CO2 to the adsorbent through the mesopores. The experimental data showed that MSA-6 achieved CO2 adsorption of 2.461 mmol·g–1 at 298 K. Furthermore, the CO2/N2 adsorption selectivity of MSA-6 reached 35.108, indicating its strong CO2 selective adsorption potential.

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“…The large specific surface area of the 3D structure exposes the possible active sites, which enhances the contact between guest molecules (CO 2 , O 2 , H 2 O) and the active sites, thus improving the catalysis rate of the reaction. The hierarchically porous structure ensures ultrafast mass transfer between the catalyst and guest molecules [ 35 ]. The macroporous structures are conducive to the diffusion of gas and electrolytes on a micro-scale; meanwhile, the micropores help improve the transportation rate of the gas molecules to the active sites on a nano-scale.…”

Section: Applications Of Cas In Electrocatalysismentioning

confidence: 99%

Carbon Aerogels as Electrocatalysts for Sustainable Energy Applications: Recent Developments and Prospects

Zhang

Xuan

et al. 2022

Nanomaterials

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Carbon aerogel (CA) based materials have multiple advantages, including high porosity, tunable molecular structures, and environmental compatibility. Increasing interest, which has focused on CAs as electrocatalysts for sustainable applications including oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and CO2 reduction reaction (CO2RR) has recently been raised. However, a systematic review covering the most recent progress to boost CA-based electrocatalysts for ORR/OER/HER/CO2RR is now absent. To eliminate the gap, this critical review provides a timely and comprehensive summarization of the applications, synthesis methods, and principles. Furthermore, prospects for emerging synthesis, screening, and construction methods are outlined.

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Konjac glucomannan/cellulose nanofibers composite aerogel supported HKUST-1 for CO2 adsorption

Cited by 53 publications

References 35 publications

Sodium Alginate-Based Carbon Aerogel-Supported ZIF-8-Derived Porous Carbon as an Effective Adsorbent for Methane Gas

Sodium Alginate-Based Carbon Aerogel-Supported ZIF-8-Derived Porous Carbon as an Effective Adsorbent for Methane Gas

Hierarchically Porous Mg-MOF-74/Sodium Alginate Composite Aerogel for CO₂ Capture

Carbon Aerogels as Electrocatalysts for Sustainable Energy Applications: Recent Developments and Prospects

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Konjac glucomannan/cellulose nanofibers composite aerogel supported HKUST-1 for CO2 adsorption

Cited by 53 publications

References 35 publications

Sodium Alginate-Based Carbon Aerogel-Supported ZIF-8-Derived Porous Carbon as an Effective Adsorbent for Methane Gas

Sodium Alginate-Based Carbon Aerogel-Supported ZIF-8-Derived Porous Carbon as an Effective Adsorbent for Methane Gas

Hierarchically Porous Mg-MOF-74/Sodium Alginate Composite Aerogel for CO2 Capture

Carbon Aerogels as Electrocatalysts for Sustainable Energy Applications: Recent Developments and Prospects

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Hierarchically Porous Mg-MOF-74/Sodium Alginate Composite Aerogel for CO₂ Capture