Fabrication of metal-organic frameworks@cellulose aerogels composite materials for removal of heavy metal ions in water

Lei, Chao; Gao, Junkuo; Ren, Wei; Xie, Yuanbo; Abdalkarim, Somia Yassin Hussain; Wang, Shunli; Ni, Qing‐Qing; Yao, Juming

doi:10.1016/j.carbpol.2018.10.029

Cited by 213 publications

(68 citation statements)

References 43 publications

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“…One of the attention-grabbing framework-based nanomaterials, metal-organic framework (MOF) materials with predesigned structure and active sites, has been widely applied in water purification (Jiang et al, 2019), carbon dioxide reduction (Meng et al, 2020;Yan et al, 2020), sensors (Li et al, 2016), etc. However, porous and function-customized characteristics make MOFs excellent candidates as adsorbents to remove heavy metal ions with superior performances (Chen et al, 2016;Lei et al, 2019;Zhang et al, 2020). To date, a series of MOFs such as UiO-66 (Luo et al, 2016), ZIF-8 (Jian et al, 2016), and MIL-101 (Luo et al, 2015b) have been reported for the adsorption of heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Liu

Shen

et al. 2021

Front. Chem. Eng.

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Two-dimensional (2D) metal–organic frameworks (MOFs) have emerged as intriguing 2D materials because of their specific features of 2D morphology and designable skeletons, which have elicited great interest in environment remediation. In this work, 2D MOF nanosheets are fabricated via a mixed-solvent solvothermal method, and a regulation strategy of metal inorganic clusters on MOFs is used to construct two different 2D MOFs with monometallic and bimetallic coordination, that is, Ni-MOF and Ni/Cd-MOF. Binary metal coordination renders more crystal defects and vacancies in the framework; thus, compared to monometallic Ni-MOF, bimetallic Ni/Cd-MOF exhibits fewer layers (4∼5 layers), higher specific surface area, larger pore size, and higher surface electronegativity, which leads to its excellent adsorption removal for Pb2+, with higher adsorption rate and affinity, and superior adsorption capacity (950.61 mg/g, almost twice as high as that of monometallic Ni-MOF). Besides, the adsorption mechanism further confirmed that the carboxyl groups (−COO−) from organic linker on 2D MOFs serve as the main binding sites for Pb2+ coordination, and bimetallic Ni/Cd-MOF has more active −COO− sites for Pb2+ capture. Thus, the bimetallic Ni/Cd-MOF regulated by heterogeneous metal atoms shows promising application for highly efficient adsorption of heavy metal ions.

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Section: Introductionmentioning

confidence: 99%

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Liu

Shen

et al. 2021

Front. Chem. Eng.

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“…In 2018, researchers loaded two MOF including UiO‐66 and UiO‐66‐NH 2 on the flexible cellulose aerogels (CA) to make a composite material with 81.30 and 89.40 mg g −1 equilibrium adsorption capacity for Pb II and 31.23 and 39.33 mg g −1 for Cu II by UiO‐66@CA and UiO‐66‐NH 2 @CA, respectively, during more than 5 cycles without obvious change in performance . The pseudo‐second‐order kinetic model defined resultant data.…”

Section: Adsorption Of More Than One Metal Ionmentioning

confidence: 99%

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

2020

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The efficient adsorption of heavy metal ions from wastewater has become a serious challenge from both environmental and biological viewpoints. Recently, porous metal‐organic frameworks (MOFs), with metallic clusters and organic linkers, have been developed as promising structures in the capture of different toxic and hazardous substances, including heavy metal ions, because of their unique features. Here there is a collection for recent progress in the field of water remediation from the variable‐valent metals in polluted water and the corresponding MOFs which are able to remove these pollutant agents from water. Meanwhile, effective factors in the absorption of metal ions are discussed. MOFs are considered to be a promising candidate for metal ions removal from wastewater.

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“…Due to its good stability, high sensitivity to detection, low cost, small volume, and portable belt, the gas-solid sensor offers an extensive field of application [10][11][12]. However, new materials such as ophtical fibers, semiconductors [3], metal-organic frameworks (MOFs) [13][14][15][16], and nanomaterials have been found, which can effectively detect harmful gases, but the detection sensitivity still can't meet the requirements, especially for the detection of corrosive gas molecules like the nitrogen oxides.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

Zhang

Tian

Zhang

et al. 2021

Preprint

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Density functional theory calculations have been made to investigated the adsorption and sensing properties of harmful nitrogen oxides (NO, NO2) on rhodium (Rh) doped hexagonal boron nitride (BN) to explore the feasibility of Rh-doped BN (Rh-BN) based gas sensor. For each gas molecule, various adsorption positions and orientations were examined. The favorable adsorption configuration has been established and the corresponding adsorption energy has been calculated. Besides, to understand the adsorption mechanism, The properties such as electron density, the energy band structure, state density of states, and charge transfer of the adsorption system were investigated in greater detail. The calculations indicate that the most stable structure is that the Rh atom located directly above the N atom, and a stable chemical bond with a length of 2.096 Å formed between the Rh atom and N atom, with a significant binding energy (𝐸𝑏) of -1.561 eV. Then, adsorption performance of Rh-BN monolayer upon nitrogen oxides is in order as NO2 > NO, with the adsorption energy (𝐸𝑎) of -3.919 eV and -3.318 eV, respectively. This indicates that the Rh-BN single layer possesses ideal adsorption and sensing properties. Furthermore, by doping the Rh atom, many levels of impurities are introduced into the intrinsic BN band structure, thereby improving the interaction between BN and adsorbed gas molecules. Following adsorption of NO and NO2, the band gap (Eg) of the doping system is wider. It has been demonstrated that gas adsorption reduces the electrical conductivity of the system, but increases the sensitivity of the system. The above calculation and analysis are of great importance for the exploration of the Rh-BN single layer as innovative gas detection material.

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Fabrication of metal-organic frameworks@cellulose aerogels composite materials for removal of heavy metal ions in water

Cited by 213 publications

References 43 publications

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Bimetallic Coordination in Two-Dimensional Metal–Organic Framework Nanosheets Enables Highly Efficient Removal of Heavy Metal Lead (II)

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

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