A solvent-free porous liquid comprising hollow nanorod–polymer surfactant conjugates

Kumar, Raj; Dhasaiyan, Prabhu; Naveenkumar, Parinamipura M.; Sharma, Kamendra P.

doi:10.1039/c9na00353c

Cited by 25 publications

(18 citation statements)

References 35 publications

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“…However, this confirmed the presence of accessible permanent pores PoLi and was in accordance with previously shown studies. 23 The PoLi-bCA sample showed similar CO 2 uptake capacity (≈ 5 ccg -1 ) at 0.03 P/P o , suggesting that inclusion of bCA did not lead to blockage of tortuous pores in the amorphous silica walls rods and that the hollow core was still accessible for CO 2 adsorption (Figure 1d); bCA showed adsorption (≈ 1 ccg -1 ) by itself. Furthermore, circular dichroism based secondary structural analysis of the enzyme in PoLi-bCA showed a random coil confirmation exhibited by a negative peak at 198 nm (SI, Figure S5).…”

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confidence: 89%

“…[17][18][19][20][21][22] Mesoporous liquids (pore size > 2 nm) comprising hollow silica particles or carbon surface engineered with polymers have been recently shown to trap gaseous adsorbents. [23][24][25][26] However, all the above examples demonstrate porous liquids that can sequester different types of gases, but, very few of them have been utilized for the deployment of a chemical reaction for converting the adsorbed gases to utility chemicals. The major challenge is finding a reaction suitable sterically hindered solvent, and also ensuring that the catalytic component as well as the product does not occlude the pores.…”

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confidence: 99%

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Novel Multifunctional Porous Liquid Composite for Recyclable Sequestration, Storage and In-situ Catalytic Conversion of Carbon Dioxide

Bhattacharjee¹,

Kumar²,

SHARMA³

2020

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<div><b>Novel Multifunctional Porous Liquid Composite for Recyclable Sequestration, Storage and In-situ Catalytic Conversion of Carbon Dioxide</b> <br></div><div><br></div><div>Archita Bhattacharjee, Raj Kumar and Prof. K. P. Sharma* Department of Chemistry, IIT Bombay, Powai, India <br></div><div>* E-mail: k.sharma@chem.iitb.ac.in <br></div><div><br></div><div>Keywords: Porous liquid composite, mesoporous liquid, hollow silica nanorods, CO<sub>2</sub> capture, CO<sub>2</sub> catalytic conversion<br></div><div><br></div><div>Abstract: Permanent pores combined with fluidity renders flow processability to porous liquids otherwise not seen in porous solids. Although, sequestration of different gases has recently been shown in porous liquids, there is still adearth of studies for deploying in-situ chemical reactionsto convert adsorbed gases into utility chemicals in this phase. Here, a facile method for the design and development of a new class of solvent-less porous liquid composite which, as shown for the first time, can catalyze the conversion of adsorbed gaseous molecules into industrially relevant product, is shown. The recyclable porous liquid composite comprising polymer-surfactant modified hollow silica nanorods and carbonic anhydrase enzyme not onlysequesters (5.5 ccg<sup>-1</sup> at 273 K and 1 atm) and stores CO<sub>2</sub>,but is also capable of driving an in-situ enzymatic reaction for hydration of CO<sub>2</sub> to HCO<sub>3</sub><sup>-</sup> ion, subsequently converting it CaCO<sub>3</sub> due to reaction with pre-dissolved Ca<sup>2+</sup>. Light and electron microscopy combined with x-ray diffraction reveals the nucleation and growth of calcite and aragonite crystals. Moreover, the liquid-like property of the porous composite material can be harnessed by executing the same reaction via diffusion ofcomplimentary Ca<sup>2+</sup> and HCO<sub>3</sub><sup>-</sup> ions through different compartments separated by an interfacial channel.<br></div><div></div>

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confidence: 99%

Novel Multifunctional Porous Liquid Composite for Recyclable Sequestration, Storage and In-situ Catalytic Conversion of Carbon Dioxide

Bhattacharjee¹,

Kumar²,

SHARMA³

2020

Preprint

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“…Other liquids such as silicone oils, triglyceride oils, polyethylene glycol have also been utilized as solvents for the fabrication of microporous MOF based porous liquid [55] . Recently, mesoporous liquids (pore size=2–50 nm) comprising hollow silica particles or carbon surface engineered with polymers or ionic liquids have been shown to trap gaseous adsorbents [56–60] …”

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confidence: 99%

Composite Porous Liquid for Recyclable Sequestration, Storage and In Situ Catalytic Conversion of Carbon Dioxide at Room Temperature

2021

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Permanent pores combined with fluidity renders flow processability to porous liquids otherwise not seen in porous solids. Although porous liquids have been utilized for sequestration of different gases and their separation, there is still a dearth of studies for deploying in situ chemical reactions to convert adsorbed gases into utility chemicals. Here, we show the design and development of a new type of solvent‐less and hybrid (meso‐)porous liquid composite, which, as demonstrated for the first time, can be used for in situ carbon mineralization of adsorbed CO2. The recyclable porous liquid composite comprising polymer‐surfactant modified hollow silica nanorods and carbonic anhydrase enzyme not only sequesters (5.5 cm3 g−1 at 273 K and 1 atm) and stores CO2 but is also capable of driving an in situ enzymatic reaction for hydration of CO2 to HCO3− ion, subsequently converting it to CaCO3 due to reaction with pre‐dissolved Ca2+. Light and electron microscopy combined with X‐ray diffraction reveals the nucleation and growth of calcite and aragonite crystals. Moreover, the liquid‐like property of the porous composite material can be harnessed by executing the same reaction via diffusion of complimentary Ca2+ and HCO3− ions through different compartments separated by an interfacial channel. These studies provide a proof of concept of deploying chemical reactions within porous liquids for developing utility chemical from adsorbed molecules.

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“…Their modular nature and structure diversity facilitate the exquisite control over porous liquids with respect to the pore size and chemistry through the judicious selection of structural constituent. Such versatile porosities thereby enable systematic studies that afford an understanding of structure-function relationships of porous liquids, which has led them to be of particular interest for potential utility in gas storage [8][9][10][11][12][13][14][15][16] , separations [17][18][19][20] and catalysis [21][22][23] .…”

Section: Introductionmentioning

confidence: 99%

Type II porous ionic liquid based on metal-organic cage that enables L-tryptophan identification

Zhang

Yang

Zhang

et al. 2021

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Porous liquids with chemical separation properties are quite well-studied in general, but there is only a handful of reports in the context of identification and separation of non-gaseous molecules. Herein, we report the first example of Type-II porous ionic liquid that exhibits exceptional selectivity towards L-tryptophan (L-Trp) over other aromatic amino acids and the first in which coordination cages promote this selectivity. A previously known class of anionic organic-inorganic hybrid doughnut-like cage (HD) has been readily dissolved in trihexyltetradecylphosphonium chloride (THTP_Cl). The resulting liquid, HD/THTP_Cl, is thereby composed of common components, facile to prepare, and exhibit room temperature fluidity. The permanent porosity are manifested by the high-pressure isotherm for CH4 and modeling studies. With evidence from time-dependent amino acid uptake, competitive extraction studies and molecular dynamic simulations, HD/THTP_Cl exhibit better selectivity towards L-Trp than existing solid state sorbents, and we attribute it to not only the intrinsic porosity of HD but also the host-guest interactions between HD and L-Trp. Specifically, each HD unit is binded with nearly 5 L-Trp molecules, which is higher than the L-Trp occupation in the structure unit of other benchmark metal-organic frameworks.

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A solvent-free porous liquid comprising hollow nanorod–polymer surfactant conjugates

Abstract: A solvent-free porous liquid comprising polymer-surfactant modified hollow silica nanorods shows significant CO2 adsorption at 0 °C.

Cited by 25 publications

References 35 publications

Novel Multifunctional Porous Liquid Composite for Recyclable Sequestration, Storage and In-situ Catalytic Conversion of Carbon Dioxide

Novel Multifunctional Porous Liquid Composite for Recyclable Sequestration, Storage and In-situ Catalytic Conversion of Carbon Dioxide

Composite Porous Liquid for Recyclable Sequestration, Storage and In Situ Catalytic Conversion of Carbon Dioxide at Room Temperature

Type II porous ionic liquid based on metal-organic cage that enables L-tryptophan identification

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