Clathrating CO₂ in a Supramolecular Granatohedron Cage with Noncovalent CO₂-NH₃ Interactions and High CO₂ Capture Efficiency under Ambient Conditions

Lu, Xiao1; Liu, Congyan1; Xiao, Xin2,3; Nguyen, Thien S.4; Xiang, Zhiling1; Chen, Chunhui1; Cui, Songlin1; Yavuz, Cafer. T.4; Xu, Qiang2,3,5; Liu, Bo1

2023-11-16

10.1021/acsami.3c11994

ACS APPLIED MATERIALS & INTERFACES   影响因子和分区

1944-8244

1944-8252

Organic amine (R-NH2) reagents as dominant chemical sorbents for CO2 capture in industrial processes suffer from high energy compensation for regeneration. Herein, we, for the first time, report the finding of Co(III) coordinating with NH3 molecules regulating the interaction between NH3 and CO2 to electrostatic interactions instead of a chemical reaction and achieve CO2 capture under near-ambient conditions. NH3 coordinating with Co(III) significantly reduces its alkalinity and reactivity with CO2 owing to its lone-pair electron donation during coordination. Under a simple protocol, CO2 induces the crystallization of CO2@[Co(NH3)(6)][HSO4][SO4] clathrate into a hydrogen-bonded granatohedron cage from a cobaltic hexammine sulfate aqueous solution under a CO2 pressure of 56 and 142 kPa at 275 and 298 K, respectively, with a CO2 uptake weight content of 11.7%. We reveal that CO2 interacts with cobaltous hexammine via supramolecular interactions rather than chemical bonding. The clathrate spontaneously separates from the solution as single crystals and readily releases CO2 under ambient conditions in water for cyclic utilization without further treatment. In such a rapid supramolecular capture process, molecular recognition ensures exclusive CO2 selectivity, and soluble clathrate enables the spontaneous CO2 release at a low energy penalty, exhibiting excellent practical potential in carbon capture.

cobaltic hexammine hydrogen-bonded cage supramolecularcarbon capture electrostatic interaction CO2 clathrate

SCI ; EI

英语

通讯

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001111124400001

AMER CHEMICAL SOC

20234915186331

Alkalinity ; Ammonia ; Carbon capture ; Cobalt compounds ; Electrostatics ; Hydrogen ; Hydrogen bonds ; pH ; Sulfur compounds ; Supramolecular chemistry ; Water treatment

Water Treatment Techniques:445.1 ; Environmental Engineering:454 ; Electricity: Basic Concepts and Phenomena:701.1 ; Chemistry, General:801.1 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2

Web of Science

1.Univ Sci & Technol China, Sch Chem & Mat Sci, Hefei 230026, Anhui, Peoples R China
2.Southern Univ Sci & Technol SUSTech, SUSTech Kyoto Univ Adv Energy Mat Joint Innovat La, Dept Chem, Shenzhen Key Lab Micro Nanoporous Funct Mat SKLPM, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.King Abdullah Univ Sci & Technol KAUST, Adv Membranes & Porous Mat AMPM Ctr, KAUST Catalysis Ctr KCC, Chem Program,Oxide & Organ Nanomat Energy & Enviro, Thuwal 23955, Saudi Arabia
5.Kyoto Univ, Inst Integrated Cell Mat Sci iCeMS, Kyoto 6068501, Japan

Lu, Xiao,Liu, Congyan,Xiao, Xin,et al. Clathrating CO₂ in a Supramolecular Granatohedron Cage with Noncovalent CO₂-NH₃ Interactions and High CO₂ Capture Efficiency under Ambient Conditions[J]. ACS APPLIED MATERIALS & INTERFACES,2023,15(47).

Lu, Xiao.,Liu, Congyan.,Xiao, Xin.,Nguyen, Thien S..,Xiang, Zhiling.,...&Liu, Bo.(2023).Clathrating CO₂ in a Supramolecular Granatohedron Cage with Noncovalent CO₂-NH₃ Interactions and High CO₂ Capture Efficiency under Ambient Conditions.ACS APPLIED MATERIALS & INTERFACES,15(47).

Lu, Xiao,et al."Clathrating CO₂ in a Supramolecular Granatohedron Cage with Noncovalent CO₂-NH₃ Interactions and High CO₂ Capture Efficiency under Ambient Conditions".ACS APPLIED MATERIALS & INTERFACES 15.47(2023).