Carbon dioxide chemistry (in particular, capture and conversion) has attracted much attention from the scientific community due to global warming associated with positive carbon accumulation. The most widely used chemical absorption technique for storage/sequestration (CCS) would be essentially adopting amino-containing absorbents through formation of C–N bond in terms mechanistic consideration. However, extensive energy input desorption compression process a crucial barrier realize...

Ionic liquids (ILs), a kind of novel green medium composed entirely cations and anions, have attracted considerable attention due to their unique properties such as non-volatility, tunable polarity, high stability so on. In this article, the latest progress on absorption subsequent conversion CO2 by using ILs absorbents, catalysts or promoters will be summarized. The chemical performance ILs, especially task-specific ionic (TSILs) amino-functionalized superbase-derived protic has been...

High-entropy perovskite fluorides (HEPFs) have great potential in electrocatalysis that has not been realized because of the limitation a high-temperature synthetic route and limited understanding high-entropy materials. The use HEPFs effective oxygen evolution catalysis feasible synthesis for boiled solution by combining hydrothermal method with mechanochemistry are first reported here. These consisting cost-effective elements dramatically gave excellent catalytic activity reaction an...

Abstract A series of easily prepared Lewis basic ionic liquids were developed for cyclic carbonate synthesis from epoxide and carbon dioxide at low pressure without utilization any organic solvents or additives. Notably, quantitative yields together with excellent selectivity attained when 1,8‐diazabicyclo[5.4.0]undec‐7‐enium chloride ([HDBU]Cl) was used as a catalyst. Furthermore, the catalyst could be recycled over five times appreciable loss catalytic activity. The effects structure...

Abstract The chemical fixation of CO 2 under mild reaction conditions is significance from a sustainable chemistry viewpoint. Herein ‐reactive protic ionic liquid (PIL), [HDBU + ][TFE − ], was designed by neutralization the superbase 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) with weak proton donor trifluoroethanol (TFE). As bifunctional catalyst for simultaneously activating and substrate, this PIL displayed excellent performance in catalyzing reactions 2‐aminobenzonitriles at atmospheric...

Abstract The synthesis of hierarchically mesoporous polymers with multiple functionalities is challenging. Herein we reported a template‐free strategy for phenolic azo‐polymers hierarchical porous structures based on diazo‐coupling reaction in aqueous solution under mild conditions. resultant have surface areas up to 593 m 2 g −1 the mesopore ratio >80 %, and good ability complex metal ions, such as Cu 2+ , Zn ,Ni achieving loading 26.24 wt %. Moreover, complexed showed excellent...

Steric bulk controls CO2 absorption: N-substituted amino acid salts in poly(ethylene glycol) reversibly absorb nearly 1:1 stoichiometry. Carbamic is thought to be the absorbed form of CO2; this was supported by NMR and situ IR spectroscopy, DFT calculations. The captured could converted directly into oxazolidinones thus desorption sidestepped.

Graphene reinforced waterborne polyurethane composite coatings were fabricated on steel surfaces. Superior anticorrosion properties achieved by the addition of 0.4 wt% self-aligned graphene.

Visible-light-driven photoreduction of CO2 to energy-rich chemicals in the presence H2 O without any sacrifice reagent is significance, but challenging. Herein, Eosin Y-functionalized porous polymers (PEosinY-N, N=1-3), with high surface areas up 610 m2 g-1 , are reported. They exhibit activity for photocatalytic reduction CO gaseous O, photosensitizer or reagent, and under visible-light irradiation. Especially, PEosinY-1 derived from coupling Y 1,4-diethynylbenzene shows best performance...

The CO2-involved synthesis of chemicals is significance. In this work, we found that 1-alkyl-3-methylimidazolium ionic liquids (ILs) had high efficiency for catalyzing the formylation amines using CO2 and phenylsilane at room temperature, producing corresponding formylated products in excellent yields under metal-free condition. ILs acted as bifunctional catalysts, which activated Si–H bond to react with form formoxysilane intermediate simultaneously amine substrate through hydrogen bond....

Fabrication of crystalline covalent triazine frameworks (CTFs) under mild conditions without introduction carbonization is a long-term challenging subject. Herein, tandem transformation strategy was demonstrated for the preparation highly CTFs with high surface areas and metal- solvent-free conditions. CTF-1 staggered AB stacking order (orange powder) obtained in presence catalytic amount superacid at 250 °C transformed to an eclipsed AA (greenish area 646 m2 g-1 through annealing 350...

High-entropy materials refer to a kind of in which five or more metal species were incorporated deliberately into single lattice with random occupancy. Up now, such concept has been only restricted hard materials, as high-entropy alloys and ceramics. Herein we report the synthesis hybrid polymetallic zeolitic imidazolate framework (also named framework, HE-ZIF), via entropy-driven room-temperature mechanochemistry. HE-ZIF contains metals including ZnII , CoII CdII NiII CuII are dispersed ZIF...

Strong metal–support interaction (SMSI) construction is a pivotal strategy to afford thermally robust nanocatalysts in industrial catalysis, but induced reactions (>300 °C) specific gaseous atmospheres are generally required traditional procedures. In this work, photochemistry-driven methodology was demonstrated for SMSI under ambient conditions. Encapsulation of Pd nanoparticles with TiOx overlayer, the presence Ti3+ species, and suppression CO adsorption were achieved upon UV irradiation....

Oxidative desulfurization (ODS) plays critical roles in the production of high-quality sulfur impurity-free fuels, especially procedures using molecular oxygen as sole oxidant. However, state-of-the-art systems still rely on noble metal nanocatalysts, with deactivation issues caused by coking and sintering present. Herein, leveraging merits single-atom catalysts (SACs) earth-abundant cores robust nanoporous supports, a series composed homogeneously distributed single chromium atoms anchored...

Zeolite-confined metal nanoparticles (NPs) have attracted much attention owing to their superior sintering resistance and broad applications for thermal environmental catalytic reactions. However, the pore size of conventional zeolites is usually below 2 nm, reactants are easily blocked access active sites. Herein, a facile in situ mesoporogen-free strategy developed design synthesize palladium (Pd) NPs enveloped single-crystalline zeolite (silicalite-1, S-1) with intra-mesopores (termed...

Porous carbons are the active materials of choice for supercapacitor applications because their power capability, long-term cycle stability, and wide operating temperatures. However, development carbon with improved physicochemical electrochemical properties is generally carried out via time-consuming cost-ineffective experimental processes. In this regard, machine-learning technology provides a data-driven approach to examine previously reported research works find critical features...

Abstract The development of alternative catalytic systems toward high‐performance CO 2 photoreduction is considered to be a promising approach address the future energy demand and reduce emissions. However, molecules are thermodynamically stable in nature, thus adsorption activation on surface catalysts key factors determine conversion efficiency. Herein, porous liquid (NH ‐UIO‐66 PL) demonstrated for efficiently facilitating by modification metal–organic framework ‐UIO‐66) with ionic via...

A highly efficient binary system consisting of polyethylene glycol and an amidine or guanidine superbase was developed for CO2 absorption, leading to the activation molecules, thus direct conversion captured value-added chemicals fuels successfully performed avoid desorption.

A series of polyethylene glycol (PEG)-functionalized basic ionic liquids (ILs) were developed for efficient CO2 conversion into organic carbonates under mild conditions. In particular, BrTBDPEG150TBDBr was proven to be a highly and recyclable catalyst the synthesis cyclic without utilization any solvents or additives. This is presumably due activation epoxide assisted by hydrogen bonding ether linkage in PEG backbone through formation carbamate species with secondary amino group IL cation on...

The tunability of the band gaps in Zn-based metal-organic frameworks (MOFs) has been experimentally demonstrated via two different approaches: changing cluster size secondary building unit (SBU) or alternating conjugation organic linker.

Mesoporous poly(triphenylphosphine) with azo functionality (poly(PPh3)-azo) is reported, which was synthesized via oxidative polymerization of P(m-NH2Ph)3 at ambient conditions. This kind polymer could strongly coordinate metal ions (e.g., Ru3+) and reduce Ag+ in situ to metallic form. The resultant metalated poly(PPh3)-azo poly(PPh3)-azo-Ag or -Ru) were discovered be highly efficient catalysts for CO2 transformation. Poly(PPh3)-azo-Ag showed more than 400 times higher site-time-yield (STY)...

A series of easily prepared Lewis basic ionic liquids were developed as recyclable and efficient catalysts for selective synthesis 5-aryl-2-oxazolidinones from aziridines CO2 without utilization any organic solvent or additive. Notably, high conversion, chemo- regio-selectivity attained when 1-butyl-4-aza-1-azaniabicyclo[2.2.2]octane bromide ([C4DABCO]Br) was used the catalyst. Furthermore, catalyst could be recycled over four times appreciable loss catalytic activity. The effects structure...

Mesoporous nitrogen-doped carbons with high nitrogen content and ultrahigh surface areas were prepared, which showed efficiency for oxidation of alkanes in aqueous phase.