Porous carbon supported Lewis acid-base sites as metal-free catalysts for the carbonylation of glycerol with urea

A polyaniline-coated Ni–Co Prussian blue analogue nanocube-modified separator for high-performance lithium–sulfur batteries

“…4b, the N 1s spectra exhibited three peaks at 397.4, 398.0, and 399.8 eV, which were assigned to pyridine N, pyrrole N, and graphite N, respectively. 28 It has been reported that the presence of nitrogen, especially pyridine nitrogen, was favorable for the adsorption of lithium polysulfides. 29 The Co 2p spectra of NCP@PANi (Fig.…”

Tailored imidazolium tetraphenylborate salts for the design of boron, nitrogen co-doped carbon materials as high-performance anodes for fast-rate monovalent ion batteries

“…The concomitant presence of these two elements together with carbon therefore makes their respective levels of doping significantly higher. 26 Due to singular properties, B, N co-doped carbons have been successfully used as metal-free catalysts 27 and electrocatalysts, 26,28 electrode materials for metal-ion batteries 29,30 and electrochemical double-layer capacitors, 31,32 sorbents for hydrogen storage 33 and sensors for gas detection. 34…”

“…The concomitant presence of these two elements together with carbon therefore makes their respective levels of doping signicantly higher. 26 Due to singular properties, B, N co-doped carbons have been successfully used as metal-free catalysts 27 and electrocatalysts, 26,28 electrode materials for metal-ion batteries 29,30 and electrochemical double-layer capacitors, 31,32 sorbents for hydrogen storage 33 and sensors for gas detection. 34 Various methods have been used to synthesize B, N co-doped carbon materials such as chemical vapor deposition, 33,34 laser ablation 35 and conventional pyrolysis of organic precursors such as boric acid, phenylboronic acid and borax as boron precursors, and melamine, urea, imidazole and aniline as nitrogen precursors.…”

“…34 Various methods have been used to synthesize B, N co-doped carbon materials such as chemical vapor deposition, 33,34 laser ablation 35 and conventional pyrolysis of organic precursors such as boric acid, phenylboronic acid and borax as boron precursors, and melamine, urea, imidazole and aniline as nitrogen precursors. [26][27][28][29]32 The use of such volatile organic precursors presents however major drawbacks and usually leads to doped carbon-based materials with low heteroatom doping levels and/or low mass yields. In this context, the use of molten salts and ionic liquids (ILs) as heteroatom-containing precursors with negligible vapor pressure has proven to be of great interest for the synthesis of doped carbon-based materials.…”