scholarly journals Biochar-Based Graphitic Carbon Nitride Adorned with Ionic Liquid Containing Acidic Polymer: A Versatile, Non-Metallic Catalyst for Acid Catalyzed Reaction

Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5958
Author(s):  
Samahe Sadjadi ◽  
Fatemeh Koohestani ◽  
Majid Heravi
Keyword(s):  
Ionic Liquid ◽  
Carbon Nitride ◽  
Knoevenagel Condensation ◽  
Biginelli Reaction ◽  
Aqueous Media ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Metallic Catalyst ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

A novel biochar-based graphitic carbon nitride was prepared through calcination of Zinnia grandiflora petals and urea. To provide acidic and ionic-liquid functionalities on the prepared carbon, the resultant biochar-based graphitic carbon nitride was vinyl functionalized and polymerized with 2-acrylamido-2-methyl-1-propanesulfonic acid, acrylic acid and the as-prepared 1-vinyl-3-butylimidazolium chloride. The final catalytic system that benefits from both acidic (–COOH and –SO3H) and ionic-liquid functionalities was applied as a versatile, metal-free catalyst for promoting some model acid catalyzed reactions such as Knoevenagel condensation and Biginelli reaction in aqueous media under a very mild reaction condition. The results confirmed high activity of the catalyst. Broad substrate scope and recyclability and stability of the catalyst were other merits of the developed protocols. Comparative experiments also indicated that both acidic and ionic-liquid functionalities on the catalyst participated in the catalysis.

Graphitic Carbon Nitride Nanosheet/FeWO4 Nanoparticle Composite for Tandem Photooxidation/Knoevenagel Condensation

2020 ◽  
Vol 3 (7) ◽  
pp. 7057-7065
Author(s):  
Afsaneh Rashidizadeh ◽  
Hamid Reza Esmaili Zand ◽  
Hossein Ghafuri ◽  
Zeynab Rezazadeh
Keyword(s):  
Carbon Nitride ◽  
Knoevenagel Condensation ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride

Ionic Liquid Templated Porous Boron-Doped Graphitic Carbon Nitride Nanosheet Electrode for High-Performance Supercapacitor

2017 ◽  
Vol 245 ◽  
pp. 249-258 ◽  
Author(s):  
Lirong Kong ◽  
Quanrun Chen ◽  
Xiaoping Shen ◽  
Chao Xia ◽  
Zhenyuan Ji ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Performance ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Boron Doped

Sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block polystyrene based membranes containing CuO@g-C3N4 embedded with 2,4,6-Triphenylpyrylium tetrafluoroborate for fuel cell applications

Soft Matter ◽  
2021 ◽  
Author(s):  
Berlina Maria Mahimai ◽  
Gandhimathi Sivasubramanian ◽  
Poonkuzhali Kulasekaran ◽  
Paradesi Deivanayagam
Keyword(s):  
Ionic Liquid ◽  
Fuel Cell ◽  
Copper Oxide ◽  
Polymer Composite ◽  
Carbon Nitride ◽  
Composite Membranes ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Sulfonated Polystyrene ◽  
Poly Ethylene

New series of polymer composite membranes were prepared from sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block polystyrene (S-PSEBS) and copper oxide loaded in graphitic carbon nitride (g-C3N4) embedded with an ionic liquid 2,4,6-triphenylpyrylium tetrafluoroborate (TPTB)....

Melamine-derived graphitic carbon nitride as a new effective metal-free catalyst for Knoevenagel condensation of benzaldehyde with ethylcyanoacetate

2018 ◽  
Vol 8 (11) ◽  
pp. 2928-2937 ◽  
Author(s):  
N. D. Shcherban ◽  
P. Mäki-Arvela ◽  
A. Aho ◽  
S. A. Sergiienko ◽  
P. S. Yaremov ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Knoevenagel Condensation ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Metal Free

Melamine-derived C3N4 was tested in Knoevenagel condensation of benzaldehyde with ethylcyanoacetate.

Conjugated polymer dots/graphitic carbon nitride nanosheet heterojunctions for metal-free hydrogen evolution photocatalysis

2019 ◽  
Vol 7 (1) ◽  
pp. 303-311 ◽  
Author(s):  
Wei Zhou ◽  
Tao Jia ◽  
Haixian Shi ◽  
Dingshan Yu ◽  
Wei Hong ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Conjugated Polymer ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Metal Free ◽  
Polymer Dots ◽  
Free Hydrogen ◽  
Metallic Catalyst

Pdot/g-C3N4 heterojunctions exhibit an HER of 929.3 μmol h−1 g−1 and AQE of 5.7% at 420 nm without a metallic catalyst.

Synthesis of mesoporous carbon nitride via a novel detemplation method and its superior performance in base-catalyzed reactions

2016 ◽  
Vol 6 (12) ◽  
pp. 4192-4200 ◽  
Author(s):  
Jie Xu ◽  
Yue Wang ◽  
Jie-Kun Shang ◽  
Quan Jiang ◽  
Yong-Xin Li
Keyword(s):  
Alkaline Solution ◽  
Mesoporous Carbon ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Base Catalysis ◽  
Graphitic Carbon Nitride ◽  
Superior Performance ◽  
Catalyzed Reactions ◽  
Mesoporous Carbon Nitride

Mesoporous graphitic carbon nitride was prepared using a new detemplation method using alkaline solution, and demonstrated superior base catalysis to g-CN detemplated using traditional HF solution.

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