Decoration carbon nanotubes with Pd and Ru nanocrystals via an inorganic reaction route in supercritical carbon dioxide–methanol solution

Metal Ion Extraction with Bipyridine Derivatives as Chelating Ligands in Supercritical Carbon Dioxide

“…Unfortunately, direct extraction of metal ions by sc-CO2 is highly inefficient because of the charge neutralization requirement and the weak solute-solvent interactions. However, when metal ions are bound to organic ligands and form neutral species, their solubilities in sc-CO2 can be significantly increased [4][5][6][7][8]. To date, many chelating ligands have been used to extract metal ions in sc-CO 2 , e. g., crown ethers, b-diketones, dithiocarbamates, phosphates, and amines [9][10][11][12][13].…”

Noble metals supported on carbon nanotubes using supercritical fluids for the preparation of composite materials: A look at the interface

“…This can be carried out in solution but the yield of the reaction is low and an important amount of waste is generated [7,[30][31][32][33]. Alternative approaches with supercritical carbon dioxide and water have been used as green media for the synthesis of new materials and especially CNTs-metal composite materials [25,[34][35][36][37][38][39][40]. A supercritical fluid is a fluid at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist.…”

Multi-walled carbon nanotube/silver nanoparticles used for thermal transportation

“…Recently, a great deal of attention has been given to the decoration of carbon nanotubes (CNTs) with nanoparticles of metal [1][2][3][4][5][6][7][8][9][10][11], metal oxide [12][13][14][15][16][17][18], or metal sulfide [19][20][21] due to the composites' special catalysis [22,23], unique electrical, magnetic, thermal, and optical properties [24][25][26][27][28][29][30][31]. Among them, silver nanoparticles (Ag-NPs) attached onto CNTs (Ag/CNTs) gained significant attention owing to their potential applications as well as low cost.…”