Sulfur-doped graphitic carbon nitride decorated with starch, Fe3O4, and Ag nanoparticles: As efficient and magnetic recoverable nanocatalyst for hydrogenation of nitroaromatics in aqueous media

Controllable and facile one-pot synthesis of high surface area amorphous, crystalline, and triphasic TiO2: catalytic and photocatalytic applications

“…Nitroaromatic compounds including nitrophenol and nitroaniline derivatives have been classied as priority toxic organic pollutants by the US Environmental Protection Agency (EPA). [24][25][26] These compounds commonly nd their way into the environment from the discharge of effluents from different chemical industries. Due to their high stability and solubility in wastewater as well as resistance to biodegradation, they can cause liver and kidney tissue damage, eye/skin irritation, cancer, and mutation in living organisms.…”

“…Due to their high stability and solubility in wastewater as well as resistance to biodegradation, they can cause liver and kidney tissue damage, eye/skin irritation, cancer, and mutation in living organisms. 24,25,27 Therefore, there is an imperative need to eliminate nitroaromatics from industrialized and agricultural effluents. One of the most efficient methods for removing these emerging pollutants is the catalytic reduction with sodium borohydride.…”

“…One of the most efficient methods for removing these emerging pollutants is the catalytic reduction with sodium borohydride. 24,25 In addition, the end products of the catalytic reduction (aromatic amines) are important precursors for producing pharmaceuticals, dyes, surfactants, agricultural products, and anti-corrosion compounds. 24,27 Aside from nitroaromatics, aromatic dyes such as methylene blue (MB) are another group of non-degradable, toxic, and organic pollutants that have found their way into the environment via industrial wastewater release.…”

Efficient and stable catalysts for the synthesis of dimethyl carbonate by carbonylation of methyl nitrite applying the starch-coated activated carbon as a support

“…23 The results of structural analysis showed that the introduction of starch can significantly increase the pore volume of the support, which is helpful for the catalytic reaction. A novel catalyst for catalytic hydrogenation of liquid-phase nitroaromatics was synthesized using starch modification, 24 and it exhibited good catalytic activity and stability due to the highly dispersed Ag nanoparticles and the strong interaction between the active metal and the support. The reduction yield of the catalyst in 4-nitroaniline aqueous solution was as high as 99%, and the activity decreased slightly after being recycled for 5 times.…”

“…25 The characterization results proved that starch could inhibit the decomposition of silanol groups on the surface of the support, and the silanol groups are conducive to the dispersion of Cu species. Previous studies have showed that the introduction of starch is likely to facilitate increasing the pore volume of the catalyst support, 23,26 strengthening the metal-support interactions 24 (MSI) and increasing the active sites. 27 In this work, starch was applied to modify the AC and new catalysts were synthesized (Scheme 1).…”