In this work, as an alternative to pyrochar, catalytic hydrothermal carbonization has been employed to synthesize hydrochar to eliminate emerging contaminants in multicomponent systems. The hydrochar has been synthesized using a single step catalytic hydrothermal carbonization at low temperature (200 °C) without any secondary activation with high specific surface area and very good adsorption efficiency for the removal of emerging contaminants. The synthesized hydrochar (HC200) was characterized using various analytical techniques and found to have porous structure with 114.84 m.g of specific surface area and also contained various oxygen-containing functionalities. The maximum adsorption efficiencies of 92.4 %, 85.4 %, and 82 % were obtained for ibuprofen, sulfamethoxazole, and bisphenol A, respectively. Humic acid, a naturally occurring organic compound had a negligible effect on the adsorption of the selected contaminants. The hydrochar's selectivity towards the emerging contaminants in binary and ternary multicomponent systems was in the order of ibuprofen > sulfamethoxazole > bisphenol A.
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http://dx.doi.org/10.1016/j.biortech.2023.130018 | DOI Listing |
Langmuir
January 2025
CSSC Nanjing Lvzhou Environmental Protection Co., Ltd, Nanjing 210039, China.
In this study, the MnFeO@CoS magnetic nanocomposite was prepared by a two-step hydrothermal method and used to catalyze the ozone oxidation degradation of methylene blue. It was characterized by XRD, EDS, SEM, FT-IR, and XPS. The results showed that the introduction of CoS made MnFeO grow uniformly on CoS nanosheets, which effectively prevented the agglomeration of MnFeO.
View Article and Find Full Text PDFLangmuir
January 2025
College of Textile Science and Engineering, Jiangnan University, 1800 Lihu Road, 214122 Wuxi, P. R. China.
In the realm of zinc-air batteries, high bifunctional catalytic efficacy is intimately tied to the evaluation of catalysts. Consequently, the pursuit of proficient bifunctional catalysts that can efficiently catalyze both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) remains a paramount objective in this research area. In this study, the spiny cobalt tetroxide (CoO) encapsulated hollow carbon spheres (HCSs) are constructed by anchoring CoO onto HCS via hydrothermal or annealing treatment.
View Article and Find Full Text PDFInorg Chem
January 2025
CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS 5026, F-33600 Pessac ,France.
The diaspore-type crystalline structure is historically well-known in mineralogy, but it has also been widely studied for various applications in the field of catalysis, electrocatalysis, and batteries. However, once two anions of similar ionic size but different electronegativity, such as F and O or more precisely OH, are combined, the knowledge of the location of these two anions is of paramount importance to understand the chemical properties in relation with the generation of hydrogen bonds. Coprecipitation and hydrothermal routes were used to prepare hydroxide-fluorides that crystallize all in an orthorhombic structure with four formula units per cell.
View Article and Find Full Text PDFDalton Trans
January 2025
School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150080, China.
In this work, we successfully prepared four POM-based organic-inorganic hybrids, namely, [(CHN)(CHN)][PMoO] (1), [(CHN)(CHN)][PMoO] (2), [(CHN)][PMoO]·4HO (3), and [(CHN)][PMoO] (4) (where CHN = pyridine, CHN = pyrazine, CHN = 2,7-diamino-1,3,4,6,8,9-hexaazaspiro[4.4] nonane, and CHN = 3-amino-1,2,4-triazole), using a hydrothermal method. Compounds 1 and 2 exhibited a lamellar three-dimensional structure.
View Article and Find Full Text PDFHydrothermal carbonization (HTC) of carbohydrates has been reported as a sustainable and green technique to produce carbonaceous micro- and nano-materials. These materials have been developed for several applications, including catalysis, separation science, metal ion adsorption and nanomedicine. Carbon nanoparticles (CNPs) obtained through HTC are particularly interesting for the latter application since they exhibit photothermal properties when irradiated with near-infrared (NIR) light, act as an antioxidant by scavenging reactive oxygen species (ROS), and present good colloidal stability and biocompatibility.
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