The polyaminocarboxylated modified hydrochar for efficient capturing methylene blue and Cu(II) from water.

The polyaminocarboxylated modified hydrochar (ACHC) was synthesized to introduce abundant amino, hydroxyl and carboxylate multifunctional groups onto the surface of hydrochar by etherification, amination and carboxylated reaction. The ACHC was systematically characterized and used to evaluate adsorption properties of Cu(II) and methylene blue (MB) by batch sorption tests. The adsorption process toward Cu(II) and MB by ACHC obeyed the pseudo-second-order kinetic model and Langmuir model.

Two new ent-atisane diterpenoids from the whole plants of Euphorbia wallichii.

Two new ent-atisanediterpenoids, ent-atisane-16β, 17-isopropylidenedioxy-19-ol-3-one (1) and ent-atisane-16β, 17-isopropylidenedioxy-11β, 18-dihydroxyl-3-one (2) were isolated from the whole plants of Euphorbia wallichii. Their structures were elucidated on the basis of extensive spectroscopic analyses.