Efficient removal of cesium ions using Prussian blue loaded on magnetic porous biochar synthesized by one-step calcination.

Prussian blue (PB) is widely used for the selective removal of radioactive cesium ions (Cs) from aqueous solutions. Due to its small size and easy dispersion in water, PB requires a carrier that is both inexpensive and easily separable. Magnetic porous biochar (MPBC) was formed by activating starch with FeCl through a one-step calcination method.

Enhanced adsorption capacity of tetracycline on porous graphitic biochar with an ultra-large surface area.

Excessive tetracycline in the water environment may lead to the harming of human and ecosystem health. Removing tetracycline antibiotics from aqueous solution is currently a most urgent issue. Porous graphitic biochar with an ultra-large surface area was successfully prepared by a one-step method.