Construction of nanosensor based on cobalt phosphate-doped biochar for derivative voltammetric analysis of hydroquinone in environmental samples.

A nanosensing platform was designed based on environmentally friendly cobalt phosphate-doped biochar (CoCPBC) derived from bamboo leaves for derivative voltammetric determination of hydroquinone  (HQ) in water and soil samples. Highly ambient-stable CoCPBC is prepared by hydrothermal synthesis containing cobalt nitrate, phosphoric acid (HPO), cetyltrimethylammonium ammonium bromide (CTAB), and bamboo leaves. Benefiting from the high effective area, the CoCPBC displays more active sites for HQ recognition and simultaneously improving the conductivity of biochar.