Nickel hydroxide nanocrystals-modified glassy carbon electrodes for sensitive l-histidine detection.

Highlights: [•] Hourglass-like Ni(OH)2 was prepared via a simple and facile route in solution. [•] The sensor has a detection limit of 80nM. [•] The sensor shows much better catalytic performance compared with bulk material. [•] The sensor shows a great potential for practicable applications. [ABSTRACT FROM AUTHOR]