Cieľom tejto bakalárskej práce bola príprava kompozitu Cu@ZrO2 pomocou chemickej redukcie meďnatej soli za využitia redukčného činidla NaBH4 a N2H4 a štúdium optimálnych podmienok jeho prípravy. Najprv boli pripravené nanočastice oxidu zirkoničitého alkalickou hydrolýzou, ktoré boli v následnom kroku použité na prípravu kompozitu Cu@ZrO2. Pripravený kompozit bol charakterizovaný metódami: transmisnou elektrónovou mikroskopiou a röntgénovou štruktúrnou analýzou. Vysyntetizovaný kompozit bol skúmaný pre jeho katalytickú aktivitu na vzorovej reakcii, a to redukcii 4-nitrofenolu pomocou NaBH4.The aim of this bachelor thesis was the preparation of Cu@ZrO2 composite using chemical reduction of copper salt by NaBH4 and N2H4 as reducing agents and study of optimal reaction conditions for composite synthesis. In the first step, nanoparticles of zirconium dioxide were prepared by alkaline hydrolysis and in the second step they were used for the synthesis of Cu@ZrO2 composite. The prepared composite was characterized by methods of transmission electron microscopy and X-Ray diffraction analysis. Synthesized composite Cu@ZrO2 was studied for its catalytic effect in reduction of 4-nitrophenol by NaBH4.