Metal-organic frameworks (MOFs) such as zeolitic imidazolate frameworks (ZIFs) are porous materials with the potential for various applications, including energy production and drug delivery . ZIFs-based materials such as ZIF-8 (zinc-based ZIFs) were reported as an effective adsorbent for organic dyes and carbon dioxide (CO2) . They can be classified to 1) pure ZIF-8; 2) nanoparticles modified ZIF-8 such as ZnO@ZIF-8 ; and 3) ZIF8-derived ZnO loaded carbon (ZnO@N-doped C) . Despite ZIF-8 exhibiting high performance as an adsorbent, it shows low photocatalytic performance due to its large bandgap (~5.0 eV) . ZnO exhibited high photocatalysis compared to ZIF-8 . Also, MOF-derived ZnO-doped C exhibited high adsorption and photocatalytic performance on methylene blue (MB) degradation under sunlight irradiation, as the presence of carbon would enhance the light absorption, reduce the recombination of photo-generated electron-hole, and increase the MB around the photocatalytic active sites in ZnO . Doping of ZnO with nitrogen could enhance its catalytic activity by lowering the recombination rate of electron-hole pairs and enhancing the absorption of visible light . Hence, the ZnO@N-doped C might show good catalytic activities. Hence, the combination of N-doped C and ZnO would enhance the catalytic activity towards water contaminants . So, the synthesis of the hierarchical porous structure of ZnO@N-doped C may enhance the adsorption and photocatalytic degradation of organic dyes.