This study reports the synthesis of ZnO nanoparticles using the aqueous solution of broccoli extract. The nanoparticles, represented as broc-ZnO (with broccoli extract) and nb-ZnO (without broccoli extract), were obtained after calcination. The nanoparticles were characterized using X-ray diffraction (XRD), Transmission electron microscopy (TEM), Fourier Transform infra-red (FTIR), Energy dispersive spectroscopy (EDX), UV-visible spectroscopy (UV) and Photoluminescence (PL). Hexagonal phases were identified for both nanoparticles, while average crystallite sizes of 14 and 17 nm for broc-ZnO and nb-ZnO, respectively, were obtained. UV studies indicated the bandgap of the broc-ZnO and nb-ZnO as 4.09 and 3.87 eV, respectively. A plausible mechanism for the synthesis of the nanoparticles was suggested. The photocatalytic efficiency of broc-ZnO, obtained via the broccoli extract, was evaluated by studying its photo-enhanced catalytic activity against methylene blue (MB) and phenol red (PR), under UV light irradiation and 74% and 71% degradation efficiency of the successive dyes were achieved.

这项研究报告了使用花椰菜提取物的水溶液合成ZnO纳米颗粒。煅烧后获得了以broc-ZnO（含花椰菜提取物）和nb-ZnO（不含花椰菜提取物）表示的纳米颗粒。使用X射线衍射（XRD），透射电子显微镜（TEM），傅立叶变换红外（FTIR），能量色散光谱（EDX），紫外可见光谱（UV）和光致发光（PL）对纳米颗粒进行表征。两种纳米颗粒均已鉴定为六方相，而broc-ZnO和nb-ZnO的平均微晶尺寸分别为14和17 nm。紫外线研究表明，broc-ZnO和nb-ZnO的带隙分别为4.09和3.87 eV。提出了合成纳米颗粒的合理机制。broc-ZnO的光催化效率