摘要
本文采用柠檬酸钠还原法制备了Au纳米粒子,并将其组装到ZnO纳米棒阵列/玻璃片复合催化剂表面。利用透射电子显微镜(TEM)、元素mapping、光致发光光谱(PL)和紫外–可见漫反射光谱(DRS)研究了催化剂的结构及光学特征,同时考察了催化剂对葡萄糖的光催化转化性能。研究结果表明,Au纳米粒子均匀分布在ZnO纳米棒阵列表面,有效抑制催化剂光生载流子复合,同时减小催化剂的禁带宽度,拓宽光谱响应范围,提高光子利用率,使得催化剂对葡萄糖的光催化转化性能显著增强。
Au nanoparticles were prepared by sodium citrate reduction method and assembled on the surface of ZnO nanorod arrays/glass composite catalysts. The structural and optical characteristics of the catalysts were studied by transmission electron microscopy (TEM), the elemental mapping, photoluminescence (PL) and ultraviolet-visible diffuse reflectance spectra (DRS). Furthermore, the photocatalytic conversion of glucose was investigated. The research results showed that the Au nanoparticles, which were evenly distributed on the surface of ZnO nanorod arrays, could inhibit the recombination of photogenerated carriers, decrease the band gap and broaden the spectral response range, thus improving the photon utilization and photocatalytic performance of the catalysts for the conversion of glucose.
出处
《材料科学》
CAS
2022年第5期510-515,共6页
Material Sciences
