Zhang Gongguo, Ma Yanyun, Liu Feng, Tong Zhibo, Sha Jingquan, Zhao Wenjun, Liu Maochang, Zheng Yiqun
Department of Chemistry and Chemical Engineering, Jining University, Qufu, China.
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, China.
Front Chem. 2021 Apr 23;9:671220. doi: 10.3389/fchem.2021.671220. eCollection 2021.
We report a facile synthesis of Au@CuO core-shell mesoporous nanospheres with tunable size in the aqueous phase seeded growth. The success of the current work relies on the use of a halide-free copper (Cu) precursor and n-oleyl-1,3-propanediamine as a capping agent to facilitate the formation of a copperish oxide shell with a mesoporous structure and the presence of mixed oxidation states of Cu. By varying the amount of spherical Au seeds while keeping other parameters unchanged, their diameters could be readily tuned without noticeable change in morphology. As compared with commercial CuO, the as-prepared Au@CuO core-shell mesoporous nanospheres exhibit the higher adsorption ability, enhanced activity, and excellent stability toward photocatalytic degradation of methyl orange (MO) under visible light irradiation, indicating their potential applications in water treatment.
我们报道了一种在水相中通过种子生长法简便合成尺寸可调的Au@CuO核壳介孔纳米球的方法。当前工作的成功依赖于使用无卤化铜（Cu）前驱体和n-油基-1,3-丙二胺作为封端剂，以促进具有介孔结构且存在Cu混合氧化态的氧化铜壳层的形成。通过在保持其他参数不变的情况下改变球形Au种子的量，可以很容易地调节它们的直径，而形态没有明显变化。与市售CuO相比，所制备的Au@CuO核壳介孔纳米球在可见光照射下对甲基橙（MO）的光催化降解表现出更高的吸附能力、增强的活性和优异的稳定性，表明它们在水处理中的潜在应用。
