申请人:University of Oregon
公开号:US20150259217A1
公开(公告)日:2015-09-17
Methods for making metal oxide nanoparticles, including mixed metal oxides and core-shell metal oxide nanoparticles, are disclosed. A solution comprising a metal carboxylate and a carboxylic acid is combined with a solvent comprising an alcohol heated to a temperature ≦250° C. for an effective period of time to form metal oxide nanoparticles. The metal may be a group IIIA metal, a group IVA metal, a transition metal, or a combination thereof. A metal oxide shell may be deposited onto metal oxide nanoparticles by dispersing the metal oxide nanoparticles in an alcohol, adding a metal carboxylate, and maintaining the reaction at a temperature ≦200° C. for an effective period of time to form core-shell nanoparticles. The nanoparticles may have a relative size dispersity of ≦20%, and may further comprise a plurality of carboxylic acid, carboxylate, and/or alcohol ligands coordinated to the nanoparticles' outer surfaces.
本发明揭示了制备金属氧化物纳米粒子的方法,包括混合金属氧化物和核壳金属氧化物纳米粒子。将含有金属羧酸盐和羧酸的溶液与含有醇的溶剂混合,在≦250°C的有效时间内加热,形成金属氧化物纳米粒子。金属可以是IIIA族金属、IVA族金属、过渡金属或其组合。通过将金属氧化物纳米粒子分散在醇中,加入金属羧酸盐,并在≦200°C的有效时间内保持反应,可以在金属氧化物纳米粒子上沉积金属氧化物壳层,形成核壳纳米粒子。纳米粒子的相对尺寸分散度可以≦20%,并且可能进一步包含多个羧酸、羧酸盐和/或醇配体协同到纳米粒子的外表面。