Lin Minghui, Liu Yushun, Zhu Guozhen
State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
Department of Mechanical Engineering and Manitoba Institute for Materials, University of Manitoba, 75A Chancellors Circle, Winnipeg, MB R3T 5V6, Canada.
ACS Omega. 2020 Jan 13;5(3):1566-1571. doi: 10.1021/acsomega.9b03519. eCollection 2020 Jan 28.
In this work, we demonstrate Mn-promoted growth of oxide nanostructures standing on a single-crystal MgAlO substrate after heat treatment. Unlike the short truncated spinel pyramids under Au seeds, the addition of Mn produces spinel nanopillars with lengths of 100-300 nm and pyroxene nanowires up to 10 μm. Compared to Au seeds, Au/Mn seeds have different adsorption behavior and therefore provide an additional mass transfer path along seed surfaces that promotes the growth of nanostructures. This vaporization approach has a potential of being applicable to a wide range of complicated oxides.
在这项工作中，我们展示了在热处理后，锰促进了站立在单晶MgAlO衬底上的氧化物纳米结构的生长。与金种子下的短截尖晶石金字塔不同，锰的添加产生了长度为100 - 300纳米的尖晶石纳米柱和长达10微米的辉石纳米线。与金种子相比，金/锰种子具有不同的吸附行为，因此沿着种子表面提供了一条额外的传质路径，促进了纳米结构的生长。这种蒸发方法有可能适用于广泛的复杂氧化物。
