Jiang Bo, Yuan Yifei, Wang Wei, He Kun, Zou Chao, Chen Wei, Yang Yun, Wang Shun, Yurkiv Vitaliy, Lu Jun
Nanomaterials and Chemistry Key Laboratory, Wenzhou University, Wenzhou, China.
Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA.
Nat Commun. 2021 Sep 27;12(1):5661. doi: 10.1038/s41467-021-25969-7.
Hybrid nanocrystals combining different properties together are important multifunctional materials that underpin further development in catalysis, energy storage, et al., and they are often constructed using heterogeneous seeded growth. Their spatial configuration (shape, composition, and dimension) is primarily determined by the heterogeneous deposition process which depends on the lattice mismatch between deposited material and seed. Precise control of nanocrystals spatial configuration is crucial to applications, but suffers from the limited tunability of lattice mismatch. Here, we demonstrate that surface lattice engineering can be used to break this bottleneck. Surface lattices of various Au nanocrystal seeds are fine-tuned using this strategy regardless of their shape, size, and crystalline structure, creating adjustable lattice mismatch for subsequent growth of other metals; hence, diverse hybrid nanocrystals with fine-tuned spatial configuration can be synthesized. This study may pave a general approach for rationally designing and constructing target nanocrystals including metal, semiconductor, and oxide.
将不同性质结合在一起的混合纳米晶体是重要的多功能材料，为催化、能量存储等领域的进一步发展奠定了基础，并且它们通常通过异质籽晶生长来构建。它们的空间构型（形状、组成和尺寸）主要由异质沉积过程决定，而异质沉积过程取决于沉积材料与籽晶之间的晶格失配。精确控制纳米晶体的空间构型对应用至关重要，但受到晶格失配可调性有限的困扰。在此，我们证明表面晶格工程可用于突破这一瓶颈。使用该策略可对各种金纳米晶体籽晶的表面晶格进行微调，而不管其形状、尺寸和晶体结构如何，为后续其他金属的生长创造可调节的晶格失配；因此，可以合成具有微调空间构型的多种混合纳米晶体。该研究可能为合理设计和构建包括金属、半导体和氧化物在内的目标纳米晶体开辟一条通用途径。
