Single-walled carbon nanotubes (SWNTs) have shown great potential in various applications attributed to their unique structures and outstanding structure-dependent properties. The structure-controlled growth of SWNTs is a crucial issue for their advanced applications and has been a great challenge in this field for two decades. Metal catalyst-mediated SWNT growth is believed to be very efficient. In this review, progresses in diameter and chirality controlled growth of SWNTs with metal catalysts is summarized from several aspects, including growth mechanism and theory, effects of catalysts, and the chemical vapor deposition conditions. The design, preparation, handling and dispersion, and the size evolution of metal catalysts are all discussed. The influences of growth environment including the type, composition, and pressure/concentration of the carbon source as well as the temperature on the selectivity toward the nanotube structure are analyzed. We also discuss some of the challenges and trends in this field.

中文翻译：

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用于单壁碳纳米管结构控制生长的金属催化剂

单壁碳纳米管（SWNT）由于其独特的结构和出色的与结构有关的特性，在各种应用中都显示出巨大的潜力。单壁碳纳米管的结构控制增长是其先进应用的关键问题，并且在过去的二十年中一直是该领域的巨大挑战。金属催化剂介导的SWNT生长被认为是非常有效的。本文综述了金属催化剂在单壁碳纳米管的直径和手性控制生长方面的进展，包括生长机理和理论，催化剂的作用以及化学气相沉积条件等方面。讨论了金属催化剂的设计，制备，处理和分散以及尺寸演变。生长环境的影响，包括类型，组成，分析了碳源的压力/浓度以及温度对纳米管结构的选择性。我们还将讨论该领域的一些挑战和趋势。