We first report a novel carbon morphology that we name “carbon nanopears” via facile one-step process by using chemical vapor deposition in the presence of silicon wafer as a substrate coating Ni catalyst, thiophene as the growth promoter and benzene as carbon source. The carbon nanopears observed under optimized experimental conditions have nanometer-sized sharp tips, nanometer-sized roots and solid interiors. The carbon nanopears are composed of graphitized carbon and amorphous carbon, with continuous shortening of the length of graphitic sheets from the exterior to interior making them pear-shaped. Furthermore, a probable CNP formation mechanism is proposed in this paper.

我们首先报告一种新颖的碳形态，我们通过在硅片作为基底涂层Ni催化剂，噻吩作为生长促进剂和苯作为碳源的存在下使用化学气相沉积，通过简便的一步法将其命名为“碳纳米豆”。在优化的实验条件下观察到的碳纳米豌豆具有纳米级的尖锐尖端，纳米级的根部和坚固的内部。碳纳米豌豆由石墨化碳和无定形碳组成，石墨片的长度从外部到内部不断缩短，使其呈梨形。此外，本文提出了一种可能的CNP形成机理。