Effects of Catalyst Pretreatment on Carbon Nanotube Synthesis from Methane Using Thin Stainless-Steel Foil as Catalyst by Chemical Vapor Deposition Method

被引：5

作者：

Huynh, Thuan Minh ^{[1
]}

Nguyen, Sura ^{[1
]}

Nguyen, Ngan Thi Kim ^{[1
]}

Nguyen, Huan Manh ^{[1
]}

Do, Noa Uy Pham ^{[1
]}

Nguyen, Danh Cong ^{[2
]}

Nguyen, Luong Huu ^{[1
]}

Nguyen, Cattien V. ^{[3
]}

机构：

[1] Vietnam Petr Inst, Petrovietnam R&D Ctr Petr Proc, Lot E2b-5,D1 St,Saigon Hitech Pk,Dist 9, Hochiminh City 708400, Vietnam

[2] Saigon Hitech Pk Res Labs, Lot I3,N2 St,Saigon Hitech Pk,Dist 9, Hochiminh City 708400, Vietnam

[3] NTherma Corp, 458 S Hillview Dr, Milpitas, CA 95035 USA

来源：

NANOMATERIALS | 2021年 / 11卷 / 01期

关键词：

carbon nanotubes; stainless-steel foil catalyst; chemical vapor deposition; semiconductor; pretreatment;

D O I：

10.3390/nano11010050

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Synthesis of carbon nanotubes (CNTs) was carried out using methane as a carbon source via the chemical vapor deposition (CVD) method. A thin stainless-steel foil was used as catalyst for CNT growth. Our results revealed that pretreatment step of the stainless-steel foil as a catalyst plays an important role in CNT formation. In our experiments, a catalyst pretreatment temperature of 850 degrees C or 950 degrees C was found to facilitate the creation of Fe- and Cr-rich particles are active sites on the foil surface, leading to CNT formation. It is noted that the size of metallic particles after pretreatment is closely related to the diameter of the synthesized CNTs. It is interesting that a shorter catalyst pretreatment brings the growth of semiconducting typed CNTs while a longer pretreatment creates metallic CNTs. This finding might lead to a process for improving the quality of CNTs grown on steel foil as catalyst.

引用

页码：1 / 13

页数：13

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