Synthesis of Thermally Stable h-BN-CNT Hetero-Structures via Microwave Heating of Ethylene under Nickel, Iron, and Silver Catalysts

被引：17

作者：

Itas, Yahaya Saadu ^{[1
]}

Ndikilar, Chifu E. ^{[2
]}

Zangina, Tasiu ^{[2
]}

Hafeez, Hafeez Yusuf ^{[2
]}

Safana, A. A. ^{[2
]}

Khandaker, Mayeen Uddin ^{[3
]}

Ahmad, Pervaiz ^{[4
]}

Abdullahi, Ismail ^{[1
]}

Olawumi, Badmus Kausara ^{[1
]}

Babaji, Muhammad Auwal ^{[1
]}

Osman, Hamid ^{[5
]}

Alamri, Sultan ^{[5
]}

机构：

[1] Bauchi State Univ Gadau, Dept Phys, PMB 65, Gadau 740001, Bauchi, Nigeria

[2] Fed Univ Dutse, Dept Phys, Gida Sitin 720101, Dutse, Nigeria

[3] Sunway Univ, Ctr Appl Phys & Radiat Technol, Sch Engn & Technol, Petaling Jaya 47500, Selangor, Malaysia

[4] Univ Azad Jammu & Kashmir, Dept Phys, Muzaffarabad 13100, Pakistan

[5] Taif Univ, Coll Appl Med Sci, Dept Radiol Sci, At Taif 21944, Saudi Arabia

来源：

CRYSTALS | 2021年 / 11卷 / 09期

关键词：

h-BN-CNT heterostructure; synthesis; thermogravimetry; DFT; thermal-stability; exchange-correlations; extrinsic semiconductor; BORON-NITRIDE NANOTUBES; CARBON NANOTUBES;

D O I：

10.3390/cryst11091097

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Initially, three samples of carbon nanotubes (SWCNTs) were synthesized from neem tree material. Afterward, these samples were coated with hexagonal boron nitride (h-BN) to form h-BN and CNT composite (h-BN-CNT). The essence of using h-BN (being a perfect insulator) with armchair SWCNT (being a conductor) is to create an interface between an insulator and conductor. The samples were treated under three different transition metal nanoparticles; silver, iron, and nickel. Thermogravimetric (TGA) analysis reveals that h-BN/CNT is thermally more stable with silver than iron and nickel nanoparticles. TGA profile showed resistance to mass loss at the beginning due to the higher thermal resistivity by the impurity compounds. The DFT calculation, generalized gradient approximation (GGA), and Perdew-Burke-Ernzerhof (PBE) analysis found engineered bandgap energy of 3.4 eV for the synthesized h-BN-CNT heterostructure. Because of its unique structural and electronic properties such as tunable bandgaps, the h-BN-CNT heterostructure may open new ways for manipulating excitons in the CNTs, and thus can be explored to develop various new electronic devices.

引用

页数：13