Fabrication of hexagonal boron nitride quantum dots via a facile bottom-up technique. Issue 17 (1st December 2019)

• Record Type: Journal Article
• Authors: Ahmad, Pervaiz; Khandaker, Mayeen Uddin; Muhammad, Nawshad; Khan, Ghulamullah; Rehman, Fida; Khan, Amir Sada; Ullah, Zahoor; Khan, Abdulhameed; Ali, Hazrat; Ahmed, Syed Muzamil; Rauf Khan, M. Abdul; Iqbal, Javed; Khan, Ayaz Arif; Irshad, Muhammad Imran
• Is Part Of: Ceramics international. Volume 45:Issue 17(2019)Part B
• Page Start: 22765
• Page End: 22768
• Publication Date: 2019-12-01
• Subjects: Quantum-dots -- BNQDs -- Bottom-up -- Synthesis -- Biomedical; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.07.316
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The smaller size of the Boron nitride quantum dots (BNQDs) leads to the quantization of energy due to the confinement of electrons and holes. As a result, it behaves like an artificial atom with higher quantum yield. Unlike, previously used complex and lengthy experimental procedures, a facile bottom-up technique based on nanoscale precursors and dual roles of ammonia gas has been developed to synthesize BNQDs in 25 min growth duration at 1200 °C. Shape and morphology of the synthesized BNQDs look like beads of different sizes. Fast Fourier transform (FFT) shows a hexagonal atomic structure of the synthesized BNQDs whereas XPS, Raman, and XRD confirms the Boron and Nitrogen elemental compositions and hexagonal phase of the synthesized sample. The as-synthesized BNQDs has excellent properties for a variety of potential applications in the fields of biomedical (for bioimaging and drug delivery), microelectromechanical systems (MEMS), catalysis, sensors, and solid-state neutron detectors.