TY - JOUR
T1 - A novel mechano-chemical synthesis route for fluorination of hexagonal boron nitride nanosheets
AU - ul Ahmad, A.
AU - Liang, Hongwei
AU - Abbas, Q.
AU - Ali, S.
AU - Iqbal, Muzammil
AU - Farid, A.
AU - Abbas, Akmal
AU - Farooq, Z.
N1 - Funding Information:
This work was supported by National Science Foundation of China (11675198) and National Key R&D Plan (Nos. 2016YFB0400600, 2016YFB0400601).
Funding Information:
This work was supported by National Science Foundation of China ( 11675198 ) and National Key R&D Plan (Nos. 2016YFB0400600 , 2016YFB0400601 ).
Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2019/10/15
Y1 - 2019/10/15
N2 - This paper presents a facile, two-step mechano-chemical route to exfoliate and fluorinate hexagonal boron nitride nanosheets (BNNSs). The influence of fluorine (F) chemisorption on the optical and magnetic properties of BNNSs is investigated. It has been observed experimentally, by increasing fluorine concentration, band gap lowers from ∼5 to 4.17 eV and saturation magnetization and coercivity achieved the values of 1.8322 × 10−3 emu/g and 157.25 Oe, respectively. Furthermore, results strongly supported that during synthesis there is a direct correlation between different number of few atomic layers and adsorption of fluorine atoms towards fluorination of BNNSs. Moreover, the defective boron sites are thermodynamically most stable and favorable for fluorine adsorption to form stable B–F bonds as compared to N–F bonds. Such observations are additionally supported by theoretical calculations considering various possible fluorine-based defects in h-BN nanostructure. Hence, a narrow optical band gap with a room temperature weak ferromagnetic diluted magnetic semiconducting behavior of BNNSs via fluorination will expand their usage in designing/fabricating magnetic, electronic and nano-devices.
AB - This paper presents a facile, two-step mechano-chemical route to exfoliate and fluorinate hexagonal boron nitride nanosheets (BNNSs). The influence of fluorine (F) chemisorption on the optical and magnetic properties of BNNSs is investigated. It has been observed experimentally, by increasing fluorine concentration, band gap lowers from ∼5 to 4.17 eV and saturation magnetization and coercivity achieved the values of 1.8322 × 10−3 emu/g and 157.25 Oe, respectively. Furthermore, results strongly supported that during synthesis there is a direct correlation between different number of few atomic layers and adsorption of fluorine atoms towards fluorination of BNNSs. Moreover, the defective boron sites are thermodynamically most stable and favorable for fluorine adsorption to form stable B–F bonds as compared to N–F bonds. Such observations are additionally supported by theoretical calculations considering various possible fluorine-based defects in h-BN nanostructure. Hence, a narrow optical band gap with a room temperature weak ferromagnetic diluted magnetic semiconducting behavior of BNNSs via fluorination will expand their usage in designing/fabricating magnetic, electronic and nano-devices.
KW - Ball milling
KW - BNNSs
KW - Exfoliation
KW - Fluorination and band gap calculation
UR - http://www.scopus.com/inward/record.url?scp=85067467419&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2019.06.164
DO - 10.1016/j.ceramint.2019.06.164
M3 - Article
AN - SCOPUS:85067467419
SN - 0272-8842
VL - 45
SP - 19173
EP - 19181
JO - Ceramics International
JF - Ceramics International
IS - 15
ER -