TY - GEN
T1 - Enhanced optical limiting of solubilized carbon nanotubesdecorated with Pt/Pd nanoparticles
AU - Pradhan, Prabin
AU - Muthukumar, V. Sai
AU - Molli, Muralikrishna
AU - Srivastava, Shailesh
AU - Sai, S. Siva Sankara
AU - Mitra, Somenath
PY - 2013
Y1 - 2013
N2 - We report here the nonlinear optical response of Solubilized Multiwalled Carbon Nanotubes(MWNTs) and these decorated with Platinum and Palladium Nanoparticles. Pristine MWNTs were functionalized with COOH group through microwave assisted synthesis route which rendered them soluble in water and other solvents too. Metal salts of Platinum and Palladium were further reduced to metal nanoparticles in presence of MWNT-COOH under microwave irradiation. These hybrid metal decorated carbon nanostructures were morphologically and functionally well characterized using SEM, EDAX, FTIR, UV-Visible etc., Using Z-scan technique, wecarried out nonlinear optical studies on aqueous dispersions (stable) of these metal decorated (Pt/Pd-MWNT-COOH) using a high power Nd:YAG Laser with 532 nm excitation with 10 nanosecond pulse width. These samples exhibited significant nonlinear absorption and scattering. The metal decorated MWNT-COOH (Pt-MWNT-COOH:2 Jcm-2; Pd-MWNT-COOH: 1.7Jcm -2)exhibited enhanced optical limiting which is more than plain MWNT-COOH samples and similar Metal-Graphene hybrid dispersions reported earlier in literature. These could be ideally suited for optical power limiting applications.
AB - We report here the nonlinear optical response of Solubilized Multiwalled Carbon Nanotubes(MWNTs) and these decorated with Platinum and Palladium Nanoparticles. Pristine MWNTs were functionalized with COOH group through microwave assisted synthesis route which rendered them soluble in water and other solvents too. Metal salts of Platinum and Palladium were further reduced to metal nanoparticles in presence of MWNT-COOH under microwave irradiation. These hybrid metal decorated carbon nanostructures were morphologically and functionally well characterized using SEM, EDAX, FTIR, UV-Visible etc., Using Z-scan technique, wecarried out nonlinear optical studies on aqueous dispersions (stable) of these metal decorated (Pt/Pd-MWNT-COOH) using a high power Nd:YAG Laser with 532 nm excitation with 10 nanosecond pulse width. These samples exhibited significant nonlinear absorption and scattering. The metal decorated MWNT-COOH (Pt-MWNT-COOH:2 Jcm-2; Pd-MWNT-COOH: 1.7Jcm -2)exhibited enhanced optical limiting which is more than plain MWNT-COOH samples and similar Metal-Graphene hybrid dispersions reported earlier in literature. These could be ideally suited for optical power limiting applications.
KW - Multiwalled Carbon Nanotube
KW - Nonlinear Scattering
KW - Platinum and Palladium Nanoparticles
KW - Z-scan
KW - optical power limiters
UR - http://www.scopus.com/inward/record.url?scp=84886423690&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84886423690&partnerID=8YFLogxK
U2 - 10.1109/ICANMEET.2013.6609274
DO - 10.1109/ICANMEET.2013.6609274
M3 - Conference contribution
AN - SCOPUS:84886423690
SN - 9781479913794
T3 - Proceedings of the International Conference on "Advanced Nanomaterials and Emerging Engineering Technologies", ICANMEET 2013
SP - 193
EP - 196
BT - Proceedings of the International Conference on "Advanced Nanomaterials and Emerging Engineering Technologies", ICANMEET 2013
T2 - 2013 International Conference on Advanced Nanomaterials and Emerging Engineering Technologies, ICANMEET 2013
Y2 - 24 July 2013 through 26 July 2013
ER -