Abstract for Oral Presentation
Thematic area :Nanocomposites and Nanomaterials

Highly efficient visible light photocatalytic activity of  Ni Quantum Dots decorated MoS2-MWCNT composite
 Amit Srivastava1, 2,*,Jasleen K Bindra3, Stephen McGill3 , Naresh Dalal3
1.Department of Physics,TDPG College,VBS Purvanchal University,Jaunpur-222001,India
2.Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306,USA
3.National High Magnetic Field Laboratory,1800 East Paul Dirac Drive,Tallahassee,Florida 32310,USA
*Email:amitrac@gmail.com

  A simple and feasible chemical exfoliation method has been designed to synthesize Ni quantum dots decorated MoS2-MWCNT composite catalyst.  Crystal structure, surface morphology, chemical states of all elements, and optical property of the as synthesized composite have been characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy, Raman spectroscopy and UV-Vis diffuse reflectance spectroscopy techniques respectively. The photocatalytic activity of all the samples bare MoS2,Ni Quantum dots decorated MoS2 and Ni Quantum dots decorated MoS2-MWCNT composites were evaluated by measuring decomposition rate of Rhodamine 6C solution under visible light irradiation. The result reveals that Ni Quantum dots decorated MoS2-MWCNT composites exhibits higher visible light photocatalytic activity than that of pure MoS2 and Ni Quantum dots decorated MoS2.The Ni Quantum dots decorated MoS2-MWCNT composite can decompose 60% Rhodamine 6C after 120 minutes under visible light irradiation. Moreover such a hetero structure possesses a strong adsorption ability towards organic dyes and show high performance in photo-catalytic degradation of the dye molecules. The mechanism for the enhancement of  dye degradation has also been discussed.