Deposition of Au nanoparticles inside porous CeO2 nanocubes using Langmuir-Blodgett technique

作者：Das Subhasis; Bhattacharjee Gourab; Satpati Biswarup; Kumar Mukesh; Deka Sasanka; Ghosalya Manoj Kumar; Gopinath Chinnakonda S; Bala Tanushree

来源：New Journal of Chemistry, 2018, 42(2): 1379-1386.

DOI：10.1039/c7nj03948d

Porous 3D CeO2 nanocubes were synthesized using hot injection technique. These nanocubes were able to form a stable monolayer over water and HAuCl4 subphase in Langmuir-Blodgett (LB) trough due to the presence of surface capped oleic acid and oleylamine. CeO2-Au nanocomposites were synthesized exploiting the ability of oleylamine to reduce AuCl4 ions to Au-0, via LB method. CeO2 nanocubes gave rise to excellent long-range assembly at air/water interface and gold nanoparticles were formed inside these porous nanocubes without disturbing this arrangement. The formation of a stable monolayer was evidenced from the surface pressure-area (P-A) isotherm. The development of Au nanoparticles was confirmed with great effort from a comprehensive study using UV-Vis spectroscopy, XRD, XPS, FTIR, TEM, STEM, EDX, tomography and chemical mapping.

• 出版日期2018-1-21