Synthesis and Characterization of TiO2@C Core−Shell Composite Nanoparticles and Evaluation of Their Photocatalytic Activities

摘要: TiO2@C core−shell composite nanoparticles were synthesized by a simple and efficient single-step method in specially made Swagelok cell at different temperatures. The prepared samples characterized XRD, diffuse reflectance-UV−vis, Raman, TEM, HRTEM, N2 adsorption−desorption methods. carbon content the can be varied with reaction time temperature. It is evident from TEM analysis that as-prepared are structures of TiO2, anatase phase, C. diameter range 15−35 nm. HRTEM results showed few graphitic layers wrapped on surface these responsible for suppressing other phase formations TiO2 even high However, percentage points rutile observed temperature (900 °C), evidenced Raman analysis. tested their photochemical activities 4-chlorophenol degradation. sample 7...