TY - JOUR ID - 65559 TI - Preparation and Characterisation of ZnO - SiO2 and Bi2O3 – CuO Nanocomposites JO - Nanochemistry Research JA - NCR LA - en SN - 2538-4279 AU - Subramaniyan, Alagappan AU - Visweswaran, Velajagadessa AU - Saravana Kumar, Chandrasekar AU - Sornakumar, Thambu AD - Department of Physics, Thiagarajar College of Engineering, Madurai 625006, T.N., India AD - Department of Mechanical Engineering, Thiagarajar College of Engineering Madurai 625006, T.N., India AD - Department of Mechanical Engineering, Thiagarajar College of Engineering Madurai 625006, T.N., Indi Y1 - 2018 PY - 2018 VL - 3 IS - 1 SP - 79 EP - 84 KW - Bi2O3–CuO KW - Sol gel KW - Nanocomposites KW - ZnO-SiO2 DO - 10.22036/ncr.2018.01.008 N2 - In the present work, ZnO - SiO2 and Bi2O3– CuO nanocomposites have been prepared by sol gel with alternate precursors existing in literature. They are characterised by XRD, SEM,UV, FTIR and photoluminescence  spectra .The XRD results indicate a crystallite size of  approximately 80 nm for both nanocomposites. SEM image shows a heterogeneous particle size for both samples. The band gap of ZnO - SiO2 and Bi2O3– CuO obtained from Taucs plot is 4.1 eV and 2.85 eV, respectively. PL spectra show high intensity absorption for ZnO-SiO2 in comparison to   Bi2O3–CuO. The composites of Bi2O3–CuO is recommended for efficient optical coating against the coating made from Bi2O3. UR - http://www.nanochemres.org/article_65559.html L1 - http://www.nanochemres.org/article_65559_727667e4ad37c3b654f797b4bf438fd1.pdf ER -