title: A facile thermal-treatment route to synthesize ZnO nanosheets and effect of calcination temperature.
abstract: A facile thermal-treatment route was successfully used to synthesize ZnO nanosheets. Morphological, structural, and optical properties of obtained nanoparticles at different calcination temperatures were studied using various techniques. The FTIR, XRD, EDX, SEM and TEM images confirmed the formation of ZnO nanosheets through calcination in the temperature between 500 to 650 °C. The SEM images showed a morphological structure of ZnO nanosheets, which inclined to crumble at higher calcination temperatures. The XRD and FTIR spectra revealed that the samples were amorphous at 30 °C but transformed into a crystalline structure during calcination process. The average particle size and degree of crystallinity increased with increasing calcination temperature. The estimated average particle sizes from TEM images were about 23 and 38 nm for the lowest and highest calcination temperature i.e. 500 and 650 °C, respectively. The optical properties were determined by UV-Vis reflection spectrophotometer and showed a decrease in the band gap with increasing calcination temperature.
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang, Selangor, Malaysia.
authors.forename: Naif Mohammed
authors.initials: NM
authors.lastname: Al-Hada
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang, Selangor, Malaysia.
authors.forename: Elias B
authors.initials: EB
authors.lastname: Saion
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang, Selangor, Malaysia.
authors.forename: Abdul Halim
authors.initials: AH
authors.lastname: Shaari
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang, Selangor, Malaysia.
authors.forename: Mazliana A
authors.initials: MA
authors.lastname: Kamarudin
authors.affiliation: School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia.
authors.forename: Moayad Husein
authors.initials: MH
authors.lastname: Flaifel
authors.affiliation: School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia.
authors.forename: Sahrim Hj
authors.initials: SH
authors.lastname: Ahmad
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang, Selangor, Malaysia.
authors.forename: Salahudeen A
authors.initials: SA
authors.lastname: Gene
mesh_terms: D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D009566:Nitrates / Q000737:chemistry; D011205:Povidone / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D009566:Nitrates; D017967:Zinc Compounds; D014867:Water; C042103:zinc nitrate; D011205:Povidone; D015034:Zinc Oxide
references.citation: ACS Nano. 2008 Oct 28;2(10):1987-92
references.pmid: 19206442
references.citation: Materials (Basel). 2011 Jun 17;4(6):1132-1143
references.pmid: 28879971
references.citation: Nanomedicine. 2011 Apr;7(2):184-92
references.pmid: 21034861
references.citation: Small. 2009 Feb;5(2):181-4
references.pmid: 19107888
references.citation: J Colloid Interface Sci. 2009 May 15;333(2):465-73
references.pmid: 19286190