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Title: The precipitation synthesis of broad-spectrum UV absorber nanoceria

In this paper the possibility of nanoceria as broad-spectrum UV absorber was evaluated. Nanoceria were synthesized by precipitation process from cerium nitrate solution and ammonium hydroxide as precipitant agent. Isopropanol was mixed with water as solvent to prevent hard agglomeration. The structure of resulting nanoceria was characterized by x-ray diffractometer (XRD). The transparency in the visible light and efficiency of protection in UV A region were studied using ultraviolet-visible (UV - Vis) spectrophotometer. The results show that nanoceria possess good tranparency in visible light and high UV light absorption. The critical absorption wavelenght of 368 nm was obtained which is desirable for excellent broad-spectrum protection absorbers. Moreover, analysis of photodegradation nanoceria to methylene blue solution shows poor photocatalytic activity. It indicates that nanoceria suitable for used as UV absorber in personal care products.
Authors:
; ;  [1]
  1. Department of Physics, Faculty of Science and Mathematics, Universitas Diponegoro Jl. Prof. Soedarto, S.H, Tembalang Semarang 50275 (Indonesia)
Publication Date:
OSTI Identifier:
22218079
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1554; Journal Issue: 1; Conference: PIPS-2013: Padjadjaran international physics symposium 2013: Contribution of physics on environmental and energy conservations, Padjadjaran (Indonesia), 7-9 May 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; AGGLOMERATION; CERIUM NITRATES; CERIUM OXIDES; METHYLENE BLUE; NANOSTRUCTURES; OPACITY; PHOTOCATALYSIS; PHOTOLYSIS; PRECIPITATION; PROPANOLS; SOLVENTS; SYNTHESIS; ULTRAVIOLET RADIATION; ULTRAVIOLET SPECTRA; VISIBLE RADIATION; VISIBLE SPECTRA; X-RAY DIFFRACTION