Sol-gel and sonochemically derived transition metal (Co, Ni, Cu, and Zn) chromites as pigments: A comparative study

GRAŽÉNAITÉ, Egle, Jiří PINKAS, Aldona BEGANSKIENE and Aivaras KAREIVA. Sol-gel and sonochemically derived transition metal (Co, Ni, Cu, and Zn) chromites as pigments: A comparative study. Ceramics International. OXFORD: Elsevier, vol. 42, No 8, p. 9402-9412. ISSN 0272-8842. doi:10.1016/j.ceramint.2016.02.163. 2016.

Basic information

• Original name: Sol-gel and sonochemically derived transition metal (Co, Ni, Cu, and Zn) chromites as pigments: A comparative study
• Authors: GRAŽÉNAITÉ, Egle (440 Lithuania), Jiří PINKAS (203 Czech Republic, guarantor, belonging to the institution), Aldona BEGANSKIENE (440 Lithuania) and Aivaras KAREIVA (440 Lithuania).
• Edition: Ceramics International, OXFORD, Elsevier, 2016, 0272-8842.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10402 Inorganic and nuclear chemistry
• Country of publisher: United Kingdom of Great Britain and Northern Ireland
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 2.986
• RIV identification code: RIV/00216224:14310/16:00090809
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.ceramint.2016.02.163
• UT WoS: 000374811600011
• Keywords in English: Sol-gel process; Colour; Spinels; Sonochemical synthesis
• Tags: AKR, rivok
• Tags: International impact, Reviewed

Abstract

Cobalt chromite based pigments Co1-xMxCr2O4 (M = Ni, Cu, and Zn) with different transition metal concentrations (0 <= x <= 1 with a step of 0.25) have been synthesized applying two aqueous synthesis approaches: sol-gel and sonochemical synthesis routes. The heat treatment of precursor powders was performed between 600 and 800 degrees C. XRD analysis of the obtained powders revealed that all samples fabricated by sol-gel method have crystallised in a spinel structure, whereas sonochemical synthesis of Ni chromite at lower calcination temperatures showed the formation of mixtures of oxides. In addition, the degree of crystallinity and shaping of sonochemically obtained compounds is lower than sol-gel derived products. The chromites with a higher nicicel concentration displayed green colour, while Cu substituted pigments were nearly black. The spinels with a higher Zn amount were yellowish green.

Links

• ED1.1.00/02.0068, research and development project: Name: CEITEC - central european institute of technology
• LQ1601, research and development project: Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR