Sodium Lignosulfonate Induced Vaterite Calcium Carbonate with Multilayered Structure. Issue 6 (8th January 2014)

• Record Type: Journal Article
• Authors: Guo, Hongxia; Sun, Pengzhi; Qin, Zhenping; Shan, Linglong; Zhang, Guojun; Cui, Suping; Liang, Yucang
• Is Part Of: European journal of inorganic chemistry. Issue 6(2014)
• Page Start: 1001
• Page End: 1009
• Publication Date: 2014-01-08
• Subjects: Biomineralization -- Sodium lignosulfonate -- Crystal phases -- Vaterite -- Calcium carbonate; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201301228
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: Sodium lignosulfonate (SL), a byproduct of the pulping industry, was used as a stabilizer for the mineralization of CaCO3 . In a calcium acetate–urea–water system, the direct aging of the aqueous solution of calcium acetate and urea resulted in the formation of mixed aragonite and vaterite phases or a pure aragonite phase depending on the aging time. However, SL was introduced into the calcium acetate–urea–water system to markedly stabilize the formation of a thermodynamically unstable vaterite phase. Various morphologies of vaterite structures were observed by adjusting the concentration of urea and SL as well as the aging time. Based on these results, ion exchange, carbonate attacking the calcium(II) ions, aggregations of SL‐stabilized primary CaCO3 particles through oriented attachment and Ostwald ripening, as well as mesoscale self‐assembly were proposed as mechanisms to elucidate the formation of various morphologies. Abstract : Sodium lignosulfonate (SL), a byproduct of the pulping industry, was used as a stabilizer for the mineralization of CaCO3 . The phase transformation of CaCO3 crystals from stable aragonite to less stable vaterite superstructures occurred according to the existence of SL additive. The morphologies of vaterite structures can be obtained by adjusting the concentration of urea and SL as well as aging time.