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Main Title: Biocarbonation: a novel method for synthesizing nano-zinc/zirconium carbonates and oxides
Author(s): Abdel-Gawwad, Hamdy A.
Saleh, Alaa A.
Sikora, Pawel
Elrahman, Mohamed Abd
Mohammed, Mona S.
Hussein, Hala S.
Ads, Essam Nabih
Type: Article
Language Code: en
Abstract: It is well known that the chemical precipitation is regarded as an effective approach for the preparation of nano-materials. Nevertheless, it represented several drawbacks, including high energy demand, high cost, and high toxicity. This work investigated the eco-sustainable application of plant-derived urease enzyme (PDUE)-urea mixture for synthesizing Zn–/Zr–carbonates and –oxides nanoparticles. Hydrozincite nanosheets and spherical-shaped Zr-carbonate nano-particles were produced after adding PDUE-urea mixture to the dissolved Zn and Zr salts, respectively. PDUE not only acts as a motivator for urea hydrolysis, but it is also used as a dispersing agent for the precipitated nano-carbonates. The exposure of these carbonates to 500 °C for 2 h has resulted in the production of the relevant oxides. The retention time (after mixing urea with urease enzyme) is the dominant parameter which positively affects the yield% of the nano-materials, as confirmed by statistical analyses. Compared with traditional chemical-precipitation, the proposed method exhibited higher efficiency in the formation of nano-materials with smaller particle size and higher homogeneity.
Issue Date: 1-Oct-2020
Date Available: 14-Jan-2021
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Subject(s): nanoparticles
crystal structure
urease enzyme-urea
Sponsor/Funder: EC/H2020/841592/EU/Ultra-Lightweight Concrete for 3D printing technologies/Ultra-LightCon-3D
Journal Title: Arabian Journal of Chemistry
Publisher: Elsevier
Publisher Place: Amsterdam
Volume: 13
Issue: 11
Publisher DOI: 10.1016/j.arabjc.2020.09.040
Page Start: 8092
Page End: 8099
ISSN: 1878-5352
Appears in Collections:FG Baustoffe und Bauchemie » Publications

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