期刊
ARABIAN JOURNAL OF CHEMISTRY
卷 12, 期 2, 页码 262-271出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.arabjc.2017.08.003
关键词
Biosynthesis; Biosilica; Nanogold; Catalysis; Soman
资金
- SGS projects of Czech Republic [SP2015/65, SP2016/72]
- project VG of Ministry of Interior of Czech Republic [20102014049]
- Ministry of Education, Youth and Sports of CR [LQ1604]
- project BIOCEV [CZ.1.05/1.1.00/02.0109]
- Scientific Grant Agency of the Ministry of Education of Slovak Republic
- Slovak Academy of Sciences [VEGA 1/0164/17, KEGA 014SPU-4/2016]
A very fast single-step biosynthesis of gold nanoparticles (AuNPs) using algal cells of Mallomonas kalinae (MK) is introduced. The average particle size of crystalline AuNPs was approximately 10 nm. Subsequently, the catalytic activity of two systems - MK-biosilica scales and MK-biosilica scales with AuNPs - was compared with a control hydrolysis of soman (GD) performed in demineralized water. The kinetics of GD degradation was studied using a gas chromatography with mass detector (GC-MS) and solid-phase microextraction. The residual content of GD was 3.8% and 3.5% for both initial concentrations of GD (68 mu g mL(-1) and 340 mu g L-1, respectively) after 48 h of testing when nanogold was used as a catalyst. Experimental results confirmed the catalytic activity of biosynthesized AuNPs, as well as the role of biosilica itself in the degradation of GD. (C) 2017 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
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