气候变化领域集成服务门户(CCPortal): Characterization of clay and nanoclay extracted from a semi-arid Vertisol and investigation of their carbon sequestration potential

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DOI	10.1007/s10661-023-12246-x
	Characterization of clay and nanoclay extracted from a semi-arid Vertisol and investigation of their carbon sequestration potential
	Sadri, Niloofar; Baghernejad, Majid; Ghasemi-Fasaei, Reza; Moosavi, Ali Akbar; Hardie, Ailsa G.
发表日期	2024
ISSN	0167-6369
EISSN	1573-2959
起始页码	196
结束页码	1
卷号	196 期号:1
英文摘要	Mitigation of global climate change by means such as soil carbon (C) sequestration has become an important area of research. Soil organic matter (SOM) that is stabilized with clay minerals is the most persistent in soils. Currently, little is known regarding the C sequestration ability of nanoclay extracted from Vertisols in semi-arid regions. Therefore, the aim of this study was to extract and characterize nanoclay and bulk clay from a Vertisol from Iran, in terms of physicochemical surface properties and resistance of SOM to chemical oxidation. The clay fractions were studied before and after H2O2 treatment by total C analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), pyrolysis gas chromatography mass spectrometry (GC-MS), Fourier transform infrared (FTIR) spectroscopy, specific surface area analysis, and zeta potential. TEM and SEM images showed that the diameter of the extracted nanoclays was 16-46 nm and their morphology was more porous than bulk soil clay. The nanoclay had a much greater specific surface area (111.9 m(2) g(-1)) than the bulk clay (67.9 m(2) g(-1)). According to total C, FTIR, and zeta potential results, the nanoclay was enriched with 1.4 times more C than the bulk clay after peroxide treatment, indicating enhanced soil C stabilization in the nanoclay. About 45% of the peroxide-resistant SOM in the nanoclay was associated with N-containing compounds, indicating that these compounds contribute to SOM stability. The results demonstrate important role of nanoclay in soil C sequestration in Vertisols.
英文关键词	Nanotechnology; Soil organic carbon stabilization; Soil organic matter; 2:1 clays; Zeta potential
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001132357600003
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301396
作者单位	Shiraz University; Stellenbosch University
推荐引用方式 GB/T 7714	Sadri, Niloofar,Baghernejad, Majid,Ghasemi-Fasaei, Reza,et al. Characterization of clay and nanoclay extracted from a semi-arid Vertisol and investigation of their carbon sequestration potential[J],2024,196(1).
APA	Sadri, Niloofar,Baghernejad, Majid,Ghasemi-Fasaei, Reza,Moosavi, Ali Akbar,&Hardie, Ailsa G..(2024).Characterization of clay and nanoclay extracted from a semi-arid Vertisol and investigation of their carbon sequestration potential.ENVIRONMENTAL MONITORING AND ASSESSMENT,196(1).
MLA	Sadri, Niloofar,et al."Characterization of clay and nanoclay extracted from a semi-arid Vertisol and investigation of their carbon sequestration potential".ENVIRONMENTAL MONITORING AND ASSESSMENT 196.1(2024).