期刊
MATERIALS LETTERS
卷 284, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2020.128911
关键词
CuO-bentonite-gold nanocomposites; Tinospora crispa extract; Pillarization; Characterization
资金
- Ministry of Research and Technology/National Research and Innovation Agency (Kemenristek/BRIN) through Universitas Indonesia [NKB-229/UN2.RST/HKP.05.00/2020]
In this study, a facile green synthesis method for CuO-bentonite-gold nanocomposites was designed using pillarization-immobilization. CuO was successfully pillared in bentonite with Tinospora crispa leaf extract, and gold nanoparticles were immobilized in the interlayer. The dspacing value of CuO-bentonite indicated successful pillarization, and the formation of AuNPs in the interlayer was confirmed by XRD and EDX.
In this work, we design a facile green preparation of CuO-bentonite-gold nanocomposites by a pillarization-immobilization method. Bentonite has been successfully pillared with CuO (CuOBentonite) by using Tinospora crispa leaf extract. Gold nanoparticle (AuNPs) has immobilized in the inter layer of CuO-Bentonite. The presence of an amine group acts as a source of nitrogen bases for a hydrolyzing agent in the formation of CuO-bentonite. Meanwhile, the flavonoid secondary metabolites play an essential role in reducing Au3+ to Au-0 nanoparticles. The dspacing value of CuO-bentonite was greater than dspacing value of Na-bentonite at 2h of 5.29 degrees, indicating CuO has been pillared in the bentonite interlayer. Moreover, AuNPs was systemically formed in the interlayer of CuO-bentonite confirmed by XRD and EDX. The morphology of CuO-bentonite-gold nanocomposites was in a layered shape with a particle size of approximately 30 nm. Additionally, this work reported a simple, affordable, and less-toxic method to modify bentonite for better performance. (c) 2020 Elsevier B.V. All rights reserved.
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