TY - JOUR
T1 - Nanocomposite synthesis from a natural clay-rich soils and exhausted coffee grounds for environmental applications
AU - Urdapilleta-Inchaurregui, Vianey
AU - Fernández-Luqueño, Fabián
AU - Torres-Huerta, Aidé Minerva
AU - Roa-Velázquez, Daniela
AU - Rodríguez-Varela, Francisco Javier
AU - Sánchez-Castro, María Esther
N1 - Publisher Copyright:
© 2020 Trans Tech Publications Ltd, Switzerland.
PY - 2020
Y1 - 2020
N2 - Natural clays, engineered Ag-nanoparticles (NP), TiO2-NP, and exhausted coffee grounds were used to synthesize a nanocomposite 7NC using a Vertisol soil through a single-step by thermal method, to build a nanomaterial to degrade or filtrate pollutants from soils, water or air. The surface characteristics and the porosity of the composite were studied through nitrogen gas adsorption at liquid nitrogen temperature and application of the Brunauer–Emmett–Teller (BET) equation and the results indicated that the microporous composites ranged a surface area of 17.36 m2 g-1. X-ray diffraction showed crystalline structure and crystalline phase of the nanocomposites. HR-TEMSTEM results demonstrated that TiO2-NP surrounded Ag-NP, and both were impregnated on natural soil nanoparticles. Oxidation states of the Ag-NP and TiO2-NP were analyzed by X-ray photoelectron spectroscopy (XPS) The energy gap of nanocomposite 7NC was determined using the Kubelka- Munck model from Ultraviolet–visible diffuse reflectance (UV–Visible DRS) spectra. The photocatalytic activity of these nanocomposites was evaluated, and the results indicated that nanocomposite with Vertisol-soil-NP (7NC) degraded the harmful organic compound methylene blue (MB) while the antimicrobial activity and resistance against Escherichia coli and Staphylococcus aureus and the zone of inhibition (ZOI) also were analyzed. The nanocomposites Ag-NP/TiO2- NP/natural-soil-NP/exhausted coffee-ground showed its for the development of an efficient material for environmental remediation with photocatalytic and antimicrobial activity.
AB - Natural clays, engineered Ag-nanoparticles (NP), TiO2-NP, and exhausted coffee grounds were used to synthesize a nanocomposite 7NC using a Vertisol soil through a single-step by thermal method, to build a nanomaterial to degrade or filtrate pollutants from soils, water or air. The surface characteristics and the porosity of the composite were studied through nitrogen gas adsorption at liquid nitrogen temperature and application of the Brunauer–Emmett–Teller (BET) equation and the results indicated that the microporous composites ranged a surface area of 17.36 m2 g-1. X-ray diffraction showed crystalline structure and crystalline phase of the nanocomposites. HR-TEMSTEM results demonstrated that TiO2-NP surrounded Ag-NP, and both were impregnated on natural soil nanoparticles. Oxidation states of the Ag-NP and TiO2-NP were analyzed by X-ray photoelectron spectroscopy (XPS) The energy gap of nanocomposite 7NC was determined using the Kubelka- Munck model from Ultraviolet–visible diffuse reflectance (UV–Visible DRS) spectra. The photocatalytic activity of these nanocomposites was evaluated, and the results indicated that nanocomposite with Vertisol-soil-NP (7NC) degraded the harmful organic compound methylene blue (MB) while the antimicrobial activity and resistance against Escherichia coli and Staphylococcus aureus and the zone of inhibition (ZOI) also were analyzed. The nanocomposites Ag-NP/TiO2- NP/natural-soil-NP/exhausted coffee-ground showed its for the development of an efficient material for environmental remediation with photocatalytic and antimicrobial activity.
KW - Antimicrobial
KW - Environmental pollution
KW - Nanoremediation
KW - Natural soil
KW - Photocatalytic
KW - Photodegradation
KW - Remediation
KW - Surface area
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=85087454620&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/JNanoR.63.47
DO - 10.4028/www.scientific.net/JNanoR.63.47
M3 - Artículo
AN - SCOPUS:85087454620
SN - 1662-5250
VL - 63
SP - 47
EP - 63
JO - Journal of Nano Research
JF - Journal of Nano Research
ER -