Physicochemical characterization of nanomaterials: polymorph, composition, wettability, and thermal stability

Barhoum, Ahmed; García-Betancourt, María Luisa; Rahier, Hubert; Assche, Guy Van

doi:10.1016/b978-0-323-51254-1.00009-9

Cited by 75 publications

(49 citation statements)

References 62 publications

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“…In comparison, the zeta potential of AgNPs-LMDR and AgNPs-UILM-600 W was −39.0 ± 6.2 mV and −47.3 ± 2.3 mV, respectively. As expected by theory, the value of zeta potential could influence dispersion and aggregation processes, and determined the stability of nanoparticles and colloids in solution [33] . Nanoparticles tended to be more stable as the increasing of zeta potential absolute value.…”

Section: Resultssupporting

confidence: 52%

Synthesis of monodisperse spherical AgNPs by ultrasound-intensified Lee-Meisel method, and quick evaluation via machine learning

Dong

Xue

et al. 2021

Ultrasonics Sonochemistry

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Section: Resultssupporting

confidence: 52%

Synthesis of monodisperse spherical AgNPs by ultrasound-intensified Lee-Meisel method, and quick evaluation via machine learning

Dong

Xue

et al. 2021

Ultrasonics Sonochemistry

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“…Highly dispersed nanoparticles such as CDs have zeta potential values greater than +30 mV or less than −30 mV [54]. Particles at nano-dimension having zeta potential values ranging from −10 to +10mV are considered to be neutral [55]. The zeta potential is very sensitive to the changes happening upon dilution, such as the variations in pH and ionic strength [54].…”

Section: Freundlich Isothermmentioning

confidence: 99%

“…Carbon remained the highest compositional element found in CDs (99.05 atomic %). The abscissa axis of the EDS is considered the ionization energy pathway while the ordinate axis indicates the counts per second of the CDs intensity [55]. The EDS spectrums are plots of X-rays received for each energy level indicated.…”

Section: Energy Dispersive Spectroscopy (Eds)mentioning

confidence: 99%

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Eco-Friendly Sustainable Fluorescent Carbon Dots for the Adsorption of Heavy Metal Ions in Aqueous Environment

et al. 2020

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The materials and substances required for sustainable water treatment by adsorption technique, are still being researched widely by distinguished classes of researchers. Thus, the need to synthesize substances that can effectively clean up pollutants from the environment cannot be overemphasized. So far, materials in bulk forms that are rich in carbon, such as biochar and varieties of activated carbon have been used for various adsorptive purposes. The use of bulk materials for such purposes are not efficient due to minimal surface areas available for adsorption. This study explores the adsorption task at nano dimension using carbon dots (CDs) from tapioca. The properties of carbon structure and its influence on the adsorptive efficacy of carbon nanoparticles were investigated by energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), high resolution transmission electron microscopy (HrTEM), and atomic force microscopy (AFM). The results implied carbon present in CDs are good adsorbents for effective adsorption of heavy metal ions (lead) with removal efficiency of 80.6% in aqueous environment. The adsorption process as explored by both Langmuir and Freundlich isotherms have proven favorability of the adsorption process. Langmuir form two and three have correlation coefficients R2 at 0.9922 and 0.9912, respectively. The Freundlich isotherm confirms CDs as having defined surface heterogeneity and the exponential distribution of active sites. The adsorption of lead unto CDs obeyed the second order kinetic model with coefficient of determination, R2 of 0.9668 and 0.9996 at an initial lead concentration of 20 mg/L and 100 mg/L, respectively. The findings validated the efficiency of CDs derived from tapioca as an excellent material for further utilization in the environmental fields of wastewater pollution detection and clean up, bio-imaging, and chemical sensing applications.

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“…The XRF analysis of the TWP shows that Ti, Ca, and Ce constitute only a few percent of the overall composition, which has been confirmed by the XRF results. The coupling of XRF and SEM-EDS techniques for the identification of the TWP gives the most important synergic effect [23,24]. X-ray analysis providing information about pigment enables one to discriminate between TWP components [25].…”

Section: Resultsmentioning

confidence: 99%

Toner Waste Powder (TWP) as a Filler for Polymer Blends (LDPE/HIPS) for Enhanced Electrical Conductivity

et al. 2019

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Rapid urbanization proportionally increases the waste products which force humankind to find a suitable waste management system. This study aims at identifying the possibility of using toner waste powder (TWP) as a filler for fabricating polymer composites for enhanced electrical conductivity of polymer blends. TWP was successfully incorporated into a polymer blend of low-density polyethylene/high impact polystyrene (LDPE/HIPS) at a high loading percentage of up to 20 wt %. Elemental analysis (SEM-EDS and XRF) showed that the main constituents of TWP are carbon and iron with traces of other metals such as Ca, Cs, Ti, Mn, Si. The electrical conductivity of LDPE/HIPS is significantly enhanced by loading the TWP into the polymer blend. The addition of TWP to LDPE/HIPS blend decreases the electrical resistivity of the LDPE/HIPS/TWP composite to ~2.9 × 107 Ohm.cm at 10 wt % of TWP, which is several orders of magnitude lower than that of the neat blend with maintaining the thermal stability of the polymer composite. The prepared polymer composite is lightweight and shows electrical conductivity, thus it can have potential applications in electronic materials and automotive industries.

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Physicochemical characterization of nanomaterials: polymorph, composition, wettability, and thermal stability

Cited by 75 publications

References 62 publications

Synthesis of monodisperse spherical AgNPs by ultrasound-intensified Lee-Meisel method, and quick evaluation via machine learning

Synthesis of monodisperse spherical AgNPs by ultrasound-intensified Lee-Meisel method, and quick evaluation via machine learning

Eco-Friendly Sustainable Fluorescent Carbon Dots for the Adsorption of Heavy Metal Ions in Aqueous Environment

Toner Waste Powder (TWP) as a Filler for Polymer Blends (LDPE/HIPS) for Enhanced Electrical Conductivity

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