Unravelling the effect of crystal dislocation density and microstrain of titanium dioxide nanoparticles on tetracycline removal performance

John, Kingsley Igenepo; Adenle, Abraham Abdul; Adeleye, Aderemi Timothy; Onyia, Ifeoma Pearl; Amune-Matthews, Christianah; Omorogie, Martins O.

doi:10.1016/j.cplett.2021.138725

Cited by 31 publications

(30 citation statements)

References 27 publications

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“…The data points reveal a certain degree of microstrain, which is more significant in TiO 2 -anatase as compared to TiO 2 -rutile, ⟨ε 2 ⟩ = 1.02% and ⟨ε 2 ⟩ = 0.53%, respectively. The effect of microstrains on the properties of TiO 2 particles can influence the catalytic and photocatalytic performance and determines their adsorption capacity …”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Rutile TiO₂ Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats

et al. 2023

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The widespread use of titanium dioxide (TiO 2 ) has raised concerns about potential health risks associated with its cytotoxicity in the cardiovascular system. To evaluate the cytotoxicity of TiO 2 particles, the H9c2 rat cardiomyoblasts were used as a biological model, and their toxicological susceptibility to TiO 2 -anatase and TiO 2 -rutile particles was studied in vitro. The study examined dose and time exposure responses. The cell viability was evaluated based on metabolic inhibition and membrane integrity loss. The results revealed that both TiO 2 -anatase and TiO 2 -rutile particles induced similar levels of cytotoxicity at the inhibition concentrations IC 25 (1.4−4.4 μg/cm 2 ) and IC 50 (7.2−9.3 μg/cm 2 ). However, at more significant concentrations, TiO 2 -rutile appeared to be more cytotoxic than TiO 2 -anatase at 24 h. The study found that the TiO 2 particles induced apoptosis events, but necrosis was not observed at any of the concentrations of particles used. The study considered the effects of microstructural properties, crystalline phase, and particle size in determining the capability of TiO 2 particles to induce cytotoxicity in H9c2 cardiomyoblasts. The microstress in TiO 2 particles was assessed using powder X-ray diffraction through Williamson−Hall and Warren−Averbach analysis. The analysis estimated the apparent crystallite domain and microstrain of TiO 2 -anatase to be 29 nm (ε = 1.03%) and TiO 2 -rutile to be 21 nm (ε = 0.53%), respectively. Raman spectroscopy, N 2 adsorption isotherms, and dynamic light scattering were used to identify the presence of pure crystalline phases (>99.9%), comparative surface areas (10 m 2 /g), and ζ-potential values (−24 mV). The difference in the properties of TiO 2 particles made it difficult to attribute the cytotoxicity solely to one variable.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Rutile TiO₂ Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats

et al. 2023

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“…The difference in the Na/Ti atomic ratio of the prepared materials (HTNT&NaTNT)can be attributed to difference in preparation step and specifically ion-exchange process with HNO 3 solution causes the hydrogenation which led to the formation of HTNT as compared NaTNT, this type of hydrogenation through ion-exchange confirms a complete hydrogenation reaction [ 38 , 50 ]. Moreover, the analysis of the XRD peaks revealed a reduction in the intensity ratio of Anatase/Rutile ( I A / I R ) from 2.00 in HTNT to 0.74 in the ion-exchange NaTNT, thus establishing the formation of rutile in the samples [ 4 , 8 ]. The plausible routes used in this study for the preparation of titanate nanotubes (TNTs) are represented in Eqs.…”

Section: Resultsmentioning

confidence: 99%

“…

Where C O is the initial dye concentration, C t is the final dye concentration at the time, t. The rate constant (k) of degradation was evaluated using the pseudo-first order kinetic rate law [ 4 , 8 ] as expressed in Eq. (2) .…”

Section: Methodsmentioning

confidence: 99%

“…The release of organic pollutants and other carcinogenic petrochemicals have been a great concern among chemical engineers and environmentalists [ 5 , 7 ]. Pollutants released from industrial wastewater are a crucial environmental concern with grave consequences on humans, environment and economic prospects [ 5 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, there is need to develop environmental remediation technology to eliminate these hazardous materials [ 9 , 10 , 13 , 14 ]. Different methods such as heterogeneous catalytic oxidation with H 2 O 2 [ 15 ], heterogeneous photocatalytic process [ 16 ], electrochemical oxidation [ 17 ], Fenton/photo-Fenton oxidation [ 16 , 17 ], ozonation [ 18 ], biodegradation [ 19 ], chlorination [ 20 , 21 ], combined flocculation/coagulation [ 22 ], adsorption [ 4 , 8 ], reverse osmosis [ 23 ] and UV/H 2 O 2 treatment can be used to obliterate organic pollutants [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

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The contemporary production of carbon materials heavily relies on fossil fuels, contributing significantly to the greenhouse effect. Biomass is a carbon‐neutral resource whose organic carbon is formed from atmospheric CO2. Employing biomass as a precursor for synthetic carbon materials can fix atmospheric CO2 into solid materials, achieving negative carbon emissions. Hydrothermal carbonization (HTC) presents an attractive method for converting biomass into carbon materials, by which biomass can be transformed into materials with favorable properties in a distinct hydrothermal environment, and these carbon materials have made extensive progress in many fields. However, the HTC of biomass is a complex and interdisciplinary problem, involving simultaneously the physical properties of the underlying biomass and sub/supercritical water, the chemical mechanisms of hydrothermal synthesis, diverse applications of resulting carbon materials, and the sustainability of the entire technological routes. This review starts with the analysis of biomass composition and distinctive characteristics of the hydrothermal environment. Then, the factors influencing the HTC of biomass, the reaction mechanism, and the properties of resulting carbon materials are discussed in depth, especially the different formation mechanisms of primary and secondary hydrochars. Furthermore, the application and sustainability of biomass‐derived carbon materials are summarized, and some insights into future directions are provided.This article is protected by copyright. All rights reserved

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Unravelling the effect of crystal dislocation density and microstrain of titanium dioxide nanoparticles on tetracycline removal performance

Cited by 31 publications

References 27 publications

Synthesis and Characterization of Rutile TiO₂ Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats

Synthesis and Characterization of Rutile TiO₂ Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats

Photocatalytic remediation of methylene blue using hydrothermally synthesized H-Titania and Na-Titania nanotubes

Towards Negative Emissions: Hydrothermal Carbonization of Biomass for Sustainable Carbon Materials

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Unravelling the effect of crystal dislocation density and microstrain of titanium dioxide nanoparticles on tetracycline removal performance

Cited by 31 publications

References 27 publications

Synthesis and Characterization of Rutile TiO2 Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats

Synthesis and Characterization of Rutile TiO2 Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats

Photocatalytic remediation of methylene blue using hydrothermally synthesized H-Titania and Na-Titania nanotubes

Towards Negative Emissions: Hydrothermal Carbonization of Biomass for Sustainable Carbon Materials

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Product

Resources

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Synthesis and Characterization of Rutile TiO₂ Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats

Synthesis and Characterization of Rutile TiO₂ Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats