Enhanced photoluminescence properties of Gd (x-1) Sr x O: CdO nanocores and their study of optical, structural, and morphological characteristics

Adimule, Vinayak; Nandi, Santosh S.; Yallur, Basappa C.; Bhowmik, Debdas; Jagadeesha, Adarsha Haramballi

doi:10.1016/j.mtchem.2021.100438

Cited by 65 publications

(25 citation statements)

References 59 publications

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“…These are all conducive to the adsorption of CB and the desorption of inorganic chlorine . As shown in Figure c,d, the diffraction peaks at 135.1, 133.4, 458.2, and 457.8 eV in Sr 3d and Ti 2P spectra are ascribed to Sr 2+ , Sr + , Ti 4+ , and Ti 3+ , respectively. − The strong electron transfer in the Ti-Ce-Sr system can be confirmed by comparing the valence changes of Sr and Ti . The detailed electron transfer path is exhibited in Scheme S1.…”

Section: Resultsmentioning

confidence: 81%

Biotemplate Fabrication of Hollow Tubular Ce_xSr_1–xTiO₃ with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism

Sun

Bai

et al. 2022

Environ. Sci. Technol.

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Developing economic and applicable catalysts with elegant chlorine resistance and organic byproduct inhibition capability is of great significance for chlorinated volatile organic compounds (Cl-VOCs) eco-friendly purification. Here, ternary Ce x Sr1–x TiO3 catalysts with tunable surface acidity and oxygen species mobility were creatively fabricated using the hollow tubular-structured fruit hair of Platanus (FHP; a widespread greenery waste) as the scaffolding biotemplate. It is shown that the oxygen vacancy (Ov) triggered by the presence of Ce can optimize the synergy between the Lewis acid sites (LAS) and Brønsted acid sites (BAS). High concentration of Ov and BAS promotes the C–Cl cleavage of chlorobenzene (CB) and accelerates the desorption of Cl• radicals as inorganic chlorine. Simultaneously, the strong electron transfer within Ti-Ce-Sr linkage increases the acidity of LAS, resulting in the superior reducibility of Ce0.4Sr0.6TiO3 and facilitating the deep oxidation of dechlorination intermediates. Additionally, the spatial confinement of the tubular structure remarkably accelerates the CB flow rate and reduces the residence time of byproducts over the prepared catalysts. Owing to these, CB can be efficiently destructed over Ce0.4Sr0.6TiO3 with selectivity of CO2 and inorganic chlorine dramatically enhanced, respectively, approximately 16 and 21 times at 275 °C compared to those of pure SrTiO3. The present work provides a feasible and promising strategy for engineering efficient catalysts for heterogeneous thermocatalytic reactions for industrial-scale Cl-CVOC destruction.

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Section: Resultsmentioning

confidence: 81%

Biotemplate Fabrication of Hollow Tubular Ce_xSr_1–xTiO₃ with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism

Sun

Bai

et al. 2022

Environ. Sci. Technol.

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“…This is due to the electron transition from the valence band (VB) to the conduction band (CB) (O2p–Zn3d) [ 44 ]. The observed variation in the absorbance spectra is related to defects in features such as crystallite size, grain boundaries, and oxygen vacancies [ 45 ]. The band gap was calculated using the absorbance data, the Kubelka–Munk function, and Tauc’s relation ( Figure 3 b) [ 46 ].…”

Section: Resultsmentioning

confidence: 99%

Unraveling the Complex Interactions: Machine Learning Approaches to Predict Bacterial Survival against ZnO and Lanthanum-Doped ZnO Nanoparticles

Navarro-López,

Perfecto-Avalos,

Zavala

et al. 2024

Antibiotics

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The rise in antibiotic-resistant bacteria is a global health challenge. Due to their unique properties, metal oxide nanoparticles show promise in addressing this issue. However, optimizing these properties requires a deep understanding of complex interactions. This study incorporated data-driven machine learning to predict bacterial survival against lanthanum-doped ZnO nanoparticles. The effect of incorporation of lanthanum ions on ZnO was analyzed. Even with high lanthanum concentration, no significant variations in structural, morphological, and optical properties were observed. The antibacterial activity of La-doped ZnO nanoparticles against Gram-positive and Gram-negative bacteria was qualitatively and quantitatively evaluated. Nanoparticles induce 60%, 95%, and 55% bacterial death against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus, respectively. Algorithms such as Multilayer Perceptron, K-Nearest Neighbors, Gradient Boosting, and Extremely Random Trees were used to predict the bacterial survival percentage. Extremely Random Trees performed the best among these models with 95.08% accuracy. A feature relevance analysis extracted the most significant attributes to predict the bacterial survival percentage. Lanthanum content and particle size were irrelevant, despite what can be assumed. This approach offers a promising avenue for developing effective and tailored strategies to reduce the time and cost of developing antimicrobial nanoparticles.

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“…About imperative physicochemical features of CISAC are specified in Table 2. The CISAC samples were determined through a typical test process for moisture in AC [29]. The adsorptive power of water gratified carbon has no consequence; it mitigates C, which is essential for using the additional weight of carbon in the treatment procedure.…”

Section: Characterization Of Adsorbentmentioning

confidence: 99%

Optimization, Statistical and Adsorption Analysis of Cr(VI) using Corn Industry Sludge: Kinetic and Isotherm Studies

Kerur

Hanagadakar

Nandi

et al. 2022

Preprint

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A novel, cost-effective activated carbon was prepared from local corn industry waste sludge to treat chromium (VI) ions from an aqueous solution. Adsorption is one of the promising techniques for treating chromium. The adsorption efficiency depends on temperature, pH, metal ion concentrations, contact time, and adsorbent dose. Activation increase the adsorbent sites on the surface of the adsorbent, and SEM micrographs indicate the adsorption sites before and after adsorption. IR spectrum of FT-IR spectrophotometer was used for analysis Investigation of equilibrium adsorption isotherm data reveals suitability of corn industry waste for treating chromium (VI) ions. The adsorption isotherm and kinetics of chromium (VI) adsorption indicate agreement of the experimental data to Frendulich isotherm and pseudo-second-order model and chemisorption as the reason for Cr(VI) removal. The corn industry waste is thermally activated by heating in a controlled atmosphere at 500° C. Kinetic data studies elucidated that adsorption tracks a pseudo-second-order kinetic model. The maximum adsorption capacity and adsorption efficiency of chromium (VI) were found to be 6.80 mg/g at were pH of 4 with a contact time of 150 min and 91.43% using 1.5 g of adsorbent. The outcomes of corn industry sludge as the advantage of low-cost material and an effective adsorbent for Cr (VI) removal. The statistical analysis of adsorption was studied through response surface methodology (RSM). The experimental and theoretical values for percentage adsorption of Cr were observed as 92.91% and 91.43%, respectively. The experimental results closely agree with the central composite design.

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Enhanced photoluminescence properties of Gd (x-1) Sr x O: CdO nanocores and their study of optical, structural, and morphological characteristics

Cited by 65 publications

References 59 publications

Biotemplate Fabrication of Hollow Tubular Ce_xSr_1–xTiO₃ with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism

Biotemplate Fabrication of Hollow Tubular Ce_xSr_1–xTiO₃ with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism

Unraveling the Complex Interactions: Machine Learning Approaches to Predict Bacterial Survival against ZnO and Lanthanum-Doped ZnO Nanoparticles

Optimization, Statistical and Adsorption Analysis of Cr(VI) using Corn Industry Sludge: Kinetic and Isotherm Studies

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Enhanced photoluminescence properties of Gd (x-1) Sr x O: CdO nanocores and their study of optical, structural, and morphological characteristics

Cited by 65 publications

References 59 publications

Biotemplate Fabrication of Hollow Tubular CexSr1–xTiO3 with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism

Biotemplate Fabrication of Hollow Tubular CexSr1–xTiO3 with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism

Unraveling the Complex Interactions: Machine Learning Approaches to Predict Bacterial Survival against ZnO and Lanthanum-Doped ZnO Nanoparticles

Optimization, Statistical and Adsorption Analysis of Cr(VI) using Corn Industry Sludge: Kinetic and Isotherm Studies

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Product

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Biotemplate Fabrication of Hollow Tubular Ce_xSr_1–xTiO₃ with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism

Biotemplate Fabrication of Hollow Tubular Ce_xSr_1–xTiO₃ with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism