TiO2–Hydroxyapatite Composite as a New Support of Highly Active and Sintering-Resistant Gold Nanocatalysts for Catalytic Oxidation of CO and Photocatalytic Degradation of Methylene Blue

Guo, Jiuli; Feng, Dong; Zhong, Siyuan; Zhu, Baolin; Huang, Wei‐Ping; Zhang, Shoumin

doi:10.1007/s10562-017-2245-8

Cited by 19 publications

(5 citation statements)

References 47 publications

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“…The analysis shows round bright patches (holes) distributed randomly in all the particles (Figure b) mostly of size between 11 and 41 nm (Figure 9e), explaining the large surface area obtained from BET analysis. However, even though many studies have reported the presence of sphere‐like nanopores in synthetic apatite, in our case the nanopores are studied in a natural apatite as well as for lamellar aspect. The metal deposition on the particle surface was in a well‐defined nanosphere shape (Figure c) and the Pd nanoparticles were distributed with a mean size of 11.81 nm, as shown in Figure f.…”

Section: Resultssupporting

confidence: 56%

Palladium nanoparticles supported on mesoporous natural phosphate: An efficient recyclable catalyst for nitroarene reduction

Mekkaoui

Jennane

Aberkouks³

et al. 2019

Applied Organom Chemis

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We report the preparation of palladium nanoparticles supported on mesoporous natural phosphate (Pd@NP) using a wetness impregnation method. The prepared catalyst was characterized using various techniques. Furthermore, the reduction and preparation of the palladium nanoparticles was followed using UV–visible spectra. Based on the Scherrer equation, the crystallite size of the as‐synthesized palladium nanoparticles was 10.88 nm. The performance of the synthesized catalyst was investigated in the reduction of 4‐nitrophenol as a model substrate to 4‐aminophenol using NaBH4 as a hydrogen source. Moreover, catalytic reduction of various nitroarenes was studied and monitored using UV–visible spectroscopy and gas chromatography. The Pd@NP catalyst showed a high activity for the selected reaction and could be recycled.

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Section: Resultssupporting

confidence: 56%

Palladium nanoparticles supported on mesoporous natural phosphate: An efficient recyclable catalyst for nitroarene reduction

Mekkaoui

Jennane

Aberkouks³

et al. 2019

Applied Organom Chemis

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“…According to XRD analysis, the carbon material exhibits crystalline features closely related to graphite; however, the weak reflection suggestes that the material is most likely contained in an amorphous phase. Based on the XRD patterns, the results are reasonably consistent with those found in previous studies on graphite-based carbon material [32]. A camera image of the carbon material illuminated with UV light for three minutes is shown in Figure 2a.…”

Section: Materials From Carica Papaya Fruit Juicesupporting

confidence: 89%

Highly Active Carbon Material Derived from Carica papaya Fruit Juice: Access to Efficient Photocatalytic Degradation of Methylene Blue in Aqueous Solution under the Illumination of Ultraviolet Light

et al. 2023

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Herein, we describe a cost-effective, efficient, sustainable, and environmentally friendly pyrolytic method for the synthesis of highly active carbon materials from Carica papaya fruit juice for the photodegradation of various pollutants, such as methylene blue (MB), in aqueous solutions using ultraviolet (UV) light. Various analytical techniques were used to examine the morphology, crystal quality, functional group chemistry, particle size distribution, and optical properties of the materials. For evaluating the performance of the newly prepared carbon material, various photocatalyst parameters were investigated, including initial dye concentration, catalyst dose, pH of dye solution, cyclic stability, and scavenger studies. The obtained findings attest that the optimal degradation efficiency of carbon material for high MB concentrations (2.3 × 10−5 M) is around 98.08%, whereas at low concentrations of MB (1.5 × 10−5 M) it reaches 99.67%. Degradation kinetics indicate that MB degrades in a first-order manner. Importantly, as the pH of the dye solution was adjusted to ~11, the degradation rate increased significantly. The scavenger study indicated that hydroxyl radicals were the predominant species involved in the degradation of MB. In addition, active surface site exposure and charge transfer were strongly associated with efficient MB degradation. On the basis of its performance, this newly developed carbon material may prove to be an excellent alternative and promising photocatalyst for wastewater treatment. Furthermore, the synthetic approach used to produce carbon material from Carica papaya fruit juice may prove useful for the development of a new generation of photoactive materials for environmentally friendly applications, as well as for the production of hydrogen from solar energy.

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“…The MB degradation rate using the carbon material obtained from yogurt is comparable or higher than that of many nanostructured materials reported in recent works. 78 The degradation efficiency using 15 mg of the carbon material is higher (99.7%) at low MB concentrations, as shown in Fig. 5e , while it is lower but still good (94.8%) at higher concentrations, as shown in Fig.…”

Section: Resultsmentioning

confidence: 81%

Facile synthesis of a luminescent carbon material from yogurt for the efficient photocatalytic degradation of methylene blue

et al. 2022

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TiO2–Hydroxyapatite Composite as a New Support of Highly Active and Sintering-Resistant Gold Nanocatalysts for Catalytic Oxidation of CO and Photocatalytic Degradation of Methylene Blue

Cited by 19 publications

References 47 publications

Palladium nanoparticles supported on mesoporous natural phosphate: An efficient recyclable catalyst for nitroarene reduction

Palladium nanoparticles supported on mesoporous natural phosphate: An efficient recyclable catalyst for nitroarene reduction

Highly Active Carbon Material Derived from Carica papaya Fruit Juice: Access to Efficient Photocatalytic Degradation of Methylene Blue in Aqueous Solution under the Illumination of Ultraviolet Light

Facile synthesis of a luminescent carbon material from yogurt for the efficient photocatalytic degradation of methylene blue

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