A comparative study of the incorporation of TiO2 into MCM-41 nanostructure via different approaches and its effect on the photocatalytic degradation of methylene blue and CO oxidation

Hassan, Hassan M.A.; Mohamed, Shaimaa K.; Ibrahim, Ahmad; Betiha, Mohamed A.; El-Sharkawy, E.A.; Mousa, Ahmed A.

doi:10.1007/s11144-016-1124-4

Cited by 24 publications

(10 citation statements)

References 28 publications

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“…Further investigation has been carried out to improve the efficiency of the AD by optimizing the parameters for enhancing microbial existence during the digestion process and improving the hydrolysis process [26,81]. Nanomaterials in this regard would be a candidate to replace many other conventional materials/processes for more efficient sludge biodegradability [31,82]. The usage of various NPs in AD is the growing trend for sustainable and feasible application of methane production [32,83].…”

Section: Future Perspective On Ad Enhancementmentioning

confidence: 99%

“…Hence, proper research is still necessary to estimate the syntrophic conversion of the various substrate with NPs for various kinds of anaerobic digesters. A more thorough investigation is also important to validate the metal fractions and bioavailability in anaerobic circumstances [82,83]. Furthermore, additional exploration of the synergistic effects of multi-nanoparticles on metal specifications, particularly the production of metal sulfides in sulfite-rich environments, is required.…”

Section: Future Perspective On Ad Enhancementmentioning

confidence: 99%

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Recent Advances and Perspectives of Nanotechnology in Anaerobic Digestion: A New Paradigm towards Sludge Biodegradability

Banu

Sharmila²

2022

Sustainability

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Anaerobic digestion (AD) is the strategy of producing environmentally sustainable bioenergy from waste-activated sludge (WAS), but its efficiency was hindered by low biodegradability. Hence, the usage of nanomaterials was found to be essential in enhancing the degradability of sludge due to its nanostructure with specific physiochemical properties. The application of nanomaterials in sludge digestion was thoroughly reviewed. This review focused on the impact of nanomaterials such as metallic nanoparticles, metal oxide nanoparticles, carbon-based nanomaterials, and nanocomposite materials in AD enhancement, along with the pros and cons. Most of the studies detailed that the addition of an adequate dosage of nanomaterial has a good effect on microbial activity. The environmental and economic impact of the AD enhancement process is also detailed, but there are still many existing challenges when it comes to designing an efficient, cost-effective AD digester. Hence, proper investigation is highly necessary to assess the potency of utilizing the nanomaterials in enhancing AD under various conditions.

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Section: Future Perspective On Ad Enhancementmentioning

confidence: 99%

Section: Future Perspective On Ad Enhancementmentioning

confidence: 99%

Recent Advances and Perspectives of Nanotechnology in Anaerobic Digestion: A New Paradigm towards Sludge Biodegradability

Banu

Sharmila²

2022

Sustainability

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“…The bands at 1070 and 430 cm −1 correspond to the Si−O−Si of the SNs and SiO 2 produced by the hydrolysis polycondensation of TEOS. Also, the band at 974 cm −1 is ascribed to the stretching vibrations of the Si−O−Ti bonds, 27 indicating the hydrolytic cocondensation of TEOS, PFDTES, and TNs.…”

Section: Chemical Compositionsmentioning

confidence: 99%

Photocatalytic Superamphiphobic Coatings and the Effect of Surface Microstructures on Superamphiphobicity

Liu

Xia

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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In recent years, superamphiphobic coatings have been widely used in industrial transportation and environmental treatments because of their unique liquid repellency. In this study, WO3-TiO2 nanorods/SiO2 were used as the constructor of surface microstructures, and 1H,1H,2H,2H-perfluorodecyltriethoxysilane was used as the provider of low surface energy, and a photocatalytic superamphiphobic coating (FTS coating) was prepared. The microstructure and chemical composition of the coating was characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The coating exhibited excellent photocatalytic activity toward degradation methyl red and nitric oxide (NO), and the degradation efficiency to NO reached 47.8%. Also, the advanced contact angle and the hysteresis angle of water, glycol, glycerol, and olive oil was used to evaluate the superamphiphobicity. After 7 days of ultraviolet (UV) aging, five cycles of airbrush flushing and 48 h of immersion in acid, salt, and alkali solutions, the FTS coating still exhibits excellent amphiphobicity, which lays a foundation for its large-scale applications in the concrete exterior wall. The surface microstructure and the formation of air pockets are a prerequisite for superamphiphobicity, which promotes the liquid on the coating surface into the Cassie-Baxter state. Furthermore, the formation of air pockets is closely related to the gas adsorption capacity and the specific surface area (S BET) of the surface microstructure on the coating surface. The coatings with different S BET constructed and the advanced contact angle were measured. The influence of air pockets on the superamphiphobicity of coatings was studied in combination with the optical microscope. The understanding that S BET further influences superamphiphobicity by affecting the surface air pockets is proposed.

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“…The severe aggregation not only lowers the photocatalytic desulfurization activity, but also reduces the number of active sites on the surface of TiO 2 . In addition, bare TiO 2 nanoparticles require a high cost for filtration recovery and might cause secondary pollution if deposed randomly [95] . Therefore, researchers began to use carrier materials with high surface area to fix and disperse TiO 2 nanoparticles.…”

Section: Solutions To Podsmentioning

confidence: 99%

“…In addition, bare TiO 2 nanoparticles require a high cost for filtration recovery and might cause secondary pollution if deposed randomly. [95] Therefore, researchers began to use carrier materials with high surface area to fix and disperse TiO 2 nanoparticles. Currently, carbon materials (carbon nanotubes, [47] graphene, [86] bamboo charcoal [96] ), porous silicon dioxide (MCM-41), [51] porous glass, [97] and metal-organic frameworks (MOFs) [98] have been reported as the supporting matrix for PODS.…”

Section: Structure Modificationsmentioning

confidence: 99%

Desulfurization through Photocatalytic Oxidation: A Critical Review

et al. 2020

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Fuel oil, the most important strategic resource, has been widely used in industrial applications. However, the sulfur‐containing compounds in fuel oil also present humanity with huge environmental issues and health concerns due to the hazardous combustion waste. To address this problem, the low vulcanization of fuel production technology has been intensively explored. Compared with traditional hydrodesulfurization technology, the newly emerged photocatalytic desulfurization has the advantages of milder operating conditions, lower energy consumption, and higher efficiency, holding great prospect to achieve deep desulfurization. Though great efforts have been made, the desulfurization catalysts still suffer from inferior light absorption, fast recombination of photocarriers, and poor structure modification. This Review summarizes recent development of photocatalytic desulfurization, including the desulfurization principle, current desulfurization challenges, and corresponding solutions. Particularly, the roles of defect engineering, hybrid coupling, and structure modifications in the enhancement of photocatalytic performance are emphasized. In addition, the photocatalytic desulfurization mechanism is also introduced with the .OH and .O2− radicals as main active species. Finally, some perspectives on the photocatalytic desulfurization are provided, which can further optimize the desulfurization efficiency and guide future photocatalyst design.

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A comparative study of the incorporation of TiO2 into MCM-41 nanostructure via different approaches and its effect on the photocatalytic degradation of methylene blue and CO oxidation

Cited by 24 publications

References 28 publications

Recent Advances and Perspectives of Nanotechnology in Anaerobic Digestion: A New Paradigm towards Sludge Biodegradability

Recent Advances and Perspectives of Nanotechnology in Anaerobic Digestion: A New Paradigm towards Sludge Biodegradability

Photocatalytic Superamphiphobic Coatings and the Effect of Surface Microstructures on Superamphiphobicity

Desulfurization through Photocatalytic Oxidation: A Critical Review

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