A review on alkaline earth metal titanates for applications in photocatalytic water purification

Solís, Rafael R.; Bedia, Jorge; Rodrı́guez, Juan J.; Belver, Carolina

doi:10.1016/j.cej.2020.128110

Cited by 52 publications

(17 citation statements)

References 152 publications

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“…Specially, the combination of solvent, temperature, and pressure makes the resulting products stabilize and lowers the existence of unwanted impurities. [ 91 ]…”

Section: Synthesis Methods Of Titanatesmentioning

confidence: 99%

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Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

Wang

Zhang

2021

Adv Funct Materials

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Global warming, energy deficiency, and environmental deterioration triggered by burning fossil fuels, may severely impair economic development and human life and health. Green solar power, mechanical energy, and temperature fluctuation heat energy abound in nature and are readily accessible. Thanks to various appealing characteristics, titanates are universally employed to harvest these sustainable energy sources to produce renewable fuels through photocatalysis, piezocatalysis, and pyrocatalysis, alleviating above serious issues. In this review, the research progress in energy catalysis driven by solar light, mechanical stress, and temperature fluctuation over titanates is comprehensively described. It starts with the classification and introduction of diverse titanates. Next, the main methods for preparing titanates are introduced. Highlighted are titanates acting as cocatalysts, photocatalysts, piezocatalysts, and pyrocatalysts to participate in water splitting reaction for H 2 evolution and atmospheric CO 2 reduction conversion into CO or hydrocarbons. In particular, the material modification strategies for improving photocatalytic performance are discussed. Finally, the rosy prospects of the future development of energy catalysis application for titanates are looked into.

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“…Specially, the combination of solvent, temperature, and pressure makes the resulting products stabilize and lowers the existence of unwanted impurities. [ 91 ]…”

Section: Synthesis Methods Of Titanatesmentioning

confidence: 99%

“…Finally, the obtained gel should be sintered or dried to remove moisture and organic components to acquire titanates. [ 91 ]…”

Section: Synthesis Methods Of Titanatesmentioning

confidence: 99%

Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

Wang

Zhang

2021

Adv Funct Materials

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“…This preservation of purification efficiency during long-term operation is due to a high degree of ordering of structural properties of nanoparticles, as well as a high specific surface area, which contributes to the absorption processes with the subsequent formation of complexes. To evaluate the effectiveness of the synthesized nanoparticles as a basis for catalysts in comparison with commercial analogs, a comparative experiment on the purification of aqueous media from manganese and arsenic using nanostructured ceramics CaTiO3 [31,32] and CuO nanoparticles (CuO NPs) [33,34] was performed. The choice of these types of structures for comparison is due to the fact that they are used as the basis of To evaluate the effectiveness of the synthesized nanoparticles as a basis for catalysts in comparison with commercial analogs, a comparative experiment on the purification of aqueous media from manganese and arsenic using nanostructured ceramics CaTiO 3 [31,32] and CuO nanoparticles (CuO NPs) [33,34] was performed.…”

Section: Study Of the Absorption Efficiency And Catalytic Properties Of Nife2o4 Nanoparticlesmentioning

confidence: 99%

“…To evaluate the effectiveness of the synthesized nanoparticles as a basis for catalysts in comparison with commercial analogs, a comparative experiment on the purification of aqueous media from manganese and arsenic using nanostructured ceramics CaTiO3 [31,32] and CuO nanoparticles (CuO NPs) [33,34] was performed. The choice of these types of structures for comparison is due to the fact that they are used as the basis of To evaluate the effectiveness of the synthesized nanoparticles as a basis for catalysts in comparison with commercial analogs, a comparative experiment on the purification of aqueous media from manganese and arsenic using nanostructured ceramics CaTiO 3 [31,32] and CuO nanoparticles (CuO NPs) [33,34] was performed. The choice of these types of structures for comparison is due to the fact that they are used as the basis of most catalysts for the purification of aqueous media from various types of pollutants, including heavy metals.…”

Section: Study Of the Absorption Efficiency And Catalytic Properties Of Nife2o4 Nanoparticlesmentioning

confidence: 99%

A Study on the Applicability of NiFe2O4 Nanoparticles as the Basis of Catalysts for the Purification of Aqueous Media from Pollutants

et al. 2021

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The aim of this work is to evaluate the application of NiFe2O4 nanoparticles with spinel structures as the basis of catalysts for the purification of aqueous media from pollutants such as manganese and arsenic. The interest in these catalysts is due to their ease of production and high absorption efficiency, which, together with their magnetic properties, allow the use of nanoparticles for a long time. The sol–gel method, followed by thermal annealing of the samples at different temperatures, was proposed as a method for the synthesis of spinel nanoparticles. The choice of the annealing temperature range of 200–1000 °C is caused by the possibility of estimating changes in the structural properties and the degree of nanoparticles crystallinity. During the study of structural changes in nanoparticles depending on the annealing temperature, it was found that in the temperature range of 200–800 °C, there is an ordering of structural parameters, while for samples obtained at annealing temperatures above 800 °C, there is a partial disorder caused by the agglomeration of nanoparticles with a subsequent increase in their size. According to the results of the studies on the purification of aqueous media from pollutants, it was found that the greatest absorption efficiency belongs to nanoparticles annealed at 500–700 °C, with the purification efficiency of 70–85%, depending on the type of pollutant. The results obtained from the use of nanoparticles as catalysts for the purification of aqueous media show great prospects for their further application on an industrial scale.

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“…Studies have shown that photocatalytic degradation is an effective and environmentally friendly water purification method, and it has great application potential in the treatment of toxic dye wastewater. 1,2 Considering the safety of use and possible secondary pollution, non-metallic photocatalysts have attracted more and more attention in water treatment and have potential application prospects. 3,4 …”

Section: Introductionmentioning

confidence: 99%

Tubular g-C₃N₄/carbon framework for high-efficiency photocatalytic degradation of methylene blue

Zang

Shen

et al. 2021

RSC Adv.

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A review on alkaline earth metal titanates for applications in photocatalytic water purification

Cited by 52 publications

References 152 publications

Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

A Study on the Applicability of NiFe2O4 Nanoparticles as the Basis of Catalysts for the Purification of Aqueous Media from Pollutants

Tubular g-C₃N₄/carbon framework for high-efficiency photocatalytic degradation of methylene blue

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A review on alkaline earth metal titanates for applications in photocatalytic water purification

Cited by 52 publications

References 152 publications

Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

A Study on the Applicability of NiFe2O4 Nanoparticles as the Basis of Catalysts for the Purification of Aqueous Media from Pollutants

Tubular g-C3N4/carbon framework for high-efficiency photocatalytic degradation of methylene blue

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Tubular g-C₃N₄/carbon framework for high-efficiency photocatalytic degradation of methylene blue