Visible light–driven perovskite-based photocatalyst for wastewater treatment

Yahya, Norrul Azmi; Nasir, Atikah Mohd; Daub, Nur Atiqah; Aziz, Farhana; Aizat, Arif; Jaafar, Juhana; Lau, Woei Jye; Salleh, Wan Norharyati Wan; Ismail, Ahmad Fauzi; Aziz, Mustafa Kamal Abdul

doi:10.1016/b978-0-12-819051-7.00009-9

Cited by 5 publications

(4 citation statements)

References 181 publications

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“…ZnO nanoparticles were synthesised using the co-precipitation method [ 14 ]. The co-precipitation of the salts occurs by the addition of a precipitating agent, such as sodium hydroxide [ 15 ].…”

Section: Methodsmentioning

confidence: 99%

Conversion of Carbon Dioxide into Methanol Using Cu–Zn Nanostructured Materials as Catalysts

2022

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Nowadays, there is a growing awareness of the great environmental impact caused by the enormous amounts of carbon dioxide emitted. Several alternatives exist to solve this problem, and one of them is the hydrogenation of carbon dioxide into methanol by using nanomaterials as catalysts. The aim of this alternative is to produce a value-added chemical, such as methanol, which is a cheaply available feedstock. The development of improved materials for this conversion reaction and a deeper study of the existing ones are important for obtaining higher efficiencies in terms of yield, conversion, and methanol selectivity, in addition to allowing milder reaction conditions in terms of pressure and temperature. In this work, the performance of copper, zinc, and zinc oxide nanoparticles in supported and unsupported bimetallic systems is evaluated in order to establish a comparison among the different materials according to their efficiency. For that, a packed bed reactor operating with a continuous gas flow is used. The obtained results indicate that the use of bimetallic systems combined with porous supports, such as zeolite and activated carbon, is beneficial, thus improving the performance of unsupported materials by four times.

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Section: Methodsmentioning

confidence: 99%

Conversion of Carbon Dioxide into Methanol Using Cu–Zn Nanostructured Materials as Catalysts

2022

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“…Usually, at lower catalyst dosage, there are few active sites available for photodegradation, and at higher catalyst loadings, there are agglomeration, high turbidity, and scattering effects which lower the degradation efficiency in photocatalysis (Yahya et al, 2018;Yahya et al, 2020). Behzadifard et al (2018) investigated the effect of CuO (10 wt%) SmFeO 3 composites for degradation of 10 mg/L rhodamine dye.…”

Section: Effect Of Catalyst Loadingsmentioning

confidence: 99%

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

Nkwachukwu

Arotiba

2021

Front. Chem.

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Meeting the global challenge of water availability necessitates diversification from traditional water treatment methods to other complementary methods, such as photocatalysis and photoelectrocatalysis (PEC), for a more robust solution. Materials play very important roles in the development of these newer methods. Thus, the quest and applications of a myriad of materials are ongoing areas of water research. Perovskite and perovskite-related materials, which have been largely explored in the energy sectors, are potential materials in water treatment technologies. In this review, attention is paid to the recent progress in the application of perovskite materials in photocatalytic and photoelectrocatalytic degradation of organic pollutants in water. Water treatment applications of lanthanum, ferrite, titanate, and tantalum (and others)-based perovskites are discussed. The chemical nature and different synthetic routes of perovskites or perovskite composites are presented as fundamental to applications.

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“…In a photocatalytic process, a photocatalyst uses photon as a source of energy to enhance chemical reaction rate without being involved in the reaction. TiO 2 was discovered as a photocatalyst in 1972 during water splitting in a photo-electrochemical reaction [18]. Under light irradiation on a photocatalyst, the electrons absorb energy from the valence band (VB) and excited to the conduction band (CB).…”

Section: Photocatalytic Pathwaymentioning

confidence: 99%

Perovskite Based Photocatalyst for Wastewater Treatment: Green Approach of Environmental Sustainability

Das¹,

Mahata²,

Adak³

2021

AJBES

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Persistent organic substances in wastewater are creating serious problems to the living world as well as to the environment, thereby creating huge detrimental impact on the ecosystem. In view of the grave situation, removal of the persistent organic substances from wastewater effluent holds a great promise to balance the ecosystem and to sustain societal impact value. In this respect, perovskite based photocatalysts have achieved remarkable attention to the scientific community due to their unique structural features and flexibility of composition. Again, surface polarization and electric dipole-dipole interaction in the perovskite material make them attractive for photocatalytic application. This review paper summarized the photocatalytic activity of perovskite materials and their modification to enhance catalytic activity for wastewater treatment. The modification in perovskite has been done to reduce bandgap energy for enhanced visible light activity, separation of charge carriers for their long lifetime, and fast photocatalytic reaction. The recent investigation of ABO 3 type perovskite, layered perovskite, and halide type of perovskite photocatalysts have been discussed detailly. The modification of corresponding perovskites by doped and formation of heterojunction is investigated carefully. The formation and identification of reactive oxygen species (ROS) and their degradation mechanism by trapping experiment and ESR technique has been summarized here. Finally, large scale with energy and environmental related research should be processed for a permanent solution of wastewater problem.

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Visible light–driven perovskite-based photocatalyst for wastewater treatment

Cited by 5 publications

References 181 publications

Conversion of Carbon Dioxide into Methanol Using Cu–Zn Nanostructured Materials as Catalysts

Conversion of Carbon Dioxide into Methanol Using Cu–Zn Nanostructured Materials as Catalysts

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

Perovskite Based Photocatalyst for Wastewater Treatment: Green Approach of Environmental Sustainability

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