Recent advances in structural engineering of photocatalysts for environmental remediation

Noureen, Laila; Wang, Qian; Humayun, Muhammad; Shah, Waqas Ali; Xu, Qiyong; Wang, Xinwei

doi:10.1016/j.envres.2022.115084

Cited by 24 publications

(11 citation statements)

References 167 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Differences in the performance and efficiency of various photocatalysts are crucial in determining their suitability for various applications; thus, further research is needed to fully understand their potential. Photocatalysis can be used for/in the following: (i) removal of pharmaceutical residues from treated wastewater streams [16][17][18]; (ii) elimination of air pollutants [19,20]; (iii) in environmental remediation [21,22]; (iv) energy conversion [23][24][25]; (v) chemical synthesis [26,27]. Photocatalysis may also be involved in therapy and photodynamic treatment of cancer, sterilizing surgical instruments, and removal of unwanted fingerprints from sensitive electrical and optical components [28,29].…”

Section: Equationmentioning

confidence: 99%

Hydrogen Production Using Modern Photocatalysts

Wawrzyńczak,

Feliczak-Guzik

2024

Coatings

View full text Add to dashboard Cite

Fossil fuels play a powerful role in the global economy and are therefore referred to as strategic raw materials. However, their massive use around the world is associated with concerns about the sufficiency of energy sources for future generations. Currently, fossil fuel resources are heavily depleted, with limited supplies. According to forecasts, the demand for energy will constantly increase, so it is necessary to find a solution that reconciles the ever-increasing demand for energy with the need to protect the environment. The main solution to this problem is to acquire energy from renewable resources, especially in the direction of obtaining alternative substitutes for transportation fuels. One of the main alternative fuels that can replace existing fossil fuels is hydrogen. An efficient way to obtain this compound is through the use of modern photocatalysts. Hence, the purpose of this paper is to review the recent literature on the effective use of catalysts in photocatalytic processes (e.g., glycerol conversion) that enable the synthesis of hydrogen.

show abstract

Section: Equationmentioning

confidence: 99%

Hydrogen Production Using Modern Photocatalysts

Wawrzyńczak,

Feliczak-Guzik

2024

Coatings

View full text Add to dashboard Cite

show abstract

“…Iron and/or H 2 O 2 assistance is a popular strategy in the literature [135][136][137]; here, two significant examples of the combination of titania with iron, H 2 O 2 and ultrasound to start different Fenton-like processes are reported in Table 1, entries 14 and 15. More detailed information on the modulation titania band gap, surface reactivity, charge transfer, and stability, among other properties, has been extensively reported in ad hoc reviews [138][139][140][141][142].…”

Section: Considerations On Chemical Compositions and Stabilitymentioning

confidence: 99%

An Overview of Environmental Catalysis Mediated by Hydrogen Peroxide

Rigoletto,

Laurenti,

Tummino

2024

Catalysts

View full text Add to dashboard Cite

The use of hydrogen peroxide (produced in situ or ex situ) as the main agent in oxidative processes of environmental pollutant removal is widely studied. The degradation of water pollutants, such as dyes, pharmaceuticals, cosmetics, petroleum derivatives, and even pathogens, has been successfully obtained by different techniques. This review gives an overview of the more recent methods developed to apply oxidative processes mediated by H2O2 and other reactive oxygen species (ROS) in environmental catalysis, with particular attention to the strategies (Fenton-like and Bio-Fenton, photo- and electro-catalysis) and the materials employed. A wide discussion about the characteristics of the materials specifically studied for hydrogen peroxide activation, as well as about their chemical composition and morphology, was carried out. Moreover, recent interesting methods for the generation and use of hydrogen peroxide by enzymes were also presented and their efficiency and applicability compared with the Fenton and electro-Fenton methods discussed above. The use of Bio-Fenton and bi-enzymatic methods for the in situ generation of ROS seems to be attractive and scalable, although not yet applied in full-scale plants. A critical discussion about the feasibility, criticalities, and perspectives of all the methods considered completes this review.

show abstract

“…Generally, the catalytic activity of photocatalysts depends on the surface microstructure of materials and the separation efficiency of photogenerated electron–hole pairs . So far, a great variety of approaches have been developed to boost the photocatalytic efficiency of materials through morphology-, composition-, surface-, interface-, defect-, and band engineering strategies. − Among them, the construction of a heterojunction/homojunction to establish a built-in electric field can effectively promote the separation of photogenerated charges and improve the utilization of visible light . Especially for an S-scheme heterojunction, it can also enable the charges with stronger chemical activity to participate in the catalytic reactions. , …”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Multihierarchical Hexagonal/Cubic ZnIn₂S₄ S-Scheme Heterophase Junction for Superior Photocatalysis

Ke,

Tang,

Xiong

et al. 2024

Inorg. Chem.

View full text Add to dashboard Cite

It is an important strategy to design composite materials with a special microstructure and a tunable electronic structure through structural compatibility. In this work, a novel hexagonal/cubic ZnIn 2 S 4 polymorphic heterophase junction with a three-dimensional multihierarchical structure is successfully constructed by in situ growth of hexagonal ZnIn 2 S 4 nanosheets on the surface of cubic ZnIn 2 S 4 flower-like microspheres prepared by topological chemical synthesis. On the one hand, the multihierarchical architecture provides large specific surface area, abundant active sites, and excellent light trapping capability. On the other hand, the construction of a direct S-scheme heterophase junction enables the formation of a special charge-transfer channel under the force of a built-in electric field, which not only improves the separation efficiency of carriers but also ensures the stronger reaction activity of charges. The prepared ZnIn 2 S 4 heterophase junction composite photocatalyst exhibits greatly boosted photocatalytic efficiency in rhodamine B degradation, hexavalent chromium reduction, and water splitting for hydrogen production, which are 12.3, 6.5, and 3.1 times higher than that of pure hexagonal ZnIn 2 S 4 and 8.1, 5.1, and 2.3 times higher than that of pure cubic ZnIn 2 S 4 , respectively, demonstrating its significant potential for applications in energy and environmental fields.

show abstract

Recent advances in structural engineering of photocatalysts for environmental remediation

Cited by 24 publications

References 167 publications

Hydrogen Production Using Modern Photocatalysts

Hydrogen Production Using Modern Photocatalysts

An Overview of Environmental Catalysis Mediated by Hydrogen Peroxide

Three-Dimensional Multihierarchical Hexagonal/Cubic ZnIn₂S₄ S-Scheme Heterophase Junction for Superior Photocatalysis

Contact Info

Product

Resources

About

Recent advances in structural engineering of photocatalysts for environmental remediation

Cited by 24 publications

References 167 publications

Hydrogen Production Using Modern Photocatalysts

Hydrogen Production Using Modern Photocatalysts

An Overview of Environmental Catalysis Mediated by Hydrogen Peroxide

Three-Dimensional Multihierarchical Hexagonal/Cubic ZnIn2S4 S-Scheme Heterophase Junction for Superior Photocatalysis

Contact Info

Product

Resources

About

Three-Dimensional Multihierarchical Hexagonal/Cubic ZnIn₂S₄ S-Scheme Heterophase Junction for Superior Photocatalysis