Defective TiO2 Core-Shell Magnetic Photocatalyst Modified with Plasmonic Nanoparticles for Visible Light-Induced Photocatalytic Activity

Bielan, Zuzanna; Sulowska, Agnieszka; Dudziak, Szymon; Siuzdak, Katarzyna; Ryl, Jacek; Zielińska‐Jurek, Anna

doi:10.3390/catal10060672

Cited by 19 publications

(9 citation statements)

References 49 publications

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“…Core-shell NPs are also considered as another 0D morphology with interesting properties due to the formation of a functional system from the integration of individual components, improving chemical and physical properties, such as dispersibility, functionality, and stability, that might not be obtained for sole components [79,80]. The core-shell titania-structured materials are considered as highly wanted, not only due to enhanced stability and activity, but also because of improved recycling ability when a magnetic component is used in the composite [81,82]. Indeed, Bielan et al have found that the modification of magnetic core-shell particles (Fe 3 O 4 @SiO 2 /TiO 2 ) with NPs of platinum and/or copper has resulted in a high enhancement of hydrogen evolution (methanol as a hole scavenger) even by two orders of magnitude under UV/vis irradiation [83].…”

Section: Zero-dimension (0d) Photocatalystsmentioning

confidence: 99%

Morphology-Governed Performance of Multi-Dimensional Photocatalysts for Hydrogen Generation

et al. 2021

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In the past few decades, extensive studies have been performed to utilize the solar energy for photocatalytic water splitting; however, up to the present, the overall efficiencies reported in the literature are still unsatisfactory for commercialization. The crucial element of this challenging concept is the proper selection and design of photocatalytic material to enable significant extension of practical application perspectives. One of the important features in describing photocatalysts, although underestimated, is particle morphology. Accordingly, this review presents the advances achieved in the design of photocatalysts that are dedicated to hydrogen generation, with an emphasis on the particle morphology and its potential correlation with the overall reaction performance. The novel concept of this work—with the content presented in a clear and logical way—is based on the division into five parts according to dimensional arrangement groups of 0D, 1D, 2D, 3D, and combined systems. In this regard, it has been shown that the consideration of the discussed aspects, focusing on different types of particle morphology and their correlation with the system’s efficiency, could be a promising route for accelerating the development of photocatalytic materials oriented for solar-driven hydrogen generation. Finally, concluding remarks (additionally including the problems connected with experiments) and potential future directions of particle morphology-based design of photocatalysts for hydrogen production systems have been presented.

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Section: Zero-dimension (0d) Photocatalystsmentioning

confidence: 99%

Morphology-Governed Performance of Multi-Dimensional Photocatalysts for Hydrogen Generation

et al. 2021

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“…The concept of optimal titania layer has been suggested as inconsistent with an electron transfer mechanism since an increase in titania width might result in activity decrease (high probability of electrons' trapping before their arrival at the photocatalyst surface). Interesting approach has been proposed by Bielan et al for plasmonic photocatalysts (TiO2 with Pt and Cu/CuxO) supported on magnetic core for easy separation of photocatalyst after reaction ( Figure 13) [103,104]. The photocatalysts exhibit good reusability with almost same reaction rate for fresh and reused (after recovery by a magnet) photocatalysts during consequent photocatalytic cycles.…”

Section: Other Particulate Plasmonic Photocatalysts With Advanced Mormentioning

confidence: 99%

“…Although, Pt-modified titania samples show vis activity due to LSPR, the magnetic photocatalysts lose the vis response, probably because of "hot" electron trapping by magnetic core (Pt→TiO 2 →Fe 3 O 4 /SiO 2 ) [103], similarly as suggested for bimetallic [97] and hybrid (co-modified with ruthenium dye [105][106][107]) plasmonic photocatalysts. Interestingly, self-doped titania (titania with defects) significantly improves the photocatalytic activity under vis irradiation for both supported (on magnetic core) and unsupported plasmonic photocatalysts [104]. Interesting approach has been proposed by Bielan et al for plasmonic photocatalysts (TiO2 with Pt and Cu/CuxO) supported on magnetic core for easy separation of photocatalyst after reaction ( Figure 13) [103,104].…”

Section: One-dimensional Plasmonic Photocatalystsmentioning

confidence: 99%

“…Interestingly, self-doped titania (titania with defects) significantly improves the photocatalytic activity under vis irradiation for both supported (on magnetic core) and unsupported plasmonic photocatalysts [104]. Interesting approach has been proposed by Bielan et al for plasmonic photocatalysts (TiO2 with Pt and Cu/CuxO) supported on magnetic core for easy separation of photocatalyst after reaction ( Figure 13) [103,104]. The photocatalysts exhibit good reusability with almost same reaction rate for fresh and reused (after recovery by a magnet) photocatalysts during consequent photocatalytic cycles.…”

Section: One-dimensional Plasmonic Photocatalystsmentioning

confidence: 99%

“…Pt-modified core(Fe 3 O 4 )/interlayer(SiO 2 )/shell(TiO 2 ) photocatalysts magnetically separable and recyclable: (a) the schematic drawing; and (b) TEM image (Pt NP in red rectangle); adapted from[104]. Copyright 2020 Creative Commons Attribution.…”

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Morphology-Governed Performance of Plasmonic Photocatalysts

et al. 2020

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Plasmonic photocatalysts have been extensively studied for the past decade as a possible solution to energy crisis and environmental problems. Although various reports on plasmonic photocatalysts have been published, including synthesis methods, applications, and mechanism clarifications, the quantum yields of photochemical reactions are usually too low for commercialization. Accordingly, it has been proposed that preparation of plasmonic photocatalysts with efficient light harvesting and inhibition of charge carriers’ recombination might result in improvement of photocatalytic activity. Among various strategies, nano-architecture of plasmonic photocatalysts seems to be one of the best strategies, including the design of properties for both semiconductor and noble-metal-deposits, as well as the interactions between them. For example, faceted nanoparticles, nanotubes, aerogels, and super-nano structures of semiconductors have shown the improvement of photocatalytic activity and stability. Moreover, the selective deposition of noble metals on some parts of semiconductor nanostructures (e.g., specific facets, basal or lateral surfaces) results in an activity increase. Additionally, mono-, bi-, and ternary-metal-modifications have been proposed as the other ways of performance improvement. However, in some cases, the interactions between different noble metals might cause unwanted charge carriers’ recombination. Accordingly, this review discusses the recent strategies on the improvements of the photocatalytic performance of plasmonic photocatalysts.

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