Photocatalytic reduction of CO2 to hydrocarbons using bio-templated porous TiO2 architectures under UV and visible light

Hashemizadeh, Iman; Golovko, Vladimir B.; Choi, Jungkyu; Tsang, Daniel C.W.; Yip, Alex C.K.

doi:10.1016/j.cej.2018.04.094

Cited by 39 publications

(20 citation statements)

References 60 publications

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“…Nature offers hierarchical architectures with multilevel light scattering, high electron-diffusion length, open and accessible porosity, high surface-to-volume ratios, and high light absorption independent from incident light angle, among other important characteristics for photochemistry. It is well known that human-made materials have been unable to compete with nature in general [39][40][41][42]. It is, therefore, a smart strategy to synthesize bioinspired materials to develop more efficient and competitive materials.…”

Section: Introductionmentioning

confidence: 99%

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Serrà

Zhang

Sepúlveda

et al. 2019

Applied Catalysis B: Environmental

110

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Section: Introductionmentioning

confidence: 99%

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Serrà

Zhang

Sepúlveda

et al. 2019

Applied Catalysis B: Environmental

110

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“…Therefore, for instance, Mohamed et al [ 21 ] developed mesoporous nanotubes of TiO 2 replicating the cellulose structure, thus obtaining a catalyst with high catalytic efficiency in removal of organic pollutants from wastewater when illuminated with visible light. In a different approach, Hashemizadeh et al [ 22 ] described a procedure whereby Camellia leaves were modified through incorporation of TiO 2 and subsequently of RuO 2 . The use of the plant’s light collection system (mesoporous structures imitating the pores in green leaves) allowed the resulting solid to exhibit better results in CO 2 reduction or ethanol reforming than Evonik P25 itself (a reference titania photocatalyst), the artificial TiO 2 -based leaves even operating under visible light.…”

Section: Introductionmentioning

confidence: 99%

Olive Leaves as Biotemplates for Enhanced Solar-Light Harvesting by a Titania-Based Solid

et al. 2020

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Olive leaves (by-product from olive oil production in olive mills) were used as biotemplates to synthesize a titania-based artificial olive leaf (AOL). Scanning electron microscopy (SEM) images of AOL showed the successful replication of trichomes and internal structure channels present in olive leaves. The BET surface area of AOL was 52 m2·g−1. X-ray diffraction (XRD) and Raman spectra revealed that the resulting solid was in the predominantly-anatase crystalline form (7.5 nm average particle size). Moreover, the synthesis led to a red-shift in light absorption as compared to reference anatase (gap energies of 2.98 and 3.2 eV, respectively). The presence of surface defects (as evidenced by X-ray photoelectron spectroscopy, XPS, and electron paramagnetic resonance spectroscopy, EPR) and doping elements (e.g., 1% nitrogen, observed by elemental analysis and XPS) could account for that. AOL was preliminarily tested as a catalyst for hydrogen production through glycerol photoreforming and exhibited an activity 64% higher than reference material Evonik P25 under solar irradiation and 144% greater under ultraviolet radiation (UV).

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“…Similarly, a recent report presented the replication of Camella tree leaves for synthesis of a unique porous TiO 2 architecture with enhanced photocatalytic conversion of CO 2 into CH 4 and CO [74]. The TiO 2 artificial leaves (AL) were synthesized using a bio-template approach.…”

Section: Hierarchical Nanostructures: a Dynamic And Potent Approachmentioning

confidence: 99%

“…Image of camellia leaf, SEM image of artificial leaf displaying a porous structure, and the production rate of CO and CH 4 via the photocatalytic conversion of CO 2 and water vapors (taken with permission from [74]).…”

Section: Figurementioning

confidence: 99%

TiO2 Based Nanostructures for Photocatalytic CO2 Conversion to Valuable Chemicals

Razzaq

2019

Micromachines

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Photocatalytic conversion of CO2 to useful products is an alluring approach for acquiring the two-fold benefits of normalizing excess atmospheric CO2 levels and the production of solar chemicals/fuels. Therefore, photocatalytic materials are continuously being developed with enhanced performance in accordance with their respective domains. In recent years, nanostructured photocatalysts such as one dimensional (1-D), two dimensional (2-D) and three dimensional (3-D)/hierarchical have been a subject of great importance because of their explicit advantages over 0-D photocatalysts, including high surface areas, effective charge separation, directional charge transport, and light trapping/scattering effects. Furthermore, the strategy of doping (metals and non-metals), as well as coupling with a secondary material (noble metals, another semiconductor material, graphene, etc.), of nanostructured photocatalysts has resulted in an amplified photocatalytic performance. In the present review article, various titanium dioxide (TiO2)-based nanostructured photocatalysts are briefly overviewed with respect to their application in photocatalytic CO2 conversion to value-added chemicals. This review primarily focuses on the latest developments in TiO2-based nanostructures, specifically 1-D (TiO2 nanotubes, nanorods, nanowires, nanobelts etc.) and 2-D (TiO2 nanosheets, nanolayers), and the reaction conditions and analysis of key parameters and their role in the up-grading and augmentation of photocatalytic performance. Moreover, TiO2-based 3-D and/or hierarchical nanostructures for CO2 conversions are also briefly scrutinized, as they exhibit excellent performance based on the special nanostructure framework, and can be an exemplary photocatalyst architecture demonstrating an admirable performance in the near future.

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Photocatalytic reduction of CO2 to hydrocarbons using bio-templated porous TiO2 architectures under UV and visible light

Cited by 39 publications

References 60 publications

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Highly active ZnO-based biomimetic fern-like microleaves for photocatalytic water decontamination using sunlight

Olive Leaves as Biotemplates for Enhanced Solar-Light Harvesting by a Titania-Based Solid

TiO2 Based Nanostructures for Photocatalytic CO2 Conversion to Valuable Chemicals

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