Copper and platinum doped titania for photocatalytic reduction of carbon dioxide

Ambrožová, Nela; Reli, Martin; Šihor, Marcel; Kuśtrowski, Piotr; Wu, Jeffrey C.S.; Kočí, Kamila

doi:10.1016/j.apsusc.2017.06.307

Cited by 66 publications

(26 citation statements)

References 62 publications

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“…Hence, hybridization of V 2 O 5 with reduced graphene oxide (RGO) yields high photocatalytic activity and stability even under natural irradiation, making it ideal for reuse over multiple cycles . Additionally, doping with noble metals increases light adsorption in the visible light region due to greater surface excitation . Among all the noble metals, platinum doping has been found to significantly increase the durability and electrocatalytic activity of the photocatalyst .…”

Section: Introductionmentioning

confidence: 99%

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Mohan

Selvaraj²,

Shanthi³

et al. 2018

Env Prog and Sustain Energy

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The increasing prevalence of antibiotics in the environment has promoted the development of antibiotic resistant microorganisms, and novel approaches are needed to effectively remove antibiotics from water and mitigate this worldwide problem. A reduced graphene oxide‐V2O5 (RGOV) nanocomposite was synthesized and used for photocatalytic degradation of the antibiotic oxytetracycline (OTC) in aqueous solution. The Sol–Gel method was employed for V2O5 synthesis from e‐waste‐based vanadium nitrate, and a one pot solvothermal method was used to synthesize RGOV. Fourier‐transform infrared spectroscopy (FTIR), X‐ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM) with energy dispersive analysis of X‐rays (EDAX) confirmed V‐O‐C bonds on the surface of the RGOV nanocomposites. A decrease in the band gap of V2O5 from 2.21 to 2.13 eV was supported by diffuse reflectance ultraviolet–visible spectrophotometry. OTC adsorption onto the nanocomposite increased with an increase in RGO concentration and saturated at 17% for RGOV with 30% graphene oxide. The composite degraded 90% of the OTC present in aqueous solution (50 mg/L). Platinum (1%) doping further increased OTC degradation by the nanocomposite to 98.7%. Optimum conditions for maximum OTC degradation are (1) an initial OTC concentration of 50 mg/L, (2) a RGOV nanocomposite dose of 0.5 g/L, and (3) a 40 min incubation time. Our results support the potential use of RGOV nanocomposite for OTC photodegradation. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13123, 2019

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Section: Introductionmentioning

confidence: 99%

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Mohan

Selvaraj²,

Shanthi³

et al. 2018

Env Prog and Sustain Energy

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“…First-principle calculation and in situ X-ray photoelectron spectroscopy measurement reveal that the delocalized electrons in GDY can hybrid with the empty orbitals in TiO 2 within the TiO 2 /GDY network, leading to the formation of an internal electric field at the interfaces, pointing from GDY to TiO 2 . [23][24][25][26][27][28] However, noble metals are scarce and expensive, hindering their prospect severely. These effects, in combination with the photothermal effect of GDY, result in enhanced charge separation and directed electron transfer, enhanced CO 2 adsorption and activation as well as accelerated catalytic reactions over the TiO 2 /GDY heterostructure, thereby resulting in significantly improved CO 2 photoreduction efficiency and meanwhile with remarkable selectivity.…”

mentioning

confidence: 99%

“…[12][13][14][15][16] However, the photocatalytic efficiency of unitary TiO 2 is still far away from the practical requirements largely due to its rapid electron-hole recombination. [23][24][25][26][27][28] However, noble metals are scarce and expensive, hindering their prospect severely. [21,22] Up to now, various cocatalysts have been exploited to promote the photocatalytic performance of TiO 2 and the most widely used cocatalysts were noble metals, such as Pt, Pd, Au, Ag, and their alloys.…”

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confidence: 99%

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Meng

Zhu

et al. 2019

Adv Funct Materials

252

178

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Exploring new and efficient cocatalysts to boost photocatalytic CO 2 reduction is of critical importance for solar-to-fuel conversion. As an emerging carbon allotrope, graphdiyne (GDY) features 2D characteristics and unique carboncarbon bonds. Herein, a novel GDY cocatalyst coupled TiO 2 nanofibers for boosted photocatalytic CO 2 reduction, synthesized by an electrostatic selfassembly approach is reported. First-principle calculation and in situ X-ray photoelectron spectroscopy measurement reveal that the delocalized electrons in GDY can hybrid with the empty orbitals in TiO 2 within the TiO 2 /GDY network, leading to the formation of an internal electric field at the interfaces, pointing from GDY to TiO 2 . The theoretical simulation further implies strong chemisorption and deformation of CO 2 molecules upon GDY, which can be verified by in situ diffuse reflectance infrared Fourier transform spectroscopy. These effects, in combination with the photothermal effect of GDY, result in enhanced charge separation and directed electron transfer, enhanced CO 2 adsorption and activation as well as accelerated catalytic reactions over the TiO 2 /GDY heterostructure, thereby resulting in significantly improved CO 2 photoreduction efficiency and meanwhile with remarkable selectivity. This work demonstrates that GYD can function as a highly effective cocatalyst for solar energy harvesting and may be used in other catalysis processes.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201904256. solar irradiation is recognized as a potential solution to these issues. [6][7][8][9][10][11] As one of the most popular photocatalytic materials, TiO 2 is chemically stable, nontoxic and earth-abundant to be proverbially utilized for CO 2 photoreduction. [12][13][14][15][16] However, the photocatalytic efficiency of unitary TiO 2 is still far away from the practical requirements largely due to its rapid electron-hole recombination. [17][18][19][20] Modifying TiO 2 with a cocatalyst has been widely adopted to tackle this issue owing to the advantages of cocatalysts such as improving the selectivity, minimizing the overpotentials, promoting the charge separation, enhancing the adsorption of CO 2 , suppressing the photocorrosion and so on. [21,22] Up to now, various cocatalysts have been exploited to promote the photocatalytic performance of TiO 2 and the most widely used cocatalysts were noble metals, such as Pt, Pd, Au, Ag, and their alloys. [23][24][25][26][27][28] However, noble metals are scarce and expensive, hindering their prospect severely. Therefore, it is of significance to search for novel cocatalysts for TiO 2 -based photocatalyst to improve the photocatalytic CO 2 reduction performance.Carbon allotropes such as 0D carbon dot, 1D carbon nanotube and 2D graphene have attracted significant interests in many fields including catalysis, new device structures and solar energy harvesting. [29][30][31] Particularly, the discovery of graphene has raised a wave of new ...

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“…TiO 2 has been proven to be one of the most suitable materials for the photocatalysis and solar energy conversion because of its suitable valence and conduction band alignment, long-term stability, non-toxicity and cost-effectiveness [20][21][22][23][24][25] . According to Zhang et.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of formaldehyde and formic acid formation on (101)-TiO₂@Cu₄ systems through CO₂ hydrogenation

Singh

Gupta

Seriani

et al. 2021

Sustainable Energy Fuels

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Copper and platinum doped titania for photocatalytic reduction of carbon dioxide

Cited by 66 publications

References 62 publications

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Mechanism of formaldehyde and formic acid formation on (101)-TiO₂@Cu₄ systems through CO₂ hydrogenation

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Copper and platinum doped titania for photocatalytic reduction of carbon dioxide

Cited by 66 publications

References 62 publications

E‐Waste Based V2O5/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

E‐Waste Based V2O5/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Graphdiyne: A New Photocatalytic CO2 Reduction Cocatalyst

Mechanism of formaldehyde and formic acid formation on (101)-TiO2@Cu4 systems through CO2 hydrogenation

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E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

E‐Waste Based V₂O₅/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Mechanism of formaldehyde and formic acid formation on (101)-TiO₂@Cu₄ systems through CO₂ hydrogenation