Visible light active Fe-Pr co-doped TiO2 for water pollutants degradation

Mancuso, Antonietta; Sacco, Olga; Vaiano, Vincenzo; Sannino, Diana; Pragliola, Stefania; Venditto, Vincenzo; Morante, Nicola

doi:10.1016/j.cattod.2021.04.018

Cited by 46 publications

(18 citation statements)

References 70 publications

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“…By nitrogen adsorption-desorption, it was observed that the incorporation of copper species into the TiO 2 structure increased the specific surface area and the pore volume with respect to the pure TiO 2 catalyst. The Cu/TiO 2 sample exhibited twice the surface area than that obtained with the pure TiO 2 material, and the pore volume increased from 0.26 to 0.48 cm 3 /g, which can be attributed to structural defects in the titania due to the presence of Cu cations [34]. The average pore diameter remained constant at 5.7 nm in both catalysts.…”

Section: Characterizationmentioning

confidence: 86%

Photo-Oxidation of Glycerol Catalyzed by Cu/TiO2

et al. 2022

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In the present study, glycerol was oxidized by photocatalysis to glyceraldehyde, formaldehyde, and formic acid. Copper-doped TiO2 was synthesized by the evaporation-induced self-assembly approach and it was used as catalyst during the glycerol photo-oxidation reactions. The prepared mesoporous material exhibited high specific surface area (242 m2/g) and band gap energy reduction of 2.55 eV compared to pure titania (3.2 eV) by the synthesis method due to the presence of copper cations (Cu2+ identified by XPS). The catalyst showed only anatase crystalline phase with nanocrystals around 8 nm and irregular agglomerates below 100 μm. The selectivity and formation rate of the products were favored towards formaldehyde and glyceraldehyde. The variables studied were catalyst amount, reaction temperature, and initial glycerol concentration. The response surface analysis was used to evaluate the effect of the variables on the product’s concentration. The optimized conditions were 0.4 g/L catalyst, 0.1 mol/L glycerol, and temperature 313.15 K. The response values under optimal conditions were 3.23, 8.17, and 1.15 mM for glyceraldehyde, formaldehyde, and formic acid, respectively. A higher selectivity towards formaldehyde was observed when visible light was used as the radiation source. This study is useful to evaluate the best reaction conditions towards value-added products during the oxidation of glycerol by photocatalysis using Cu/TiO2.

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Section: Characterizationmentioning

confidence: 86%

Photo-Oxidation of Glycerol Catalyzed by Cu/TiO2

et al. 2022

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“…They include dyes, for which titania co-doping with iron and praseodymium was recently reported to significantly narrow the band gap. Moreover, it promoted the generation of oxygen vacancies, which can trap electrons and thus reduce the recombination of charge carriers [208]. Nitrogen and sulfur co-doping represents a very popular strategy to enhance the photodegradation of cationic dyes [209].…”

Section: Photocatalysis For Environmental Remediationmentioning

confidence: 99%

Carbon Nanostructures Decorated with Titania: Morphological Control and Applications

et al. 2021

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Nanostructured titania (TiO2) is the most widely applied semiconducting oxide for a variety of purposes, and it is found in many commercial products. The vast majority of uses rely on its photo-activity, which, upon light irradiation, results in excited states that can be used for diverse applications. These range from catalysis, especially for energy or environmental remediation, to medicine—in particular, to attain antimicrobial surfaces and coatings for titanium implants. Clearly, the properties of titania are enhanced when working at the nanoscale, thanks to the increasingly active surface area. Nanomorphology plays a key role in the determination of the materials’ final properties. In particular, the nucleation and growth of nanosized titania onto carbon nanostructures as a support is a hot topic of investigation, as the nanocarbons not only provide structural stability but also display the ability of electronic communication with the titania, leading to enhanced photoelectronic properties of the final materials. In this concise review, we present the latest progress pertinent to the use of nanocarbons as templates to tailor nanostructured titania, and we briefly review the most promising applications and future trends of this field.

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“…30 Doping exotic chemical elements (such as S and N) can reduce the bandgap of TiO 2 and facilitate photogenerated carrier separation. [31][32][33][34][35] Anatase/rutile junction is advantageous to photogenerated carrier separation at the interface. 36 Herein, the N and S co-doping, anatase/rutile junction construction, and morphology regulation of TiO 2 arrays were successfully achieved by an acid bath treatment of titanate arrays with the assistance of potassium persulfate (PPS).…”

Section: Introductionmentioning

confidence: 99%

“…30 Doping exotic chemical elements (such as S and N) can reduce the bandgap of TiO 2 and facilitate photogenerated carrier separation. 31–35 Anatase/rutile junction is advantageous to photogenerated carrier separation at the interface. 36…”

Section: Introductionmentioning

confidence: 99%