Evaluation of mass and photon transfer enhancement by an impinging jet atomization photoreactor for photocatalytic degradation of p-nitrophenol

Larijani, Roxana Saghafian; Ghadiri, Mohammad; Hafezi, Mohammad; Jafarikojour, Morteza; Dabir, Bahram

doi:10.1016/j.jphotochem.2020.113088

Cited by 10 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure a, the degradation efficiency of tetracycline gradually increased with the increase of the amount of catalyst. This mainly because the active sites increased with the increase of the electrons and holes . However, when the mass of the catalyst was further increased to 12 mg, the photocatalytic degradation effect was decreased, which was attributed to the fact that the catalyst dispersion was affected when the system contained an excessive amount of catalyst powder, impeded the interaction between the visible light and catalyst, and decreased the utilization rate of light while reducing the light penetration utilization …”

Section: Resultsmentioning

confidence: 99%

Highly Efficient Photocatalytic Degradation of Tetracycline by Modifying UiO-66 via Different Regulation Strategies

Jia,

Wang,

et al. 2023

ACS Omega

View full text Add to dashboard Cite

Wastewater containing organic pollutants cause potential harm to the environment and human health. A series of zirconium-organic frameworks (UiO-66) and their composites were synthesized by solvothermal methods, including band gap adjustment, heterojunction construction, and metal ion doping. For the model pollutant tetracycline (TC), all of the prepared catalysts could achieve effective degradation of it. Therein, the degradation efficiency of tetracycline could reach 95% under the UV irradiation with the aid of the catalyst, in which the UiO-66-NDC was modified with P–C3N4. The free radical capture experiments demonstrated that the superoxide radical (•O2 –) was the main oxidizing species for the photodegradation of tetracycline. Hence, the improvement strategy of the catalyst would provide some enlightenment for the development of more efficient photocatalysts for the degradation of organic dyes in wastewater.

show abstract

Section: Resultsmentioning

confidence: 99%

Highly Efficient Photocatalytic Degradation of Tetracycline by Modifying UiO-66 via Different Regulation Strategies

Jia,

Wang,

et al. 2023

ACS Omega

View full text Add to dashboard Cite

show abstract

“…From the degradation effect after 10 min in the figure, it can be seen that when the amount of catalyst is 10 mg, the degradation time is 24 min, and the conversion rate can reach 99.22 %. Within a certain range, as the amount of catalyst increases, the photocatalytic degradation effect and the degradation rate of the catalyst increase due to the increase in the active site of the catalyst, [28] but beyond this range, the photocatalytic effect decreases with the further increase in the amount of catalyst. The reason is that when the system contains excessive catalyst powder, the dispersion of the catalyst is affected, which hinders the interaction between visible light and the catalyst, and reduces the utilization rate of light while reducing the utilization rate of light penetration [29]…”

Section: Resultsmentioning

confidence: 99%

Titanium‐based MOFs‐derived Cabon‐supported Photocatalysts for the Efficient Degradation of Tetracycline

Wang,

Zhang,

Liu

et al. 2023

ChemistrySelect

View full text Add to dashboard Cite

In order to eliminate the public health hazard of tetracycline in a more environmentally friendly and efficient manner, a titanium‐based metal‐organic framework material containing Co ions was synthesised as a precursor by the traditional solvothermal method. Subsequently, a series of titanium‐based MOFs‐derived carbon‐supported photocatalysts were synthesised by calcining the precursor at different temperatures in air. All the prepared catalysts achieved effective degradation of the model pollutant tetracycline (TC). By adjusting the parameters such as TC concentration, catalyst dosage and irradiation time, the optimised composite material (TiCoOC‐800‐1) has a degradation rate of 99.4 % for the model pollutant TC with a concentration of 100 mg/L after under the UV irradiation during 30 min. Radical scavenging experiments showed that the main oxide species responsible for the rapid photodegradation of tetracycline were superoxide radicals (⋅O2−) and holes (h+). Finally, the liquid chromatography mass spectrometry (LC–MS) method was used to detect the molecular degradation intermediates of TC and a possible degradation pathway was proposed. This work will provide new ideas for the development of more efficient photocatalysts for the degradation of TC in wastewater.

show abstract

“…4b, in which C 0 and C represent the original and remaining concentrations of RhB. 46 The slope of the fitting lines in Fig. 4b denote the degradation rate constant of K ap .…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Charge Transfer in TiO₂/BiOI Heterojunction Using BiFeO₃ as Interface Modifier for Photoelectrochemical Conversion

Jiang¹,

Pathak²,

Zhang³

et al. 2021

J. Electrochem. Soc.

View full text Add to dashboard Cite

The solution-processed TiO2/BiFeO3/BiOI ternary heterojunction with cascade energy level alignments was developed for photoelectrochemical conversion, in which, BiOI was deposited on BiFeO3 sensitized TiO2 mesoporous film by spin-coating method. BiFeO3 as ferroelectric material was served here as a mediator for improvement of charge separation and transfer. The photocurrent generation in TiO2/BiFeO3/BiOI sample are very stable, even measured after 50 light on/off cycles with 2000 s. Moreover, compared with the TiO2/BiOI film, TiO2/BiFeO3/BiOI film showed about twice as high photocurrent density and photocatalytic activity. Kelvin probe force microscope showed that the surface potential of TiO2/BiFeO3/BiOI film was 0.456 V, which was obviously larger than 0.226 V in TiO2/BiOI sample. The increased surface potential should originate from the polarization electric-field E self by BiFeO3 interlayer, in which the direction of electric-field was directed toward the BiOI. The presence of E self consequently resulted in the better dissociation of photo-generated electrons and holes. Charge transport dynamics suggested that charge transfer rate increased from 6.813 s−1 of TiO2/BiOI heterojunction to 22.280 s−1 of TiO2/BiFeO3/BiOI heterojunction, and surface charge recombination rate reduced from 10.305 s−1 of the TiO2/BiOI to 7.707 s−1 of TiO2/BiFeO3/BiOI heterojunction, which results in the enhanced photoelectrochemical conversion in TiO2/BiFeO3/BiOI heterojunction.

show abstract

Evaluation of mass and photon transfer enhancement by an impinging jet atomization photoreactor for photocatalytic degradation of p-nitrophenol

Cited by 10 publications

References 49 publications

Highly Efficient Photocatalytic Degradation of Tetracycline by Modifying UiO-66 via Different Regulation Strategies

Highly Efficient Photocatalytic Degradation of Tetracycline by Modifying UiO-66 via Different Regulation Strategies

Titanium‐based MOFs‐derived Cabon‐supported Photocatalysts for the Efficient Degradation of Tetracycline

Enhancement of Charge Transfer in TiO₂/BiOI Heterojunction Using BiFeO₃ as Interface Modifier for Photoelectrochemical Conversion

Contact Info

Product

Resources

About

Evaluation of mass and photon transfer enhancement by an impinging jet atomization photoreactor for photocatalytic degradation of p-nitrophenol

Cited by 10 publications

References 49 publications

Highly Efficient Photocatalytic Degradation of Tetracycline by Modifying UiO-66 via Different Regulation Strategies

Highly Efficient Photocatalytic Degradation of Tetracycline by Modifying UiO-66 via Different Regulation Strategies

Titanium‐based MOFs‐derived Cabon‐supported Photocatalysts for the Efficient Degradation of Tetracycline

Enhancement of Charge Transfer in TiO2/BiOI Heterojunction Using BiFeO3 as Interface Modifier for Photoelectrochemical Conversion

Contact Info

Product

Resources

About

Enhancement of Charge Transfer in TiO₂/BiOI Heterojunction Using BiFeO₃ as Interface Modifier for Photoelectrochemical Conversion