Mixed phase anatase nanosheets/brookite nanorods TiO2 photocatalysts for enhanced gas phase CO2 photoreduction and H2 production

Ioannidou, Thaleia; Anagnostopoulou, Maria; Vasiliadou, Ioanna A.; Marchal, Clément; Alexandridou, Eirini-Olga; Keller, Valérie; Christoforidis, Konstantinos C.

doi:10.1016/j.jece.2023.111644

Cited by 3 publications

(3 citation statements)

References 59 publications

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“…The introduction of Pt (1 wt.%) was realized by a chemical reduction deposition method, using H 2 PtCl 6 and NaBH 4 as the reducing agent following a process already reported [4].…”

Section: Pt Depositionmentioning

confidence: 99%

“…Therefore, many different types of materials have been developed and applied in CO 2 photocatalytic reduction. As in other photocatalytic reactions, TiO 2 has been intensively studied in CO 2 reduction [2][3][4]. However, inherent drawbacks related to fast charge carriers' recombination and UV-light response prevent further application of TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

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Cu-Metalated Porphyrin-Based MOFs Coupled with Anatase as Photocatalysts for CO2 Reduction: The Effect of Metalation Proportion

Anagnostopoulou,

Keller,

Christoforidis

2024

Energies

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Converting carbon dioxide (CO2) into valuable chemicals such as fossil resources via photocatalysis requires the development of advanced materials. Herein, we coupled zirconium-based metal–organic frameworks (MOFs) containing porphyrin and Cu-porphyrin with anatase TiO2. The effect of the porphyrin metalation proportion was also investigated. Notably, while the use of free-base porphyrin as the organic linker resulted in the development of PCN-224, the presence of Cu-porphyrin provided mixed-phase MOF structures containing both PCN-224 and PCN-222. MOF/TiO2 composites bearing partial (50%) metalated porphyrin were proven more active and selective towards the production of CH4, at ambient conditions, in the gas phase and using water vapors without the use of hole scavengers. The optimized composite bearing 15 wt.% of the partial metalated MOF was three times more active than pure TiO2 towards CH4 production. This study provides insights on the effect of precise materials engineering at a molecular level on the development of advanced MOF-based photocatalysts for CO2 reduction.

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“…The introduction of Pt (1 wt.%) was realized by a chemical reduction deposition method, using H 2 PtCl 6 and NaBH 4 as the reducing agent following a process already reported [4].…”

Section: Pt Depositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cu-Metalated Porphyrin-Based MOFs Coupled with Anatase as Photocatalysts for CO2 Reduction: The Effect of Metalation Proportion

Anagnostopoulou,

Keller,

Christoforidis

2024

Energies

Self Cite

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“…The hydrothermal synthesis method is a reaction occurring at high temperature and high pressure [44], which uses water or organic solvent as a medium through heating so that insoluble or insoluble substances are dissolved or recrystallized after washing and centrifugation to obtain the required nanoparticle. Rawat [45], Matakgane [46], et al prepared composite photocatalysts by hydrothermal method.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

Research Progress of TiO2 Modification and Photodegradation of Organic Pollutants

Mao,

Zha,

et al. 2024

Inorganics

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Titanium dioxide (TiO2) photocatalysts, characterized by exceptional photocatalytic activity, high photoelectric conversion efficiency, and economic viability, have found widespread application in recent years for azo dye degradation. However, inherent constraints, such as the material’s limited visible light absorption stemming from its bandgap and the swift recombination of charge carriers, have impeded its broader application potential. Encouragingly, these barriers can be mitigated through the modification of TiO2. In this review, the common synthesis methods of TiO2 are reviewed, and the research progress of TiO2 modification technology at home and abroad is discussed in detail, including precious metal deposition, transition metal doping, rare earth metal doping, composite semiconductors, and composite polymers. These modification techniques effectively enhance the absorption capacity of TiO2 in the visible region and reduce the recombination rate of carriers and electrons, thus significantly improving its photocatalytic performance. Finally, this paper looks forward to the future development direction of TiO2 photocatalytic materials, including the exploration of new modified materials, in-depth mechanism research, and performance optimization in practical applications, to provide useful references for further research and application of TiO2 photocatalytic materials.

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Structural, spectroscopic and improved photoelectrochemical properties of TiO2/C composites with anatase/brookite matrix, prepared by air-thermolysis of microspherical titanium glycolate

Ulyanova,

Shalaeva,

Krasil'nikov

et al. 2024

Materials Chemistry and Physics

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Mixed phase anatase nanosheets/brookite nanorods TiO2 photocatalysts for enhanced gas phase CO2 photoreduction and H2 production

Cited by 3 publications

References 59 publications

Cu-Metalated Porphyrin-Based MOFs Coupled with Anatase as Photocatalysts for CO2 Reduction: The Effect of Metalation Proportion

Cu-Metalated Porphyrin-Based MOFs Coupled with Anatase as Photocatalysts for CO2 Reduction: The Effect of Metalation Proportion

Research Progress of TiO2 Modification and Photodegradation of Organic Pollutants

Structural, spectroscopic and improved photoelectrochemical properties of TiO2/C composites with anatase/brookite matrix, prepared by air-thermolysis of microspherical titanium glycolate

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