Recent progress in the synthesis of CeO2-based nanocatalysts towards efficient oxidation of CO

Cam, Thanh Son; Omarov, Shamil O.; Chebanenko, Maria I.; Izotova, S. G.; Попков, В.И.

doi:10.1016/j.jsamd.2021.11.001

Cited by 15 publications

(13 citation statements)

References 106 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison, as a unique rare metal oxide, CeO 2 has been applied as a superior reducible supporting oxide due to its rich reservation and fast storage/release oxygen ability [ 27 ]. More importantly, the reversible Ce 3+ /Ce 4+ redox reaction and easy generation of oxygen vacancies in CeO 2 can contribute to the improvement in CO oxidation rate [ 28 , 29 ]. Previous studies also imply that the morphology and facets of CeO 2 -based nanocomposites can greatly influence the formation and migration of surface oxygen vacancies, and nanosized structured CeO 2 materials, including nanospheres, nanorods, and nanocubes [ 30 , 31 ], have been synthesized.…”

Section: Introductionmentioning

confidence: 99%

CeO2-Supported TiO2−Pt Nanorod Composites as Efficient Catalysts for CO Oxidation

et al. 2023

View full text Add to dashboard Cite

Supported Pt-based catalysts have been identified as highly selective catalysts for CO oxidation, but their potential for applications has been hampered by the high cost and scarcity of Pt metals as well as aggregation problems at relatively high temperatures. In this work, nanorod structured (TiO2−Pt)/CeO2 catalysts with the addition of 0.3 at% Pt and different atomic ratios of Ti were prepared through a combined dealloying and calcination method. XRD, XPS, SEM, TEM, and STEM measurements were used to confirm the phase composition, surface morphology, and structure of synthesized samples. After calcination treatment, Pt nanoparticles were semi-inlayed on the surface of the CeO2 nanorod, and TiO2 was highly dispersed into the catalyst system, resulting in the formation of (TiO2−Pt)/CeO2 with high specific surface area and large pore volume. The unique structure can provide more reaction path and active sites for catalytic CO oxidation, thus contributing to the generation of catalysts with high catalytic activity. The outstanding catalytic performance is ascribed to the stable structure and proper TiO2 doping as well as the combined effect of Pt, TiO2, and CeO2. The research results are of importance for further development of high catalytic performance nanoporous catalytic materials.

show abstract

Section: Introductionmentioning

confidence: 99%

CeO2-Supported TiO2−Pt Nanorod Composites as Efficient Catalysts for CO Oxidation

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Vibration peaks of H 2 O and CO 2 adsorption centered at about 877, 1638, 1434, 3420 cm −1 are typical of bending δ(CO 3 2− ), δ(H−O−H), and stretching ν(CO 3 2− ), ν(H−O−H), respectively [19,37] …”

Section: Resultsmentioning

confidence: 99%

“…* Stretching vibrations of oxide species located at about 428 and 564 cm À 1 are attributed to ν(TbÀ O) and ν(FeÀ O), respectively; [19,27] * Vibration peaks of H 2 O and CO 2 adsorption centered at about 877, 1638, 1434, 3420 cm À 1 are typical of bending δ(CO 3 2À ), δ(HÀ OÀ H), and stretching ν(CO 3 2À ), ν(HÀ OÀ H), respectively. [19,37] paramagnetic. [38,39] The magnetization monotonically increases as the field grows, similar to.…”

Section: Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Structural, Optical, and Magnetic Properties of o‐TbFeO₃ Nanomaterials Synthesized by the co‐Precipitation Method

Anh Tien,

Kim Hoang,

Olegovna Mittova

et al. 2023

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

Following the co‐precipitation method for producing terbium orthoferrite (TbFeO3), the final products were denoted as TbFeO3‐650, −750, and −850. A single‐phase of orthorhombic TbFeO3 crystals (o‐TbFeO3) was obtained with a calcination temperature of up to 850 °C, while in the range of 650–750 °C there was still a small amount of terbium and iron oxide phases. The average size of o‐TbFeO3 crystallites for the TbFeO3‐850 sample was about 76 nm and was larger than that of TbFeO3‐650 (~45 nm) and TbFeO3‐750 (~47 nm). The o‐TbFeO3 crystal structure in all samples was found to be distorted. In the applied field from −15 to +15 kOe, all of the samples had low values of coercive field (5–11 ⋅ 10−3 Oe) but high values of net magnetization (2.06–2.40 emu ⋅ g−1); the samples appeared to behave as paramagnetic materials. It was shown that the TbFeO3‐850 sample has slightly better magnetic properties than the two others. An average grain size of about 79 nm was found in the TbFeO3‐850 sample, which exhibited a morphology of sphere‐like shapes with highly agglomerated grains. The TbFeO3‐850 sample demonstrated a high absorbance at wavelengths of 400–600 nm, with a direct bandgap of about 2.68 eV.

show abstract

“…18,31,32 Additionally, reviews on characteristic reactions catalyzed by CeO 2 -based catalysts, including CO 2 conversion, CO oxidation, and selective hydrogenation, have also been published to illuminate their remarkable process. 19,33–37 Furthermore, other applications of CeO 2 in photocatalysis or biomedicine are also summed up. 38,39 However, most reviews have focused on the discussion of the reversible redox properties of CeO 2 -based materials and their potential applications based on high OSC; few systematically investigate the acid/base properties of CeO 2 for catalytic reactions, particularly in heterogeneous liquid catalysis at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Recent advancements in CeO₂-enabled liquid acid/base catalysis

Zhang,

et al. 2024

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Recent progress in the synthesis of CeO2-based nanocatalysts towards efficient oxidation of CO

Cited by 15 publications

References 106 publications

CeO2-Supported TiO2−Pt Nanorod Composites as Efficient Catalysts for CO Oxidation

CeO2-Supported TiO2−Pt Nanorod Composites as Efficient Catalysts for CO Oxidation

Structural, Optical, and Magnetic Properties of o‐TbFeO₃ Nanomaterials Synthesized by the co‐Precipitation Method

Recent advancements in CeO₂-enabled liquid acid/base catalysis

Contact Info

Product

Resources

About

Recent progress in the synthesis of CeO2-based nanocatalysts towards efficient oxidation of CO

Cited by 15 publications

References 106 publications

CeO2-Supported TiO2−Pt Nanorod Composites as Efficient Catalysts for CO Oxidation

CeO2-Supported TiO2−Pt Nanorod Composites as Efficient Catalysts for CO Oxidation

Structural, Optical, and Magnetic Properties of o‐TbFeO3 Nanomaterials Synthesized by the co‐Precipitation Method

Recent advancements in CeO2-enabled liquid acid/base catalysis

Contact Info

Product

Resources

About

Structural, Optical, and Magnetic Properties of o‐TbFeO₃ Nanomaterials Synthesized by the co‐Precipitation Method

Recent advancements in CeO₂-enabled liquid acid/base catalysis