Highly active and stable interface derived from Pt supported on Ni/Fe layered double oxides for HCHO oxidation

Lin, Min; Yu, Xiaolin; Yang, Xueqin; Li, Kezhi; Ge, Maofa; Li, Junhua

doi:10.1039/c7cy00154a

Cited by 70 publications

(23 citation statements)

References 44 publications

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“…Generally, the supported noble metal catalysts exhibit higher catalytic activities in HCHO oxidation at room temperature than metal oxide catalysts. And the supported Pt catalyst is the most active catalyst for HCHO oxidation at room temperature and attracts much attention . However, the high cost and limited resources hinder the application of supported noble metal catalysts .…”

Section: Introductionmentioning

confidence: 99%

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

2019

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Thermal catalytic oxidation is a promising and effective technique for the removal of harmful formaldehyde (HCHO) in indoor air. Manganese oxide is a mostly‐investigated non‐noble metal oxide catalyst and attracts much attention due to its better catalytic performance for formaldehyde oxidation at low temperature. In this review, the effect of manganese oxide crystal structure, surface morphology and microstructure, surface active oxygen species, reducibility as well as catalytic reaction conditions (temperature, relative humidity and HCHO initial concentration) on catalytic performance, and the catalytic mechanism over manganese oxide were summarized and discussed. The challenges and prospects for future development of manganese oxide in catalytic oxidation of formaldehyde are also covered.

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Section: Introductionmentioning

confidence: 99%

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

2019

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“…[8][9] Generally, noble metal oxide catalysts exhibit high catalytic activity at low temperatures for deep oxidation of VOCs. [10][11][12][13][14][15] However, their practical applications are greatly limited due to their high cost, easy sintering and poisoning nature. Compared with precious metal oxides, various active transition metal oxides (Co 3 O 4 , Mn 3 O 4 , CeO 2 , Fe 2 O 3 , NiO, TiO 2 , etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Generally, noble metal oxide catalysts exhibit high catalytic activity at low temperatures for deep oxidation of VOCs . However, their practical applications are greatly limited due to their high cost, easy sintering and poisoning nature.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of a Novel Double‐Sided Nanobrush Co₃O₄ Catalyst and Its Catalytic Performance for Benzene Oxidation

Yang

et al. 2019

ChemCatChem

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A double‐sided nanobrush Co3O4 (Co3O4−B) catalyst was successfully prepared by a hydrothermal method for the first time, and Co3O4 rods (Co3O4−R), Co3O4 hexagonal plates (Co3O4−H) and Co3O4 double‐sided helianthus discs (Co3O4−D) were also synthesized through tuning the water/ethanol ratio. Among all of the as‐prepared catalysts, the Co3O4−B catalyst exhibited the best catalytic activity for benzene oxidation. The excellent catalytic performance could be attributed to the surface abundance Co3+ species, good low‐temperature reducibility and high number of lattice defects with substantial active oxygen species, which resulted from the unique structure of the double‐sided nanobrush. The stability and water tolerance tests demonstrated that the Co3O4−B catalyst displays excellent stability for benzene combustion, and the deactivation caused by water vapor is also reversible. It is concluded that the unique structure of the catalysts plays a crucial role in determining its catalytic oxidation performance.

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“…Furthermore, the ratio of Ga + /Ga 3 + increased with a rise in calcination temperature. For each sample, the O 1s spectrum ( Figure 6C) could be decomposed to three components at BE = 530.8, 531.9, and 533.4 eV, attributable to the surface lattice oxygen (O latt ), adsorbed oxygen (O ads ), and adsorbed molecular water, [25,26] respectively. Compared the O 1s XPS spectra of pure support Pd/Al 2 O 3 and PdÀ GaO x /Al 2 O 3 ( Figure S11 and Figure 6C), we found that the binding energy of O in Pd/Al 2 O 3 and pure support is similar while the binding energy of O in PdÀ GaO x /Al 2 O 3 shift to the higher energy.…”

Section: Resultsmentioning

confidence: 99%

Highly Active and Stable Pd−GaO_x/Al₂O₃ Catalysts Derived from Intermetallic Pd₅Ga₃ Nanocrystals for Methane Combustion

et al. 2018

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Catalytic combustion of methane is widely used in industrial and transportation activities. The commonly used Pd‐based catalysts, however, are easily deactivated under hydrothermal conditions. In this work, we adopted a novel strategy to prepare a GaOx‐doped Pd/Al2O3 catalyst via the oxidative transformation of intermetallic Pd5Ga3 nanocrystals supported on γ‐Al2O3. We observed a synergistic effect between palladium and gallium oxide via formation of a bi‐functional active Pd−O−Ga phase, resulting in a highly active and exceptionally stable catalyst that could markedly suppress the sintering of noble metals under harsh conditions (hydrothermal treatment at 750 °C). Moreover, the presence of a large amount of surface oxygen vacancies and the surface Pd−O−Ga phase could promote methane combustion over the catalysts. It is believed that such a novel dual‐metal catalyst is promising in practical applications for methane combustion.

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Highly active and stable interface derived from Pt supported on Ni/Fe layered double oxides for HCHO oxidation

Abstract: In this work, Ni/Fe layered double oxide supported Pt nanoparticles (Pt/LDO(N)) were prepared using a hydrothermal and colloid-impregnation method. The catalyst exhibited remarkable HCHO oxidation ability and long-time stability.

Cited by 70 publications

References 44 publications

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

Hydrothermal Synthesis of a Novel Double‐Sided Nanobrush Co₃O₄ Catalyst and Its Catalytic Performance for Benzene Oxidation

Highly Active and Stable Pd−GaO_x/Al₂O₃ Catalysts Derived from Intermetallic Pd₅Ga₃ Nanocrystals for Methane Combustion

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Highly active and stable interface derived from Pt supported on Ni/Fe layered double oxides for HCHO oxidation

Abstract: In this work, Ni/Fe layered double oxide supported Pt nanoparticles (Pt/LDO(N)) were prepared using a hydrothermal and colloid-impregnation method. The catalyst exhibited remarkable HCHO oxidation ability and long-time stability.

Cited by 70 publications

References 44 publications

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

Hydrothermal Synthesis of a Novel Double‐Sided Nanobrush Co3O4 Catalyst and Its Catalytic Performance for Benzene Oxidation

Highly Active and Stable Pd−GaOx/Al2O3 Catalysts Derived from Intermetallic Pd5Ga3 Nanocrystals for Methane Combustion

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Hydrothermal Synthesis of a Novel Double‐Sided Nanobrush Co₃O₄ Catalyst and Its Catalytic Performance for Benzene Oxidation

Highly Active and Stable Pd−GaO_x/Al₂O₃ Catalysts Derived from Intermetallic Pd₅Ga₃ Nanocrystals for Methane Combustion