Graphene aerogel loaded with CeO2 as a catalyst for selective catalytic reduction of NOx with NH3 at low temperature

Zhu, Kunmeng; Ruan, Lifang; Ren, Jian; Cui, Sheng; Shen, Xiaodong

doi:10.1016/j.jallcom.2022.168409

Cited by 9 publications

(2 citation statements)

References 56 publications

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“…Since the content of GO is decreased and the etching-self-assembled CuO nanoflakes introduced abundant defects in the composites, the result was an increase in the I D /I G value. 40,41 In Table S1 (ESI †), one can see that the value of I D /I G of the composite gradually decreases with increasing amount of Cu 2 O, which indicates the increased graphitization and reduction of GO. 42 To further explore the structure of 550Cu 2 O/CuO@rGO composites, FTIR spectra are analysed.…”

Section: Materials and Chemicalsmentioning

confidence: 99%

One-step green synthesis of Cu₂O/CuO@rGO composites for ppt level detection of NO₂ at room temperature

Li,

Hu,

et al. 2023

J. Mater. Chem. C

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Section: Materials and Chemicalsmentioning

confidence: 99%

One-step green synthesis of Cu₂O/CuO@rGO composites for ppt level detection of NO₂ at room temperature

Li,

Hu,

et al. 2023

J. Mater. Chem. C

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“…Aerogels have tunable composition and structure and are expected to improve the ORR catalytic performance by constructing three-dimensional networks with high porosity and specific surface area and interpores. ,− In this study, we investigate the oxygen reduction performance of TiO 2 aerogels doped with different metals, including Fe, Co, Ni, Cu, and Pt, prepared via a sol–gel and supercritical drying process. We aim to elucidate the effect of each metal dopant on the oxygen reduction performance of TiO 2 aerogels and explore the underlying mechanisms that govern their catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

General Approach to the Synthesis of Metal Hybrid Carbon/Titania Aerogel for the Oxygen Reduction Reaction

Ren,

Zhao,

Kong

et al. 2024

Energy Fuels

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A mass production route to catalysts for the oxygen reduction reaction (ORR) is crucial for their end-use application.To date, the direct manufacture of ORR catalysts through simple and economic manufacturing routes remains a challenge, with current approaches relying on convoluted processes using expensive components. Here, a straightforward and cost-effective method is developed to fabricate metal hybrid carbon/titania composite aerogels (CTA-M) as ORR catalysts, which was obtained via carbonizing metal hybrid resorcinol−formaldehyde (RF)/titania composite aerogels at 900 °C in an inert atmosphere. The effect of metal nitrate, including La, Sm, Zr, Cr, Fe, and Cu nitrates, on the structure and ORR performance was investigated. The high porosity and specific surface area enabled CTA-M with a high mass transfer performance. The high asymmetry of anatase leads to the presence of oxygen vacancies in the crystal structure of CTA-M, which maintains the electrostatic equilibrium of the crystal structure, which verifies that the catalytic activity of anatase is superior to that of rutile, whereas the non-homogeneous product enhances the electrical conductivity, which further affects the catalytic activity of the ORR. Trace metal doping can modulate the electronic structure and composition of CTA-M. Iron nitrate doping carbon/titania aerogel (CTA-Fe-A) showed the best pore structure and oxygen adsorption performance. The specific surface area and pore volume of CTA-Fe-A were 720 m 2 g −1 and 1.12 cm 3 g −1 , respectively. The onset potential, half-wave potential, and ultimate current density were 0.82 V, 0.74 V, and 4.96 mA cm −2 , respectively. It is expected that this synthesis technique and the resulting CTA-M could be used as a method for large-scale commercial production of ORR catalysts, thus enabling the use of these materials in a broad spectrum of industrial applications.

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CuOx and WOx modified CeO2-TiO2 with various morphologies for the selective catalytic reduction of NOx with NH3

Li,

Gao,

Deng

et al. 2023

Applied Surface Science

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Graphene aerogel loaded with CeO2 as a catalyst for selective catalytic reduction of NOx with NH3 at low temperature

Cited by 9 publications

References 56 publications

One-step green synthesis of Cu₂O/CuO@rGO composites for ppt level detection of NO₂ at room temperature

One-step green synthesis of Cu₂O/CuO@rGO composites for ppt level detection of NO₂ at room temperature

General Approach to the Synthesis of Metal Hybrid Carbon/Titania Aerogel for the Oxygen Reduction Reaction

CuOx and WOx modified CeO2-TiO2 with various morphologies for the selective catalytic reduction of NOx with NH3

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Graphene aerogel loaded with CeO2 as a catalyst for selective catalytic reduction of NOx with NH3 at low temperature

Cited by 9 publications

References 56 publications

One-step green synthesis of Cu2O/CuO@rGO composites for ppt level detection of NO2 at room temperature

One-step green synthesis of Cu2O/CuO@rGO composites for ppt level detection of NO2 at room temperature

General Approach to the Synthesis of Metal Hybrid Carbon/Titania Aerogel for the Oxygen Reduction Reaction

CuOx and WOx modified CeO2-TiO2 with various morphologies for the selective catalytic reduction of NOx with NH3

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One-step green synthesis of Cu₂O/CuO@rGO composites for ppt level detection of NO₂ at room temperature

One-step green synthesis of Cu₂O/CuO@rGO composites for ppt level detection of NO₂ at room temperature