Oxalic acid-mediated regeneration strategy and mechanism of phosphorus poisoned CeO2/TiO2 catalysts for selective catalytic reduction of NO  with NH3

Gao, Fei; Zeng, Yiqing; Zhang, Shule; Zhong, Zhaoxiang

doi:10.1016/j.jece.2023.111792

Cited by 1 publication

(1 citation statement)

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“…This implied that the TiO 2 in the PCT-400-550 sample was bonded to the carbon via a C-O-Ti bond. The high-resolution XPS spectrum of P2p (Figure 3e) can be peak-fitted into two peaks at 133.20 eV and 134.12 eV, corresponding to the P 2p3 and 2p1 orbitals, respectively, providing evidence for the existence of P-O bonds [39]. The high-resolution XPS spectrum of K2p (Figure 3f) can be peak-fitted into two peaks at 292.82 eV and 295.59 eV, corresponding to the K 2p3 and 2p1 orbitals, respectively, confirming the presence of potassium ions [40].…”

Section: Surface Elemental Analysis Of Prepared Samplesmentioning

confidence: 99%

Waste Biomass-Mediated Synthesis of TiO2/P, K-Containing Grapefruit Peel Biochar Composites with Enhanced Photocatalytic Activity

Wu,

Liu,

Bai

et al. 2024

Molecules

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In this study, TiO2/P, K-containing grapefruit peel biochar (TiO2/P, K-PC) composites were synthesized in situ biomimetically using grapefruit peel as the bio-template and carbon source and tetrabutyl titanate as the titanium source. This was achieved using the two-step rotary impregnation–calcination method. Adjusting the calcination temperature of the sample in an air atmosphere could regulate the mass ratio of TiO2 to carbon. The prepared samples were subjected to an analysis of their compositions, structures, morphologies, and properties. It demonstrated that the prepared samples were complexes of anatase TiO2 and P, K-containing carbon, with the presence of graphitic carbon. They possessed a unique morphological structure with abundant pores and a large surface area. The grapefruit peel powder played a crucial role in the induction and assembly of TiO2/P, K-PC composites. The sample PCT-400-550 had the best photocatalytic activity, with the degradation rate of RhB, MO, and MB dye solutions reaching more than 99% within 30 min, with satisfactory cyclic stability. The outstanding photocatalytic activity can be credited to its unique morphology and the efficient collaboration between TiO2 and P, K-containing biochar.

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Section: Surface Elemental Analysis Of Prepared Samplesmentioning

confidence: 99%