Facile Fabrication of Ce/V‐Modified Multi‐Channel TiO₂ Nanotubes and Their Enhanced Selective Catalytic Reduction Performance

Abstract

To optimize one-dimensional (1D) TiO 2 nanofibers, tailor-madem ulti-channel TiO 2 nanotubes have been successfully fabricated by electrospinning technology.A fter loading with Ce and V, the CeVTi-tube catalyste xhibited a broad workingt emperature window anda cceptable resistance to H 2 Oa nd SO 2 for elimination of NO x .The corresponding analysisr evealed that the multi-channel structure provided more surfacea dsorbed oxygen species and that the wall of nanotubes anchored activec omponents efficiently, which was beneficial to improve the stability as wella sd ispersion of the active components. Besides, as ynergistice ffect between Ce and Ve asily occurred at the CeVTi-tube catalyst, and its reducibility was significantly improved since the electron transformation between Ce andVwas dramatically enhanced. Consequently,t he tailor-made multi-channel CeVTitube catalyst exhibited satisfied de-NO x efficiencya tt he temperature range of 220-460 8C. It seemed that the multichannel TiO 2 nanotubes hold great potential as an excellent carrierf or SCR catalysts. Figure 1. Schematic of preparation process.[a] Dr.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

A Green CeO2−WO3/TiO2 Medium‐Low Temperature de‐NOx Catalyst for Selective Catalytic Reduction of NOx with NH3

“…[57,58] In addition, the strong absorption peak at 1600 cm À 1 and 3400 cm À 1 could be attributed to the stretching vibration of the surface OÀ H or NÀ H which caused by water or Lewis-bound NH 3 . [59,60] This may be caused by H 2 O and nitrates adsorbed on the surface of the catalyst.…”