Ecofriendly liquid phase oxidation with hydrogen peroxide of 2,6-dimethylphenol to 2,6-dimethyl-1,4-benzoquinone catalyzed by TiO2–CeO2 mixed xerogels

Preparation of titania nanotubes doped with cerium and their photocatalytic activity for glyphosate

“…3 shows the FT-IR spectra of TiO 2 hydrothermally treated and then calcined at 400 • C and 0.15% Ce-TiO 2 nanotubes calcined at different temperatures and it can be seen that the FT-IR spectra of these different catalysts are similar. The broad band in the range of 800-400 cm −1 is assigned to the mixed contributions from the stretching modes of Ti-O, Ce-O and Ti-O-Ce [19,28], and this band shifts to high wavenumber with increasing calcination temperature probably due to the formation of Ti-O-Ce bonds. Two very weak bands at 2927 and 2853 cm −1 are ascribed to the contamination with the pump oil [29], and the band between 1350 and 1400 cm −1 might be attributed to the NO 3 − groups from the incomplete decomposition of Ce-precursor [20].…”

“…due to their f electron and multi-electron configuration. Many studies have shown that Ce doping enhanced the photocatalytic activity of TiO 2 [19,20], so we tried to improve the photocatalytic activity of TiO 2 nanotubes by doping cerium. For the reasons given above, TiO 2 nanotubes were first fabricated through hydrothermal treatment method, and then a series of Ce-TiO 2 nanotubes were prepared by impregnation method.…”

The Characterization and Structure-Dependent Catalysis of Ceria with Well-Defined Facets

“…It has a cubic fluorite crystal structure, and Ce is the most abundant of the lanthanide elements. The combination and interplay of these characteristics make cerium oxide an ideal catalyst or support material for many reactions, including oxidation of CO [9][10][11], organics [12][13][14][15], and ammonia [16], reduction and hydrogenation of CO 2 [17,18], NO [19,20], nitriles [21], and organics [22][23][24][25][26], steam reforming of ethanol [27,28], dehydration reactions [29,30], ketonization [31][32][33][34], and coupling reactions [35][36][37][38]. It exhibits both acid and base sites on its surface in close proximity, allowing it to promote a diverse array of reactions [6][7][8].…”

Photocatalytic Detoxification of NBB Dye Over Cerium Loaded Ag–ZnO Photocatalyst Under UV-A Light Irradiation

“…And also because of their 4f electron and multi-electron pattern, the features of polymorphism and good thermal stability were observed on rare earth oxides. Ce doping improved the photocatalytic activity of TiO 2 [25,26] [26][27][28][29][30]. The Ce-Ag-ZnO photocatalyst was subjected to photocatalytic activity using naphthol blue black dye under UV-A light irradiation and an outstanding photocatalytic activity was seen in the Ce co-doped Ag-ZnO photocatalyst substrates.…”