Synthesis of rare earth doped TiO₂nanorods as photocatalysts for lignin degradation

Abstract

A two-step process is developed to synthesize rare earth doped titania nanorods (RE-TiO 2 NRs) as photocatalysts for efficient degradation of lignin under simulated sunlight irradiation. In this approach, protonated titanate nanotubes with layered structures were first prepared by a hydrothermal approach, and rare earth metal ions were subsequently bound to the negatively charged surface of the synthesized titanate via electrostatic incorporation. The as-synthesized RE-TiO 2 NRs after calcination generally showed much higher photocatalytic efficiencies than those of undoped TiO 2 NRs or the commercial P25

Facile synthesis of C, N-TiO2 nanorods via layered Ti 3 O 7 2 − -TMAH interlaminar bonding interaction and their enhanced catalytic performance

“…In the synthesis process, tetramethylammonium cations were attracted by layered H 2 Ti 3 O 7 nanotubes with a negative charge through electrostatic interaction. The interlayer spacing was 0.7-0.8 nm, which was in agreement with previous report [27]. The tube wall consisted of 3-5 layered structures.…”

“…The synthetic process of H 2 Ti 3 O 7 nanotubes (NTs) was given as follows [27]. 22 g of NaOH was dissolved into 55 ml of ultrapure water to obtain solution.…”

Catalytic Scissoring of Lignin into Aryl Monomers

“…The photo‐irradiation degradation of lignin has long been studied as part of the delignification process. Traditionally, the existing photo‐oxidation methods indiscriminately degraded valuable functional groups to generate a wide range of mixtures, and most of the carbon in lignin was eventually converted to CO 2 . A more rational way is to selectively depolymerize lignin into value‐added chemicals .…”

Structure-property relationships for Eu doped TiO2 thin films grown by a laser assisted technique from colloidal sols

“…Our aim was to obtain uniform and continuous Eu doped TiO 2 thin lms, suitable for a large variety of optical applications, as photocatalysis, dye-sensitized solar cells, color displays, optical sensors, or nanoscaled optoelectronic devices. [32][33][34] The aqueous Eu cations-adsorbed TiO 2 NPs sols were obtained by a colloidal sol-gel route. 35 The as-grown thin lms were submitted to post-deposition thermal treatments.…”