Visible light-induced photocatalytic degradation of gas-phase acetaldehyde with platinum/reduced titanium oxide-loaded carbon paper

Abstract

Visible light-induced degradation of gas-phase acetaldehyde (CH 3 CHO) is investigated using O-deficient reduced TiO 2Àx -loaded carbon paper. The carbon paper is synthesized by the pyrolysis of a filter paper, and the reduced TiO 2Àx is prepared by the magnesiothermic reduction of commercial anatase TiO 2 . The surface areas of the non-carbonized filter paper and carbon papers obtained by carbonization at 400, 600, 800, and 1000 C are 4. (l > 420 nm), attributed to the efficient adsorption of gas-phase CH 3 CHO by the carbon paper and the rapid and complete degradation of CH 3 CHO to CO 2 by the active reduced TiO 2Àx . This strongly suggests that the reduced TiO 2Àx -loaded carbon paper is an efficient composite photocatalyst for the visible light-induced photocatalytic degradation of gas-phase CH 3 CHO.

Titanium Monoxide with in Situ Grown Rutile TiO2 Nanothorns as a Heterostructured Job-Sharing Anode Material for Lithium-Ion Storage

“…A uniform mixture of a-TiO 2 powder (Sigma-Aldrich, d < 25 nm, 4 g) and Mg powder (Samchun, 1.21 g) (molar ratio of 1:1) was placed in a quartz tube furnace and then heated at 650 °C for 8 h under the flow of H 2 /Ar (5 vol % H 2 ). After the reductive heating with Mg metal, the heated sample was stirred with 2.0 M HCl solution for 4 h to selectively etch out the MgO phase in order to obtain MgO-free reduced TiO (named T1) with high porosity. − …”

Magnesium: properties and rich chemistry for new material synthesis and energy applications

“…Kim et al reported a Pt/reduced TiO 2− x -loaded filter paper carbon (FPC) to degrade gas-phase acetaldehyde (CH 3 CHO). 189 First, FPC was prepared by the carbonization of a filter paper at 400–1000 °C under Ar gas flow (FPC- y , where y is the carbonization temperature). Next, reduced TiO 2− x (rT- z , where z is the molar amount of Mg) was synthesized through a magnesiothermic reduction of commercial anatase TiO 2 (CT) at 500 °C for 8 h under 5% H 2 /Ar gas flow.…”

A review on TiO2−x-based materials for photocatalytic CO2 reduction

“…49 Compared to TiO 2 nanoparticles calcined at high temperature, the yellow TiO 2 had abundant oxygen vacancies and Ti 3+ , which led to better electron transfer conductivity, increased visible light absorption and higher conduction band potential. 50 Xi et al 51 synthesized defective TiO 2 nanocrystals via a simple, mild and green sol–gel hydrothermal method. The prepared samples had a high specific surface area of 173.6 m 2 g −1 and perfect crystallinity of anatase phase without any calcination treatment.…”