Enhancement of the photocatalytic activity of a TiO₂/carbon aerogel based on a hydrophilic secondary pore structure

Abstract

The surface/interface synergy effect plays a positive role on the spatial separation and utilization of electrons and holes in photocatalytic process, which suggests a potential strategy for designing high efficiency photocatalysts.

Effect of WO3 on the Morphology and the Photodegradation of Dimethyl Phthalate of TiO2 Nanotube Array Photoelectrode

“…2e). A thick sediment covered the surface of nanotube array when the concentration of Na 2 WO 4 increased to 0.05 mol/dm 3 (Fig. 2f).…”

“…DMP is a ubiquitous environmental pollutant and is listed as one of the priority pollutants by American EPA as well as by _________________________ 1 The Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266003, China, corresponding author Y. Xin, e-mail address: xintom2000@126.com 2 Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultura1 University, Qingdao 266109, China. 3 College of Science and Information, Qingdao Agricultura1 University, Qingdao 266109, China.…”

“…Therefore, investigating methods for DMP degradation is critically important. Several such methods including photocatalytic oxidation [1][2][3], electrochemical degradation [4,5], adsorption [6,7] and sonoelectrolysis [8,9] have been investigated.…”

Carbon Gels-Modified TiO2: Promising Materials for Photocatalysis Applications

“…They discovered the new important intermediates 1,2,4-trihydroxybenzene during the decomposition processes of p-nitroaniline and reasonably explained its mineralization mechanism. Shi and co-workers discovered that TiO2 photocatalytic activity of DMP (dimethyl phthalate) degradation could be enhanced by hybridizing a CA material and constructing secondary hydrophilic pores [89]. They synthesized TiO2/CA composite photocatalysts with different CA pore diameters.…”

“…The processes include the following: (I) on the external surface, OH• formation with H2O reduction and oxidation; (II) the photoelectrons generated on the external surface migrate to the internal surface through the carbon layer; (III) on the internal surface, the photoelectrons are trapped by O2 to produce O2 •− ; (IV) HOc are generated with the participation of H2O and O2 •− and (V) DMP is oxidized by active HO• on both the external and internal surface. Copied with the permission from[89], Copyrights 2016 RSC[89].…”