title: A novel dielectric barrier discharge reactor with photocatalytic electrode based on sintered metal fibers for abatement of xylene.
abstract: A novel dielectric barrier discharge (DBD) reactor was made for the abatement of xylene. This reactor has a photocatalytic electrode prepared by a modified anodic oxidation method which was proposed in this work. The photocatalytic electrode has nano-TiO(2) deposited on sintered metal fiber (SMF). The reactor using the nano-TiO(2)/SMF electrode shows much better performance in abating xylene compared with reactors using other electrodes such as resistance wire or SMF. The conversion ratio of xylene reaches 92.7% in the novel reactor at a relatively voltage (23.6 kV). This ratio is much higher than the conversion ratios of xylene in the traditional reactors with resistance wire or SMF electrodes, which are ~64.7%. The selectivity of CO(2) of the reactor using the nano-TiO(2)/SMF electrode (300 pps, 23.6 kV) was observed to be 86.6%, which is about twice as large as that of a traditional reactor using a resistance wire electrode. If a traditional DBD reactor is replaced by the novel reactor, at the same specific input energy, the energy yield can increase from 0.391 to 0.556 mg/kJ. Finally, the xylene decomposition mechanism with the nano-TiO(2)/SMF electrode was also briefly discussed.
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, Department of Chemical and Biological Engineering, Zhejiang University (XiXi Campus), Hangzhou 310028, PR China.
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Ye
authors.forename: Chunxia
authors.initials: C
authors.lastname: Wang
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Shao
authors.forename: Qing
authors.initials: Q
authors.lastname: Ye
authors.forename: Yi
authors.initials: Y
authors.lastname: He
authors.forename: Yao
authors.initials: Y
authors.lastname: Shi
mesh_terms: D000393:Air Pollutants / Q000302:isolation & purification*; D002384:Catalysis; D017097:Electric Impedance; D004566:Electrodes; D004867:Equipment Design; D008670:Metals / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D056951:Photoelectron Spectroscopy; D014025:Titanium / Q000737:chemistry*; D014992:Xylenes / Q000302:isolation & purification*
chemical_list: D000393:Air Pollutants; D008670:Metals; D014992:Xylenes; C009495:titanium dioxide; D014025:Titanium