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Guangliang CHEN (陈光良), Wei HU (胡巍), Jinsong YU (於劲松), Wenxia CHEN (陈稳霞), Jun HUANG (黄俊). Exploring the cooperation effect of DBD byproducts and Ag/TiO2 catalyst for water treatment in an APPJ system[J]. Plasma Science and Technology, 2017, 19(1): 15503-015503. DOI: 10.1088/1009-0630/19/1/015503
Citation: Guangliang CHEN (陈光良), Wei HU (胡巍), Jinsong YU (於劲松), Wenxia CHEN (陈稳霞), Jun HUANG (黄俊). Exploring the cooperation effect of DBD byproducts and Ag/TiO2 catalyst for water treatment in an APPJ system[J]. Plasma Science and Technology, 2017, 19(1): 15503-015503. DOI: 10.1088/1009-0630/19/1/015503

Exploring the cooperation effect of DBD byproducts and Ag/TiO2 catalyst for water treatment in an APPJ system

Funds: support from National Natural Science Foundation of China under Grant No.11175157, the Zhejiang Natural Science Foundations of China under No.LY16A050002, 521 Talent Project of Zhejiang Sci-Tech University, and the Young Researchers Foundations of Zhejiang Provincial Top Key Academic Discipline of Chemical Engineering and Technology.
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  • Received Date: April 19, 2016
  • In this paper, the collective effects of combining heterogeneous Ag/TiO2 nanocomposite catalyst with the byproducts (primarily the irradiation and the O3 species) of an atmospheric pressure plasma jet (APPJ) system on the degradation of methyl orange (MO) were explored. The heterostructured Ag/TiO2 nanocomposite was achieved via decorating the Ag quantum dots (QDs) on the commercially available TiO2 catalyst (P25) through a hydrothermal method. The x-ray diffraction analysis of the nanocomposite catalyst showed the diffraction peaks at 44.3°, 64.4°, and 77.5°, corresponding to the Ag planes of (200), (220) and (311), respectively. The high resolution transmission electron microscope characterization of the nanocomposite catalyst indicated that the Ag QDs with an average diameter of 5 nm were homogeneously distributed on the P25 surface. The experimental results on the MO photodegradation showed that the APPJ irradiation had a marginal effect on the cleavage of the MO molecules. When the Ag/TiO2 nanocomposite catalyst was used, the photodegradation rate of MO increased about 5 times. When both the APPJ byproducts and the Ag/TiO2 nanocomposite catalyst were used, however, over 90% of the MO in the tested solution was cleaved within 15 min, and the energy ef?ciency was about 0.6 g/kW h. Moreover, an optimal Ag dosage value was determined (6 wt%). The catalytic results indicated that combining the DBD plasma byproducts with heterogeneous nanocomposite catalysts may be an effect protocol for decreasing the application cost of the DBD system and mitigating the environment pollution by organic dyes in the textile industry.
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