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Exploring the cooperation effect of DBD byproducts and Ag/TiO_2 catalyst for water treatment in an APPJ system

plasma Science and Technology 2017年第1期19卷 64-71页

作者： Guangliang CHEN Wei HU Jinsong YU Wenxia CHEN Jun HUANG Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing ＆ Finishing of Textiles Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 People＇ s Republic of China Department of Chemistry and Chemical Engineering University of New Haven 300 Boston Post Road West Haven CT 06516 USA

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 *** heterostructured Ag/TiO2 nanocomposite was achieved via decorating the Ag quantum dots（QDs） on the commercially available TiO_2catalyst（P25） through a hydrothermal *** 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）,*** 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 *** experimental results on the MO photodegradation showed that the APPJ irradiation had a marginal effect on the cleavage of the MO *** the Ag/TiO2 nanocomposite catalyst was used,the photodegradation rate of MO increased about 5 *** 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 efficiency was about 0.6 g/k W ***,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.

关键词： APPJ plasma byproduct heterostructured catalyst organic wastewater treatment

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