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Express"],"published-print":{"date-parts":[[2024,4,22]]},"abstract":"<jats:p>The spectral emission of laser-induced plasma in water has a broadband continuum containing ultraviolet light, which can be used as a novel light source for the degradation of organic compounds. We studied the degradation process of the organic dye Rhodamine B (RhB) using plasma light source excited by the \u201cLaser\u2009+\u2009Fe\u201d mode. Spectral analysis and reaction kinetics modelling were used to study the degradation mechanism. The degradation process using this light source could be divided into two stages. The initial stage was mainly photocatalytic degradation, where ultraviolet light broke the chemical bond of RhB, and then RhB was degraded by the strong oxidising ability of \u00b7OH. As the iron and hydrogen ion concentrations increased, the synergistic effect of photocatalysis and the Fenton reaction further enhanced the degradation rate in the later stage. The plasma excited by the \u201cLaser\u2009+\u2009Fe\u201d mode achieved photodegradation by effectively enhancing the ultraviolet wavelength ratio of the emission spectrum and triggered the Fenton reaction to achieve rapid organic matter degradation. Our findings indicate that the participation of the Fenton reaction can increase the degradation rate by approximately 10 times. Besides, the impact of pH on degradation efficiency demonstrates that both acidic and alkaline environments have better degradation effects than neutral conditions; this is because acidic environments can enhance the Fenton reaction, while alkaline environments can provide more \u00b7OH.<\/jats:p>","DOI":"10.1364\/oe.520960","type":"journal-article","created":{"date-parts":[[2024,4,2]],"date-time":"2024-04-02T16:02:50Z","timestamp":1712073770000},"page":"15645","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Fenton reaction in the process of \u201cLaser\u2009+\u2009Fe\u201d mode excited plasma for Rhodamine B degradation"],"prefix":"10.1364","volume":"32","author":[{"given":"Jiao","family":"Zhu","sequence":"first","affiliation":[{"name":"Sichuan University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dan","family":"Yu","sequence":"additional","affiliation":[{"name":"Sichuan Province Environmental Protection Technology &Engineering Co.Ltd"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Na","family":"Xie","sequence":"additional","affiliation":[{"name":"Laser Fusion Research Center, China Academy of Engineering Physics"},{"name":"Science and Technology on Plasma Physics Laboratory"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0056-3992","authenticated-orcid":true,"given":"Jinghua","family":"Han","sequence":"additional","affiliation":[{"name":"Sichuan University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hang","family":"Wang","sequence":"additional","affiliation":[{"name":"Sichuan Province Environmental Protection Technology &Engineering Co.Ltd"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dan","family":"Xie","sequence":"additional","affiliation":[{"name":"Sichuan Province Environmental Protection Technology &Engineering Co.Ltd"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jie","family":"Jiang","sequence":"additional","affiliation":[{"name":"Sichuan University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4533-1423","authenticated-orcid":true,"given":"Guoying","family":"Feng","sequence":"additional","affiliation":[{"name":"Sichuan University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xing\u2019an","family":"Long","sequence":"additional","affiliation":[{"name":"Sichuan University"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"285","published-online":{"date-parts":[[2024,4,12]]},"reference":[{"key":"oe-32-9-15645-R1","doi-asserted-by":"publisher","first-page":"129195","DOI":"10.1016\/j.molstruc.2020.129195","volume":"1224","author":"Selvaraj","year":"2021","journal-title":"J. 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