Study on the Catalytic Mechanism of MAl2O4:Cr Catalysts (M = Mg, Co, Zn) under the Synergistic Effect of Ultrasound and Simulated Solar Irradiation on the Degradation of Oil and Gas Field Wastewater
{"title":"Study on the Catalytic Mechanism of MAl2O4:Cr Catalysts (M = Mg, Co, Zn) under the Synergistic Effect of Ultrasound and Simulated Solar Irradiation on the Degradation of Oil and Gas Field Wastewater","authors":"Hui Xu, Shipeng Wang, Rongrong Xie","doi":"10.1134/s0036024424700304","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A simple sol-gel method has been utilized to synthesize MAl<sub>2</sub>O<sub>4</sub>:Cr catalysts (M = Mg, Co, Zn). The spinel-type MAl<sub>1.9</sub>Cr<sub>0.1</sub>O<sub>4</sub> was formed after Cr ions were introduced into MAl<sub>2</sub>O<sub>4</sub>, as confirmed by various characterization methods. The particle size of MAl<sub>2</sub>O<sub>4</sub>:Cr catalyst increases with the increasing of the M ion radius, and CoAl<sub>2</sub>O<sub>4</sub>:Cr catalyst has the highest uniformity with an average particle size of 60 nm. The CoAl<sub>2</sub>O<sub>4</sub>:Cr catalyst is effective in degrading oil and gas field wastewater through the combination of ultrasonic and simulated solar irradiation and has a high visible light absorption coefficient. The CoAl<sub>2</sub>O<sub>4</sub>:Cr catalyst has high cyclic stability, and its optimal catalyst content is 0.5 g/L. Capture experiment and possible mechanism analysis confirm that the electrons, holes, hydroxyl radicals and superoxide radicals are the main active species in CoAl<sub>2</sub>O<sub>4</sub>:Cr catalyst for the degradation of oil and gas field wastewater.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s0036024424700304","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
A simple sol-gel method has been utilized to synthesize MAl2O4:Cr catalysts (M = Mg, Co, Zn). The spinel-type MAl1.9Cr0.1O4 was formed after Cr ions were introduced into MAl2O4, as confirmed by various characterization methods. The particle size of MAl2O4:Cr catalyst increases with the increasing of the M ion radius, and CoAl2O4:Cr catalyst has the highest uniformity with an average particle size of 60 nm. The CoAl2O4:Cr catalyst is effective in degrading oil and gas field wastewater through the combination of ultrasonic and simulated solar irradiation and has a high visible light absorption coefficient. The CoAl2O4:Cr catalyst has high cyclic stability, and its optimal catalyst content is 0.5 g/L. Capture experiment and possible mechanism analysis confirm that the electrons, holes, hydroxyl radicals and superoxide radicals are the main active species in CoAl2O4:Cr catalyst for the degradation of oil and gas field wastewater.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
