Cheng Wang, Fuling Du, Lipeng Wang, Qianru Yu, Xinchao Liang, Siqi Liu, Zhe Lei
{"title":"调节合成 pH 值和 ZSM-5 后处理以改善 TiO2/ZSM-5 复合物的吸附和光催化性能","authors":"Cheng Wang, Fuling Du, Lipeng Wang, Qianru Yu, Xinchao Liang, Siqi Liu, Zhe Lei","doi":"10.1016/j.apt.2024.104730","DOIUrl":null,"url":null,"abstract":"<div><div>TiO<sub>2</sub>/ZSM-5 composites with enhanced adsorption and photocatalytic properties were synthesized via regulation of synthesis pH value and post (acid/alkali) treatment of ZSM-5. The influences of synthesis pH values and post-treatment of ZSM-5 on microstructure, adsorption and photocatalytic properties of the composites were investigated. The methyl orange was used to assess the adsorption and photocatalytic properties of the samples. The results showed that the synthesis pH values and acid/alkali treatment had significant influences on the microstructure, adsorption and photocatalytic properties of TiO<sub>2</sub>/ZSM-5 composites. The composites synthesized at pH 7 had a relatively higher TiO<sub>2</sub> content, smaller anatase crystallite size, greater specific surface area, the most effective separation of photogenerated electron-hole pairs, the fastest interfacial charge transfer, and therefore exhibited excellent adsorption and photocatalytic properties. Acid treatment could significantly increase the specific surface area, Si/Al ratio of ZSM-5, the separation efficiency of photogenerated electron-hole pairs, and amount of produced active free radicals •O<sub>2</sub><sup>–</sup> and •OH. The TiO<sub>2</sub>/acid-treated ZSM-5 exhibited excellent photodegradation with 99.3 % methyl orange in 150 min, which is higher than that of the TiO<sub>2</sub>/ZSM-5 and TiO<sub>2</sub>/alkali-treated ZSM-5.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 1","pages":"Article 104730"},"PeriodicalIF":4.2000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Regulation of synthesis pH value and post-treatment of ZSM-5 for improving adsorption and photocatalytic properties of TiO2/ZSM-5 composites\",\"authors\":\"Cheng Wang, Fuling Du, Lipeng Wang, Qianru Yu, Xinchao Liang, Siqi Liu, Zhe Lei\",\"doi\":\"10.1016/j.apt.2024.104730\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>TiO<sub>2</sub>/ZSM-5 composites with enhanced adsorption and photocatalytic properties were synthesized via regulation of synthesis pH value and post (acid/alkali) treatment of ZSM-5. The influences of synthesis pH values and post-treatment of ZSM-5 on microstructure, adsorption and photocatalytic properties of the composites were investigated. The methyl orange was used to assess the adsorption and photocatalytic properties of the samples. The results showed that the synthesis pH values and acid/alkali treatment had significant influences on the microstructure, adsorption and photocatalytic properties of TiO<sub>2</sub>/ZSM-5 composites. The composites synthesized at pH 7 had a relatively higher TiO<sub>2</sub> content, smaller anatase crystallite size, greater specific surface area, the most effective separation of photogenerated electron-hole pairs, the fastest interfacial charge transfer, and therefore exhibited excellent adsorption and photocatalytic properties. Acid treatment could significantly increase the specific surface area, Si/Al ratio of ZSM-5, the separation efficiency of photogenerated electron-hole pairs, and amount of produced active free radicals •O<sub>2</sub><sup>–</sup> and •OH. The TiO<sub>2</sub>/acid-treated ZSM-5 exhibited excellent photodegradation with 99.3 % methyl orange in 150 min, which is higher than that of the TiO<sub>2</sub>/ZSM-5 and TiO<sub>2</sub>/alkali-treated ZSM-5.</div></div>\",\"PeriodicalId\":7232,\"journal\":{\"name\":\"Advanced Powder Technology\",\"volume\":\"36 1\",\"pages\":\"Article 104730\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-11-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Powder Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921883124004072\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921883124004072","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Regulation of synthesis pH value and post-treatment of ZSM-5 for improving adsorption and photocatalytic properties of TiO2/ZSM-5 composites
TiO2/ZSM-5 composites with enhanced adsorption and photocatalytic properties were synthesized via regulation of synthesis pH value and post (acid/alkali) treatment of ZSM-5. The influences of synthesis pH values and post-treatment of ZSM-5 on microstructure, adsorption and photocatalytic properties of the composites were investigated. The methyl orange was used to assess the adsorption and photocatalytic properties of the samples. The results showed that the synthesis pH values and acid/alkali treatment had significant influences on the microstructure, adsorption and photocatalytic properties of TiO2/ZSM-5 composites. The composites synthesized at pH 7 had a relatively higher TiO2 content, smaller anatase crystallite size, greater specific surface area, the most effective separation of photogenerated electron-hole pairs, the fastest interfacial charge transfer, and therefore exhibited excellent adsorption and photocatalytic properties. Acid treatment could significantly increase the specific surface area, Si/Al ratio of ZSM-5, the separation efficiency of photogenerated electron-hole pairs, and amount of produced active free radicals •O2– and •OH. The TiO2/acid-treated ZSM-5 exhibited excellent photodegradation with 99.3 % methyl orange in 150 min, which is higher than that of the TiO2/ZSM-5 and TiO2/alkali-treated ZSM-5.
期刊介绍：
The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide.
The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them.
Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)
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