Electronic Resource
Efficacy of the Reactive Oxygen Species Generated by Immobilized TiO2 in the Photocatalytic Degradation of Diclofenac
| العنوان: | Efficacy of the Reactive Oxygen Species Generated by Immobilized TiO2 in the Photocatalytic Degradation of Diclofenac |
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| المؤلفون: | DI CREDICO, B, Bellobono, I, D'Arienzo, M, Fumagalli, D, Redaelli, M, Scotti, R, Morazzoni, F, DI CREDICO, BARBARA, D'ARIENZO, MASSIMILIANO, REDAELLI, MATTEO, SCOTTI, ROBERTO, MORAZZONI, FRANCA |
| بيانات النشر: | Hindawi Limited 2015 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | We report on the photodegradation of diclofenac (DCF) by hydrothermal anatase nanocrystals either free or immobilized in porous silica matrix (TS) in connection to the type and amount of reactive oxygen species (ROS), in order to have deeper insight into their role in the photocatalysis and to provide an effective tool to implement the DCF mineralization. TiO2 and TS exhibit a remarkable efficiency in the DCF abatement, supporting that the utilization of anatase nanoparticles with the highly reactive { 001 }, { 010 }, and { 101 } exposed surfaces can be an effective way for enhancing the photooxidation even of the persistent pollutants. Furthermore, the hydrothermal TiO2, when immobilized in silica matrix, preserves its functional properties, combining high photoactivity with an easy technical use and recovery of the catalyst. The catalysts performances have been related to the presence of OH•, 1O2, and O2- • species by electron paramagnetic resonance spin-trap technique. The results demonstrated that the ROS concentration increases with the increase of photoactivity and indicated a significant involvement of 1O2 in the DCF degradation. The efficacy of TiO2 when immobilized on a silica matrix was associated with the high ROS life time and with the presence of singlet oxygen, which contributes to the complete photomineralization of DCF. |
| مصطلحات الفهرس: | Renewable Energy, Sustainability and the Environment, Chemistry (all), Atomic and Molecular Physics, and Optic, Materials Science (all), info:eu-repo/semantics/article |
| URL: | info:eu-repo/semantics/altIdentifier/wos/WOS:000355806000001 volume:2015 firstpage:1 lastpage:13 numberofpages:13 journal:INTERNATIONAL JOURNAL OF PHOTOENERGY |
| الاتاحة: | Open access content. Open access content info:eu-repo/semantics/openAccess |
| ملاحظة: | English |
| Other Numbers: | ITBAO oai:boa.unimib.it:10281/92458 10.1155/2015/919217 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84935896213 1308915480 |
| المصدر المساهم: | BICOCCA OPEN ARCH From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1308915480 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |