Interfacial charge-transfer process across ZrO₂-TiO₂ heterojunction and its impact on photocatalytic activity

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• 作者：Diana Guerrero-Araque^a ; ^{dianacga@msn.com} ; David Ramí ; rez-Ortega^a ; Pr&oacute ; spero Acevedo-Peñ ; a^b ; Francisco Tzompantzi^a ; Hé ; ctor A. Calder&oacute ; n^c ; Ricardo G&oacute ; mez^a
• 关键词：Heterojunction ; Energy states ; Charge transfer process ; Photocatalytic activity ; Electrochemical characterization
• 刊名：Journal of Photochemistry and Photobiology A: Chemistry
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：335
• 期：Complete
• 页码：276-286
• 全文大小：3092 K
• 卷排序：335

文摘

ZrO2-TiO2 heterojunction with high photocatalytic activity were obtained by sol-gel. Energy states at heterojunction interface altered the semiconducting properties. 5 mol% ZrO2 in ZrO2-TiO2 heterojunction propitiated a better electron-hole separation. Photocatalytic activity is improved by favoring the charge transfer process. Direct and indirect charge transfer process involved in phototocatalytic process.