o-Nitrobenzaldehyde actinometry in the presence of suspended TiO₂ for photocatalytic reactors

详细信息    查看全文

• 作者：Natalia De la Cruz ; Violette Romero ; Renato F. Dantas ; Pilar Marco ; Bernardí ; Bayarri ; Jaime Gimé ; nez ; ^{j.gimenez.fa@ub.edu} ; Santiago Esplugas
• 关键词：o-Nitrobenzaldehyde actinometry ; TiO2 ; Photocatalytic reactor ; Photocatalysis
• 刊名：Catalysis Today
• 出版年：2013
• 出版时间：15 June, 2013
• 年：2013
• 卷：209
• 期：Complete
• 页码：209-214
• 全文大小：955 K

文摘

In this study the o-nitrobenzaldehyde (o-NB) actinometry is used to measure the photon flow entering a photocatalytic reactor. Two different proposed methods in bibliography are adapted and compared: by following pH or o-NB concentration. In addition, it was studied the influence of suspended TiO₂ particles, inside the photoreactor, on the o-NB actinometry. Particularly, the appearance of photocatalytic products was followed during actinometries with suspended TiO₂. It seems that these photocatalytic products do not come from the o-NB photocatalysis, but from the photocatalytic reaction of its photo-product (o-nitrosobenzoic acid), catalyzed by TiO₂. Therefore, this actinometry, following the o-NB concentration, can be used in the presence of suspended TiO₂ to determine the apparent photon flow entering a photoreactor or apply it to suitable models.