《Table 1 Specific surface areas (SBET) , pore diameters (Dp) and pore volumes (Vp) of different N-Ti

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《无模板剂的溶胶-水热法合成具有可见光响应的氮掺杂混晶TiO_2(锐钛矿/金红石/板钛矿)纳米棒束（英文）》

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Data for the N-TiO2 nano-rod bundles prepared at different sol-hydrothermal time for the degradation of MO are shown in Fig.8b.It was found that the sol-hydrothermal time significantly affected the degradation rate of MO under visible light irradiation，and the highest MO degradation efficiency was achieved at the sol-hydrothermal time of 18 h.This can be explained by the increase in the surface area，as shown in Fig.9.The sample prepared at120°C for 18 h showed the highest specific surface area（SBET）amongst the various sol-hydrothermal times of 6，12，18 and 24 h.The specific surface areas，as calculated using Brunauer-Emmet-Teller equation，are listed in Table 1.These values are in good consistence with the photocatalytic performance.According to the literature，higher specific surface areas and larger pore volumes of photocata-lysts both contributed to an enhanced photocatalytic activity owing to the presence of a large amount of surface active sites，so it can absorb and transfer reactant molecules easily via the interconnected porous structure，and increase the photocatalytic performance[26，27].