In this contribution, comparison of TiO₂ nanowires (TiO₂ NWs) and TiO₂ nanoparticles (TiO₂ NPs) for photodegradation of resorcinol as endocrine model was extensively carried out. The results indicated that X-ray diffraction (XRD) patterns of the TiO₂ NWs exhibited brookite and anatase phases; whereas, the prepared TiO₂ NPs is pure anatase phase. TEM images of TiO₂ NWs exhibit clear nanowire structures with the 2 μm length and diameter of 50–100 nm, while the TiO₂ NPs particle sizes are 5–10 nm. The prepared TiO₂ NWs and TiO₂ NPs were compared with commercial photocatalyst TiO₂-P25 by the determination of their photocatalytic performances. The photocatalytic efficiencies of TiO₂ NWs, TiO₂ NPs, and TiO₂ P25 are amounted to be 98.7%, 98.4%, and 83% within 3-h illumination. However, the photodegradation rates TiO₂ NPs, TiO₂ NWs, and TiO₂-P25 are 12.24 × 10⁻⁷ mol L⁻¹ min⁻¹, 10.79 × 10⁻⁷ mol L⁻¹ min⁻1, and 5.77 × 10⁻⁷ mol L⁻¹ min⁻¹, i.e., the photodegradation rates TiO₂ NPs is slightly faster than TiO₂ NWs, and they are significantly greater 2 times than that of commercial photocatalysts TiO₂-P25. The apparent rate constant k (min⁻¹) value of TiO₂ NPs and TiO₂ NWs is higher than that of commercial TiO₂-P25 for 3.3 and 3.25 times, respectively. From the economic point of view, TiO₂ NPs calcined at 400 °C are chosen to be the optimum for saving energy in the preparation step without loss of photocatalytic efficiency.

Graphical abstract

在此贡献中，作为内分泌模型，广泛地比较了用于间苯二酚光降解的TiO ₂纳米线（TiO ₂ NWs）和TiO ₂纳米粒子（TiO ₂ NPs）。结果表明，TiO ₂ NW的X射线衍射图谱显示板钛矿和锐钛矿相。制备的TiO ₂ NPs为纯锐钛矿相。TiO ₂ NW的TEM图像显示出清晰的纳米线结构，其长度为2μm，直径为50–100 nm，而TiO ₂ NPs的粒径为5–10 nm。将制备的TiO ₂ NWs和TiO ₂ NPs与市售光催化剂TiO进行比较通过测定_2- P25的光催化性能。TiO ₂ NWs，TiO ₂ NPs和TiO ₂ P25的光催化效率在3小时的照射下分别为98.7％，98.4％和83％。然而，光降解速率的TiO _2个纳米粒子，二氧化钛₂纳米线，和TiO ₂ -P25是12.24×10 ^-7 摩尔大号^-1 分钟^-1，10.79×10 ^-7 摩尔大号^-1 分钟^- 1，和5.77×10 ^{- 7}  mol L ^-1  min ^-1，即光降解速率TiO ₂NPs比TiO ₂ NW稍快，并且比市售光催化剂TiO ₂ -P25大2倍。表观速率常数ķ（分钟^-1的TiO）值_2周的NP和TiO ₂纳米线比商业的TiO更高₂ -P25为3.3和3.25倍。从经济角度出发，选择在400°C下煅烧的TiO ₂ NPs是在制备步骤中节省能量而不损失光催化效率的最佳选择。

图形概要