Thiehmed Zeineb A, Altahtamouni Talal M
Materials Science & Technology Program, College of Arts & Sciences, Qatar University, Doha P.O. Box 2713, Qatar.
Nanomaterials (Basel). 2022 Aug 24;12(17):2904. doi: 10.3390/nano12172904.
In this study, the effect of KBr salt on the growth of TiO nanorods (NRs) was systematically studied. The addition of KBr with different concentrations provides a controllable growth of TiO NRs using hydrothermal method. The results revealed that the presence of KBr molecules affects the growth rate by suppressing the growth in the lateral direction and allowing for axial growth. This results in affecting the morphology by decreasing the diameter of the nanorods, and increasing the free space between them. Enhancing the free spaces between the adjacent nanorods gives rise to remarkable increase in the internal surface area, with more exposure side surface. To obtain benefit from the enlargement in the inner surface area, TiO NRs were used for the preparation of MoS/TiO heterostructures. To study the influence of the morphology on their activity, TiO NRs samples with different KBr concentrations as well as the MoS/TiO heterostructures were evaluated towards the photocatalytic degradation of Rhodamine B dyes.
在本研究中，系统地研究了溴化钾（KBr）盐对TiO纳米棒（NRs）生长的影响。添加不同浓度的KBr可通过水热法实现对TiO NRs生长的可控调节。结果表明，KBr分子的存在通过抑制横向生长并促进轴向生长来影响生长速率。这导致纳米棒直径减小，它们之间的自由空间增加，从而影响了形态。相邻纳米棒之间自由空间的增加使内表面积显著增大，更多的侧面得以暴露。为了利用内表面积的增大，TiO NRs被用于制备MoS/TiO异质结构。为了研究形态对其活性的影响，对不同KBr浓度的TiO NRs样品以及MoS/TiO异质结构进行了罗丹明B染料光催化降解的评估。
