Chang Shengding, Ji Muwei, Yan Changxu, Zhang Kai, Deng Qian, Xu Jian, Zhu Caizhen, Li Bo, Wang Jin
Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
Institute of Low-dimensional Materials Genome Initiative, College of chemistry and environmental engineering, Shenzhen University, Shenzhen 518060, China.
Materials (Basel). 2019 Jun 17;12(12):1950. doi: 10.3390/ma12121950.
KTaO/Au hetero-nanostructures were synthesized by in-situ reduction of HAuCl on the surface of hydrothermally-grown KTaO sub-micron cubes. The concentration of Au source was found to be a critical factor in controlling the hetero-nucleation of Au nanoparticles on the surface of KTaO sub-micron cubes. Loading of Au particles on KTaO nanocrystals enriched KTaO additional UV-vis absorption in the visible light region. Both KTaO and KTaO/Au nanocrystals were shown to be active in the photo-degradation of p-nitrophenol, while the loading of Au on KTaO clearly improved the photo-degradation efficiency of p-nitrophenol compared to that on bare KTaO nanocrystals, probably due to the improved light absorption and charge separation.
通过在水热生长的KTaO亚微米立方体表面原位还原HAuCl合成了KTaO/Au异质纳米结构。发现金源的浓度是控制金纳米颗粒在KTaO亚微米立方体表面异质成核的关键因素。在KTaO纳米晶体上负载金颗粒增加了KTaO在可见光区域的额外紫外-可见吸收。KTaO和KTaO/Au纳米晶体在对硝基苯酚的光降解中均表现出活性，而与裸KTaO纳米晶体相比，在KTaO上负载金明显提高了对硝基苯酚的光降解效率，这可能是由于光吸收和电荷分离得到了改善。
