Chandra Soumen, Majee Karunamay, Mahto Triveni Kumar, Padhi Sumanta Kumar, Sahu Sumanta Kumar
Department of Applied Chemistry, Indian Insitute of Technology (ISM), Dhanbad 826004, Jharkhand, India.
J Nanosci Nanotechnol. 2018 Feb 1;18(2):1057-1065. doi: 10.1166/jnn.2018.14203.
Anatase hierarchical TiO2 microsphere/carbon dots composite (HTM/CDs) was fabricated by a facile method for active visible light photocatalysis. The phase, morphology, microstructure and optical properties were investigated by X-ray diffraction, scanning electronmicroscopy, transmission electron microscopy and UV-VIS diffuse reflectance spectroscopy respectively. Under visible light illumination, the fabricated HTM/CDs composite was exhibited an enhanced photo catalytic activity compared to that of pure hierarchical TiO2 microspheres (HTM). Such an enhancement in photocatalytic activity can be attributed to an increase in the absorption of visible light. The photocatalytic activity was investigated by the degradation of a model dyemalachite green (MG) and oxygen production through water splitting.We believe that this type of hybrid material could be used as a highly active and stable visible light photocatalyst to remove pollutants as well as energy production with high performance.
通过一种简便的方法制备了锐钛矿型分级TiO₂微球/碳点复合材料（HTM/CDs）用于活性可见光光催化。分别采用X射线衍射、扫描电子显微镜、透射电子显微镜和紫外-可见漫反射光谱对其相、形貌、微观结构和光学性质进行了研究。在可见光照射下，制备的HTM/CDs复合材料与纯分级TiO₂微球（HTM）相比表现出增强的光催化活性。这种光催化活性的增强可归因于可见光吸收的增加。通过降解模型染料孔雀石绿（MG）和光解水制氧研究了光催化活性。我们认为这种类型的杂化材料可作为一种高活性和稳定的可见光光催化剂，用于去除污染物以及高效产氢。
