Facile topotactic conversion routes towards novel functional materials

该项目的目的是利用最近发展的一种新的合成方案，利用氧化物的拓扑定向转化为过渡金属硫族化合物（tmc）来制造二维（2D）材料。该技术的一个关键优势是它依赖于氧化薄膜的制造，这是一项成熟的技术，因此它们可以在任意选择的基材上常规地转化为tmc的大面积涂层。最终的目标是研究这种制备薄膜的几种潜在应用。首先，与Moran博士（工程学院）合作，目标是开发纳米和微尺度的二维和三维原子薄TMD薄膜，以证明：(a)介结构二维tmd可以使表面的光吸收实现改进的电催化和光催化活性；(b)测试预图纹材料的制造，以诱导钉钉效应，并防止在析氢条件下薄膜从衬底上脱落。在Moran博士的指导下，新的超导系统，具有改进的开/关比的场效应晶体管（fet）和光发射探测器将作为研究的第二股发展。

The aim of the project is to capitalise on the recent development of a novel synthesis protocol for the fabrication of two-dimensional (2D) materials using topotactic conversion of oxides to transition metal chalcogenides (TMCs). A key advantage of the technique is that it relies on the fabrication of oxide thin films, which is a mature technology, so they could be routinely converted to large-area coatings of the TMCs on an arbitrary substrate of choice. The ultimate goal is to investigate several potential applications for the fabricated films. Firstly, in collaboration with Dr. Moran (School of Engineering), the aim is to develop nano- and micro-scale 2D and 3D patterning of the atomically thin TMD films in order to demonstrate: (a) that mesostructured 2D TMDs can enable the light absorption on the surface to achieve improved electrocatalytic and photocatalytic activities and (b) to test fabrication of pre-patterned materials to induce pinning effect and prevent peeling of the film from a substrate under hydrogen evolution conditions. Under supervision Dr. Moran novel superconducting systems, field effect transistors (FETs) with improved on / off ratio and photoemission detectors will be developed as a second strand of the research.