Development of Boron Doped Diamond Sensors for Water Quality Monitoring

2018-19年：MSC钻石科学与技术包括下列模块：CH976新颖而高效的材料合成方法PX904材料的性能和表征PX905缺陷和掺杂CH977材料的理论和模型PX906制造的未来：工业钻石CH978表面、界面和涂层CH979器件和制造PX907钻石光子学和量子器件CH980高性能材料的应用CH981迷你研究项目1和2以及CH914或PX908：CH914电化学和传感器PX908生物医学光学及应用项目：评估水质对于涵盖工业用途、废水、健康和安全、食品加工、环境农业等许多不同应用领域是必不可少的。通常用于进行这些测量的技术存在各种问题，如稳定性、添加试剂的需要、小型化问题、响应时间等。电化学是一种传感溶液物种的方法，但典型的电化学传感器是基于膜电极的，存在响应时间慢、膜堵塞频繁的问题。因此，本项目旨在探索无膜、无试剂、快速响应、直接接触式金刚石基电化学传感器在水质传感中的发展和应用。项目目标：1。了解本征电极材料的性质如何影响掺硼金刚石电极的电化学性能2。现场pH控制的应用3.建立有限元模型来补充实验数据，从而帮助选择电极设计和操作参数。研制了一种用于低浓度氯气传感的钻石基氯气传感器，以及相应的FEM5。实施pH控制在4中可能很重要。为了量化设备的响应，将对此进行调查和建模，内部pH传感器的集成也可能有用6。研究如何克服参比电极的不稳定性7。溶液流动对装置性能影响的研究

2018-19: MSc Diamond Science & Technology includes the following modules:CH976 Novel and Efficient Methods of Material SynthesisPX904 Properties and Characterization of MaterialsPX905 Defects and DopantsCH977 Theory and Modelling of MaterialsPX906 Manufacturing the Future: Industrial DiamondCH978 Surfaces, Interfaces and CoatingsCH979 Devices and FabricationPX907 Diamond Photonics and Quantum DevicesCH980 Applications of High Performance MaterialsCH981 Mini Research Project 1 and 2And either CH914 or PX908:CH914 Electrochemistry and SensorsPX908 Biomedical Optics and ApplicationsProject:Assessing the quality of water is essential for so many different application areas covering industrial use, waste water, health and safety, food processing, environmental, agriculture etc. Solution species such as pH and chlorine and related measurements provide vital information on the health of the water. Techniques commonly employed to make these measurements suffer from a variety of problems, such as stability, the need for added reagents, issues with miniaturisation, response time. Electrochemistry is one method of sensing solution species but typical electrochemical sensors are based on membrane electrodes which can suffer from a sluggish time response and frequent clogging of the membrane. Therefore this project aims to explore the development and application of membrane-free, reagent-less, fast responding, direct contact diamond based electrochemical sensors for water quality sensing. Project aims:1. Develop an understanding of how the intrinsic electrode material properties impact on the electrochemical performance of the boron doped diamond electrode2. Application of in-situ pH control3. Development of finite element models (FEM) to complement the experimental data and so aid in choice of electrode design and operating parameters4. Development of a chlorine sensor based on diamond for chlorine sensing at low concentrations, and corresponding FEM5. Implementation of pH control may be important in 4. to quantify the response of the device, this will be investigated and modelled, integration of an internal pH sensor may also be useful6. Investigating how to overcome reference electrode instability7. Investigation of the effect of solution flow on the performance of the device