SGER: Hydrogen Sensor with High Selectivity and Sensitivity at Room Temperature

摘要提案标题：SGER：室温下高选择性氢传感器提案号：CTS-0350572主要研究者：Sudipta Seal机构：佛罗里达中央大学本项目的目标是开发一种新型的薄膜无机膜，以提高室温氢传感器的选择性。 基于氧化锡的气体传感器已经以各种形式合成，但是它们在室温下的灵敏度一直很差。 在本计画中，我们将在氧化锡感测器上制作一奈米多孔质子传导陶瓷薄膜。 候选材料包括钡、铈和锶的氧化物。 该膜预期通过增加对氢的选择性来增加装置的灵敏度。 溶胶-凝胶和碳热合成技术将用于制造纳米晶，致密，多孔，掺杂的氧化锡薄膜和导线形式的传感器。 金和铂催化剂将通过溅射引入薄膜中。 纳米线将提供比颗粒更高的表面积。 原型传感器将暴露于紫外线辐射，以提高表面吸附的氧离子的量，并提高氢气在传感器表面上的催化分解。 就更广泛的影响而言，这项工作可能会产生一种更灵敏、更强大的传感器，用于检测氢气，目前氢气被认为是几种应用中的能源。 这种装置将用于检测氢气泄漏，避免潜在的火灾和爆炸。

AbstractProposal Title: SGER: Hydrogen Sensor with High Selectivity at Room TemperatureProposal Number: CTS-0350572Principal Investigator: Sudipta SealInstitution: University of Central FloridaThe objective of this project is to develop a novel thin-film inorganic membrane to enhance the selectivity of a room temperature hydrogen sensor. Tin oxide-based gas sensors have been synthesized in various forms but their sensitivity at room temperature has been poor. In this project a nanocrystalline porous thin film of proton-conducting ceramic membranes will be fabricated on the tin oxide sensor. Candidate materials include oxides of barium, cerium, and strontium. This membrane is expected to increase the sensitivity of the device by increasing the selectivity for hydrogen. Sol-gel and carbothermal synthesis techniques will be used for fabricating nanocrystalline, dense, porous, doped tin oxide sensors in thin film and wire form. Gold and platinum catalysts will be introduced in the thin film by sputtering. Nanowires will provide a higher surface area than particulates. A prototype sensor will be exposed to ultraviolet radiation to enhance the amount of surface adsorbed oxygen ions and to enhance the catalytic decomposition of the hydrogen gas over the sensor surface. In terms of the broader impacts, this work could lead to a more sensitive, robust sensor for the detection of hydrogen, which is currently being considered as a source of energy in several applications. Such a device would be used to detect hydrogen leaks and avoid potential fires and explosions.