Facile All-Optical Method for <em>In Situ</em> Detection of Low Amounts of Ammonia [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 668.4 Plastics
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: Article No. 101757 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 262583
• Chủ đề: 1. 09 biomass fuels; 2. 37 inorganic, organic, physical, and analytical chemistry; 3. 59 basic biological sciences; 4. Chemical engineering; 5. Chemistry

Tóm tắt

As a key precursor for nitrogenous compounds and fertilizer, ammonia affects our lives in numerous ways. Rapid and sensitive detection of ammonia is essential, both in environmental monitoring and in process control for industrial production. Here we report a novel and nonperturbative method that allows rapid detection of ammonia at low concentrations, based on the all-optical detection of surface-enhanced Raman signals. We show that this simple and affordable approach enables ammonia probing at selected regions of interest with high spatial resolution, making in situ and operando observations possible.