文献类型：期刊文献

英文题名：Enhancing Amperometric Ozone Gas Sensing with Room-Temperature Ionic Liquids and Platinum-Based Electrodes

作者：Zhang, Huihui[1,2];Yang, Hsiang-Wei[3];Liu, Chen-Wei[4];Han, Cheng[1,2];Wang, Kuan-Wen[3];Dai, Sheng[1,2]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan, Taiwan;[4]Ind Technol Res Inst, Green Energy & Environm Res Labs, Hsinchu 310, Taiwan

年份：2024

卷号：17

期号：1

起止页码：1627

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001379964900001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22376062), the Science and Technology Commission of Shanghai Municipality (22ZR1415700), the Shanghai Rising-Star Program (20QA1402400), the Fundamental Research Funds for the Central Universities, and the National Council of Science and Technology, Taiwan (NSTC 113-2221-E-008-034 and 113-2218-E-008-015). Additional support was provided by the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center at East China University of Science and Technology.

语种：英文

外文关键词：ozone detection; room-temperature ionic liquids; amperometric sensor; sensitivity; PtAuAg nanorods

摘要：Ozone (O3) poses serious health risks, prompting numerous countries to implement regulations that establish exposure limits and emission controls, for example, the air quality index (AQI) for O3 ranging from 50 to 150 parts per billion (ppb), with natural levels at around 30 ppb. Electrochemical sensors are favored for detecting pollutant gases due to their high sensitivity, low cost, portability, energy efficiency, and capability for selective detection. In this study, we developed an O3 sensor employing carbon-supported Pt-based binary and ternary nanorods (NRs) combined with room-temperature ionic liquids (RTILs) as electrolytes, aiming at highly sensitive and selective detection of O3 at ppb levels. Initial screening of the O3 sensing performance across different electrolytes identified H2SO4 and [C4mpyrr][NTf2] (BMP) as the most sensitive options. BMP outperformed H2SO4 in terms of linearity, selectivity, reproducibility, and response/recovery times, despite a relatively lower sensitivity. Electrochemical testing of Pt, PtAu, PtAg, and PtAuAg NR electrodes in BMP revealed that the addition of Au enhanced the linear response, while Ag improved sensitivity. Consequently, the ternary PtAuAg NR electrode exhibited the highest sensitivity (10.5 nA/ppm (parts per million)) and a broad detection range, fulfilling the AQI requirements for O3. The current response from the PtAuAg NR electrode closely aligned with results from an ultraviolet (UV) photometric analyzer, confirming its accuracy. Notably, this electrode contains only 20 wt % noble metals, which reduces the overall cost to just 11% of that of a traditional pure Au electrode.