邱曉雨博士、唐亞文教授課題組在ELECTROCHIMICA ACTA發(fā)表研究論文
Construction of ultrasensitive ammonia sensor using ultrafine Ir decorated hollow graphene nanospheres
Zhang, HF (Zhang, Huaifang)[ 1,2 ] ; Wang, Y (Wang, Yao)[ 1,2 ] ; Zhang, BB (Zhang, Binbin)[ 1,2 ] ; Yan, YW (Yan, Yawei)[ 1,2 ] ; Xia, J (Xia, Jie)[ 1,2 ] ; Liu, XJ (Liu, Xuejiang)[ 1,2 ] ; Qiu, XY (Qiu, Xiaoyu)[ 1,2 ]*（邱曉雨）; Tang, YW (Tang, Yawen)[ 1,2 ]*（唐亞文）
[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China
[ 2 ] Nanjing KaiYan Chem Co Ltd, Nanjing 210023, Jiangsu, Peoples R China
ELECTROCHIMICA ACTA，201905,304,109-117
The study on electrochemical behavior of ammonia is a far-reaching topic, not only for its electro-oxidation elimination from effluent treatments, but also for detection of ammonia concentration by employing electrochemical sensors. Herein, we report a simple electro-chemical ammonia detector with high sensitivity/selectivity, superfast response, and long-time stability, using ultrafine Ir nanoparticles decorated 3D graphene hollow spheres. Morphological and structural analysis reveals that the inner ultrathin graphene shell effectively maximize the specific surface area and outer tiny Ir nanoparticles are optimal for offering active adsorption sites of NH3. Because of the well-defined morphology and 3D interconnected architecture, the rGO/Ir HSs modified glassy carbon electrode (GCE) exhibits superior activity for the electro-oxidation of NH3 performed in neutral medium, which is 4 times higher than that of commercial Ir/C catalyst. The amperometry technique is served to investigate the ammonia-detected performance of the rGO/Ir HSs-modified GCE, demonstrating high sensitivity and quick response from wide linear range of 0.015-75mM (R-2 = 0.998) with a detection limit of 6.5 mu M. This work offers a new type of graphene-based nanohybrids to enhance the electro-oxidation and gas sensing abilities toward ammonia, leading to the development of manufacturing high-performance electro-analytical sensors.
文章鏈接：
https://www.sciencedirect.com/science/article/pii/S0013468619303743?via%3Dihub
版權(quán)與免責聲明：本網(wǎng)頁的內(nèi)容由收集互聯(lián)網(wǎng)上公開發(fā)布的信息整理獲得。目的在于傳遞信息及分享，并不意味著贊同其觀點或證實其真實性，也不構(gòu)成其他建議。僅提供交流平臺，不為其版權(quán)負責。如涉及侵權(quán)，請聯(lián)系我們及時修改或刪除。郵箱：sales@allpeptide.com